Magic-Mirror/gecko-dev
1
0
Fork 0
mirror of https://github.com/mozilla/gecko-dev.git synced 2024-11-08 20:47:44 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity
fb6cdf1fd2
gecko-dev/layout/base/nsCSSFrameConstructor.cpp
rods%netscape.com 270b0ca8dd Removed a lot of unneeded for for creating viewes for GfxList (experiment and ifdef'ed out) 
Now uses GetOptionsContainer to get the frame container for adding options
needed for differences in List and GfxList
b=18895 r=kmcclusk
2000-03-18 14:25:02 +00:00

10864 lines
417 KiB
C++
Raw Blame History

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
*/
#include "nsCSSFrameConstructor.h"
#include "nsIArena.h"
#include "nsCRT.h"
#include "nsIAtom.h"
#include "nsIURL.h"
#include "nsISupportsArray.h"
#include "nsHashtable.h"
#include "nsIHTMLContent.h"
#include "nsIHTMLAttributes.h"
#include "nsIStyleRule.h"
#include "nsIFrame.h"
#include "nsIStyleContext.h"
#include "nsHTMLAtoms.h"
#include "nsIPresContext.h"
#include "nsILinkHandler.h"
#include "nsIDocument.h"
#include "nsIHTMLTableCellElement.h"
#include "nsTableColGroupFrame.h"
#include "nsTableColFrame.h"
#include "nsHTMLIIDs.h"
#include "nsIStyleFrameConstruction.h"
#include "nsHTMLParts.h"
#include "nsIPresShell.h"
#include "nsIStyleSet.h"
#include "nsIViewManager.h"
#include "nsStyleConsts.h"
#include "nsTableOuterFrame.h"
#include "nsIXMLDocument.h"
#include "nsIWebShell.h"
#include "nsHTMLContainerFrame.h"
#include "nsINameSpaceManager.h"
#include "nsLayoutAtoms.h"
#include "nsIDOMHTMLSelectElement.h"
#include "nsIComboboxControlFrame.h"
#include "nsIListControlFrame.h"
#include "nsIRadioControlFrame.h"
#include "nsIListControlFrame.h"
#include "nsIDOMCharacterData.h"
#include "nsIDOMHTMLImageElement.h"
#include "nsITextContent.h"
#include "nsPlaceholderFrame.h"
#include "nsTableRowGroupFrame.h"
#include "nsStyleChangeList.h"
#include "nsIFormControl.h"
#include "nsCSSAtoms.h"
#include "nsIDeviceContext.h"
#include "nsTextFragment.h"
#include "nsISupportsArray.h"
#include "nsIAnonymousContentCreator.h"
#include "nsIFrameManager.h"
#include "nsIAttributeContent.h"
#include "nsIPref.h"
#include "nsLegendFrame.h"
#include "nsTitleFrame.h"
#include "nsIDOMWindow.h"
#include "nsPIDOMWindow.h"
#ifdef INCLUDE_XUL
#include "nsIDOMXULCommandDispatcher.h"
#include "nsIDOMXULDocument.h"
#endif
// XXX - temporary, this is for GfxList View
#include "nsViewsCID.h"
#include "nsWidgetsCID.h"
// to here
#include "nsInlineFrame.h"
#include "nsBlockFrame.h"
#include "nsGfxTextControlFrame.h"
#include "nsIScrollableFrame.h"
#include "nsIServiceManager.h"
#include "nsIXBLService.h"
#undef NOISY_FIRST_LETTER
#ifdef MOZ_MATHML
#include "nsMathMLAtoms.h"
#include "nsMathMLParts.h"
#endif
#ifdef INCLUDE_XUL
#include "nsXULAtoms.h"
#include "nsTreeFrame.h"
#include "nsTreeOuterFrame.h"
#include "nsTreeRowGroupFrame.h"
#include "nsTreeRowFrame.h"
#include "nsToolboxFrame.h"
#include "nsToolbarFrame.h"
#include "nsTreeIndentationFrame.h"
#include "nsTreeCellFrame.h"
#include "nsIDOMElement.h"
#include "nsIDOMDocument.h"
#include "nsDocument.h"
#include "nsToolbarItemFrame.h"
#include "nsXULCheckboxFrame.h"
#include "nsIScrollable.h"
#ifdef DEBUG
static PRBool gNoisyContentUpdates = PR_FALSE;
static PRBool gReallyNoisyContentUpdates = PR_FALSE;
static PRBool gNoisyInlineConstruction = PR_FALSE;
#endif
//------------------------------------------------------------------
// This is temporary while GfxLists and GfxDropdowns are being put in
static PRBool gDoGfxDropdown = PR_FALSE;
static PRBool gDoGfxListbox = PR_FALSE;
#define NEWGFX_LIST_SCROLLFRAME
//------------------------------------------------------------------
nsresult
NS_NewGfxListControlFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewThumbFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewScrollPortFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewGfxScrollFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, nsIDocument* aDocument );
nsresult
NS_NewTabFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewDeckFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewSpringFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewStackFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewProgressMeterFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewTitledButtonFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewXULTextFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewTitledBoxFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewTitledBoxInnerFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewTitleFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewBoxFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, PRBool aIsRoot);
nsresult
NS_NewXULButtonFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame);
nsresult
NS_NewSliderFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewScrollbarFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewSpinnerFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewColorPickerFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewFontPickerFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewScrollbarButtonFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewScrollbarFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewGrippyFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewSplitterFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewMenuPopupFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewPopupSetFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame);
nsresult
NS_NewMenuFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, PRUint32 aFlags );
nsresult
NS_NewMenuBarFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
#endif
//static NS_DEFINE_IID(kIStyleRuleIID, NS_ISTYLE_RULE_IID);
static NS_DEFINE_IID(kIStyleFrameConstructionIID, NS_ISTYLE_FRAME_CONSTRUCTION_IID);
static NS_DEFINE_IID(kIHTMLTableCellElementIID, NS_IHTMLTABLECELLELEMENT_IID);
static NS_DEFINE_IID(kIXMLDocumentIID, NS_IXMLDOCUMENT_IID);
static NS_DEFINE_IID(kIWebShellIID, NS_IWEB_SHELL_IID);
static NS_DEFINE_IID(kIDOMHTMLSelectElementIID, NS_IDOMHTMLSELECTELEMENT_IID);
static NS_DEFINE_IID(kIComboboxControlFrameIID, NS_ICOMBOBOXCONTROLFRAME_IID);
static NS_DEFINE_IID(kIRadioControlFrameIID, NS_IRADIOCONTROLFRAME_IID);
static NS_DEFINE_IID(kIListControlFrameIID, NS_ILISTCONTROLFRAME_IID);
static NS_DEFINE_IID(kIDOMHTMLImageElementIID, NS_IDOMHTMLIMAGEELEMENT_IID);
static NS_DEFINE_IID(kIDOMCharacterDataIID, NS_IDOMCHARACTERDATA_IID);
static NS_DEFINE_IID(kScrollViewIID, NS_ISCROLLABLEVIEW_IID);
static NS_DEFINE_IID(kIFormControlIID, NS_IFORMCONTROL_IID);
static NS_DEFINE_IID(kIFrameIID, NS_IFRAME_IID);
// -----------------------------------------------------------
// Structure used when constructing formatting object trees.
struct nsFrameItems {
nsIFrame* childList;
nsIFrame* lastChild;
nsFrameItems(nsIFrame* aFrame = nsnull);
// Appends the frame to the end of the list
void AddChild(nsIFrame* aChild);
};
nsFrameItems::nsFrameItems(nsIFrame* aFrame)
: childList(aFrame), lastChild(aFrame)
{
}
void
nsFrameItems::AddChild(nsIFrame* aChild)
{
if (childList == nsnull) {
childList = lastChild = aChild;
}
else
{
lastChild->SetNextSibling(aChild);
lastChild = aChild;
}
}
// -----------------------------------------------------------
// Structure used when constructing formatting object trees. Contains
// state information needed for absolutely positioned elements
struct nsAbsoluteItems : nsFrameItems {
// containing block for absolutely positioned elements
nsIFrame* containingBlock;
nsAbsoluteItems(nsIFrame* aContainingBlock = nsnull);
// Appends the frame to the end of the list
void AddChild(nsIFrame* aChild);
};
nsAbsoluteItems::nsAbsoluteItems(nsIFrame* aContainingBlock)
: containingBlock(aContainingBlock)
{
}
// Additional behavior is that it sets the frame's NS_FRAME_OUT_OF_FLOW flag
void
nsAbsoluteItems::AddChild(nsIFrame* aChild)
{
nsFrameState frameState;
// Mark the frame as being moved out of the flow
aChild->GetFrameState(&frameState);
aChild->SetFrameState(frameState | NS_FRAME_OUT_OF_FLOW);
nsFrameItems::AddChild(aChild);
}
// -----------------------------------------------------------
// Structure for saving the existing state when pushing/poping containing
// blocks. The destructor restores the state to its previous state
class nsFrameConstructorSaveState {
public:
nsFrameConstructorSaveState();
~nsFrameConstructorSaveState();
private:
nsAbsoluteItems* mItems; // pointer to struct whose data we save/restore
PRBool* mFirstLetterStyle;
PRBool* mFirstLineStyle;
nsAbsoluteItems mSavedItems; // copy of original data
PRBool mSavedFirstLetterStyle;
PRBool mSavedFirstLineStyle;
friend class nsFrameConstructorState;
};
// Structure used for maintaining state information during the
// frame construction process
class nsFrameConstructorState {
public:
nsCOMPtr<nsIPresShell> mPresShell;
nsCOMPtr<nsIFrameManager> mFrameManager;
// Containing block information for out-of-flow frammes
nsAbsoluteItems mFixedItems;
nsAbsoluteItems mAbsoluteItems;
nsAbsoluteItems mFloatedItems;
PRBool mFirstLetterStyle;
PRBool mFirstLineStyle;
nsCOMPtr<nsILayoutHistoryState> mFrameState;
// Constructor
nsFrameConstructorState(nsIPresContext* aPresContext,
nsIFrame* aFixedContainingBlock,
nsIFrame* aAbsoluteContainingBlock,
nsIFrame* aFloaterContainingBlock,
nsILayoutHistoryState* aFrameState);
// Function to push the existing absolute containing block state and
// create a new scope
void PushAbsoluteContainingBlock(nsIFrame* aNewAbsoluteContainingBlock,
nsFrameConstructorSaveState& aSaveState);
// Function to push the existing floater containing block state and
// create a new scope
void PushFloaterContainingBlock(nsIFrame* aNewFloaterContainingBlock,
nsFrameConstructorSaveState& aSaveState,
PRBool aFirstLetterStyle,
PRBool aFirstLineStyle);
};
nsFrameConstructorState::nsFrameConstructorState(nsIPresContext* aPresContext,
nsIFrame* aFixedContainingBlock,
nsIFrame* aAbsoluteContainingBlock,
nsIFrame* aFloaterContainingBlock,
nsILayoutHistoryState* aFrameState)
: mFixedItems(aFixedContainingBlock),
mAbsoluteItems(aAbsoluteContainingBlock),
mFloatedItems(aFloaterContainingBlock),
mFirstLetterStyle(PR_FALSE),
mFirstLineStyle(PR_FALSE),
mFrameState(aFrameState)
{
aPresContext->GetShell(getter_AddRefs(mPresShell));
mPresShell->GetFrameManager(getter_AddRefs(mFrameManager));
}
void
nsFrameConstructorState::PushAbsoluteContainingBlock(nsIFrame* aNewAbsoluteContainingBlock,
nsFrameConstructorSaveState& aSaveState)
{
aSaveState.mItems = &mAbsoluteItems;
aSaveState.mSavedItems = mAbsoluteItems;
mAbsoluteItems = nsAbsoluteItems(aNewAbsoluteContainingBlock);
}
void
nsFrameConstructorState::PushFloaterContainingBlock(nsIFrame* aNewFloaterContainingBlock,
nsFrameConstructorSaveState& aSaveState,
PRBool aFirstLetterStyle,
PRBool aFirstLineStyle)
{
aSaveState.mItems = &mFloatedItems;
aSaveState.mFirstLetterStyle = &mFirstLetterStyle;
aSaveState.mFirstLineStyle = &mFirstLineStyle;
aSaveState.mSavedItems = mFloatedItems;
aSaveState.mSavedFirstLetterStyle = mFirstLetterStyle;
aSaveState.mSavedFirstLineStyle = mFirstLineStyle;
mFloatedItems = nsAbsoluteItems(aNewFloaterContainingBlock);
mFirstLetterStyle = aFirstLetterStyle;
mFirstLineStyle = aFirstLineStyle;
}
nsFrameConstructorSaveState::nsFrameConstructorSaveState()
: mItems(nsnull), mFirstLetterStyle(nsnull), mFirstLineStyle(nsnull),
mSavedFirstLetterStyle(PR_FALSE), mSavedFirstLineStyle(PR_FALSE)
{
}
nsFrameConstructorSaveState::~nsFrameConstructorSaveState()
{
// Restore the state
if (mItems) {
*mItems = mSavedItems;
}
if (mFirstLetterStyle) {
*mFirstLetterStyle = mSavedFirstLetterStyle;
}
if (mFirstLineStyle) {
*mFirstLineStyle = mSavedFirstLineStyle;
}
}
// -----------------------------------------------------------
// Structure used when creating table frames.
struct nsTableCreator {
virtual nsresult CreateTableOuterFrame(nsIFrame** aNewFrame);
virtual nsresult CreateTableFrame(nsIFrame** aNewFrame);
virtual nsresult CreateTableRowGroupFrame(nsIFrame** aNewFrame);
virtual nsresult CreateTableColFrame(nsIFrame** aNewFrame);
virtual nsresult CreateTableColGroupFrame(nsIFrame** aNewFrame);
virtual nsresult CreateTableRowFrame(nsIFrame** aNewFrame);
virtual nsresult CreateTableCellFrame(nsIFrame** aNewFrame);
virtual nsresult CreateTableCellInnerFrame(nsIFrame** aNewFrame);
virtual PRBool IsTreeCreator() { return PR_FALSE; };
nsTableCreator(nsIPresShell* aPresShell)
{
mPresShell = aPresShell;
}
virtual ~nsTableCreator() {};
nsCOMPtr<nsIPresShell> mPresShell;
};
nsresult
nsTableCreator::CreateTableOuterFrame(nsIFrame** aNewFrame) {
return NS_NewTableOuterFrame(mPresShell, aNewFrame);
}
nsresult
nsTableCreator::CreateTableFrame(nsIFrame** aNewFrame) {
return NS_NewTableFrame(mPresShell, aNewFrame);
}
nsresult
nsTableCreator::CreateTableRowGroupFrame(nsIFrame** aNewFrame) {
return NS_NewTableRowGroupFrame(mPresShell, aNewFrame);
}
nsresult
nsTableCreator::CreateTableColFrame(nsIFrame** aNewFrame) {
return NS_NewTableColFrame(mPresShell, aNewFrame);
}
nsresult
nsTableCreator::CreateTableColGroupFrame(nsIFrame** aNewFrame) {
return NS_NewTableColGroupFrame(mPresShell, aNewFrame);
}
nsresult
nsTableCreator::CreateTableRowFrame(nsIFrame** aNewFrame) {
return NS_NewTableRowFrame(mPresShell, aNewFrame);
}
nsresult
nsTableCreator::CreateTableCellFrame(nsIFrame** aNewFrame) {
return NS_NewTableCellFrame(mPresShell, aNewFrame);
}
nsresult
nsTableCreator::CreateTableCellInnerFrame(nsIFrame** aNewFrame) {
return NS_NewTableCellInnerFrame(mPresShell, aNewFrame);
}
#ifdef INCLUDE_XUL
// Structure used when creating tree frames
struct nsTreeCreator: public nsTableCreator {
nsresult CreateTableOuterFrame(nsIFrame** aNewFrame);
nsresult CreateTableFrame(nsIFrame** aNewFrame);
nsresult CreateTableCellFrame(nsIFrame** aNewFrame);
nsresult CreateTableRowGroupFrame(nsIFrame** aNewFrame);
nsresult CreateTableRowFrame(nsIFrame** aNewFrame);
nsresult CreateTableCellInnerFrame(nsIFrame** aNewFrame);
PRBool IsTreeCreator() { return PR_TRUE; };
nsTreeCreator(nsIPresShell* aPresShell)
:nsTableCreator(aPresShell) {};
};
nsresult
nsTreeCreator::CreateTableOuterFrame(nsIFrame** aNewFrame)
{
return NS_NewTreeOuterFrame(mPresShell, aNewFrame);
}
nsresult
nsTreeCreator::CreateTableFrame(nsIFrame** aNewFrame)
{
return NS_NewTreeFrame(mPresShell, aNewFrame);
}
nsresult
nsTreeCreator::CreateTableCellFrame(nsIFrame** aNewFrame)
{
return NS_NewTreeCellFrame(mPresShell, aNewFrame);
}
nsresult
nsTreeCreator::CreateTableRowGroupFrame(nsIFrame** aNewFrame)
{
return NS_NewTreeRowGroupFrame(mPresShell, aNewFrame);
}
nsresult
nsTreeCreator::CreateTableRowFrame(nsIFrame** aNewFrame) {
return NS_NewTreeRowFrame(mPresShell, aNewFrame);
}
nsresult
nsTreeCreator::CreateTableCellInnerFrame(nsIFrame** aNewFrame) {
return NS_NewBoxFrame(mPresShell, aNewFrame);
//return NS_NewTableCellInnerFrame(mPresShell, aNewFrame);
}
#endif // INCLUDE_XUL
//MathML Mod - RBS
#ifdef MOZ_MATHML
// Structure used when creating MathML mtable frames
struct nsMathMLmtableCreator: public nsTableCreator {
nsresult CreateTableCellInnerFrame(nsIFrame** aNewFrame);
nsMathMLmtableCreator(nsIPresShell* aPresShell)
:nsTableCreator(aPresShell) {};
};
nsresult
nsMathMLmtableCreator::CreateTableCellInnerFrame(nsIFrame** aNewFrame)
{
// only works if aNewFrame is an AreaFrame (to take care of the lineLayout logic)
return NS_NewMathMLmtdFrame(mPresShell, aNewFrame);
}
#endif // MOZ_MATHML
// -----------------------------------------------------------
// return the child list that aFrame belongs on. does not ADDREF
nsIAtom* GetChildListFor(const nsIFrame* aFrame)
{
nsIAtom* childList = nsnull;
nsCOMPtr<nsIAtom> frameType;
aFrame->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::tableCaptionFrame == frameType.get()) {
childList = nsLayoutAtoms::captionList;
}
return childList;
}
nsCSSFrameConstructor::nsCSSFrameConstructor(void)
: nsIStyleFrameConstruction(),
mDocument(nsnull),
mInitialContainingBlock(nsnull),
mFixedContainingBlock(nsnull),
mDocElementContainingBlock(nsnull),
mGfxScrollFrame(nsnull)
{
NS_INIT_REFCNT();
}
nsCSSFrameConstructor::~nsCSSFrameConstructor(void)
{
}
NS_IMPL_ISUPPORTS(nsCSSFrameConstructor, kIStyleFrameConstructionIID);
NS_IMETHODIMP
nsCSSFrameConstructor::Init(nsIDocument* aDocument)
{
NS_PRECONDITION(aDocument, "null ptr");
if (! aDocument)
return NS_ERROR_NULL_POINTER;
if (mDocument)
return NS_ERROR_ALREADY_INITIALIZED;
mDocument = aDocument; // not refcounted!
return NS_OK;
}
// Helper function that determines the child list name that aChildFrame
// is contained in
static void
GetChildListNameFor(nsIPresContext* aPresContext,
nsIFrame* aParentFrame,
nsIFrame* aChildFrame,
nsIAtom** aListName)
{
nsFrameState frameState;
nsIAtom* listName;
// See if the frame is moved out of the flow
aChildFrame->GetFrameState(&frameState);
if (frameState & NS_FRAME_OUT_OF_FLOW) {
// Look at the style information to tell
const nsStylePosition* position;
aChildFrame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct*&)position);
if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition) {
listName = nsLayoutAtoms::absoluteList;
} else if (NS_STYLE_POSITION_FIXED == position->mPosition) {
listName = nsLayoutAtoms::fixedList;
} else {
#ifdef NS_DEBUG
const nsStyleDisplay* display;
aChildFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&)display);
NS_ASSERTION(display->IsFloating(), "not a floated frame");
#endif
listName = nsLayoutAtoms::floaterList;
}
} else {
listName = nsnull;
}
// Verify that the frame is actually in that child list
#ifdef NS_DEBUG
nsIFrame* firstChild;
aParentFrame->FirstChild(aPresContext, listName, &firstChild);
nsFrameList frameList(firstChild);
NS_ASSERTION(frameList.ContainsFrame(aChildFrame), "not in child list");
#endif
NS_IF_ADDREF(listName);
*aListName = listName;
}
nsresult
nsCSSFrameConstructor::CreateGeneratedFrameFor(nsIPresContext* aPresContext,
nsIDocument* aDocument,
nsIFrame* aParentFrame,
nsIContent* aContent,
nsIStyleContext* aStyleContext,
const nsStyleContent* aStyleContent,
PRUint32 aContentIndex,
nsIFrame** aFrame)
{
*aFrame = nsnull; // initialize OUT parameter
// Get the content value
nsStyleContentType type;
nsAutoString contentString;
aStyleContent->GetContentAt(aContentIndex, type, contentString);
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
if (eStyleContentType_URL == type) {
nsIHTMLContent* imageContent;
// Create an HTML image content object, and set the SRC.
// XXX Check if it's an image type we can handle...
NS_NewHTMLImageElement(&imageContent, nsHTMLAtoms::img);
imageContent->SetHTMLAttribute(nsHTMLAtoms::src, contentString, PR_FALSE);
// Set aContent as the parent content and set the document object. This
// way event handling works
imageContent->SetParent(aContent);
imageContent->SetDocument(aDocument, PR_TRUE);
// Create an image frame and initialize it
nsIFrame* imageFrame;
NS_NewImageFrame(shell, &imageFrame);
imageFrame->Init(aPresContext, imageContent, aParentFrame, aStyleContext, nsnull);
NS_RELEASE(imageContent);
// Return the image frame
*aFrame = imageFrame;
} else {
switch (type) {
case eStyleContentType_String:
break;
case eStyleContentType_Attr:
{
nsIAtom* attrName = nsnull;
PRInt32 attrNameSpace = kNameSpaceID_None;
PRInt32 barIndex = contentString.FindChar('|'); // CSS namespace delimiter
if (-1 != barIndex) {
nsAutoString nameSpaceVal;
contentString.Left(nameSpaceVal, barIndex);
PRInt32 error;
attrNameSpace = nameSpaceVal.ToInteger(&error, 10);
contentString.Cut(0, barIndex + 1);
if (contentString.Length()) {
attrName = NS_NewAtom(contentString);
}
}
else {
attrName = NS_NewAtom(contentString);
}
// Creates the content and frame and return if successful
nsresult rv = NS_ERROR_FAILURE;
if (nsnull != attrName) {
nsCOMPtr<nsIContent> content;
nsIFrame* textFrame = nsnull;
NS_NewAttributeContent(getter_AddRefs(content));
if (nsnull != content) {
nsCOMPtr<nsIAttributeContent> attrContent(do_QueryInterface(content));
if (attrContent) {
attrContent->Init(aContent, attrNameSpace, attrName);
}
// Set aContent as the parent content and set the document object. This
// way event handling works
content->SetParent(aContent);
content->SetDocument(aDocument, PR_TRUE);
// Create a text frame and initialize it
NS_NewTextFrame(shell, &textFrame);
textFrame->Init(aPresContext, content, aParentFrame, aStyleContext, nsnull);
// Return the text frame
*aFrame = textFrame;
rv = NS_OK;
}
NS_RELEASE(attrName);
}
return rv;
}
break;
case eStyleContentType_Counter:
case eStyleContentType_Counters:
case eStyleContentType_URL:
return NS_ERROR_NOT_IMPLEMENTED; // XXX not supported yet...
case eStyleContentType_OpenQuote:
case eStyleContentType_CloseQuote:
{
PRUint32 quotesCount = aStyleContent->QuotesCount();
if (quotesCount > 0) {
nsAutoString openQuote, closeQuote;
// If the depth is greater than the number of pairs, the last pair
// is repeated
PRUint32 quoteDepth = 0; // XXX really track the nested quotes...
if (quoteDepth > quotesCount) {
quoteDepth = quotesCount - 1;
}
aStyleContent->GetQuotesAt(quoteDepth, openQuote, closeQuote);
if (eStyleContentType_OpenQuote == type) {
contentString = openQuote;
} else {
contentString = closeQuote;
}
} else {
contentString = '\"';
}
}
break;
case eStyleContentType_NoOpenQuote:
case eStyleContentType_NoCloseQuote:
// XXX Adjust quote depth...
return NS_OK;
} // switch
// Create a text content node
nsIContent* textContent = nsnull;
nsIDOMCharacterData* domData;
nsIFrame* textFrame = nsnull;
NS_NewTextNode(&textContent);
if (textContent) {
// Set the text
textContent->QueryInterface(kIDOMCharacterDataIID, (void**)&domData);
domData->SetData(contentString);
NS_RELEASE(domData);
// Set aContent as the parent content and set the document object. This
// way event handling works
textContent->SetParent(aContent);
textContent->SetDocument(aDocument, PR_TRUE);
// Create a text frame and initialize it
NS_NewTextFrame(shell, &textFrame);
textFrame->Init(aPresContext, textContent, aParentFrame, aStyleContext, nsnull);
NS_RELEASE(textContent);
}
// Return the text frame
*aFrame = textFrame;
}
return NS_OK;
}
PRBool
nsCSSFrameConstructor::CreateGeneratedContentFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIFrame* aFrame,
nsIContent* aContent,
nsIStyleContext* aStyleContext,
nsIAtom* aPseudoElement,
PRBool aForBlock,
nsIFrame** aResult)
{
*aResult = nsnull; // initialize OUT parameter
// Probe for the existence of the pseudo-element
nsCOMPtr<nsIStyleContext> pseudoStyleContext;
aPresContext->ProbePseudoStyleContextFor(aContent, aPseudoElement, aStyleContext,
PR_FALSE, getter_AddRefs(pseudoStyleContext));
if (pseudoStyleContext) {
const nsStyleDisplay* display;
// See whether the generated content should be displayed.
display = (const nsStyleDisplay*)pseudoStyleContext->GetStyleData(eStyleStruct_Display);
if (NS_STYLE_DISPLAY_NONE == display->mDisplay) {
aState.mFrameManager->SetUndisplayedPseudoIn(pseudoStyleContext, aContent);
}
else { // has valid display type
// See if there was any content specified
const nsStyleContent* styleContent =
(const nsStyleContent*)pseudoStyleContext->GetStyleData(eStyleStruct_Content);
PRUint32 contentCount = styleContent->ContentCount();
if (contentCount > 0) {
PRUint8 displayValue = display->mDisplay;
// Make sure the 'display' property value is allowable
const nsStyleDisplay* subjectDisplay = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
if (subjectDisplay->IsBlockLevel()) {
// For block-level elements the only allowed 'display' values are:
// 'none', 'inline', 'block', and 'marker'
if ((NS_STYLE_DISPLAY_INLINE != displayValue) &&
(NS_STYLE_DISPLAY_BLOCK != displayValue) &&
(NS_STYLE_DISPLAY_MARKER != displayValue)) {
// Pseudo-element behaves as if the value were 'block'
displayValue = NS_STYLE_DISPLAY_BLOCK;
}
} else {
// For inline-level elements the only allowed 'display' values are
// 'none' and 'inline'
displayValue = NS_STYLE_DISPLAY_INLINE;
}
if (display->mDisplay != displayValue) {
// Reset the value
nsStyleDisplay* mutableDisplay = (nsStyleDisplay*)
pseudoStyleContext->GetMutableStyleData(eStyleStruct_Display);
mutableDisplay->mDisplay = displayValue;
}
// Also make sure the 'position' property is 'static'. :before and :after
// pseudo-elements can not be floated or positioned
const nsStylePosition * stylePosition =
(const nsStylePosition*)pseudoStyleContext->GetStyleData(eStyleStruct_Position);
if (NS_STYLE_POSITION_NORMAL != stylePosition->mPosition) {
// Reset the value
nsStylePosition* mutablePosition = (nsStylePosition*)
pseudoStyleContext->GetMutableStyleData(eStyleStruct_Position);
mutablePosition->mPosition = NS_STYLE_POSITION_NORMAL;
}
// Create a block box or an inline box depending on the value of
// the 'display' property
nsIFrame* containerFrame;
nsFrameItems childFrames;
nsCOMPtr<nsIDOMElement>containerElement;
nsCOMPtr<nsIContent> containerContent;
nsCOMPtr<nsIDocument> document;
aContent->GetDocument(*getter_AddRefs(document));
nsCOMPtr<nsIDOMDocument> domdoc(do_QueryInterface(document));
nsresult result;
result = domdoc->CreateElement("SPAN",getter_AddRefs(containerElement));//is the literal the correct way?
if (NS_SUCCEEDED(result) && containerElement)
{
containerContent = do_QueryInterface(containerElement);
}//do NOT use YET set this up for later checkin. this will be the content of the new frame.
if (NS_STYLE_DISPLAY_BLOCK == displayValue) {
NS_NewBlockFrame(aPresShell, &containerFrame);
} else {
NS_NewInlineFrame(aPresShell, &containerFrame);
}
InitAndRestoreFrame(aPresContext, aState, aContent,
aFrame, pseudoStyleContext, nsnull, containerFrame);
// Mark the frame as being associated with generated content
nsFrameState frameState;
containerFrame->GetFrameState(&frameState);
frameState |= NS_FRAME_GENERATED_CONTENT;
containerFrame->SetFrameState(frameState);
// Create another pseudo style context to use for all the generated child
// frames
nsIStyleContext* textStyleContext;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::textPseudo,
pseudoStyleContext, PR_FALSE,
&textStyleContext);
// Now create content objects (and child frames) for each value of the
// 'content' property
for (PRUint32 contentIndex = 0; contentIndex < contentCount; contentIndex++) {
nsIFrame* frame;
nsresult result;
// Create a frame
result = CreateGeneratedFrameFor(aPresContext, document, containerFrame,
aContent, textStyleContext,
styleContent, contentIndex, &frame);
if (NS_SUCCEEDED(result) && frame) {
// Add it to the list of child frames
childFrames.AddChild(frame);
}
}
NS_RELEASE(textStyleContext);
if (childFrames.childList) {
containerFrame->SetInitialChildList(aPresContext, nsnull, childFrames.childList);
}
*aResult = containerFrame;
return PR_TRUE;
}
}
}
return PR_FALSE;
}
#if 0
static PRBool
IsEmptyTextContent(nsIContent* aContent)
{
PRBool result = PR_FALSE;
nsCOMPtr<nsITextContent> tc(do_QueryInterface(aContent));
if (tc) {
tc->IsOnlyWhitespace(&result);
}
return result;
}
#include "nsIDOMHTMLParagraphElement.h"
static PRBool
IsHTMLParagraph(nsIContent* aContent)
{
nsCOMPtr<nsIDOMHTMLParagraphElement> p(do_QueryInterface(aContent));
PRBool status = PR_FALSE;
if (p) {
status = PR_TRUE;
}
return status;
}
static PRBool
IsEmptyContainer(nsIContent* aContainer)
{
// Check each kid and if each kid is empty text content (or there
// are no kids) then return true.
PRInt32 i, numKids;
aContainer->ChildCount(numKids);
for (i = 0; i < numKids; i++) {
nsCOMPtr<nsIContent> kid;
aContainer->ChildAt(i, *getter_AddRefs(kid));
if (kid.get()) {
if (!IsEmptyTextContent(kid)) {
return PR_FALSE;
}
}
}
return PR_TRUE;
}
static PRBool
IsEmptyHTMLParagraph(nsIContent* aContent)
{
if (!IsHTMLParagraph(aContent)) {
// It's not an HTML paragraph so return false
return PR_FALSE;
}
return IsEmptyContainer(aContent);
}
#endif
nsresult
nsCSSFrameConstructor::CreateInputFrame(nsIPresShell *aPresShell,
nsIPresContext *aPresContext,
nsIContent *aContent,
nsIFrame *&aFrame,
nsIStyleContext *aStyleContext)
{
nsresult rv;
// Figure out which type of input frame to create
nsAutoString val;
if (NS_OK == aContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::type, val)) {
if (val.EqualsIgnoreCase("submit")) {
rv = ConstructButtonControlFrame(aPresShell, aPresContext, aFrame);
}
else if (val.EqualsIgnoreCase("reset")) {
rv = ConstructButtonControlFrame(aPresShell, aPresContext, aFrame);
}
else if (val.EqualsIgnoreCase("button")) {
rv = ConstructButtonControlFrame(aPresShell, aPresContext, aFrame);
}
else if (val.EqualsIgnoreCase("checkbox")) {
rv = ConstructCheckboxControlFrame(aPresShell, aPresContext, aFrame);
}
else if (val.EqualsIgnoreCase("file")) {
rv = NS_NewFileControlFrame(aPresShell, &aFrame);
}
else if (val.EqualsIgnoreCase("hidden")) {
rv = ConstructButtonControlFrame(aPresShell, aPresContext, aFrame);
}
else if (val.EqualsIgnoreCase("image")) {
rv = NS_NewImageControlFrame(aPresShell, &aFrame);
}
else if (val.EqualsIgnoreCase("password")) {
rv = ConstructTextControlFrame(aPresShell, aPresContext, aFrame, aContent);
}
else if (val.EqualsIgnoreCase("radio")) {
rv = ConstructRadioControlFrame(aPresShell, aPresContext, aFrame, aContent, aStyleContext);
}
else if (val.EqualsIgnoreCase("text")) {
rv = ConstructTextControlFrame(aPresShell, aPresContext, aFrame, aContent);
}
else {
rv = ConstructTextControlFrame(aPresShell, aPresContext, aFrame, aContent);
}
} else {
rv = ConstructTextControlFrame(aPresShell, aPresContext, aFrame, aContent);
}
return rv;
}
/****************************************************
** BEGIN TABLE SECTION
****************************************************/
struct nsTableList {
nsTableList() {
mInner = mChild = nsnull;
}
void Set(nsIFrame* aInner, nsIFrame* aChild) {
mInner = aInner;
mChild = aChild;
}
nsIFrame* mInner;
nsIFrame* mChild;
};
// Construct the outer, inner table frames and the children frames for the table.
// Tables can have any table-related child.
nsresult
nsCSSFrameConstructor::ConstructTableFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewFrame,
nsTableCreator& aTableCreator)
{
nsresult rv = NS_OK;
nsIFrame* childList;
nsIFrame* innerFrame;
nsIFrame* innerChildList = nsnull;
nsIFrame* captionFrame = nsnull;
// Create an anonymous table outer frame which holds the caption and table frame
aTableCreator.CreateTableOuterFrame(&aNewFrame);
// Init the table outer frame and see if we need to create a view, e.g.
// the frame is absolutely positioned
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, aNewFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, aNewFrame,
aStyleContext, PR_FALSE);
nsCOMPtr<nsIStyleContext> parentStyleContext;
aParentFrame->GetStyleContext(getter_AddRefs(parentStyleContext));
#if 0
nsCOMPtr<nsIStyleContext> outerStyleContext;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableOuterPseudo,
parentStyleContext,
getter_AddRefs(outerStyleContext));
aNewFrame->Init(aPresContext, aContent, aParentFrame, outerStyleContext);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, aNewFrame,
outerStyleContext, PR_FALSE);
#endif
// Create the inner table frame
aTableCreator.CreateTableFrame(&innerFrame);
childList = innerFrame;
InitAndRestoreFrame(aPresContext, aState, aContent,
aNewFrame, aStyleContext, nsnull, innerFrame);
nsIFrame* lastChildFrame = nsnull;
PRInt32 count;
aContent->ChildCount(count);
for (PRInt32 i = 0; i < count; i++) { // iterate the child content
nsCOMPtr<nsIContent> childContent;
if (NS_SUCCEEDED(aContent->ChildAt(i, *getter_AddRefs(childContent)))) {
nsIFrame* childFrame = nsnull;
nsIFrame* ignore1;
nsIFrame* ignore2;
nsCOMPtr<nsIStyleContext> childStyleContext;
// Resolve the style context and get its display
aPresContext->ResolveStyleContextFor(childContent, aStyleContext,
PR_FALSE,
getter_AddRefs(childStyleContext));
const nsStyleDisplay* styleDisplay = (const nsStyleDisplay*)
childStyleContext->GetStyleData(eStyleStruct_Display);
switch (styleDisplay->mDisplay) {
case NS_STYLE_DISPLAY_TABLE_CAPTION:
if (nsnull == captionFrame) { // only allow one caption
// XXX should absolute items be passed along?
rv = ConstructTableCaptionFrame(aPresShell, aPresContext, aState, childContent, aNewFrame,
childStyleContext, ignore1, captionFrame, aTableCreator);
}
break;
case NS_STYLE_DISPLAY_TABLE_HEADER_GROUP:
case NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP:
case NS_STYLE_DISPLAY_TABLE_ROW_GROUP:
case NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP:
{
PRBool isRowGroup = (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP != styleDisplay->mDisplay);
rv = ConstructTableGroupFrame(aPresShell, aPresContext, aState, childContent, innerFrame,
childStyleContext, isRowGroup, childFrame, ignore1,
aTableCreator);
break;
}
case NS_STYLE_DISPLAY_TABLE_ROW:
rv = ConstructTableRowFrame(aPresShell, aPresContext, aState, childContent, innerFrame,
childStyleContext, childFrame, ignore1, aTableCreator);
break;
case NS_STYLE_DISPLAY_TABLE_COLUMN:
rv = ConstructTableColFrame(aPresShell, aPresContext, aState, childContent, innerFrame,
childStyleContext, childFrame, ignore1, aTableCreator);
break;
case NS_STYLE_DISPLAY_TABLE_CELL:
rv = ConstructTableCellFrame(aPresShell, aPresContext, aState, childContent, innerFrame,
childStyleContext, childFrame, ignore1, ignore2, aTableCreator);
break;
default:
//nsIFrame* nonTableRelatedFrame;
//nsIAtom* tag;
//childContent->GetTag(tag);
//ConstructFrameByTag(aPresContext, childContent, aNewFrame, tag, childStyleContext,
// aAbsoluteItems, nonTableRelatedFrame);
//childList->SetNextSibling(nonTableRelatedFrame);
//NS_IF_RELEASE(tag);
nsFrameItems childItems;
TableProcessChild(aPresShell, aPresContext, aState, childContent, innerFrame, parentStyleContext,
childItems, aTableCreator);
childFrame = childItems.childList; // XXX: Need to change this whole function to return a list of frames
// rather than a single frame. - DWH
break;
}
// for every table related frame except captions, link into the child list
if (nsnull != childFrame) {
if (nsnull == lastChildFrame) {
innerChildList = childFrame;
} else {
lastChildFrame->SetNextSibling(childFrame);
}
lastChildFrame = childFrame;
}
}
}
// Set the inner table frame's initial primary list
innerFrame->SetInitialChildList(aPresContext, nsnull, innerChildList);
// Set the outer table frame's primary and option lists
aNewFrame->SetInitialChildList(aPresContext, nsnull, childList);
if (captionFrame) {
aNewFrame->SetInitialChildList(aPresContext, nsLayoutAtoms::captionList, captionFrame);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructAnonymousTableFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIFrame*& aNewTopFrame,
nsIFrame*& aOuterFrame,
nsIFrame*& aInnerFrame,
nsTableCreator& aTableCreator)
{
nsresult rv = NS_OK;
//NS_WARNING("an anonymous table frame was created. \n");
nsCOMPtr<nsIStyleContext> parentStyleContext;
aParentFrame->GetStyleContext(getter_AddRefs(parentStyleContext));
const nsStyleDisplay* parentDisplay =
(const nsStyleDisplay*) parentStyleContext->GetStyleData(eStyleStruct_Display);
PRBool cellIsParent = PR_TRUE;
nsIFrame* cellFrame;
nsIFrame* cellBodyFrame;
nsCOMPtr<nsIStyleContext> cellStyleContext;
nsIFrame* ignore;
// construct the ancestors of anonymous table frames
switch(parentDisplay->mDisplay) {
case NS_STYLE_DISPLAY_TABLE_CELL:
break;
case NS_STYLE_DISPLAY_TABLE_ROW: // construct a cell
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableCellPseudo, parentStyleContext,
PR_FALSE, getter_AddRefs(cellStyleContext));
rv = ConstructTableCellFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, cellStyleContext,
aNewTopFrame, cellFrame, cellBodyFrame, aTableCreator, PR_FALSE);
break;
case NS_STYLE_DISPLAY_TABLE_ROW_GROUP: // construct a row & a cell
case NS_STYLE_DISPLAY_TABLE_HEADER_GROUP:
case NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP:
{
nsIFrame* rowFrame;
nsCOMPtr<nsIStyleContext> rowStyleContext;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableRowPseudo,
parentStyleContext, PR_FALSE,
getter_AddRefs(rowStyleContext));
rv = ConstructTableRowFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, rowStyleContext,
aNewTopFrame, rowFrame, aTableCreator);
if (NS_FAILED(rv)) return rv;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableCellPseudo, parentStyleContext,
PR_FALSE, getter_AddRefs(cellStyleContext));
rv = ConstructTableCellFrame(aPresShell, aPresContext, aState, aContent, rowFrame, cellStyleContext,
ignore, cellFrame, cellBodyFrame, aTableCreator, PR_FALSE);
rowFrame->SetInitialChildList(aPresContext, nsnull, cellFrame);
break;
}
case NS_STYLE_DISPLAY_TABLE: // construct a row group, a row, & a cell
{
nsIFrame* groupFrame;
nsCOMPtr<nsIStyleContext> groupStyleContext;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableRowGroupPseudo,
parentStyleContext, PR_FALSE,
getter_AddRefs(groupStyleContext));
rv = ConstructTableGroupFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, groupStyleContext,
PR_TRUE, aNewTopFrame, groupFrame, aTableCreator);
if (NS_FAILED(rv)) return rv;
nsIFrame* rowFrame;
nsCOMPtr<nsIStyleContext> rowStyleContext;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableRowPseudo,
parentStyleContext, PR_FALSE,
getter_AddRefs(rowStyleContext));
rv = ConstructTableRowFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, rowStyleContext,
ignore, rowFrame, aTableCreator);
if (NS_FAILED(rv)) return rv;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableCellPseudo, parentStyleContext,
PR_FALSE, getter_AddRefs(cellStyleContext));
rv = ConstructTableCellFrame(aPresShell, aPresContext, aState, aContent, rowFrame, cellStyleContext,
ignore, cellFrame, cellBodyFrame, aTableCreator, PR_FALSE);
rowFrame->SetInitialChildList(aPresContext, nsnull, cellFrame);
groupFrame->SetInitialChildList(aPresContext, nsnull, rowFrame);
break;
}
default:
cellIsParent = PR_FALSE;
}
// create the outer table, inner table frames and make the cell frame the parent of the
// outer frame
if (NS_SUCCEEDED(rv)) {
// create the outer table frame
nsIFrame* tableParent = nsnull;
nsIStyleContext* tableParentSC;
if (cellIsParent) {
tableParent = cellFrame;
tableParentSC = cellStyleContext;
} else {
tableParent = aParentFrame;
tableParentSC = parentStyleContext;
}
nsCOMPtr<nsIStyleContext> outerStyleContext;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableOuterPseudo,
tableParentSC, PR_FALSE,
getter_AddRefs(outerStyleContext));
rv = aTableCreator.CreateTableOuterFrame(&aOuterFrame);
if (NS_FAILED(rv)) return rv;
InitAndRestoreFrame(aPresContext, aState, aContent,
tableParent, outerStyleContext, nsnull, aOuterFrame);
// create the inner table frame
nsCOMPtr<nsIStyleContext> innerStyleContext;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tablePseudo,
outerStyleContext, PR_FALSE,
getter_AddRefs(innerStyleContext));
rv = aTableCreator.CreateTableFrame(&aInnerFrame);
if (NS_FAILED(rv)) return rv;
InitAndRestoreFrame(aPresContext, aState, aContent,
aOuterFrame, innerStyleContext, nsnull, aInnerFrame);
//XXX when bug 2479 is fixed this may be a duplicate call
aOuterFrame->SetInitialChildList(aPresContext, nsnull, aInnerFrame);
if (cellIsParent) {
cellBodyFrame->SetInitialChildList(aPresContext, nsnull, aOuterFrame);
} else {
aNewTopFrame = aOuterFrame;
}
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableCaptionFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewTopFrame,
nsIFrame*& aNewCaptionFrame,
nsTableCreator& aTableCreator)
{
nsresult rv = NS_NewTableCaptionFrame(aPresShell, &aNewCaptionFrame);
if (NS_FAILED(rv)) return rv;
const nsStyleDisplay* parentDisplay = GetDisplay(aParentFrame);
nsIFrame* outerFrame = aParentFrame;
if (NS_STYLE_DISPLAY_TABLE == parentDisplay->mDisplay) { // parent is an outer table
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, aNewCaptionFrame);
// the caller is responsible for calling SetInitialChildList
aNewTopFrame = aNewCaptionFrame;
} else { // parent is not a table, need to create a new table
//NS_WARNING("a non table contains a table caption child. \n");
nsIFrame* innerFrame;
ConstructAnonymousTableFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
aNewTopFrame, outerFrame, innerFrame, aTableCreator);
nsCOMPtr<nsIStyleContext> outerStyleContext;
outerFrame->GetStyleContext(getter_AddRefs(outerStyleContext));
nsCOMPtr<nsIStyleContext> adjStyleContext;
aPresContext->ResolveStyleContextFor(aContent, outerStyleContext,
PR_FALSE, getter_AddRefs(adjStyleContext));
InitAndRestoreFrame(aPresContext, aState, aContent,
outerFrame, adjStyleContext, nsnull, aNewCaptionFrame);
aState.mFrameManager->SetPrimaryFrameFor(aContent, aNewCaptionFrame);
}
// The caption frame is a floater container
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
nsFrameConstructorSaveState floaterSaveState;
aState.PushFloaterContainingBlock(aNewCaptionFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
// Process the child content
nsFrameItems childItems;
ProcessChildren(aPresShell, aPresContext, aState, aContent, aNewCaptionFrame,
PR_TRUE, childItems, PR_TRUE);
aNewCaptionFrame->SetInitialChildList(aPresContext, nsnull,
childItems.childList);
if (aState.mFloatedItems.childList) {
aNewCaptionFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
return rv;
}
// if aParentFrame is a table, it is assummed that it is an inner table
nsresult
nsCSSFrameConstructor::ConstructTableGroupFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
PRBool aIsRowGroup,
nsIFrame*& aNewTopFrame,
nsIFrame*& aNewGroupFrame,
nsTableCreator& aTableCreator,
nsTableList* aToDo)
{
nsresult rv = NS_OK;
const nsStyleDisplay* styleDisplay = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
nsCOMPtr<nsIStyleContext> styleContext( dont_QueryInterface(aStyleContext) );
// TRUE if we are being called from above, FALSE if from below (e.g. row)
PRBool contentDisplayIsGroup =
(aIsRowGroup) ? (NS_STYLE_DISPLAY_TABLE_ROW_GROUP == styleDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_TABLE_HEADER_GROUP == styleDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP == styleDisplay->mDisplay)
: (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == styleDisplay->mDisplay);
if (!contentDisplayIsGroup) {
NS_ASSERTION(aToDo, "null nsTableList when constructing from below");
if (!aToDo)
return NS_ERROR_NULL_POINTER;
}
nsCOMPtr<nsIStyleContext> parentStyleContext;
aParentFrame->GetStyleContext(getter_AddRefs(parentStyleContext));
const nsStyleDisplay* parentDisplay =
(const nsStyleDisplay*) parentStyleContext->GetStyleData(eStyleStruct_Display);
if (NS_STYLE_DISPLAY_TABLE == parentDisplay->mDisplay) { // parent is an inner table
if (!contentDisplayIsGroup) { // called from row below
nsIAtom* pseudoGroup = (aIsRowGroup) ? nsHTMLAtoms::tableRowGroupPseudo : nsHTMLAtoms::tableColGroupPseudo;
aPresContext->ResolvePseudoStyleContextFor(aContent, pseudoGroup, parentStyleContext,
PR_FALSE, getter_AddRefs(styleContext));
}
// only process the group's children if we're called from above
rv = ConstructTableGroupFrameOnly(aPresShell, aPresContext, aState, aContent, aParentFrame,
styleContext, aIsRowGroup, aNewTopFrame, aNewGroupFrame,
aTableCreator, contentDisplayIsGroup);
} else if (aTableCreator.IsTreeCreator() &&
parentDisplay->mDisplay == NS_STYLE_DISPLAY_TABLE_ROW_GROUP) {
// We're a tree view. We want to allow nested row groups.
// only process the group's children if we're called from above
rv = ConstructTableGroupFrameOnly(aPresShell, aPresContext, aState, aContent, aParentFrame,
styleContext, aIsRowGroup, aNewTopFrame, aNewGroupFrame,
aTableCreator, contentDisplayIsGroup);
} else { // construct anonymous frames
//NS_WARNING("a non table contains a table row or col group child. \n");
nsIFrame* innerFrame;
nsIFrame* outerFrame;
ConstructAnonymousTableFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, aNewTopFrame,
outerFrame, innerFrame, aTableCreator);
nsCOMPtr<nsIStyleContext> innerStyleContext;
innerFrame->GetStyleContext(getter_AddRefs(innerStyleContext));
if (contentDisplayIsGroup) { // called from above
aPresContext->ResolveStyleContextFor(aContent, innerStyleContext, PR_FALSE,
getter_AddRefs(styleContext));
} else { // called from row below
nsIAtom* pseudoGroup = (aIsRowGroup) ? nsHTMLAtoms::tableRowGroupPseudo : nsHTMLAtoms::tableColGroupPseudo;
aPresContext->ResolvePseudoStyleContextFor(aContent, pseudoGroup, innerStyleContext,
PR_FALSE, getter_AddRefs(styleContext));
}
nsIFrame* topFrame;
// only process the group's children if we're called from above
rv = ConstructTableGroupFrameOnly(aPresShell, aPresContext, aState, aContent, innerFrame,
styleContext, aIsRowGroup, topFrame, aNewGroupFrame,
aTableCreator, contentDisplayIsGroup);
if (NS_FAILED(rv)) return rv;
if (contentDisplayIsGroup) { // called from above
innerFrame->SetInitialChildList(aPresContext, nsnull, topFrame);
// set the primary frame to avoid getting the anonymous table frame
aState.mFrameManager->SetPrimaryFrameFor(aContent, aNewGroupFrame);
} else { // called from row below
aToDo->Set(innerFrame, topFrame);
}
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableGroupFrameOnly(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
PRBool aIsRowGroup,
nsIFrame*& aNewTopFrame,
nsIFrame*& aNewGroupFrame,
nsTableCreator& aTableCreator,
PRBool aProcessChildren)
{
nsresult rv = NS_OK;
const nsStyleDisplay* styleDisplay =
(const nsStyleDisplay*) aStyleContext->GetStyleData(eStyleStruct_Display);
rv = (aIsRowGroup) ? aTableCreator.CreateTableRowGroupFrame(&aNewGroupFrame)
: aTableCreator.CreateTableColGroupFrame(&aNewGroupFrame);
if (IsScrollable(aPresContext, styleDisplay)) {
// Create an area container for the frame
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, aStyleContext, aNewGroupFrame, aParentFrame,
aNewTopFrame, aStyleContext);
} else {
if (NS_FAILED(rv)) return rv;
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, aNewGroupFrame);
aNewTopFrame = aNewGroupFrame;
}
if (aProcessChildren) {
nsFrameItems childItems;
if (aIsRowGroup) {
// Create some anonymous extras within the tree body.
if (aTableCreator.IsTreeCreator()) {
const nsStyleDisplay *parentDisplay;
aParentFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)parentDisplay);
if (parentDisplay->mDisplay == NS_STYLE_DISPLAY_TABLE_ROW_GROUP) {
// We're the child of another row group. If it's lazy, we're lazy.
((nsTreeRowGroupFrame*)aNewGroupFrame)->SetFrameConstructor(this);
}
else if (parentDisplay->mDisplay == NS_STYLE_DISPLAY_TABLE) {
// We're the child of a table.
// See if our parent is a tree.
// We will want to have a scrollbar.
((nsTreeRowGroupFrame*)aNewGroupFrame)->SetFrameConstructor(this);
}
}
TableProcessChildren(aPresShell, aPresContext, aState, aContent, aNewGroupFrame,
childItems, aTableCreator);
} else {
ProcessChildren(aPresShell, aPresContext, aState, aContent, aNewGroupFrame,
PR_FALSE, childItems, PR_FALSE);
}
aNewGroupFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableRowFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewTopFrame,
nsIFrame*& aNewRowFrame,
nsTableCreator& aTableCreator,
nsTableList* aToDo)
{
nsresult rv = NS_OK;
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
// TRUE if we are being called from above, FALSE if from below (e.g. cell)
PRBool contentDisplayIsRow = (NS_STYLE_DISPLAY_TABLE_ROW == display->mDisplay);
if (!contentDisplayIsRow) {
NS_ASSERTION(aToDo, "null nsTableList when constructing from below");
}
nsCOMPtr<nsIStyleContext> groupStyleContext;
nsCOMPtr<nsIStyleContext> styleContext( dont_QueryInterface(aStyleContext) );
const nsStyleDisplay* parentDisplay = GetDisplay(aParentFrame);
if ((NS_STYLE_DISPLAY_TABLE_ROW_GROUP == parentDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_TABLE_HEADER_GROUP == parentDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP == parentDisplay->mDisplay)) {
if (!contentDisplayIsRow) { // content is from some (soon to be) child of ours
// EDV this will not work.
// 1) This crashes because the aParent is already what you think it is, event if it
// is scrollable.
// 2) If the we had gfx scrollbars turned on the first child would have been
// a scrollport!!
//aParentFrame = TableGetAsNonScrollFrame(aPresContext, aParentFrame, parentDisplay);
aParentFrame->GetStyleContext(getter_AddRefs(groupStyleContext));
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableRowPseudo,
groupStyleContext, PR_FALSE,
getter_AddRefs(styleContext));
}
// only process the row's children if we're called from above
rv = ConstructTableRowFrameOnly(aPresShell, aPresContext, aState, aContent, aParentFrame,
styleContext, contentDisplayIsRow, aNewRowFrame,
aTableCreator);
aNewTopFrame = aNewRowFrame;
} else { // construct an anonymous row group frame
nsIFrame* groupFrame;
nsTableList localToDo;
nsTableList* toDo = (aToDo) ? aToDo : &localToDo;
// it may also need to create a table frame
rv = ConstructTableGroupFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, styleContext,
PR_TRUE, aNewTopFrame, groupFrame, aTableCreator, toDo);
if (NS_FAILED(rv)) return rv;
groupFrame->GetStyleContext(getter_AddRefs(groupStyleContext));
if (contentDisplayIsRow) { // called from above
aPresContext->ResolveStyleContextFor(aContent, groupStyleContext,
PR_FALSE, getter_AddRefs(styleContext));
} else { // called from cell below
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableRowPseudo,
groupStyleContext, PR_FALSE,
getter_AddRefs(styleContext));
}
// only process the row's children if we're called from above
rv = ConstructTableRowFrameOnly(aPresShell, aPresContext, aState, aContent, groupFrame, styleContext,
contentDisplayIsRow, aNewRowFrame, aTableCreator);
if (NS_FAILED(rv)) return rv;
//XXX when bug 2479 is fixed this may be a duplicate call
groupFrame->SetInitialChildList(aPresContext, nsnull, aNewRowFrame);
if (contentDisplayIsRow) { // called from above
// set the primary frame to avoid getting the anonymous row group frame
aState.mFrameManager->SetPrimaryFrameFor(aContent, aNewRowFrame);
}
if (contentDisplayIsRow) { // called from above
TableProcessTableList(aPresContext, *toDo);
}
}
if (aState.mFrameManager)
aState.mFrameManager->SetPrimaryFrameFor(aContent, aNewRowFrame);
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableRowFrameOnly(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
PRBool aProcessChildren,
nsIFrame*& aNewRowFrame,
nsTableCreator& aTableCreator)
{
nsresult rv = aTableCreator.CreateTableRowFrame(&aNewRowFrame);
if (NS_FAILED(rv)) return rv;
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, aNewRowFrame);
if (aProcessChildren) {
nsFrameItems childItems;
rv = TableProcessChildren(aPresShell, aPresContext, aState, aContent, aNewRowFrame,
childItems, aTableCreator);
if (NS_FAILED(rv)) return rv;
aNewRowFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableColFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewTopFrame,
nsIFrame*& aNewColFrame,
nsTableCreator& aTableCreator)
{
nsresult rv = NS_OK;
// the content display here is always table-col and were always called from above
const nsStyleDisplay* parentDisplay = GetDisplay(aParentFrame);
if (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == parentDisplay->mDisplay) {
rv = ConstructTableColFrameOnly(aPresShell, aPresContext, aState, aContent, aParentFrame,
aStyleContext, aNewColFrame, aTableCreator);
aNewTopFrame = aNewColFrame;
} else { // construct anonymous col group frame
nsTableList toDo;
nsIFrame* groupFrame;
rv = ConstructTableGroupFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
aStyleContext, PR_FALSE, aNewTopFrame, groupFrame,
aTableCreator, &toDo);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIStyleContext> groupStyleContext;
groupFrame->GetStyleContext(getter_AddRefs(groupStyleContext));
nsCOMPtr<nsIStyleContext> styleContext;
aPresContext->ResolveStyleContextFor(aContent, groupStyleContext,
PR_FALSE, getter_AddRefs(styleContext));
rv = ConstructTableColFrameOnly(aPresShell, aPresContext, aState, aContent, groupFrame,
styleContext, aNewColFrame, aTableCreator);
if (NS_FAILED(rv)) return rv;
aState.mFrameManager->SetPrimaryFrameFor(aContent, aNewColFrame);
//XXX when bug 2479 is fixed this may be a duplicate call
groupFrame->SetInitialChildList(aPresContext, nsnull, aNewColFrame);
// if an anoymous table got created, then set its initial child list
TableProcessTableList(aPresContext, toDo);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableColFrameOnly(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewColFrame,
nsTableCreator& aTableCreator)
{
nsresult rv = aTableCreator.CreateTableColFrame(&aNewColFrame);
if (NS_FAILED(rv)) return rv;
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, aNewColFrame);
nsFrameItems colChildItems;
rv = ProcessChildren(aPresShell, aPresContext, aState, aContent, aNewColFrame,
PR_FALSE, colChildItems, PR_FALSE);
if (NS_FAILED(rv)) return rv;
aNewColFrame->SetInitialChildList(aPresContext, nsnull,
colChildItems.childList);
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableCellFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewTopFrame,
nsIFrame*& aNewCellFrame,
nsIFrame*& aNewCellBodyFrame,
nsTableCreator& aTableCreator,
PRBool aProcessChildren)
{
nsresult rv = NS_OK;
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
// FALSE if we are being called to wrap a cell around the content
PRBool contentDisplayIsCell = (NS_STYLE_DISPLAY_TABLE_CELL == display->mDisplay);
nsCOMPtr<nsIStyleContext> parentStyleContext;
aParentFrame->GetStyleContext(getter_AddRefs(parentStyleContext));
const nsStyleDisplay* parentDisplay = (const nsStyleDisplay*)
parentStyleContext->GetStyleData(eStyleStruct_Display);
nsCOMPtr<nsIStyleContext> styleContext( dont_QueryInterface(aStyleContext) );
PRBool wrapContent = PR_FALSE;
if (NS_STYLE_DISPLAY_TABLE_ROW == parentDisplay->mDisplay) {
nsCOMPtr<nsIStyleContext> styleContextRelease;
if (!contentDisplayIsCell) { // need to wrap
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableCellPseudo,
parentStyleContext,
PR_FALSE,
getter_AddRefs(styleContext));
wrapContent = PR_TRUE;
}
rv = ConstructTableCellFrameOnly(aPresShell, aPresContext, aState, aContent, aParentFrame,
styleContext, aNewCellFrame, aNewCellBodyFrame,
aTableCreator, aProcessChildren);
aNewTopFrame = aNewCellFrame;
} else { // the cell needs some ancestors to be fabricated
//NS_WARNING("WARNING - a non table row contains a table cell child. \n");
nsTableList toDo;
nsIFrame* rowFrame;
rv = ConstructTableRowFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
aStyleContext, aNewTopFrame, rowFrame, aTableCreator,
&toDo);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIStyleContext> rowStyleContext;
rowFrame->GetStyleContext(getter_AddRefs(rowStyleContext));
if (contentDisplayIsCell) {
aPresContext->ResolveStyleContextFor(aContent, rowStyleContext,
PR_FALSE, getter_AddRefs(styleContext));
} else {
wrapContent = PR_TRUE; // XXX
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableCellPseudo,
rowStyleContext, PR_FALSE,
getter_AddRefs(styleContext));
}
rv = ConstructTableCellFrameOnly(aPresShell, aPresContext, aState, aContent, rowFrame,
styleContext, aNewCellFrame, aNewCellBodyFrame,
aTableCreator, aProcessChildren);
if (NS_FAILED(rv)) return rv;
//XXX when bug 2479 is fixed this may be a duplicate call
rowFrame->SetInitialChildList(aPresContext, nsnull, aNewCellFrame);
TableProcessTableList(aPresContext, toDo);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableCellFrameOnly(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewCellFrame,
nsIFrame*& aNewCellBodyFrame,
nsTableCreator& aTableCreator,
PRBool aProcessChildren)
{
nsresult rv;
// Create a table cell frame
rv = aTableCreator.CreateTableCellFrame(&aNewCellFrame);
if (NS_FAILED(rv)) return rv;
// Initialize the table cell frame
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, aNewCellFrame);
// Create an area frame that will format the cell's content
rv = aTableCreator.CreateTableCellInnerFrame(&aNewCellBodyFrame);
if (NS_FAILED(rv)) {
aNewCellFrame->Destroy(aPresContext);
aNewCellFrame = nsnull;
return rv;
}
// Resolve pseudo style and initialize the body cell frame
nsCOMPtr<nsIStyleContext> bodyPseudoStyle;
aPresContext->ResolvePseudoStyleContextFor(aContent,
nsHTMLAtoms::cellContentPseudo,
aStyleContext, PR_FALSE,
getter_AddRefs(bodyPseudoStyle));
InitAndRestoreFrame(aPresContext, aState, aContent,
aNewCellFrame, bodyPseudoStyle, nsnull, aNewCellBodyFrame);
if (aProcessChildren) {
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
// The area frame is a floater container
nsFrameConstructorSaveState floaterSaveState;
aState.PushFloaterContainingBlock(aNewCellBodyFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
// Process the child content
nsFrameItems childItems;
rv = ProcessChildren(aPresShell, aPresContext, aState, aContent,
aNewCellBodyFrame, PR_TRUE, childItems, PR_TRUE);
if (NS_FAILED(rv)) return rv;
// if there are any anonymous children create frames for them
nsCOMPtr<nsIAtom> tagName;
aContent->GetTag(*getter_AddRefs(tagName));
if (tagName && tagName.get() == nsXULAtoms::treecell) {
CreateAnonymousTreeCellFrames(aPresShell, aPresContext, tagName, aState, aContent, aNewCellBodyFrame,
aNewCellFrame, childItems);
}
aNewCellBodyFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (aState.mFloatedItems.childList) {
aNewCellBodyFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
}
aNewCellFrame->SetInitialChildList(aPresContext, nsnull, aNewCellBodyFrame);
return rv;
}
// This is only called by table row groups and rows. It allows children that are not
// table related to have a cell wrapped around them.
nsresult
nsCSSFrameConstructor::TableProcessChildren(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsFrameItems& aChildItems,
nsTableCreator& aTableCreator)
{
nsresult rv = NS_OK;
// Iterate the child content objects and construct a frame
PRInt32 count;
nsCOMPtr<nsIStyleContext> parentStyleContext;
aParentFrame->GetStyleContext(getter_AddRefs(parentStyleContext));
const nsStyleDisplay* display = (const nsStyleDisplay*)
parentStyleContext->GetStyleData(eStyleStruct_Display);
if (aTableCreator.IsTreeCreator() &&
(display->mDisplay == NS_STYLE_DISPLAY_TABLE_ROW_GROUP)) {
// Stop the processing if we're lazy. The tree row group frame builds its children
// as needed.
return NS_OK;
}
aContent->ChildCount(count);
for (PRInt32 i = 0; i < count; i++) {
nsCOMPtr<nsIContent> childContent;
aContent->ChildAt(i, *getter_AddRefs(childContent));
rv = TableProcessChild(aPresShell, aPresContext, aState, childContent, aParentFrame, parentStyleContext,
aChildItems, aTableCreator);
}
return rv;
}
nsresult
nsCSSFrameConstructor::TableProcessChild(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aChildContent,
nsIFrame* aParentFrame,
nsIStyleContext* aParentStyleContext,
nsFrameItems& aChildItems,
nsTableCreator& aTableCreator)
{
nsresult rv = NS_OK;
if (nsnull != aChildContent) {
nsCOMPtr<nsIStyleContext> childStyleContext;
aPresContext->ResolveStyleContextFor(aChildContent, aParentStyleContext,
PR_FALSE,
getter_AddRefs(childStyleContext));
const nsStyleDisplay* childDisplay = (const nsStyleDisplay*)
childStyleContext->GetStyleData(eStyleStruct_Display);
if (IsTableRelated(childDisplay->mDisplay)) {
rv = ConstructFrame(aPresShell, aPresContext, aState, aChildContent, aParentFrame, aChildItems);
} else {
nsCOMPtr<nsIAtom> tag;
aChildContent->GetTag(*getter_AddRefs(tag));
// XXX this needs to be fixed so that the form can work without
// a frame. This is *disgusting*
// forms, form controls need a frame but it can't be a child of an inner table
nsIFormControl* formControl = nsnull;
nsresult fcResult = aChildContent->QueryInterface(kIFormControlIID, (void**)&formControl);
NS_IF_RELEASE(formControl);
if ((nsHTMLAtoms::form == tag.get()) || NS_SUCCEEDED(fcResult)) {
// if the parent is a table, put the form in the outer table frame
const nsStyleDisplay* parentDisplay = (const nsStyleDisplay*)
aParentStyleContext->GetStyleData(eStyleStruct_Display);
if (parentDisplay->mDisplay == NS_STYLE_DISPLAY_TABLE) {
nsIFrame* outerFrame;
aParentFrame->GetParent(&outerFrame);
rv = ConstructFrame(aPresShell, aPresContext, aState, aChildContent, outerFrame, aChildItems);
// XXX: Seems like this is going into the inner frame's child list instead of the outer frame. - DWH
} else {
rv = ConstructFrame(aPresShell, aPresContext, aState, aChildContent, aParentFrame, aChildItems);
}
// wrap it in a table cell, row, row group, table if it is a valid tag or display
// and not whitespace. For example we don't allow map, head, body, etc.
} else {
if (TableIsValidCellContent(aPresContext, aParentFrame, aChildContent)) {
PRBool needCell = PR_TRUE;
nsIDOMCharacterData* domData = nsnull;
nsresult rv2 = aChildContent->QueryInterface(kIDOMCharacterDataIID, (void**)&domData);
if ((NS_OK == rv2) && (nsnull != domData)) {
nsString charData;
domData->GetData(charData);
charData = charData.StripWhitespace();
if ((charData.Length() <= 0) && (charData != " ")) { // XXX check this
needCell = PR_FALSE; // only contains whitespace, don't create cell
}
NS_RELEASE(domData);
}
if (needCell) {
nsIFrame* cellBodyFrame;
nsIFrame* cellFrame;
nsIFrame* childFrame; // XXX: Need to change the ConstructTableCell function to return lists of frames. - DWH
rv = ConstructTableCellFrame(aPresShell, aPresContext, aState, aChildContent, aParentFrame, childStyleContext,
childFrame, cellFrame, cellBodyFrame, aTableCreator);
aChildItems.AddChild(childFrame);
}
}
}
}
}
return rv;
}
PRBool
nsCSSFrameConstructor::TableIsValidCellContent(nsIPresContext* aPresContext,
nsIFrame* aParentFrame,
nsIContent* aContent)
{
nsCOMPtr<nsIAtom> tag;
aContent->GetTag(*getter_AddRefs(tag));
nsCOMPtr<nsIStyleContext> styleContext;
nsresult rv = ResolveStyleContext(aPresContext, aParentFrame, aContent, tag, getter_AddRefs(styleContext));
if (NS_FAILED(rv)) {
return PR_FALSE;
}
const nsStyleDisplay* display = (const nsStyleDisplay*)
styleContext->GetStyleData(eStyleStruct_Display);
if (NS_STYLE_DISPLAY_NONE != display->mDisplay) {
return PR_FALSE;
}
// check tags first
if ( (nsHTMLAtoms::img == tag.get()) ||
(nsHTMLAtoms::hr == tag.get()) ||
(nsHTMLAtoms::br == tag.get()) ||
(nsHTMLAtoms::wbr == tag.get()) ||
(nsHTMLAtoms::input == tag.get()) ||
(nsHTMLAtoms::textarea == tag.get()) ||
(nsHTMLAtoms::select == tag.get()) ||
(nsHTMLAtoms::applet == tag.get()) ||
(nsHTMLAtoms::embed == tag.get()) ||
(nsHTMLAtoms::fieldset == tag.get()) ||
(nsHTMLAtoms::legend == tag.get()) ||
(nsHTMLAtoms::object == tag.get()) ||
(nsHTMLAtoms::form == tag.get()) ||
(nsHTMLAtoms::iframe == tag.get()) ||
(nsHTMLAtoms::spacer == tag.get()) ||
(nsHTMLAtoms::button == tag.get()) ||
(nsHTMLAtoms::label == tag.get() )) {
return PR_TRUE;
}
#ifdef INCLUDE_XUL
if ( (nsXULAtoms::button == tag.get()) ||
(nsXULAtoms::titledbutton == tag.get()) ||
(nsXULAtoms::image == tag.get()) ||
(nsXULAtoms::grippy == tag.get()) ||
(nsXULAtoms::splitter == tag.get()) ||
(nsXULAtoms::slider == tag.get()) ||
(nsXULAtoms::spinner == tag.get()) ||
(nsXULAtoms::scrollbar == tag.get()) ||
(nsXULAtoms::scrollbarbutton == tag.get()) ||
(nsXULAtoms::thumb == tag.get()) ||
(nsXULAtoms::colorpicker == tag.get()) ||
(nsXULAtoms::fontpicker == tag.get()) ||
(nsXULAtoms::text == tag.get()) ||
(nsXULAtoms::widget == tag.get()) ||
(nsXULAtoms::tree == tag.get()) ||
(nsXULAtoms::treechildren == tag.get()) ||
(nsXULAtoms::treeitem == tag.get()) ||
(nsXULAtoms::treerow == tag.get()) ||
(nsXULAtoms::treecell == tag.get()) ||
(nsXULAtoms::treeindentation == tag.get()) ||
(nsXULAtoms::treecol == tag.get()) ||
(nsXULAtoms::treecolgroup == tag.get()) ||
(nsXULAtoms::treefoot == tag.get()) ||
(nsXULAtoms::menu == tag.get()) ||
(nsXULAtoms::menuitem == tag.get()) ||
(nsXULAtoms::menubar == tag.get()) ||
(nsXULAtoms::menupopup == tag.get()) ||
(nsXULAtoms::popupset == tag.get()) ||
(nsXULAtoms::popup == tag.get()) ||
(nsXULAtoms::toolbox == tag.get()) ||
(nsXULAtoms::toolbar == tag.get()) ||
(nsXULAtoms::toolbaritem == tag.get()) ||
(nsXULAtoms::stack == tag.get()) ||
(nsXULAtoms::deck == tag.get()) ||
(nsXULAtoms::spring == tag.get()) ||
(nsXULAtoms::title == tag.get()) ||
(nsXULAtoms::titledbox == tag.get()) ||
(nsXULAtoms::tabcontrol == tag.get()) ||
(nsXULAtoms::tabbox == tag.get()) ||
(nsXULAtoms::tabpanel == tag.get()) ||
(nsXULAtoms::tabpage == tag.get()) ||
(nsXULAtoms::progressbar == tag.get()) ||
(nsXULAtoms::checkbox == tag.get()) ||
(nsXULAtoms::radio == tag.get()) ||
(nsXULAtoms::menulist == tag.get()) ||
(nsXULAtoms::menubutton == tag.get()) ||
(nsXULAtoms::textfield == tag.get()) ||
(nsXULAtoms::textarea == tag.get())
) {
return PR_TRUE;
}
#endif
//MathML Mod - DJF
#ifdef MOZ_MATHML
if ( (nsMathMLAtoms::math == tag.get()) ) {
return PR_TRUE;
}
#endif
// we should check for display type as well - later
return PR_FALSE;
}
nsresult
nsCSSFrameConstructor::TableProcessTableList(nsIPresContext* aPresContext,
nsTableList& aTableList)
{
nsresult rv = NS_OK;
nsIFrame* inner = (nsIFrame*)aTableList.mInner;
if (inner) {
nsIFrame* child = (nsIFrame*)aTableList.mChild;
rv = inner->SetInitialChildList(aPresContext, nsnull, child);
}
return rv;
}
nsIFrame*
nsCSSFrameConstructor::TableGetAsNonScrollFrame(nsIPresContext* aPresContext,
nsIFrame* aFrame,
const nsStyleDisplay* aDisplay)
{
if (nsnull == aFrame) {
return nsnull;
}
nsIFrame* result = aFrame;
if (IsScrollable(aPresContext, aDisplay)) {
aFrame->FirstChild(aPresContext, nsnull, &result);
}
return result;
}
// nsIAtom* pseudoTag;
// styleContext->GetPseudoType(pseudoTag);
// if (pseudoTag != nsLayoutAtoms::scrolledContentPseudo) {
// NS_IF_RELEASE(pseudoTag);
const nsStyleDisplay*
nsCSSFrameConstructor:: GetDisplay(nsIFrame* aFrame)
{
if (nsnull == aFrame) {
return nsnull;
}
nsCOMPtr<nsIStyleContext> styleContext;
aFrame->GetStyleContext(getter_AddRefs(styleContext));
const nsStyleDisplay* display =
(const nsStyleDisplay*)styleContext->GetStyleData(eStyleStruct_Display);
return display;
}
PRBool
nsCSSFrameConstructor::IsTableRelated(PRUint8 aDisplay)
{
return (aDisplay == NS_STYLE_DISPLAY_TABLE) ||
(aDisplay == NS_STYLE_DISPLAY_TABLE_HEADER_GROUP) ||
(aDisplay == NS_STYLE_DISPLAY_TABLE_ROW_GROUP) ||
(aDisplay == NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP) ||
(aDisplay == NS_STYLE_DISPLAY_TABLE_ROW) ||
(aDisplay == NS_STYLE_DISPLAY_TABLE_COLUMN) ||
(aDisplay == NS_STYLE_DISPLAY_TABLE_CELL);
}
/***********************************************
* END TABLE SECTION
***********************************************/
nsresult
nsCSSFrameConstructor::ConstructDocElementTableFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIContent* aDocElement,
nsIFrame* aParentFrame,
nsIFrame*& aNewTableFrame,
nsILayoutHistoryState* aFrameState)
{
nsFrameConstructorState state(aPresContext, nsnull, nsnull, nsnull, aFrameState);
nsFrameItems frameItems;
ConstructFrame(aPresShell, aPresContext, state, aDocElement, aParentFrame, frameItems);
aNewTableFrame = frameItems.childList;
return NS_OK;
}
/**
* New one
*/
nsresult
nsCSSFrameConstructor::ConstructDocElementFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aDocElement,
nsIFrame* aParentFrame,
nsIStyleContext* aParentStyleContext,
nsIFrame*& aNewFrame)
{
// how the root frame hierarchy should look
/*
---------------No Scrollbars------
AreaFrame or BoxFrame (InitialContainingBlock)
---------------Native Scrollbars------
ScrollFrame
^
|
AreaFrame or BoxFrame (InitialContainingBlock)
---------------Gfx Scrollbars ------
GfxScrollFrame
^
|
ScrollPort
^
|
AreaFrame or BoxFrame (InitialContainingBlock)
*/
if (!mTempFrameTreeState)
aPresShell->GetHistoryState(getter_AddRefs(mTempFrameTreeState));
// ----- reattach gfx scrollbars ------
// Gfx scrollframes were created in the root frame but the primary frame map may have been destroyed if a
// new style sheet was loaded so lets reattach the frames to their content.
if (mGfxScrollFrame)
{
nsIFrame* scrollPort = nsnull;
mGfxScrollFrame->FirstChild(aPresContext, nsnull, &scrollPort);
nsIFrame* gfxScrollbarFrame1 = nsnull;
nsIFrame* gfxScrollbarFrame2 = nsnull;
nsresult rv = scrollPort->GetNextSibling(&gfxScrollbarFrame1);
rv = gfxScrollbarFrame1->GetNextSibling(&gfxScrollbarFrame2);
nsCOMPtr<nsIContent> content;
gfxScrollbarFrame1->GetContent(getter_AddRefs(content));
aState.mFrameManager->SetPrimaryFrameFor(content, gfxScrollbarFrame1);
gfxScrollbarFrame2->GetContent(getter_AddRefs(content));
aState.mFrameManager->SetPrimaryFrameFor(content, gfxScrollbarFrame2);
}
// --------- CREATE AREA OR BOX FRAME -------
nsCOMPtr<nsIStyleContext> styleContext;
aPresContext->ResolveStyleContextFor(aDocElement, aParentStyleContext,
PR_FALSE,
getter_AddRefs(styleContext));
const nsStyleDisplay* display =
(const nsStyleDisplay*)styleContext->GetStyleData(eStyleStruct_Display);
PRBool docElemIsTable = IsTableRelated(display->mDisplay);
// --------- IF SCROLLABLE WRAP IN SCROLLFRAME --------
PRBool isScrollable = IsScrollable(aPresContext, display);
PRBool isPaginated = PR_FALSE;
aPresContext->IsPaginated(&isPaginated);
nsIFrame* scrollFrame = nsnull;
// build a scrollframe
if (!isPaginated && isScrollable) {
nsIFrame* newScrollFrame = nsnull;
nsCOMPtr<nsIDocument> document;
aDocElement->GetDocument(*getter_AddRefs(document));
nsCOMPtr<nsIStyleContext> newContext;
BeginBuildingScrollFrame( aPresShell, aPresContext,
aState,
aDocElement,
styleContext,
aParentFrame,
nsLayoutAtoms::scrolledContentPseudo,
document,
scrollFrame,
newContext,
newScrollFrame);
styleContext = newContext;
aParentFrame = newScrollFrame;
}
nsIFrame* contentFrame = nsnull;
PRBool isBlockFrame = PR_FALSE;
if (docElemIsTable) {
// if the document is a table then just populate it.
ConstructDocElementTableFrame(aPresShell, aPresContext, aDocElement,
aParentFrame, contentFrame,
aState.mFrameState);
contentFrame->GetStyleContext(getter_AddRefs(styleContext));
} else {
// otherwise build a box or a block
PRInt32 nameSpaceID;
if (NS_SUCCEEDED(aDocElement->GetNameSpaceID(nameSpaceID)) &&
nameSpaceID == nsXULAtoms::nameSpaceID) {
NS_NewBoxFrame(aPresShell, &contentFrame, PR_TRUE);
}
else {
NS_NewDocumentElementFrame(aPresShell, &contentFrame);
isBlockFrame = PR_TRUE;
}
// initialize the child
InitAndRestoreFrame(aPresContext, aState, aDocElement,
aParentFrame, styleContext, nsnull, contentFrame);
}
// set the primary frame
aState.mFrameManager->SetPrimaryFrameFor(aDocElement, contentFrame);
// Finish building the scrollframe
if (isScrollable) {
FinishBuildingScrollFrame(aPresContext,
aState,
aDocElement,
aParentFrame,
contentFrame,
styleContext);
// primary is set above (to the contentFrame)
aNewFrame = scrollFrame;
} else {
// if not scrollable the new frame is the content frame.
aNewFrame = contentFrame;
}
mInitialContainingBlock = contentFrame;
// if it was a table then we don't need to process our children.
if (!docElemIsTable) {
// Process the child content
nsFrameConstructorSaveState absoluteSaveState;
nsFrameConstructorSaveState floaterSaveState;
nsFrameItems childItems;
// XXX these next lines are wrong for BoxFrame
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aDocElement, styleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
aState.PushAbsoluteContainingBlock(contentFrame, absoluteSaveState);
aState.PushFloaterContainingBlock(contentFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
ProcessChildren(aPresShell, aPresContext, aState, aDocElement, contentFrame,
PR_TRUE, childItems, isBlockFrame);
// See if the document element has a fixed background attachment.
// Note: the reason we wait until after processing the document element's
// children is because of special treatment of the background for the HTML
// element. See BodyFixupRule::MapStyleInto() for details
const nsStyleColor* color;
color = (const nsStyleColor*)styleContext->GetStyleData(eStyleStruct_Color);
if (NS_STYLE_BG_ATTACHMENT_FIXED == color->mBackgroundAttachment) {
// Fixed background attachments are handled by setting the
// NS_VIEW_PUBLIC_FLAG_DONT_BITBLT flag bit on the view.
//
// If the document element's frame is scrollable, then set the bit on its
// view; otherwise, set it on the root frame's view. This avoids
// unnecessarily creating another view and should be faster
nsIView* view;
if (IsScrollable(aPresContext, display)) {
contentFrame->GetView(aPresContext, &view);
} else {
nsIFrame* parentFrame;
contentFrame->GetParent(&parentFrame);
parentFrame->GetView(aPresContext, &view);
}
// Not all shells have scroll frames, even in scrollable presContext (bug 30317)
if (view) {
PRUint32 viewFlags;
view->GetViewFlags(&viewFlags);
view->SetViewFlags(viewFlags | NS_VIEW_PUBLIC_FLAG_DONT_BITBLT);
}
}
// Set the initial child lists
contentFrame->SetInitialChildList(aPresContext, nsnull,
childItems.childList);
// only support absolute positioning if we are a block.
// if we are a box don't do it.
if (isBlockFrame) {
if (aState.mAbsoluteItems.childList) {
contentFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::absoluteList,
aState.mAbsoluteItems.childList);
}
if (aState.mFloatedItems.childList) {
contentFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
}
}
return NS_OK;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ConstructRootFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIContent* aDocElement,
nsIFrame*& aNewFrame)
{
// how the root frame hierarchy should look
/*
---------------No Scrollbars------
ViewPortFrame (FixedContainingBlock) <---- RootView
^
|
RootFrame(DocElementContainingBlock)
---------------Native Scrollbars------
ViewPortFrame (FixedContainingBlock) <---- RootView
^
|
ScrollFrame <--- RootScrollableView
^
|
RootFrame(DocElementContainingBlock)
---------------Gfx Scrollbars ------
ViewPortFrame (FixedContainingBlock) <---- RootView
^
|
GfxScrollFrame
^
|
ScrollPort <--- RootScrollableView
^
|
RootFrame(DocElementContainingBlock)
*/
// --------- BUILD VIEWPORT -----------
nsIFrame* viewportFrame = nsnull;
nsCOMPtr<nsIStyleContext> viewportPseudoStyle;
aPresContext->ResolvePseudoStyleContextFor(nsnull, nsLayoutAtoms::viewportPseudo,
nsnull, PR_FALSE,
getter_AddRefs(viewportPseudoStyle));
{ // ensure that the viewport thinks it is a block frame, layout goes pootsy if it doesn't
nsStyleDisplay* display = (nsStyleDisplay*)viewportPseudoStyle->GetMutableStyleData(eStyleStruct_Display);
display->mDisplay = NS_STYLE_DISPLAY_BLOCK;
}
NS_NewViewportFrame(aPresShell, &viewportFrame);
viewportFrame->Init(aPresContext, nsnull, nsnull, viewportPseudoStyle, nsnull);
// Bind the viewport frame to the root view
nsCOMPtr<nsIPresShell> presShell;
aPresContext->GetShell(getter_AddRefs(presShell));
nsCOMPtr<nsIViewManager> viewManager;
presShell->GetViewManager(getter_AddRefs(viewManager));
nsIView* rootView;
viewManager->GetRootView(rootView);
viewportFrame->SetView(aPresContext, rootView);
// The viewport is the containing block for 'fixed' elements
mFixedContainingBlock = viewportFrame;
// --------- CREATE ROOT FRAME -------
// Create the root frame. The document element's frame is a child of the
// root frame.
//
// The root frame serves two purposes:
// - reserves space for any margins needed for the document element's frame
// - makes sure that the document element's frame covers the entire canvas
PRBool isPaginated = PR_FALSE;
aPresContext->IsPaginated(&isPaginated);
nsIFrame* rootFrame = nsnull;
nsIAtom* rootPseudo;
if (!isPaginated) {
NS_NewRootFrame(aPresShell, &rootFrame);
rootPseudo = nsLayoutAtoms::canvasPseudo;
mDocElementContainingBlock = rootFrame;
} else {
// Create a page sequence frame
NS_NewSimplePageSequenceFrame(aPresShell, &rootFrame);
rootPseudo = nsLayoutAtoms::pageSequencePseudo;
}
// --------- IF SCROLLABLE WRAP IN SCROLLFRAME --------
// If the device supports scrolling (e.g., in galley mode on the screen and
// for print-preview, but not when printing), then create a scroll frame that
// will act as the scrolling mechanism for the viewport.
// XXX Do we even need a viewport when printing to a printer?
// XXX It would be nice to have a better way to query for whether the device
// is scrollable
PRBool isScrollable = PR_TRUE;
if (aPresContext) {
nsIDeviceContext* dc;
aPresContext->GetDeviceContext(&dc);
if (dc) {
PRBool supportsWidgets;
if (NS_SUCCEEDED(dc->SupportsNativeWidgets(supportsWidgets))) {
isScrollable = supportsWidgets;
}
NS_RELEASE(dc);
}
}
// As long as the webshell doesn't prohibit it, and the device supports
// it, create a scroll frame that will act as the scolling mechanism for
// the viewport.
//
// Threre are three possible values stored in the docshell:
// 1) NS_STYLE_OVERFLOW_HIDDEN = no scrollbars
// 2) NS_STYLE_OVERFLOW_AUTO = scrollbars appear if needed
// 3) NS_STYLE_OVERFLOW_SCROLL = scrollbars always
// Only need to create a scroll frame/view for cases 2 and 3.
// Currently OVERFLOW_SCROLL isn't honored, as
// scrollportview::SetScrollPref is not implemented.
PRInt32 nameSpaceID; // Never create scrollbars for XUL documents
if (NS_SUCCEEDED(aDocElement->GetNameSpaceID(nameSpaceID)) &&
nameSpaceID == nsXULAtoms::nameSpaceID) {
isScrollable = PR_FALSE;
} else {
nsresult rv;
nsCOMPtr<nsISupports> container;
if (nsnull != aPresContext) {
aPresContext->GetContainer(getter_AddRefs(container));
if (nsnull != container) {
nsCOMPtr<nsIScrollable> scrollableContainer = do_QueryInterface(container, &rv);
if (NS_SUCCEEDED(rv) && scrollableContainer) {
PRInt32 scrolling = -1;
// XXX We should get prefs for X and Y and deal with these independently!
scrollableContainer->GetCurrentScrollbarPreferences(nsIScrollable::ScrollOrientation_Y,&scrolling);
if (NS_STYLE_OVERFLOW_HIDDEN == scrolling) {
isScrollable = PR_FALSE;
}
// XXX NS_STYLE_OVERFLOW_SCROLL should create 'always on' scrollbars
}
}
}
}
nsIFrame* newFrame = rootFrame;
nsCOMPtr<nsIStyleContext> rootPseudoStyle;
// we must create a state because if the scrollbars are GFX it needs the
// state to build the scrollbar frames.
nsFrameConstructorState state(aPresContext,
nsnull,
nsnull,
nsnull,
nsnull);
nsIFrame* parentFrame = viewportFrame;
if (isScrollable) {
// built the frame. We give it the content we are wrapping which is the document,
// the root frame, the parent view port frame, and we should get back the new
// frame and the scrollable view if one was created.
// resolve a context for the scrollframe
nsCOMPtr<nsIStyleContext> styleContext;
aPresContext->ResolvePseudoStyleContextFor(nsnull,
nsLayoutAtoms::viewportScrollPseudo,
viewportPseudoStyle, PR_FALSE,
getter_AddRefs(styleContext));
nsIFrame* newScrollableFrame = nsnull;
nsCOMPtr<nsIDocument> document;
aDocElement->GetDocument(*getter_AddRefs(document));
BeginBuildingScrollFrame( aPresShell,
aPresContext,
state,
nsnull,
styleContext,
viewportFrame,
rootPseudo,
document,
newFrame,
rootPseudoStyle,
newScrollableFrame);
// Inform the view manager about the root scrollable view
// get the scrolling view
nsIView* view = nsnull;
newScrollableFrame->GetView(aPresContext, &view);
nsIScrollableView* scrollableView;
view->QueryInterface(kScrollViewIID, (void**)&scrollableView);
viewManager->SetRootScrollableView(scrollableView);
parentFrame = newScrollableFrame;
// if gfx scrollbars store them
if (HasGfxScrollbars(aPresContext)) {
mGfxScrollFrame = newFrame;
} else {
mGfxScrollFrame = nsnull;
}
} else {
aPresContext->ResolvePseudoStyleContextFor(nsnull, rootPseudo,
viewportPseudoStyle,
PR_FALSE,
getter_AddRefs(rootPseudoStyle));
}
rootFrame->Init(aPresContext, nsnull, parentFrame, rootPseudoStyle, nsnull);
if (isScrollable) {
FinishBuildingScrollFrame(aPresContext,
state,
aDocElement,
parentFrame,
rootFrame,
rootPseudoStyle);
// set the primary frame to the root frame
state.mFrameManager->SetPrimaryFrameFor(aDocElement, rootFrame);
}
if (isPaginated) {
// Create the first page
nsIFrame* pageFrame;
NS_NewPageFrame(aPresShell, &pageFrame);
// The page is the containing block for 'fixed' elements. which are repeated
// on every page
mFixedContainingBlock = pageFrame;
// Initialize the page and force it to have a view. This makes printing of
// the pages easier and faster.
nsCOMPtr<nsIStyleContext> pagePseudoStyle;
aPresContext->ResolvePseudoStyleContextFor(nsnull, nsLayoutAtoms::pagePseudo,
rootPseudoStyle, PR_FALSE,
getter_AddRefs(pagePseudoStyle));
pageFrame->Init(aPresContext, nsnull, rootFrame, pagePseudoStyle,
nsnull);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, pageFrame,
pagePseudoStyle, PR_TRUE);
// The eventual parent of the document element frame
mDocElementContainingBlock = pageFrame;
// Set the initial child lists
rootFrame->SetInitialChildList(aPresContext, nsnull, pageFrame);
}
viewportFrame->SetInitialChildList(aPresContext, nsnull, newFrame);
aNewFrame = viewportFrame;
return NS_OK;
}
nsresult
nsCSSFrameConstructor::CreatePlaceholderFrameFor(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrameManager* aFrameManager,
nsIContent* aContent,
nsIFrame* aFrame,
nsIStyleContext* aStyleContext,
nsIFrame* aParentFrame,
nsIFrame** aPlaceholderFrame)
{
nsPlaceholderFrame* placeholderFrame;
nsresult rv = NS_NewPlaceholderFrame(aPresShell, (nsIFrame**)&placeholderFrame);
if (NS_SUCCEEDED(rv)) {
// The placeholder frame gets a pseudo style context
nsCOMPtr<nsIStyleContext> placeholderPseudoStyle;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::placeholderPseudo,
aStyleContext,
PR_FALSE,
getter_AddRefs(placeholderPseudoStyle));
placeholderFrame->Init(aPresContext, aContent, aParentFrame,
placeholderPseudoStyle, nsnull);
// Add mapping from absolutely positioned frame to its placeholder frame
aFrameManager->SetPlaceholderFrameFor(aFrame, placeholderFrame);
// The placeholder frame has a pointer back to the out-of-flow frame
placeholderFrame->SetOutOfFlowFrame(aFrame);
*aPlaceholderFrame = NS_STATIC_CAST(nsIFrame*, placeholderFrame);
}
return rv;
}
nsWidgetRendering
nsCSSFrameConstructor::GetFormElementRenderingMode(nsIPresContext* aPresContext,
nsWidgetType aWidgetType)
{
if (!aPresContext) { return eWidgetRendering_Gfx;}
nsWidgetRendering mode;
aPresContext->GetWidgetRenderingMode(&mode);
switch (mode)
{
case eWidgetRendering_Gfx:
return eWidgetRendering_Gfx;
case eWidgetRendering_PartialGfx:
switch (aWidgetType)
{
case eWidgetType_Button:
case eWidgetType_Checkbox:
case eWidgetType_Radio:
case eWidgetType_Text:
return eWidgetRendering_Gfx;
default:
return eWidgetRendering_Native;
}
case eWidgetRendering_Native:
PRBool useNativeWidgets = PR_FALSE;
nsIDeviceContext* dc;
aPresContext->GetDeviceContext(&dc);
if (dc) {
PRBool supportsWidgets;
if (NS_SUCCEEDED(dc->SupportsNativeWidgets(supportsWidgets))) {
useNativeWidgets = supportsWidgets;
}
NS_RELEASE(dc);
}
if (useNativeWidgets)
return eWidgetRendering_Native;
else
return eWidgetRendering_Gfx;
}
return eWidgetRendering_Gfx;
}
nsresult
nsCSSFrameConstructor::ConstructRadioControlFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame*& aNewFrame,
nsIContent* aContent,
nsIStyleContext* aStyleContext)
{
nsresult rv = NS_OK;
if (GetFormElementRenderingMode(aPresContext, eWidgetType_Radio) == eWidgetRendering_Gfx)
rv = NS_NewGfxRadioControlFrame(aPresShell, &aNewFrame);
else
NS_ASSERTION(0, "We longer support native widgets");
if (NS_FAILED(rv)) {
aNewFrame = nsnull;
return rv;
}
nsCOMPtr<nsIStyleContext> radioStyle;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::radioPseudo,
aStyleContext, PR_FALSE, getter_AddRefs(radioStyle));
nsIRadioControlFrame* radio = nsnull;
if (aNewFrame != nsnull && NS_SUCCEEDED(aNewFrame->QueryInterface(kIRadioControlFrameIID, (void**)&radio))) {
radio->SetRadioButtonFaceStyleContext(radioStyle);
NS_RELEASE(radio);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructCheckboxControlFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame*& aNewFrame)
{
nsresult rv = NS_OK;
if (GetFormElementRenderingMode(aPresContext, eWidgetType_Checkbox) == eWidgetRendering_Gfx)
rv = NS_NewGfxCheckboxControlFrame(aPresShell, &aNewFrame);
else
NS_ASSERTION(0, "We longer support native widgets");
if (NS_FAILED(rv)) {
aNewFrame = nsnull;
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructButtonControlFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame*& aNewFrame)
{
nsresult rv = NS_OK;
if (GetFormElementRenderingMode(aPresContext, eWidgetType_Button) == eWidgetRendering_Gfx)
rv = NS_NewGfxButtonControlFrame(aPresShell, &aNewFrame);
else
NS_ASSERTION(0, "We longer support native widgets");
if (NS_FAILED(rv)) {
aNewFrame = nsnull;
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTextControlFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame*& aNewFrame,
nsIContent* aContent)
{
if (!aPresContext) { return NS_ERROR_NULL_POINTER;}
nsresult rv = NS_OK;
//Do we want an Autocomplete input text widget?
nsString val1;
nsString val2;
if ((NS_OK == aContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::autocompletetimeout, val1)) ||
(NS_OK == aContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::autocompletetype, val2))) {
if (! val1.IsEmpty() || ! val2.IsEmpty()) {
//ducarroz: How can I check if I am in a xul document?
rv = NS_NewGfxAutoTextControlFrame(aPresShell, &aNewFrame);
if (NS_FAILED(rv)) {
aNewFrame = nsnull;
}
else
return rv;
}
}
nsWidgetRendering mode;
aPresContext->GetWidgetRenderingMode(&mode);
if (eWidgetRendering_Gfx == mode)
{
rv = NS_NewGfxTextControlFrame(aPresShell, &aNewFrame);
if (NS_FAILED(rv)) {
aNewFrame = nsnull;
}
if (aNewFrame)
((nsGfxTextControlFrame*)aNewFrame)->SetFrameConstructor(this);
}
if (!aNewFrame)
{
NS_ASSERTION(0, "We longer support native widgets");
}
return rv;
}
PRBool
nsCSSFrameConstructor::HasGfxScrollbars(nsIPresContext* aPresContext)
{
nsCOMPtr<nsIPref> pref(do_GetService(NS_PREF_PROGID));
PRBool gfx = PR_FALSE;
if (pref) {
pref->GetBoolPref("nglayout.widget.gfxscrollbars", &gfx);
}
return gfx;
/*
nsWidgetRendering mode;
aPresContext->GetWidgetRenderingMode(&mode);
return (eWidgetRendering_Native != mode);
*/
}
nsresult
nsCSSFrameConstructor::ConstructSelectFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewFrame,
PRBool& aProcessChildren,
PRBool aIsAbsolutelyPositioned,
PRBool& aFrameHasBeenInitialized,
PRBool aIsFixedPositioned,
nsFrameItems& aFrameItems)
{
nsresult rv = NS_OK;
nsWidgetRendering mode;
aPresContext->GetWidgetRenderingMode(&mode);
const PRInt32 kNoSizeSpecified = -1;
PRBool hasGfxScrollbars = HasGfxScrollbars(aPresContext);
if (eWidgetRendering_Gfx == mode) {
// Construct a frame-based listbox or combobox
nsCOMPtr<nsIDOMHTMLSelectElement> sel(do_QueryInterface(aContent));
PRInt32 size = 1;
if (sel) {
sel->GetSize(&size);
PRBool multipleSelect = PR_FALSE;
sel->GetMultiple(&multipleSelect);
// Construct a combobox if size=1 or no size is specified and its multiple select
if (((1 == size || 0 == size) || (kNoSizeSpecified == size)) && (PR_FALSE == multipleSelect)) {
// Construct a frame-based combo box.
// The frame-based combo box is built out of tree parts. A display area, a button and
// a dropdown list. The display area and button are created through anonymous content.
// The drop-down list's frame is created explicitly. The combobox frame shares it's content
// with the drop-down list.
PRUint32 flags = NS_BLOCK_SHRINK_WRAP | (aIsAbsolutelyPositioned?NS_BLOCK_SPACE_MGR:0);
nsIFrame * comboboxFrame;
rv = NS_NewComboboxControlFrame(aPresShell, &comboboxFrame, flags);
// Determine geometric parent for the combobox frame
nsIFrame* geometricParent = aParentFrame;
if (aIsAbsolutelyPositioned) {
geometricParent = aState.mAbsoluteItems.containingBlock;
} else if (aIsFixedPositioned) {
geometricParent = aState.mFixedItems.containingBlock;
}
// Initialize the combobox frame
InitAndRestoreFrame(aPresContext, aState, aContent,
geometricParent, aStyleContext, nsnull, comboboxFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, comboboxFrame,
aStyleContext, PR_FALSE);
if (hasGfxScrollbars && gDoGfxDropdown) {
///////////////////////////////////////////////////////////////////
// Combobox - New GFX Implementation
///////////////////////////////////////////////////////////////////
// Construct a frame-based list box
nsIComboboxControlFrame* comboBox = nsnull;
if (NS_SUCCEEDED(comboboxFrame->QueryInterface(kIComboboxControlFrameIID, (void**)&comboBox))) {
comboBox->SetFrameConstructor(this);
nsIFrame * listFrame;
rv = NS_NewGfxListControlFrame(aPresShell, &listFrame);
// Notify the listbox that it is being used as a dropdown list.
nsIListControlFrame * listControlFrame;
if (NS_SUCCEEDED(listFrame->QueryInterface(kIListControlFrameIID, (void**)&listControlFrame))) {
listControlFrame->SetComboboxFrame(comboboxFrame);
}
// Notify combobox that it should use the listbox as it's popup
comboBox->SetDropDown(listFrame);
nsCOMPtr<nsIStyleContext> gfxListStyle;
aPresContext->ResolvePseudoStyleContextFor(aContent,
nsHTMLAtoms::dropDownListPseudo,
aStyleContext, PR_FALSE,
getter_AddRefs(gfxListStyle));
// initialize the list control
InitAndRestoreFrame(aPresContext, aState, aContent,
comboboxFrame, gfxListStyle, nsnull, listFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, listFrame,
gfxListStyle, PR_TRUE);
nsIView * view;
listFrame->GetView(aPresContext, &view);
if (view != nsnull) {
nsWidgetInitData widgetData;
view->SetFloating(PR_TRUE);
widgetData.mWindowType = eWindowType_popup;
widgetData.mBorderStyle = eBorderStyle_default;
#ifdef XP_MAC
static NS_DEFINE_IID(kCPopUpCID, NS_POPUP_CID);
view->CreateWidget(kCPopUpCID, &widgetData, nsnull);
#else
static NS_DEFINE_IID(kCChildCID, NS_CHILD_CID);
view->CreateWidget(kCChildCID, &widgetData, nsnull);
#endif
}
// create the area frame we are scrolling
PRUint32 flags = NS_BLOCK_SHRINK_WRAP | (aIsAbsolutelyPositioned?NS_BLOCK_SPACE_MGR:0);
nsIFrame* scrolledFrame = nsnull;
NS_NewSelectsAreaFrame(aPresShell, &scrolledFrame, flags);
// resolve a style for our gfx scrollframe based on the list frames style
// resolve a style for our gfx scrollframe based on the list frames style
nsCOMPtr<nsIStyleContext> scrollFrameStyle;
aPresContext->ResolvePseudoStyleContextFor(aContent,
nsLayoutAtoms::selectScrolledContentPseudo,
gfxListStyle, PR_FALSE,
getter_AddRefs(scrollFrameStyle));
InitAndRestoreFrame(aPresContext, aState, aContent,
listFrame, scrollFrameStyle, nsnull, scrolledFrame);
// XXX Temporary for Bug 19416
{
nsIView * lstView;
scrolledFrame->GetView(aPresContext, &lstView);
if (lstView) {
lstView->IgnoreSetPosition(PR_TRUE);
}
}
// this is what is returned when the scrollframe is created.
// newScrollFrame - Either a gfx scrollframe or a native scrollframe that was created
// scrolledFrameStyleContext - The resolved style context of the scrolledframe you passed in.
// this is not the style of the scrollFrame.
nsIFrame* newScrollFrame = nsnull;
nsFrameItems anonChildItems;
// Create display and button frames from the combobox'es anonymous content
CreateAnonymousFrames(aPresShell, aPresContext, nsHTMLAtoms::combobox, aState, aContent, comboboxFrame,
anonChildItems);
comboboxFrame->SetInitialChildList(aPresContext, nsnull,
anonChildItems.childList);
/* scroll frame */
#ifdef NEWGFX_LIST_SCROLLFRAME
nsIStyleContext * scrolledFrameStyleContext = nsnull;
// ok take the style context, the Select area frame to scroll,the listFrame, and its parent
// and build the scrollframe.
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, scrollFrameStyle, scrolledFrame,
listFrame, newScrollFrame, scrolledFrameStyleContext);
#else
newScrollFrame = scrolledFrame;
#endif
// The area frame is a floater container
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
nsFrameConstructorSaveState floaterSaveState;
aState.PushFloaterContainingBlock(scrolledFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
// Process children
nsFrameItems childItems;
ProcessChildren(aPresShell, aPresContext, aState, aContent, scrolledFrame, PR_FALSE,
childItems, PR_TRUE);
// if a select is being created with zero options we need to create
// a special pseudo frame so it can be sized as best it can
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement;
nsresult result = aContent->QueryInterface(NS_GET_IID(nsIDOMHTMLSelectElement),
(void**)getter_AddRefs(selectElement));
if (NS_SUCCEEDED(result) && selectElement) {
PRUint32 numOptions = 0;
result = selectElement->GetLength(&numOptions);
if (NS_SUCCEEDED(result) && 0 == numOptions) {
nsCOMPtr<nsIStyleContext> styleContext;
nsIFrame* generatedFrame = nsnull;
scrolledFrame->GetStyleContext(getter_AddRefs(styleContext));
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, scrolledFrame, aContent,
styleContext, nsLayoutAtoms::dummyOptionPseudo,
PR_FALSE, &generatedFrame)) {
// Add the generated frame to the child list
childItems.AddChild(generatedFrame);
}
}
}
// Set the scrolled frame's initial child lists
scrolledFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
// set the floated list
if (aState.mFloatedItems.childList) {
scrolledFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
// now we need to set the initial child list of the listFrame and this of course will be the gfx scrollframe
listFrame->SetInitialChildList(aPresContext, nsnull, newScrollFrame);
// Initialize the additional popup child list which contains the dropdown list frame.
nsFrameItems popupItems;
popupItems.AddChild(listFrame);
comboboxFrame->SetInitialChildList(aPresContext, nsLayoutAtoms::popupList,
popupItems.childList);
// our new frame retured is the top frame which is the list frame.
//aNewFrame = listFrame;
// yes we have already initialized our frame
// Don't process, the children, They are already processed by the InitializeScrollFrame
// call above.
aProcessChildren = PR_FALSE;
aNewFrame = comboboxFrame;
aFrameHasBeenInitialized = PR_TRUE;
}
} else {
///////////////////////////////////////////////////////////////////
// Combobox - Old Native Implementation
///////////////////////////////////////////////////////////////////
nsIComboboxControlFrame* comboBox = nsnull;
if (NS_SUCCEEDED(comboboxFrame->QueryInterface(kIComboboxControlFrameIID, (void**)&comboBox))) {
comboBox->SetFrameConstructor(this);
// Create a listbox
nsIFrame * listFrame;
rv = NS_NewListControlFrame(aPresShell, &listFrame);
// Notify the listbox that it is being used as a dropdown list.
nsIListControlFrame * listControlFrame;
if (NS_SUCCEEDED(listFrame->QueryInterface(kIListControlFrameIID, (void**)&listControlFrame))) {
listControlFrame->SetComboboxFrame(comboboxFrame);
}
// Notify combobox that it should use the listbox as it's popup
comboBox->SetDropDown(listFrame);
// Resolve psuedo element style for the dropdown list
nsCOMPtr<nsIStyleContext> listStyle;
rv = aPresContext->ResolvePseudoStyleContextFor(aContent,
nsHTMLAtoms::dropDownListPseudo,
aStyleContext,
PR_FALSE,
getter_AddRefs(listStyle));
// Initialize the scroll frame positioned. Note that it is NOT initialized as
// absolutely positioned.
nsIFrame* newFrame = nsnull;
nsIFrame* scrolledFrame = nsnull;
NS_NewSelectsAreaFrame(aPresShell, &scrolledFrame, flags);
InitializeSelectFrame(aPresShell, aPresContext, aState, listFrame, scrolledFrame, aContent, comboboxFrame,
listStyle, PR_FALSE, PR_FALSE, PR_TRUE);
newFrame = listFrame;
// XXX Temporary for Bug 19416
{
nsIView * lstView;
scrolledFrame->GetView(aPresContext, &lstView);
if (lstView) {
lstView->IgnoreSetPosition(PR_TRUE);
}
}
// Set flag so the events go to the listFrame not child frames.
// XXX: We should replace this with a real widget manager similar
// to how the nsFormControlFrame works. Re-directing events is a temporary Kludge.
nsIView *listView;
listFrame->GetView(aPresContext, &listView);
NS_ASSERTION(nsnull != listView,"ListFrame's view is nsnull");
nsIWidget * viewWidget;
listView->GetWidget(viewWidget);
//viewWidget->SetOverrideShow(PR_TRUE);
NS_RELEASE(viewWidget);
//listView->SetViewFlags(NS_VIEW_PUBLIC_FLAG_DONT_CHECK_CHILDREN);
nsIFrame* frame = nsnull;
if (NS_SUCCEEDED(comboboxFrame->QueryInterface(kIFrameIID, (void**)&frame))) {
nsFrameItems childItems;
// Create display and button frames from the combobox'es anonymous content
CreateAnonymousFrames(aPresShell, aPresContext, nsHTMLAtoms::combobox, aState, aContent, frame,
childItems);
frame->SetInitialChildList(aPresContext, nsnull,
childItems.childList);
// Initialize the additional popup child list which contains the dropdown list frame.
nsFrameItems popupItems;
popupItems.AddChild(listFrame);
frame->SetInitialChildList(aPresContext, nsLayoutAtoms::popupList,
popupItems.childList);
}
// Don't process, the children, They are already processed by the InitializeScrollFrame
// call above.
aProcessChildren = PR_FALSE;
aNewFrame = comboboxFrame;
aFrameHasBeenInitialized = PR_TRUE;
}
}
} else if (hasGfxScrollbars && gDoGfxListbox) {
///////////////////////////////////////////////////////////////////
// ListBox - New GFX Implementation
///////////////////////////////////////////////////////////////////
// Construct a frame-based list box
nsIFrame * listFrame;
rv = NS_NewGfxListControlFrame(aPresShell, &listFrame);
// initialize the list control
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, listFrame);
// create the area frame we are scrolling
PRUint32 flags = NS_BLOCK_SHRINK_WRAP | (aIsAbsolutelyPositioned?NS_BLOCK_SPACE_MGR:0);
nsIFrame* scrolledFrame = nsnull;
NS_NewSelectsAreaFrame(aPresShell, &scrolledFrame, flags);
// resolve a style for our gfx scrollframe based on the list frames style
nsCOMPtr<nsIStyleContext> scrollFrameStyle;
aPresContext->ResolvePseudoStyleContextFor(aContent,
nsLayoutAtoms::selectScrolledContentPseudo,
aStyleContext, PR_FALSE,
getter_AddRefs(scrollFrameStyle));
InitAndRestoreFrame(aPresContext, aState, aContent,
listFrame, scrollFrameStyle, nsnull, scrolledFrame);
// this is what is returned when the scrollframe is created.
// newScrollFrame - Either a gfx scrollframe or a native scrollframe that was created
// scrolledFrameStyleContext - The resolved style context of the scrolledframe you passed in.
// this is not the style of the scrollFrame.
nsIFrame* newScrollFrame = nsnull;
/* scroll frame */
#ifdef NEWGFX_LIST_SCROLLFRAME
nsIStyleContext * scrolledFrameStyleContext = nsnull;
// ok take the style context, the Select area frame to scroll,the listFrame, and its parent
// and build the scrollframe.
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, scrollFrameStyle, scrolledFrame,
listFrame, newScrollFrame, scrolledFrameStyleContext);
#else
newScrollFrame = scrolledFrame;
#endif
// The area frame is a floater container
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
nsFrameConstructorSaveState floaterSaveState;
aState.PushFloaterContainingBlock(scrolledFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
// Process children
nsFrameItems childItems;
ProcessChildren(aPresShell, aPresContext, aState, aContent, scrolledFrame, PR_FALSE,
childItems, PR_TRUE);
// if a select is being created with zero options we need to create
// a special pseudo frame so it can be sized as best it can
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement;
nsresult result = aContent->QueryInterface(NS_GET_IID(nsIDOMHTMLSelectElement),
(void**)getter_AddRefs(selectElement));
if (NS_SUCCEEDED(result) && selectElement) {
PRUint32 numOptions = 0;
result = selectElement->GetLength(&numOptions);
if (NS_SUCCEEDED(result) && 0 == numOptions) {
nsCOMPtr<nsIStyleContext> styleContext;
nsIFrame* generatedFrame = nsnull;
scrolledFrame->GetStyleContext(getter_AddRefs(styleContext));
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, scrolledFrame, aContent,
styleContext, nsLayoutAtoms::dummyOptionPseudo,
PR_FALSE, &generatedFrame)) {
// Add the generated frame to the child list
childItems.AddChild(generatedFrame);
}
}
}
// Set the scrolled frame's initial child lists
scrolledFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
// set the floated list
if (aState.mFloatedItems.childList) {
scrolledFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
// now we need to set the initial child list of the listFrame and this of course will be the gfx scrollframe
listFrame->SetInitialChildList(aPresContext, nsnull, newScrollFrame);
// our new frame retured is the top frame which is the list frame.
aNewFrame = listFrame;
// yes we have already initialized our frame
aFrameHasBeenInitialized = PR_TRUE;
} else {
///////////////////////////////////////////////////////////////////
// ListBox - Old Native Implementation
///////////////////////////////////////////////////////////////////
nsIFrame * listFrame;
rv = NS_NewListControlFrame(aPresShell, &listFrame);
aNewFrame = listFrame;
PRUint32 flags = NS_BLOCK_SHRINK_WRAP | (aIsAbsolutelyPositioned?NS_BLOCK_SPACE_MGR:0);
nsIFrame* scrolledFrame = nsnull;
NS_NewSelectsAreaFrame(aPresShell, &scrolledFrame, flags);
// ******* this code stolen from Initialze ScrollFrame ********
// please adjust this code to use BuildScrollFrame.
InitializeSelectFrame(aPresShell, aPresContext, aState, listFrame, scrolledFrame, aContent, aParentFrame,
aStyleContext, aIsAbsolutelyPositioned, aIsFixedPositioned, PR_FALSE);
aNewFrame = listFrame;
// Set flag so the events go to the listFrame not child frames.
// XXX: We should replace this with a real widget manager similar
// to how the nsFormControlFrame works.
// Re-directing events is a temporary Kludge.
nsIView *listView;
listFrame->GetView(aPresContext, &listView);
NS_ASSERTION(nsnull != listView,"ListFrame's view is nsnull");
//listView->SetViewFlags(NS_VIEW_PUBLIC_FLAG_DONT_CHECK_CHILDREN);
aFrameHasBeenInitialized = PR_TRUE;
}
} else {
NS_ASSERTION(0, "We longer support native widgets");
}
}
else {
// Not frame based. Use a SelectFrame which creates a native widget.
NS_ASSERTION(0, "We longer support native widgets");
}
return rv;
}
/**
* Used to be InitializeScrollFrame but now its only used for the select tag
* But the select tag should really be fixed to use GFX scrollbars that can
* be create with BuildScrollFrame.
*/
nsresult
nsCSSFrameConstructor::InitializeSelectFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIFrame* scrollFrame,
nsIFrame* scrolledFrame,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
PRBool aIsAbsolutelyPositioned,
PRBool aIsFixedPositioned,
PRBool aCreateBlock)
{
// Initialize it
nsIFrame* geometricParent = aParentFrame;
if (aIsAbsolutelyPositioned) {
geometricParent = aState.mAbsoluteItems.containingBlock;
} else if (aIsFixedPositioned) {
geometricParent = aState.mFixedItems.containingBlock;
}
nsCOMPtr<nsIStyleContext> scrollPseudoStyle;
nsCOMPtr<nsIStyleContext> scrolledPseudoStyle;
aPresContext->ResolvePseudoStyleContextFor(aContent,
nsLayoutAtoms::scrolledContentPseudo,
aStyleContext, PR_FALSE,
getter_AddRefs(scrolledPseudoStyle));
InitAndRestoreFrame(aPresContext, aState, aContent,
geometricParent, aStyleContext, nsnull, scrollFrame);
// Initialize the frame and force it to have a view
// the scrolled frame is anonymous and does not have a content node
InitAndRestoreFrame(aPresContext, aState, aContent,
scrollFrame, scrolledPseudoStyle, nsnull, scrolledFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, scrolledFrame,
scrolledPseudoStyle, PR_TRUE);
// The area frame is a floater container
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
nsFrameConstructorSaveState floaterSaveState;
aState.PushFloaterContainingBlock(scrolledFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
// Process children
nsFrameConstructorSaveState absoluteSaveState;
nsFrameItems childItems;
PRBool isPositionedContainingBlock = aIsAbsolutelyPositioned ||
aIsFixedPositioned;
if (isPositionedContainingBlock) {
// The area frame becomes a container for child frames that are
// absolutely positioned
aState.PushAbsoluteContainingBlock(scrolledFrame, absoluteSaveState);
}
ProcessChildren(aPresShell, aPresContext, aState, aContent, scrolledFrame, PR_FALSE,
childItems, PR_TRUE);
// if a select is being created with zero options we need to create
// a special pseudo frame so it can be sized as best it can
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement;
nsresult result = aContent->QueryInterface(NS_GET_IID(nsIDOMHTMLSelectElement),
(void**)getter_AddRefs(selectElement));
if (NS_SUCCEEDED(result) && selectElement) {
PRUint32 numOptions = 0;
result = selectElement->GetLength(&numOptions);
if (NS_SUCCEEDED(result) && 0 == numOptions) {
nsCOMPtr<nsIStyleContext> styleContext;
nsIFrame* generatedFrame = nsnull;
scrolledFrame->GetStyleContext(getter_AddRefs(styleContext));
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, scrolledFrame, aContent,
styleContext, nsLayoutAtoms::dummyOptionPseudo,
PR_FALSE, &generatedFrame)) {
// Add the generated frame to the child list
childItems.AddChild(generatedFrame);
}
}
}
//////////////////////////////////////////////////
//////////////////////////////////////////////////
// Set the scrolled frame's initial child lists
scrolledFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (isPositionedContainingBlock && aState.mAbsoluteItems.childList) {
scrolledFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::absoluteList,
aState.mAbsoluteItems.childList);
}
if (aState.mFloatedItems.childList) {
scrolledFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
// Set the scroll frame's initial child list
scrollFrame->SetInitialChildList(aPresContext, nsnull, scrolledFrame);
return NS_OK;
}
/**
* Used to be InitializeScrollFrame but now its only used for the select tag
* But the select tag should really be fixed to use GFX scrollbars that can
* be create with BuildScrollFrame.
*/
nsresult
nsCSSFrameConstructor::ConstructTitledBoxFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewFrame)
{
nsIFrame * newFrame;
nsresult rv = NS_NewTitledBoxFrame(aPresShell, &newFrame);
if (!NS_SUCCEEDED(rv)) {
return rv;
}
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
// Initialize it
nsIFrame* geometricParent = aParentFrame;
InitAndRestoreFrame(aPresContext, aState, aContent,
geometricParent, aStyleContext, nsnull, newFrame);
// cache our display type
const nsStyleDisplay* styleDisplay;
newFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&) styleDisplay);
nsIFrame * boxFrame;
NS_NewTitledBoxInnerFrame(shell, &boxFrame);
// Resolve style and initialize the frame
nsIStyleContext* styleContext;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsXULAtoms::titledboxContentPseudo,
aStyleContext, PR_FALSE, &styleContext);
InitAndRestoreFrame(aPresContext, aState, nsnull,
newFrame, styleContext, nsnull, boxFrame);
NS_RELEASE(styleContext);
nsFrameItems childItems;
ProcessChildren(aPresShell, aPresContext, aState, aContent, boxFrame, PR_FALSE,
childItems, PR_TRUE);
static NS_DEFINE_IID(kTitleFrameCID, NS_TITLE_FRAME_CID);
nsIFrame * child = childItems.childList;
nsIFrame * previous = nsnull;
nsIFrame* titleFrame = nsnull;
while (nsnull != child) {
nsresult result = child->QueryInterface(kTitleFrameCID, (void**)&titleFrame);
if (NS_SUCCEEDED(result) && titleFrame) {
if (nsnull != previous) {
nsIFrame * nxt;
titleFrame->GetNextSibling(&nxt);
previous->SetNextSibling(nxt);
titleFrame->SetNextSibling(boxFrame);
break;
} else {
nsIFrame * nxt;
titleFrame->GetNextSibling(&nxt);
childItems.childList = nxt;
titleFrame->SetNextSibling(boxFrame);
break;
}
}
previous = child;
child->GetNextSibling(&child);
}
// Set the scrolled frame's initial child lists
boxFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (titleFrame)
newFrame->SetInitialChildList(aPresContext, nsnull, titleFrame);
else
newFrame->SetInitialChildList(aPresContext, nsnull, boxFrame);
// our new frame retured is the top frame which is the list frame.
aNewFrame = newFrame;
return NS_OK;
}
/**
* Used to be InitializeScrollFrame but now its only used for the select tag
* But the select tag should really be fixed to use GFX scrollbars that can
* be create with BuildScrollFrame.
*/
nsresult
nsCSSFrameConstructor::ConstructFieldSetFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewFrame,
PRBool& aProcessChildren,
PRBool aIsAbsolutelyPositioned,
PRBool& aFrameHasBeenInitialized,
PRBool aIsFixedPositioned)
{
nsIFrame * newFrame;
PRUint32 flags = aIsAbsolutelyPositioned ? NS_BLOCK_SPACE_MGR : 0;
nsresult rv = NS_NewFieldSetFrame(aPresShell, &newFrame, flags);
if (!NS_SUCCEEDED(rv)) {
return rv;
}
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
// Initialize it
nsIFrame* geometricParent = aParentFrame;
if (aIsAbsolutelyPositioned) {
geometricParent = aState.mAbsoluteItems.containingBlock;
} else if (aIsFixedPositioned) {
geometricParent = aState.mFixedItems.containingBlock;
}
InitAndRestoreFrame(aPresContext, aState, aContent,
geometricParent, aStyleContext, nsnull, newFrame);
// See if we need to create a view, e.g. the frame is absolutely
// positioned
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
aStyleContext, PR_FALSE);
// cache our display type
const nsStyleDisplay* styleDisplay;
newFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&) styleDisplay);
/*
PRUint32 childFlags = (NS_STYLE_DISPLAY_BLOCK != styleDisplay->mDisplay) ? NS_BLOCK_SHRINK_WRAP : 0;
// inherit the FieldSet state
PRUint32 parentState;
newFrame->GetFrameState( &parentState );
childFlags |= parentState;
childFlags |= NS_BLOCK_SHRINK_WRAP;
*/
nsIFrame * areaFrame;
// NS_NewAreaFrame(shell, &areaFrame, childFlags);
NS_NewBlockFrame(shell, &areaFrame);
// Resolve style and initialize the frame
nsIStyleContext* styleContext;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::fieldsetContentPseudo,
aStyleContext, PR_FALSE, &styleContext);
InitAndRestoreFrame(aPresContext, aState, aContent,
newFrame, styleContext, nsnull, areaFrame);
NS_RELEASE(styleContext);
// The area frame is a floater container
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
nsFrameConstructorSaveState floaterSaveState;
aState.PushFloaterContainingBlock(areaFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
// Process children
nsFrameConstructorSaveState absoluteSaveState;
nsFrameItems childItems;
PRBool isPositionedContainingBlock = aIsAbsolutelyPositioned ||
aIsFixedPositioned;
if (isPositionedContainingBlock) {
// The area frame becomes a container for child frames that are
// absolutely positioned
aState.PushAbsoluteContainingBlock(areaFrame, absoluteSaveState);
}
ProcessChildren(aPresShell, aPresContext, aState, aContent, areaFrame, PR_FALSE,
childItems, PR_TRUE);
static NS_DEFINE_IID(kLegendFrameCID, NS_LEGEND_FRAME_CID);
nsIFrame * child = childItems.childList;
nsIFrame * previous = nsnull;
nsIFrame* legendFrame = nsnull;
while (nsnull != child) {
nsresult result = child->QueryInterface(kLegendFrameCID, (void**)&legendFrame);
if (NS_SUCCEEDED(result) && legendFrame) {
if (nsnull != previous) {
nsIFrame * nxt;
legendFrame->GetNextSibling(&nxt);
previous->SetNextSibling(nxt);
areaFrame->SetNextSibling(legendFrame);
legendFrame->SetParent(newFrame);
legendFrame->SetNextSibling(nsnull);
break;
} else {
nsIFrame * nxt;
legendFrame->GetNextSibling(&nxt);
childItems.childList = nxt;
areaFrame->SetNextSibling(legendFrame);
legendFrame->SetParent(newFrame);
legendFrame->SetNextSibling(nsnull);
break;
}
}
child->GetNextSibling(&child);
}
// Set the scrolled frame's initial child lists
areaFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (isPositionedContainingBlock && aState.mAbsoluteItems.childList) {
areaFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::absoluteList,
aState.mAbsoluteItems.childList);
}
if (aState.mFloatedItems.childList) {
areaFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
// Set the scroll frame's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, areaFrame);
// our new frame retured is the top frame which is the list frame.
aNewFrame = newFrame;
// yes we have already initialized our frame
aFrameHasBeenInitialized = PR_TRUE;
return NS_OK;
#if 0
nsIFrame* newChildList = aChildList;
// Set the geometric and content parent for each of the child frames
// that will go into the area frame's child list.
// The legend frame does not go into the list
nsIFrame* lastNewFrame = nsnull;
for (nsIFrame* frame = aChildList; nsnull != frame;) {
nsIFrame* legendFrame = nsnull;
nsresult result = frame->QueryInterface(kLegendFrameCID, (void**)&legendFrame);
if (NS_SUCCEEDED(result) && legendFrame) {
if (mLegendFrame) { // we already have a legend, destroy it
frame->GetNextSibling(&frame);
if (lastNewFrame) {
lastNewFrame->SetNextSibling(frame);
}
else {
aChildList = frame;
}
legendFrame->Destroy(aPresContext);
}
else {
nsIFrame* nextFrame;
frame->GetNextSibling(&nextFrame);
if (lastNewFrame) {
lastNewFrame->SetNextSibling(nextFrame);
} else {
newChildList = nextFrame;
}
frame->SetParent(this);
mFrames.FirstChild()->SetNextSibling(frame);
mLegendFrame = frame;
mLegendFrame->SetNextSibling(nsnull);
frame = nextFrame;
}
} else {
frame->SetParent(mFrames.FirstChild());
lastNewFrame = frame;
frame->GetNextSibling(&frame);
}
}
// Queue up the frames for the content frame
return mFrames.FirstChild()->SetInitialChildList(aPresContext, nsnull, newChildList);
#endif
}
nsresult
nsCSSFrameConstructor::ConstructFrameByTag(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
nsIStyleContext* aStyleContext,
nsFrameItems& aFrameItems)
{
PRBool processChildren = PR_FALSE; // whether we should process child content
PRBool isAbsolutelyPositioned = PR_FALSE;
PRBool isFixedPositioned = PR_FALSE;
PRBool isFloating = PR_FALSE;
PRBool canBePositioned = PR_TRUE;
PRBool frameHasBeenInitialized = PR_FALSE;
nsIFrame* newFrame = nsnull; // the frame we construct
PRBool isReplaced = PR_FALSE;
PRBool addToHashTable = PR_TRUE;
nsresult rv = NS_OK;
if (nsLayoutAtoms::textTagName == aTag) {
rv = NS_NewTextFrame(aPresShell, &newFrame);
// Text frames don't go in the content->frame hash table, because
// they're anonymous. This keeps the hash table smaller
addToHashTable = PR_FALSE;
isReplaced = PR_TRUE; // XXX kipp: temporary
}
else {
nsIHTMLContent *htmlContent;
// Ignore the tag if it's not HTML content
if (NS_SUCCEEDED(aContent->QueryInterface(kIHTMLContentIID, (void **)&htmlContent))) {
NS_RELEASE(htmlContent);
// See if the element is absolute or fixed positioned
const nsStylePosition* position = (const nsStylePosition*)
aStyleContext->GetStyleData(eStyleStruct_Position);
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition) {
isAbsolutelyPositioned = PR_TRUE;
}
else if (NS_STYLE_POSITION_FIXED == position->mPosition) {
isFixedPositioned = PR_TRUE;
}
else if (NS_STYLE_FLOAT_NONE != display->mFloats) {
isFloating = PR_TRUE;
}
// Create a frame based on the tag
if (nsHTMLAtoms::img == aTag) {
isReplaced = PR_TRUE;
// XXX If image display is turned off, then use ConstructAlternateImageFrame()
// instead...
rv = NS_NewImageFrame(aPresShell, &newFrame);
}
else if (nsHTMLAtoms::hr == aTag) {
rv = NS_NewHRFrame(aPresShell, &newFrame);
}
else if (nsHTMLAtoms::br == aTag) {
rv = NS_NewBRFrame(aPresShell, &newFrame);
isReplaced = PR_TRUE;
// BR frames don't go in the content->frame hash table: typically
// there are many BR content objects and this would increase the size
// of the hash table, and it's doubtful we need the mapping anyway
addToHashTable = PR_FALSE;
}
else if (nsHTMLAtoms::wbr == aTag) {
rv = NS_NewWBRFrame(aPresShell, &newFrame);
}
else if (nsHTMLAtoms::input == aTag) {
isReplaced = PR_TRUE;
rv = CreateInputFrame(aPresShell, aPresContext, aContent, newFrame, aStyleContext);
}
else if (nsHTMLAtoms::textarea == aTag) {
isReplaced = PR_TRUE;
rv = ConstructTextControlFrame(aPresShell, aPresContext, newFrame, aContent);
}
else if (nsHTMLAtoms::select == aTag) {
isReplaced = PR_TRUE;
rv = ConstructSelectFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
aTag, aStyleContext, newFrame, processChildren,
isAbsolutelyPositioned, frameHasBeenInitialized,
isFixedPositioned, aFrameItems);
}
else if (nsHTMLAtoms::applet == aTag) {
isReplaced = PR_TRUE;
rv = NS_NewObjectFrame(aPresShell, &newFrame);
}
else if (nsHTMLAtoms::embed == aTag) {
rv = NS_NewObjectFrame(aPresShell, &newFrame);
}
else if (nsHTMLAtoms::fieldset == aTag) {
#define DO_NEWFIELDSET
#ifdef DO_NEWFIELDSET
rv = ConstructFieldSetFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
aTag, aStyleContext, newFrame, processChildren,
isAbsolutelyPositioned, frameHasBeenInitialized,
isFixedPositioned);
processChildren = PR_FALSE;
#else
rv = NS_NewFieldSetFrame(aPresShell, &newFrame, isAbsolutelyPositioned ? NS_BLOCK_SPACE_MGR : 0);
processChildren = PR_TRUE;
#endif
}
else if (nsHTMLAtoms::legend == aTag) {
rv = NS_NewLegendFrame(aPresShell, &newFrame);
processChildren = PR_TRUE;
canBePositioned = PR_FALSE;
}
else if (nsHTMLAtoms::object == aTag) {
isReplaced = PR_TRUE;
rv = NS_NewObjectFrame(aPresShell, &newFrame);
}
else if (nsHTMLAtoms::form == aTag) {
PRBool isOutOfFlow = isFloating || isAbsolutelyPositioned || isFixedPositioned;
rv = NS_NewFormFrame(aPresShell, &newFrame,
isOutOfFlow ? NS_BLOCK_SPACE_MGR|NS_BLOCK_MARGIN_ROOT : 0);
processChildren = PR_TRUE;
}
else if (nsHTMLAtoms::frameset == aTag) {
rv = NS_NewHTMLFramesetFrame(aPresShell, &newFrame);
canBePositioned = PR_FALSE;
}
else if (nsHTMLAtoms::iframe == aTag) {
isReplaced = PR_TRUE;
rv = NS_NewHTMLFrameOuterFrame(aPresShell, &newFrame);
}
else if (nsHTMLAtoms::spacer == aTag) {
rv = NS_NewSpacerFrame(aPresShell, &newFrame);
canBePositioned = PR_FALSE;
}
else if (nsHTMLAtoms::button == aTag) {
rv = NS_NewHTMLButtonControlFrame(aPresShell, &newFrame);
// the html4 button needs to act just like a
// regular button except contain html content
// so it must be replaced or html outside it will
// draw into its borders. -EDV
isReplaced = PR_TRUE;
processChildren = PR_TRUE;
}
else if (nsHTMLAtoms::label == aTag) {
rv = NS_NewLabelFrame(aPresShell, &newFrame);
processChildren = PR_TRUE;
}
}
}
// If we succeeded in creating a frame then initialize it, process its
// children (if requested), and set the initial child list
if (NS_SUCCEEDED(rv) && (nsnull != newFrame)) {
// If the frame is a replaced element, then set the frame state bit
if (isReplaced) {
nsFrameState state;
newFrame->GetFrameState(&state);
newFrame->SetFrameState(state | NS_FRAME_REPLACED_ELEMENT);
}
if (!frameHasBeenInitialized) {
nsIFrame* geometricParent = aParentFrame;
// Makes sure we use the correct parent frame pointer when initializing
// the frame
if (isFloating) {
geometricParent = aState.mFloatedItems.containingBlock;
} else if (canBePositioned) {
if (isAbsolutelyPositioned) {
geometricParent = aState.mAbsoluteItems.containingBlock;
} else if (isFixedPositioned) {
geometricParent = aState.mFixedItems.containingBlock;
}
}
InitAndRestoreFrame(aPresContext, aState, aContent,
geometricParent, aStyleContext, nsnull, newFrame);
// See if we need to create a view, e.g. the frame is absolutely
// positioned
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
aStyleContext, PR_FALSE);
// Process the child content if requested
nsFrameItems childItems;
if (processChildren) {
rv = ProcessChildren(aPresShell, aPresContext, aState, aContent, newFrame,
PR_TRUE, childItems, PR_FALSE);
}
// if there are any anonymous children create frames for them
CreateAnonymousFrames(aPresShell, aPresContext, aTag, aState, aContent, newFrame,
childItems);
// Set the frame's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
}
// If the frame is positioned, then create a placeholder frame
if (canBePositioned && (isAbsolutelyPositioned || isFixedPositioned)) {
nsIFrame* placeholderFrame;
CreatePlaceholderFrameFor(aPresShell, aPresContext, aState.mFrameManager, aContent,
newFrame, aStyleContext, aParentFrame, &placeholderFrame);
// Add the positioned frame to its containing block's list of
// child frames
if (isAbsolutelyPositioned) {
aState.mAbsoluteItems.AddChild(newFrame);
} else {
aState.mFixedItems.AddChild(newFrame);
}
// Add the placeholder frame to the flow
aFrameItems.AddChild(placeholderFrame);
} else if (isFloating) {
nsIFrame* placeholderFrame;
CreatePlaceholderFrameFor(aPresShell, aPresContext, aState.mFrameManager, aContent, newFrame,
aStyleContext, aParentFrame, &placeholderFrame);
// Add the floating frame to its containing block's list of child frames
aState.mFloatedItems.AddChild(newFrame);
// Add the placeholder frame to the flow
aFrameItems.AddChild(placeholderFrame);
} else {
// Add the newly constructed frame to the flow
aFrameItems.AddChild(newFrame);
}
if (addToHashTable) {
// Add a mapping from content object to primary frame. Note that for
// floated and positioned frames this is the out-of-flow frame and not
// the placeholder frame
aState.mFrameManager->SetPrimaryFrameFor(aContent, newFrame);
}
}
return rv;
}
// after the node has been constructed and initialized create any
// anonymous content a node needs.
nsresult
nsCSSFrameConstructor::CreateAnonymousFrames(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIAtom* aTag,
nsFrameConstructorState& aState,
nsIContent* aParent,
nsIFrame* aNewFrame,
nsFrameItems& aChildItems)
{
if (aTag == nsXULAtoms::treecell)
return NS_OK; // Don't even allow the XBL check. The inner cell frame throws it off.
// There's a separate special method for XBL treecells.
nsCOMPtr<nsIStyleContext> styleContext;
aNewFrame->GetStyleContext(getter_AddRefs(styleContext));
const nsStyleUserInterface* ui= (const nsStyleUserInterface*)
styleContext->GetStyleData(eStyleStruct_UserInterface);
if (ui->mBehavior != "") {
// Get the XBL loader.
nsresult rv;
NS_WITH_SERVICE(nsIXBLService, xblService, "component://netscape/xbl", &rv);
if (!xblService)
return rv;
// Load the bindings.
xblService->LoadBindings(aParent, ui->mBehavior);
// Retrieve the anonymous content that we should build.
nsCOMPtr<nsISupportsArray> anonymousItems;
nsCOMPtr<nsIContent> childElement;
xblService->GetContentList(aParent, getter_AddRefs(anonymousItems), getter_AddRefs(childElement));
if (!anonymousItems)
return NS_OK;
// Build the frames for the anonymous content.
PRUint32 count = 0;
anonymousItems->Count(&count);
for (PRUint32 i=0; i < count; i++)
{
// get our child's content and set its parent to our content
nsCOMPtr<nsISupports> node;
anonymousItems->GetElementAt(i,getter_AddRefs(node));
nsCOMPtr<nsIContent> content(do_QueryInterface(node));
// create the frame and attach it to our frame
ConstructFrame(aPresShell, aPresContext, aState, content, aNewFrame, aChildItems);
}
return NS_OK;
}
// only these tags types can have anonymous content. We do this check for performance
// reasons. If we did a query interface on every tag it would be very inefficient.
if (aTag != nsHTMLAtoms::input &&
aTag != nsHTMLAtoms::combobox &&
aTag != nsXULAtoms::slider &&
aTag != nsXULAtoms::splitter &&
aTag != nsXULAtoms::scrollbar &&
aTag != nsXULAtoms::menu &&
aTag != nsXULAtoms::menuitem
) {
return NS_OK;
}
// get the document
nsCOMPtr<nsIDocument> doc;
nsresult rv = aParent->GetDocument(*getter_AddRefs(doc));
if (NS_FAILED(rv) || !doc)
return rv;
return CreateAnonymousFrames(aPresShell, aPresContext, aState, aParent, doc, aNewFrame, aChildItems);
}
// after the node has been constructed and initialized create any
// anonymous content a node needs.
nsresult
nsCSSFrameConstructor::CreateAnonymousFrames(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aParent,
nsIDocument* aDocument,
nsIFrame* aNewFrame,
nsFrameItems& aChildItems)
{
nsCOMPtr<nsIAnonymousContentCreator> creator(do_QueryInterface(aNewFrame));
if (!creator)
return NS_OK;
nsCOMPtr<nsISupportsArray> anonymousItems;
NS_NewISupportsArray(getter_AddRefs(anonymousItems));
creator->CreateAnonymousContent(aPresContext, *anonymousItems);
PRUint32 count = 0;
anonymousItems->Count(&count);
for (PRUint32 i=0; i < count; i++)
{
// get our child's content and set its parent to our content
nsCOMPtr<nsISupports> node;
anonymousItems->GetElementAt(i,getter_AddRefs(node));
nsCOMPtr<nsIContent> content(do_QueryInterface(node));
content->SetParent(aParent);
content->SetDocument(aDocument, PR_TRUE);
// create the frame and attach it to our frame
ConstructFrame(aPresShell, aPresContext, aState, content, aNewFrame, aChildItems);
}
return NS_OK;
}
// after the node has been constructed and initialized create any
// anonymous content a node needs.
nsresult
nsCSSFrameConstructor::CreateAnonymousTreeCellFrames(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIAtom* aTag,
nsFrameConstructorState& aState,
nsIContent* aParent,
nsIFrame* aNewFrame,
nsIFrame* aNewCellFrame,
nsFrameItems& aChildItems)
{
nsCOMPtr<nsIStyleContext> styleContext;
aNewCellFrame->GetStyleContext(getter_AddRefs(styleContext));
const nsStyleUserInterface* ui= (const nsStyleUserInterface*)
styleContext->GetStyleData(eStyleStruct_UserInterface);
if (ui->mBehavior != "") {
// Get the XBL loader.
nsresult rv;
NS_WITH_SERVICE(nsIXBLService, xblService, "component://netscape/xbl", &rv);
if (!xblService)
return rv;
// Load the bindings.
xblService->LoadBindings(aParent, ui->mBehavior);
// Retrieve the anonymous content that we should build.
nsCOMPtr<nsIContent> childElement;
nsCOMPtr<nsISupportsArray> anonymousItems;
xblService->GetContentList(aParent, getter_AddRefs(anonymousItems), getter_AddRefs(childElement));
if (!anonymousItems)
return NS_OK;
// Build the frames for the anonymous content.
PRUint32 count = 0;
anonymousItems->Count(&count);
for (PRUint32 i=0; i < count; i++)
{
// get our child's content and set its parent to our content
nsCOMPtr<nsISupports> node;
anonymousItems->GetElementAt(i,getter_AddRefs(node));
nsCOMPtr<nsIContent> content(do_QueryInterface(node));
// create the frame and attach it to our frame
ConstructFrame(aPresShell, aPresContext, aState, content, aNewFrame, aChildItems);
}
return NS_OK;
}
return NS_OK;
}
#ifdef INCLUDE_XUL
nsresult
nsCSSFrameConstructor::ConstructXULFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
nsIStyleContext* aStyleContext,
nsFrameItems& aFrameItems,
PRBool aXBLBaseTag,
PRBool& aHaltProcessing)
{
PRBool primaryFrameSet = PR_FALSE;
PRBool processChildren = PR_FALSE; // whether we should process child content
nsresult rv = NS_OK;
PRBool isAbsolutelyPositioned = PR_FALSE;
PRBool isFixedPositioned = PR_FALSE;
PRBool isReplaced = PR_FALSE;
PRBool frameHasBeenInitialized = PR_FALSE;
// this is the new frame that will be created
nsIFrame* newFrame = nsnull;
// this is the also the new frame that is created. But if a scroll frame is needed
// the content will be mapped to the scrollframe and topFrame will point to it.
// newFrame will still point to the child that we created like a "div" for example.
nsIFrame* topFrame = nsnull;
nsIFrame* ignore = nsnull; // I have no idea what this is used for.
nsTreeCreator treeCreator(aPresShell); // Used to make tree views.
NS_ASSERTION(aTag != nsnull, "null XUL tag");
if (aTag == nsnull)
return NS_OK;
PRInt32 nameSpaceID;
if (NS_SUCCEEDED(aContent->GetNameSpaceID(nameSpaceID)) &&
nameSpaceID == nsXULAtoms::nameSpaceID) {
// The following code allows the user to specify the base tag
// of a XUL object using XBL. XUL objects (like boxes, menus, etc.)
// can then be extended arbitrarily.
if (!aXBLBaseTag) {
const nsStyleUserInterface* ui= (const nsStyleUserInterface*)
aStyleContext->GetStyleData(eStyleStruct_UserInterface);
// Ensure that our XBL bindings are installed.
if (ui->mBehavior != "") {
// Get the XBL loader.
nsresult rv;
NS_WITH_SERVICE(nsIXBLService, xblService, "component://netscape/xbl", &rv);
if (!xblService)
return rv;
// Load the bindings.
xblService->LoadBindings(aContent, ui->mBehavior);
nsCOMPtr<nsIAtom> baseTag;
xblService->GetBaseTag(aContent, getter_AddRefs(baseTag));
if (baseTag) {
// Construct the frame using the XBL base tag.
return ConstructXULFrame( aPresShell,
aPresContext,
aState,
aContent,
aParentFrame,
baseTag,
aStyleContext,
aFrameItems,
PR_TRUE,
aHaltProcessing );
}
}
}
// See if the element is absolutely positioned
const nsStylePosition* position = (const nsStylePosition*)
aStyleContext->GetStyleData(eStyleStruct_Position);
if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition)
isAbsolutelyPositioned = PR_TRUE;
// Create a frame based on the tag
// box is first because it is created the most.
// BOX CONSTRUCTION
if (aTag == nsXULAtoms::box || aTag == nsXULAtoms::tabbox ||
aTag == nsXULAtoms::tabpage || aTag == nsXULAtoms::tabcontrol ||
aTag == nsXULAtoms::radiogroup) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewBoxFrame(aPresShell, &newFrame);
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
// Boxes can scroll.
if (IsScrollable(aPresContext, display)) {
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, aStyleContext, newFrame, aParentFrame,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
newFrame->GetParent(&aParentFrame);
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
} // End of BOX CONSTRUCTION logic
// BUTTON CONSTRUCTION
else if (aTag == nsXULAtoms::button) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewXULButtonFrame(aPresShell, &newFrame);
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
// Boxes can scroll.
if (IsScrollable(aPresContext, display)) {
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, aStyleContext, newFrame, aParentFrame,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
newFrame->GetParent(&aParentFrame);
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
} // End of BUTTON CONSTRUCTION logic
// TITLED BUTTON CONSTRUCTION
else if (aTag == nsXULAtoms::titledbutton ||
aTag == nsXULAtoms::image) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewTitledButtonFrame(aPresShell, &newFrame);
}
// End of TITLED BUTTON CONSTRUCTION logic
else if (aTag == nsXULAtoms::spring) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewSpringFrame(aPresShell, &newFrame);
}
// End of TITLED BUTTON CONSTRUCTION logic
// TEXT CONSTRUCTION
else if (aTag == nsXULAtoms::text) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewXULTextFrame(aPresShell, &newFrame);
}
// End of TEXT CONSTRUCTION logic
// Menu Construction
else if (aTag == nsXULAtoms::menu ||
aTag == nsXULAtoms::menuitem ||
aTag == nsXULAtoms::menulist ||
aTag == nsXULAtoms::menubutton) {
// A derived class box frame
// that has custom reflow to prevent menu children
// from becoming part of the flow.
processChildren = PR_TRUE; // Will need this to be custom.
isReplaced = PR_TRUE;
rv = NS_NewMenuFrame(aPresShell, &newFrame, (aTag != nsXULAtoms::menuitem));
}
else if (aTag == nsXULAtoms::menubar) {
#if defined(XP_MAC) || defined(RHAPSODY) // The Mac uses its native menu bar.
aHaltProcessing = PR_TRUE;
return NS_OK;
#else
processChildren = PR_TRUE;
rv = NS_NewMenuBarFrame(aPresShell, &newFrame);
#endif
}
else if (aTag == nsXULAtoms::popupset) {
// This frame contains child popups
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewPopupSetFrame(aPresShell, &newFrame);
}
else if (aTag == nsXULAtoms::menupopup || aTag == nsXULAtoms::popup) {
// This is its own frame that derives from
// box.
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewMenuPopupFrame(aPresShell, &newFrame);
}
else if (aTag == nsXULAtoms::title) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewTitleFrame(aPresShell, &newFrame);
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
// Boxes can scroll.
if (IsScrollable(aPresContext, display)) {
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, aStyleContext, newFrame, aParentFrame,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
newFrame->GetParent(&aParentFrame);
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
} // End of BOX CONSTRUCTION logic
else if (aTag == nsXULAtoms::titledbox) {
ConstructTitledBoxFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, aTag, aStyleContext, newFrame);
processChildren = PR_FALSE;
isReplaced = PR_TRUE;
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
// Boxes can scroll.
if (IsScrollable(aPresContext, display)) {
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, aStyleContext, newFrame, aParentFrame,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
newFrame->GetParent(&aParentFrame);
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
}
else if (aTag == nsXULAtoms::spinner)
rv = NS_NewSpinnerFrame(aPresShell, &newFrame);
else if (aTag == nsXULAtoms::colorpicker)
rv = NS_NewColorPickerFrame(aPresShell, &newFrame);
else if (aTag == nsXULAtoms::fontpicker)
rv = NS_NewFontPickerFrame(aPresShell, &newFrame);
else if (aTag == nsXULAtoms::iframe) {
isReplaced = PR_TRUE;
rv = NS_NewHTMLFrameOuterFrame(aPresShell, &newFrame);
}
else if (aTag == nsXULAtoms::editor) {
isReplaced = PR_TRUE;
rv = NS_NewHTMLFrameOuterFrame(aPresShell, &newFrame);
}
else if (aTag == nsXULAtoms::browser) {
isReplaced = PR_TRUE;
rv = NS_NewHTMLFrameOuterFrame(aPresShell, &newFrame);
}
// TREE CONSTRUCTION
// The following code is used to construct a tree view from the XUL content
// model.
else if (aTag == nsXULAtoms::treeitem ||
aTag == nsXULAtoms::treechildren) {
nsIFrame* newTopFrame;
rv = ConstructTableGroupFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, aStyleContext,
PR_TRUE, newTopFrame, newFrame, treeCreator, nsnull);
aFrameItems.AddChild(newFrame);
return rv;
}
else if (aTag == nsXULAtoms::tree)
{
nsIFrame* geometricParent = aParentFrame;
if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition) {
isAbsolutelyPositioned = PR_TRUE;
aParentFrame = aState.mAbsoluteItems.containingBlock;
}
if (NS_STYLE_POSITION_FIXED == position->mPosition) {
isFixedPositioned = PR_TRUE;
aParentFrame = aState.mFixedItems.containingBlock;
}
rv = ConstructTableFrame(aPresShell, aPresContext, aState, aContent, geometricParent, aStyleContext,
newFrame, treeCreator);
// Note: table construction function takes care of initializing the frame,
// processing children, and setting the initial child list
if (isAbsolutelyPositioned || isFixedPositioned) {
nsIFrame* placeholderFrame;
CreatePlaceholderFrameFor(aPresShell, aPresContext, aState.mFrameManager, aContent,
newFrame, aStyleContext, aParentFrame, &placeholderFrame);
// Add the positioned frame to its containing block's list of child frames
if (isAbsolutelyPositioned) {
aState.mAbsoluteItems.AddChild(newFrame);
} else {
aState.mFixedItems.AddChild(newFrame);
}
// Add the placeholder frame to the flow
aFrameItems.AddChild(placeholderFrame);
} else {
// Add the table frame to the flow
aFrameItems.AddChild(newFrame);
}
// Make sure we add a mapping in the content->frame hash table
goto addToHashTable;
}
else if (aTag == nsXULAtoms::treerow)
{
// A tree item causes a table row to be constructed that is always
// slaved to the nearest enclosing table row group (regardless of how
// deeply nested it is within other tree items).
rv = ConstructTableRowFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, aStyleContext,
newFrame, ignore, treeCreator);
aFrameItems.AddChild(newFrame);
return rv;
}
else if (aTag == nsXULAtoms::treecell)
{
// We could be in a hidden column.
// XXX This is so disgusting.
if (nsTreeCellFrame::ShouldBuildCell(aParentFrame, aContent)) {
// We make a tree cell frame and process the children.
nsIFrame* ignore2;
rv = ConstructTableCellFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, aStyleContext,
newFrame, ignore, ignore2, treeCreator);
aFrameItems.AddChild(newFrame);
}
else aHaltProcessing = PR_TRUE;
return rv;
}
else if (aTag == nsXULAtoms::treeindentation)
{
rv = NS_NewTreeIndentationFrame(aPresShell, &newFrame);
}
// End of TREE CONSTRUCTION code here (there's more later on in the function)
// TOOLBAR CONSTRUCTION
else if (aTag == nsXULAtoms::toolbox) {
processChildren = PR_TRUE;
rv = NS_NewToolboxFrame(aPresShell, &newFrame);
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
if (IsScrollable(aPresContext, display)) {
// build the scrollframe
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, aStyleContext, newFrame, aParentFrame,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
newFrame->GetParent(&aParentFrame);
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
}
else if (aTag == nsXULAtoms::toolbar) {
processChildren = PR_TRUE;
rv = NS_NewToolbarFrame(aPresShell, &newFrame);
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
if (IsScrollable(aPresContext, display)) {
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, aStyleContext, newFrame, aParentFrame,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
newFrame->GetParent(&aParentFrame);
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
}
else if (aTag == nsXULAtoms::toolbaritem) {
processChildren = PR_TRUE;
rv = NS_NewToolbarItemFrame(aPresShell, &newFrame);
}
// End of TOOLBAR CONSTRUCTION logic
// PROGRESS METER CONSTRUCTION
else if (aTag == nsXULAtoms::progressbar) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewProgressMeterFrame(aPresShell, &newFrame);
}
// End of PROGRESS METER CONSTRUCTION logic
// XULCHECKBOX CONSTRUCTION
else if (aTag == nsXULAtoms::checkbox ||
aTag == nsXULAtoms::radio) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewXULCheckboxFrame(aPresShell, &newFrame);
}
// End of XULCHECKBOX CONSTRUCTION logic
// STACK CONSTRUCTION
else if (aTag == nsXULAtoms::stack) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewStackFrame(aPresShell, &newFrame);
}
// End of STACK CONSTRUCTION logic
// DECK CONSTRUCTION
else if (aTag == nsXULAtoms::deck || aTag == nsXULAtoms::tabpanel) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewDeckFrame(aPresShell, &newFrame);
}
// End of DECK CONSTRUCTION logic
// TAB CONSTRUCTION
else if (aTag == nsXULAtoms::tab) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewTabFrame(aPresShell, &newFrame);
}
// End of TAB CONSTRUCTION logic
// SLIDER CONSTRUCTION
else if (aTag == nsXULAtoms::slider) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewSliderFrame(aPresShell, &newFrame);
}
// End of SLIDER CONSTRUCTION logic
// SCROLLBAR CONSTRUCTION
else if (aTag == nsXULAtoms::scrollbar) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewScrollbarFrame(aPresShell, &newFrame);
}
// End of SCROLLBAR CONSTRUCTION logic
// SCROLLBUTTON CONSTRUCTION
else if (aTag == nsXULAtoms::scrollbarbutton) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewScrollbarButtonFrame(aPresShell, &newFrame);
}
// End of SCROLLBUTTON CONSTRUCTION logic
// SPLITTER CONSTRUCTION
else if (aTag == nsXULAtoms::splitter) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewSplitterFrame(aPresShell, &newFrame);
}
// End of SPLITTER CONSTRUCTION logic
// GRIPPY CONSTRUCTION
else if (aTag == nsXULAtoms::grippy) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewGrippyFrame(aPresShell, &newFrame);
}
// End of GRIPPY CONSTRUCTION logic
}
// If we succeeded in creating a frame then initialize it, process its
// children (if requested), and set the initial child list
if (NS_SUCCEEDED(rv) && newFrame != nsnull) {
// if no top frame was created then the top is the new frame
if (topFrame == nsnull)
topFrame = newFrame;
// If the frame is a replaced element, then set the frame state bit
if (isReplaced) {
nsFrameState state;
newFrame->GetFrameState(&state);
newFrame->SetFrameState(state | NS_FRAME_REPLACED_ELEMENT);
}
// xul does not support absolute positioning
nsIFrame* geometricParent = aParentFrame;
/*
nsIFrame* geometricParent = isAbsolutelyPositioned
? aState.mAbsoluteItems.containingBlock
: aParentFrame;
*/
// if the new frame was already initialized to initialize it again.
if (!frameHasBeenInitialized) {
InitAndRestoreFrame(aPresContext, aState, aContent,
geometricParent, aStyleContext, nsnull, newFrame);
// See if we need to create a view, e.g. the frame is absolutely positioned
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
aStyleContext, PR_FALSE);
}
// Process the child content if requested
nsFrameItems childItems;
if (processChildren) {
rv = ProcessChildren(aPresShell, aPresContext, aState, aContent, newFrame,
PR_FALSE, childItems, PR_FALSE);
// if there are any anonymous children create frames for them
nsCOMPtr<nsIAtom> tag(aTag);
if (aXBLBaseTag) {
aContent->GetTag(*getter_AddRefs(tag));
}
CreateAnonymousFrames(aPresShell, aPresContext, tag, aState, aContent, newFrame,
childItems);
// Set the frame's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
}
// Add the new frame to our list of frame items.
aFrameItems.AddChild(topFrame);
// If the frame is absolutely positioned, then create a placeholder frame
if (isAbsolutelyPositioned || isFixedPositioned) {
nsIFrame* placeholderFrame;
CreatePlaceholderFrameFor(aPresShell, aPresContext, aState.mFrameManager, aContent,
newFrame, aStyleContext, aParentFrame, &placeholderFrame);
// Add the positioned frame to its containing block's list of child frames
if (isAbsolutelyPositioned) {
aState.mAbsoluteItems.AddChild(newFrame);
} else {
aState.mFixedItems.AddChild(newFrame);
}
// Add the placeholder frame to the flow
aFrameItems.AddChild(placeholderFrame);
}
}
addToHashTable:
if (topFrame) {
// the top frame is always what we map the content to. This is the frame that contains a pointer
// to the content node.
// Add a mapping from content object to primary frame. Note that for
// floated and positioned frames this is the out-of-flow frame and not
// the placeholder frame
if (!primaryFrameSet)
aState.mFrameManager->SetPrimaryFrameFor(aContent, topFrame);
}
return rv;
}
#endif
nsresult
nsCSSFrameConstructor::BeginBuildingScrollFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIStyleContext* aContentStyle,
nsIFrame* aParentFrame,
nsIAtom* aScrolledPseudo,
nsIDocument* aDocument,
nsIFrame*& aNewFrame,
nsCOMPtr<nsIStyleContext>& aScrolledChildStyle,
nsIFrame*& aScrollableFrame)
{
nsIFrame* scrollFrame = nsnull;
nsIFrame* parentFrame = nsnull;
nsIFrame* gfxScrollFrame = nsnull;
nsFrameItems anonymousItems;
nsCOMPtr<nsIStyleContext> contentStyle = dont_QueryInterface(aContentStyle);
PRBool isGfx = HasGfxScrollbars(aPresContext);
if (isGfx) {
BuildGfxScrollFrame(aPresShell, aPresContext, aState, aContent, aDocument, aParentFrame,
contentStyle, gfxScrollFrame, anonymousItems);
scrollFrame = anonymousItems.childList;
parentFrame = gfxScrollFrame;
aNewFrame = gfxScrollFrame;
// we used the style that was passed in. So resolve another one.
nsCOMPtr<nsIStyleContext> scrollPseudoStyle;
aPresContext->ResolvePseudoStyleContextFor(aContent,
nsLayoutAtoms::scrolledContentPseudo,
contentStyle, PR_FALSE,
getter_AddRefs(scrollPseudoStyle));
contentStyle = scrollPseudoStyle;
InitAndRestoreFrame(aPresContext, aState, aContent,
parentFrame, contentStyle, nsnull, scrollFrame);
} else {
NS_NewScrollFrame(aPresShell, &scrollFrame);
aNewFrame = scrollFrame;
parentFrame = aParentFrame;
InitAndRestoreFrame(aPresContext, aState, aContent,
parentFrame, contentStyle, nsnull, scrollFrame);
}
// initialize the scrolled frame
nsCOMPtr<nsIStyleContext> scrolledPseudoStyle;
aPresContext->ResolvePseudoStyleContextFor(aContent,
aScrolledPseudo,
contentStyle, PR_FALSE,
getter_AddRefs(scrolledPseudoStyle));
aScrollableFrame = scrollFrame;
// set the child frame for the gfxscrollbar if the is one. This frames will be the
// 2 scrollbars and the scrolled frame.
if (gfxScrollFrame) {
gfxScrollFrame->SetInitialChildList(aPresContext, nsnull, anonymousItems.childList);
}
aScrolledChildStyle = scrolledPseudoStyle;
return NS_OK;
}
nsresult
nsCSSFrameConstructor::FinishBuildingScrollFrame(nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aScrollFrame,
nsIFrame* aScrolledFrame,
nsIStyleContext* aScrolledContentStyle)
{
// create a view
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, aScrolledFrame,
aScrolledContentStyle, PR_TRUE);
// the the scroll frames child list
aScrollFrame->SetInitialChildList(aPresContext, nsnull, aScrolledFrame);
return NS_OK;
}
/**
* Called to wrap a scrollframe or gfx scrollframe around a frame. The hierarchy will look like this
*
* ------ for native scrollbars -----
*
*
* ScrollFrame
* ^
* |
* Frame (scrolled frame you passed in)
*
*
* ------- for gfx scrollbars ------
*
*
* GfxScrollFrame
* ^
* |
* ScrollPort
* ^
* |
* Frame (scrolled frame you passed in)
*
*
*-----------------------------------
* LEGEND:
*
* ScrollFrame: This is a frame that has a view that manages native scrollbars. It implements
* nsIScrollableView. It also manages clipping and scrolling of native widgets by
* having a native scrolling window.
*
* GfxScrollFrame: This is a frame that manages gfx cross platform frame based scrollbars.
*
* ScrollPort: This is similar to the ScrollFrame above in that is clips and scrolls its children
* with a native scrolling window. But because it is contained in a GfxScrollFrame
* it does not have any code to do scrollbars so it is much simpler. Infact it only has
* 1 view attached to it. Where the ScrollFrame above has 5!
*
*
* @param aContent the content node of the child to wrap.
* @param aScrolledFrame The frame of the content to wrap. This should not be
* Initialized. This method will initialize it with a scrolled pseudo
* and no nsIContent. The content will be attached to the scrollframe
* returned.
* @param aContentStyle the style context that has already been resolved for the content being passed in.
*
* @param aParentFrame The parent to attach the scroll frame to
*
* @param aNewFrame The new scrollframe or gfx scrollframe that we create. It will contain the
* scrolled frame you passed in. (returned)
* @param aScrolledContentStyle the style that was resolved for the scrolled frame. (returned)
*/
nsresult
nsCSSFrameConstructor::BuildScrollFrame (nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIStyleContext* aContentStyle,
nsIFrame* aScrolledFrame,
nsIFrame* aParentFrame,
nsIFrame*& aNewFrame,
nsIStyleContext*& aScrolledContentStyle)
{
nsIFrame *scrollFrame;
nsCOMPtr<nsIDocument> document;
aContent->GetDocument(*getter_AddRefs(document));
nsCOMPtr<nsIStyleContext> scrolledContentStyle;
BeginBuildingScrollFrame(aPresShell, aPresContext,
aState,
aContent,
aContentStyle,
aParentFrame,
nsLayoutAtoms::scrolledContentPseudo,
document,
aNewFrame,
scrolledContentStyle,
scrollFrame);
InitAndRestoreFrame(aPresContext, aState, aContent,
scrollFrame, scrolledContentStyle, nsnull, aScrolledFrame);
FinishBuildingScrollFrame(aPresContext,
aState,
aContent,
scrollFrame,
aScrolledFrame,
scrolledContentStyle);
aScrolledContentStyle = scrolledContentStyle;
// now set the primary frame to the ScrollFrame
aState.mFrameManager->SetPrimaryFrameFor( aContent, aNewFrame );
return NS_OK;
}
/**
* If we are building GFX scrollframes this will create one
*/
nsresult
nsCSSFrameConstructor::BuildGfxScrollFrame (nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIDocument* aDocument,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewFrame,
nsFrameItems& aAnonymousFrames)
{
NS_NewGfxScrollFrame(aPresShell, &aNewFrame,aDocument);
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, aNewFrame);
nsIFrame* scrollbox = nsnull;
NS_NewScrollPortFrame(aPresShell, &scrollbox);
aAnonymousFrames.AddChild(scrollbox);
// if there are any anonymous children for the nsScrollFrame create frames for them.
CreateAnonymousFrames(aPresShell, aPresContext, aState, aContent, aDocument, aNewFrame,
aAnonymousFrames);
return NS_OK;
}
nsresult
nsCSSFrameConstructor::ConstructFrameByDisplayType(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
const nsStyleDisplay* aDisplay,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsFrameItems& aFrameItems)
{
PRBool primaryFrameSet = PR_FALSE;
PRBool isAbsolutelyPositioned = PR_FALSE;
PRBool isFixedPositioned = PR_FALSE;
PRBool isFloating = PR_FALSE;
PRBool isBlock = aDisplay->IsBlockLevel();
nsIFrame* newFrame = nsnull; // the frame we construct
nsIFrame* newBlock = nsnull;
nsIFrame* nextInline = nsnull;
nsTableCreator tableCreator(aPresShell); // Used to make table frames.
PRBool addToHashTable = PR_TRUE;
nsresult rv = NS_OK;
// Get the position syle info
const nsStylePosition* position = (const nsStylePosition*)
aStyleContext->GetStyleData(eStyleStruct_Position);
// The frame is also a block if it's an inline frame that's floated or
// absolutely positioned
if (NS_STYLE_FLOAT_NONE != aDisplay->mFloats) {
isFloating = PR_TRUE;
}
if ((NS_STYLE_DISPLAY_INLINE == aDisplay->mDisplay) &&
(isFloating || position->IsAbsolutelyPositioned())) {
isBlock = PR_TRUE;
}
// If the frame is a block-level frame and is scrollable, then wrap it
// in a scroll frame.
// XXX Ignore tables for the time being
if ((isBlock && (aDisplay->mDisplay != NS_STYLE_DISPLAY_TABLE)) &&
IsScrollable(aPresContext, aDisplay)) {
// See if it's absolute positioned or fixed positioned
if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition) {
isAbsolutelyPositioned = PR_TRUE;
} else if (NS_STYLE_POSITION_FIXED == position->mPosition) {
isFixedPositioned = PR_TRUE;
}
// Initialize it
nsIFrame* geometricParent = aParentFrame;
if (isAbsolutelyPositioned) {
geometricParent = aState.mAbsoluteItems.containingBlock;
} else if (isFixedPositioned) {
geometricParent = aState.mFixedItems.containingBlock;
}
nsIFrame* scrolledFrame = nsnull;
NS_NewAreaFrame(aPresShell, &scrolledFrame, NS_BLOCK_SPACE_MGR |
NS_BLOCK_SHRINK_WRAP | NS_BLOCK_MARGIN_ROOT);
nsIStyleContext* newStyle = nsnull;
// Build the scrollframe it
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, aStyleContext, scrolledFrame, geometricParent,
newFrame, newStyle);
// buildscrollframe sets the primary frame.
primaryFrameSet = PR_TRUE;
//-----
// The area frame is a floater container
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
nsFrameConstructorSaveState floaterSaveState;
aState.PushFloaterContainingBlock(scrolledFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
// Process children
nsFrameConstructorSaveState absoluteSaveState;
nsFrameItems childItems;
PRBool isPositionedContainingBlock = isAbsolutelyPositioned ||
isFixedPositioned;
if (isPositionedContainingBlock) {
// The area frame becomes a container for child frames that are
// absolutely positioned
aState.PushAbsoluteContainingBlock(scrolledFrame, absoluteSaveState);
}
ProcessChildren(aPresShell, aPresContext, aState, aContent, scrolledFrame, PR_FALSE,
childItems, PR_TRUE);
// Set the scrolled frame's initial child lists
scrolledFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (isPositionedContainingBlock && aState.mAbsoluteItems.childList) {
scrolledFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::absoluteList,
aState.mAbsoluteItems.childList);
}
if (aState.mFloatedItems.childList) {
scrolledFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
///------
}
// See if the frame is absolute or fixed positioned
else if (position->IsAbsolutelyPositioned() &&
((NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_INLINE == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_LIST_ITEM == aDisplay->mDisplay))) {
if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition) {
isAbsolutelyPositioned = PR_TRUE;
} else {
isFixedPositioned = PR_TRUE;
}
// Create a frame to wrap up the absolute positioned item
NS_NewAbsoluteItemWrapperFrame(aPresShell, &newFrame);
InitAndRestoreFrame(aPresContext, aState, aContent,
(isAbsolutelyPositioned
? aState.mAbsoluteItems.containingBlock
: aState.mFixedItems.containingBlock),
aStyleContext, nsnull, newFrame);
// Create a view
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
aStyleContext, PR_FALSE);
// Process the child content. The area frame becomes a container for child
// frames that are absolutely positioned
nsFrameConstructorSaveState absoluteSaveState;
nsFrameConstructorSaveState floaterSaveState;
nsFrameItems childItems;
PRBool haveFirstLetterStyle = PR_FALSE, haveFirstLineStyle = PR_FALSE;
if (aDisplay->IsBlockLevel()) {
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
}
aState.PushAbsoluteContainingBlock(newFrame, absoluteSaveState);
aState.PushFloaterContainingBlock(newFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
ProcessChildren(aPresShell, aPresContext, aState, aContent, newFrame, PR_TRUE,
childItems, PR_TRUE);
// Set the frame's initial child list(s)
newFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (aState.mAbsoluteItems.childList) {
newFrame->SetInitialChildList(aPresContext, nsLayoutAtoms::absoluteList,
aState.mAbsoluteItems.childList);
}
if (aState.mFloatedItems.childList) {
newFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
}
// See if the frame is floated, and it's a block or inline frame
else if (isFloating &&
((NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_INLINE == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_LIST_ITEM == aDisplay->mDisplay))) {
// Create an area frame
NS_NewFloatingItemWrapperFrame(aPresShell, &newFrame);
// Initialize the frame
InitAndRestoreFrame(aPresContext, aState, aContent,
aState.mFloatedItems.containingBlock,
aStyleContext, nsnull, newFrame);
// See if we need to create a view
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
aStyleContext, PR_FALSE);
// Process the child content
nsFrameConstructorSaveState floaterSaveState;
nsFrameItems childItems;
PRBool haveFirstLetterStyle = PR_FALSE, haveFirstLineStyle = PR_FALSE;
if (aDisplay->IsBlockLevel()) {
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
}
aState.PushFloaterContainingBlock(newFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
ProcessChildren(aPresShell, aPresContext, aState, aContent, newFrame,
PR_TRUE, childItems, PR_TRUE);
// Set the frame's initial child list(s)
newFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (aState.mFloatedItems.childList) {
newFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
}
// See if it's relatively positioned
else if ((NS_STYLE_POSITION_RELATIVE == position->mPosition) &&
((NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_INLINE == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_LIST_ITEM == aDisplay->mDisplay))) {
// Is it block-level or inline-level?
PRBool isBlockFrame = PR_FALSE;
if ((NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_LIST_ITEM == aDisplay->mDisplay)) {
// Create a wrapper frame. No space manager, though
NS_NewRelativeItemWrapperFrame(aPresShell, &newFrame);
isBlockFrame = PR_TRUE;
} else {
// Create a positioned inline frame
NS_NewPositionedInlineFrame(aPresShell, &newFrame);
}
// Initialize the frame
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, newFrame);
// Create a view
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
aStyleContext, PR_FALSE);
// Process the child content. Relatively positioned frames becomes a
// container for child frames that are positioned
nsFrameConstructorSaveState absoluteSaveState;
nsFrameConstructorSaveState floaterSaveState;
nsFrameItems childItems;
aState.PushAbsoluteContainingBlock(newFrame, absoluteSaveState);
if (isBlockFrame) {
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
aState.PushFloaterContainingBlock(newFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
}
ProcessChildren(aPresShell, aPresContext, aState, aContent, newFrame, PR_TRUE,
childItems, isBlockFrame);
// Set the frame's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (aState.mAbsoluteItems.childList) {
newFrame->SetInitialChildList(aPresContext, nsLayoutAtoms::absoluteList,
aState.mAbsoluteItems.childList);
}
if (isBlockFrame && aState.mFloatedItems.childList) {
newFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
}
// See if it's a block frame of some sort
else if ((NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_LIST_ITEM == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_RUN_IN == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_COMPACT == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_INLINE_BLOCK == aDisplay->mDisplay)) {
// Create the block frame
rv = NS_NewBlockFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
// That worked so construct the block and its children
rv = ConstructBlock(aPresShell, aPresContext, aState, aDisplay, aContent,
aParentFrame, aStyleContext, newFrame);
}
}
// See if it's an inline frame of some sort
else if ((NS_STYLE_DISPLAY_INLINE == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_MARKER == aDisplay->mDisplay)) {
// Create the inline frame
rv = NS_NewInlineFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
// That worked so construct the inline and its children
rv = ConstructInline(aPresShell, aPresContext, aState, aDisplay, aContent,
aParentFrame, aStyleContext, newFrame,
&newBlock, &nextInline);
}
// To keep the hash table small don't add inline frames (they're
// typically things like FONT and B), because we can quickly
// find them if we need to
addToHashTable = PR_FALSE;
}
// otherwise let the display property influence the frame type to create
else {
nsIFrame* ignore;
// XXX This section now only handles table frames; should be
// factored out probably
// Use the 'display' property to choose a frame type
switch (aDisplay->mDisplay) {
case NS_STYLE_DISPLAY_TABLE:
{
nsIFrame* geometricParent = aParentFrame;
if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition) {
isAbsolutelyPositioned = PR_TRUE;
geometricParent = aState.mAbsoluteItems.containingBlock;
}
if (NS_STYLE_POSITION_FIXED == position->mPosition) {
isFixedPositioned = PR_TRUE;
geometricParent = aState.mFixedItems.containingBlock;
}
rv = ConstructTableFrame(aPresShell, aPresContext, aState, aContent, geometricParent,
aStyleContext, newFrame, tableCreator);
// Note: table construction function takes care of initializing
// the frame, processing children, and setting the initial child
// list
goto nearly_done;
}
// the next 5 cases are only relevant if the parent is not a table, ConstructTableFrame handles children
case NS_STYLE_DISPLAY_TABLE_CAPTION:
{
// aParentFrame may be an inner table frame rather than an outer frame
// In this case we need to get the outer frame.
nsIFrame* parentFrame = aParentFrame;
nsIFrame* outerFrame = nsnull;
aParentFrame->GetParent(&outerFrame);
nsCOMPtr<nsIAtom> frameType;
if (outerFrame) {
outerFrame->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::tableOuterFrame == frameType.get()) {
parentFrame = outerFrame;
}
}
rv = ConstructTableCaptionFrame(aPresShell, aPresContext, aState, aContent, parentFrame,
aStyleContext, newFrame, ignore, tableCreator);
aFrameItems.AddChild(newFrame);
return rv;
}
case NS_STYLE_DISPLAY_TABLE_ROW_GROUP:
case NS_STYLE_DISPLAY_TABLE_HEADER_GROUP:
case NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP:
case NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP:
{
PRBool isRowGroup = (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP != aDisplay->mDisplay);
rv = ConstructTableGroupFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
aStyleContext, isRowGroup, newFrame, ignore, tableCreator);
aFrameItems.AddChild(newFrame);
return rv;
}
case NS_STYLE_DISPLAY_TABLE_COLUMN:
rv = ConstructTableColFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, aStyleContext,
newFrame, ignore, tableCreator);
aFrameItems.AddChild(newFrame);
return rv;
case NS_STYLE_DISPLAY_TABLE_ROW:
rv = ConstructTableRowFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, aStyleContext,
newFrame, ignore, tableCreator);
aFrameItems.AddChild(newFrame);
return rv;
case NS_STYLE_DISPLAY_TABLE_CELL:
{
nsIFrame* ignore2;
rv = ConstructTableCellFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, aStyleContext,
newFrame, ignore, ignore2, tableCreator);
aFrameItems.AddChild(newFrame);
return rv;
}
default:
// Don't create any frame for content that's not displayed...
break;
}
}
// If the frame is absolutely positioned, then create a placeholder frame
nearly_done:
if (isAbsolutelyPositioned || isFixedPositioned) {
nsIFrame* placeholderFrame;
CreatePlaceholderFrameFor(aPresShell, aPresContext, aState.mFrameManager, aContent,
newFrame, aStyleContext, aParentFrame, &placeholderFrame);
// Add the positioned frame to its containing block's list of child frames
if (isAbsolutelyPositioned) {
aState.mAbsoluteItems.AddChild(newFrame);
} else {
aState.mFixedItems.AddChild(newFrame);
}
// Add the placeholder frame to the flow
aFrameItems.AddChild(placeholderFrame);
} else if (isFloating) {
nsIFrame* placeholderFrame;
CreatePlaceholderFrameFor(aPresShell, aPresContext, aState.mFrameManager, aContent, newFrame,
aStyleContext, aParentFrame, &placeholderFrame);
// Add the floating frame to its containing block's list of child frames
aState.mFloatedItems.AddChild(newFrame);
// Add the placeholder frame to the flow
aFrameItems.AddChild(placeholderFrame);
} else if (nsnull != newFrame) {
// Add the frame we just created to the flowed list
aFrameItems.AddChild(newFrame);
if (newBlock) {
aFrameItems.AddChild(newBlock);
if (nextInline) {
aFrameItems.AddChild(nextInline);
}
}
}
if (newFrame && addToHashTable) {
// Add a mapping from content object to primary frame. Note that for
// floated and positioned frames this is the out-of-flow frame and not
// the placeholder frame
if (!primaryFrameSet)
aState.mFrameManager->SetPrimaryFrameFor(aContent, newFrame);
}
return rv;
}
nsresult
nsCSSFrameConstructor::GetAdjustedParentFrame(nsIPresContext* aPresContext,
nsIFrame* aCurrentParentFrame,
PRUint8 aChildDisplayType,
nsIFrame*& aNewParentFrame)
{
NS_PRECONDITION(nsnull!=aCurrentParentFrame, "bad arg aCurrentParentFrame");
nsresult rv = NS_OK;
// by default, the new parent frame is the given current parent frame
aNewParentFrame = aCurrentParentFrame;
if (nsnull != aCurrentParentFrame) {
const nsStyleDisplay* currentParentDisplay;
aCurrentParentFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)currentParentDisplay);
if (NS_STYLE_DISPLAY_TABLE == currentParentDisplay->mDisplay) {
if (NS_STYLE_DISPLAY_TABLE_CAPTION != aChildDisplayType) {
nsIFrame *innerTableFrame = nsnull;
aCurrentParentFrame->FirstChild(aPresContext, nsnull, &innerTableFrame);
if (nsnull != innerTableFrame) {
const nsStyleDisplay* innerTableDisplay;
innerTableFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)innerTableDisplay);
if (NS_STYLE_DISPLAY_TABLE == innerTableDisplay->mDisplay) {
// we were given the outer table frame, use the inner table frame
aNewParentFrame=innerTableFrame;
} // else we were already given the inner table frame
} // else the current parent has no children and cannot be an outer table frame
} else { // else the child is a caption and really belongs to the outer table frame
nsIFrame* parFrame = nsnull;
aCurrentParentFrame->GetParent(&parFrame);
const nsStyleDisplay* parDisplay;
aCurrentParentFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)parDisplay);
if (NS_STYLE_DISPLAY_TABLE == parDisplay->mDisplay) {
aNewParentFrame = parFrame; // aNewParentFrame was an inner frame
}
}
}
} else {
rv = NS_ERROR_NULL_POINTER;
}
NS_POSTCONDITION(nsnull!=aNewParentFrame, "bad result null aNewParentFrame");
return rv;
}
PRBool
nsCSSFrameConstructor::IsScrollable(nsIPresContext* aPresContext,
const nsStyleDisplay* aDisplay)
{
// For the time being it's scrollable if the overflow property is auto or
// scroll, regardless of whether the width or height is fixed in size
switch (aDisplay->mOverflow) {
case NS_STYLE_OVERFLOW_SCROLL:
case NS_STYLE_OVERFLOW_AUTO:
case NS_STYLE_OVERFLOW_SCROLLBARS_NONE:
case NS_STYLE_OVERFLOW_SCROLLBARS_HORIZONTAL:
case NS_STYLE_OVERFLOW_SCROLLBARS_VERTICAL:
return PR_TRUE;
}
return PR_FALSE;
}
nsresult
nsCSSFrameConstructor::InitAndRestoreFrame(nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame* aPrevInFlow,
nsIFrame* aNewFrame)
{
nsresult rv = NS_OK;
NS_ASSERTION(aNewFrame, "Null frame cannot be initialized");
// Initialize the frame
rv = aNewFrame->Init(aPresContext, aContent, aParentFrame,
aStyleContext, aPrevInFlow);
if (aState.mFrameState && aState.mFrameManager) {
aState.mFrameManager->RestoreFrameState(aPresContext, aNewFrame, aState.mFrameState);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ResolveStyleContext(nsIPresContext* aPresContext,
nsIFrame* aParentFrame,
nsIContent* aContent,
nsIAtom* aTag,
nsIStyleContext** aStyleContext)
{
nsresult rv = NS_OK;
// Resolve the style context based on the content object and the parent
// style context
nsCOMPtr<nsIStyleContext> parentStyleContext;
aParentFrame->GetStyleContext(getter_AddRefs(parentStyleContext));
if (nsLayoutAtoms::textTagName == aTag) {
// Use a special pseudo element style context for text
nsCOMPtr<nsIContent> parentContent;
if (nsnull != aParentFrame) {
aParentFrame->GetContent(getter_AddRefs(parentContent));
}
rv = aPresContext->ResolvePseudoStyleContextFor(parentContent,
nsHTMLAtoms::textPseudo,
parentStyleContext,
PR_FALSE,
aStyleContext);
} else if (nsLayoutAtoms::commentTagName == aTag) {
// Use a special pseudo element style context for comments
nsCOMPtr<nsIContent> parentContent;
if (nsnull != aParentFrame) {
aParentFrame->GetContent(getter_AddRefs(parentContent));
}
rv = aPresContext->ResolvePseudoStyleContextFor(parentContent,
nsHTMLAtoms::commentPseudo,
parentStyleContext,
PR_FALSE,
aStyleContext);
} else if (nsLayoutAtoms::processingInstructionTagName == aTag) {
// Use a special pseudo element style context for comments
nsCOMPtr<nsIContent> parentContent;
if (nsnull != aParentFrame) {
aParentFrame->GetContent(getter_AddRefs(parentContent));
}
rv = aPresContext->ResolvePseudoStyleContextFor(parentContent,
nsHTMLAtoms::processingInstructionPseudo,
parentStyleContext,
PR_FALSE,
aStyleContext);
} else {
rv = aPresContext->ResolveStyleContextFor(aContent, parentStyleContext,
PR_FALSE,
aStyleContext);
}
return rv;
}
// MathML Mod - RBS
#ifdef MOZ_MATHML
nsresult
nsCSSFrameConstructor::ConstructMathMLFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
nsIStyleContext* aStyleContext,
nsFrameItems& aFrameItems)
{
PRBool processChildren = PR_TRUE; // Whether we should process child content.
// MathML frames are inline frames.
// processChildren = PR_TRUE for inline frames.
// see case NS_STYLE_DISPLAY_INLINE in
// ConstructFrameByDisplayType()
nsresult rv = NS_OK;
PRBool isAbsolutelyPositioned = PR_FALSE;
PRBool isFixedPositioned = PR_FALSE;
PRBool isReplaced = PR_FALSE;
NS_ASSERTION(aTag != nsnull, "null MathML tag");
if (aTag == nsnull)
return NS_OK;
// Make sure that we remain confined in the MathML world
PRInt32 nameSpaceID;
rv = aContent->GetNameSpaceID(nameSpaceID);
if (NS_FAILED(rv) || nameSpaceID != nsMathMLAtoms::nameSpaceID)
return NS_OK;
// Initialize the new frame
nsIFrame* newFrame = nsnull;
nsIFrame* ignore = nsnull;
nsMathMLmtableCreator mathTableCreator(aPresShell); // Used to make table views.
// See if the element is absolute or fixed positioned
const nsStylePosition* position = (const nsStylePosition*)
aStyleContext->GetStyleData(eStyleStruct_Position);
if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition) {
isAbsolutelyPositioned = PR_TRUE;
}
else if (NS_STYLE_POSITION_FIXED == position->mPosition) {
isFixedPositioned = PR_TRUE;
}
if (aTag == nsMathMLAtoms::mi_)
rv = NS_NewMathMLmiFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mn_)
rv = NS_NewMathMLmnFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mo_)
rv = NS_NewMathMLmoFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mfrac_)
rv = NS_NewMathMLmfracFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::msup_)
rv = NS_NewMathMLmsupFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::msub_)
rv = NS_NewMathMLmsubFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::msubsup_)
rv = NS_NewMathMLmsubsupFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::munder_)
rv = NS_NewMathMLmunderFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mover_)
rv = NS_NewMathMLmoverFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::munderover_)
rv = NS_NewMathMLmunderoverFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mphantom_)
rv = NS_NewMathMLmphantomFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mpadded_)
rv = NS_NewMathMLmpaddedFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mspace_)
rv = NS_NewMathMLmspaceFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::ms_)
rv = NS_NewMathMLmsFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mfenced_)
rv = NS_NewMathMLmfencedFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mmultiscripts_)
rv = NS_NewMathMLmmultiscriptsFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mstyle_)
rv = NS_NewMathMLmstyleFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::msqrt_)
rv = NS_NewMathMLmsqrtFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mroot_)
rv = NS_NewMathMLmrootFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::maction_)
rv = NS_NewMathMLmactionFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mrow_ ||
aTag == nsMathMLAtoms::mtext_ ||
aTag == nsMathMLAtoms::merror_ ||
aTag == nsMathMLAtoms::none_ ||
aTag == nsMathMLAtoms::mprescripts_ )
rv = NS_NewMathMLmrowFrame(aPresShell, &newFrame);
// CONSTRUCTION of MTABLE elements
else if (aTag == nsMathMLAtoms::mtable_) {
// <mtable> is an inline-table, for the moment, we just do what
// <table> does, and wait until nsLineLayout::TreatFrameAsBlock
// can handle NS_STYLE_DISPLAY_INLINE_TABLE.
nsIFrame* geometricParent = aParentFrame;
if (isAbsolutelyPositioned) {
aParentFrame = aState.mAbsoluteItems.containingBlock;
}
else if (isFixedPositioned) {
aParentFrame = aState.mFixedItems.containingBlock;
}
rv = ConstructTableFrame(aPresShell, aPresContext, aState, aContent, geometricParent, aStyleContext,
newFrame, mathTableCreator);
// Note: table construction function takes care of initializing the frame,
// processing children, and setting the initial child list
if (isAbsolutelyPositioned || isFixedPositioned) {
nsIFrame* placeholderFrame;
CreatePlaceholderFrameFor(aPresShell, aPresContext, aState.mFrameManager, aContent, newFrame,
aStyleContext, aParentFrame, &placeholderFrame);
// Add the positioned frame to its containing block's list of child frames
if (isAbsolutelyPositioned) {
aState.mAbsoluteItems.AddChild(newFrame);
} else {
aState.mFixedItems.AddChild(newFrame);
}
// Add the placeholder frame to the flow
aFrameItems.AddChild(placeholderFrame);
} else {
// Add the table frame to the flow
aFrameItems.AddChild(newFrame);
}
return rv;
}
else if (aTag == nsMathMLAtoms::mtd_) {
nsIFrame* ignore2;
rv = ConstructTableCellFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, aStyleContext,
newFrame, ignore, ignore2, mathTableCreator);
aFrameItems.AddChild(newFrame);
return rv;
}
// End CONSTRUCTION of MTABLE elements
else {
return rv;
}
// If we succeeded in creating a frame then initialize it, process its
// children (if requested), and set the initial child list
if (NS_SUCCEEDED(rv) && newFrame != nsnull) {
// If the frame is a replaced element, then set the frame state bit
if (isReplaced) {
nsFrameState state;
newFrame->GetFrameState(&state);
newFrame->SetFrameState(state | NS_FRAME_REPLACED_ELEMENT);
}
nsIFrame* geometricParent = isAbsolutelyPositioned
? aState.mAbsoluteItems.containingBlock
: aParentFrame;
InitAndRestoreFrame(aPresContext, aState, aContent,
geometricParent, aStyleContext, nsnull, newFrame);
// See if we need to create a view, e.g. the frame is absolutely positioned
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
aStyleContext, PR_FALSE);
// Add the new frame to our list of frame items.
aFrameItems.AddChild(newFrame);
// Process the child content if requested
nsFrameItems childItems;
if (processChildren) {
rv = ProcessChildren(aPresShell, aPresContext, aState, aContent, newFrame, PR_TRUE,
childItems, PR_FALSE);
}
// Set the frame's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
// If the frame is absolutely positioned then create a placeholder frame
if (isAbsolutelyPositioned || isFixedPositioned) {
nsIFrame* placeholderFrame;
CreatePlaceholderFrameFor(aPresShell, aPresContext, aState.mFrameManager, aContent, newFrame,
aStyleContext, aParentFrame, &placeholderFrame);
// Add the positioned frame to its containing block's list of child frames
if (isAbsolutelyPositioned) {
aState.mAbsoluteItems.AddChild(newFrame);
} else {
aState.mFixedItems.AddChild(newFrame);
}
// Add the placeholder frame to the flow
aFrameItems.AddChild(placeholderFrame);
}
}
return rv;
}
#endif // MOZ_MATHML
nsresult
nsCSSFrameConstructor::ConstructFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsFrameItems& aFrameItems)
{
NS_PRECONDITION(nsnull != aParentFrame, "no parent frame");
nsresult rv;
// Get the element's tag
nsCOMPtr<nsIAtom> tag;
aContent->GetTag(*getter_AddRefs(tag));
nsCOMPtr<nsIStyleContext> styleContext;
rv = ResolveStyleContext(aPresContext, aParentFrame, aContent, tag, getter_AddRefs(styleContext));
if (NS_SUCCEEDED(rv)) {
// Pre-check for display "none" - if we find that, don't create
// any frame at all
const nsStyleDisplay* display = (const nsStyleDisplay*)
styleContext->GetStyleData(eStyleStruct_Display);
if (NS_STYLE_DISPLAY_NONE == display->mDisplay) {
aState.mFrameManager->SetUndisplayedContent(aContent, styleContext);
}
else {
nsIFrame* lastChild = aFrameItems.lastChild;
// Handle specific frame types
rv = ConstructFrameByTag(aPresShell, aPresContext, aState, aContent, aParentFrame,
tag, styleContext, aFrameItems);
#ifdef INCLUDE_XUL
// Failing to find a matching HTML frame, try creating a specialized
// XUL frame. This is temporary, pending planned factoring of this
// whole process into separate, pluggable steps.
if (NS_SUCCEEDED(rv) && ((nsnull == aFrameItems.childList) ||
(lastChild == aFrameItems.lastChild))) {
PRBool haltProcessing = PR_FALSE;
rv = ConstructXULFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
tag, styleContext, aFrameItems, PR_FALSE, haltProcessing);
if (haltProcessing) {
return rv;
}
}
#endif
// MathML Mod - RBS
#ifdef MOZ_MATHML
if (NS_SUCCEEDED(rv) && ((nsnull == aFrameItems.childList) ||
(lastChild == aFrameItems.lastChild))) {
rv = ConstructMathMLFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
tag, styleContext, aFrameItems);
}
#endif
if (NS_SUCCEEDED(rv) && ((nsnull == aFrameItems.childList) ||
(lastChild == aFrameItems.lastChild))) {
// When there is no explicit frame to create, assume it's a
// container and let display style dictate the rest
rv = ConstructFrameByDisplayType(aPresShell, aPresContext, aState, display, aContent,
aParentFrame, styleContext, aFrameItems);
}
}
}
return rv;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ReconstructDocElementHierarchy(nsIPresContext* aPresContext)
{
nsresult rv = NS_OK;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
if (nsnull != mDocument) {
nsCOMPtr<nsIContent> rootContent(dont_AddRef(mDocument->GetRootContent()));
if (rootContent) {
// Before removing the frames associated with the content object, ask them to save their
// state onto a temporary state object.
CaptureStateForFramesOf(aPresContext, rootContent, mTempFrameTreeState);
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
nsnull, nsnull, mTempFrameTreeState);
nsIFrame* docElementFrame;
// Get the frame that corresponds to the document element
state.mFrameManager->GetPrimaryFrameFor(rootContent, &docElementFrame);
// Clear the hash tables that map from content to frame and out-of-flow
// frame to placeholder frame
state.mFrameManager->ClearPrimaryFrameMap();
state.mFrameManager->ClearPlaceholderFrameMap();
state.mFrameManager->ClearUndisplayedContentMap();
if (docElementFrame) {
nsIFrame* docParentFrame;
docElementFrame->GetParent(&docParentFrame);
if (docParentFrame) {
// Remove the old document element hieararchy
rv = state.mFrameManager->RemoveFrame(aPresContext, *shell,
docParentFrame, nsnull,
docElementFrame);
// XXX Remove any existing fixed items...
if (NS_SUCCEEDED(rv)) {
// Create the new document element hierarchy
nsIFrame* newChild;
nsCOMPtr<nsIStyleContext> rootPseudoStyle;
docParentFrame->GetStyleContext(getter_AddRefs(rootPseudoStyle));
rv = ConstructDocElementFrame(shell, aPresContext, state, rootContent,
docParentFrame, rootPseudoStyle,
newChild);
if (NS_SUCCEEDED(rv)) {
rv = state.mFrameManager->InsertFrames(aPresContext, *shell,
docParentFrame, nsnull,
nsnull, newChild);
// Tell the fixed containing block about its 'fixed' frames
if (state.mFixedItems.childList) {
state.mFrameManager->InsertFrames(aPresContext, *shell,
mFixedContainingBlock, nsLayoutAtoms::fixedList,
nsnull, state.mFixedItems.childList);
}
}
}
}
}
}
}
return rv;
}
nsIFrame*
nsCSSFrameConstructor::GetFrameFor(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIContent* aContent)
{
// Get the primary frame associated with the content
nsIFrame* frame;
aPresShell->GetPrimaryFrameFor(aContent, &frame);
if (nsnull != frame) {
// Check to see if the content is a select and
// then if it has a drop down (thus making it a combobox)
// The drop down is a ListControlFrame derived from a
// nsScrollFrame then get the area frame and that will be the parent
// What is unclear here, is if any of this fails, should it return
// the nsComboboxControlFrame or null?
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement;
nsresult res = aContent->QueryInterface(NS_GET_IID(nsIDOMHTMLSelectElement),
(void**)getter_AddRefs(selectElement));
if (NS_SUCCEEDED(res) && selectElement) {
nsIComboboxControlFrame * comboboxFrame;
res = frame->QueryInterface(NS_GET_IID(nsIComboboxControlFrame),
(void**)&comboboxFrame);
nsIFrame * listFrame;
if (NS_SUCCEEDED(res) && comboboxFrame) {
comboboxFrame->GetDropDown(&listFrame);
} else {
listFrame = frame;
}
if (listFrame != nsnull) {
nsIListControlFrame * list;
res = listFrame->QueryInterface(NS_GET_IID(nsIListControlFrame),
(void**)&list);
if (NS_SUCCEEDED(res) && list) {
list->GetOptionsContainer(aPresContext, &frame);
}
}
} else {
// If the primary frame is a scroll frame, then get the scrolled frame.
// That's the frame that gets the reflow command
const nsStyleDisplay* display;
frame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&)display);
// If the primary frame supports IScrollableFrame, then get the scrolled frame.
// That's the frame that gets the reflow command
nsIScrollableFrame *pScrollableFrame = nsnull;
if (NS_SUCCEEDED( frame->QueryInterface(nsIScrollableFrame::GetIID(),
(void **)&pScrollableFrame) ))
{
pScrollableFrame->GetScrolledFrame( aPresContext, frame );
}
// if we get an outer table frame use its 1st child which is a table inner frame
// if we get a table cell frame use its 1st child which is an area frame
else if ((NS_STYLE_DISPLAY_TABLE == display->mDisplay) ||
(NS_STYLE_DISPLAY_TABLE_CELL == display->mDisplay)) {
frame->FirstChild(aPresContext, nsnull, &frame);
}
}
}
return frame;
}
nsIFrame*
nsCSSFrameConstructor::GetAbsoluteContainingBlock(nsIPresContext* aPresContext,
nsIFrame* aFrame)
{
NS_PRECONDITION(nsnull != mInitialContainingBlock, "no initial containing block");
// Starting with aFrame, look for a frame that is absolutely positioned or
// relatively positioned
nsIFrame* containingBlock = nsnull;
for (nsIFrame* frame = aFrame; frame; frame->GetParent(&frame)) {
const nsStylePosition* position;
// Is it positioned?
frame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct*&)position);
if ((position->mPosition == NS_STYLE_POSITION_ABSOLUTE) ||
(position->mPosition == NS_STYLE_POSITION_RELATIVE)) {
const nsStyleDisplay* display;
// If it's a table then ignore it, because for the time being tables
// are not containers for absolutely positioned child frames
frame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&)display);
if (display->mDisplay != NS_STYLE_DISPLAY_TABLE) {
nsIAtom* frameType;
frame->GetFrameType(&frameType);
if (nsLayoutAtoms::scrollFrame == frameType) {
// We want the scrolled frame, not the scroll frame
nsIFrame* scrolledFrame;
frame->FirstChild(aPresContext, nsnull, &scrolledFrame);
NS_RELEASE(frameType);
if (scrolledFrame) {
scrolledFrame->GetFrameType(&frameType);
if (nsLayoutAtoms::areaFrame == frameType) {
containingBlock = scrolledFrame;
}
}
} else if ((nsLayoutAtoms::areaFrame == frameType) ||
(nsLayoutAtoms::positionedInlineFrame == frameType)) {
containingBlock = frame;
}
NS_RELEASE(frameType);
}
}
// See if we found a containing block
if (containingBlock) {
break;
}
}
// If we didn't find an absolutely positioned containing block, then use the
// initial containing block
if (!containingBlock) {
containingBlock = mInitialContainingBlock;
}
return containingBlock;
}
nsIFrame*
nsCSSFrameConstructor::GetFloaterContainingBlock(nsIPresContext* aPresContext,
nsIFrame* aFrame)
{
NS_PRECONDITION(mInitialContainingBlock, "no initial containing block");
// Starting with aFrame, look for a frame that is a real block frame,
// or a floated inline or absolutely positioned inline frame
nsIFrame* containingBlock = aFrame;
while (nsnull != containingBlock) {
const nsStyleDisplay* display;
containingBlock->GetStyleData(eStyleStruct_Display,
(const nsStyleStruct*&)display);
if ((NS_STYLE_DISPLAY_BLOCK == display->mDisplay) ||
(NS_STYLE_DISPLAY_LIST_ITEM == display->mDisplay)) {
break;
}
else if (NS_STYLE_DISPLAY_INLINE == display->mDisplay) {
const nsStylePosition* position;
containingBlock->GetStyleData(eStyleStruct_Position,
(const nsStyleStruct*&)position);
if ((NS_STYLE_FLOAT_NONE != display->mFloats) ||
(position->IsAbsolutelyPositioned())) {
if (NS_STYLE_FLOAT_NONE != display->mFloats) {
nsCOMPtr<nsIAtom> frameType;
containingBlock->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::letterFrame != frameType.get()) {
break;
}
}
else {
break;
}
}
}
// Continue walking up the hierarchy
containingBlock->GetParent(&containingBlock);
}
// If we didn't find a containing block, then use the initial
// containing block
if (nsnull == containingBlock) {
containingBlock = mInitialContainingBlock;
}
return containingBlock;
}
// Helper function to determine whether a given frame is generated content
// for the specified content object. Returns PR_TRUE if the frame is associated
// with generated content and PR_FALSE otherwise
static inline PRBool
IsGeneratedContentFor(nsIContent* aContent, nsIFrame* aFrame, nsIAtom* aPseudoElement)
{
NS_PRECONDITION(aFrame, "null frame pointer");
nsFrameState state;
PRBool result = PR_FALSE;
// First check the frame state bit
aFrame->GetFrameState(&state);
if (state & NS_FRAME_GENERATED_CONTENT) {
nsIContent* content;
// Check that it has the same content pointer
aFrame->GetContent(&content);
if (content == aContent) {
nsIStyleContext* styleContext;
nsIAtom* pseudoType;
// See if the pseudo element type matches
aFrame->GetStyleContext(&styleContext);
styleContext->GetPseudoType(pseudoType);
result = (pseudoType == aPseudoElement);
NS_RELEASE(styleContext);
NS_IF_RELEASE(pseudoType);
}
NS_IF_RELEASE(content);
}
return result;
}
// This function is called by ContentAppended() and ContentInserted() when
// appending flowed frames to a parent's principal child list. It handles the
// case where the parent frame has :after pseudo-element generated content
nsresult
nsCSSFrameConstructor::AppendFrames(nsIPresContext* aPresContext,
nsIPresShell* aPresShell,
nsIFrameManager* aFrameManager,
nsIContent* aContainer,
nsIFrame* aParentFrame,
nsIFrame* aFrameList)
{
nsIFrame* firstChild;
aParentFrame->FirstChild(aPresContext, nsnull, &firstChild);
nsFrameList frames(firstChild);
nsIFrame* lastChild = frames.LastChild();
// See if the parent has an :after pseudo-element
if (lastChild && IsGeneratedContentFor(aContainer, lastChild, nsCSSAtoms::afterPseudo)) {
// Insert the frames before the :after pseudo-element
return aFrameManager->InsertFrames(aPresContext, *aPresShell, aParentFrame,
nsnull, frames.GetPrevSiblingFor(lastChild),
aFrameList);
}
nsresult rv = NS_OK;
// a col group or col appended to a table may result in an insert rather than an append
nsIAtom* parentType;
aParentFrame->GetFrameType(&parentType);
if (nsLayoutAtoms::tableFrame == parentType) {
nsTableFrame* tableFrame = (nsTableFrame *)aParentFrame;
nsIAtom* childType;
aFrameList->GetFrameType(&childType);
if (nsLayoutAtoms::tableColFrame == childType) {
// table column
nsIFrame* parentFrame = aParentFrame;
aFrameList->GetParent(&parentFrame);
NS_RELEASE(childType);
rv = aFrameManager->AppendFrames(aPresContext, *aPresShell, parentFrame,
nsLayoutAtoms::colGroupList, aFrameList);
}
else if (nsLayoutAtoms::tableColGroupFrame == childType) {
// table col group
nsIFrame* prevSibling;
PRBool doAppend = nsTableColGroupFrame::GetLastRealColGroup(tableFrame, &prevSibling);
if (doAppend) {
rv = aFrameManager->AppendFrames(aPresContext, *aPresShell, aParentFrame,
nsLayoutAtoms::colGroupList, aFrameList);
}
else {
rv = aFrameManager->InsertFrames(aPresContext, *aPresShell, aParentFrame,
nsLayoutAtoms::colGroupList, prevSibling, aFrameList);
}
}
else if (nsLayoutAtoms::tableCaptionFrame == childType) {
// table caption
rv = aFrameManager->AppendFrames(aPresContext, *aPresShell, aParentFrame,
nsLayoutAtoms::captionList, aFrameList);
}
else {
rv = aFrameManager->AppendFrames(aPresContext, *aPresShell, aParentFrame,
nsnull, aFrameList);
}
NS_IF_RELEASE(childType);
}
else {
// Append the frames to the end of the parent's child list
rv = aFrameManager->AppendFrames(aPresContext, *aPresShell, aParentFrame,
GetChildListFor(aFrameList), aFrameList);
}
NS_IF_RELEASE(parentType);
return rv;
}
static nsIFrame*
FindPreviousSibling(nsIPresShell* aPresShell,
nsIContent* aContainer,
PRInt32 aIndexInContainer)
{
nsIFrame* prevSibling = nsnull;
// Note: not all content objects are associated with a frame (e.g., if their
// 'display' type is 'hidden') so keep looking until we find a previous frame
for (PRInt32 i = aIndexInContainer - 1; i >= 0; i--) {
nsCOMPtr<nsIContent> precedingContent;
aContainer->ChildAt(i, *getter_AddRefs(precedingContent));
aPresShell->GetPrimaryFrameFor(precedingContent, &prevSibling);
if (nsnull != prevSibling) {
// The frame may have a next-in-flow. Get the last-in-flow
nsIFrame* nextInFlow;
do {
prevSibling->GetNextInFlow(&nextInFlow);
if (nsnull != nextInFlow) {
prevSibling = nextInFlow;
}
} while (nsnull != nextInFlow);
// Did we really get the *right* frame?
const nsStyleDisplay* display;
prevSibling->GetStyleData(eStyleStruct_Display,
(const nsStyleStruct*&)display);
if (display->IsFloating()) {
// Nope. Get the place-holder instead
nsIFrame* placeholderFrame;
aPresShell->GetPlaceholderFrameFor(prevSibling, &placeholderFrame);
NS_ASSERTION(nsnull != placeholderFrame, "yikes");
prevSibling = placeholderFrame;
}
break;
}
}
return prevSibling;
}
static nsIFrame*
FindNextSibling(nsIPresShell* aPresShell,
nsIContent* aContainer,
PRInt32 aIndexInContainer)
{
nsIFrame* nextSibling = nsnull;
// Note: not all content objects are associated with a frame (e.g., if their
// 'display' type is 'hidden') so keep looking until we find a previous frame
PRInt32 count;
aContainer->ChildCount(count);
for (PRInt32 i = aIndexInContainer + 1; i < count; i++) {
nsCOMPtr<nsIContent> nextContent;
aContainer->ChildAt(i, *getter_AddRefs(nextContent));
aPresShell->GetPrimaryFrameFor(nextContent, &nextSibling);
if (nsnull != nextSibling) {
// The frame may have a next-in-flow. Get the first-in-flow
nsIFrame* prevInFlow;
do {
nextSibling->GetPrevInFlow(&prevInFlow);
if (nsnull != prevInFlow) {
nextSibling = prevInFlow;
}
} while (nsnull != prevInFlow);
// Did we really get the *right* frame?
const nsStyleDisplay* display;
nextSibling->GetStyleData(eStyleStruct_Display,
(const nsStyleStruct*&)display);
if (display->IsFloating()) {
// Nope. Get the place-holder instead
nsIFrame* placeholderFrame;
aPresShell->GetPlaceholderFrameFor(nextSibling, &placeholderFrame);
NS_ASSERTION(nsnull != placeholderFrame, "yikes");
nextSibling = placeholderFrame;
}
break;
}
}
return nextSibling;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ContentAppended(nsIPresContext* aPresContext,
nsIContent* aContainer,
PRInt32 aNewIndexInContainer)
{
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ContentAppended container=%p index=%d\n",
aContainer, aNewIndexInContainer);
if (gReallyNoisyContentUpdates && aContainer) {
aContainer->List(stdout, 0);
}
}
#endif
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
#ifdef INCLUDE_XUL
if (aContainer) {
nsCOMPtr<nsIAtom> tag;
aContainer->GetTag(*getter_AddRefs(tag));
if (tag && (tag.get() == nsXULAtoms::treechildren ||
tag.get() == nsXULAtoms::treeitem)) {
// Walk up to the outermost tree row group frame and tell it that
// content was added.
nsCOMPtr<nsIContent> parent;
nsCOMPtr<nsIContent> child = dont_QueryInterface(aContainer);
child->GetParent(*getter_AddRefs(parent));
while (parent) {
parent->GetTag(*getter_AddRefs(tag));
if (tag.get() == nsXULAtoms::tree)
break;
child = parent;
child->GetParent(*getter_AddRefs(parent));
}
if (parent) {
// We found it. Get the primary frame.
nsIFrame* outerFrame = GetFrameFor(shell, aPresContext, child);
// Convert to a tree row group frame.
nsTreeRowGroupFrame* treeRowGroup = (nsTreeRowGroupFrame*)outerFrame;
if (treeRowGroup) {
// Get the primary frame for the parent of the child that's being added.
nsIFrame* innerFrame = GetFrameFor(shell, aPresContext, aContainer);
// See if there's a previous sibling.
nsIFrame* prevSibling = FindPreviousSibling(shell,
aContainer,
aNewIndexInContainer);
// This needs to really be a previous sibling.
if (prevSibling && aNewIndexInContainer > 0) {
nsCOMPtr<nsIContent> prevContent;
nsCOMPtr<nsIContent> frameContent;
aContainer->ChildAt(aNewIndexInContainer-1, *getter_AddRefs(prevContent));
prevSibling->GetContent(getter_AddRefs(frameContent));
if (frameContent.get() != prevContent.get())
prevSibling = nsnull;
}
if (prevSibling || (innerFrame && aNewIndexInContainer == 0)) {
// We're onscreen. Make sure a full reflow happens.
treeRowGroup->OnContentAdded(aPresContext);
}
else {
// We're going to be offscreen.
treeRowGroup->ReflowScrollbar(aPresContext);
}
return NS_OK;
}
}
}
}
#endif // INCLUDE_XUL
// Get the frame associated with the content
nsIFrame* parentFrame = GetFrameFor(shell, aPresContext, aContainer);
if (nsnull != parentFrame) {
// If the frame we are manipulating is a special frame then do
// something different instead of just appending newly created
// frames. Note that only the first-in-flow is marked so we check
// before getting to the last-in-flow.
if (IsFrameSpecial(aPresContext, parentFrame)) {
// We are pretty harsh here (and definitely not optimal) -- we
// wipe out the entire containing block and recreate it from
// scratch. The reason is that because we know that a special
// inline frame has propogated some of its children upward to be
// children of the block and that those frames may need to move
// around. This logic guarantees a correct answer.
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ContentAppended: parentFrame=");
nsFrame::ListTag(stdout, parentFrame);
printf(" is special\n");
}
#endif
return ReframeContainingBlock(aPresContext, parentFrame);
}
// Get the parent frame's last-in-flow
nsIFrame* nextInFlow = parentFrame;
while (nsnull != nextInFlow) {
parentFrame->GetNextInFlow(&nextInFlow);
if (nsnull != nextInFlow) {
parentFrame = nextInFlow;
}
}
// If we didn't process children when we originally created the frame,
// then don't do any processing now
nsCOMPtr<nsIAtom> frameType;
parentFrame->GetFrameType(getter_AddRefs(frameType));
if (frameType.get() == nsLayoutAtoms::objectFrame) {
// This handles APPLET, EMBED, and OBJECT
return NS_OK;
}
// Create some new frames
PRInt32 count;
nsIFrame* firstAppendedFrame = nsnull;
nsFrameItems frameItems;
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
GetAbsoluteContainingBlock(aPresContext, parentFrame),
GetFloaterContainingBlock(aPresContext, parentFrame),
nsnull);
// See if the containing block has :first-letter style applied.
PRBool haveFirstLetterStyle, haveFirstLineStyle;
nsIFrame* containingBlock = state.mFloatedItems.containingBlock;
nsCOMPtr<nsIContent> blockContent;
nsCOMPtr<nsIStyleContext> blockSC;
containingBlock->GetStyleContext(getter_AddRefs(blockSC));
containingBlock->GetContent(getter_AddRefs(blockContent));
HaveSpecialBlockStyle(aPresContext, blockContent, blockSC,
&haveFirstLetterStyle,
&haveFirstLineStyle);
if (haveFirstLetterStyle) {
// Before we get going, remove the current letter frames
RemoveLetterFrames(aPresContext, state.mPresShell,
state.mFrameManager, containingBlock);
}
PRInt32 i;
aContainer->ChildCount(count);
for (i = aNewIndexInContainer; i < count; i++) {
nsCOMPtr<nsIContent> childContent;
aContainer->ChildAt(i, *getter_AddRefs(childContent));
// Construct a child frame
ConstructFrame(shell, aPresContext, state, childContent, parentFrame, frameItems);
}
if (haveFirstLineStyle) {
// It's possible that some of the new frames go into a
// first-line frame. Look at them and see...
AppendFirstLineFrames(shell, aPresContext, state, aContainer, parentFrame,
frameItems);
}
// Adjust parent frame for table inner/outer frame. We need to do
// this here because we need both the parent frame and the
// constructed frame
nsresult result = NS_OK;
nsIFrame* adjustedParentFrame = parentFrame;
firstAppendedFrame = frameItems.childList;
if (nsnull != firstAppendedFrame) {
const nsStyleDisplay* firstAppendedFrameDisplay;
firstAppendedFrame->GetStyleData(eStyleStruct_Display,
(const nsStyleStruct *&)firstAppendedFrameDisplay);
result = GetAdjustedParentFrame(aPresContext, parentFrame,
firstAppendedFrameDisplay->mDisplay,
adjustedParentFrame);
}
// Notify the parent frame passing it the list of new frames
if (NS_SUCCEEDED(result) && firstAppendedFrame) {
// Perform special check for diddling around with the frames in
// a special inline frame.
// XXX Bug 18366
// Although select frame are inline we do not want to call
// WipeContainingBlock because it will throw away the entire selct frame and
// start over which is something we do not want to do
//
nsCOMPtr<nsIDOMHTMLSelectElement> selectContent(do_QueryInterface(aContainer));
if (!selectContent) {
if (WipeContainingBlock(aPresContext, state, blockContent, adjustedParentFrame,
frameItems.childList)) {
return NS_OK;
}
}
// Append the flowed frames to the principal child list
AppendFrames(aPresContext, shell, state.mFrameManager, aContainer,
adjustedParentFrame, firstAppendedFrame);
// If there are new absolutely positioned child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mAbsoluteItems.childList) {
state.mAbsoluteItems.containingBlock->AppendFrames(aPresContext, *shell,
nsLayoutAtoms::absoluteList,
state.mAbsoluteItems.childList);
}
// If there are new fixed positioned child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mFixedItems.childList) {
state.mFixedItems.containingBlock->AppendFrames(aPresContext, *shell,
nsLayoutAtoms::fixedList,
state.mFixedItems.childList);
}
// If there are new floating child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mFloatedItems.childList) {
state.mFloatedItems.containingBlock->AppendFrames(aPresContext, *shell,
nsLayoutAtoms::floaterList,
state.mFloatedItems.childList);
}
// Recover first-letter frames
if (haveFirstLetterStyle) {
RecoverLetterFrames(shell, aPresContext, state, containingBlock);
}
}
// Here we have been notified that content has been appended so if
// the select now has a single item we need to go in and removed
// the dummy frame.
nsCOMPtr<nsIDOMHTMLSelectElement> sel(do_QueryInterface(aContainer));
if (sel) {
nsCOMPtr<nsIContent> childContent;
aContainer->ChildAt(aNewIndexInContainer, *getter_AddRefs(childContent));
if (childContent) {
RemoveDummyFrameFromSelect(aPresContext, shell, aContainer,
childContent, sel);
}
}
}
return NS_OK;
}
nsresult
nsCSSFrameConstructor::RemoveDummyFrameFromSelect(nsIPresContext* aPresContext,
nsIPresShell * aPresShell,
nsIContent* aContainer,
nsIContent* aChild,
nsIDOMHTMLSelectElement * aSelectElement)
{
//check to see if there is one item,
// meaning we need to remove the dummy frame
PRUint32 numOptions = 0;
nsresult result = aSelectElement->GetLength(&numOptions);
if (NS_SUCCEEDED(result)) {
if (1 == numOptions) {
nsIFrame* parentFrame;
nsIFrame* childFrame;
// Get the childFrame for the added child (option)
// then get the child's parent frame which should be an area frame
aPresShell->GetPrimaryFrameFor(aChild, &childFrame);
if (nsnull != childFrame) {
childFrame->GetParent(&parentFrame);
// Now loop through all the child looking fr the frame whose content
// is equal to the select element's content
// this is because when gernated content is created it stuff the parent content
// pointer into the generated frame, so in this case it has the select content
parentFrame->FirstChild(aPresContext, nsnull, &childFrame);
nsCOMPtr<nsIContent> selectContent = do_QueryInterface(aSelectElement);
while (nsnull != childFrame) {
nsIContent * content;
childFrame->GetContent(&content);
// Found the dummy frame so get the FrameManager and
// delete/remove the dummy frame
if (selectContent.get() == content) {
nsCOMPtr<nsIFrameManager> frameManager;
aPresShell->GetFrameManager(getter_AddRefs(frameManager));
frameManager->RemoveFrame(aPresContext, *aPresShell, parentFrame, nsnull, childFrame);
NS_IF_RELEASE(content);
return NS_OK;
}
NS_IF_RELEASE(content);
childFrame->GetNextSibling(&childFrame);
}
}
}
}
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ContentInserted(nsIPresContext* aPresContext,
nsIContent* aContainer,
nsIContent* aChild,
PRInt32 aIndexInContainer,
nsILayoutHistoryState* aFrameState)
{
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ContentInserted container=%p child=%p index=%d\n",
aContainer, aChild, aIndexInContainer);
if (gReallyNoisyContentUpdates) {
(aContainer ? aContainer : aChild)->List(stdout, 0);
}
}
#endif
#ifdef INCLUDE_XUL
if (aContainer) {
nsCOMPtr<nsIAtom> tag;
aContainer->GetTag(*getter_AddRefs(tag));
if (tag && (tag.get() == nsXULAtoms::treechildren ||
tag.get() == nsXULAtoms::treeitem)) {
// Walk up to the outermost tree row group frame and tell it that
// content was added.
nsCOMPtr<nsIContent> parent;
nsCOMPtr<nsIContent> child = dont_QueryInterface(aContainer);
child->GetParent(*getter_AddRefs(parent));
while (parent) {
parent->GetTag(*getter_AddRefs(tag));
if (tag.get() == nsXULAtoms::tree)
break;
child = parent;
child->GetParent(*getter_AddRefs(parent));
}
if (parent) {
// We found it. Get the primary frame.
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsIFrame* outerFrame = GetFrameFor(shell, aPresContext, child);
// Convert to a tree row group frame.
nsTreeRowGroupFrame* treeRowGroup = (nsTreeRowGroupFrame*)outerFrame;
if (treeRowGroup) {
// Get the primary frame for the parent of the child that's being added.
nsIFrame* innerFrame = GetFrameFor(shell, aPresContext, aContainer);
// See if there's a previous sibling.
nsIFrame* prevSibling = FindPreviousSibling(shell,
aContainer,
aIndexInContainer);
if (prevSibling || innerFrame) {
// We're onscreen, but because of the fact that we can be called to
// "kill" a displayed frame (e.g., when you close a tree node), we
// have to see if this slaying is taking place. If so, then we don't
// really want to do anything. Instead we need to add our node to
// the undisplayed content list so that the style system will know
// to check it for subsequent display changes (e.g., when you next
// reopen).
nsCOMPtr<nsIStyleContext> styleContext;
nsCOMPtr<nsIAtom> tagName;
aChild->GetTag(*getter_AddRefs(tagName));
ResolveStyleContext(aPresContext, innerFrame, aChild, tagName, getter_AddRefs(styleContext));
// Pre-check for display "none" - if we find that, don't reflow at all.
const nsStyleDisplay* display = (const nsStyleDisplay*)
styleContext->GetStyleData(eStyleStruct_Display);
if (NS_STYLE_DISPLAY_NONE == display->mDisplay) {
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
GetAbsoluteContainingBlock(aPresContext, innerFrame),
GetFloaterContainingBlock(aPresContext, innerFrame),
aFrameState);
state.mFrameManager->SetUndisplayedContent(aChild, styleContext);
return NS_OK;
}
// Good call. Make sure a full reflow happens.
nsIFrame* nextSibling = FindNextSibling(shell, aContainer, aIndexInContainer);
if(!nextSibling)
treeRowGroup->OnContentAdded(aPresContext);
else {
nsIFrame* frame = GetFrameFor(shell, aPresContext, aContainer);
nsTreeRowGroupFrame* frameTreeRowGroup = (nsTreeRowGroupFrame*)frame;
if(frameTreeRowGroup)
frameTreeRowGroup->OnContentInserted(aPresContext, nextSibling, aIndexInContainer);
}
}
else {
// We're going to be offscreen.
treeRowGroup->ReflowScrollbar(aPresContext);
}
return NS_OK;
}
}
}
}
#endif // INCLUDE_XUL
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsresult rv = NS_OK;
// If we have a null parent, then this must be the document element
// being inserted
if (nsnull == aContainer) {
NS_PRECONDITION(nsnull == mInitialContainingBlock, "initial containing block already created");
nsIContent* docElement = mDocument->GetRootContent();
// Get the style context of the containing block frame
nsCOMPtr<nsIStyleContext> containerStyle;
mDocElementContainingBlock->GetStyleContext(getter_AddRefs(containerStyle));
// Create frames for the document element and its child elements
nsIFrame* docElementFrame;
nsFrameConstructorState state(aPresContext, mFixedContainingBlock, nsnull, nsnull, aFrameState);
ConstructDocElementFrame(shell, aPresContext,
state,
docElement,
mDocElementContainingBlock,
containerStyle,
docElementFrame);
NS_IF_RELEASE(docElement);
// Set the initial child list for the parent
mDocElementContainingBlock->SetInitialChildList(aPresContext,
nsnull,
docElementFrame);
// Tell the fixed containing block about its 'fixed' frames
if (state.mFixedItems.childList) {
mFixedContainingBlock->SetInitialChildList(aPresContext,
nsLayoutAtoms::fixedList,
state.mFixedItems.childList);
}
} else {
// Find the frame that precedes the insertion point.
nsIFrame* prevSibling = FindPreviousSibling(shell, aContainer, aIndexInContainer);
nsIFrame* nextSibling = nsnull;
PRBool isAppend = PR_FALSE;
// If there is no previous sibling, then find the frame that follows
if (nsnull == prevSibling) {
nextSibling = FindNextSibling(shell, aContainer, aIndexInContainer);
}
// Get the geometric parent. Use the prev sibling if we have it;
// otherwise use the next sibling
nsIFrame* parentFrame;
if (nsnull != prevSibling) {
prevSibling->GetParent(&parentFrame);
}
else if (nextSibling) {
nextSibling->GetParent(&parentFrame);
}
else {
// No previous or next sibling so treat this like an appended frame.
isAppend = PR_TRUE;
parentFrame = GetFrameFor(shell, aPresContext, aContainer);
if (parentFrame) {
// If we didn't process children when we originally created the frame,
// then don't do any processing now
nsCOMPtr<nsIAtom> frameType;
parentFrame->GetFrameType(getter_AddRefs(frameType));
if (frameType.get() == nsLayoutAtoms::objectFrame) {
// This handles APPLET, EMBED, and OBJECT
return NS_OK;
}
}
}
// Construct a new frame
if (nsnull != parentFrame) {
// If the frame we are manipulating is a special frame then do
// something different instead of just inserting newly created
// frames.
if (IsFrameSpecial(aPresContext, parentFrame)) {
// We are pretty harsh here (and definitely not optimal) -- we
// wipe out the entire containing block and recreate it from
// scratch. The reason is that because we know that a special
// inline frame has propogated some of its children upward to be
// children of the block and that those frames may need to move
// around. This logic guarantees a correct answer.
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ContentInserted: parentFrame=");
nsFrame::ListTag(stdout, parentFrame);
printf(" is special\n");
}
#endif
return ReframeContainingBlock(aPresContext, parentFrame);
}
nsFrameItems frameItems;
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
GetAbsoluteContainingBlock(aPresContext, parentFrame),
GetFloaterContainingBlock(aPresContext, parentFrame),
aFrameState);
// Recover state for the containing block - we need to know if
// it has :first-letter or :first-line style applied to it. The
// reason we care is that the internal structure in these cases
// is not the normal structure and requires custom updating
// logic.
nsIFrame* containingBlock = state.mFloatedItems.containingBlock;
nsCOMPtr<nsIStyleContext> blockSC;
nsCOMPtr<nsIContent> blockContent;
PRBool haveFirstLetterStyle = PR_FALSE;
PRBool haveFirstLineStyle = PR_FALSE;
// In order to shave off some cycles, we only dig up the
// containing block haveFirst* flags if the parent frame where
// the insertion/append is occuring is an inline or block
// container. For other types of containers this isn't relevant.
const nsStyleDisplay* parentDisplay;
parentFrame->GetStyleData(eStyleStruct_Display,
(const nsStyleStruct*&)parentDisplay);
// Examine the parentFrame where the insertion is taking
// place. If its a certain kind of container then some special
// processing is done.
if ((NS_STYLE_DISPLAY_BLOCK == parentDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_LIST_ITEM == parentDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_INLINE == parentDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_INLINE_BLOCK == parentDisplay->mDisplay)) {
// Recover the special style flags for the containing block
containingBlock->GetStyleContext(getter_AddRefs(blockSC));
containingBlock->GetContent(getter_AddRefs(blockContent));
HaveSpecialBlockStyle(aPresContext, blockContent, blockSC,
&haveFirstLetterStyle,
&haveFirstLineStyle);
if (haveFirstLetterStyle) {
// Get the correct parentFrame and prevSibling - if a
// letter-frame is present, use its parent.
nsCOMPtr<nsIAtom> parentFrameType;
parentFrame->GetFrameType(getter_AddRefs(parentFrameType));
if (parentFrameType.get() == nsLayoutAtoms::letterFrame) {
if (prevSibling) {
prevSibling = parentFrame;
}
parentFrame->GetParent(&parentFrame);
}
// Remove the old letter frames before doing the insertion
RemoveLetterFrames(aPresContext, state.mPresShell,
state.mFrameManager,
state.mFloatedItems.containingBlock);
}
}
// If the frame we are manipulating is a special inline frame
// then do something different instead of just inserting newly
// created frames.
if (IsFrameSpecial(state.mFrameManager, parentFrame)) {
// We are pretty harsh here (and definitely not optimal) -- we
// wipe out the entire containing block and recreate it from
// scratch. The reason is that because we know that a special
// inline frame has propogated some of its children upward to be
// children of the block and that those frames may need to move
// around. This logic guarantees a correct answer.
nsCOMPtr<nsIContent> parentContainer;
blockContent->GetParent(*getter_AddRefs(parentContainer));
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ContentInserted: parentFrame=");
nsFrame::ListTag(stdout, parentFrame);
printf(" is special inline\n");
printf(" ==> blockContent=%p, parentContainer=%p\n",
blockContent.get(), parentContainer.get());
}
#endif
if (parentContainer) {
PRInt32 ix;
parentContainer->IndexOf(blockContent, ix);
ContentReplaced(aPresContext, parentContainer, blockContent, blockContent, ix);
}
else {
// XXX uh oh. the block that needs reworking has no parent...
}
return NS_OK;
}
rv = ConstructFrame(shell, aPresContext, state, aChild, parentFrame, frameItems);
// XXX Bug 19949
// Although select frame are inline we do not want to call
// WipeContainingBlock because it will throw away the entire select frame and
// start over which is something we do not want to do
//
nsCOMPtr<nsIDOMHTMLSelectElement> selectContent(do_QueryInterface(aContainer));
if (!selectContent) {
// Perform special check for diddling around with the frames in
// a special inline frame.
if (WipeContainingBlock(aPresContext, state, blockContent, parentFrame, frameItems.childList)) {
return NS_OK;
}
}
if (haveFirstLineStyle) {
// It's possible that the new frame goes into a first-line
// frame. Look at it and see...
if (isAppend) {
// Use append logic when appending
AppendFirstLineFrames(shell, aPresContext, state, aContainer, parentFrame,
frameItems);
}
else {
// Use more complicated insert logic when inserting
InsertFirstLineFrames(aPresContext, state, aContainer,
containingBlock, &parentFrame,
prevSibling, frameItems);
}
}
nsIFrame* newFrame = frameItems.childList;
if (NS_SUCCEEDED(rv) && (nsnull != newFrame)) {
// Notify the parent frame
if (isAppend) {
rv = AppendFrames(aPresContext, shell, state.mFrameManager,
aContainer, parentFrame, newFrame);
} else {
if (!prevSibling) {
// We're inserting the new frame as the first child. See if the
// parent has a :before pseudo-element
nsIFrame* firstChild;
parentFrame->FirstChild(aPresContext, nsnull, &firstChild);
if (firstChild && IsGeneratedContentFor(aContainer, firstChild, nsCSSAtoms::beforePseudo)) {
// Insert the new frames after the :before pseudo-element
prevSibling = firstChild;
}
}
// check for a table caption which goes on an additional child list
nsIAtom* childList = GetChildListFor(newFrame);
rv = state.mFrameManager->InsertFrames(aPresContext, *shell,
parentFrame,
childList, prevSibling,
newFrame);
}
// If there are new absolutely positioned child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mAbsoluteItems.childList) {
rv = state.mAbsoluteItems.containingBlock->AppendFrames(aPresContext, *shell,
nsLayoutAtoms::absoluteList,
state.mAbsoluteItems.childList);
}
// If there are new fixed positioned child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mFixedItems.childList) {
rv = state.mFixedItems.containingBlock->AppendFrames(aPresContext, *shell,
nsLayoutAtoms::fixedList,
state.mFixedItems.childList);
}
// If there are new floating child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mFloatedItems.childList) {
rv = state.mFloatedItems.containingBlock->AppendFrames(aPresContext, *shell,
nsLayoutAtoms::floaterList,
state.mFloatedItems.childList);
}
if (haveFirstLetterStyle) {
// Recover the letter frames for the containing block when
// it has first-letter style.
RecoverLetterFrames(shell, aPresContext, state,
state.mFloatedItems.containingBlock);
}
}
}
// Here we have been notified that content has been insert
// so if the select now has a single item
// we need to go in and removed the dummy frame
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement;
nsresult result = aContainer->QueryInterface(NS_GET_IID(nsIDOMHTMLSelectElement),
(void**)getter_AddRefs(selectElement));
if (NS_SUCCEEDED(result) && selectElement) {
RemoveDummyFrameFromSelect(aPresContext, shell, aContainer, aChild, selectElement);
}
}
return rv;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ContentReplaced(nsIPresContext* aPresContext,
nsIContent* aContainer,
nsIContent* aOldChild,
nsIContent* aNewChild,
PRInt32 aIndexInContainer)
{
// XXX For now, do a brute force remove and insert.
nsresult res = ContentRemoved(aPresContext, aContainer,
aOldChild, aIndexInContainer);
if (NS_OK == res) {
res = ContentInserted(aPresContext, aContainer,
aNewChild, aIndexInContainer, nsnull);
}
return res;
}
// Returns PR_TRUE if aAncestorFrame is an ancestor frame of aFrame
static PRBool
IsAncestorFrame(nsIFrame* aFrame, nsIFrame* aAncestorFrame)
{
nsIFrame* parentFrame;
aFrame->GetParent(&parentFrame);
while (parentFrame) {
if (parentFrame == aAncestorFrame) {
return PR_TRUE;
}
parentFrame->GetParent(&parentFrame);
}
return PR_FALSE;
}
/**
* Called to delete a frame subtree. Two important things happen:
* 1. for each frame in the subtree we remove the mapping from the
* content object to its frame
* 2. for child frames that have been moved out of the flow we delete
* the out-of-flow frame as well
*
* Note: this function should only be called by DeletingFrameSubtree()
*
* @param aRemovedFrame this is the frame that was removed from the
* content model. As we recurse we need to remember this so we
* can check if out-of-flow frames are a descendent of the frame
* being removed
* @param aFrame the local subtree that is being deleted. This is initially
* the same as aRemovedFrame, but as we recurse down the tree
* this changes
*/
static nsresult
DoDeletingFrameSubtree(nsIPresContext* aPresContext,
nsIPresShell* aPresShell,
nsIFrameManager* aFrameManager,
nsIFrame* aRemovedFrame,
nsIFrame* aFrame)
{
NS_PRECONDITION(aFrameManager, "no frame manager");
// Remove the mapping from the content object to its frame
nsCOMPtr<nsIContent> content;
aFrame->GetContent(getter_AddRefs(content));
aFrameManager->SetPrimaryFrameFor(content, nsnull);
aFrameManager->ClearAllUndisplayedContentIn(content);
// Walk aFrame's child frames
nsIAtom* childListName = nsnull;
PRInt32 childListIndex = 0;
do {
// Recursively walk aFrame's child frames looking for placeholder frames
nsIFrame* childFrame;
aFrame->FirstChild(aPresContext, childListName, &childFrame);
while (childFrame) {
nsIAtom* frameType;
PRBool isPlaceholder;
// See if it's a placeholder frame
childFrame->GetFrameType(&frameType);
isPlaceholder = (nsLayoutAtoms::placeholderFrame == frameType);
NS_IF_RELEASE(frameType);
if (isPlaceholder) {
// Get the out-of-flow frame
nsIFrame* outOfFlowFrame = ((nsPlaceholderFrame*)childFrame)->GetOutOfFlowFrame();
NS_ASSERTION(outOfFlowFrame, "no out-of-flow frame");
// Remove the mapping from the out-of-flow frame to its placeholder
aFrameManager->SetPlaceholderFrameFor(outOfFlowFrame, nsnull);
// Recursively find and delete any of its out-of-flow frames, and remove
// the mapping from content objects to frames
DoDeletingFrameSubtree(aPresContext, aPresShell, aFrameManager, aRemovedFrame,
outOfFlowFrame);
// Don't delete the out-of-flow frame if aRemovedFrame is one of its
// ancestor frames, because when aRemovedFrame is deleted it will delete
// its child frames including this out-of-flow frame
if (!IsAncestorFrame(outOfFlowFrame, aRemovedFrame)) {
// Get the out-of-flow frame's parent
nsIFrame* parentFrame;
outOfFlowFrame->GetParent(&parentFrame);
// Get the child list name for the out-of-flow frame
nsIAtom* listName;
GetChildListNameFor(aPresContext, parentFrame, outOfFlowFrame, &listName);
// Ask the parent to delete the out-of-flow frame
aFrameManager->RemoveFrame(aPresContext, *aPresShell, parentFrame,
listName, outOfFlowFrame);
NS_IF_RELEASE(listName);
}
} else {
// Recursively find and delete any of its out-of-flow frames, and remove
// the mapping from content objects to frames
DoDeletingFrameSubtree(aPresContext, aPresShell, aFrameManager, aRemovedFrame,
childFrame);
}
// Get the next sibling child frame
childFrame->GetNextSibling(&childFrame);
}
// Look for any additional named child lists
NS_IF_RELEASE(childListName);
aFrame->GetAdditionalChildListName(childListIndex++, &childListName);
} while (childListName);
return NS_OK;
}
/**
* Called to delete a frame subtree. Calls DoDeletingFrameSubtree()
* for aFrame and each of its continuing frames
*/
static nsresult
DeletingFrameSubtree(nsIPresContext* aPresContext,
nsIPresShell* aPresShell,
nsIFrameManager* aFrameManager,
nsIFrame* aFrame)
{
// If there's no frame manager it's probably because the pres shell is
// being destroyed
if (aFrameManager) {
while (aFrame) {
DoDeletingFrameSubtree(aPresContext, aPresShell, aFrameManager,
aFrame, aFrame);
// If it's split, then get the continuing frame. Note that we only do
// this for the top-most frame being deleted. Don't do it if we're
// recursing over a subtree, because those continuing frames should be
// found as part of the walk over the top-most frame's continuing frames.
// Walking them again will make this an N^2/2 algorithm
aFrame->GetNextInFlow(&aFrame);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsCSSFrameConstructor::RemoveMappingsForFrameSubtree(nsIPresContext* aPresContext,
nsIFrame* aRemovedFrame,
nsILayoutHistoryState* aFrameState)
{
nsCOMPtr<nsIPresShell> presShell;
aPresContext->GetShell(getter_AddRefs(presShell));
nsCOMPtr<nsIFrameManager> frameManager;
presShell->GetFrameManager(getter_AddRefs(frameManager));
// Save the frame tree's state before deleting it
CaptureStateFor(aPresContext, aRemovedFrame, mTempFrameTreeState);
return DeletingFrameSubtree(aPresContext, presShell, frameManager, aRemovedFrame);
}
NS_IMETHODIMP
nsCSSFrameConstructor::ContentRemoved(nsIPresContext* aPresContext,
nsIContent* aContainer,
nsIContent* aChild,
PRInt32 aIndexInContainer)
{
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ContentRemoved container=%p child=%p index=%d\n",
aContainer, aChild, aIndexInContainer);
if (gReallyNoisyContentUpdates) {
aContainer->List(stdout, 0);
}
}
#endif
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsCOMPtr<nsIFrameManager> frameManager;
shell->GetFrameManager(getter_AddRefs(frameManager));
nsresult rv = NS_OK;
// Find the child frame that maps the content
nsIFrame* childFrame;
shell->GetPrimaryFrameFor(aChild, &childFrame);
if (! childFrame) {
frameManager->ClearUndisplayedContentIn(aChild, aContainer);
}
// When the last item is removed from a select,
// we need to add a pseudo frame so select gets sized as the best it can
// so here we see if it is a select and then we get the number of options
nsresult result = NS_ERROR_FAILURE;
if (aContainer && childFrame) {
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement;
result = aContainer->QueryInterface(NS_GET_IID(nsIDOMHTMLSelectElement),
(void**)getter_AddRefs(selectElement));
if (NS_SUCCEEDED(result) && selectElement) {
PRUint32 numOptions = 0;
result = selectElement->GetLength(&numOptions);
nsIFrame * selectFrame; // XXX temp needed only native controls
shell->GetPrimaryFrameFor(aContainer, &selectFrame);// XXX temp needed only native controls
// For "select" add the pseudo frame after the last item is deleted
nsIFrame* parentFrame = nsnull;
childFrame->GetParent(&parentFrame);
if (parentFrame == selectFrame) { // XXX temp needed only native controls
return NS_ERROR_FAILURE;
}
if (NS_SUCCEEDED(result) && shell && parentFrame && 1 == numOptions) {
nsIStyleContext* styleContext = nsnull;
nsIFrame* generatedFrame = nsnull;
nsFrameConstructorState state(aPresContext, nsnull, nsnull, nsnull, nsnull);
//shell->GetPrimaryFrameFor(aContainer, &contentFrame);
parentFrame->GetStyleContext(&styleContext);
if (CreateGeneratedContentFrame(shell, aPresContext, state, parentFrame, aContainer,
styleContext, nsLayoutAtoms::dummyOptionPseudo,
PR_FALSE, &generatedFrame)) {
// Add the generated frame to the child list
frameManager->AppendFrames(aPresContext, *shell, parentFrame, nsnull, generatedFrame);
}
}
}
}
#ifdef INCLUDE_XUL
if (aContainer) {
nsCOMPtr<nsIAtom> tag;
aContainer->GetTag(*getter_AddRefs(tag));
if (tag.get() == nsXULAtoms::treechildren ||
tag.get() == nsXULAtoms::treeitem) {
if (childFrame) {
// Convert to a tree row group frame.
nsIFrame* parentFrame;
childFrame->GetParent(&parentFrame);
nsTreeRowGroupFrame* treeRowGroup = (nsTreeRowGroupFrame*)parentFrame;
if (treeRowGroup) {
treeRowGroup->OnContentRemoved(aPresContext, childFrame, aIndexInContainer);
return NS_OK;
}
}
else {
// Ensure that we notify the outermost row group that the item
// has been removed (so that we can update the scrollbar state).
// Walk up to the outermost tree row group frame and tell it that
// the scrollbar thumb should be updated.
nsCOMPtr<nsIContent> parent;
nsCOMPtr<nsIContent> child = dont_QueryInterface(aContainer);
child->GetParent(*getter_AddRefs(parent));
while (parent) {
parent->GetTag(*getter_AddRefs(tag));
if (tag.get() == nsXULAtoms::tree)
break;
child = parent;
child->GetParent(*getter_AddRefs(parent));
}
if (parent) {
// We found it. Get the primary frame.
nsIFrame* parentFrame = GetFrameFor(shell, aPresContext, child);
// Convert to a tree row group frame.
nsTreeRowGroupFrame* treeRowGroup = (nsTreeRowGroupFrame*)parentFrame;
if (treeRowGroup) {
treeRowGroup->ReflowScrollbar(aPresContext);
return NS_OK;
}
}
}
}
}
#endif // INCLUDE_XUL
if (childFrame) {
// Get the childFrame's parent frame
nsIFrame* parentFrame;
childFrame->GetParent(&parentFrame);
// If the frame we are manipulating is a special frame then do
// something different instead of just inserting newly created
// frames.
if (IsFrameSpecial(aPresContext, parentFrame)) {
// We are pretty harsh here (and definitely not optimal) -- we
// wipe out the entire containing block and recreate it from
// scratch. The reason is that because we know that a special
// inline frame has propogated some of its children upward to be
// children of the block and that those frames may need to move
// around. This logic guarantees a correct answer.
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ContentRemoved: parentFrame=");
nsFrame::ListTag(stdout, parentFrame);
printf(" is special\n");
}
#endif
return ReframeContainingBlock(aPresContext, parentFrame);
}
// Examine the containing-block for the removed content and see if
// :first-letter style applies.
nsIFrame* containingBlock =
GetFloaterContainingBlock(aPresContext, parentFrame);
nsCOMPtr<nsIStyleContext> blockSC;
containingBlock->GetStyleContext(getter_AddRefs(blockSC));
nsCOMPtr<nsIContent> blockContent;
containingBlock->GetContent(getter_AddRefs(blockContent));
PRBool haveFLS = HaveFirstLetterStyle(aPresContext, blockContent, blockSC);
if (haveFLS) {
// Trap out to special routine that handles adjusting a blocks
// frame tree when first-letter style is present.
#ifdef NOISY_FIRST_LETTER
printf("ContentRemoved: containingBlock=");
nsFrame::ListTag(stdout, containingBlock);
printf(" parentFrame=");
nsFrame::ListTag(stdout, parentFrame);
printf(" childFrame=");
nsFrame::ListTag(stdout, childFrame);
printf("\n");
#endif
// First update the containing blocks structure by removing the
// existing letter frames. This makes the subsequent logic
// simpler.
RemoveLetterFrames(aPresContext, shell, frameManager, containingBlock);
// Recover childFrame and parentFrame
shell->GetPrimaryFrameFor(aChild, &childFrame);
if (!childFrame) {
frameManager->ClearUndisplayedContentIn(aChild, aContainer);
return NS_OK;
}
childFrame->GetParent(&parentFrame);
#ifdef NOISY_FIRST_LETTER
printf(" ==> revised parentFrame=");
nsFrame::ListTag(stdout, parentFrame);
printf(" childFrame=");
nsFrame::ListTag(stdout, childFrame);
printf("\n");
#endif
}
// Walk the frame subtree deleting any out-of-flow frames, and
// remove the mapping from content objects to frames
DeletingFrameSubtree(aPresContext, shell, frameManager, childFrame);
// See if the child frame is a floating frame
const nsStyleDisplay* display;
childFrame->GetStyleData(eStyleStruct_Display,
(const nsStyleStruct*&)display);
if (display->IsFloating()) {
#ifdef NOISY_FIRST_LETTER
printf(" ==> child display is still floating!\n");
#endif
// Get the placeholder frame
nsIFrame* placeholderFrame;
frameManager->GetPlaceholderFrameFor(childFrame, &placeholderFrame);
// Remove the mapping from the frame to its placeholder
frameManager->SetPlaceholderFrameFor(childFrame, nsnull);
// Now we remove the floating frame
// XXX has to be done first for now: the blocks line list
// contains an array of pointers to the placeholder - we have to
// remove the floater first (which gets rid of the lines
// reference to the placeholder and floater) and then remove the
// placeholder
rv = frameManager->RemoveFrame(aPresContext, *shell, parentFrame,
nsLayoutAtoms::floaterList, childFrame);
// Remove the placeholder frame first (XXX second for now) (so
// that it doesn't retain a dangling pointer to memory)
if (nsnull != placeholderFrame) {
placeholderFrame->GetParent(&parentFrame);
DeletingFrameSubtree(aPresContext, shell, frameManager, placeholderFrame);
rv = frameManager->RemoveFrame(aPresContext, *shell, parentFrame,
nsnull, placeholderFrame);
}
}
else {
// See if it's absolutely or fixed positioned
const nsStylePosition* position;
childFrame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct*&)position);
if (position->IsAbsolutelyPositioned()) {
// Get the placeholder frame
nsIFrame* placeholderFrame;
frameManager->GetPlaceholderFrameFor(childFrame, &placeholderFrame);
// Remove the mapping from the frame to its placeholder
frameManager->SetPlaceholderFrameFor(childFrame, nsnull);
// Generate two notifications. First for the absolutely positioned
// frame
rv = frameManager->RemoveFrame(aPresContext, *shell, parentFrame,
(NS_STYLE_POSITION_FIXED == position->mPosition) ?
nsLayoutAtoms::fixedList : nsLayoutAtoms::absoluteList, childFrame);
// Now the placeholder frame
if (nsnull != placeholderFrame) {
placeholderFrame->GetParent(&parentFrame);
rv = frameManager->RemoveFrame(aPresContext, *shell, parentFrame, nsnull,
placeholderFrame);
}
} else {
// Notify the parent frame that it should delete the frame
nsIAtom* childList = GetChildListFor(childFrame);
rv = frameManager->RemoveFrame(aPresContext, *shell, parentFrame,
childList, childFrame);
}
}
if (mInitialContainingBlock == childFrame) {
mInitialContainingBlock = nsnull;
}
if (haveFLS && mInitialContainingBlock) {
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
GetAbsoluteContainingBlock(aPresContext,
parentFrame),
GetFloaterContainingBlock(aPresContext,
parentFrame),
nsnull);
RecoverLetterFrames(shell, aPresContext, state, containingBlock);
}
}
return rv;
}
static void
ApplyRenderingChangeToTree(nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIViewManager* aViewManager);
static void
SyncAndInvalidateView(nsIPresContext* aPresContext,
nsIView* aView,
nsIFrame* aFrame,
nsIViewManager* aViewManager)
{
const nsStyleColor* color;
const nsStyleDisplay* disp;
aFrame->GetStyleData(eStyleStruct_Color, (const nsStyleStruct*&) color);
aFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&) disp);
aViewManager->SetViewOpacity(aView, color->mOpacity);
// See if the view should be hidden or visible
PRBool viewIsVisible = PR_TRUE;
PRBool viewHasTransparentContent = (color->mBackgroundFlags &
NS_STYLE_BG_COLOR_TRANSPARENT) == NS_STYLE_BG_COLOR_TRANSPARENT;
if (NS_STYLE_VISIBILITY_COLLAPSE == disp->mVisible) {
viewIsVisible = PR_FALSE;
}
else if (NS_STYLE_VISIBILITY_HIDDEN == disp->mVisible) {
// If it has a widget, hide the view because the widget can't deal with it
nsIWidget* widget = nsnull;
aView->GetWidget(widget);
if (widget) {
viewIsVisible = PR_FALSE;
NS_RELEASE(widget);
}
else {
// If it's a scroll frame, then hide the view. This means that
// child elements can't override their parent's visibility, but
// it's not practical to leave it visible in all cases because
// the scrollbars will be showing
nsIAtom* frameType;
aFrame->GetFrameType(&frameType);
if (frameType == nsLayoutAtoms::scrollFrame) {
viewIsVisible = PR_FALSE;
} else {
// If it's a container element, then leave the view visible, but
// mark it as having transparent content. The reason we need to
// do this is that child elements can override their parent's
// hidden visibility and be visible anyway
nsIFrame* firstChild;
aFrame->FirstChild(aPresContext, nsnull, &firstChild);
if (firstChild) {
// It's not a left frame, so the view needs to be visible, but
// marked as having transparent content
viewHasTransparentContent = PR_TRUE;
} else {
// It's a leaf frame so go ahead and hide the view
viewIsVisible = PR_FALSE;
}
}
NS_IF_RELEASE(frameType);
}
}
// If the frame has visible content that overflows the content area, then we
// need the view marked as having transparent content
if (NS_STYLE_OVERFLOW_VISIBLE == disp->mOverflow) {
nsFrameState frameState;
aFrame->GetFrameState(&frameState);
if (frameState & NS_FRAME_OUTSIDE_CHILDREN) {
viewHasTransparentContent = PR_TRUE;
}
}
if (viewIsVisible) {
aViewManager->SetViewContentTransparency(aView, viewHasTransparentContent);
aViewManager->SetViewVisibility(aView, nsViewVisibility_kShow);
aViewManager->UpdateView(aView, NS_VMREFRESH_NO_SYNC);
}
else {
aViewManager->SetViewVisibility(aView, nsViewVisibility_kHide);
}
}
static void
UpdateViewsForTree(nsIPresContext* aPresContext, nsIFrame* aFrame,
nsIViewManager* aViewManager, nsRect& aBoundsRect)
{
nsIView* view;
aFrame->GetView(aPresContext, &view);
if (view) {
SyncAndInvalidateView(aPresContext, view, aFrame, aViewManager);
}
nsRect bounds;
aFrame->GetRect(bounds);
nsPoint parentOffset(bounds.x, bounds.y);
bounds.x = 0;
bounds.y = 0;
// now do children of frame
PRInt32 listIndex = 0;
nsIAtom* childList = nsnull;
nsIAtom* frameType = nsnull;
do {
nsIFrame* child = nsnull;
aFrame->FirstChild(aPresContext, childList, &child);
while (child) {
nsFrameState childState;
child->GetFrameState(&childState);
if (NS_FRAME_OUT_OF_FLOW != (childState & NS_FRAME_OUT_OF_FLOW)) {
// only do frames that are in flow
child->GetFrameType(&frameType);
if (nsLayoutAtoms::placeholderFrame == frameType) { // placeholder
// get out of flow frame and start over there
nsIFrame* outOfFlowFrame = ((nsPlaceholderFrame*)child)->GetOutOfFlowFrame();
NS_ASSERTION(outOfFlowFrame, "no out-of-flow frame");
ApplyRenderingChangeToTree(aPresContext, outOfFlowFrame, aViewManager);
}
else { // regular frame
nsRect childBounds;
UpdateViewsForTree(aPresContext, child, aViewManager, childBounds);
bounds.UnionRect(bounds, childBounds);
}
NS_IF_RELEASE(frameType);
}
child->GetNextSibling(&child);
}
NS_IF_RELEASE(childList);
aFrame->GetAdditionalChildListName(listIndex++, &childList);
} while (childList);
NS_IF_RELEASE(childList);
aBoundsRect = bounds;
aBoundsRect += parentOffset;
}
static void
ApplyRenderingChangeToTree(nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIViewManager* aViewManager)
{
nsIViewManager* viewManager = aViewManager;
// Trigger rendering updates by damaging this frame and any
// continuations of this frame.
// XXX this needs to detect the need for a view due to an opacity change and deal with it...
if (viewManager) {
NS_ADDREF(viewManager); // add local ref
viewManager->BeginUpdateViewBatch();
}
while (nsnull != aFrame) {
// Get the frame's bounding rect
nsRect invalidRect;
nsPoint viewOffset;
// Get view if this frame has one and trigger an update. If the
// frame doesn't have a view, find the nearest containing view
// (adjusting r's coordinate system to reflect the nesting) and
// update there.
nsIView* view = nsnull;
aFrame->GetView(aPresContext, &view);
nsIView* parentView;
if (! view) { // XXX can view have children outside it?
aFrame->GetOffsetFromView(aPresContext, viewOffset, &parentView);
NS_ASSERTION(nsnull != parentView, "no view");
if (! viewManager) {
parentView->GetViewManager(viewManager);
viewManager->BeginUpdateViewBatch();
}
}
else {
if (! viewManager) {
view->GetViewManager(viewManager);
viewManager->BeginUpdateViewBatch();
}
}
UpdateViewsForTree(aPresContext, aFrame, viewManager, invalidRect);
if (! view) { // if frame has view, will already be invalidated
// XXX Instead of calling this we should really be calling
// Invalidate on on the nsFrame (which does this)
const nsStyleSpacing* spacing;
aFrame->GetStyleData(eStyleStruct_Spacing, (const nsStyleStruct*&)spacing);
nscoord width;
spacing->GetOutlineWidth(width);
if (width > 0) {
invalidRect.Inflate(width, width);
}
nsPoint frameOrigin;
aFrame->GetOrigin(frameOrigin);
invalidRect -= frameOrigin;
invalidRect += viewOffset;
viewManager->UpdateView(parentView, invalidRect, NS_VMREFRESH_NO_SYNC);
}
aFrame->GetNextInFlow(&aFrame);
}
if (viewManager) {
nsCOMPtr<nsIPresShell> presShell;
nsresult rv = aPresContext->GetShell(getter_AddRefs(presShell));
if (NS_SUCCEEDED(rv)) {
PRBool isReflowLocked = PR_FALSE;
presShell->IsReflowLocked(&isReflowLocked);
if (isReflowLocked) {
viewManager->EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC);
} else {
viewManager->EndUpdateViewBatch(NS_VMREFRESH_IMMEDIATE);
}
} else {
viewManager->EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC);
}
// viewManager->Composite();
NS_RELEASE(viewManager);
}
}
static void
StyleChangeReflow(nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIAtom * aAttribute)
{
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsIReflowCommand* reflowCmd;
nsresult rv = NS_NewHTMLReflowCommand(&reflowCmd, aFrame,
nsIReflowCommand::StyleChanged,
nsnull,
aAttribute);
if (NS_SUCCEEDED(rv)) {
shell->AppendReflowCommand(reflowCmd);
NS_RELEASE(reflowCmd);
}
/*
nsFrameState state;
aFrame->GetFrameState(&state);
state |= NS_FRAME_IS_DIRTY;
aFrame->SetFrameState(state);
nsIFrame* parent;
aFrame->GetParent(&parent);
parent->ReflowDirtyChild(shell, aFrame);
*/
}
NS_IMETHODIMP
nsCSSFrameConstructor::ContentChanged(nsIPresContext* aPresContext,
nsIContent* aContent,
nsISupports* aSubContent)
{
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsresult rv = NS_OK;
// Find the child frame
nsIFrame* frame;
shell->GetPrimaryFrameFor(aContent, &frame);
// Notify the first frame that maps the content. It will generate a reflow
// command
// It's possible the frame whose content changed isn't inserted into the
// frame hierarchy yet, or that there is no frame that maps the content
if (nsnull != frame) {
#if 0
NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
("nsHTMLStyleSheet::ContentChanged: content=%p[%s] subcontent=%p frame=%p",
aContent, ContentTag(aContent, 0),
aSubContent, frame));
#endif
// Special check for text content that is a child of a letter
// frame. There are two interesting cases that we have to handle
// carefully: text content that is going empty (which means we
// should select a new text node as the first-letter text) or text
// content that empty but is no longer empty (it might be the
// first-letter text but isn't currently).
//
// To deal with both of these we make a simple change: map a
// ContentChanged into a ContentReplaced when we are changing text
// that is part of a first-letter situation.
PRBool doContentChanged = PR_TRUE;
nsCOMPtr<nsITextContent> textContent(do_QueryInterface(aContent));
if (textContent) {
// Ok, it's text content. Now do some real work...
nsIFrame* block = GetFloaterContainingBlock(aPresContext, frame);
if (block) {
// See if the block has first-letter style applied to it.
nsCOMPtr<nsIContent> blockContent;
block->GetContent(getter_AddRefs(blockContent));
nsCOMPtr<nsIStyleContext> blockSC;
block->GetStyleContext(getter_AddRefs(blockSC));
PRBool haveFirstLetterStyle =
HaveFirstLetterStyle(aPresContext, blockContent, blockSC);
if (haveFirstLetterStyle) {
// The block has first-letter style. Use content-replaced to
// repair the blocks frame structure properly.
nsCOMPtr<nsIContent> container;
aContent->GetParent(*getter_AddRefs(container));
if (container) {
PRInt32 ix;
container->IndexOf(aContent, ix);
doContentChanged = PR_FALSE;
rv = ContentReplaced(aPresContext, container,
aContent, aContent, ix);
}
}
}
}
if (doContentChanged) {
frame->ContentChanged(aPresContext, aContent, aSubContent);
}
}
return rv;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ProcessRestyledFrames(nsStyleChangeList& aChangeList,
nsIPresContext* aPresContext)
{
PRInt32 count = aChangeList.Count();
while (0 < count--) {
nsIFrame* frame;
nsIContent* content;
PRInt32 hint;
aChangeList.ChangeAt(count, frame, content, hint);
switch (hint) {
case NS_STYLE_HINT_RECONSTRUCT_ALL:
NS_ERROR("This shouldn't happen");
break;
case NS_STYLE_HINT_FRAMECHANGE:
RecreateFramesForContent(aPresContext, content);
break;
case NS_STYLE_HINT_REFLOW:
StyleChangeReflow(aPresContext, frame, nsnull);
break;
case NS_STYLE_HINT_VISUAL:
ApplyRenderingChangeToTree(aPresContext, frame, nsnull);
break;
case NS_STYLE_HINT_CONTENT:
default:
break;
}
}
aChangeList.Clear();
return NS_OK;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ContentStatesChanged(nsIPresContext* aPresContext,
nsIContent* aContent1,
nsIContent* aContent2)
{
nsresult result = NS_OK;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
NS_ASSERTION(shell, "couldn't get pres shell");
if (shell) {
nsIStyleSet* styleSet;
shell->GetStyleSet(&styleSet);
NS_ASSERTION(styleSet, "couldn't get style set");
if (styleSet) { // test if any style rules exist which are dependent on content state
nsIFrame* primaryFrame1 = nsnull;
nsIFrame* primaryFrame2 = nsnull;
if (aContent1 && (NS_OK == styleSet->HasStateDependentStyle(aPresContext, aContent1))) {
shell->GetPrimaryFrameFor(aContent1, &primaryFrame1);
}
else {
aContent1 = nsnull;
}
if (aContent2 && (aContent2 != aContent1) &&
(NS_OK == styleSet->HasStateDependentStyle(aPresContext, aContent2))) {
shell->GetPrimaryFrameFor(aContent2, &primaryFrame2);
}
else {
aContent2 = nsnull;
}
NS_RELEASE(styleSet);
if (primaryFrame1 && primaryFrame2) { // detect if one is parent of other, skip child
nsIFrame* parent;
primaryFrame1->GetParent(&parent);
while (parent) {
if (parent == primaryFrame2) { // frame2 is frame1's parent, skip frame1
primaryFrame1 = nsnull;
break;
}
parent->GetParent(&parent);
}
if (primaryFrame1) {
primaryFrame2->GetParent(&parent);
while (parent) {
if (parent == primaryFrame1) { // frame1 is frame2's parent, skip frame2
primaryFrame2 = nsnull;
break;
}
parent->GetParent(&parent);
}
}
}
nsCOMPtr<nsIFrameManager> frameManager;
shell->GetFrameManager(getter_AddRefs(frameManager));
if (primaryFrame1) {
nsStyleChangeList changeList1;
nsStyleChangeList changeList2;
PRInt32 frameChange1 = NS_STYLE_HINT_NONE;
PRInt32 frameChange2 = NS_STYLE_HINT_NONE;
frameManager->ComputeStyleChangeFor(aPresContext, primaryFrame1,
kNameSpaceID_Unknown, nsnull,
changeList1, NS_STYLE_HINT_NONE, frameChange1);
if ((frameChange1 != NS_STYLE_HINT_RECONSTRUCT_ALL) && (primaryFrame2)) {
frameManager->ComputeStyleChangeFor(aPresContext, primaryFrame2,
kNameSpaceID_Unknown, nsnull,
changeList2, NS_STYLE_HINT_NONE, frameChange2);
}
if ((frameChange1 == NS_STYLE_HINT_RECONSTRUCT_ALL) ||
(frameChange2 == NS_STYLE_HINT_RECONSTRUCT_ALL)) {
result = ReconstructDocElementHierarchy(aPresContext);
}
else {
switch (frameChange1) {
case NS_STYLE_HINT_FRAMECHANGE:
result = RecreateFramesForContent(aPresContext, aContent1);
changeList1.Clear();
break;
case NS_STYLE_HINT_REFLOW:
case NS_STYLE_HINT_VISUAL:
case NS_STYLE_HINT_CONTENT:
// let primary frame deal with it
result = primaryFrame1->ContentStateChanged(aPresContext, aContent1, frameChange1);
default:
break;
}
switch (frameChange2) {
case NS_STYLE_HINT_FRAMECHANGE:
result = RecreateFramesForContent(aPresContext, aContent2);
changeList2.Clear();
break;
case NS_STYLE_HINT_REFLOW:
case NS_STYLE_HINT_VISUAL:
case NS_STYLE_HINT_CONTENT:
// let primary frame deal with it
result = primaryFrame2->ContentStateChanged(aPresContext, aContent2, frameChange2);
// then process any children that need it
default:
break;
}
ProcessRestyledFrames(changeList1, aPresContext);
ProcessRestyledFrames(changeList2, aPresContext);
}
}
else if (primaryFrame2) {
nsStyleChangeList changeList;
PRInt32 frameChange = NS_STYLE_HINT_NONE;
frameManager->ComputeStyleChangeFor(aPresContext, primaryFrame2,
kNameSpaceID_Unknown, nsnull,
changeList, NS_STYLE_HINT_NONE, frameChange);
switch (frameChange) { // max change needed for top level frames
case NS_STYLE_HINT_RECONSTRUCT_ALL:
result = ReconstructDocElementHierarchy(aPresContext);
changeList.Clear();
break;
case NS_STYLE_HINT_FRAMECHANGE:
result = RecreateFramesForContent(aPresContext, aContent2);
changeList.Clear();
break;
case NS_STYLE_HINT_REFLOW:
case NS_STYLE_HINT_VISUAL:
case NS_STYLE_HINT_CONTENT:
// let primary frame deal with it
result = primaryFrame2->ContentStateChanged(aPresContext, aContent2, frameChange);
// then process any children that need it
default:
break;
}
ProcessRestyledFrames(changeList, aPresContext);
}
else { // no frames, reconstruct for content
if (aContent1) {
result = RecreateFramesForContent(aPresContext, aContent1);
}
if (aContent2) {
result = RecreateFramesForContent(aPresContext, aContent2);
}
}
}
}
return result;
}
NS_IMETHODIMP
nsCSSFrameConstructor::AttributeChanged(nsIPresContext* aPresContext,
nsIContent* aContent,
PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aHint)
{
nsresult result = NS_OK;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsIFrame* primaryFrame;
shell->GetPrimaryFrameFor(aContent, &primaryFrame);
#ifdef INCLUDE_XUL
// The following tree widget trap prevents offscreen tree widget
// content from being removed and re-inserted (which is what would
// happen otherwise).
if (!primaryFrame) {
nsCOMPtr<nsIAtom> tag;
aContent->GetTag(*getter_AddRefs(tag));
if (tag && (tag.get() == nsXULAtoms::treechildren ||
tag.get() == nsXULAtoms::treeitem))
return NS_OK;
}
#endif // INCLUDE_XUL
PRBool reconstruct = PR_FALSE;
PRBool restyle = PR_FALSE;
PRBool reframe = PR_FALSE;
#if 0
NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
("HTMLStyleSheet::AttributeChanged: content=%p[%s] frame=%p",
aContent, ContentTag(aContent, 0), frame));
#endif
// the style tag has its own interpretation based on aHint
if (NS_STYLE_HINT_UNKNOWN == aHint) {
nsIStyledContent* styledContent;
result = aContent->QueryInterface(NS_GET_IID(nsIStyledContent), (void**)&styledContent);
if (NS_OK == result) {
// Get style hint from HTML content object.
styledContent->GetMappedAttributeImpact(aAttribute, aHint);
NS_RELEASE(styledContent);
}
}
switch (aHint) {
default:
case NS_STYLE_HINT_RECONSTRUCT_ALL:
reconstruct = PR_TRUE;
case NS_STYLE_HINT_FRAMECHANGE:
reframe = PR_TRUE;
case NS_STYLE_HINT_REFLOW:
case NS_STYLE_HINT_VISUAL:
case NS_STYLE_HINT_UNKNOWN:
case NS_STYLE_HINT_CONTENT:
case NS_STYLE_HINT_AURAL:
restyle = PR_TRUE;
break;
case NS_STYLE_HINT_NONE:
break;
}
// apply changes
if (PR_TRUE == reconstruct) {
result = ReconstructDocElementHierarchy(aPresContext);
}
else if (PR_TRUE == reframe) {
result = RecreateFramesForContent(aPresContext, aContent);
}
else if (PR_TRUE == restyle) {
// If there is no frame then there is no point in re-styling it,
// is there?
if (primaryFrame) {
PRInt32 maxHint = aHint;
nsStyleChangeList changeList;
// put primary frame on list to deal with, re-resolve may update or add next in flows
changeList.AppendChange(primaryFrame, aContent, maxHint);
nsCOMPtr<nsIFrameManager> frameManager;
shell->GetFrameManager(getter_AddRefs(frameManager));
frameManager->ComputeStyleChangeFor(aPresContext, primaryFrame,
aNameSpaceID, aAttribute,
changeList, aHint, maxHint);
switch (maxHint) { // maxHint is hint for primary only
case NS_STYLE_HINT_RECONSTRUCT_ALL:
result = ReconstructDocElementHierarchy(aPresContext);
changeList.Clear();
break;
case NS_STYLE_HINT_FRAMECHANGE:
result = RecreateFramesForContent(aPresContext, aContent);
changeList.Clear();
break;
case NS_STYLE_HINT_REFLOW:
case NS_STYLE_HINT_VISUAL:
case NS_STYLE_HINT_CONTENT:
// let the frame deal with it, since we don't know how to
result = primaryFrame->AttributeChanged(aPresContext, aContent, aNameSpaceID, aAttribute, maxHint);
default:
break;
}
// handle any children (primary may be on list too)
ProcessRestyledFrames(changeList, aPresContext);
}
else { // no frame now, possibly genetate one with new style data
result = RecreateFramesForContent(aPresContext, aContent);
}
}
return result;
}
// Style change notifications
NS_IMETHODIMP
nsCSSFrameConstructor::StyleRuleChanged(nsIPresContext* aPresContext,
nsIStyleSheet* aStyleSheet,
nsIStyleRule* aStyleRule,
PRInt32 aHint)
{
nsresult result = NS_OK;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsIFrame* frame;
shell->GetRootFrame(&frame);
PRBool reframe = PR_FALSE;
PRBool reflow = PR_FALSE;
PRBool render = PR_FALSE;
PRBool restyle = PR_FALSE;
switch (aHint) {
default:
case NS_STYLE_HINT_UNKNOWN:
case NS_STYLE_HINT_FRAMECHANGE:
reframe = PR_TRUE;
case NS_STYLE_HINT_REFLOW:
reflow = PR_TRUE;
case NS_STYLE_HINT_VISUAL:
render = PR_TRUE;
case NS_STYLE_HINT_CONTENT:
case NS_STYLE_HINT_AURAL:
restyle = PR_TRUE;
break;
case NS_STYLE_HINT_NONE:
break;
}
if (restyle) {
nsIStyleContext* sc;
frame->GetStyleContext(&sc);
sc->RemapStyle(aPresContext);
NS_RELEASE(sc);
}
if (reframe) {
result = ReconstructDocElementHierarchy(aPresContext);
}
else {
// XXX hack, skip the root and scrolling frames
frame->FirstChild(aPresContext, nsnull, &frame);
frame->FirstChild(aPresContext, nsnull, &frame);
if (reflow) {
StyleChangeReflow(aPresContext, frame, nsnull);
}
else if (render) {
ApplyRenderingChangeToTree(aPresContext, frame, nsnull);
}
}
return result;
}
NS_IMETHODIMP
nsCSSFrameConstructor::StyleRuleAdded(nsIPresContext* aPresContext,
nsIStyleSheet* aStyleSheet,
nsIStyleRule* aStyleRule)
{
// XXX TBI: should query rule for impact and do minimal work
ReconstructDocElementHierarchy(aPresContext);
return NS_OK;
}
NS_IMETHODIMP
nsCSSFrameConstructor::StyleRuleRemoved(nsIPresContext* aPresContext,
nsIStyleSheet* aStyleSheet,
nsIStyleRule* aStyleRule)
{
// XXX TBI: should query rule for impact and do minimal work
ReconstructDocElementHierarchy(aPresContext);
return NS_OK;
}
static void
GetAlternateTextFor(nsIContent* aContent,
nsIAtom* aTag, // content object's tag
nsString& aAltText)
{
nsresult rv;
// The "alt" attribute specifies alternate text that is rendered
// when the image can not be displayed
rv = aContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::alt, aAltText);
if (NS_CONTENT_ATTR_NOT_THERE == rv) {
// If there's no "alt" attribute, then use the value of the "title"
// attribute. Note that this is not the same as a value of ""
rv = aContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::title, aAltText);
}
if (NS_CONTENT_ATTR_NOT_THERE == rv) {
// If there's no "title" attribute, then what we do depends on the type
// of element
if (nsHTMLAtoms::img == aTag) {
// Use the filename minus the extension
aContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::src, aAltText);
if (aAltText.Length() > 0) {
// The path is a hierarchical structure of segments. Get the last substring
// in the path
PRInt32 offset = aAltText.RFindChar('/');
if (offset >= 0) {
aAltText.Cut(0, offset + 1);
}
// Ignore fragment identifiers ('#' delimiter), query strings ('?'
// delimiter), and anything beginning with ';'
offset = aAltText.FindCharInSet("#?;");
if (offset >= 0) {
aAltText.Truncate(offset);
}
// Trim off any extension (including the '.')
offset = aAltText.RFindChar('.');
if (offset >= 0) {
aAltText.Truncate(offset);
}
}
} else if (nsHTMLAtoms::input == aTag) {
// Use the valuf of the "name" attribute
aContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::name, aAltText);
}
}
}
// Construct an alternate frame to use when the image can't be rendered
nsresult
nsCSSFrameConstructor::ConstructAlternateImageFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIContent* aContent,
nsIStyleContext* aStyleContext,
nsIFrame* aParentFrame,
nsIFrame*& aFrame)
{
nsAutoString altText;
// Initialize OUT parameter
aFrame = nsnull;
// Get the alternate text to use
GetAlternateTextFor(aContent, nsHTMLAtoms::img, altText);
// Create a text content element for the alternate text
nsCOMPtr<nsIContent> altTextContent;
NS_NewTextNode(getter_AddRefs(altTextContent));
// Set the content's text
nsIDOMCharacterData* domData;
altTextContent->QueryInterface(kIDOMCharacterDataIID, (void**)&domData);
domData->SetData(altText);
NS_RELEASE(domData);
// Set aContent as the parent content and set the document object
nsCOMPtr<nsIDocument> document;
aContent->GetDocument(*getter_AddRefs(document));
altTextContent->SetParent(aContent);
altTextContent->SetDocument(document, PR_TRUE);
// Create either an inline frame, block frame, or area frame
nsIFrame* containerFrame;
PRBool isOutOfFlow = PR_FALSE;
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
const nsStylePosition* position = (const nsStylePosition*)
aStyleContext->GetStyleData(eStyleStruct_Position);
if (position->IsAbsolutelyPositioned()) {
NS_NewAbsoluteItemWrapperFrame(aPresShell, &containerFrame);
isOutOfFlow = PR_TRUE;
} else if (display->IsFloating()) {
NS_NewFloatingItemWrapperFrame(aPresShell, &containerFrame);
isOutOfFlow = PR_TRUE;
} else if (NS_STYLE_DISPLAY_BLOCK == display->mDisplay) {
NS_NewBlockFrame(aPresShell, &containerFrame);
} else {
NS_NewInlineFrame(aPresShell, &containerFrame);
}
containerFrame->Init(aPresContext, aContent, aParentFrame, aStyleContext, nsnull);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, containerFrame,
aStyleContext, PR_FALSE);
// If the frame is out-of-flow, then mark it as such
if (isOutOfFlow) {
nsFrameState frameState;
containerFrame->GetFrameState(&frameState);
containerFrame->SetFrameState(frameState | NS_FRAME_OUT_OF_FLOW);
}
// Create a text frame to display the alt-text. It gets a pseudo-element
// style context
nsIFrame* textFrame;
nsIStyleContext* textStyleContext;
NS_NewTextFrame(aPresShell, &textFrame);
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::textPseudo,
aStyleContext, PR_FALSE,
&textStyleContext);
textFrame->Init(aPresContext, altTextContent, containerFrame,
textStyleContext, nsnull);
NS_RELEASE(textStyleContext);
containerFrame->SetInitialChildList(aPresContext, nsnull, textFrame);
// Return the container frame
aFrame = containerFrame;
return NS_OK;
}
#ifdef NS_DEBUG
static PRBool
IsPlaceholderFrame(nsIFrame* aFrame)
{
nsIAtom* frameType;
PRBool result;
aFrame->GetFrameType(&frameType);
result = frameType == nsLayoutAtoms::placeholderFrame;
NS_IF_RELEASE(frameType);
return result;
}
#endif
NS_IMETHODIMP
nsCSSFrameConstructor::CantRenderReplacedElement(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame* aFrame)
{
nsIFrame* parentFrame;
nsCOMPtr<nsIStyleContext> styleContext;
nsCOMPtr<nsIContent> content;
nsCOMPtr<nsIAtom> tag;
nsresult rv = NS_OK;
aFrame->GetParent(&parentFrame);
aFrame->GetStyleContext(getter_AddRefs(styleContext));
// Get aFrame's content object and the tag name
aFrame->GetContent(getter_AddRefs(content));
NS_ASSERTION(content, "null content object");
content->GetTag(*getter_AddRefs(tag));
// Get the child list name that the frame is contained in
nsCOMPtr<nsIAtom> listName;
GetChildListNameFor(aPresContext, parentFrame, aFrame, getter_AddRefs(listName));
// If the frame is out of the flow, then it has a placeholder frame.
nsIFrame* placeholderFrame = nsnull;
nsCOMPtr<nsIPresShell> presShell;
aPresContext->GetShell(getter_AddRefs(presShell));
if (listName) {
presShell->GetPlaceholderFrameFor(aFrame, &placeholderFrame);
}
// Get the previous sibling frame
nsIFrame* firstChild;
parentFrame->FirstChild(aPresContext, listName, &firstChild);
nsFrameList frameList(firstChild);
// See whether it's an IMG or an OBJECT element
if (nsHTMLAtoms::img == tag.get()) {
// It's an IMG element. Try and construct an alternate frame to use when the
// image can't be rendered
nsIFrame* newFrame;
rv = ConstructAlternateImageFrame(aPresShell, aPresContext, content, styleContext,
parentFrame, newFrame);
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIFrameManager> frameManager;
presShell->GetFrameManager(getter_AddRefs(frameManager));
// Replace the old frame with the new frame
// Reset the primary frame mapping
frameManager->SetPrimaryFrameFor(content, newFrame);
if (placeholderFrame) {
// Reuse the existing placeholder frame, and add an association to the
// new frame
frameManager->SetPlaceholderFrameFor(newFrame, placeholderFrame);
}
// Replace the old frame with the new frame
frameManager->ReplaceFrame(aPresContext, *presShell, parentFrame,
listName, aFrame, newFrame);
// Now that we've replaced the primary frame, if there's a placeholder
// frame then complete the transition from image frame to new frame
if (placeholderFrame) {
// Remove the association between the old frame and its placeholder
frameManager->SetPlaceholderFrameFor(aFrame, nsnull);
// Placeholder frames have a pointer back to the out-of-flow frame.
// Make sure that's correct, too.
((nsPlaceholderFrame*)placeholderFrame)->SetOutOfFlowFrame(newFrame);
// XXX Work around a bug in the block code where the floater won't get
// reflowed unless the line containing the placeholder frame is reflowed...
nsIFrame* placeholderParentFrame;
placeholderFrame->GetParent(&placeholderParentFrame);
placeholderParentFrame->ReflowDirtyChild(aPresShell, placeholderFrame);
}
}
} else if ((nsHTMLAtoms::object == tag.get()) ||
(nsHTMLAtoms::embed == tag.get()) ||
(nsHTMLAtoms::applet == tag.get())) {
// It's an OBJECT, EMBED, or APPLET, so we should display the contents
// instead
nsIFrame* absoluteContainingBlock;
nsIFrame* floaterContainingBlock;
nsIFrame* inFlowParent = parentFrame;
// If the OBJECT frame is out-of-flow, then get the placeholder frame's
// parent and use that when determining the absolute containing block and
// floater containing block
if (placeholderFrame) {
placeholderFrame->GetParent(&inFlowParent);
}
absoluteContainingBlock = GetAbsoluteContainingBlock(aPresContext, inFlowParent),
floaterContainingBlock = GetFloaterContainingBlock(aPresContext, inFlowParent);
#ifdef NS_DEBUG
// Verify that we calculated the same containing block
if (listName.get() == nsLayoutAtoms::absoluteList) {
NS_ASSERTION(absoluteContainingBlock == parentFrame,
"wrong absolute containing block");
} else if (listName.get() == nsLayoutAtoms::floaterList) {
NS_ASSERTION(floaterContainingBlock == parentFrame,
"wrong floater containing block");
}
#endif
// Now initialize the frame construction state
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
absoluteContainingBlock, floaterContainingBlock, nsnull);
nsFrameItems frameItems;
const nsStyleDisplay* display = (const nsStyleDisplay*)
styleContext->GetStyleData(eStyleStruct_Display);
// Create a new frame based on the display type.
// Note: if the old frame was out-of-flow, then so will the new frame
// and we'll get a new placeholder frame
rv = ConstructFrameByDisplayType(aPresShell, aPresContext, state, display, content,
inFlowParent, styleContext, frameItems);
if (NS_SUCCEEDED(rv)) {
nsIFrame* newFrame = frameItems.childList;
if (placeholderFrame) {
// Remove the association between the old frame and its placeholder
// Note: ConstructFrameByDisplayType() will already have added an
// association for the new placeholder frame
state.mFrameManager->SetPlaceholderFrameFor(aFrame, nsnull);
// Verify that the new frame is also a placeholder frame
NS_ASSERTION(IsPlaceholderFrame(newFrame), "unexpected frame type");
// Replace the old placeholder frame with the new placeholder frame
state.mFrameManager->ReplaceFrame(aPresContext, *presShell, inFlowParent,
nsnull, placeholderFrame, newFrame);
}
// Replace the primary frame
if (listName.get() == nsLayoutAtoms::absoluteList) {
newFrame = state.mAbsoluteItems.childList;
state.mAbsoluteItems.childList = nsnull;
} else if (listName.get() == nsLayoutAtoms::fixedList) {
newFrame = state.mFixedItems.childList;
state.mFixedItems.childList = nsnull;
} else if (listName.get() == nsLayoutAtoms::floaterList) {
newFrame = state.mFloatedItems.childList;
state.mFloatedItems.childList = nsnull;
}
state.mFrameManager->ReplaceFrame(aPresContext, *presShell, parentFrame,
listName, aFrame, newFrame);
// Reset the primary frame mapping. Don't assume that
// ConstructFrameByDisplayType() has done this
state.mFrameManager->SetPrimaryFrameFor(content, newFrame);
// If there are new absolutely positioned child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mAbsoluteItems.childList) {
rv = state.mAbsoluteItems.containingBlock->AppendFrames(aPresContext, *presShell,
nsLayoutAtoms::absoluteList,
state.mAbsoluteItems.childList);
}
// If there are new fixed positioned child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mFixedItems.childList) {
rv = state.mFixedItems.containingBlock->AppendFrames(aPresContext, *presShell,
nsLayoutAtoms::fixedList,
state.mFixedItems.childList);
}
// If there are new floating child frames, then notify the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mFloatedItems.childList) {
rv = state.mFloatedItems.containingBlock->AppendFrames(aPresContext,
*presShell,
nsLayoutAtoms::floaterList,
state.mFloatedItems.childList);
}
}
} else if (nsHTMLAtoms::input == tag.get()) {
// XXX image INPUT elements are also image frames, but don't throw away the
// image frame, because the frame class has extra logic that is specific to
// INPUT elements
} else {
NS_ASSERTION(PR_FALSE, "unexpected tag");
}
return rv;
}
nsresult
nsCSSFrameConstructor::CreateContinuingOuterTableFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIFrame* aParentFrame,
nsIContent* aContent,
nsIStyleContext* aStyleContext,
nsIFrame** aContinuingFrame)
{
nsIFrame* newFrame;
nsresult rv;
rv = NS_NewTableOuterFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, aContent, aParentFrame, aStyleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
aStyleContext, PR_FALSE);
// Create a continuing inner table frame, and if there's a caption then
// replicate the caption
nsIFrame* childFrame;
nsFrameItems newChildFrames;
aFrame->FirstChild(aPresContext, nsnull, &childFrame);
while (childFrame) {
nsIAtom* tableType;
// See if it's the inner table frame
childFrame->GetFrameType(&tableType);
if (nsLayoutAtoms::tableFrame == tableType) {
nsIFrame* continuingTableFrame;
// It's the inner table frame, so create a continuing frame
CreateContinuingFrame(aPresShell, aPresContext, childFrame, newFrame, &continuingTableFrame);
newChildFrames.AddChild(continuingTableFrame);
} else {
nsIContent* caption;
nsIStyleContext* captionStyle;
const nsStyleDisplay* display;
childFrame->GetContent(&caption);
childFrame->GetStyleContext(&captionStyle);
display = (const nsStyleDisplay*)captionStyle->GetStyleData(eStyleStruct_Display);
NS_ASSERTION(NS_STYLE_DISPLAY_TABLE_CAPTION == display->mDisplay, "expected caption");
// Replicate the caption frame
// XXX We have to do it this way instead of calling ConstructFrameByDisplayType(),
// because of a bug in the way ConstructTableFrame() handles the initial child
// list...
nsIFrame* captionFrame;
nsFrameItems childItems;
NS_NewTableCaptionFrame(aPresShell, &captionFrame);
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
GetAbsoluteContainingBlock(aPresContext, newFrame),
captionFrame, nsnull);
captionFrame->Init(aPresContext, caption, newFrame, captionStyle, nsnull);
ProcessChildren(aPresShell, aPresContext, state, caption, captionFrame,
PR_TRUE, childItems, PR_TRUE);
captionFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
// XXX Deal with absolute and fixed frames...
if (state.mFloatedItems.childList) {
captionFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floaterList,
state.mFloatedItems.childList);
}
newChildFrames.AddChild(captionFrame);
NS_RELEASE(caption);
NS_RELEASE(captionStyle);
}
NS_IF_RELEASE(tableType);
childFrame->GetNextSibling(&childFrame);
}
// Set the outer table's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, newChildFrames.childList);
}
*aContinuingFrame = newFrame;
return rv;
}
nsresult
nsCSSFrameConstructor::CreateContinuingTableFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIFrame* aParentFrame,
nsIContent* aContent,
nsIStyleContext* aStyleContext,
nsIFrame** aContinuingFrame)
{
nsIFrame* newFrame;
nsresult rv;
rv = NS_NewTableFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, aContent, aParentFrame, aStyleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
aStyleContext, PR_FALSE);
// Replicate any header/footer frames
nsIFrame* rowGroupFrame;
nsFrameItems childFrames;
aFrame->FirstChild(aPresContext, nsnull, &rowGroupFrame);
while (rowGroupFrame) {
// See if it's a header/footer
nsIStyleContext* rowGroupStyle;
const nsStyleDisplay* display;
rowGroupFrame->GetStyleContext(&rowGroupStyle);
display = (const nsStyleDisplay*)rowGroupStyle->GetStyleData(eStyleStruct_Display);
if ((NS_STYLE_DISPLAY_TABLE_HEADER_GROUP == display->mDisplay) ||
(NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP == display->mDisplay)) {
// Replicate the header/footer frame
nsIFrame* headerFooterFrame;
nsFrameItems childItems;
nsIContent* headerFooter;
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
GetAbsoluteContainingBlock(aPresContext, newFrame),
nsnull, nsnull);
NS_NewTableRowGroupFrame(aPresShell, &headerFooterFrame);
rowGroupFrame->GetContent(&headerFooter);
headerFooterFrame->Init(aPresContext, headerFooter, newFrame,
rowGroupStyle, nsnull);
ProcessChildren(aPresShell, aPresContext, state, headerFooter, headerFooterFrame,
PR_FALSE, childItems, PR_FALSE);
NS_ASSERTION(!state.mFloatedItems.childList, "unexpected floated element");
NS_RELEASE(headerFooter);
headerFooterFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
// Table specific initialization
((nsTableRowGroupFrame*)headerFooterFrame)->InitRepeatedFrame
(aPresContext, (nsTableRowGroupFrame*)rowGroupFrame);
// XXX Deal with absolute and fixed frames...
childFrames.AddChild(headerFooterFrame);
}
NS_RELEASE(rowGroupStyle);
// Header and footer must be first, and then the body row groups.
// So if we found a body row group, then stop looking for header and
// footer elements
if (NS_STYLE_DISPLAY_TABLE_ROW_GROUP == display->mDisplay) {
break;
}
// Get the next row group frame
rowGroupFrame->GetNextSibling(&rowGroupFrame);
}
// Set the table frame's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, childFrames.childList);
}
*aContinuingFrame = newFrame;
return rv;
}
NS_IMETHODIMP
nsCSSFrameConstructor::CreateContinuingFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIFrame* aParentFrame,
nsIFrame** aContinuingFrame)
{
nsIAtom* frameType;
nsIContent* content;
nsIStyleContext* styleContext;
nsIFrame* newFrame = nsnull;
nsresult rv;
// Use the frame type to determine what type of frame to create
aFrame->GetFrameType(&frameType);
aFrame->GetContent(&content);
aFrame->GetStyleContext(&styleContext);
if (nsLayoutAtoms::textFrame == frameType) {
rv = NS_NewContinuingTextFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_FALSE);
}
} else if (nsLayoutAtoms::inlineFrame == frameType) {
rv = NS_NewInlineFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_FALSE);
}
} else if (nsLayoutAtoms::blockFrame == frameType) {
rv = NS_NewBlockFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_FALSE);
}
} else if (nsLayoutAtoms::areaFrame == frameType) {
rv = NS_NewAreaFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext,
aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_FALSE);
}
} else if (nsLayoutAtoms::positionedInlineFrame == frameType) {
rv = NS_NewPositionedInlineFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_FALSE);
}
} else if (nsLayoutAtoms::pageFrame == frameType) {
rv = NS_NewPageFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_TRUE);
}
} else if (nsLayoutAtoms::tableOuterFrame == frameType) {
rv = CreateContinuingOuterTableFrame(aPresShell, aPresContext, aFrame, aParentFrame,
content, styleContext, &newFrame);
} else if (nsLayoutAtoms::tableFrame == frameType) {
rv = CreateContinuingTableFrame(aPresShell, aPresContext, aFrame, aParentFrame,
content, styleContext, &newFrame);
} else if (nsLayoutAtoms::tableRowGroupFrame == frameType) {
rv = NS_NewTableRowGroupFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_FALSE);
}
} else if (nsLayoutAtoms::tableRowFrame == frameType) {
rv = NS_NewTableRowFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_FALSE);
// Create a continuing frame for each table cell frame
nsIFrame* cellFrame;
nsFrameItems newChildList;
aFrame->FirstChild(aPresContext, nsnull, &cellFrame);
while (cellFrame) {
nsIAtom* tableType;
// See if it's a table cell frame
cellFrame->GetFrameType(&tableType);
if (nsLayoutAtoms::tableCellFrame == tableType) {
nsIFrame* continuingCellFrame;
CreateContinuingFrame(aPresShell, aPresContext, cellFrame, newFrame, &continuingCellFrame);
newChildList.AddChild(continuingCellFrame);
}
NS_IF_RELEASE(tableType);
cellFrame->GetNextSibling(&cellFrame);
}
// Set the table cell's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, newChildList.childList);
}
} else if (nsLayoutAtoms::tableCellFrame == frameType) {
rv = NS_NewTableCellFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_FALSE);
// Create a continuing area frame
nsIFrame* areaFrame;
nsIFrame* continuingAreaFrame;
aFrame->FirstChild(aPresContext, nsnull, &areaFrame);
CreateContinuingFrame(aPresShell, aPresContext, areaFrame, newFrame, &continuingAreaFrame);
// Set the table cell's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, continuingAreaFrame);
}
} else if (nsLayoutAtoms::lineFrame == frameType) {
rv = NS_NewFirstLineFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_FALSE);
}
} else if (nsLayoutAtoms::letterFrame == frameType) {
rv = NS_NewFirstLetterFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_FALSE);
}
} else {
NS_ASSERTION(PR_FALSE, "unexpected frame type");
rv = NS_ERROR_UNEXPECTED;
}
*aContinuingFrame = newFrame;
NS_RELEASE(styleContext);
NS_IF_RELEASE(content);
NS_IF_RELEASE(frameType);
return rv;
}
// Helper function that searches the immediate child frames for a frame that
// maps the specified content object
static nsIFrame*
FindFrameWithContent(nsIPresContext* aPresContext,
nsIFrame* aParentFrame,
nsIContent* aParentContent,
nsIContent* aContent)
{
NS_PRECONDITION(aParentFrame, "No frame to search!");
if (!aParentFrame) {
return nsnull;
}
keepLooking:
// Search for the frame in each child list that aParentFrame supports
nsIAtom* listName = nsnull;
PRInt32 listIndex = 0;
do {
nsIFrame* kidFrame;
aParentFrame->FirstChild(aPresContext, listName, &kidFrame);
while (kidFrame) {
nsCOMPtr<nsIContent> kidContent;
// See if the child frame points to the content object we're
// looking for
kidFrame->GetContent(getter_AddRefs(kidContent));
if (kidContent.get() == aContent) {
nsCOMPtr<nsIAtom> frameType;
// We found a match. See if it's a placeholder frame
kidFrame->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::placeholderFrame == frameType.get()) {
// Ignore the placeholder and return the out-of-flow frame instead
return ((nsPlaceholderFrame*)kidFrame)->GetOutOfFlowFrame();
} else {
// Return the matching child frame
return kidFrame;
}
}
// We search the immediate children only, but if the child frame has
// the same content pointer as its parent then we need to search its
// child frames, too
if (kidContent.get() == aParentContent) {
nsIFrame* matchingFrame = FindFrameWithContent(aPresContext, kidFrame, aParentContent,
aContent);
if (matchingFrame) {
return matchingFrame;
}
}
// Get the next sibling frame
kidFrame->GetNextSibling(&kidFrame);
}
NS_IF_RELEASE(listName);
aParentFrame->GetAdditionalChildListName(listIndex++, &listName);
} while(listName);
// We didn't find a matching frame. If aFrame has a next-in-flow,
// then continue looking there
aParentFrame->GetNextInFlow(&aParentFrame);
if (aParentFrame) {
goto keepLooking;
}
// No matching frame
return nsnull;
}
// Request to find the primary frame associated with a given content object.
// This is typically called by the pres shell when there is no mapping in
// the pres shell hash table
NS_IMETHODIMP
nsCSSFrameConstructor::FindPrimaryFrameFor(nsIPresContext* aPresContext,
nsIFrameManager* aFrameManager,
nsIContent* aContent,
nsIFrame** aFrame)
{
*aFrame = nsnull; // initialize OUT parameter
// Get the pres shell
nsCOMPtr<nsIPresShell> presShell;
aPresContext->GetShell(getter_AddRefs(presShell));
// We want to be able to quickly map from a content object to its frame,
// but we also want to keep the hash table small. Therefore, many frames
// are not added to the hash table when they're first created:
// - text frames
// - inline frames (often things like FONT and B)
// - BR frames
// - internal table frames (row-group, row, cell, col-group, col)
//
// That means we need to need to search for the frame
nsCOMPtr<nsIContent> parentContent; // we get this one time
nsIFrame* parentFrame; // this pointer is used to iterate across all frames that map to parentContent
// Get the frame that corresponds to the parent content object.
// Note that this may recurse indirectly, because the pres shell will
// call us back if there is no mapping in the hash table
aContent->GetParent(*getter_AddRefs(parentContent));
if (parentContent.get()) {
aFrameManager->GetPrimaryFrameFor(parentContent, &parentFrame);
while (parentFrame) {
// Search the child frames for a match
*aFrame = FindFrameWithContent(aPresContext, parentFrame, parentContent.get(), aContent);
// If we found a match, then add a mapping to the hash table so
// next time this will be quick
if (*aFrame) {
aFrameManager->SetPrimaryFrameFor(aContent, *aFrame);
break;
}
else {
// We need to check parentFrame's sibling frame as well
parentFrame->GetNextSibling(&parentFrame);
if (!parentFrame) {
break;
}
else {
nsCOMPtr<nsIContent>nextParentContent;
parentFrame->GetContent(getter_AddRefs(nextParentContent));
if (parentContent!=nextParentContent) {
break;
}
}
}
}
}
return NS_OK;
}
// Capture state for the frame tree rooted at the frame associated with the
// content object, aContent
nsresult
nsCSSFrameConstructor::CaptureStateForFramesOf(nsIPresContext* aPresContext,
nsIContent* aContent,
nsILayoutHistoryState* aHistoryState)
{
nsCOMPtr<nsIPresShell> presShell;
nsresult rv = NS_OK;
rv = aPresContext->GetShell(getter_AddRefs(presShell));
if (NS_SUCCEEDED(rv) && presShell) {
nsIFrame* frame;
rv = presShell->GetPrimaryFrameFor(aContent, &frame);
if (NS_SUCCEEDED(rv) && frame) {
CaptureStateFor(aPresContext, frame, aHistoryState);
}
}
return rv;
}
// Capture state for the frame tree rooted at aFrame.
nsresult
nsCSSFrameConstructor::CaptureStateFor(nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsILayoutHistoryState* aHistoryState)
{
nsresult rv = NS_OK;
if (aFrame && aPresContext && aHistoryState) {
nsCOMPtr<nsIPresShell> presShell;
rv = aPresContext->GetShell(getter_AddRefs(presShell));
if (NS_SUCCEEDED(rv) && presShell) {
nsCOMPtr<nsIFrameManager> frameManager;
rv = presShell->GetFrameManager(getter_AddRefs(frameManager));
if (NS_SUCCEEDED(rv) && frameManager) {
rv = frameManager->CaptureFrameState(aPresContext, aFrame, aHistoryState);
}
}
}
return rv;
}
nsresult
nsCSSFrameConstructor::RecreateFramesForContent(nsIPresContext* aPresContext,
nsIContent* aContent)
{
nsresult rv = NS_OK;
nsIContent* container;
rv = aContent->GetParent(container);
if (NS_SUCCEEDED(rv) && container) {
PRInt32 indexInContainer;
rv = container->IndexOf(aContent, indexInContainer);
if (NS_SUCCEEDED(rv)) {
// Before removing the frames associated with the content object, ask them to save their
// state onto a temporary state object.
CaptureStateForFramesOf(aPresContext, aContent, mTempFrameTreeState);
// Remove the frames associated with the content object on which the
// attribute change occurred.
rv = ContentRemoved(aPresContext, container, aContent, indexInContainer);
if (NS_SUCCEEDED(rv)) {
// Now, recreate the frames associated with this content object.
rv = ContentInserted(aPresContext, container, aContent, indexInContainer, mTempFrameTreeState);
}
}
NS_RELEASE(container);
}
return rv;
}
//////////////////////////////////////////////////////////////////////
// Block frame construction code
nsIStyleContext*
nsCSSFrameConstructor::GetFirstLetterStyle(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIStyleContext* aStyleContext)
{
nsIStyleContext* fls = nsnull;
aPresContext->ResolvePseudoStyleContextFor(aContent,
nsHTMLAtoms::firstLetterPseudo,
aStyleContext, PR_FALSE, &fls);
return fls;
}
nsIStyleContext*
nsCSSFrameConstructor::GetFirstLineStyle(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIStyleContext* aStyleContext)
{
nsIStyleContext* fls = nsnull;
aPresContext->ResolvePseudoStyleContextFor(aContent,
nsHTMLAtoms::firstLinePseudo,
aStyleContext, PR_FALSE, &fls);
return fls;
}
// Predicate to see if a given content (block element) has
// first-letter style applied to it.
PRBool
nsCSSFrameConstructor::HaveFirstLetterStyle(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIStyleContext* aStyleContext)
{
nsCOMPtr<nsIStyleContext> fls;
aPresContext->ProbePseudoStyleContextFor(aContent,
nsHTMLAtoms::firstLetterPseudo,
aStyleContext, PR_FALSE,
getter_AddRefs(fls));
PRBool result = PR_FALSE;
if (fls) {
result = PR_TRUE;
}
return result;
}
PRBool
nsCSSFrameConstructor::HaveFirstLineStyle(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIStyleContext* aStyleContext)
{
nsCOMPtr<nsIStyleContext> fls;
aPresContext->ProbePseudoStyleContextFor(aContent,
nsHTMLAtoms::firstLinePseudo,
aStyleContext, PR_FALSE,
getter_AddRefs(fls));
PRBool result = PR_FALSE;
if (fls) {
result = PR_TRUE;
}
return result;
}
void
nsCSSFrameConstructor::HaveSpecialBlockStyle(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIStyleContext* aStyleContext,
PRBool* aHaveFirstLetterStyle,
PRBool* aHaveFirstLineStyle)
{
*aHaveFirstLetterStyle =
HaveFirstLetterStyle(aPresContext, aContent, aStyleContext);
*aHaveFirstLineStyle =
HaveFirstLineStyle(aPresContext, aContent, aStyleContext);
}
/**
* Request to process the child content elements and create frames.
*
* @param aContent the content object whose child elements to process
* @param aFrame the the associated with aContent. This will be the
* parent frame (both content and geometric) for the flowed
* child frames
*/
nsresult
nsCSSFrameConstructor::ProcessChildren(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aFrame,
PRBool aCanHaveGeneratedContent,
nsFrameItems& aFrameItems,
PRBool aParentIsBlock)
{
nsresult rv = NS_OK;
nsCOMPtr<nsIStyleContext> styleContext;
if (aCanHaveGeneratedContent) {
// Probe for generated content before
nsIFrame* generatedFrame;
aFrame->GetStyleContext(getter_AddRefs(styleContext));
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, aFrame, aContent,
styleContext, nsCSSAtoms::beforePseudo,
aParentIsBlock, &generatedFrame)) {
// Add the generated frame to the child list
aFrameItems.AddChild(generatedFrame);
}
}
// Iterate the child content objects and construct frames
PRInt32 count;
aContent->ChildCount(count);
for (PRInt32 i = 0; i < count; i++) {
nsCOMPtr<nsIContent> childContent;
if (NS_SUCCEEDED(aContent->ChildAt(i, *getter_AddRefs(childContent)))) {
// Construct a child frame
rv = ConstructFrame(aPresShell, aPresContext, aState, childContent, aFrame, aFrameItems);
if (NS_FAILED(rv)) {
return rv;
}
}
}
if (aCanHaveGeneratedContent) {
// Probe for generated content after
nsIFrame* generatedFrame;
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, aFrame, aContent,
styleContext, nsCSSAtoms::afterPseudo,
aParentIsBlock, &generatedFrame)) {
// Add the generated frame to the child list
aFrameItems.AddChild(generatedFrame);
}
}
if (aParentIsBlock) {
if (aState.mFirstLetterStyle) {
rv = WrapFramesInFirstLetterFrame(aPresShell, aPresContext, aState, aContent, aFrame, aFrameItems);
}
if (aState.mFirstLineStyle) {
rv = WrapFramesInFirstLineFrame(aPresShell, aPresContext, aState, aContent, aFrame, aFrameItems);
}
}
return rv;
}
//----------------------------------------------------------------------
// Support for :first-line style
// XXX this predicate and its cousins need to migrated to a single
// place in layout - something in nsStyleDisplay maybe?
static PRBool
IsInlineFrame(nsIFrame* aFrame)
{
const nsStyleDisplay* display;
aFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&) display);
switch (display->mDisplay) {
case NS_STYLE_DISPLAY_INLINE:
case NS_STYLE_DISPLAY_INLINE_BLOCK:
case NS_STYLE_DISPLAY_INLINE_TABLE:
return PR_TRUE;
default:
break;
}
return PR_FALSE;
}
static void
ReparentFrame(nsIPresContext* aPresContext,
nsIFrame* aNewParentFrame,
nsIStyleContext* aParentStyleContext,
nsIFrame* aFrame)
{
aPresContext->ReParentStyleContext(aFrame, aParentStyleContext);
aFrame->SetParent(aNewParentFrame);
}
// Special routine to handle placing a list of frames into a block
// frame that has first-line style. The routine ensures that the first
// collection of inline frames end up in a first-line frame.
nsresult
nsCSSFrameConstructor::WrapFramesInFirstLineFrame(
nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aFrame,
nsFrameItems& aFrameItems)
{
nsresult rv = NS_OK;
// Find the first and last inline frame in aFrameItems
nsIFrame* kid = aFrameItems.childList;
nsIFrame* firstInlineFrame = nsnull;
nsIFrame* lastInlineFrame = nsnull;
while (kid) {
if (IsInlineFrame(kid)) {
if (!firstInlineFrame) firstInlineFrame = kid;
lastInlineFrame = kid;
}
else {
break;
}
kid->GetNextSibling(&kid);
}
// If we don't find any inline frames, then there is nothing to do
if (!firstInlineFrame) {
return rv;
}
// Create line frame
nsCOMPtr<nsIStyleContext> parentStyle;
aFrame->GetStyleContext(getter_AddRefs(parentStyle));
nsCOMPtr<nsIStyleContext> firstLineStyle(
getter_AddRefs(GetFirstLineStyle(aPresContext, aContent, parentStyle))
);
nsIFrame* lineFrame;
rv = NS_NewFirstLineFrame(aPresShell, &lineFrame);
if (NS_SUCCEEDED(rv)) {
// Initialize the line frame
rv = InitAndRestoreFrame(aPresContext, aState, aContent,
aFrame, firstLineStyle, nsnull, lineFrame);
// Mangle the list of frames we are giving to the block: first
// chop the list in two after lastInlineFrame
nsIFrame* secondBlockFrame;
lastInlineFrame->GetNextSibling(&secondBlockFrame);
lastInlineFrame->SetNextSibling(nsnull);
// The lineFrame will be the block's first child; the rest of the
// frame list (after lastInlineFrame) will be the second and
// subsequent children; join the list together and reset
// aFrameItems appropriately.
if (secondBlockFrame) {
lineFrame->SetNextSibling(secondBlockFrame);
}
if (aFrameItems.childList == lastInlineFrame) {
// Just in case the block had exactly one inline child
aFrameItems.lastChild = lineFrame;
}
aFrameItems.childList = lineFrame;
// Give the inline frames to the lineFrame <b>after</b> reparenting them
kid = firstInlineFrame;
while (kid) {
ReparentFrame(aPresContext, lineFrame, firstLineStyle, kid);
kid->GetNextSibling(&kid);
}
lineFrame->SetInitialChildList(aPresContext, nsnull, firstInlineFrame);
}
return rv;
}
// Special routine to handle appending a new frame to a block frame's
// child list. Takes care of placing the new frame into the right
// place when first-line style is present.
nsresult
nsCSSFrameConstructor::AppendFirstLineFrames(
nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aBlockFrame,
nsFrameItems& aFrameItems)
{
// It's possible that aBlockFrame needs to have a first-line frame
// created because it doesn't currently have any children.
nsIFrame* blockKid;
aBlockFrame->FirstChild(aPresContext, nsnull, &blockKid);
if (!blockKid) {
return WrapFramesInFirstLineFrame(aPresShell, aPresContext, aState, aContent,
aBlockFrame, aFrameItems);
}
// Examine the last block child - if it's a first-line frame then
// appended frames need special treatment.
nsresult rv = NS_OK;
nsFrameList blockFrames(blockKid);
nsIFrame* lastBlockKid = blockFrames.LastChild();
nsCOMPtr<nsIAtom> frameType;
lastBlockKid->GetFrameType(getter_AddRefs(frameType));
if (frameType.get() != nsLayoutAtoms::lineFrame) {
// No first-line frame at the end of the list, therefore there is
// an interveening block between any first-line frame the frames
// we are appending. Therefore, we don't need any special
// treatment of the appended frames.
return rv;
}
nsIFrame* lineFrame = lastBlockKid;
nsCOMPtr<nsIStyleContext> firstLineStyle;
lineFrame->GetStyleContext(getter_AddRefs(firstLineStyle));
// Find the first and last inline frame in aFrameItems
nsIFrame* kid = aFrameItems.childList;
nsIFrame* firstInlineFrame = nsnull;
nsIFrame* lastInlineFrame = nsnull;
while (kid) {
if (IsInlineFrame(kid)) {
if (!firstInlineFrame) firstInlineFrame = kid;
lastInlineFrame = kid;
}
else {
break;
}
kid->GetNextSibling(&kid);
}
// If we don't find any inline frames, then there is nothing to do
if (!firstInlineFrame) {
return rv;
}
// The inline frames get appended to the lineFrame. Make sure they
// are reparented properly.
nsIFrame* remainingFrames;
lastInlineFrame->GetNextSibling(&remainingFrames);
lastInlineFrame->SetNextSibling(nsnull);
kid = firstInlineFrame;
while (kid) {
ReparentFrame(aPresContext, lineFrame, firstLineStyle, kid);
kid->GetNextSibling(&kid);
}
aState.mFrameManager->AppendFrames(aPresContext, *aState.mPresShell,
lineFrame, nsnull, firstInlineFrame);
// The remaining frames get appended to the block frame
if (remainingFrames) {
aFrameItems.childList = remainingFrames;
}
else {
aFrameItems.childList = nsnull;
aFrameItems.lastChild = nsnull;
}
return rv;
}
// Special routine to handle inserting a new frame into a block
// frame's child list. Takes care of placing the new frame into the
// right place when first-line style is present.
nsresult
nsCSSFrameConstructor::InsertFirstLineFrames(
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aBlockFrame,
nsIFrame** aParentFrame,
nsIFrame* aPrevSibling,
nsFrameItems& aFrameItems)
{
nsresult rv = NS_OK;
#if 0
nsIFrame* parentFrame = *aParentFrame;
nsIFrame* newFrame = aFrameItems.childList;
PRBool isInline = IsInlineFrame(newFrame);
if (!aPrevSibling) {
// Insertion will become the first frame. Two cases: we either
// already have a first-line frame or we don't.
nsIFrame* firstBlockKid;
aBlockFrame->FirstChild(nsnull, &firstBlockKid);
nsCOMPtr<nsIAtom> frameType;
firstBlockKid->GetFrameType(getter_AddRefs(frameType));
if (frameType.get() == nsLayoutAtoms::lineFrame) {
// We already have a first-line frame
nsIFrame* lineFrame = firstBlockKid;
nsCOMPtr<nsIStyleContext> firstLineStyle;
lineFrame->GetStyleContext(getter_AddRefs(firstLineStyle));
if (isInline) {
// Easy case: the new inline frame will go into the lineFrame.
ReparentFrame(aPresContext, lineFrame, firstLineStyle, newFrame);
aState.mFrameManager->InsertFrames(aPresContext, *aState.mPresShell,
lineFrame, nsnull, nsnull,
newFrame);
// Since the frame is going into the lineFrame, don't let it
// go into the block too.
aFrameItems.childList = nsnull;
aFrameItems.lastChild = nsnull;
}
else {
// Harder case: We are about to insert a block level element
// before the first-line frame.
// XXX need a method to steal away frames from the line-frame
}
}
else {
// We do not have a first-line frame
if (isInline) {
// We now need a first-line frame to contain the inline frame.
nsIFrame* lineFrame;
rv = NS_NewFirstLineFrame(&lineFrame);
if (NS_SUCCEEDED(rv)) {
// Lookup first-line style context
nsCOMPtr<nsIStyleContext> parentStyle;
aBlockFrame->GetStyleContext(getter_AddRefs(parentStyle));
nsCOMPtr<nsIStyleContext> firstLineStyle(
getter_AddRefs(GetFirstLineStyle(aPresContext, aContent,
parentStyle))
);
// Initialize the line frame
rv = InitAndRestoreFrame(aPresContext, aState, aContent,
aBlockFrame, firstLineStyle, nsnull, lineFrame);
// Make sure the caller inserts the lineFrame into the
// blocks list of children.
aFrameItems.childList = lineFrame;
aFrameItems.lastChild = lineFrame;
// Give the inline frames to the lineFrame <b>after</b>
// reparenting them
ReparentFrame(aPresContext, lineFrame, firstLineStyle, newFrame);
lineFrame->SetInitialChildList(aPresContext, nsnull, newFrame);
}
}
else {
// Easy case: the regular insertion logic can insert the new
// frame because its a block frame.
}
}
}
else {
// Insertion will not be the first frame.
nsIFrame* prevSiblingParent;
aPrevSibling->GetParent(&prevSiblingParent);
if (prevSiblingParent == aBlockFrame) {
// Easy case: The prev-siblings parent is the block
// frame. Therefore the prev-sibling is not currently in a
// line-frame. Therefore the new frame which is going after it,
// regardless of type, is not going into a line-frame.
}
else {
// If the prevSiblingParent is not the block-frame then it must
// be a line-frame (if it were a letter-frame, that logic would
// already have adjusted the prev-sibling to be the
// letter-frame).
if (isInline) {
// Easy case: the insertion can go where the caller thinks it
// should go (which is into prevSiblingParent).
}
else {
// Block elements don't end up in line-frames, therefore
// change the insertion point to aBlockFrame. However, there
// might be more inline elements following aPrevSibling that
// need to be pulled out of the line-frame and become children
// of the block.
nsIFrame* nextSibling;
aPrevSibling->GetNextSibling(&nextSibling);
nsIFrame* nextLineFrame;
prevSiblingParent->GetNextInFlow(&nextLineFrame);
if (nextSibling || nextLineFrame) {
// Oy. We have work to do. Create a list of the new frames
// that are going into the block by stripping them away from
// the line-frame(s).
nsFrameList list(nextSibling);
if (nextSibling) {
nsLineFrame* lineFrame = (nsLineFrame*) prevSiblingParent;
lineFrame->StealFramesFrom(nextSibling);
}
nsLineFrame* nextLineFrame = (nsLineFrame*) lineFrame;
for (;;) {
nextLineFrame->GetNextInFlow(&nextLineFrame);
if (!nextLineFrame) {
break;
}
nsIFrame* kids;
nextLineFrame->FirstChild(nsnull, &kids);
}
}
else {
// We got lucky: aPrevSibling was the last inline frame in
// the line-frame.
ReparentFrame(aPresContext, aBlockFrame, firstLineStyle, newFrame);
aState.mFrameManager->InsertFrames(aPresContext, *aState.mPresShell,
aBlockFrame, nsnull,
prevSiblingParent, newFrame);
aFrameItems.childList = nsnull;
aFrameItems.lastChild = nsnull;
}
}
}
}
#endif
return rv;
}
//----------------------------------------------------------------------
// First-letter support
// Determine how many characters in the text fragment apply to the
// first letter
static PRInt32
FirstLetterCount(const nsTextFragment* aFragment)
{
PRInt32 count = 0;
PRInt32 firstLetterLength = 0;
PRBool done = PR_FALSE;
PRInt32 i, n = aFragment->GetLength();
for (i = 0; i < n; i++) {
PRUnichar ch = aFragment->CharAt(i);
if (XP_IS_SPACE(ch)) {
if (firstLetterLength) {
done = PR_TRUE;
break;
}
count++;
continue;
}
// XXX I18n
if ((ch == '\'') || (ch == '\"')) {
if (firstLetterLength) {
done = PR_TRUE;
break;
}
// keep looping
firstLetterLength = 1;
}
else {
count++;
done = PR_TRUE;
break;
}
}
return count;
}
static PRBool
NeedFirstLetterContinuation(nsIContent* aContent)
{
NS_PRECONDITION(aContent, "null ptr");
PRBool result = PR_FALSE;
if (aContent) {
nsCOMPtr<nsITextContent> tc(do_QueryInterface(aContent));
if (tc) {
const nsTextFragment* frag = nsnull;
tc->GetText(&frag);
PRInt32 flc = FirstLetterCount(frag);
PRInt32 tl = frag->GetLength();
if (flc < tl) {
result = PR_TRUE;
}
}
}
return result;
}
static PRBool IsFirstLetterContent(nsIContent* aContent)
{
PRBool result = PR_FALSE;
nsCOMPtr<nsITextContent> textContent = do_QueryInterface(aContent);
if (textContent) {
PRInt32 textLength;
textContent->GetTextLength(&textLength);
if (textLength) {
PRBool onlyWhiteSpace;
textContent->IsOnlyWhitespace(&onlyWhiteSpace);
result = !onlyWhiteSpace;
}
}
return result;
}
/**
* Create a letter frame, only make it a floating frame.
*/
void
nsCSSFrameConstructor::CreateFloatingLetterFrame(
nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aTextContent,
nsIFrame* aTextFrame,
nsIContent* aBlockContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsFrameItems& aResult)
{
// Create the first-letter-frame
nsIFrame* letterFrame;
NS_NewFirstLetterFrame(aPresShell, &letterFrame);
InitAndRestoreFrame(aPresContext, aState, aTextContent,
aParentFrame, aStyleContext, nsnull, letterFrame);
// Init the text frame to refer to the letter frame. Make sure we
// get a proper style context for it (the one passed in is for the
// letter frame and will have the float property set on it; the text
// frame shouldn't have that set).
nsCOMPtr<nsIStyleContext> textSC;
aPresContext->ResolveStyleContextFor(aTextContent, aStyleContext, PR_FALSE,
getter_AddRefs(textSC));
InitAndRestoreFrame(aPresContext, aState, aTextContent,
letterFrame, textSC, nsnull, aTextFrame);
// And then give the text frame to the letter frame
letterFrame->SetInitialChildList(aPresContext, nsnull, aTextFrame);
// Now make the placeholder
nsIFrame* placeholderFrame;
CreatePlaceholderFrameFor(aPresShell, aPresContext, aState.mFrameManager, aTextContent,
letterFrame, aStyleContext, aParentFrame,
&placeholderFrame);
// See if we will need to continue the text frame (does it contain
// more than just the first-letter text or not?) If it does, then we
// create (in advance) a continuation frame for it.
nsIFrame* nextTextFrame = nsnull;
if (NeedFirstLetterContinuation(aTextContent)) {
// Create continuation
CreateContinuingFrame(aPresShell, aPresContext, aTextFrame, aParentFrame,
&nextTextFrame);
// Repair the continuations style context
nsCOMPtr<nsIStyleContext> parentStyleContext;
parentStyleContext = getter_AddRefs(aStyleContext->GetParent());
if (parentStyleContext) {
nsCOMPtr<nsIStyleContext> newSC;
aPresContext->ResolveStyleContextFor(aTextContent, parentStyleContext,
PR_FALSE, getter_AddRefs(newSC));
if (newSC) {
nextTextFrame->SetStyleContext(aPresContext, newSC);
}
}
}
// Update the child lists for the frame containing the floating first
// letter frame.
aState.mFloatedItems.AddChild(letterFrame);
aResult.childList = aResult.lastChild = placeholderFrame;
if (nextTextFrame) {
aResult.AddChild(nextTextFrame);
}
}
/**
* Create a new letter frame for aTextFrame. The letter frame will be
* a child of aParentFrame.
*/
nsresult
nsCSSFrameConstructor::CreateLetterFrame(nsIPresShell* aPresShell, nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aTextContent,
nsIFrame* aParentFrame,
nsFrameItems& aResult)
{
nsCOMPtr<nsIContent> parentContent;
aParentFrame->GetContent(getter_AddRefs(parentContent));
// Get style context for the first-letter-frame
nsCOMPtr<nsIStyleContext> parentStyleContext;
aParentFrame->GetStyleContext(getter_AddRefs(parentStyleContext));
if (parentStyleContext) {
// Use content from containing block so that we can actually
// find a matching style rule.
nsCOMPtr<nsIContent> blockContent;
aState.mFloatedItems.containingBlock->GetContent(
getter_AddRefs(blockContent));
// Create first-letter style rule
nsCOMPtr<nsIStyleContext> sc = getter_AddRefs(
GetFirstLetterStyle(aPresContext, blockContent, parentStyleContext));
if (sc) {
// Create a new text frame (the original one will be discarded)
nsIFrame* textFrame;
NS_NewTextFrame(aPresShell, &textFrame);
// Create the right type of first-letter frame
const nsStyleDisplay* display = (const nsStyleDisplay*)
sc->GetStyleData(eStyleStruct_Display);
if (display->IsFloating()) {
// Make a floating first-letter frame
CreateFloatingLetterFrame(aPresShell, aPresContext, aState,
aTextContent, textFrame,
blockContent, aParentFrame,
sc, aResult);
}
else {
// Make an inflow first-letter frame
nsIFrame* letterFrame;
nsresult rv = NS_NewFirstLetterFrame(aPresShell, &letterFrame);
if (NS_SUCCEEDED(rv)) {
// Initialize the first-letter-frame.
letterFrame->Init(aPresContext, aTextContent, aParentFrame,
sc, nsnull);
nsCOMPtr<nsIStyleContext> textSC;
aPresContext->ResolveStyleContextFor(aTextContent, sc, PR_FALSE,
getter_AddRefs(textSC));
InitAndRestoreFrame(aPresContext, aState, aTextContent,
letterFrame, textSC, nsnull, textFrame);
letterFrame->SetInitialChildList(aPresContext, nsnull, textFrame);
aResult.childList = aResult.lastChild = letterFrame;
}
}
}
}
return NS_OK;
}
nsresult
nsCSSFrameConstructor::WrapFramesInFirstLetterFrame(
nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aBlockContent,
nsIFrame* aBlockFrame,
nsFrameItems& aBlockFrames)
{
nsresult rv = NS_OK;
nsIFrame* parentFrame = nsnull;
nsIFrame* textFrame = nsnull;
nsIFrame* prevFrame = nsnull;
nsFrameItems letterFrames;
PRBool stopLooking = PR_FALSE;
rv = WrapFramesInFirstLetterFrame(aPresShell, aPresContext, aState,
aBlockFrame, aBlockFrames.childList,
&parentFrame, &textFrame, &prevFrame,
letterFrames, &stopLooking);
if (NS_FAILED(rv)) {
return rv;
}
if (parentFrame) {
if (parentFrame == aBlockFrame) {
// Text textFrame out of the blocks frame list and substitute the
// letter frame(s) instead.
nsIFrame* nextSibling;
textFrame->GetNextSibling(&nextSibling);
textFrame->SetNextSibling(nsnull);
if (prevFrame) {
prevFrame->SetNextSibling(letterFrames.childList);
}
else {
aBlockFrames.childList = letterFrames.childList;
}
letterFrames.lastChild->SetNextSibling(nextSibling);
// Destroy the old textFrame
textFrame->Destroy(aPresContext);
// Repair lastChild; the only time this needs to happen is when
// the block had one child (the text frame).
if (!nextSibling) {
aBlockFrames.lastChild = letterFrames.lastChild;
}
}
else {
// Take the old textFrame out of the inline parents child list
parentFrame->RemoveFrame(aPresContext, *aState.mPresShell.get(),
nsnull, textFrame);
// Insert in the letter frame(s)
parentFrame->InsertFrames(aPresContext, *aState.mPresShell.get(),
nsnull, prevFrame, letterFrames.childList);
}
}
return rv;
}
nsresult
nsCSSFrameConstructor::WrapFramesInFirstLetterFrame(
nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIFrame* aParentFrame,
nsIFrame* aParentFrameList,
nsIFrame** aModifiedParent,
nsIFrame** aTextFrame,
nsIFrame** aPrevFrame,
nsFrameItems& aLetterFrames,
PRBool* aStopLooking)
{
nsresult rv = NS_OK;
nsIFrame* prevFrame = nsnull;
nsIFrame* frame = aParentFrameList;
while (frame) {
nsIFrame* nextFrame;
frame->GetNextSibling(&nextFrame);
nsCOMPtr<nsIAtom> frameType;
frame->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::textFrame == frameType.get()) {
// Wrap up first-letter content in a letter frame
nsCOMPtr<nsIContent> textContent;
frame->GetContent(getter_AddRefs(textContent));
if (IsFirstLetterContent(textContent)) {
// Create letter frame to wrap up the text
rv = CreateLetterFrame(aPresShell, aPresContext, aState, textContent,
aParentFrame, aLetterFrames);
if (NS_FAILED(rv)) {
return rv;
}
// Provide adjustment information for parent
*aModifiedParent = aParentFrame;
*aTextFrame = frame;
*aPrevFrame = prevFrame;
*aStopLooking = PR_TRUE;
return NS_OK;
}
}
else if ((nsLayoutAtoms::inlineFrame == frameType.get()) ||
(nsLayoutAtoms::lineFrame == frameType.get())) {
nsIFrame* kids;
frame->FirstChild(aPresContext, nsnull, &kids);
WrapFramesInFirstLetterFrame(aPresShell, aPresContext, aState, frame, kids,
aModifiedParent, aTextFrame,
aPrevFrame, aLetterFrames, aStopLooking);
if (*aStopLooking) {
return NS_OK;
}
}
else {
// This will stop us looking to create more letter frames. For
// example, maybe the frame-type is "letterFrame" or
// "placeholderFrame". This keeps us from creating extra letter
// frames, and also prevents us from creating letter frames when
// the first real content child of a block is not text (e.g. an
// image, hr, etc.)
*aStopLooking = PR_TRUE;
break;
}
prevFrame = frame;
frame = nextFrame;
}
return rv;
}
nsresult
nsCSSFrameConstructor::RemoveFloatingFirstLetterFrames(
nsIPresContext* aPresContext,
nsIPresShell* aPresShell,
nsIFrameManager* aFrameManager,
nsIFrame* aBlockFrame,
PRBool* aStopLooking)
{
// First look for the floater frame that is a letter frame
nsIFrame* floater;
aBlockFrame->FirstChild(aPresContext, nsLayoutAtoms::floaterList, &floater);
while (floater) {
// See if we found a floating letter frame
nsCOMPtr<nsIAtom> frameType;
floater->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::letterFrame == frameType.get()) {
break;
}
floater->GetNextSibling(&floater);
}
if (!floater) {
// No such frame
return NS_OK;
}
// Take the text frame away from the letter frame (so it isn't
// destroyed when we destroy the letter frame).
nsIFrame* textFrame;
floater->FirstChild(aPresContext, nsnull, &textFrame);
if (!textFrame) {
return NS_OK;
}
// Discover the placeholder frame for the letter frame
nsIFrame* parentFrame;
nsIFrame* placeholderFrame;
aFrameManager->GetPlaceholderFrameFor(floater, &placeholderFrame);
if (!placeholderFrame) {
// Somethings really wrong
return NS_OK;
}
placeholderFrame->GetParent(&parentFrame);
if (!parentFrame) {
// Somethings really wrong
return NS_OK;
}
// Create a new text frame with the right style context that maps
// all of the content that was previously part of the letter frame
// (and probably continued elsewhere).
nsCOMPtr<nsIStyleContext> parentSC;
parentFrame->GetStyleContext(getter_AddRefs(parentSC));
if (!parentSC) {
return NS_OK;
}
nsCOMPtr<nsIContent> textContent;
textFrame->GetContent(getter_AddRefs(textContent));
if (!textContent) {
return NS_OK;
}
nsCOMPtr<nsIStyleContext> newSC;
aPresContext->ResolveStyleContextFor(textContent, parentSC,
PR_FALSE,
getter_AddRefs(newSC));
if (!newSC) {
return NS_OK;
}
nsIFrame* newTextFrame;
nsresult rv = NS_NewTextFrame(aPresShell, &newTextFrame);
if (NS_FAILED(rv)) {
return rv;
}
newTextFrame->Init(aPresContext, textContent, parentFrame, newSC, nsnull);
// Destroy the old text frame's continuations (the old text frame
// will be destroyed when its letter frame is destroyed).
nsIFrame* nextTextFrame;
textFrame->GetNextInFlow(&nextTextFrame);
if (nextTextFrame) {
nsIFrame* nextTextParent;
nextTextFrame->GetParent(&nextTextParent);
if (nextTextParent) {
nsSplittableFrame::BreakFromPrevFlow(nextTextFrame);
aFrameManager->RemoveFrame(aPresContext, *aPresShell, nextTextParent,
nsnull, nextTextFrame);
}
}
// First find out where (in the content) the placeholder frames
// text is and its previous sibling frame, if any.
nsIFrame* prevSibling = nsnull;
nsCOMPtr<nsIContent> container;
parentFrame->GetContent(getter_AddRefs(container));
if (container.get() && textContent.get()) {
PRInt32 ix = 0;
container->IndexOf(textContent, ix);
prevSibling = FindPreviousSibling(aPresShell, container, ix);
}
// Now that everything is set...
#ifdef NOISY_FIRST_LETTER
printf("RemoveFloatingFirstLetterFrames: textContent=%p oldTextFrame=%p newTextFrame=%p\n",
textContent.get(), textFrame, newTextFrame);
#endif
aFrameManager->SetPlaceholderFrameFor(floater, nsnull);
aFrameManager->SetPrimaryFrameFor(textContent, nsnull);
// Remove the floater frame
aFrameManager->RemoveFrame(aPresContext, *aPresShell,
aBlockFrame, nsLayoutAtoms::floaterList,
floater);
// Remove placeholder frame
aFrameManager->RemoveFrame(aPresContext, *aPresShell,
parentFrame, nsnull, placeholderFrame);
// Insert text frame in its place
aFrameManager->InsertFrames(aPresContext, *aPresShell, parentFrame, nsnull,
prevSibling, newTextFrame);
return NS_OK;
}
nsresult
nsCSSFrameConstructor::RemoveFirstLetterFrames(nsIPresContext* aPresContext,
nsIPresShell* aPresShell,
nsIFrameManager* aFrameManager,
nsIFrame* aFrame,
PRBool* aStopLooking)
{
nsIFrame* kid;
nsIFrame* prevSibling = nsnull;
aFrame->FirstChild(aPresContext, nsnull, &kid);
while (kid) {
nsCOMPtr<nsIAtom> frameType;
kid->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::letterFrame == frameType.get()) {
// Bingo. Found it. First steal away the text frame.
nsIFrame* textFrame;
kid->FirstChild(aPresContext, nsnull, &textFrame);
if (!textFrame) {
break;
}
// Create a new textframe
nsCOMPtr<nsIStyleContext> parentSC;
aFrame->GetStyleContext(getter_AddRefs(parentSC));
if (!parentSC) {
break;
}
nsCOMPtr<nsIContent> textContent;
textFrame->GetContent(getter_AddRefs(textContent));
if (!textContent) {
break;
}
nsCOMPtr<nsIStyleContext> newSC;
aPresContext->ResolveStyleContextFor(textContent, parentSC,
PR_FALSE,
getter_AddRefs(newSC));
if (!newSC) {
break;
}
NS_NewTextFrame(aPresShell, &textFrame);
textFrame->Init(aPresContext, textContent, aFrame, newSC, nsnull);
// Next rip out the kid and replace it with the text frame
nsIFrameManager* frameManager = aFrameManager;
frameManager->SetPrimaryFrameFor(textContent, nsnull);
frameManager->RemoveFrame(aPresContext, *aPresShell,
aFrame, nsnull, kid);
// Insert text frame in its place
frameManager->InsertFrames(aPresContext, *aPresShell, aFrame, nsnull,
prevSibling, textFrame);
*aStopLooking = PR_TRUE;
break;
}
else if ((nsLayoutAtoms::inlineFrame == frameType.get()) ||
(nsLayoutAtoms::lineFrame == frameType.get())) {
// Look inside child inline frame for the letter frame
RemoveFirstLetterFrames(aPresContext, aPresShell, aFrameManager, kid,
aStopLooking);
if (*aStopLooking) {
break;
}
}
prevSibling = kid;
kid->GetNextSibling(&kid);
}
return NS_OK;
}
nsresult
nsCSSFrameConstructor::RemoveLetterFrames(nsIPresContext* aPresContext,
nsIPresShell* aPresShell,
nsIFrameManager* aFrameManager,
nsIFrame* aBlockFrame)
{
PRBool stopLooking = PR_FALSE;
nsresult rv = RemoveFloatingFirstLetterFrames(aPresContext, aPresShell,
aFrameManager,
aBlockFrame, &stopLooking);
if (NS_SUCCEEDED(rv) && !stopLooking) {
rv = RemoveFirstLetterFrames(aPresContext, aPresShell, aFrameManager,
aBlockFrame, &stopLooking);
}
return rv;
}
// Fixup the letter frame situation for the given block
nsresult
nsCSSFrameConstructor::RecoverLetterFrames(nsIPresShell* aPresShell, nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIFrame* aBlockFrame)
{
nsresult rv = NS_OK;
nsIFrame* blockKids;
aBlockFrame->FirstChild(aPresContext, nsnull, &blockKids);
nsIFrame* parentFrame = nsnull;
nsIFrame* textFrame = nsnull;
nsIFrame* prevFrame = nsnull;
nsFrameItems letterFrames;
PRBool stopLooking = PR_FALSE;
rv = WrapFramesInFirstLetterFrame(aPresShell, aPresContext, aState,
aBlockFrame, blockKids,
&parentFrame, &textFrame, &prevFrame,
letterFrames, &stopLooking);
if (NS_FAILED(rv)) {
return rv;
}
if (parentFrame) {
// Take the old textFrame out of the parents child list
parentFrame->RemoveFrame(aPresContext, *aState.mPresShell.get(),
nsnull, textFrame);
// Insert in the letter frame(s)
parentFrame->InsertFrames(aPresContext, *aState.mPresShell.get(),
nsnull, prevFrame, letterFrames.childList);
// Insert in floaters too if needed
if (aState.mFloatedItems.childList) {
aBlockFrame->AppendFrames(aPresContext, *aState.mPresShell.get(),
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
}
return rv;
}
//----------------------------------------------------------------------
// Tree Widget Routines
NS_IMETHODIMP
nsCSSFrameConstructor::CreateTreeWidgetContent(nsIPresContext* aPresContext,
nsIFrame* aParentFrame,
nsIFrame* aPrevFrame,
nsIContent* aChild,
nsIFrame** aNewFrame,
PRBool aIsAppend,
PRBool aIsScrollbar,
nsILayoutHistoryState* aFrameState)
{
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsresult rv = NS_OK;
// Construct a new frame
if (nsnull != aParentFrame) {
nsFrameItems frameItems;
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
GetAbsoluteContainingBlock(aPresContext, aParentFrame),
GetFloaterContainingBlock(aPresContext, aParentFrame),
mTempFrameTreeState);
// Get the element's tag
nsCOMPtr<nsIAtom> tag;
aChild->GetTag(*getter_AddRefs(tag));
nsCOMPtr<nsIStyleContext> styleContext;
rv = ResolveStyleContext(aPresContext, aParentFrame, aChild, tag, getter_AddRefs(styleContext));
if (NS_SUCCEEDED(rv)) {
// Pre-check for display "none" - only if we find that, do we create
// any frame at all
const nsStyleDisplay* display = (const nsStyleDisplay*)
styleContext->GetStyleData(eStyleStruct_Display);
if (NS_STYLE_DISPLAY_NONE == display->mDisplay) {
*aNewFrame = nsnull;
return NS_OK;
}
}
rv = ConstructFrame(shell, aPresContext, state, aChild, aParentFrame, frameItems);
nsIFrame* newFrame = frameItems.childList;
*aNewFrame = newFrame;
if (NS_SUCCEEDED(rv) && (nsnull != newFrame)) {
// Notify the parent frame
if (aIsScrollbar)
((nsTreeRowGroupFrame*)aParentFrame)->SetScrollbarFrame(aPresContext, newFrame);
else if (aIsAppend)
rv = ((nsTreeRowGroupFrame*)aParentFrame)->TreeAppendFrames(newFrame);
else
rv = ((nsTreeRowGroupFrame*)aParentFrame)->TreeInsertFrames(aPrevFrame, newFrame);
// If there are new absolutely positioned child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mAbsoluteItems.childList) {
rv = state.mAbsoluteItems.containingBlock->AppendFrames(aPresContext, *shell,
nsLayoutAtoms::absoluteList,
state.mAbsoluteItems.childList);
}
// If there are new fixed positioned child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mFixedItems.childList) {
rv = state.mFixedItems.containingBlock->AppendFrames(aPresContext, *shell,
nsLayoutAtoms::fixedList,
state.mFixedItems.childList);
}
// If there are new floating child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mFloatedItems.childList) {
rv = state.mFloatedItems.containingBlock->AppendFrames(aPresContext, *shell,
nsLayoutAtoms::floaterList,
state.mFloatedItems.childList);
}
}
}
return rv;
}
//----------------------------------------------------------------------
// Block/inline frame construction logic. We maintain a few invariants here:
//
// 1. Block frames contain block and inline frames.
//
// 2. Inline frames only contain inline frames. If an inline parent has a block
// child then the block child is migrated upward until it lands in a block
// parent (the inline frames containing block is where it will end up).
// XXX consolidate these things
static PRBool
IsBlockFrame(nsIPresContext* aPresContext, nsIFrame* aFrame)
{
const nsStyleDisplay* display;
aFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&) display);
if (NS_STYLE_DISPLAY_INLINE == display->mDisplay) {
return PR_FALSE;
}
return PR_TRUE;
}
static nsIFrame*
FindFirstBlock(nsIPresContext* aPresContext, nsIFrame* aKid, nsIFrame** aPrevKid)
{
nsIFrame* prevKid = nsnull;
while (aKid) {
if (IsBlockFrame(aPresContext, aKid)) {
*aPrevKid = prevKid;
return aKid;
}
prevKid = aKid;
aKid->GetNextSibling(&aKid);
}
*aPrevKid = nsnull;
return nsnull;
}
static nsIFrame*
FindLastBlock(nsIPresContext* aPresContext, nsIFrame* aKid)
{
nsIFrame* lastBlock = nsnull;
while (aKid) {
if (IsBlockFrame(aPresContext, aKid)) {
lastBlock = aKid;
}
aKid->GetNextSibling(&aKid);
}
return lastBlock;
}
static nsresult
MoveChildrenTo(nsIPresContext* aPresContext,
nsIStyleContext* aNewParentSC,
nsIFrame* aNewParent,
nsIFrame* aFrameList)
{
while (aFrameList) {
aFrameList->SetParent(aNewParent);
aFrameList->GetNextSibling(&aFrameList);
}
return NS_OK;
}
//----------------------------------------
nsresult
nsCSSFrameConstructor::ConstructBlock(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
const nsStyleDisplay* aDisplay,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame* aNewFrame)
{
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, aNewFrame);
// See if we need to create a view, e.g. the frame is absolutely positioned
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, aNewFrame,
aStyleContext, PR_FALSE);
// See if the block has first-letter style applied to it...
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
// Process the child content
nsFrameItems childItems;
nsFrameConstructorSaveState floaterSaveState;
aState.PushFloaterContainingBlock(aNewFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
nsresult rv = ProcessBlockChildren(aPresShell, aPresContext, aState, aContent, aNewFrame,
PR_TRUE, childItems, PR_TRUE);
// Set the frame's initial child list
aNewFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
// Set the frame's floater list if there were any floated children
if (aState.mFloatedItems.childList) {
aNewFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ProcessBlockChildren(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aFrame,
PRBool aCanHaveGeneratedContent,
nsFrameItems& aFrameItems,
PRBool aParentIsBlock)
{
nsresult rv = NS_OK;
nsCOMPtr<nsIStyleContext> styleContext;
if (aCanHaveGeneratedContent) {
// Probe for generated content before
nsIFrame* generatedFrame;
aFrame->GetStyleContext(getter_AddRefs(styleContext));
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, aFrame, aContent,
styleContext, nsCSSAtoms::beforePseudo,
aParentIsBlock, &generatedFrame)) {
// Add the generated frame to the child list
aFrameItems.AddChild(generatedFrame);
}
}
// Iterate the child content objects and construct frames
PRInt32 count;
aContent->ChildCount(count);
for (PRInt32 i = 0; i < count; i++) {
nsCOMPtr<nsIContent> childContent;
if (NS_SUCCEEDED(aContent->ChildAt(i, *getter_AddRefs(childContent)))) {
// Construct a child frame
rv = ConstructFrame(aPresShell, aPresContext, aState, childContent, aFrame, aFrameItems);
if (NS_FAILED(rv)) {
return rv;
}
}
}
if (aCanHaveGeneratedContent) {
// Probe for generated content after
nsIFrame* generatedFrame;
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, aFrame, aContent,
styleContext, nsCSSAtoms::afterPseudo,
aParentIsBlock, &generatedFrame)) {
// Add the generated frame to the child list
aFrameItems.AddChild(generatedFrame);
}
}
if (aParentIsBlock) {
if (aState.mFirstLetterStyle) {
rv = WrapFramesInFirstLetterFrame(aPresShell, aPresContext, aState, aContent, aFrame, aFrameItems);
}
if (aState.mFirstLineStyle) {
rv = WrapFramesInFirstLineFrame(aPresShell, aPresContext, aState, aContent, aFrame, aFrameItems);
}
}
return rv;
}
// When inline frames get weird and have block frames in them, we
// annotate them to help us respond to incremental content changes
// more easily.
static void
DestroyInlineFrameAnnotation(nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIAtom* aPropertyName,
void* aPropertyValue)
{
}
PRBool
nsCSSFrameConstructor::IsFrameSpecial(nsIFrameManager* aFrameManager, nsIFrame* aFrame)
{
void* value;
nsresult rv = aFrameManager->GetFrameProperty(aFrame, nsLayoutAtoms::inlineFrameAnnotation, 0, &value);
if (NS_OK == rv) {
return PR_TRUE;
}
return PR_FALSE;
}
PRBool
nsCSSFrameConstructor::IsFrameSpecial(nsIPresContext* aPresContext, nsIFrame* aFrame)
{
// Get to aFrame's first-in-flow; only the first-in-flow is marked
// with an annotation.
nsSplittableType splits;
aFrame->IsSplittable(splits);
if (splits != NS_FRAME_NOT_SPLITTABLE) {
nsIFrame* prevInFlow = aFrame;
while (prevInFlow) {
aFrame = prevInFlow;
prevInFlow->GetPrevInFlow(&prevInFlow);
}
}
PRBool result = PR_FALSE;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
if (shell) {
nsCOMPtr<nsIFrameManager> frameManager;
shell->GetFrameManager(getter_AddRefs(frameManager));
if (frameManager) {
void* value;
nsresult rv = frameManager->GetFrameProperty(aFrame, nsLayoutAtoms::inlineFrameAnnotation,
0, &value);
if (NS_OK == rv) {
result = PR_TRUE;
}
}
}
return result;
}
void
nsCSSFrameConstructor::SetFrameIsSpecial(nsIFrameManager* aFrameManager, nsIFrame* aFrame)
{
aFrameManager->SetFrameProperty(aFrame, nsLayoutAtoms::inlineFrameAnnotation,
(void*) PR_TRUE, DestroyInlineFrameAnnotation);
}
PRBool
nsCSSFrameConstructor::AreAllKidsInline(nsIFrame* aFrameList)
{
nsIFrame* kid = aFrameList;
while (kid) {
if (!IsInlineFrame(kid)) {
return PR_FALSE;
}
kid->GetNextSibling(&kid);
}
return PR_TRUE;
}
nsresult
nsCSSFrameConstructor::ConstructInline(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
const nsStyleDisplay* aDisplay,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame* aNewFrame,
nsIFrame** aNewBlockFrame,
nsIFrame** aNextInlineFrame)
{
// Initialize the frame
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, aNewFrame);
// Process the child content
nsFrameItems childItems;
PRBool kidsAllInline;
nsresult rv = ProcessInlineChildren(aPresShell, aPresContext, aState, aContent,
aNewFrame, PR_TRUE, childItems, &kidsAllInline);
if (kidsAllInline) {
// Set the inline frame's initial child list
aNewFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
*aNewBlockFrame = nsnull;
*aNextInlineFrame = nsnull;
return rv;
}
// This inline frame contains several types of children. Therefore
// this frame has to be chopped into several pieces. We will produce
// as a result of this 3 lists of children. The first list contains
// all of the inline children that preceed the first block child
// (and may be empty). The second list contains all of the block
// children and any inlines that are between them (and must not be
// empty, otherwise - why are we here?). The final list contains all
// of the inline children that follow the final block child.
// Find the first block child which defines list1 and list2
nsIFrame* list1 = childItems.childList;
nsIFrame* prevToFirstBlock;
nsIFrame* list2 = FindFirstBlock(aPresContext, list1, &prevToFirstBlock);
if (prevToFirstBlock) {
prevToFirstBlock->SetNextSibling(nsnull);
}
else {
list1 = nsnull;
}
// Find the last block child which defines the end of list2 and the
// start of list3
nsIFrame* afterFirstBlock;
list2->GetNextSibling(&afterFirstBlock);
nsIFrame* list3 = nsnull;
nsIFrame* lastBlock = FindLastBlock(aPresContext, afterFirstBlock);
if (!lastBlock) {
lastBlock = list2;
}
lastBlock->GetNextSibling(&list3);
lastBlock->SetNextSibling(nsnull);
// list1's frames belong to this inline frame so go ahead and take them
aNewFrame->SetInitialChildList(aPresContext, nsnull, list1);
// list2's frames belong to an anonymous block that we create right
// now. The anonymous block will be the parent of the block children
// of the inline.
nsIFrame* blockFrame;
NS_NewBlockFrame(aPresShell, &blockFrame);
nsCOMPtr<nsIStyleContext> blockSC;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::mozAnonymousBlock,
aStyleContext, PR_FALSE,
getter_AddRefs(blockSC));
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, blockSC, nsnull, blockFrame);
MoveChildrenTo(aPresContext, blockSC, blockFrame, list2);
blockFrame->SetInitialChildList(aPresContext, nsnull, list2);
// list3's frames belong to another inline frame
nsIFrame* inlineFrame = nsnull;
NS_NewInlineFrame(aPresShell, &inlineFrame);
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, inlineFrame);
if (list3) {
// Reparent (cheaply) the frames in list3 - we don't have to futz
// with their style context because they already have the right one.
nsFrameList list;
list.AppendFrames(inlineFrame, list3);
}
inlineFrame->SetInitialChildList(aPresContext, nsnull, list3);
// Mark the 3 frames as special. That way if any of the
// append/insert/remove methods try to fiddle with the children, the
// containing block will be reframed instead.
SetFrameIsSpecial(aState.mFrameManager, aNewFrame);
SetFrameIsSpecial(aState.mFrameManager, blockFrame);
SetFrameIsSpecial(aState.mFrameManager, inlineFrame);
#ifdef DEBUG
if (gNoisyInlineConstruction) {
nsIFrameDebug* frameDebug;
printf("nsCSSFrameConstructor::ConstructInline:\n");
if (NS_SUCCEEDED(aNewFrame->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) {
printf(" ==> leading inline frame:\n");
frameDebug->List(aPresContext, stdout, 2);
}
if (NS_SUCCEEDED(blockFrame->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) {
printf(" ==> block frame:\n");
frameDebug->List(aPresContext, stdout, 2);
}
if (NS_SUCCEEDED(inlineFrame->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) {
printf(" ==> trailing inline frame:\n");
frameDebug->List(aPresContext, stdout, 2);
}
}
#endif
*aNewBlockFrame = blockFrame;
*aNextInlineFrame = inlineFrame;
return rv;
}
nsresult
nsCSSFrameConstructor::ProcessInlineChildren(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aFrame,
PRBool aCanHaveGeneratedContent,
nsFrameItems& aFrameItems,
PRBool* aKidsAllInline)
{
nsresult rv = NS_OK;
nsCOMPtr<nsIStyleContext> styleContext;
if (aCanHaveGeneratedContent) {
// Probe for generated content before
nsIFrame* generatedFrame;
aFrame->GetStyleContext(getter_AddRefs(styleContext));
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, aFrame, aContent,
styleContext, nsCSSAtoms::beforePseudo,
PR_FALSE, &generatedFrame)) {
// Add the generated frame to the child list
aFrameItems.AddChild(generatedFrame);
}
}
// Iterate the child content objects and construct frames
PRBool allKidsInline = PR_TRUE;
PRInt32 count;
aContent->ChildCount(count);
for (PRInt32 i = 0; i < count; i++) {
nsCOMPtr<nsIContent> childContent;
if (NS_SUCCEEDED(aContent->ChildAt(i, *getter_AddRefs(childContent)))) {
// Construct a child frame
nsIFrame* oldLastChild = aFrameItems.lastChild;
rv = ConstructFrame(aPresShell, aPresContext, aState, childContent, aFrame, aFrameItems);
if (NS_FAILED(rv)) {
return rv;
}
// Examine newly added children (we may have added more than one
// child if the child was another inline frame that ends up
// being carved in 3 pieces) to maintain the allKidsInline flag.
if (allKidsInline) {
nsIFrame* kid;
if (oldLastChild) {
oldLastChild->GetNextSibling(&kid);
}
else {
kid = aFrameItems.childList;
}
while (kid) {
if (!IsInlineFrame(kid)) {
allKidsInline = PR_FALSE;
break;
}
kid->GetNextSibling(&kid);
}
}
}
}
if (aCanHaveGeneratedContent) {
// Probe for generated content after
nsIFrame* generatedFrame;
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, aFrame, aContent,
styleContext, nsCSSAtoms::afterPseudo,
PR_FALSE, &generatedFrame)) {
// Add the generated frame to the child list
aFrameItems.AddChild(generatedFrame);
}
}
*aKidsAllInline = allKidsInline;
return rv;
}
// Helper function that recursively removes content to frame mappings and
// undisplayed content mappings.
// This differs from DeletingFrameSubtree() because the frames have not yet been
// added to the frame hierarchy
static void
DoCleanupFrameReferences(nsIPresContext* aPresContext,
nsIFrameManager* aFrameManager,
nsIFrame* aFrame)
{
nsCOMPtr<nsIContent> content;
aFrame->GetContent(getter_AddRefs(content));
// Remove the mapping from the content object to its frame
aFrameManager->SetPrimaryFrameFor(content, nsnull);
aFrameManager->ClearAllUndisplayedContentIn(content);
// Recursively walk the child frames.
// Note: we only need to look at the principal child list
nsIFrame* childFrame;
aFrame->FirstChild(aPresContext, nsnull, &childFrame);
while (childFrame) {
DoCleanupFrameReferences(aPresContext, aFrameManager, childFrame);
// Get the next sibling child frame
childFrame->GetNextSibling(&childFrame);
}
}
// Helper function that walks a frame list and calls DoCleanupFrameReference()
static void
CleanupFrameReferences(nsIPresContext* aPresContext,
nsIFrameManager* aFrameManager,
nsIFrame* aFrameList)
{
while (aFrameList) {
DoCleanupFrameReferences(aPresContext, aFrameManager, aFrameList);
// Get the sibling frame
aFrameList->GetNextSibling(&aFrameList);
}
}
PRBool
nsCSSFrameConstructor::WipeContainingBlock(nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aBlockContent,
nsIFrame* aFrame,
nsIFrame* aFrameList)
{
// Before we go and append the frames, check for a special
// situation: an inline frame that will now contain block
// frames. This is a no-no and the frame construction logic knows
// how to fix this.
const nsStyleDisplay* parentDisplay;
aFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&) parentDisplay);
if (NS_STYLE_DISPLAY_INLINE == parentDisplay->mDisplay) {
if (!AreAllKidsInline(aFrameList)) {
// Ok, reverse tracks: wipe out the frames we just created
nsCOMPtr<nsIPresShell> presShell;
nsCOMPtr<nsIFrameManager> frameManager;
aPresContext->GetShell(getter_AddRefs(presShell));
presShell->GetFrameManager(getter_AddRefs(frameManager));
// Destroy the frames. As we do make sure any content to frame mappings
// or entries in the undisplayed content map are removed
CleanupFrameReferences(aPresContext, frameManager, aFrameList);
nsFrameList tmp(aFrameList);
tmp.DestroyFrames(aPresContext);
if (aState.mAbsoluteItems.childList) {
CleanupFrameReferences(aPresContext, frameManager, aState.mAbsoluteItems.childList);
tmp.SetFrames(aState.mAbsoluteItems.childList);
tmp.DestroyFrames(aPresContext);
}
if (aState.mFixedItems.childList) {
CleanupFrameReferences(aPresContext, frameManager, aState.mFixedItems.childList);
tmp.SetFrames(aState.mFixedItems.childList);
tmp.DestroyFrames(aPresContext);
}
if (aState.mFloatedItems.childList) {
CleanupFrameReferences(aPresContext, frameManager, aState.mFloatedItems.childList);
tmp.SetFrames(aState.mFloatedItems.childList);
tmp.DestroyFrames(aPresContext);
}
// Tell parent of the containing block to reformulate the
// entire block. This is painful and definitely not optimal
// but it will *always* get the right answer.
nsCOMPtr<nsIContent> parentContainer;
aBlockContent->GetParent(*getter_AddRefs(parentContainer));
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::WipeContainingBlock: aBlockContent=%p parentContainer=%p\n",
aBlockContent, parentContainer.get());
}
#endif
if (parentContainer) {
PRInt32 ix;
parentContainer->IndexOf(aBlockContent, ix);
ContentReplaced(aPresContext, parentContainer, aBlockContent, aBlockContent, ix);
}
else {
// XXX uh oh. the block we need to reframe has no parent!
}
return PR_TRUE;
}
}
return PR_FALSE;
}
nsresult
nsCSSFrameConstructor::ReframeContainingBlock(nsIPresContext* aPresContext, nsIFrame* aFrame)
{
// Get the parent of the target frame. From there we look for the
// containing block in case the target frame is already a block
// (which can happen when an inline frame wraps some of its content
// in an anonymous block; see ConstructInline)
nsIFrame* parentFrame;
aFrame->GetParent(&parentFrame);
if (!parentFrame) {
return RecreateEntireFrameTree(aPresContext);
}
// Now find the containing block
nsIFrame* containingBlock = GetFloaterContainingBlock(aPresContext, parentFrame);
if (!containingBlock) {
return RecreateEntireFrameTree(aPresContext);
}
// And get the containingBlock's content
nsCOMPtr<nsIContent> blockContent;
containingBlock->GetContent(getter_AddRefs(blockContent));
if (!blockContent) {
return RecreateEntireFrameTree(aPresContext);
}
// Now find the containingBlock's content's parent
nsCOMPtr<nsIContent> parentContainer;
blockContent->GetParent(*getter_AddRefs(parentContainer));
if (!parentContainer) {
return RecreateEntireFrameTree(aPresContext);
}
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf(" ==> blockContent=%p, parentContainer=%p\n",
blockContent.get(), parentContainer.get());
}
#endif
PRInt32 ix;
parentContainer->IndexOf(blockContent, ix);
nsresult rv = ContentReplaced(aPresContext, parentContainer, blockContent, blockContent, ix);
return rv;
}
nsresult
nsCSSFrameConstructor::RecreateEntireFrameTree(nsIPresContext* aPresContext)
{
// XXX write me some day
return NS_OK;
}
Reference in New Issue View Git Blame Copy Permalink