mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-14 22:05:44 +00:00
239 lines
7.1 KiB
C++
239 lines
7.1 KiB
C++
/* -*- 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 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
#include "nsPlaceholderFrame.h"
|
|
#include "nsIContent.h"
|
|
#include "nsIContentDelegate.h"
|
|
#include "nsIFloaterContainer.h"
|
|
#include "nsBodyFrame.h"
|
|
#include "nsIStyleContext.h"
|
|
#include "nsCSSLayout.h"
|
|
#include "nsIView.h"
|
|
|
|
static NS_DEFINE_IID(kIFloaterContainerIID, NS_IFLOATERCONTAINER_IID);
|
|
|
|
nsresult
|
|
nsPlaceholderFrame::NewFrame(nsIFrame** aInstancePtrResult,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParent)
|
|
{
|
|
NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
|
|
if (nsnull == aInstancePtrResult) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
nsIFrame* it = new nsPlaceholderFrame(aContent, aParent);
|
|
if (nsnull == it) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
*aInstancePtrResult = it;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsPlaceholderFrame::nsPlaceholderFrame(nsIContent* aContent, nsIFrame* aParent)
|
|
: nsFrame(aContent, aParent)
|
|
{
|
|
mAnchoredItem = nsnull;
|
|
}
|
|
|
|
nsPlaceholderFrame::~nsPlaceholderFrame()
|
|
{
|
|
}
|
|
|
|
NS_METHOD nsPlaceholderFrame::Reflow(nsIPresContext* aPresContext,
|
|
nsReflowMetrics& aDesiredSize,
|
|
const nsReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
// Get the floater container in which we're inserted
|
|
nsIFrame* containingBlock;
|
|
nsIFloaterContainer* container = nsnull;
|
|
|
|
for (containingBlock = mGeometricParent;
|
|
nsnull != containingBlock;
|
|
containingBlock->GetGeometricParent(containingBlock))
|
|
{
|
|
if (NS_OK == containingBlock->QueryInterface(kIFloaterContainerIID, (void**)&container)) {
|
|
break;
|
|
}
|
|
}
|
|
NS_ASSERTION(nsnull != container, "no floater container");
|
|
|
|
// Have we created the anchored item yet?
|
|
if (nsnull == mAnchoredItem) {
|
|
// If the content object is a container then wrap it in a body pseudo-frame
|
|
if (mContent->CanContainChildren()) {
|
|
nsBodyFrame::NewFrame(&mAnchoredItem, mContent, this);
|
|
|
|
// Use our style context for the pseudo-frame
|
|
mAnchoredItem->SetStyleContext(aPresContext, mStyleContext);
|
|
|
|
} else {
|
|
// Create the anchored item
|
|
nsIContentDelegate* delegate = mContent->GetDelegate(aPresContext);
|
|
nsresult rv = delegate->CreateFrame(aPresContext, mContent,
|
|
mGeometricParent, mStyleContext,
|
|
mAnchoredItem);
|
|
NS_RELEASE(delegate);
|
|
if (NS_OK != rv) {
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
// Compute the available space for the floater. Use the default 'auto' width
|
|
// and height values
|
|
nsSize kidAvailSize(0, NS_UNCONSTRAINEDSIZE);
|
|
nsSize styleSize;
|
|
PRIntn styleSizeFlags = nsCSSLayout::GetStyleSize(aPresContext, aReflowState,
|
|
styleSize);
|
|
|
|
// XXX The width and height are for the content area only. Add in space for
|
|
// border and padding
|
|
if (styleSizeFlags & NS_SIZE_HAS_WIDTH) {
|
|
kidAvailSize.width = styleSize.width;
|
|
}
|
|
if (styleSizeFlags & NS_SIZE_HAS_HEIGHT) {
|
|
kidAvailSize.height = styleSize.height;
|
|
}
|
|
|
|
// Resize reflow the anchored item into the available space
|
|
// XXX Check for complete?
|
|
nsReflowMetrics desiredSize(nsnull);
|
|
nsReflowState reflowState(mAnchoredItem, aReflowState, kidAvailSize,
|
|
eReflowReason_Initial);
|
|
mAnchoredItem->WillReflow(*aPresContext);
|
|
mAnchoredItem->Reflow(aPresContext, desiredSize, reflowState, aStatus);
|
|
mAnchoredItem->SizeTo(desiredSize.width, desiredSize.height);
|
|
|
|
// Now notify our containing block that there's a new floater
|
|
container->AddFloater(aPresContext, mAnchoredItem, this);
|
|
mAnchoredItem->DidReflow(*aPresContext, NS_FRAME_REFLOW_FINISHED);
|
|
|
|
} else {
|
|
// XXX This causes anchored-items sizes to get fixed up; this is
|
|
// not quite right because this class should be implementing one
|
|
// of the incremental reflow methods and propagating things down
|
|
// properly to the contained frame.
|
|
nsReflowMetrics desiredSize(nsnull);
|
|
nsReflowState reflowState(mAnchoredItem, aReflowState, aReflowState.maxSize,
|
|
eReflowReason_Resize);
|
|
mAnchoredItem->WillReflow(*aPresContext);
|
|
mAnchoredItem->Reflow(aPresContext, desiredSize, reflowState, aStatus);
|
|
mAnchoredItem->SizeTo(desiredSize.width, desiredSize.height);
|
|
container->PlaceFloater(aPresContext, mAnchoredItem, this);
|
|
mAnchoredItem->DidReflow(*aPresContext, NS_FRAME_REFLOW_FINISHED);
|
|
}
|
|
|
|
return nsFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
|
|
}
|
|
|
|
NS_METHOD
|
|
nsPlaceholderFrame::ChildCount(PRInt32& aChildCount) const
|
|
{
|
|
aChildCount = 1;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_METHOD
|
|
nsPlaceholderFrame::ChildAt(PRInt32 aIndex, nsIFrame*& aFrame) const
|
|
{
|
|
aFrame = (0 == aIndex) ? mAnchoredItem : nsnull;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_METHOD
|
|
nsPlaceholderFrame::IndexOf(const nsIFrame* aChild, PRInt32& aIndex) const
|
|
{
|
|
aIndex = (aChild == mAnchoredItem) ? 0 : -1;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_METHOD
|
|
nsPlaceholderFrame::FirstChild(nsIFrame*& aFirstChild) const
|
|
{
|
|
aFirstChild = mAnchoredItem;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_METHOD
|
|
nsPlaceholderFrame::NextChild(const nsIFrame* aChild, nsIFrame*& aNextChild) const
|
|
{
|
|
aNextChild = nsnull;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_METHOD
|
|
nsPlaceholderFrame::PrevChild(const nsIFrame* aChild, nsIFrame*& aPrevChild) const
|
|
{
|
|
aPrevChild = nsnull;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_METHOD
|
|
nsPlaceholderFrame::LastChild(nsIFrame*& aLastChild) const
|
|
{
|
|
aLastChild = mAnchoredItem;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_METHOD nsPlaceholderFrame::ListTag(FILE* out) const
|
|
{
|
|
fputs("*placeholder", out);
|
|
PRInt32 contentIndex;
|
|
GetContentIndex(contentIndex);
|
|
fprintf(out, "(%d)@%p", contentIndex, this);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_METHOD
|
|
nsPlaceholderFrame::List(FILE* out, PRInt32 aIndent) const
|
|
{
|
|
PRInt32 i;
|
|
|
|
// Indent
|
|
for (i = aIndent; --i >= 0; ) fputs(" ", out);
|
|
|
|
// Output the tag
|
|
ListTag(out);
|
|
nsIView* view;
|
|
GetView(view);
|
|
if (nsnull != view) {
|
|
fprintf(out, " [view=%p]", view);
|
|
NS_RELEASE(view);
|
|
}
|
|
|
|
// Output the rect
|
|
out << mRect;
|
|
|
|
// Output the children
|
|
if (nsnull != mAnchoredItem) {
|
|
if (0 != mState) {
|
|
fprintf(out, " [state=%08x]", mState);
|
|
}
|
|
fputs("<\n", out);
|
|
mAnchoredItem->List(out, aIndent + 1);
|
|
for (i = aIndent; --i >= 0; ) fputs(" ", out);
|
|
fputs(">\n", out);
|
|
} else {
|
|
if (0 != mState) {
|
|
fprintf(out, " [state=%08x]", mState);
|
|
}
|
|
fputs("<>\n", out);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|