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877964fad0
gecko-dev/layout/forms/nsListControlFrame.cpp
mkaply%us.ibm.com 877964fad0 #104792 
r=rods, sr==attinasi
patch from simon montagu - hebrew comboboxes go haywire
2001-10-31 05:17:34 +00:00

4591 lines
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* 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 Communicator client code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the NPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nscore.h"
#include "nsCOMPtr.h"
#include "nsReadableUtils.h"
#include "nsUnicharUtils.h"
#include "nsListControlFrame.h"
#include "nsFormControlFrame.h" // for COMPARE macro
#include "nsFormControlHelper.h"
#include "nsHTMLIIDs.h"
#include "nsHTMLAtoms.h"
#include "nsIHTMLContent.h"
#include "nsIFormControl.h"
#include "nsINameSpaceManager.h"
#include "nsIDeviceContext.h"
#include "nsIDOMHTMLCollection.h"
#include "nsIDOMNSHTMLOptionCollectn.h"
#include "nsIDOMHTMLSelectElement.h"
#include "nsIDOMHTMLOptionElement.h"
#include "nsIComboboxControlFrame.h"
#include "nsIViewManager.h"
#include "nsFormFrame.h"
#include "nsIScrollableView.h"
#include "nsIDOMHTMLOptGroupElement.h"
#include "nsWidgetsCID.h"
#include "nsIReflowCommand.h"
#include "nsIPresShell.h"
#include "nsHTMLParts.h"
#include "nsIDOMEventReceiver.h"
#include "nsIEventStateManager.h"
#include "nsIDOMKeyEvent.h"
#include "nsIDOMMouseEvent.h"
#include "nsIPrivateDOMEvent.h"
#include "nsIStatefulFrame.h"
#include "nsISupportsArray.h"
#include "nsISupportsPrimitives.h"
#include "nsIComponentManager.h"
#include "nsILookAndFeel.h"
#include "nsLayoutAtoms.h"
#include "nsIFontMetrics.h"
#include "nsVoidArray.h"
#include "nsIScrollableFrame.h"
#include "nsIDOMEventTarget.h"
#include "nsGUIEvent.h"
#ifdef ACCESSIBILITY
#include "nsIAccessibilityService.h"
#endif
#include "nsISelectElement.h"
#include "nsIPrivateDOMEvent.h"
// Timer Includes
#include "nsITimer.h"
#include "nsITimerCallback.h"
// Constants
const nscoord kMaxDropDownRows = 20; // This matches the setting for 4.x browsers
const PRInt32 kDefaultMultiselectHeight = 4; // This is compatible with 4.x browsers
const PRInt32 kNothingSelected = -1;
const PRInt32 kMaxZ = 0x7fffffff; //XXX: Shouldn't there be a define somewhere for MaxInt for PRInt32
const PRInt32 kNoSizeSpecified = -1;
//XXX: This is temporary. It simulates psuedo states by using a attribute selector on
// -moz-option-selected in the ua.css style sheet. This will not be needed when
//The event state manager is functional. KMM
//const char * kMozSelected = "-moz-option-selected";
// it is now using "nsLayoutAtoms::optionSelectedPseudo"
//---------------------------------------------------------
nsresult
NS_NewListControlFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
{
NS_PRECONDITION(aNewFrame, "null OUT ptr");
if (nsnull == aNewFrame) {
return NS_ERROR_NULL_POINTER;
}
nsListControlFrame* it = new (aPresShell) nsListControlFrame;
if (!it) {
return NS_ERROR_OUT_OF_MEMORY;
}
#if 0
// set the state flags (if any are provided)
nsFrameState state;
it->GetFrameState( &state );
state |= NS_BLOCK_SPACE_MGR;
it->SetFrameState( state );
#endif
*aNewFrame = it;
return NS_OK;
}
//-----------------------------------------------------------
// Reflow Debugging Macros
// These let us "see" how many reflow counts are happening
//-----------------------------------------------------------
#ifdef DO_REFLOW_COUNTER
#define MAX_REFLOW_CNT 1024
static PRInt32 gTotalReqs = 0;;
static PRInt32 gTotalReflows = 0;;
static PRInt32 gReflowControlCntRQ[MAX_REFLOW_CNT];
static PRInt32 gReflowControlCnt[MAX_REFLOW_CNT];
static PRInt32 gReflowInx = -1;
#define REFLOW_COUNTER() \
if (mReflowId > -1) \
gReflowControlCnt[mReflowId]++;
#define REFLOW_COUNTER_REQUEST() \
if (mReflowId > -1) \
gReflowControlCntRQ[mReflowId]++;
#define REFLOW_COUNTER_DUMP(__desc) \
if (mReflowId > -1) {\
gTotalReqs += gReflowControlCntRQ[mReflowId];\
gTotalReflows += gReflowControlCnt[mReflowId];\
printf("** Id:%5d %s RF: %d RQ: %d %d/%d %5.2f\n", \
mReflowId, (__desc), \
gReflowControlCnt[mReflowId], \
gReflowControlCntRQ[mReflowId],\
gTotalReflows, gTotalReqs, float(gTotalReflows)/float(gTotalReqs)*100.0f);\
}
#define REFLOW_COUNTER_INIT() \
if (gReflowInx < MAX_REFLOW_CNT) { \
gReflowInx++; \
mReflowId = gReflowInx; \
gReflowControlCnt[mReflowId] = 0; \
gReflowControlCntRQ[mReflowId] = 0; \
} else { \
mReflowId = -1; \
}
// reflow messages
#define REFLOW_DEBUG_MSG(_msg1) printf((_msg1))
#define REFLOW_DEBUG_MSG2(_msg1, _msg2) printf((_msg1), (_msg2))
#define REFLOW_DEBUG_MSG3(_msg1, _msg2, _msg3) printf((_msg1), (_msg2), (_msg3))
#define REFLOW_DEBUG_MSG4(_msg1, _msg2, _msg3, _msg4) printf((_msg1), (_msg2), (_msg3), (_msg4))
#else //-------------
#define REFLOW_COUNTER_REQUEST()
#define REFLOW_COUNTER()
#define REFLOW_COUNTER_DUMP(__desc)
#define REFLOW_COUNTER_INIT()
#define REFLOW_DEBUG_MSG(_msg)
#define REFLOW_DEBUG_MSG2(_msg1, _msg2)
#define REFLOW_DEBUG_MSG3(_msg1, _msg2, _msg3)
#define REFLOW_DEBUG_MSG4(_msg1, _msg2, _msg3, _msg4)
#endif
//------------------------------------------
// This is for being VERY noisy
//------------------------------------------
#ifdef DO_VERY_NOISY
#define REFLOW_NOISY_MSG(_msg1) printf((_msg1))
#define REFLOW_NOISY_MSG2(_msg1, _msg2) printf((_msg1), (_msg2))
#define REFLOW_NOISY_MSG3(_msg1, _msg2, _msg3) printf((_msg1), (_msg2), (_msg3))
#define REFLOW_NOISY_MSG4(_msg1, _msg2, _msg3, _msg4) printf((_msg1), (_msg2), (_msg3), (_msg4))
#else
#define REFLOW_NOISY_MSG(_msg)
#define REFLOW_NOISY_MSG2(_msg1, _msg2)
#define REFLOW_NOISY_MSG3(_msg1, _msg2, _msg3)
#define REFLOW_NOISY_MSG4(_msg1, _msg2, _msg3, _msg4)
#endif
//------------------------------------------
// Displays value in pixels or twips
//------------------------------------------
#ifdef DO_PIXELS
#define PX(__v) __v / 15
#else
#define PX(__v) __v
#endif
//------------------------------------------
// Asserts if we return a desired size that
// doesn't correctly match the mComputedWidth
//------------------------------------------
#ifdef DO_UNCONSTRAINED_CHECK
#define UNCONSTRAINED_CHECK() \
if (aReflowState.mComputedWidth != NS_UNCONSTRAINEDSIZE) { \
nscoord width = aDesiredSize.width - borderPadding.left - borderPadding.right; \
if (width != aReflowState.mComputedWidth) { \
printf("aDesiredSize.width %d %d != aReflowState.mComputedWidth %d\n", aDesiredSize.width, width, aReflowState.mComputedWidth); \
} \
NS_ASSERTION(width == aReflowState.mComputedWidth, "Returning bad value when constrained!"); \
}
#else
#define UNCONSTRAINED_CHECK()
#endif
//------------------------------------------------------
//-- Done with macros
//------------------------------------------------------
//---------------------------------------------------
//-- Update Timer Stuff
//---------------------------------------------------
class nsSelectUpdateTimer : public nsITimerCallback
{
public:
NS_DECL_ISUPPORTS
nsSelectUpdateTimer()
: mPresContext(nsnull), mDelay(0), mHasBeenNotified(PR_FALSE),
mItemsAdded(PR_FALSE), mItemsRemoved(PR_FALSE), mItemsInxSet(PR_FALSE),
mRemovedSelectedIndex(PR_FALSE)
{
NS_INIT_ISUPPORTS();
}
virtual ~nsSelectUpdateTimer();
NS_IMETHOD_(void) Notify(nsITimer *timer);
// Additional Methods
nsresult Start(nsIPresContext *aPresContext)
{
mPresContext = aPresContext;
nsresult result = NS_OK;
if (!mTimer) {
mTimer = do_CreateInstance("@mozilla.org/timer;1", &result);
if (NS_FAILED(result))
return result;
} else {
// The time "Init" will addref the listener which is "this" object.
// So if the timer has already been created then the "this" pointer is
// already addef'ed and will be addref'ed again when it is re-inited
// below, so we release here in anticipation of the Init and it's addref
NS_ASSERTION(mRefCnt > 1, "This must always be greater than 1");
NS_RELEASE_THIS();
}
result = mTimer->Init(this, mDelay);
if (mHasBeenNotified) {
mItemsAdded = PR_FALSE;
mItemsRemoved = PR_FALSE;
mItemsInxSet = PR_FALSE;
mHasBeenNotified = PR_FALSE;
mRemovedSelectedIndex = PR_FALSE;
mInxArray.Clear();
}
return result;
}
void Init(nsListControlFrame *aList, PRUint32 aDelay) { mListControl = aList; mDelay = aDelay; }
void Stop() { if (mTimer) mTimer->Cancel(); }
void AdjustIndexes(PRBool aInserted, PRInt32 aInx)
{
// remove the index from the list
if (!aInserted) {
PRInt32 inx = (PRInt32)mInxArray.IndexOf((void*)aInx);
if (inx > -1) {
mInxArray.RemoveElementAt(inx);
}
}
PRInt32 count = mInxArray.Count();
for (PRInt32 i=0;i<count;i++) {
PRInt32 inx = NS_PTR_TO_INT32(mInxArray[i]);
if (inx > aInx) {
mInxArray.ReplaceElementAt((void*)(inx+(aInserted?1:-1)), i);
}
}
}
void ItemAdded(PRInt32 aInx, PRInt32 aNumItems)
{
mItemsAdded = PR_TRUE;
if (mInxArray.Count() > 0 && aInx <= aNumItems-1) {
AdjustIndexes(PR_TRUE, aInx);
}
}
void ItemRemoved(PRInt32 aInx, PRInt32 aNumItems)
{
mItemsRemoved = PR_TRUE;
if (mInxArray.Count() > 0 && aInx <= aNumItems) {
AdjustIndexes(PR_FALSE, aInx);
}
}
void ItemIndexSet(PRInt32 aInx)
{
mItemsInxSet = PR_TRUE;
mInxArray.AppendElement((void*)aInx);
}
PRPackedBool HasBeenNotified() { return mHasBeenNotified; }
void SetRemovedSelectedIndex() { mRemovedSelectedIndex = PR_TRUE; }
PRPackedBool RemovedSelectedIndex() { return mRemovedSelectedIndex; }
private:
nsListControlFrame * mListControl;
nsCOMPtr<nsITimer> mTimer;
nsIPresContext* mPresContext;
PRUint32 mDelay;
PRPackedBool mHasBeenNotified;
PRPackedBool mItemsAdded;
PRPackedBool mItemsRemoved;
PRPackedBool mItemsInxSet;
PRPackedBool mRemovedSelectedIndex;
nsVoidArray mInxArray;
};
NS_IMPL_ADDREF(nsSelectUpdateTimer)
NS_IMPL_RELEASE(nsSelectUpdateTimer)
NS_IMPL_QUERY_INTERFACE1(nsSelectUpdateTimer, nsITimerCallback)
nsresult NS_NewUpdateTimer(nsSelectUpdateTimer **aResult)
{
if (!aResult)
return NS_ERROR_NULL_POINTER;
*aResult = (nsSelectUpdateTimer*) new nsSelectUpdateTimer;
if (!aResult)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(*aResult);
return NS_OK;
}
// nsITimerCallback
NS_IMETHODIMP_(void) nsSelectUpdateTimer::Notify(nsITimer *timer)
{
if (mPresContext && mListControl && !mHasBeenNotified) {
mHasBeenNotified = PR_TRUE;
if (mItemsAdded || mItemsInxSet) {
mListControl->ResetList(mPresContext, &mInxArray);
} else {
mListControl->ItemsHaveBeenRemoved(mPresContext);
}
}
}
nsSelectUpdateTimer::~nsSelectUpdateTimer()
{
if (mTimer) {
mTimer->Cancel();
}
}
//---------------------------------------------------
//-- DONE: Update Timer Stuff
//---------------------------------------------------
//---------------------------------------------------------
nsListControlFrame::nsListControlFrame()
: mWeakReferent(this)
{
mSelectedIndex = kNothingSelected;
mComboboxFrame = nsnull;
mFormFrame = nsnull;
mButtonDown = PR_FALSE;
mMaxWidth = 0;
mMaxHeight = 0;
mPresContext = nsnull;
mEndExtendedIndex = kNothingSelected;
mStartExtendedIndex = kNothingSelected;
mIsCapturingMouseEvents = PR_FALSE;
mDelayedIndexSetting = kNothingSelected;
mDelayedValueSetting = PR_FALSE;
mIsAllContentHere = PR_FALSE;
mIsAllFramesHere = PR_FALSE;
mHasBeenInitialized = PR_FALSE;
mDoneWithInitialReflow = PR_FALSE;
mCacheSize.width = -1;
mCacheSize.height = -1;
mCachedMaxElementSize.width = -1;
mCachedMaxElementSize.height = -1;
mCachedAvailableSize.width = -1;
mCachedAvailableSize.height = -1;
mCachedUnconstrainedSize.width = -1;
mCachedUnconstrainedSize.height = -1;
mOverrideReflowOpt = PR_FALSE;
mPassId = 0;
mUpdateTimer = nsnull;
REFLOW_COUNTER_INIT()
}
//---------------------------------------------------------
nsListControlFrame::~nsListControlFrame()
{
REFLOW_COUNTER_DUMP("nsLCF");
if (mUpdateTimer != nsnull) {
StopUpdateTimer();
NS_RELEASE(mUpdateTimer);
}
mComboboxFrame = nsnull;
if (mFormFrame) {
mFormFrame->RemoveFormControlFrame(*this);
mFormFrame = nsnull;
}
NS_IF_RELEASE(mPresContext);
}
// for Bug 47302 (remove this comment later)
NS_IMETHODIMP
nsListControlFrame::Destroy(nsIPresContext *aPresContext)
{
// get the reciever interface from the browser button's content node
nsCOMPtr<nsIDOMEventReceiver> reciever(do_QueryInterface(mContent));
nsCOMPtr<nsIDOMMouseListener> mouseListener = do_QueryInterface(mEventListener);
if (!mouseListener) { return NS_ERROR_NO_INTERFACE; }
reciever->RemoveEventListenerByIID(mouseListener, NS_GET_IID(nsIDOMMouseListener));
nsCOMPtr<nsIDOMMouseMotionListener> mouseMotionListener = do_QueryInterface(mEventListener);
if (!mouseMotionListener) { return NS_ERROR_NO_INTERFACE; }
reciever->RemoveEventListenerByIID(mouseMotionListener, NS_GET_IID(nsIDOMMouseMotionListener));
nsCOMPtr<nsIDOMKeyListener> keyListener = do_QueryInterface(mEventListener);
if (!keyListener) { return NS_ERROR_NO_INTERFACE; }
reciever->RemoveEventListenerByIID(keyListener, NS_GET_IID(nsIDOMKeyListener));
if (IsInDropDownMode() == PR_FALSE) {
nsFormControlFrame::RegUnRegAccessKey(aPresContext, NS_STATIC_CAST(nsIFrame*, this), PR_FALSE);
}
return nsScrollFrame::Destroy(aPresContext);
}
NS_IMETHODIMP
nsListControlFrame::Paint(nsIPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer,
PRUint32 aFlags)
{
nsIStyleContext* sc = mStyleContext;
const nsStyleVisibility* vis =
(const nsStyleVisibility*)mStyleContext->GetStyleData(eStyleStruct_Visibility);
if (!vis->IsVisible()) {
return PR_FALSE;
}
// Don't allow painting of list controls when painting is suppressed.
PRBool paintingSuppressed = PR_FALSE;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
shell->IsPaintingSuppressed(&paintingSuppressed);
if (paintingSuppressed)
return NS_OK;
// Start by assuming we are visible and need to be painted
PRBool isVisible = PR_TRUE;
PRBool isPaginated;
aPresContext->IsPaginated(&isPaginated);
if (isPaginated) {
PRBool isRendingSelection;;
aPresContext->IsRenderingOnlySelection(&isRendingSelection);
if (isRendingSelection) {
// Check the quick way first
PRBool isSelected = (mState & NS_FRAME_SELECTED_CONTENT) == NS_FRAME_SELECTED_CONTENT;
// if we aren't selected in the mState we could be a container
// so check to see if we are in the selection range
if (!isSelected) {
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsCOMPtr<nsISelectionController> selcon;
selcon = do_QueryInterface(shell);
if (selcon) {
nsCOMPtr<nsISelection> selection;
selcon->GetSelection(nsISelectionController::SELECTION_NORMAL, getter_AddRefs(selection));
nsCOMPtr<nsIDOMNode> node(do_QueryInterface(mContent));
selection->ContainsNode(node, PR_TRUE, &isVisible);
} else {
isVisible = PR_FALSE;
}
}
}
}
if (isVisible) {
return nsScrollFrame::Paint(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
}
DO_GLOBAL_REFLOW_COUNT_DSP("nsListControlFrame", &aRenderingContext);
return NS_OK;
}
//---------------------------------------------------------
// Frames are not refcounted, no need to AddRef
NS_IMETHODIMP
nsListControlFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
if (NULL == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
}
if (aIID.Equals(NS_GET_IID(nsIFormControlFrame))) {
*aInstancePtr = (void*) ((nsIFormControlFrame*) this);
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsIListControlFrame))) {
*aInstancePtr = (void *)((nsIListControlFrame*)this);
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsISelectControlFrame))) {
*aInstancePtr = (void *)((nsISelectControlFrame*)this);
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsIDOMMouseListener))) {
*aInstancePtr = (void*)(nsIDOMMouseListener*) this;
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsIDOMMouseMotionListener))) {
*aInstancePtr = (void*)(nsIDOMMouseMotionListener*) this;
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsIDOMKeyListener))) {
*aInstancePtr = (void*)(nsIDOMKeyListener*) this;
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsIStatefulFrame))) {
*aInstancePtr = (void*)(nsIStatefulFrame*) this;
return NS_OK;
}
return nsScrollFrame::QueryInterface(aIID, aInstancePtr);
}
#ifdef ACCESSIBILITY
NS_IMETHODIMP nsListControlFrame::GetAccessible(nsIAccessible** aAccessible)
{
nsCOMPtr<nsIAccessibilityService> accService = do_GetService("@mozilla.org/accessibilityService;1");
if (accService) {
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(mContent);
return accService->CreateHTMLListboxAccessible(node, mPresContext, aAccessible);
}
return NS_ERROR_FAILURE;
}
#endif
//---------------------------------------------------------
// Reflow is overriden to constrain the listbox height to the number of rows and columns
// specified.
#ifdef DO_REFLOW_DEBUG
static int myCounter = 0;
static void printSize(char * aDesc, nscoord aSize)
{
printf(" %s: ", aDesc);
if (aSize == NS_UNCONSTRAINEDSIZE) {
printf("UNC");
} else {
printf("%d", aSize);
}
}
#endif
//-----------------------------------------------------------------
// Main Reflow for ListBox/Dropdown
//-----------------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::Reflow(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsListControlFrame", aReflowState.reason);
DISPLAY_REFLOW(this, aReflowState, aDesiredSize, aStatus);
REFLOW_COUNTER_REQUEST();
aStatus = NS_FRAME_COMPLETE;
#ifdef DO_REFLOW_DEBUG
printf("%p ** Id: %d nsLCF::Reflow %d R: ", this, mReflowId, myCounter++);
switch (aReflowState.reason) {
case eReflowReason_Initial:
printf("Initia");break;
case eReflowReason_Incremental:
printf("Increm");break;
case eReflowReason_Resize:
printf("Resize");break;
case eReflowReason_StyleChange:
printf("StyleC");break;
case eReflowReason_Dirty:
printf("Dirty ");break;
default:printf("<unknown>%d", aReflowState.reason);break;
}
printSize("AW", aReflowState.availableWidth);
printSize("AH", aReflowState.availableHeight);
printSize("CW", aReflowState.mComputedWidth);
printSize("CH", aReflowState.mComputedHeight);
printf("\n");
#if 0
{
const nsStyleDisplay* display;
GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&)display);
printf("+++++++++++++++++++++++++++++++++ ");
switch (display->mVisible) {
case NS_STYLE_VISIBILITY_COLLAPSE: printf("NS_STYLE_VISIBILITY_COLLAPSE\n");break;
case NS_STYLE_VISIBILITY_HIDDEN: printf("NS_STYLE_VISIBILITY_HIDDEN\n");break;
case NS_STYLE_VISIBILITY_VISIBLE: printf("NS_STYLE_VISIBILITY_VISIBLE\n");break;
}
}
#endif
#endif // DEBUG_rodsXXX
PRBool bailOnWidth;
PRBool bailOnHeight;
// This ifdef is for turning off the optimization
// so we can check timings against the old version
#if 1
nsFormControlFrame::SkipResizeReflow(mCacheSize,
mCachedMaxElementSize,
mCachedAvailableSize,
aDesiredSize, aReflowState,
aStatus,
bailOnWidth, bailOnHeight);
// Here we bail if both the height and the width haven't changed
// also we see if we should override the optimization
//
// The optimization can get overridden by the combobox
// sometime the combobox knows that the list MUST do a full reflow
// no matter what
if (!mOverrideReflowOpt && bailOnWidth && bailOnHeight) {
REFLOW_DEBUG_MSG3("*** Done nsLCF - Bailing on DW: %d DH: %d ", PX(aDesiredSize.width), PX(aDesiredSize.height));
REFLOW_DEBUG_MSG3("bailOnWidth %d bailOnHeight %d\n", PX(bailOnWidth), PX(bailOnHeight));
NS_ASSERTION(aDesiredSize.width < 100000, "Width is still NS_UNCONSTRAINEDSIZE");
NS_ASSERTION(aDesiredSize.height < 100000, "Height is still NS_UNCONSTRAINEDSIZE");
return NS_OK;
} else if (mOverrideReflowOpt) {
mOverrideReflowOpt = PR_FALSE;
}
#else
bailOnWidth = PR_FALSE;
bailOnHeight = PR_FALSE;
#endif
#ifdef DEBUG_rodsXXX
// Lists out all the options
{
nsresult rv = NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMHTMLCollection> options = getter_AddRefs(GetOptions(mContent));
if (options) {
PRUint32 numOptions;
options->GetLength(&numOptions);
printf("--- Num of Items %d ---\n", numOptions);
for (PRUint32 i=0;i<numOptions;i++) {
nsCOMPtr<nsIDOMHTMLOptionElement> optionElement = getter_AddRefs(GetOption(*options, i));
if (optionElement) {
nsAutoString text;
rv = optionElement->GetLabel(text);
if (NS_CONTENT_ATTR_HAS_VALUE != rv || 0 == text.Length()) {
if (NS_OK != optionElement->GetText(text)) {
text = "No Value";
}
} else {
text = "No Value";
}
printf("[%d] - %s\n", i, NS_LossyConvertUCS2toASCII(text).get());
}
}
}
}
#endif // DEBUG_rodsXXX
if (mDelayedIndexSetting != kNothingSelected) {
SetOptionSelected(mDelayedIndexSetting, mDelayedValueSetting);
mDelayedIndexSetting = kNothingSelected;
}
// If all the content and frames are here
// then initialize it before reflow
if (mIsAllContentHere && !mHasBeenInitialized) {
if (PR_FALSE == mIsAllFramesHere) {
CheckIfAllFramesHere();
}
if (mIsAllFramesHere && !mHasBeenInitialized) {
mHasBeenInitialized = PR_TRUE;
ResetList(aPresContext);
}
}
if (eReflowReason_Incremental == aReflowState.reason) {
nsIFrame* targetFrame;
aReflowState.reflowCommand->GetTarget(targetFrame);
if (targetFrame == this) {
// XXX So this may do it too often
// the side effect of this is if the user has scrolled to some other place in the list and
// an incremental reflow comes through the list gets scrolled to the first selected item
// I haven't been able to make it do it, but it will do it
// basically the real solution is to know when all the reframes are there.
nsCOMPtr<nsIContent> content = getter_AddRefs(GetOptionContent(mSelectedIndex));
if (content) {
ScrollToFrame(content);
}
}
}
// Strategy: Let the inherited reflow happen as though the width and height of the
// ScrollFrame are big enough to allow the listbox to
// shrink to fit the longest option element line in the list.
// The desired width and height returned by the inherited reflow is returned,
// unless one of the following has been specified.
// 1. A css width has been specified.
// 2. The size has been specified.
// 3. The css height has been specified, but the number of rows has not.
// The size attribute overrides the height setting but the height setting
// should be honored if there isn't a size specified.
// Determine the desired width + height for the listbox +
aDesiredSize.width = 0;
aDesiredSize.height = 0;
// Add the list frame as a child of the form
if (eReflowReason_Initial == aReflowState.reason) {
if (mPresState) {
RestoreState(aPresContext, mPresState);
mPresState = do_QueryInterface(nsnull);
}
if (IsInDropDownMode() == PR_FALSE && !mFormFrame) {
nsFormControlFrame::RegUnRegAccessKey(aPresContext, NS_STATIC_CAST(nsIFrame*, this), PR_TRUE);
nsFormFrame::AddFormControlFrame(aPresContext, *NS_STATIC_CAST(nsIFrame*, this));
}
}
//--Calculate a width just big enough for the scrollframe to shrink around the
//longest element in the list
nsHTMLReflowState secondPassState(aReflowState);
nsHTMLReflowState firstPassState(aReflowState);
//nsHTMLReflowState firstPassState(aPresContext, nsnull,
// this, aDesiredSize);
// Get the size of option elements inside the listbox
// Compute the width based on the longest line in the listbox.
firstPassState.mComputedWidth = NS_UNCONSTRAINEDSIZE;
firstPassState.mComputedHeight = NS_UNCONSTRAINEDSIZE;
firstPassState.availableWidth = NS_UNCONSTRAINEDSIZE;
firstPassState.availableHeight = NS_UNCONSTRAINEDSIZE;
nsSize scrolledAreaSize(0,0);
nsHTMLReflowMetrics scrolledAreaDesiredSize(&scrolledAreaSize);
if (eReflowReason_Incremental == aReflowState.reason) {
nsIFrame* targetFrame;
firstPassState.reflowCommand->GetTarget(targetFrame);
if (this == targetFrame) {
nsIReflowCommand::ReflowType type;
aReflowState.reflowCommand->GetType(type);
firstPassState.reason = eReflowReason_StyleChange;
firstPassState.reflowCommand = nsnull;
} else {
nsresult res = nsScrollFrame::Reflow(aPresContext,
scrolledAreaDesiredSize,
aReflowState,
aStatus);
if (NS_FAILED(res)) {
NS_ASSERTION(aDesiredSize.width < 100000, "Width is still NS_UNCONSTRAINEDSIZE");
NS_ASSERTION(aDesiredSize.height < 100000, "Height is still NS_UNCONSTRAINEDSIZE");
return res;
}
nsIReflowCommand::ReflowType type;
aReflowState.reflowCommand->GetType(type);
firstPassState.reason = eReflowReason_StyleChange;
firstPassState.reflowCommand = nsnull;
}
}
if (mPassId == 0 || mPassId == 1) {
nsresult res = nsScrollFrame::Reflow(aPresContext,
scrolledAreaDesiredSize,
firstPassState,
aStatus);
if (NS_FAILED(res)) {
NS_ASSERTION(aDesiredSize.width < 100000, "Width is still NS_UNCONSTRAINEDSIZE");
NS_ASSERTION(aDesiredSize.height < 100000, "Height is still NS_UNCONSTRAINEDSIZE");
return res;
}
mCachedUnconstrainedSize.width = scrolledAreaDesiredSize.width;
mCachedUnconstrainedSize.height = scrolledAreaDesiredSize.height;
mCachedDesiredMaxSize.width = scrolledAreaDesiredSize.maxElementSize->width;
mCachedDesiredMaxSize.height = scrolledAreaDesiredSize.maxElementSize->height;
} else {
scrolledAreaDesiredSize.width = mCachedUnconstrainedSize.width;
scrolledAreaDesiredSize.height = mCachedUnconstrainedSize.height;
scrolledAreaDesiredSize.maxElementSize->width = mCachedDesiredMaxSize.width;
scrolledAreaDesiredSize.maxElementSize->height = mCachedDesiredMaxSize.height;
}
// Compute the bounding box of the contents of the list using the area
// calculated by the first reflow as a starting point.
//
// The nsScrollFrame::REflow adds in the scrollbar width and border dimensions
// to the maxElementSize, so these need to be subtracted
nscoord scrolledAreaWidth = scrolledAreaDesiredSize.maxElementSize->width -
(aReflowState.mComputedBorderPadding.left + aReflowState.mComputedBorderPadding.right);
nscoord scrolledAreaHeight = scrolledAreaDesiredSize.height -
(aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom);
// Set up max values
mMaxWidth = scrolledAreaWidth;
mMaxHeight = scrolledAreaDesiredSize.maxElementSize->height -
(aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom);
// Now the scrolledAreaWidth and scrolledAreaHeight are exactly
// wide and high enough to enclose their contents
PRBool isInDropDownMode = IsInDropDownMode();
nscoord visibleWidth = 0;
if (isInDropDownMode) {
if (NS_UNCONSTRAINEDSIZE == aReflowState.mComputedWidth) {
visibleWidth = scrolledAreaWidth;
} else {
visibleWidth = aReflowState.mComputedWidth;
visibleWidth -= aReflowState.mComputedBorderPadding.left + aReflowState.mComputedBorderPadding.right;
}
} else {
if (NS_UNCONSTRAINEDSIZE == aReflowState.mComputedWidth) {
visibleWidth = scrolledAreaWidth;
} else {
visibleWidth = aReflowState.mComputedWidth;
}
}
// Determine if a scrollbar will be needed, If so we need to add
// enough the width to allow for the scrollbar.
// The scrollbar will be needed under two conditions:
// (size * heightOfaRow) < scrolledAreaHeight or
// the height set through Style < scrolledAreaHeight.
// Calculate the height of a single row in the listbox or dropdown list
// Note: It is calculated based on what layout returns for the maxElement
// size, rather than trying to take the scrolledAreaHeight and dividing by the number
// of option elements. The reason is that their may be option groups in addition to
// option elements. Either of which may be visible or invisible.
PRInt32 heightOfARow = scrolledAreaDesiredSize.maxElementSize->height;
heightOfARow -= aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom;
// Check to see if we have zero items
PRInt32 length = 0;
GetNumberOfOptions(&length);
// If there is only one option and that option's content is empty
// then heightOfARow is zero, so we need to go measure
// the height of the option as if it had some text.
if (heightOfARow == 0 && length > 0) {
nsIContent * option = GetOptionContent(0);
if (option != nsnull) {
nsIFrame * optFrame;
nsCOMPtr<nsIPresShell> presShell;
mPresContext->GetShell(getter_AddRefs(presShell));
nsresult result = presShell->GetPrimaryFrameFor(option, &optFrame);
if (NS_SUCCEEDED(result) && optFrame != nsnull) {
nsCOMPtr<nsIStyleContext> optStyle;
optFrame->GetStyleContext(getter_AddRefs(optStyle));
if (optStyle) {
const nsStyleFont* styleFont = (const nsStyleFont*)optStyle->GetStyleData(eStyleStruct_Font);
nsCOMPtr<nsIDeviceContext> deviceContext;
aPresContext->GetDeviceContext(getter_AddRefs(deviceContext));
NS_ASSERTION(deviceContext, "Couldn't get the device context");
nsIFontMetrics * fontMet;
result = deviceContext->GetMetricsFor(styleFont->mFont, fontMet);
if (NS_SUCCEEDED(result) && fontMet != nsnull) {
if (fontMet) {
fontMet->GetHeight(heightOfARow);
mMaxHeight = heightOfARow;
}
NS_RELEASE(fontMet);
}
}
}
NS_RELEASE(option);
}
}
// Check to see if we have no width and height
// The following code measures the width and height
// of a bogus string so the list actually displays
nscoord visibleHeight = 0;
if (isInDropDownMode) {
// Compute the visible height of the drop-down list
// The dropdown list height is the smaller of it's height setting or the height
// of the smallest box that can drawn around it's contents.
visibleHeight = scrolledAreaHeight;
mNumDisplayRows = kMaxDropDownRows;
if (visibleHeight > (mNumDisplayRows * heightOfARow)) {
visibleHeight = (mNumDisplayRows * heightOfARow);
// This is an adaptive algorithm for figuring out how many rows
// should be displayed in the drop down. The standard size is 20 rows,
// but on 640x480 it is typically too big.
// This takes the height of the screen divides it by two and then subtracts off
// an estimated height of the combobox. I estimate it by taking the max element size
// of the drop down and multiplying it by 2 (this is arbitrary) then subtract off
// the border and padding of the drop down (again rather arbitrary)
// This all breaks down if the font of the combobox is a lot larger then the option items
// or CSS style has set the height of the combobox to be rather large.
// We can fix these cases later if they actually happen.
if (isInDropDownMode) {
nscoord screenHeightInPixels = 0;
if (NS_SUCCEEDED(nsFormControlFrame::GetScreenHeight(aPresContext, screenHeightInPixels))) {
float p2t;
aPresContext->GetPixelsToTwips(&p2t);
nscoord screenHeight = NSIntPixelsToTwips(screenHeightInPixels, p2t);
nscoord availDropHgt = (screenHeight / 2) - (heightOfARow*2); // approx half screen minus combo size
availDropHgt -= aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom;
nscoord hgt = visibleHeight + aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom;
if (heightOfARow > 0) {
if (hgt > availDropHgt) {
visibleHeight = (availDropHgt / heightOfARow) * heightOfARow;
}
mNumDisplayRows = visibleHeight / heightOfARow;
} else {
// Hmmm, not sure what to do here. Punt, and make both of them one
visibleHeight = 1;
mNumDisplayRows = 1;
}
}
}
}
} else {
// Calculate the visible height of the listbox
if (NS_UNCONSTRAINEDSIZE != aReflowState.mComputedHeight) {
visibleHeight = aReflowState.mComputedHeight;
} else {
mNumDisplayRows = 1;
GetSizeAttribute(&mNumDisplayRows);
// because we are not a drop down
// we will always have 2 or more rows
if (mNumDisplayRows >= 1) {
visibleHeight = mNumDisplayRows * heightOfARow;
} else {
PRBool multipleSelections = PR_FALSE;
GetMultiple(&multipleSelections);
if (multipleSelections) {
visibleHeight = PR_MIN(length, kMaxDropDownRows) * heightOfARow;
} else {
visibleHeight = 2 * heightOfARow;
}
}
}
}
// There are no items in the list
// but we want to include space for the scrollbars
// So fake like we will need scrollbars also
if (!isInDropDownMode && 0 == length) {
if (aReflowState.mComputedWidth != 0) {
scrolledAreaHeight = visibleHeight+1;
}
}
PRBool needsVerticalScrollbar = PR_FALSE;
if (visibleHeight < scrolledAreaHeight) {
needsVerticalScrollbar = PR_TRUE;
}
if (needsVerticalScrollbar) {
mIsScrollbarVisible = PR_TRUE; // XXX temp code
} else {
mIsScrollbarVisible = PR_FALSE; // XXX temp code
}
// The visible height is zero, this could be a select with no options
// or a select with a single option that has no content or no label
//
// So this may not be the best solution, but we get the height of the font
// for the list frame and use that as the max/minimum size for the contents
if (visibleHeight == 0) {
if (aReflowState.mComputedHeight != 0) {
nsCOMPtr<nsIFontMetrics> fontMet;
nsresult rvv = nsFormControlHelper::GetFrameFontFM(aPresContext, this, getter_AddRefs(fontMet));
if (NS_SUCCEEDED(rvv) && fontMet) {
aReflowState.rendContext->SetFont(fontMet);
fontMet->GetHeight(visibleHeight);
mMaxHeight = visibleHeight;
}
}
}
if (NS_UNCONSTRAINEDSIZE == aReflowState.mComputedWidth) {
visibleWidth += aReflowState.mComputedBorderPadding.left + aReflowState.mComputedBorderPadding.right;
}
// When in dropdown mode make sure we obey min/max-width and min/max-height
if (!isInDropDownMode) {
nscoord fullWidth = visibleWidth + aReflowState.mComputedBorderPadding.left + aReflowState.mComputedBorderPadding.right;
if (fullWidth > aReflowState.mComputedMaxWidth) {
visibleWidth = aReflowState.mComputedMaxWidth - aReflowState.mComputedBorderPadding.left - aReflowState.mComputedBorderPadding.right;
}
if (fullWidth < aReflowState.mComputedMinWidth) {
visibleWidth = aReflowState.mComputedMinWidth - aReflowState.mComputedBorderPadding.left - aReflowState.mComputedBorderPadding.right;
}
// calculate full height for comparison
// must add in Border & Padding twice because the scrolled area also inherits Border & Padding
nscoord fullHeight = 0;
if (aReflowState.mComputedHeight != 0) {
fullHeight = visibleHeight + aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom;
// + aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom;
}
if (fullHeight > aReflowState.mComputedMaxHeight) {
visibleHeight = aReflowState.mComputedMaxHeight - aReflowState.mComputedBorderPadding.top - aReflowState.mComputedBorderPadding.bottom;
}
if (fullHeight < aReflowState.mComputedMinHeight) {
visibleHeight = aReflowState.mComputedMinHeight - aReflowState.mComputedBorderPadding.top - aReflowState.mComputedBorderPadding.bottom;
}
}
#ifdef IBMBIDI
nsRect parentRect, thisRect;
// Retrieve the scrollbar's width and height
float sbWidth = 0.0;
float sbHeight = 0.0;;
nsCOMPtr<nsIDeviceContext> dc;
aPresContext->GetDeviceContext(getter_AddRefs(dc));
dc->GetScrollBarDimensions(sbWidth, sbHeight);
// Convert to nscoord's by rounding
nscoord scrollbarWidth = NSToCoordRound(sbWidth);
const nsStyleVisibility* vis;
GetStyleData(eStyleStruct_Visibility, (const nsStyleStruct*&)vis);
if (vis->mDirection == NS_STYLE_DIRECTION_RTL)
{
nscoord bidiScrolledAreaWidth = scrolledAreaDesiredSize.maxElementSize->width;
firstPassState.reason = eReflowReason_StyleChange;
float p2t;
aPresContext->GetScaledPixelsToTwips(&p2t);
if (aReflowState.mComputedWidth == NS_UNCONSTRAINEDSIZE)
{
if (needsVerticalScrollbar) {
bidiScrolledAreaWidth -= scrollbarWidth;
} else {
bidiScrolledAreaWidth = aReflowState.mComputedWidth - scrollbarWidth + (6 * p2t);
if (needsVerticalScrollbar) bidiScrolledAreaWidth -= scrollbarWidth;
}
bidiScrolledAreaWidth -= (aReflowState.mComputedBorderPadding.left + aReflowState.mComputedBorderPadding.right);
firstPassState.mComputedWidth = bidiScrolledAreaWidth;
firstPassState.availableWidth = bidiScrolledAreaWidth;
nsScrollFrame::Reflow(aPresContext, aDesiredSize, firstPassState, aStatus);
}
}
#endif // IBMBIDI
// Do a second reflow with the adjusted width and height settings
// This sets up all of the frames with the correct width and height.
secondPassState.mComputedWidth = visibleWidth;
secondPassState.mComputedHeight = visibleHeight;
secondPassState.reason = eReflowReason_Resize;
if (mPassId == 0 || mPassId == 2) {
nsScrollFrame::Reflow(aPresContext, aDesiredSize, secondPassState, aStatus);
if (aReflowState.mComputedHeight == 0) {
aDesiredSize.ascent = 0;
aDesiredSize.descent = 0;
aDesiredSize.height = 0;
}
// Set the max element size to be the same as the desired element size.
} else {
aDesiredSize.width = visibleWidth;
aDesiredSize.height = visibleHeight;
aDesiredSize.ascent = aDesiredSize.height;
aDesiredSize.descent = 0;
}
if (nsnull != aDesiredSize.maxElementSize) {
aDesiredSize.maxElementSize->width = aDesiredSize.width;
aDesiredSize.maxElementSize->height = aDesiredSize.height;
}
aStatus = NS_FRAME_COMPLETE;
#ifdef DEBUG_rodsX
if (!isInDropDownMode) {
PRInt32 numRows = 1;
GetSizeAttribute(&numRows);
printf("%d ", numRows);
if (numRows == 2) {
COMPARE_QUIRK_SIZE("nsListControlFrame", 56, 38)
} else if (numRows == 3) {
COMPARE_QUIRK_SIZE("nsListControlFrame", 56, 54)
} else if (numRows == 4) {
COMPARE_QUIRK_SIZE("nsListControlFrame", 56, 70)
} else {
COMPARE_QUIRK_SIZE("nsListControlFrame", 127, 118)
}
}
#endif
if (aReflowState.availableWidth != NS_UNCONSTRAINEDSIZE) {
mCachedAvailableSize.width = aDesiredSize.width - (aReflowState.mComputedBorderPadding.left + aReflowState.mComputedBorderPadding.right);
REFLOW_DEBUG_MSG2("** nsLCF Caching AW: %d\n", PX(mCachedAvailableSize.width));
}
if (aReflowState.availableHeight != NS_UNCONSTRAINEDSIZE) {
mCachedAvailableSize.height = aDesiredSize.height - (aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom);
REFLOW_DEBUG_MSG2("** nsLCF Caching AH: %d\n", PX(mCachedAvailableSize.height));
}
//REFLOW_DEBUG_MSG3("** nsLCF Caching AW: %d AH: %d\n", PX(mCachedAvailableSize.width), PX(mCachedAvailableSize.height));
nsFormControlFrame::SetupCachedSizes(mCacheSize, mCachedMaxElementSize, aDesiredSize);
REFLOW_DEBUG_MSG3("** Done nsLCF DW: %d DH: %d\n\n", PX(aDesiredSize.width), PX(aDesiredSize.height));
REFLOW_COUNTER();
#ifdef DO_REFLOW_COUNTER
if (gReflowControlCnt[mReflowId] > 50) {
REFLOW_DEBUG_MSG3("** Id: %d Cnt: %d ", mReflowId, gReflowControlCnt[mReflowId]);
REFLOW_DEBUG_MSG3("Done nsLCF DW: %d DH: %d\n", PX(aDesiredSize.width), PX(aDesiredSize.height));
}
#endif
NS_ASSERTION(aDesiredSize.width < 100000, "Width is still NS_UNCONSTRAINEDSIZE");
NS_ASSERTION(aDesiredSize.height < 100000, "Height is still NS_UNCONSTRAINEDSIZE");
return NS_OK;
}
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::GetFormContent(nsIContent*& aContent) const
{
nsIContent* content;
nsresult rv;
rv = GetContent(&content);
aContent = content;
return rv;
}
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::GetFont(nsIPresContext* aPresContext,
const nsFont*& aFont)
{
return nsFormControlHelper::GetFont(this, aPresContext, mStyleContext, aFont);
}
//---------------------------------------------------------
PRBool
nsListControlFrame::IsOptionElement(nsIContent* aContent)
{
PRBool result = PR_FALSE;
nsCOMPtr<nsIDOMHTMLOptionElement> optElem;
if (NS_SUCCEEDED(aContent->QueryInterface(NS_GET_IID(nsIDOMHTMLOptionElement),(void**) getter_AddRefs(optElem)))) {
if (optElem != nsnull) {
result = PR_TRUE;
}
}
return result;
}
//---------------------------------------------------------
PRBool
nsListControlFrame::IsOptionElementFrame(nsIFrame *aFrame)
{
PRBool result = PR_FALSE;
nsCOMPtr<nsIContent> content;
aFrame->GetContent(getter_AddRefs(content));
if (content) {
result = IsOptionElement(content);
}
return result;
}
//---------------------------------------------------------
// Go up the frame tree looking for the first ancestor that has content
// which is selectable
nsIFrame *
nsListControlFrame::GetSelectableFrame(nsIFrame *aFrame)
{
nsIFrame* selectedFrame = aFrame;
while ((nsnull != selectedFrame) &&
(PR_FALSE ==IsOptionElementFrame(selectedFrame))) {
selectedFrame->GetParent(&selectedFrame);
}
return(selectedFrame);
}
//---------------------------------------------------------
void
nsListControlFrame::ForceRedraw(nsIPresContext* aPresContext)
{
//XXX: Hack. This should not be needed. The problem is DisplaySelected
//and DisplayDeselected set and unset an attribute on generic HTML content
//which does not know that it should repaint as the result of the attribute
//being set. This should not be needed once the event state manager handles
//selection.
nsFormControlHelper::ForceDrawFrame(aPresContext, this);
}
//---------------------------------------------------------
// XXX: Here we introduce a new -moz-option-selected attribute so a attribute
// selecitor n the ua.css can change the style when the option is selected.
void
nsListControlFrame::DisplaySelected(nsIContent* aContent)
{
// ignore return value, not much we can do if it fails
aContent->SetAttr(kNameSpaceID_None, nsLayoutAtoms::optionSelectedPseudo, nsAutoString(), mIsAllFramesHere);
}
//---------------------------------------------------------
void
nsListControlFrame::DisplayDeselected(nsIContent* aContent)
{
// ignore return value, not much we can do if it fails
aContent->UnsetAttr(kNameSpaceID_None, nsLayoutAtoms::optionSelectedPseudo, mIsAllFramesHere);
}
//---------------------------------------------------------
// Starts at the passed in content object and walks up the
// parent heierarchy looking for the nsIDOMHTMLOptionElement
//---------------------------------------------------------
nsIContent *
nsListControlFrame::GetOptionFromContent(nsIContent *aContent)
{
nsIContent * content = aContent;
NS_IF_ADDREF(content);
while (nsnull != content) {
if (IsOptionElement(content)) {
return content;
}
nsIContent * node = content;
node->GetParent(content); // this add refs
NS_RELEASE(node);
}
return nsnull;
}
//---------------------------------------------------------
// Finds the index of the hit frame's content in the list
// of option elements
//---------------------------------------------------------
PRInt32
nsListControlFrame::GetSelectedIndexFromContent(nsIContent *aContent)
{
// Search the list of option elements looking for a match
// between the hit frame's content and the content of an option element
// get the collection of option items
nsCOMPtr<nsIDOMHTMLCollection> options = getter_AddRefs(GetOptions(mContent));
if (options) {
PRUint32 numOptions;
options->GetLength(&numOptions);
PRUint32 inx;
for (inx = 0; inx < numOptions; inx++) {
nsIContent * option = GetOptionAsContent(options, inx);
if (option != nsnull) {
if (option == aContent) {
NS_RELEASE(option);
return inx;
}
NS_RELEASE(option);
}
}
}
return kNothingSelected;
}
//---------------------------------------------------------
// Finds the index of the hit frame's content in the list
// of option elements
//---------------------------------------------------------
PRInt32
nsListControlFrame::GetSelectedIndexFromFrame(nsIFrame *aHitFrame)
{
NS_ASSERTION(aHitFrame, "No frame for html <select> element\n");
PRInt32 indx = kNothingSelected;
// Get the content of the frame that was selected
if (aHitFrame) {
nsCOMPtr<nsIContent> selectedContent;
aHitFrame->GetContent(getter_AddRefs(selectedContent));
if (selectedContent) {
indx = GetSelectedIndexFromContent(selectedContent);
}
}
return indx;
}
//---------------------------------------------------------
void
nsListControlFrame::ClearSelection()
{
PRInt32 length = 0;
GetNumberOfOptions(&length);
for (PRInt32 i = 0; i < length; i++) {
if (i != mSelectedIndex) {
SetContentSelected(i, PR_FALSE);
}
}
}
//---------------------------------------------------------
void
nsListControlFrame::ExtendedSelection(PRInt32 aStartIndex, PRInt32 aEndIndex, PRBool aDoInvert, PRBool aSetValue)
{
PRInt32 startInx;
PRInt32 endInx;
if (aStartIndex < aEndIndex) {
startInx = aStartIndex;
endInx = aEndIndex;
} else {
startInx = aEndIndex;
endInx = aStartIndex;
}
PRInt32 i = 0;
PRBool startInverting = PR_FALSE;
PRInt32 length = 0;
GetNumberOfOptions(&length);
for (i = 0; i < length; i++) {
if (i == startInx) {
startInverting = PR_TRUE;
}
if (startInverting && ((i != mStartExtendedIndex && aDoInvert) || !aDoInvert)) {
if (aDoInvert) {
SetContentSelected(i, !IsContentSelectedByIndex(i));
} else {
SetContentSelected(i, aSetValue);
}
}
if (i == endInx) {
startInverting = PR_FALSE;
}
}
}
//---------------------------------------------------------
void
nsListControlFrame::SingleSelection()
{
// Get Current selection
if (mSelectedIndex != kNothingSelected) {
if (mOldSelectedIndex != mSelectedIndex) {
// Deselect the previous selection if there is one
if (mOldSelectedIndex != kNothingSelected) {
SetContentSelected(mOldSelectedIndex, PR_FALSE);
}
// Display the new selection
SetContentSelected(mSelectedIndex, PR_TRUE);
} else {
// Selecting the currently selected item so do nothing.
}
}
}
//---------------------------------------------------------
void
nsListControlFrame::MultipleSelection(PRBool aIsShift, PRBool aIsControl)
{
if (kNothingSelected != mSelectedIndex) {
//if ((aIsShift) || (mButtonDown && (!aIsControl))) {
if (aIsShift) {
// Shift is held down
SetContentSelected(mSelectedIndex, PR_TRUE);
if (mEndExtendedIndex == kNothingSelected) {
if (mOldSelectedIndex == kNothingSelected) {
mStartExtendedIndex = mSelectedIndex;
mEndExtendedIndex = kNothingSelected;
} else {
if (mSelectedIndex == mOldSelectedIndex) {
mEndExtendedIndex = kNothingSelected;
} else {
mEndExtendedIndex = mSelectedIndex;
}
ExtendedSelection(mStartExtendedIndex, mEndExtendedIndex, PR_FALSE, PR_TRUE);
}
} else {
if (mStartExtendedIndex < mEndExtendedIndex) {
if (mSelectedIndex < mStartExtendedIndex) {
ExtendedSelection(mSelectedIndex+1, mEndExtendedIndex, PR_TRUE, PR_TRUE);
mEndExtendedIndex = mSelectedIndex;
} else if (mSelectedIndex > mEndExtendedIndex) {
ExtendedSelection(mEndExtendedIndex+1, mSelectedIndex, PR_FALSE, PR_TRUE);
mEndExtendedIndex = mSelectedIndex;
} else if (mSelectedIndex < mEndExtendedIndex) {
ExtendedSelection(mSelectedIndex+1, mEndExtendedIndex, PR_FALSE, PR_FALSE);
if (mSelectedIndex == mStartExtendedIndex) {
mEndExtendedIndex = kNothingSelected;
} else {
mEndExtendedIndex = mSelectedIndex;
}
}
} else if (mStartExtendedIndex > mEndExtendedIndex) {
if (mSelectedIndex > mStartExtendedIndex) {
ExtendedSelection(mEndExtendedIndex, mSelectedIndex-1, PR_TRUE, PR_TRUE);
mEndExtendedIndex = mSelectedIndex;
} else if (mSelectedIndex < mEndExtendedIndex) {
ExtendedSelection(mStartExtendedIndex, mEndExtendedIndex-1, PR_FALSE, PR_TRUE);
mEndExtendedIndex = mSelectedIndex;
} else if (mSelectedIndex > mEndExtendedIndex) {
ExtendedSelection(mEndExtendedIndex, mSelectedIndex-1, PR_FALSE, PR_FALSE);
if (mSelectedIndex == mStartExtendedIndex) {
mEndExtendedIndex = kNothingSelected;
} else {
mEndExtendedIndex = mSelectedIndex;
}
}
}
}
} else if (aIsControl) {
// Control is held down
if (IsContentSelectedByIndex(mSelectedIndex)) {
SetContentSelected(mSelectedIndex, PR_FALSE);
// after clearing the selected item
// we need to check to see if there are any more
// selected items
PRInt32 i;
PRInt32 max = 0;
if (NS_SUCCEEDED(GetNumberOfOptions(&max))) {
for (i=0;i<max;i++) {
if (IsContentSelectedByIndex(i)) {
// set this to "-1" to force the dispatch of the onchange event
mOldSelectedIndex = -1;
break;
}
}
}
// didn't find any other seleccted items
// so we must set the currently selected item to "-1"
// this also forces the dispatch of the onchange event
if (i == max) {
mSelectedIndex = -1;
}
} else {
SetContentSelected(mSelectedIndex, PR_TRUE);
}
} else {
// Neither control nor shift is held down
SetContentSelected(mSelectedIndex, PR_TRUE);
mStartExtendedIndex = mSelectedIndex;
mEndExtendedIndex = kNothingSelected;
ClearSelection();
}
}
#ifdef DEBUG_rodsX
printf("mSelectedIndex: %d\n", mSelectedIndex);
printf("mOldSelectedIndex: %d\n", mOldSelectedIndex);
printf("mStartExtendedIndex: %d\n", mStartExtendedIndex);
printf("mEndExtendedIndex: %d\n", mEndExtendedIndex);
#endif
}
//---------------------------------------------------------
void
nsListControlFrame::HandleListSelection(nsIDOMEvent* aEvent)
{
PRBool multipleSelections = PR_FALSE;
GetMultiple(&multipleSelections);
if (multipleSelections) {
nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aEvent);
PRBool isShift;
PRBool isControl;
#ifdef XP_MAC
mouseEvent->GetMetaKey(&isControl);
#else
mouseEvent->GetCtrlKey(&isControl);
#endif
mouseEvent->GetShiftKey(&isShift);
MultipleSelection(isShift, isControl);
} else {
SingleSelection();
}
}
//---------------------------------------------------------
PRBool
nsListControlFrame::HasSameContent(nsIFrame* aFrame1, nsIFrame* aFrame2)
{
// Quick check, if the frames are equal they must have
// the same content
if (aFrame1 == aFrame2)
return PR_TRUE;
PRBool result = PR_FALSE;
nsIContent* content1 = nsnull;
nsIContent* content2 = nsnull;
aFrame1->GetContent(&content1);
aFrame2->GetContent(&content2);
if (aFrame1 == aFrame2) {
result = PR_TRUE;
}
NS_IF_RELEASE(content1);
NS_IF_RELEASE(content2);
return(result);
}
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::CaptureMouseEvents(nsIPresContext* aPresContext, PRBool aGrabMouseEvents)
{
// get its view
nsIView* view = nsnull;
GetView(aPresContext, &view);
nsCOMPtr<nsIViewManager> viewMan;
PRBool result;
if (view) {
view->GetViewManager(*getter_AddRefs(viewMan));
if (viewMan) {
if (aGrabMouseEvents) {
viewMan->GrabMouseEvents(view,result);
mIsCapturingMouseEvents = PR_TRUE;
} else {
viewMan->GrabMouseEvents(nsnull,result);
mIsCapturingMouseEvents = PR_FALSE;
}
// XXX this is temp code
#if 0
if (!mIsScrollbarVisible) {
nsIWidget * widget;
view->GetWidget(widget);
if (nsnull != widget) {
widget->CaptureMouse(aGrabMouseEvents);
NS_RELEASE(widget);
}
}
#endif
}
}
return NS_OK;
}
//---------------------------------------------------------
nsIView*
nsListControlFrame::GetViewFor(nsIWidget* aWidget)
{
nsIView* view = nsnull;
void* clientData;
NS_PRECONDITION(nsnull != aWidget, "null widget ptr");
// The widget's client data points back to the owning view
if (aWidget && NS_SUCCEEDED(aWidget->GetClientData(clientData))) {
view = (nsIView*)clientData;
}
return view;
}
//---------------------------------------------------------
// Determine if a view is an ancestor of another view.
PRBool
nsListControlFrame::IsAncestor(nsIView* aAncestor, nsIView* aChild)
{
nsIView* view = aChild;
while (nsnull != view) {
if (view == aAncestor)
// Is an ancestor
return(PR_TRUE);
else {
view->GetParent(view);
}
}
// Not an ancestor
return(PR_FALSE);
}
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::HandleEvent(nsIPresContext* aPresContext,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus)
{
NS_ENSURE_ARG_POINTER(aEventStatus);
/*const char * desc[] = {"NS_MOUSE_MOVE",
"NS_MOUSE_LEFT_BUTTON_UP",
"NS_MOUSE_LEFT_BUTTON_DOWN",
"<NA>","<NA>","<NA>","<NA>","<NA>","<NA>","<NA>",
"NS_MOUSE_MIDDLE_BUTTON_UP",
"NS_MOUSE_MIDDLE_BUTTON_DOWN",
"<NA>","<NA>","<NA>","<NA>","<NA>","<NA>","<NA>","<NA>",
"NS_MOUSE_RIGHT_BUTTON_UP",
"NS_MOUSE_RIGHT_BUTTON_DOWN",
"NS_MOUSE_ENTER_SYNTH",
"NS_MOUSE_EXIT_SYNTH",
"NS_MOUSE_LEFT_DOUBLECLICK",
"NS_MOUSE_MIDDLE_DOUBLECLICK",
"NS_MOUSE_RIGHT_DOUBLECLICK",
"NS_MOUSE_LEFT_CLICK",
"NS_MOUSE_MIDDLE_CLICK",
"NS_MOUSE_RIGHT_CLICK"};
int inx = aEvent->message-NS_MOUSE_MESSAGE_START;
if (inx >= 0 && inx <= (NS_MOUSE_RIGHT_CLICK-NS_MOUSE_MESSAGE_START)) {
printf("Mouse in ListFrame %s [%d]\n", desc[inx], aEvent->message);
} else {
printf("Mouse in ListFrame <UNKNOWN> [%d]\n", aEvent->message);
}*/
if (nsEventStatus_eConsumeNoDefault == *aEventStatus)
return NS_OK;
// do we have style that affects how we are selected?
// do we have user-input style?
const nsStyleUserInterface* uiStyle;
GetStyleData(eStyleStruct_UserInterface, (const nsStyleStruct *&)uiStyle);
if (uiStyle->mUserInput == NS_STYLE_USER_INPUT_NONE || uiStyle->mUserInput == NS_STYLE_USER_INPUT_DISABLED)
return nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
if (nsFormFrame::GetDisabled(this))
return NS_OK;
switch(aEvent->message) {
case NS_KEY_PRESS:
if (NS_KEY_EVENT == aEvent->eventStructType) {
#ifdef DEBUG_rodsXXX
nsKeyEvent* keyEvent = (nsKeyEvent*)aEvent;
printf("---> %d %c\n", keyEvent->keyCode, keyEvent->keyCode);
#endif
//if (NS_VK_SPACE == keyEvent->keyCode || NS_VK_RETURN == keyEvent->keyCode) {
// MouseClicked(aPresContext);
//}
}
break;
default:
break;
}
return nsScrollFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
}
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::SetInitialChildList(nsIPresContext* aPresContext,
nsIAtom* aListName,
nsIFrame* aChildList)
{
// First check to see if all the content has been added
nsCOMPtr<nsISelectElement> element(do_QueryInterface(mContent));
if (element) {
element->IsDoneAddingContent(&mIsAllContentHere);
if (!mIsAllContentHere) {
mIsAllFramesHere = PR_FALSE;
mHasBeenInitialized = PR_FALSE;
}
}
nsresult rv = nsScrollFrame::SetInitialChildList(aPresContext, aListName, aChildList);
// If all the content is here now check
// to see if all the frames have been created
/*if (mIsAllContentHere) {
// If all content and frames are here
// the reset/initialize
if (CheckIfAllFramesHere()) {
ResetList(aPresContext);
mHasBeenInitialized = PR_TRUE;
}
}*/
return rv;
}
//---------------------------------------------------------
nsresult
nsListControlFrame::GetSizeAttribute(PRInt32 *aSize) {
nsresult rv = NS_OK;
nsIDOMHTMLSelectElement* selectElement;
rv = mContent->QueryInterface(NS_GET_IID(nsIDOMHTMLSelectElement),(void**) &selectElement);
if (mContent && NS_SUCCEEDED(rv)) {
rv = selectElement->GetSize(aSize);
NS_RELEASE(selectElement);
}
return rv;
}
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::Init(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParent,
nsIStyleContext* aContext,
nsIFrame* aPrevInFlow)
{
mPresContext = aPresContext;
NS_ADDREF(mPresContext);
nsresult result = nsScrollFrame::Init(aPresContext, aContent, aParent, aContext,
aPrevInFlow);
// get the reciever interface from the browser button's content node
nsCOMPtr<nsIDOMEventReceiver> reciever(do_QueryInterface(mContent));
// we shouldn't have to unregister this listener because when
// our frame goes away all these content node go away as well
// because our frame is the only one who references them.
// we need to hook up our listeners before the editor is initialized
result = NS_NewListEventListener(getter_AddRefs(mEventListener));
if (NS_FAILED(result)) { return result ; }
if (!mEventListener) { return NS_ERROR_NULL_POINTER; }
mEventListener->SetFrame(this);
nsCOMPtr<nsIDOMMouseListener> mouseListener = do_QueryInterface(mEventListener);
if (!mouseListener) { return NS_ERROR_NO_INTERFACE; }
reciever->AddEventListenerByIID(mouseListener, NS_GET_IID(nsIDOMMouseListener));
nsCOMPtr<nsIDOMMouseMotionListener> mouseMotionListener = do_QueryInterface(mEventListener);
if (!mouseMotionListener) { return NS_ERROR_NO_INTERFACE; }
reciever->AddEventListenerByIID(mouseMotionListener, NS_GET_IID(nsIDOMMouseMotionListener));
nsCOMPtr<nsIDOMKeyListener> keyListener = do_QueryInterface(mEventListener);
if (!keyListener) { return NS_ERROR_NO_INTERFACE; }
reciever->AddEventListenerByIID(keyListener, NS_GET_IID(nsIDOMKeyListener));
return result;
}
//---------------------------------------------------------
nscoord
nsListControlFrame::GetVerticalInsidePadding(nsIPresContext* aPresContext,
float aPixToTwip,
nscoord aInnerHeight) const
{
return NSIntPixelsToTwips(0, aPixToTwip);
}
//---------------------------------------------------------
nscoord
nsListControlFrame::GetHorizontalInsidePadding(nsIPresContext* aPresContext,
float aPixToTwip,
nscoord aInnerWidth,
nscoord aCharWidth) const
{
return GetVerticalInsidePadding(aPresContext, aPixToTwip, aInnerWidth);
}
//---------------------------------------------------------
// Returns whether the nsIDOMHTMLSelectElement supports
// mulitple selection
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::GetMultiple(PRBool* aMultiple, nsIDOMHTMLSelectElement* aSelect)
{
if (!aSelect) {
nsIDOMHTMLSelectElement* selectElement = nsnull;
nsresult result = mContent->QueryInterface(NS_GET_IID(nsIDOMHTMLSelectElement),
(void**)&selectElement);
if (NS_SUCCEEDED(result) && selectElement) {
result = selectElement->GetMultiple(aMultiple);
NS_RELEASE(selectElement);
}
return result;
} else {
return aSelect->GetMultiple(aMultiple);
}
}
//---------------------------------------------------------
// for a given piece of content it returns nsIDOMHTMLSelectElement object
// or null
//---------------------------------------------------------
nsIDOMHTMLSelectElement*
nsListControlFrame::GetSelect(nsIContent * aContent)
{
nsIDOMHTMLSelectElement* selectElement = nsnull;
nsresult result = aContent->QueryInterface(NS_GET_IID(nsIDOMHTMLSelectElement),
(void**)&selectElement);
if (NS_SUCCEEDED(result) && selectElement) {
return selectElement;
} else {
return nsnull;
}
}
//---------------------------------------------------------
// Returns the nsIContent object in the collection
// for a given index (AddRefs)
//---------------------------------------------------------
nsIContent*
nsListControlFrame::GetOptionAsContent(nsIDOMHTMLCollection* aCollection, PRInt32 aIndex)
{
nsIContent * content = nsnull;
nsCOMPtr<nsIDOMHTMLOptionElement> optionElement = getter_AddRefs(GetOption(*aCollection, aIndex));
NS_ASSERTION(optionElement.get() != nsnull, "could get option element by index!");
if (optionElement) {
optionElement->QueryInterface(NS_GET_IID(nsIContent),(void**) &content);
}
return content;
}
//---------------------------------------------------------
// for a given index it returns the nsIContent object
// from the select
//---------------------------------------------------------
nsIContent*
nsListControlFrame::GetOptionContent(PRInt32 aIndex)
{
nsIContent* content = nsnull;
nsCOMPtr<nsIDOMHTMLCollection> options = getter_AddRefs(GetOptions(mContent));
NS_ASSERTION(options.get() != nsnull, "Collection of options is null!");
if (options) {
content = GetOptionAsContent(options, aIndex);
}
return(content);
}
//---------------------------------------------------------
// This returns the collection for nsIDOMHTMLSelectElement or
// the nsIContent object is the select is null (AddRefs)
//---------------------------------------------------------
nsIDOMHTMLCollection*
nsListControlFrame::GetOptions(nsIContent * aContent, nsIDOMHTMLSelectElement* aSelect)
{
nsIDOMHTMLCollection* options = nsnull;
if (!aSelect) {
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement = getter_AddRefs(GetSelect(aContent));
if (selectElement) {
selectElement->GetOptions(&options); // AddRefs (1)
}
} else {
aSelect->GetOptions(&options); // AddRefs (1)
}
return options;
}
//---------------------------------------------------------
// Returns the nsIDOMHTMLOptionElement for a given index
// in the select's collection
//---------------------------------------------------------
nsIDOMHTMLOptionElement*
nsListControlFrame::GetOption(nsIDOMHTMLCollection& aCollection, PRInt32 aIndex)
{
nsIDOMNode* node = nsnull;
if (NS_SUCCEEDED(aCollection.Item(aIndex, &node))) {
NS_ASSERTION(nsnull != node, "Item was succussful, but node from collection was null!");
if (nsnull != node) {
nsIDOMHTMLOptionElement* option = nsnull;
node->QueryInterface(NS_GET_IID(nsIDOMHTMLOptionElement), (void**)&option);
NS_RELEASE(node);
return option;
}
} else {
NS_ASSERTION(0, "Couldn't get option by index from collection!");
}
return nsnull;
}
//---------------------------------------------------------
// For a given index in the collection it sets the aValue
// parameter with the "value" ATTRIBUTE from the DOM element
// This method return PR_TRUE if successful
//---------------------------------------------------------
PRBool
nsListControlFrame::GetOptionValue(nsIDOMHTMLCollection& aCollection,
PRInt32 aIndex,
nsString& aValue)
{
PRBool status = PR_FALSE;
nsresult result = NS_OK;
nsIDOMHTMLOptionElement* option = GetOption(aCollection, aIndex);
if (option) {
// Check for value attribute on the option element.
// Can not use the return value from option->GetValue() because it
// always returns NS_OK even when the value attribute does not
// exist.
nsCOMPtr<nsIHTMLContent> optionContent;
result = option->QueryInterface(kIHTMLContentIID, getter_AddRefs(optionContent));
if (NS_SUCCEEDED(result)) {
nsHTMLValue value;
result = optionContent->GetHTMLAttribute(nsHTMLAtoms::value, value);
if (NS_CONTENT_ATTR_NOT_THERE == result) {
result = option->GetText(aValue);
aValue.CompressWhitespace();
if (aValue.Length() > 0) {
status = PR_TRUE;
}
} else {
// Need to use the options GetValue to get the real value because
// it does extra processing on the return value. (i.e it trims it.)
result = option->GetValue(aValue);
status = PR_TRUE;
}
}
NS_RELEASE(option);
}
return status;
}
static int cnt = 0;
//---------------------------------------------------------
// For a given piece of content, it determines whether the
// content (an option) is selected or not
// return PR_TRUE if it is, PR_FALSE if it is NOT
//---------------------------------------------------------
PRBool
nsListControlFrame::IsContentSelected(nsIContent* aContent)
{
nsString value;
//nsIAtom * selectedAtom = NS_NewAtom("selected");
nsresult result = aContent->GetAttr(kNameSpaceID_None, nsLayoutAtoms::optionSelectedPseudo, value);
return (NS_CONTENT_ATTR_NOT_THERE == result ? PR_FALSE : PR_TRUE);
}
//---------------------------------------------------------
// For a given index is return whether the content is selected
//---------------------------------------------------------
PRBool
nsListControlFrame::IsContentSelectedByIndex(PRInt32 aIndex)
{
nsIContent* content = GetOptionContent(aIndex);
NS_ASSERTION(nsnull != content, "Failed to retrieve option content");
PRBool result = IsContentSelected(content);
NS_RELEASE(content);
return result;
}
//---------------------------------------------------------
// gets the content (an option) by index and then set it as
// being selected or not selected
//---------------------------------------------------------
void
nsListControlFrame::SetContentSelected(PRInt32 aIndex,
PRBool aSelected,
PRBool aDoScrollTo,
nsIPresShell * aPresShell)
{
if (aIndex == kNothingSelected) {
return;
}
// Check to see that the index is in the proper range. It could be out of
// range due to something like a back button being hit and the
// script that populates the list box not being executed (eg bug 88343)
PRInt32 numOptions = 0;
if (NS_SUCCEEDED(GetNumberOfOptions(&numOptions))) {
if (aIndex >= numOptions || aIndex < 0) {
mSelectedIndex = kNothingSelected;
#ifdef NS_DEBUG
printf("Index: %d Range 0:%d (setting to %s)\n", aIndex, numOptions, aSelected?"TRUE":"FALSE");
NS_ASSERTION(0, "Bad Index has been passed into SetContentSelected!");
#endif
return;
}
} else {
#ifdef NS_DEBUG
NS_ASSERTION(0, "Couldn't get number of options for select!");
#endif
}
nsIContent* content = GetOptionContent(aIndex);
NS_ASSERTION(content != nsnull, "Content should not be null!");
nsIPresShell* presShell;
if (aPresShell == nsnull) {
mPresContext->GetShell(&presShell);
} else {
presShell = aPresShell;
NS_ADDREF(presShell);
}
SetContentSelected(aIndex, content, aSelected, aDoScrollTo, presShell);
NS_RELEASE(content);
NS_RELEASE(presShell);
}
void
nsListControlFrame::SetContentSelected(PRInt32 aIndex,
nsIContent * aContent,
PRBool aSelected,
PRBool aDoScrollTo,
nsIPresShell * aPresShell)
{
if (aContent != nsnull) {
PRBool isSelected = IsContentSelected(aContent);
//if (aSelected != isSelected) {
if (aPresShell) {
nsIFrame * childframe;
nsresult result = aPresShell->GetPrimaryFrameFor(aContent, &childframe);
if (NS_SUCCEEDED(result) && childframe != nsnull) {
if (aSelected) {
DisplaySelected(aContent);
// Now that it is selected scroll to it
if (aDoScrollTo) {
ScrollToFrame(aContent);
}
} else {
DisplayDeselected(aContent);
}
} else {
mDelayedIndexSetting = aIndex;
mDelayedValueSetting = aSelected;
}
}
//}
}
}
//---------------------------------------------------------
// Deselects all the content items in the select
//---------------------------------------------------------
nsresult
nsListControlFrame::Deselect()
{
/* This code works fine but it
* isn't quite as efficient as the code below
PRInt32 i;
PRInt32 max = 0;
if (NS_SUCCEEDED(GetNumberOfOptions(&max))) {
for (i=0;i<max;i++) {
SetContentSelected(i, PR_FALSE);
}
}
*/
nsCOMPtr<nsIDOMHTMLCollection> options = getter_AddRefs(GetOptions(mContent));
if (options) {
PRUint32 length = 0;
options->GetLength(&length);
PRUint32 i;
for (i=0;i<length;i++) {
nsCOMPtr<nsIDOMNode> node;
if (NS_SUCCEEDED(options->Item(i, getter_AddRefs(node)))) {
nsCOMPtr<nsIContent> content(do_QueryInterface(node));
if (content && IsContentSelected(content)) {
DisplayDeselected(content);
}
}
}
}
mSelectedIndex = kNothingSelected;
return NS_OK;
}
//---------------------------------------------------------
PRIntn
nsListControlFrame::GetSkipSides() const
{
// Don't skip any sides during border rendering
return 0;
}
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::GetType(PRInt32* aType) const
{
*aType = NS_FORM_SELECT;
return NS_OK;
}
//---------------------------------------------------------
void
nsListControlFrame::SetFormFrame(nsFormFrame* aFormFrame)
{
mFormFrame = aFormFrame;
}
//---------------------------------------------------------
PRBool
nsListControlFrame::IsSuccessful(nsIFormControlFrame* aSubmitter)
{
nsAutoString name;
PRBool disabled = PR_FALSE;
nsFormControlHelper::GetDisabled(mContent, &disabled);
return !disabled && (NS_CONTENT_ATTR_HAS_VALUE == GetName(&name));
}
//---------------------------------------------------------
void
nsListControlFrame::MouseClicked(nsIPresContext* aPresContext)
{
}
//---------------------------------------------------------
PRInt32
nsListControlFrame::GetMaxNumValues()
{
PRBool multiple;
GetMultiple(&multiple);
if (multiple) {
PRUint32 length = 0;
nsIDOMHTMLCollection* options = GetOptions(mContent);
if (options) {
options->GetLength(&length);
NS_RELEASE(options);
}
return (PRInt32)length; // XXX fix return on GetMaxNumValues
} else {
return 1;
}
}
//---------------------------------------------------------
// Resets the select back to it's original default values;
// those values as determined by the original HTML
//---------------------------------------------------------
void
nsListControlFrame::ResetList(nsIPresContext* aPresContext, nsVoidArray * aInxList)
{
REFLOW_DEBUG_MSG("LBX::ResetList\n");
// if all the frames aren't here
// don't bother reseting
if (!mIsAllFramesHere) {
return;
}
nsCOMPtr<nsIDOMHTMLCollection> options = getter_AddRefs(GetOptions(mContent));
if (!options) {
return;
}
// Check here to see if this listbox has has its state restored
// Either by being a list or by being a dropdown.
// if we have been restored then we don't set any of the default selections
PRBool hasBeenRestored = mPresState != nsnull;
PRUint32 numOptions;
options->GetLength(&numOptions);
mSelectedIndex = kNothingSelected;
mStartExtendedIndex = kNothingSelected;
mEndExtendedIndex = kNothingSelected;
PRBool multiple;
GetMultiple(&multiple);
// Clear the cache and set the default selections
// if we haven't been restored
nsCOMPtr<nsIPresShell> presShell;
aPresContext->GetShell(getter_AddRefs(presShell));
// This code has been reworked to make it as efficient as possible.
// In the case, where it is a single select, we do not select any items
// while they are being reset, we wait until the end and set the selected
// item once. This also means that when it is a multiple select
// we set the selected item twice, but the cost at that point is very low.
PRUint32 i;
for (i = 0; i < numOptions; i++) {
nsCOMPtr<nsIDOMHTMLOptionElement> option = getter_AddRefs(GetOption(*options, i));
if (option) {
PRBool selected = PR_FALSE;
if (!hasBeenRestored) {
option->GetDefaultSelected(&selected);
}
if (aInxList) {
selected = aInxList->IndexOf((void*)i) > -1;
}
nsCOMPtr<nsIContent> content(do_QueryInterface(option));
if (selected) {
NS_ASSERTION(content, "There is no way this could be nsnull");
mSelectedIndex = i;
if (multiple) {
SetContentSelected(i, content, PR_TRUE, PR_FALSE, presShell);
mStartExtendedIndex = i;
if (mEndExtendedIndex == kNothingSelected) {
mEndExtendedIndex = i;
}
}
} else if (IsContentSelected(content)){
SetContentSelected(i, content, PR_FALSE, PR_FALSE, presShell);
}
}
}
// To make the final adjustments
// set the selected item to true and scroll to it
PRUint32 indexToSelect;
if (multiple) {
indexToSelect = mStartExtendedIndex;
} else {
indexToSelect = mSelectedIndex;
}
SetContentSelected(indexToSelect, PR_TRUE, PR_TRUE, presShell);
// Ok, so we were restored, now set the last known selections from the restore state.
if (hasBeenRestored) {
nsCOMPtr<nsISupports> supp;
mPresState->GetStatePropertyAsSupports(NS_LITERAL_STRING("selecteditems"), getter_AddRefs(supp));
nsresult res = NS_ERROR_NULL_POINTER;
if (!supp)
return;
nsCOMPtr<nsISupportsArray> value = do_QueryInterface(supp);
if (!value)
return;
PRUint32 count = 0;
value->Count(&count);
nsCOMPtr<nsISupportsPRInt32> thisVal;
PRInt32 j=0;
for (i=0; i<count; i++) {
nsCOMPtr<nsISupports> suppval = getter_AddRefs(value->ElementAt(i));
thisVal = do_QueryInterface(suppval);
if (thisVal) {
res = thisVal->GetData(&j);
if (NS_SUCCEEDED(res)) {
mSelectedIndex = j;
SetContentSelected(j, PR_TRUE);// might want to use ToggleSelection
if (multiple) {
mStartExtendedIndex = j;
if (mEndExtendedIndex == kNothingSelected) {
mEndExtendedIndex = j;
}
}
}
} else {
res = NS_ERROR_UNEXPECTED;
}
if (!NS_SUCCEEDED(res)) break;
}
}
if (mComboboxFrame != nsnull) {
if (mSelectedIndex == kNothingSelected) {
mComboboxFrame->MakeSureSomethingIsSelected(mPresContext);
} else {
mComboboxFrame->UpdateSelection(PR_FALSE, PR_TRUE, mSelectedIndex); // don't dispatch event
}
}
}
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::GetName(nsString* aResult)
{
nsresult result = NS_FORM_NOTOK;
if (mContent) {
nsIHTMLContent* formControl = nsnull;
result = mContent->QueryInterface(NS_GET_IID(nsIHTMLContent),(void**)&formControl);
if (NS_SUCCEEDED(result) && formControl) {
nsHTMLValue value;
result = formControl->GetHTMLAttribute(nsHTMLAtoms::name, value);
if (NS_CONTENT_ATTR_HAS_VALUE == result) {
if (eHTMLUnit_String == value.GetUnit()) {
value.GetStringValue(*aResult);
}
}
NS_RELEASE(formControl);
}
}
return result;
}
//---------------------------------------------------------
PRInt32
nsListControlFrame::GetNumberOfSelections()
{
PRInt32 count = 0;
PRInt32 length = 0;
GetNumberOfOptions(&length);
PRInt32 i = 0;
for (i = 0; i < length; i++) {
if (IsContentSelectedByIndex(i)) {
count++;
}
}
return(count);
}
//---------------------------------------------------------
PRBool
nsListControlFrame::GetNamesValues(PRInt32 aMaxNumValues, PRInt32& aNumValues,
nsString* aValues, nsString* aNames)
{
aNumValues = 0;
nsAutoString name;
nsresult result = GetName(&name);
if ((aMaxNumValues <= 0) || (NS_CONTENT_ATTR_NOT_THERE == result)) {
return PR_FALSE;
}
nsCOMPtr<nsIDOMHTMLCollection> options = getter_AddRefs(GetOptions(mContent));
if (!options) {
return PR_FALSE;
}
PRBool status = PR_FALSE;
PRBool multiple;
GetMultiple(&multiple);
if (!multiple) {
if (mSelectedIndex >= 0) {
nsAutoString value;
GetOptionValue(*options, mSelectedIndex, value);
aNumValues = 1;
aNames[0] = name;
aValues[0] = value;
status = PR_TRUE;
}
}
else {
aNumValues = 0;
PRInt32 length = 0;
GetNumberOfOptions(&length);
for (int i = 0; i < length; i++) {
if (PR_TRUE == IsContentSelectedByIndex(i)) {
nsAutoString value;
GetOptionValue(*options, i, value);
aNames[aNumValues] = name;
aValues[aNumValues] = value;
aNumValues++;
}
}
status = PR_TRUE;
}
return status;
}
//---------------------------------------------------------
void
nsListControlFrame::SetFocus(PRBool aOn, PRBool aRepaint)
{
// XXX:TODO Make set focus work
}
//---------------------------------------------------------
void
nsListControlFrame::ScrollIntoView(nsIPresContext* aPresContext)
{
if (aPresContext) {
nsCOMPtr<nsIPresShell> presShell;
aPresContext->GetShell(getter_AddRefs(presShell));
if (presShell) {
presShell->ScrollFrameIntoView(this,
NS_PRESSHELL_SCROLL_IF_NOT_VISIBLE,NS_PRESSHELL_SCROLL_IF_NOT_VISIBLE);
}
}
}
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::SetComboboxFrame(nsIFrame* aComboboxFrame)
{
nsresult rv = NS_OK;
if (nsnull != aComboboxFrame) {
rv = aComboboxFrame->QueryInterface(NS_GET_IID(nsIComboboxControlFrame),(void**) &mComboboxFrame);
}
return rv;
}
//---------------------------------------------------------
// Gets the text of the currently selected item
// if the there are zero items then an empty string is returned
// if there is nothing selected, then the 0th item's text is returned
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::GetSelectedItem(nsString & aStr)
{
aStr.SetLength(0);
nsresult rv = NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMHTMLCollection> options = getter_AddRefs(GetOptions(mContent));
if (options) {
PRUint32 numOptions;
options->GetLength(&numOptions);
if (numOptions == 0) {
rv = NS_OK;
} else {
nsCOMPtr<nsIDOMHTMLOptionElement> optionElement = getter_AddRefs(GetOption(*options, mSelectedIndex));
if (optionElement) {
#if 0 // This is for turning off labels Bug 4050
nsAutoString text;
rv = optionElement->GetLabel(text);
// the return value is always NS_OK from DOMElements
// it is meaningless to check for it
if (text.Length() > 0) {
nsAutoString compressText = text;
compressText.CompressWhitespace(PR_TRUE, PR_TRUE);
if (compressText.Length() != 0) {
text = compressText;
}
}
if (0 == text.Length()) {
// the return value is always NS_OK from DOMElements
// it is meaningless to check for it
optionElement->GetText(text);
}
aStr = text;
#else
optionElement->GetText(aStr);
#endif
rv = NS_OK;
}
}
}
return rv;
}
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::GetSelectedIndex(PRInt32 * aIndex)
{
*aIndex = mSelectedIndex;
return NS_OK;
}
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::GetSelectedIndexFromDOM(PRInt32 * aIndex)
{
// figure out which item is selected by looking at which
// option are selected
*aIndex = kNothingSelected;
nsCOMPtr<nsIDOMHTMLCollection> options = getter_AddRefs(GetOptions(mContent));
if (options) {
PRUint32 numOptions;
options->GetLength(&numOptions);
PRUint32 inx;
for (inx = 0; inx < numOptions && (*aIndex == kNothingSelected); inx++) {
nsCOMPtr<nsIContent> content = getter_AddRefs(GetOptionAsContent(options, inx));
if (nsnull != content) {
if (IsContentSelected(content)) {
*aIndex = (PRInt32)inx;
}
}
}
}
return NS_ERROR_FAILURE;
}
//---------------------------------------------------------
PRBool
nsListControlFrame::IsInDropDownMode()
{
return((nsnull == mComboboxFrame) ? PR_FALSE : PR_TRUE);
}
//---------------------------------------------------------
nsresult
nsListControlFrame::RequiresWidget(PRBool& aRequiresWidget)
{
aRequiresWidget = PR_FALSE;
return NS_OK;
}
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::GetNumberOfOptions(PRInt32* aNumOptions)
{
if (mContent != nsnull) {
nsCOMPtr<nsIDOMHTMLCollection> options = getter_AddRefs(GetOptions(mContent));
if (nsnull == options) {
*aNumOptions = 0;
} else {
PRUint32 length = 0;
options->GetLength(&length);
*aNumOptions = (PRInt32)length;
}
return NS_OK;
}
return NS_ERROR_FAILURE;
}
//---------------------------------------------------------
// Select the specified item in the listbox using control logic.
// If it a single selection listbox the previous selection will be
// de-selected.
void
nsListControlFrame::ToggleSelected(PRInt32 aIndex)
{
PRBool multiple;
GetMultiple(&multiple);
if (PR_TRUE == multiple) {
SetContentSelected(aIndex, PR_TRUE);
} else {
SetContentSelected(mSelectedIndex, PR_FALSE);
SetContentSelected(aIndex, PR_TRUE);
mSelectedIndex = aIndex;
}
}
//----------------------------------------------------------------------
// nsISelectControlFrame
//----------------------------------------------------------------------
PRBool nsListControlFrame::CheckIfAllFramesHere()
{
// Get the number of optgroups and options
//PRInt32 numContentItems = 0;
nsCOMPtr<nsIDOMNode> node(do_QueryInterface(mContent));
if (node) {
// XXX Need to find a fail proff way to determine that
// all the frames are there
mIsAllFramesHere = PR_TRUE;//NS_OK == CountAllChild(node, numContentItems);
}
// now make sure we have a frame each piece of content
return mIsAllFramesHere;
}
//-------------------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::DoneAddingContent(PRBool aIsDone)
{
mIsAllContentHere = aIsDone;
if (mIsAllContentHere) {
// Here we check to see if all the frames have been created
// for all the content.
// If so, then we can initialize;
if (mIsAllFramesHere == PR_FALSE) {
// if all the frames are now present we can initalize
if (CheckIfAllFramesHere() && mPresContext) {
mHasBeenInitialized = PR_TRUE;
ResetList(mPresContext);
}
}
}
return NS_OK;
}
//-------------------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::AddOption(nsIPresContext* aPresContext, PRInt32 aIndex)
{
StopUpdateTimer();
#ifdef DO_REFLOW_DEBUG
printf("---- Id: %d nsLCF %p Added Option %d\n", mReflowId, this, aIndex);
#endif
PRInt32 numOptions;
GetNumberOfOptions(&numOptions);
if (!mIsAllContentHere) {
nsCOMPtr<nsISelectElement> element(do_QueryInterface(mContent));
if (element) {
element->IsDoneAddingContent(&mIsAllContentHere);
if (!mIsAllContentHere) {
mIsAllFramesHere = PR_FALSE;
mHasBeenInitialized = PR_FALSE;
} else {
mIsAllFramesHere = aIndex == numOptions-1;
}
}
}
if (!mHasBeenInitialized) {
return NS_OK;
}
nsresult rv = StartUpdateTimer(aPresContext);
if (NS_SUCCEEDED(rv) && mUpdateTimer != nsnull) {
mUpdateTimer->ItemAdded(aIndex, numOptions);
}
return NS_OK;
}
//-------------------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::RemoveOption(nsIPresContext* aPresContext, PRInt32 aIndex)
{
StopUpdateTimer();
nsresult rv = StartUpdateTimer(aPresContext);
if (NS_SUCCEEDED(rv) && mUpdateTimer != nsnull) {
PRInt32 numOptions;
GetNumberOfOptions(&numOptions);
mUpdateTimer->ItemRemoved(aIndex, numOptions);
}
// Check to see which index is being removed
// if the current index is being removed, remember that
// if the index is less then the current index
// then decrement the current selected index
if (aIndex == mSelectedIndex) {
mUpdateTimer->SetRemovedSelectedIndex();
mSelectedIndex = kNothingSelected;
} if (aIndex < mSelectedIndex) {
mSelectedIndex--;
}
return NS_OK;
}
//-------------------------------------------------------------------
nsresult nsListControlFrame::GetPresStateAndValueArray(nsISupportsArray ** aSuppArray)
{
// Basically we need to check for and/or create
// both the PresState and the Supports Array
// There may already be a no PresState and no Supports Array
// or there may be PresState and no Supports Array
// or there may be both
// So assume we need to create the supports array and
//flip it off if we don't
PRBool createSupportsArray = PR_TRUE;
nsresult res = NS_ERROR_FAILURE;
if (mPresState) {
nsCOMPtr<nsISupports> supp;
mPresState->GetStatePropertyAsSupports(NS_LITERAL_STRING("selecteditems"), getter_AddRefs(supp));
if (supp) {
res = supp->QueryInterface(NS_GET_IID(nsISupportsArray), (void**)aSuppArray);
if (NS_FAILED(res)) {
return res;
}
createSupportsArray = PR_FALSE;
}
} else {
NS_NewPresState(getter_AddRefs(mPresState));
}
if (createSupportsArray) {
res = NS_NewISupportsArray(aSuppArray);
if (NS_SUCCEEDED(res)) {
res = mPresState->SetStatePropertyAsSupports(NS_LITERAL_STRING("selecteditems"), *aSuppArray);
}
}
return res;
}
//-------------------------------------------------------------------
nsresult nsListControlFrame::SetSelectionInPresState(PRInt32 aIndex, PRBool aValue)
{
// if there is no PresState and we ned to remove it
// from the PresState, then there is nothing to do
if (!mPresState && !aValue) {
return NS_OK;
}
nsCOMPtr<nsISupportsArray> suppArray;
nsresult res = GetPresStateAndValueArray(getter_AddRefs(suppArray));
if (NS_FAILED(res) || !suppArray)
return res;
if (aValue) {
PRUint32 count;
suppArray->Count(&count);
return SetOptionIntoPresState(suppArray, aIndex, count);
} else {
return RemoveOptionFromPresState(suppArray, aIndex);
}
}
//-------------------------------------------------------------------
nsresult nsListControlFrame::RemoveOptionFromPresState(nsISupportsArray * aSuppArray,
PRInt32 aIndex)
{
NS_ENSURE_ARG_POINTER(aSuppArray);
nsresult res = NS_ERROR_FAILURE;
PRUint32 count;
aSuppArray->Count(&count);
nsCOMPtr<nsISupportsPRInt32> thisVal;
for (PRUint32 i=0; i<count; i++) {
nsCOMPtr<nsISupports> suppval = getter_AddRefs(aSuppArray->ElementAt(i));
thisVal = do_QueryInterface(suppval);
if (thisVal) {
PRInt32 optIndex;
res = thisVal->GetData(&optIndex);
if (NS_SUCCEEDED(res)) {
if (optIndex == aIndex) {
aSuppArray->RemoveElementAt(i);
return NS_OK;
}
}
} else {
res = NS_ERROR_UNEXPECTED;
}
if (NS_FAILED(res)) break;
}
return res;
}
//-------------------------------------------------------------------
nsresult nsListControlFrame::SetOptionIntoPresState(nsISupportsArray * aSuppArray,
PRInt32 aIndex,
PRInt32 anItemNum)
{
NS_ENSURE_ARG_POINTER(aSuppArray);
nsCOMPtr<nsISupportsPRInt32> thisVal;
nsresult res = nsComponentManager::CreateInstance(NS_SUPPORTS_PRINT32_CONTRACTID,
nsnull, NS_GET_IID(nsISupportsPRInt32), (void**)getter_AddRefs(thisVal));
if (NS_SUCCEEDED(res) && thisVal) {
res = thisVal->SetData(aIndex);
if (NS_SUCCEEDED(res)) {
PRBool okay = aSuppArray->InsertElementAt((nsISupports *)thisVal, anItemNum);
if (!okay) res = NS_ERROR_OUT_OF_MEMORY; // Most likely cause;
}
}
return res;
}
//---------------------------------------------------------
// Select the specified item in the listbox using control logic.
// If it a single selection listbox the previous selection will be
// de-selected.
NS_IMETHODIMP
nsListControlFrame::SetOptionSelected(PRInt32 aIndex, PRBool aValue)
{
if (!mIsAllFramesHere && !mHasBeenInitialized) {
return SetSelectionInPresState(aIndex, aValue);
}
// The mUpdateTimer will NOT be null if this is called from script
// and it hasn't been notified.
//
// So when there is a timer and the option's new value is TRUE
// then we want to stop the timer, set the value and restart the timer.
// The timer only tracks the indexes that will be set to true,
// so if "aValue" is false we don't need to do anything.
if (mUpdateTimer != nsnull && !mUpdateTimer->HasBeenNotified()) {
if (aValue) {
StopUpdateTimer();
ToggleSelected(aIndex); // sets mSelectedIndex
nsresult rv = StartUpdateTimer(mPresContext);
if (NS_SUCCEEDED(rv) && mUpdateTimer != nsnull) {
mUpdateTimer->ItemIndexSet(aIndex);
}
}
return NS_OK;
}
// It gets here when there is a timer and it HAS been notified
// which can happen if the JS is setting the "selectedIndex" of
// the selecte and no items were added or removed form the select
PRBool multiple;
nsresult rv = GetMultiple(&multiple);
if (NS_SUCCEEDED(rv)) {
if (aValue) {
ToggleSelected(aIndex); // sets mSelectedIndex
} else {
SetContentSelected(aIndex, aValue);
if (!multiple) {
// Get the new selIndex from the DOM (may have changed)
PRInt32 selectedIndex;
GetSelectedIndexFromDOM(&selectedIndex);
if (mSelectedIndex != selectedIndex) {
ToggleSelected(selectedIndex); // sets mSelectedIndex
}
}
}
// Should we send an event here or not?
if (nsnull != mComboboxFrame && mIsAllFramesHere) {
rv = mComboboxFrame->UpdateSelection(PR_FALSE, PR_TRUE, aIndex); // don't dispatch event
}
}
return rv;
}
// Compare content state with local cache of last known state
// If there was a change, call SelectionChanged()
NS_IMETHODIMP
nsListControlFrame::UpdateSelection(PRBool aDoDispatchEvent, PRBool aForceUpdate, nsIContent* aContent)
{
if (!mIsAllFramesHere || !mIsAllContentHere) {
return NS_OK;
}
nsresult rv = NS_OK;
PRBool changed = PR_FALSE;
PRBool isDroppedDown = PR_FALSE;
if (mComboboxFrame != nsnull) {
mComboboxFrame->IsDroppedDown(&isDroppedDown);
}
if (aDoDispatchEvent && !isDroppedDown) {
rv = SelectionChanged(aContent); // Dispatch event
}
if (aForceUpdate && mComboboxFrame) {
rv = mComboboxFrame->SelectionChanged(); // Update view
}
return rv;
}
NS_IMETHODIMP
nsListControlFrame::GetOptionsContainer(nsIPresContext* aPresContext, nsIFrame** aFrame)
{
return FirstChild(aPresContext, nsnull, aFrame);
}
NS_IMETHODIMP
nsListControlFrame::OptionDisabled(nsIContent * aContent)
{
if (IsContentSelected(aContent)) {
PRInt32 inx = GetSelectedIndexFromContent(aContent);
SetOptionSelected(inx, PR_FALSE);
}
return NS_OK;
}
// Send out an onchange notification.
nsresult
nsListControlFrame::SelectionChanged(nsIContent* aContent)
{
nsresult ret = NS_ERROR_FAILURE;
// Dispatch the NS_FORM_CHANGE event
nsEventStatus status = nsEventStatus_eIgnore;
nsEvent event;
event.eventStructType = NS_EVENT;
event.message = NS_FORM_CHANGE;
nsCOMPtr<nsIPresShell> presShell;
mPresContext->GetShell(getter_AddRefs(presShell));
if (presShell) {
ret = presShell->HandleEventWithTarget(&event, this, nsnull, NS_EVENT_FLAG_INIT, &status);
}
return ret;
}
//---------------------------------------------------------
// Determine if the specified item in the listbox is selected.
NS_IMETHODIMP
nsListControlFrame::GetOptionSelected(PRInt32 aIndex, PRBool* aValue)
{
*aValue = IsContentSelectedByIndex(aIndex);
return NS_OK;
}
//----------------------------------------------------------------------
// End nsISelectControlFrame
//----------------------------------------------------------------------
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::SetProperty(nsIPresContext* aPresContext, nsIAtom* aName,
const nsAReadableString& aValue)
{
if (nsHTMLAtoms::selected == aName) {
return NS_ERROR_INVALID_ARG; // Selected is readonly according to spec.
} else if (nsHTMLAtoms::selectedindex == aName) {
PRInt32 error = 0;
nsAutoString str(aValue);
PRInt32 selectedIndex = str.ToInteger(&error, 10); // Get index from aValue
if (error) {
return NS_ERROR_INVALID_ARG; // Couldn't convert to integer
} else {
// Start by getting the num of options
// to make sure the new index is within the bounds
// if selectedIndex is -1, deselect all (bug 28143)
PRInt32 numOptions = 0;
GetNumberOfOptions(&numOptions);
if (selectedIndex < -1 || selectedIndex >= numOptions) {
return NS_ERROR_FAILURE;
}
if (selectedIndex == -1) {
Deselect();
}
else {
// Get the DOM interface for the select
// we will use this to see if it is a "multiple" select
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement = getter_AddRefs(GetSelect(mContent));
if (selectElement) {
// check to see if it is a mulitple select
PRBool multiple = PR_FALSE;
if (NS_FAILED(GetMultiple(&multiple, selectElement))) {
multiple = PR_FALSE;
}
if (mUpdateTimer != nsnull) {
if (!mUpdateTimer->HasBeenNotified()) {
StopUpdateTimer();
ToggleSelected(selectedIndex); // sets mSelectedIndex
nsresult rv = StartUpdateTimer(aPresContext);
if (NS_SUCCEEDED(rv) && mUpdateTimer != nsnull) {
mUpdateTimer->ItemIndexSet(selectedIndex);
}
return NS_OK;
}
}
// if it is a multiple, select the new item
if (multiple) {
Deselect();
SetOptionSelected(selectedIndex, PR_TRUE);
mSelectedIndex = selectedIndex;
} else {
// if it is a single select,
// check to see if it is the currect selection
// if it is, then do nothing
if (mSelectedIndex != selectedIndex) {
ToggleSelected(selectedIndex); // sets mSelectedIndex
if (nsnull != mComboboxFrame && mIsAllFramesHere) {
mComboboxFrame->UpdateSelection(PR_FALSE, PR_TRUE, selectedIndex); // do dispatch event
}
}
}
}
}
}
}
return NS_OK;
}
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::GetProperty(nsIAtom* aName, nsAWritableString& aValue)
{
// Get the selected value of option from local cache (optimization vs. widget)
if (nsHTMLAtoms::selected == aName) {
nsAutoString val(aValue);
PRInt32 error = 0;
PRBool selected = PR_FALSE;
PRInt32 indx = val.ToInteger(&error, 10); // Get index from aValue
if (error == 0)
selected = IsContentSelectedByIndex(indx);
nsFormControlHelper::GetBoolString(selected, aValue);
// For selectedIndex, get the value from the widget
} else if (nsHTMLAtoms::selectedindex == aName) {
// figures out the first selected item from the content
PRInt32 selectedIndex;
GetSelectedIndexFromDOM(&selectedIndex);
if ((kNothingSelected == selectedIndex) && (mComboboxFrame)) {
selectedIndex = 0;
}
nsAutoString str; str.AppendInt(selectedIndex, 10);
aValue.Append(str);
}
return NS_OK;
}
//---------------------------------------------------------
// Create a Borderless top level widget for drop-down lists.
nsresult
nsListControlFrame::CreateScrollingViewWidget(nsIView* aView, const nsStyleDisplay* aDisplay)
{
if (IsInDropDownMode() == PR_TRUE) {
nsWidgetInitData widgetData;
aView->SetFloating(PR_TRUE);
widgetData.mWindowType = eWindowType_popup;
widgetData.mBorderStyle = eBorderStyle_default;
#ifdef XP_MAC
static NS_DEFINE_IID(kCPopUpCID, NS_POPUP_CID);
aView->CreateWidget(kCPopUpCID, &widgetData, nsnull);
#else
static NS_DEFINE_IID(kCChildCID, NS_CHILD_CID);
aView->CreateWidget(kCChildCID, &widgetData, nsnull);
#endif
return NS_OK;
} else {
return nsScrollFrame::CreateScrollingViewWidget(aView, aDisplay);
}
}
//---------------------------------------------------------
void
nsListControlFrame::GetViewOffset(nsIViewManager* aManager, nsIView* aView,
nsPoint& aPoint)
{
aPoint.x = 0;
aPoint.y = 0;
nsIView *parent;
nsRect bounds;
parent = aView;
while (nsnull != parent) {
parent->GetBounds(bounds);
aPoint.x += bounds.x;
aPoint.y += bounds.y;
parent->GetParent(parent);
}
}
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::SyncViewWithFrame(nsIPresContext* aPresContext)
{
// Resync the view's position with the frame.
// The problem is the dropdown's view is attached directly under
// the root view. This means it's view needs to have it's coordinates calculated
// as if it were in it's normal position in the view hierarchy.
mComboboxFrame->AbsolutelyPositionDropDown();
nsPoint parentPos;
nsCOMPtr<nsIViewManager> viewManager;
//Get parent frame
nsIFrame* parent;
GetParentWithView(aPresContext, &parent);
NS_ASSERTION(parent, "GetParentWithView failed");
// Get parent view
nsIView* parentView = nsnull;
parent->GetView(aPresContext, &parentView);
parentView->GetViewManager(*getter_AddRefs(viewManager));
GetViewOffset(viewManager, parentView, parentPos);
nsIView* view = nsnull;
GetView(aPresContext, &view);
nsIView* containingView = nsnull;
nsPoint offset;
GetOffsetFromView(aPresContext, offset, &containingView);
//nsSize size;
//GetSize(size);
nscoord width;
nscoord height;
view->GetDimensions(&width, &height);
if (width != mRect.width || height != mRect.height) {
//viewManager->ResizeView(view, mRect.width, mRect.height);
}
nscoord x;
nscoord y;
view->GetPosition(&x, &y);
nscoord newX = parentPos.x + offset.x;
nscoord newY = parentPos.y + offset.y;
//if (newX != x || newY != y) {
viewManager->MoveViewTo(view, newX, newY);
//}
nsViewVisibility visibility;
view->GetVisibility(visibility);
const nsStyleVisibility* vis;
GetStyleData(eStyleStruct_Visibility, (const nsStyleStruct*&) vis);
if (visibility != vis->mVisible) {
//view->SetVisibility(NS_STYLE_VISIBILITY_VISIBLE == disp->mVisible ?nsViewVisibility_kShow:nsViewVisibility_kHide);
}
return NS_OK;
}
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::AboutToDropDown()
{
mSelectedIndexWhenPoppedDown = mSelectedIndex;
if (mIsAllContentHere && mIsAllFramesHere && mHasBeenInitialized) {
if (mSelectedIndex != kNothingSelected) {
// make sure we scroll to the correct item before it drops down
nsCOMPtr<nsIContent> content = getter_AddRefs(GetOptionContent(mSelectedIndex));
if (content) {
ScrollToFrame(content);
}
} else {
ScrollToFrame(nsnull); // this means it scrolls to 0,0
}
}
return NS_OK;
}
//---------------------------------------------------------
// We are about to be rolledup from the outside (ComboboxFrame)
NS_IMETHODIMP
nsListControlFrame::AboutToRollup()
{
// XXX To have clicking outside the combobox ALWAYS reset the contents to the
// state before it was dropped, remove the all the code in the "if" below and replace it
// with just the call to ResetSelectedItem()
//
//
// When the dropdown is dropped down via a mouse click and the user moves the mouse
// up and down without clicking, the currently selected item is being tracking inside
// the dropdown, but the combobox is not being updated. When the user selects items
// with the arrow keys, the combobox is being updated. So when the user clicks outside
// the dropdown and it needs to roll up it has to decide whether to keep the current
// selection or not. The GetIndexOfDisplayArea method is used to get the current index
// in the combobox to compare it to the current index in the dropdown to see if the combox
// has been updated and that way it knows whether to "cancel" the the current selection
// residing in the dropdown. Or whether to leave the selection alone.
if (IsInDropDownMode() == PR_TRUE) {
PRInt32 index;
mComboboxFrame->GetIndexOfDisplayArea(&index);
// if the indexes do NOT match then the selection in the combobox
// was never updated, and therefore we should reset the the selection back to
// whatever it was before it was dropped down.
if (index != mSelectedIndex) {
ResetSelectedItem();
} else {
if (IsInDropDownMode() == PR_TRUE) {
mComboboxFrame->ListWasSelected(mPresContext, PR_FALSE, PR_TRUE);
}
}
}
return NS_OK;
}
//---------------------------------------------------------
nsresult
nsListControlFrame::GetScrollingParentView(nsIPresContext* aPresContext,
nsIFrame* aParent,
nsIView** aParentView)
{
if (IsInDropDownMode() == PR_TRUE) {
// Use the parent frame to get the view manager
nsIView* parentView = nsnull;
nsresult rv = aParent->GetView(aPresContext, &parentView);
NS_ASSERTION(parentView, "GetView failed");
nsCOMPtr<nsIViewManager> viewManager;
parentView->GetViewManager(*getter_AddRefs(viewManager));
NS_ASSERTION(viewManager, "GetViewManager failed");
// Ask the view manager for the root view and
// use it as the parent for popup scrolling lists.
// Using the normal view as the parent causes the
// drop-down list to be clipped to a parent view.
// Using the root view as the parent
// prevents this from happening.
viewManager->GetRootView(*aParentView);
NS_ASSERTION(aParentView, "GetRootView failed");
return rv;
} else {
return nsScrollFrame::GetScrollingParentView(aPresContext, aParent, aParentView);
}
}
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::DidReflow(nsIPresContext* aPresContext,
nsDidReflowStatus aStatus)
{
if (PR_TRUE == IsInDropDownMode())
{
//SyncViewWithFrame();
mState &= ~NS_FRAME_SYNC_FRAME_AND_VIEW;
nsresult rv = nsScrollFrame::DidReflow(aPresContext, aStatus);
mState |= NS_FRAME_SYNC_FRAME_AND_VIEW;
SyncViewWithFrame(aPresContext);
return rv;
} else {
nsresult rv = nsScrollFrame::DidReflow(aPresContext, aStatus);
if (!mDoneWithInitialReflow && mSelectedIndex != kNothingSelected) {
nsCOMPtr<nsIContent> content = getter_AddRefs(GetOptionContent(mSelectedIndex));
if (content) {
ScrollToFrame(content);
}
mDoneWithInitialReflow = PR_TRUE;
}
return rv;
}
}
NS_IMETHODIMP nsListControlFrame::MoveTo(nsIPresContext* aPresContext, nscoord aX, nscoord aY)
{
if (PR_TRUE == IsInDropDownMode())
{
//SyncViewWithFrame();
mState &= ~NS_FRAME_SYNC_FRAME_AND_VIEW;
nsresult rv = nsScrollFrame::MoveTo(aPresContext, aX, aY);
mState |= NS_FRAME_SYNC_FRAME_AND_VIEW;
//SyncViewWithFrame();
return rv;
} else {
return nsScrollFrame::MoveTo(aPresContext, aX, aY);
}
}
NS_IMETHODIMP
nsListControlFrame::GetFrameType(nsIAtom** aType) const
{
NS_PRECONDITION(nsnull != aType, "null OUT parameter pointer");
*aType = nsLayoutAtoms::listControlFrame;
NS_ADDREF(*aType);
return NS_OK;
}
#ifdef DEBUG
NS_IMETHODIMP
nsListControlFrame::GetFrameName(nsString& aResult) const
{
return MakeFrameName("ListControl", aResult);
}
#endif
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::GetMaximumSize(nsSize &aSize)
{
aSize.width = mMaxWidth;
aSize.height = mMaxHeight;
return NS_OK;
}
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::SetSuggestedSize(nscoord aWidth, nscoord aHeight)
{
return NS_OK;
}
//---------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::IsTargetOptionDisabled(PRBool &aIsDisabled)
{
nsresult rv = NS_ERROR_FAILURE;
aIsDisabled = PR_FALSE;
nsCOMPtr<nsIEventStateManager> stateManager;
rv = mPresContext->GetEventStateManager(getter_AddRefs(stateManager));
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIContent> content;
rv = stateManager->GetEventTargetContent(nsnull, getter_AddRefs(content));
if (NS_SUCCEEDED(rv) && content) {
if (IsOptionElement(content)) {
aIsDisabled = nsFormFrame::GetDisabled(this, content);
} else {
rv = NS_ERROR_FAILURE; // return error when it is not an option
}
}
}
return rv;
}
//----------------------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::IsOptionDisabled(PRInt32 anIndex, PRBool &aIsDisabled)
{
nsCOMPtr<nsIDOMHTMLCollection> options = getter_AddRefs(GetOptions(mContent));
nsCOMPtr<nsIDOMHTMLOptionElement> optionElement;
if (options) {
optionElement = getter_AddRefs(GetOption(*options, anIndex));
nsCOMPtr<nsIContent> content = do_QueryInterface(optionElement);
if (content) {
aIsDisabled = nsFormFrame::GetDisabled(nsnull, content);
return NS_OK;
}
}
return NS_ERROR_FAILURE;
}
//----------------------------------------------------------------------
// This is used to reset the the list and it's selection because the
// selection was cancelled and the list rolled up.
void nsListControlFrame::ResetSelectedItem()
{
if (mIsAllFramesHere) {
ToggleSelected(mSelectedIndexWhenPoppedDown);
if (IsInDropDownMode() == PR_TRUE) {
mComboboxFrame->ListWasSelected(mPresContext, PR_TRUE, PR_FALSE);
}
}
}
//----------------------------------------------------------------------
// helper
//----------------------------------------------------------------------
PRBool
nsListControlFrame::IsLeftButton(nsIDOMEvent* aMouseEvent)
{
// only allow selection with the left button
nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aMouseEvent);
if (mouseEvent) {
PRUint16 whichButton;
if (NS_SUCCEEDED(mouseEvent->GetButton(&whichButton))) {
return whichButton != 0?PR_FALSE:PR_TRUE;
}
}
return PR_FALSE;
}
//----------------------------------------------------------------------
// nsIDOMMouseListener
//----------------------------------------------------------------------
nsresult
nsListControlFrame::MouseUp(nsIDOMEvent* aMouseEvent)
{
NS_ASSERTION(aMouseEvent != nsnull, "aMouseEvent is null.");
REFLOW_DEBUG_MSG("--------------------------- MouseUp ----------------------------\n");
if (nsFormFrame::GetDisabled(this)) {
return NS_OK;
}
// only allow selection with the left button
// if a right button click is on the combobox itself
// or on the select when in listbox mode, then let the click through
if (!IsLeftButton(aMouseEvent)) {
if (IsInDropDownMode() == PR_TRUE) {
if (!IsClickingInCombobox(aMouseEvent)) {
aMouseEvent->PreventDefault();
aMouseEvent->PreventCapture();
aMouseEvent->PreventBubble();
} else {
mButtonDown = PR_FALSE;
CaptureMouseEvents(mPresContext, PR_FALSE);
return NS_OK;
}
mButtonDown = PR_FALSE;
CaptureMouseEvents(mPresContext, PR_FALSE);
return NS_ERROR_FAILURE; // means consume event
} else {
mButtonDown = PR_FALSE;
CaptureMouseEvents(mPresContext, PR_FALSE);
return NS_OK;
}
}
// Check to see if the disabled option was clicked on
// NS_ERROR_FAILURE is returned is it isn't over an option
PRBool optionIsDisabled;
if (NS_OK == IsTargetOptionDisabled(optionIsDisabled)) {
if (optionIsDisabled) {
if (IsInDropDownMode() == PR_TRUE) {
ResetSelectedItem();
} else {
SetContentSelected(mSelectedIndex, PR_FALSE);
mSelectedIndex = kNothingSelected;
}
REFLOW_DEBUG_MSG(">>>>>> Option is disabled");
mButtonDown = PR_FALSE;
CaptureMouseEvents(mPresContext, PR_FALSE);
return NS_OK;
}
}
const nsStyleVisibility* vis =
(const nsStyleVisibility*)mStyleContext->GetStyleData(eStyleStruct_Visibility);
if (!vis->IsVisible()) {
REFLOW_DEBUG_MSG(">>>>>> Select is NOT visible");
return NS_OK;
}
if (IsInDropDownMode() == PR_TRUE) {
// XXX This is a bit of a hack, but.....
// But the idea here is to make sure you get an "onclick" event when you mouse
// down on the select and the drag over an option and let go
// And then NOT get an "onclick" event when when you click down on the select
// and then up outside of the select
// the EventStateManager tracks the content of the mouse down and the mouse up
// to make sure they are the same, and the onclick is sent in the PostHandleEvent
// depeneding on whether the clickCount is non-zero.
// So we cheat here by either setting or unsetting the clcikCount in the native event
// so the right thing happens for the onclick event
nsCOMPtr<nsIPrivateDOMEvent> privateEvent(do_QueryInterface(aMouseEvent));
nsMouseEvent * mouseEvent;
privateEvent->GetInternalNSEvent((nsEvent**)&mouseEvent);
if (NS_SUCCEEDED(GetIndexFromDOMEvent(aMouseEvent, mOldSelectedIndex, mSelectedIndex))) {
REFLOW_DEBUG_MSG2(">>>>>> Found Index: %d", mSelectedIndex);
if (kNothingSelected != mSelectedIndex) {
SetContentSelected(mSelectedIndex, PR_TRUE);
}
if (mComboboxFrame) {
mComboboxFrame->ListWasSelected(mPresContext, PR_TRUE, PR_TRUE);
}
mouseEvent->clickCount = 1;
} else {
// the click was out side of the select or its dropdown
mouseEvent->clickCount = IsClickingInCombobox(aMouseEvent)?1:0;
}
} else {
REFLOW_DEBUG_MSG(">>>>>> Didn't find");
mButtonDown = PR_FALSE;
CaptureMouseEvents(mPresContext, PR_FALSE);
if (mSelectedIndex != mOldSelectedIndex) {
UpdateSelection(PR_TRUE, PR_FALSE, mContent);
}
#if 0 // XXX - this is a partial fix for Bug 29990
if (mSelectedIndex != mStartExtendedIndex) {
mEndExtendedIndex = mSelectedIndex;
}
#endif
}
return NS_OK;
}
//---------------------------------------------------------
// helper method
PRBool nsListControlFrame::IsClickingInCombobox(nsIDOMEvent* aMouseEvent)
{
// Cheesey way to figure out if we clicking in the ListBox portion
// or the Combobox portion
// Return TRUE if we are clicking in the combobox frame
if (mComboboxFrame) {
nsCOMPtr<nsIDOMMouseEvent> mouseEvent(do_QueryInterface(aMouseEvent));
PRInt32 scrX;
PRInt32 scrY;
mouseEvent->GetScreenX(&scrX);
mouseEvent->GetScreenY(&scrY);
nsRect rect;
mComboboxFrame->GetAbsoluteRect(&rect);
if (rect.Contains(scrX, scrY)) {
return PR_TRUE;
}
}
return PR_FALSE;
}
//----------------------------------------------------------------------
// Sets the mSelectedIndex and mOldSelectedIndex from figuring out what
// item was selected using content
// Returns NS_OK if it successfully found the selection
//----------------------------------------------------------------------
nsresult
nsListControlFrame::GetIndexFromDOMEvent(nsIDOMEvent* aMouseEvent,
PRInt32& aOldIndex,
PRInt32& aCurIndex)
{
if (IsClickingInCombobox(aMouseEvent)) {
return NS_ERROR_FAILURE;
}
#ifdef DEBUG_rodsX
nsCOMPtr<nsIDOMMouseEvent> mouseEvent(do_QueryInterface(aMouseEvent));
nsCOMPtr<nsIDOMNode> node;
mouseEvent->GetTarget(getter_AddRefs(node));
nsCOMPtr<nsIContent> content = do_QueryInterface(node);
nsCOMPtr<nsIPresShell> presShell;
mPresContext->GetShell(getter_AddRefs(presShell));
nsIFrame * frame;
nsresult result = presShell->GetPrimaryFrameFor(content, &frame);
printf("Target Frame: %p this: %p\n", frame, this);
printf("-->\n");
#endif
nsresult rv = NS_ERROR_FAILURE;
nsCOMPtr<nsIEventStateManager> stateManager;
if (NS_SUCCEEDED(mPresContext->GetEventStateManager(getter_AddRefs(stateManager)))) {
nsCOMPtr<nsIContent> content;
stateManager->GetEventTargetContent(nsnull, getter_AddRefs(content));
nsCOMPtr<nsIContent> optionContent = getter_AddRefs(GetOptionFromContent(content));
if (optionContent) {
aOldIndex = aCurIndex;
aCurIndex = GetSelectedIndexFromContent(optionContent);
rv = NS_OK;
}
}
return rv;
}
void
nsListControlFrame::GetScrollableView(nsIScrollableView*& aScrollableView)
{
aScrollableView = nsnull;
nsIView * scrollView;
GetView(mPresContext, &scrollView);
nsresult rv = scrollView->QueryInterface(NS_GET_IID(nsIScrollableView), (void**)&aScrollableView);
NS_ASSERTION(NS_SUCCEEDED(rv) && aScrollableView, "We must be able to get a ScrollableView");
}
//----------------------------------------------------------------------
nsresult
nsListControlFrame::MouseDown(nsIDOMEvent* aMouseEvent)
{
NS_ASSERTION(aMouseEvent != nsnull, "aMouseEvent is null.");
REFLOW_DEBUG_MSG("--------------------------- MouseDown ----------------------------\n");
if (nsFormFrame::GetDisabled(this)) {
return NS_OK;
}
// only allow selection with the left button
// if a right button click is on the combobox itself
// or on the select when in listbox mode, then let the click through
if (!IsLeftButton(aMouseEvent)) {
if (IsInDropDownMode()) {
if (!IsClickingInCombobox(aMouseEvent)) {
aMouseEvent->PreventDefault();
aMouseEvent->PreventCapture();
aMouseEvent->PreventBubble();
} else {
return NS_OK;
}
return NS_ERROR_FAILURE; // means consume event
} else {
return NS_OK;
}
}
// Check to see if the disabled option was clicked on
// NS_ERROR_FAILURE is returned is it isn't over an option
PRBool optionIsDisabled;
if (NS_OK == IsTargetOptionDisabled(optionIsDisabled)) {
if (optionIsDisabled) {
if (IsInDropDownMode() == PR_TRUE) {
ResetSelectedItem();
}
return NS_OK;
}
}
PRInt32 oldIndex;
PRInt32 curIndex = mSelectedIndex;
if (NS_SUCCEEDED(GetIndexFromDOMEvent(aMouseEvent, oldIndex, curIndex))) {
if (IsInDropDownMode() == PR_TRUE) {
#if 0 // Fix for Bug 50024
// the pop up stole focus away from the webshell
// now I am giving it back
nsIFrame * parentFrame;
GetParentWithView(mPresContext, &parentFrame);
if (nsnull != parentFrame) {
nsIView * pView;
parentFrame->GetView(mPresContext, &pView);
if (nsnull != pView) {
nsIWidget *window = nsnull;
nsIView *ancestor = pView;
while (nsnull != ancestor) {
ancestor->GetWidget(window); // addrefs
if (nsnull != window) {
window->SetFocus();
NS_IF_RELEASE(window);
break;
}
ancestor->GetParent(ancestor);
}
}
}
// turn back on focus events
nsCOMPtr<nsIEventStateManager> stateManager;
if (NS_SUCCEEDED(mPresContext->GetEventStateManager(getter_AddRefs(stateManager)))) {
stateManager->ConsumeFocusEvents(PR_TRUE);
}
#endif
} else {
mSelectedIndex = curIndex;
mOldSelectedIndex = oldIndex;
// Handle Like List
mButtonDown = PR_TRUE;
CaptureMouseEvents(mPresContext, PR_TRUE);
HandleListSelection(aMouseEvent);
}
} else {
// NOTE: the combo box is responsible for dropping it down
if (mComboboxFrame) {
nsCOMPtr<nsIEventStateManager> stateManager;
if (NS_SUCCEEDED(mPresContext->GetEventStateManager(getter_AddRefs(stateManager)))) {
nsIFrame * frame;
stateManager->GetEventTarget(&frame);
nsCOMPtr<nsIListControlFrame> listFrame(do_QueryInterface(frame));
if (listFrame) {
if (!IsClickingInCombobox(aMouseEvent)) {
return NS_OK;
}
} else {
if (!IsClickingInCombobox(aMouseEvent)) {
return NS_OK;
}
}
// This will consume the focus event we get from the clicking on the dropdown
//stateManager->ConsumeFocusEvents(PR_TRUE);
PRBool isDroppedDown;
mComboboxFrame->IsDroppedDown(&isDroppedDown);
mComboboxFrame->ShowDropDown(!isDroppedDown);
// Reset focus on main webshell here
//stateManager->SetContentState(mContent, NS_EVENT_STATE_FOCUS);
if (isDroppedDown) {
CaptureMouseEvents(mPresContext, PR_FALSE);
}
return NS_OK;
}
}
}
return NS_OK;
}
//----------------------------------------------------------------------
// nsIDOMMouseMotionListener
//----------------------------------------------------------------------
nsresult
nsListControlFrame::MouseMove(nsIDOMEvent* aMouseEvent)
{
NS_ASSERTION(aMouseEvent != nsnull, "aMouseEvent is null.");
//REFLOW_DEBUG_MSG("MouseMove\n");
if (IsInDropDownMode() == PR_TRUE) {
PRBool isDroppedDown = PR_FALSE;
mComboboxFrame->IsDroppedDown(&isDroppedDown);
if (isDroppedDown) {
PRInt32 oldIndex;
PRInt32 curIndex = mSelectedIndex;
if (NS_SUCCEEDED(GetIndexFromDOMEvent(aMouseEvent, oldIndex, curIndex))) {
PRBool optionIsDisabled = PR_FALSE;
if (NS_SUCCEEDED(IsTargetOptionDisabled(optionIsDisabled)) && !optionIsDisabled) {
mSelectedIndex = curIndex;
mOldSelectedIndex = oldIndex;
if (kNothingSelected != mSelectedIndex) {
if (mOldSelectedIndex != mSelectedIndex) {
if (mOldSelectedIndex != kNothingSelected) {
SetContentSelected(mOldSelectedIndex, PR_FALSE);
}
SetContentSelected(mSelectedIndex, PR_TRUE);
}
}
}
}
}
} else {// XXX - temporary until we get drag events
if (mButtonDown) {
return DragMove(aMouseEvent);
}
}
return NS_OK;
}
nsresult
nsListControlFrame::DragMove(nsIDOMEvent* aMouseEvent)
{
NS_ASSERTION(aMouseEvent != nsnull, "aMouseEvent is null.");
//REFLOW_DEBUG_MSG("DragMove\n");
if (IsInDropDownMode() == PR_FALSE) {
// check to make sure we are a mulitple select list
PRBool multipleSelections = PR_FALSE;
GetMultiple(&multipleSelections);
if (multipleSelections) {
// get the currently moused over item
PRInt32 oldIndex;
PRInt32 curIndex = mSelectedIndex;
if (NS_SUCCEEDED(GetIndexFromDOMEvent(aMouseEvent, oldIndex, curIndex))) {
if (curIndex != oldIndex) {
// select down the list
if (curIndex > oldIndex) {
PRInt32 startInx = oldIndex > mStartExtendedIndex?oldIndex+1:oldIndex;
PRInt32 endInx = curIndex > mStartExtendedIndex?curIndex+1:curIndex;
PRInt32 i;
for (i=startInx;i<endInx;i++) {
if (i != mStartExtendedIndex) { // skip the starting clicked on node
PRBool optionIsDisabled;
if (NS_OK == IsTargetOptionDisabled(optionIsDisabled)) {
if (!optionIsDisabled) {
mSelectedIndex = i;
SetContentSelected(mSelectedIndex, i > mStartExtendedIndex);
}
}
}
}
mSelectedIndex = curIndex;
} else {
// select up the list
PRInt32 startInx = oldIndex >= mStartExtendedIndex?oldIndex:oldIndex-1;
PRInt32 endInx = curIndex >= mStartExtendedIndex?curIndex:curIndex-1;
PRInt32 i;
for (i=startInx;i>endInx;i--) {
if (i != mStartExtendedIndex) { // skip the starting clicked on node
PRBool optionIsDisabled;
if (NS_OK == IsTargetOptionDisabled(optionIsDisabled)) {
if (!optionIsDisabled) {
mSelectedIndex = i;
SetContentSelected(mSelectedIndex, i < mStartExtendedIndex);
}
}
}
}
mSelectedIndex = curIndex;
}
} else {
//mOldSelectedIndex = oldIndex;
mSelectedIndex = curIndex;
}
}
} else { // Fix Bug 44454
// get the currently moused over item
PRInt32 oldIndex;
PRInt32 curIndex = mSelectedIndex;
if (NS_SUCCEEDED(GetIndexFromDOMEvent(aMouseEvent, oldIndex, curIndex))) {
if (curIndex != oldIndex) { // select down the list
SetContentSelected(mSelectedIndex, PR_FALSE);
mSelectedIndex = curIndex;
SetContentSelected(mSelectedIndex, PR_TRUE);
mStartExtendedIndex = mSelectedIndex;
mEndExtendedIndex = kNothingSelected;
}
}
} // Fix Bug 44454
}
return NS_OK;
}
//----------------------------------------------------------------------
// nsIDOMKeyListener
//----------------------------------------------------------------------
nsresult
nsListControlFrame::KeyDown(nsIDOMEvent* aKeyEvent)
{
return NS_OK;
}
//----------------------------------------------------------------------
nsresult
nsListControlFrame::ScrollToFrame(nsIContent* aOptElement)
{
nsIScrollableView * scrollableView;
GetScrollableView(scrollableView);
if (scrollableView) {
// if null is passed in we scroll to 0,0
if (nsnull == aOptElement) {
scrollableView->ScrollTo(0, 0, PR_TRUE);
return NS_OK;
}
// otherwise we find the content's frame and scroll to it
nsCOMPtr<nsIPresShell> presShell;
mPresContext->GetShell(getter_AddRefs(presShell));
nsIFrame * childframe;
nsresult result;
if (aOptElement) {
result = presShell->GetPrimaryFrameFor(aOptElement, &childframe);
} else {
return NS_ERROR_FAILURE;
}
if (NS_SUCCEEDED(result) && childframe) {
if (NS_SUCCEEDED(result) && scrollableView) {
const nsIView * clippedView;
scrollableView->GetClipView(&clippedView);
nscoord x;
nscoord y;
scrollableView->GetScrollPosition(x,y);
// get the clipped rect
nsRect rect;
clippedView->GetBounds(rect);
// now move it by the offset of the scroll position
rect.x = 0;
rect.y = 0;
rect.MoveBy(x,y);
// get the child
nsRect fRect;
childframe->GetRect(fRect);
nsPoint pnt;
nsIView * view;
childframe->GetOffsetFromView(mPresContext, pnt, &view);
// This change for 33421 (remove this comment later)
// options can be a child of an optgroup
// this checks to see the parent is an optgroup
// and then adds in the parent's y coord
// XXX this assume only one level of nesting of optgroups
// which is all the spec specifies at the moment.
nsCOMPtr<nsIContent> parentContent;
aOptElement->GetParent(*getter_AddRefs(parentContent));
nsCOMPtr<nsIDOMHTMLOptGroupElement> optGroup(do_QueryInterface(parentContent));
nsRect optRect(0,0,0,0);
if (optGroup) {
nsIFrame * optFrame;
result = presShell->GetPrimaryFrameFor(parentContent, &optFrame);
if (NS_SUCCEEDED(result) && optFrame) {
optFrame->GetRect(optRect);
}
}
fRect.y += optRect.y;
// see if the selected frame is inside the scrolled area
if (!rect.Contains(fRect)) {
// figure out which direction we are going
if (fRect.y+fRect.height >= rect.y+rect.height) {
y = fRect.y-(rect.height-fRect.height);
} else {
y = fRect.y;
}
scrollableView->ScrollTo(pnt.x, y, PR_TRUE);
}
}
}
}
return NS_OK;
}
//---------------------------------------------------------------------
// Ok, the entire idea of this routine is to move to the next item that
// is suppose to be selected. If the item is disabled then we search in
// the same direction looking for the next item to select. If we run off
// the end of the list then we start at the end of the list and search
// backwards until we get back to the original item or an enabled option
//
// anNewIndex - will get set to the new index if it finds one
// anOldIndex - gets sets to the old index if a new index is found
// aDoSetNewIndex - indicates that a new item was found and it can be selected
// aWasDisabled - means it found a new item but it was disabled
// aNumOptions - the total number of options in the list
// aDoAdjustInc - the initial increment 1-n
// aDoAdjustIncNext - the increment used to search for the next enabled option
void
nsListControlFrame::AdjustIndexForDisabledOpt(PRInt32 &anNewIndex, PRInt32 &anOldIndex,
PRBool &aDoSetNewIndex, PRBool &aWasDisabled,
PRInt32 aNumOptions, PRInt32 aDoAdjustInc,
PRInt32 aDoAdjustIncNext)
{
// the aDoAdjustInc could be a "1" for a single item or
// any number greater representing a page of items
//
PRInt32 newIndex = anNewIndex + aDoAdjustInc;
PRBool doingReverse = PR_FALSE; // means we reached the end of the list and now we are searching backwards
PRInt32 bottom = 0; // lowest index in the search range
PRInt32 top = aNumOptions;// highest index in the search range
// make sure we start off in the range
if (newIndex < bottom) {
newIndex = 0;
} else if (newIndex >= top) {
newIndex = aNumOptions-1;
}
aWasDisabled = PR_FALSE;
while (1) {
// Special Debug Code
//printf("T:%d B:%d I:%d R:%d IM:%d I:%d\n", top, bottom, newIndex, aDoAdjustInc, aDoAdjustIncNext, doingReverse);
//if (newIndex < -30 || newIndex > 30) {
// printf("********************************* Stopped!\n");
// return;
//}
// if the newIndex isn't disabled, we are golden, bail out
if (NS_OK == IsOptionDisabled(newIndex, aWasDisabled) && !aWasDisabled) {
break;
}
// it WAS disabled, so sart looking ahead for the next enabled option
newIndex += aDoAdjustIncNext;
// well, if we reach end reverse the search
if (newIndex < bottom) {
if (doingReverse) {
return; // if we are in reverse mode and reach the end bail out
} else {
// reset the newIndex to the end of the list we hit
// reverse the incrementer
// set the other end of the list to our original starting index
newIndex = bottom;
aDoAdjustIncNext = -aDoAdjustIncNext;
doingReverse = PR_TRUE;
top = anNewIndex;
}
} else if (newIndex >= top) {
if (doingReverse) {
return; // if we are in reverse mode and reach the end bail out
} else {
// reset the newIndex to the end of the list we hit
// reverse the incrementer
// set the other end of the list to our original starting index
newIndex = top - 1;
aDoAdjustIncNext = -aDoAdjustIncNext;
doingReverse = PR_TRUE;
bottom = anNewIndex;
}
}
}
// Looks like we found one
anOldIndex = anNewIndex;
anNewIndex = newIndex;
aDoSetNewIndex = PR_TRUE;
}
nsresult
nsListControlFrame::KeyPress(nsIDOMEvent* aKeyEvent)
{
NS_ASSERTION(aKeyEvent != nsnull, "keyEvent is null.");
if (nsFormFrame::GetDisabled(this))
return NS_OK;
nsresult rv = NS_ERROR_FAILURE;
PRUint32 code = 0;
PRUint32 numOptions = 0;
PRBool isShift = PR_FALSE;
nsCOMPtr<nsIDOMHTMLCollection> options;
// Start by making sure we can query for a key event
nsCOMPtr<nsIDOMKeyEvent> keyEvent = do_QueryInterface(aKeyEvent);
if (keyEvent) {
//uiEvent->GetCharCode(&code);
//REFLOW_DEBUG_MSG3("%c %d ", code, code);
keyEvent->GetKeyCode(&code);
if (code == 0) {
keyEvent->GetCharCode(&code);
}
#ifdef DO_REFLOW_DEBUG
if (code >= 32) {
REFLOW_DEBUG_MSG3("KeyCode: %c %d\n", code, code);
}
#endif
PRBool isControl = PR_FALSE;
PRBool isAlt = PR_FALSE;
PRBool isMeta = PR_FALSE;
keyEvent->GetCtrlKey(&isControl);
keyEvent->GetMetaKey(&isMeta);
if (isControl || isMeta) {
return NS_OK;
}
keyEvent->GetAltKey(&isAlt);
// Fix for Bug 62425
if (isAlt) {
#ifdef FIX_FOR_BUG_62425
if (code == nsIDOMKeyEvent::DOM_VK_UP || code == nsIDOMKeyEvent::DOM_VK_DOWN) {
if (IsInDropDownMode() == PR_TRUE) {
PRBool isDroppedDown;
mComboboxFrame->IsDroppedDown(&isDroppedDown);
mComboboxFrame->ShowDropDown(!isDroppedDown);
aKeyEvent->PreventDefault();
aKeyEvent->PreventCapture();
aKeyEvent->PreventBubble();
}
}
#endif
return NS_OK;
}
keyEvent->GetShiftKey(&isShift);
// now make sure there are options or we are wasting our time
options = getter_AddRefs(GetOptions(mContent));
if (options) {
options->GetLength(&numOptions);
if (numOptions == 0) {
return NS_OK;
}
} else{
return rv;
}
} else {
return rv;
}
// We are handling this so don't let it bubble up
aKeyEvent->PreventBubble();
// this tells us whether we need to process the new index that was set
// DOM_VK_RETURN & DOM_VK_ESCAPE will leave this false
PRBool doSetNewIndex = PR_FALSE;
// set up the old and new selected index and process it
// DOM_VK_RETURN selects the item
// DOM_VK_ESCAPE cancels the selection
// default processing checks to see if the pressed the first
// letter of an item in the list and advances to it
switch (code) {
case nsIDOMKeyEvent::DOM_VK_UP:
case nsIDOMKeyEvent::DOM_VK_LEFT: {
REFLOW_DEBUG_MSG2("DOM_VK_UP mSelectedIndex: %d ", mSelectedIndex);
if (mSelectedIndex > 0) {
PRBool wasDisabled;
AdjustIndexForDisabledOpt(mSelectedIndex, mOldSelectedIndex,
doSetNewIndex, wasDisabled,
(PRInt32)numOptions, -1, -1);
}
REFLOW_DEBUG_MSG2(" After: %d\n", mSelectedIndex);
} break;
case nsIDOMKeyEvent::DOM_VK_DOWN:
case nsIDOMKeyEvent::DOM_VK_RIGHT: {
REFLOW_DEBUG_MSG2("DOM_VK_DOWN mSelectedIndex: %d ", mSelectedIndex);
if (mSelectedIndex < (PRInt32)(numOptions-1)) {
PRBool wasDisabled;
AdjustIndexForDisabledOpt(mSelectedIndex, mOldSelectedIndex,
doSetNewIndex, wasDisabled,
(PRInt32)numOptions, 1, 1);
}
REFLOW_DEBUG_MSG2(" After: %d\n", mSelectedIndex);
} break;
case nsIDOMKeyEvent::DOM_VK_RETURN: {
if (mComboboxFrame != nsnull) {
if (IsInDropDownMode() == PR_TRUE) {
PRBool isDroppedDown;
mComboboxFrame->IsDroppedDown(&isDroppedDown);
mComboboxFrame->ListWasSelected(mPresContext, isDroppedDown, PR_TRUE);
} else {
UpdateSelection(PR_TRUE, PR_FALSE, mContent);
}
}
} break;
case nsIDOMKeyEvent::DOM_VK_ESCAPE: {
if (IsInDropDownMode() == PR_TRUE) {
ResetSelectedItem();
}
} break;
case nsIDOMKeyEvent::DOM_VK_PAGE_UP: {
if (mSelectedIndex > 0) {
PRBool wasDisabled;
AdjustIndexForDisabledOpt(mSelectedIndex, mOldSelectedIndex,
doSetNewIndex, wasDisabled,
(PRInt32)numOptions, -(mNumDisplayRows-1), -1);
}
} break;
case nsIDOMKeyEvent::DOM_VK_PAGE_DOWN: {
if (mSelectedIndex < (PRInt32)(numOptions-1)) {
PRBool wasDisabled;
AdjustIndexForDisabledOpt(mSelectedIndex, mOldSelectedIndex,
doSetNewIndex, wasDisabled,
(PRInt32)numOptions, (mNumDisplayRows-1), 1);
}
} break;
case nsIDOMKeyEvent::DOM_VK_HOME: {
if (mSelectedIndex > 0) {
mOldSelectedIndex = mSelectedIndex;
mSelectedIndex = 0;
doSetNewIndex = PR_TRUE;
}
} break;
case nsIDOMKeyEvent::DOM_VK_END: {
if ((mSelectedIndex+1) < (PRInt32)numOptions) {
mOldSelectedIndex = mSelectedIndex;
mSelectedIndex = (PRInt32)numOptions-1;
if (mSelectedIndex > (PRInt32)numOptions) {
mSelectedIndex = (PRInt32)numOptions-1;
}
doSetNewIndex = PR_TRUE;
}
} break;
default: { // Select option with this as the first character
// XXX Not I18N compliant
code = (PRUint32)ToLowerCase((PRUnichar)code);
PRInt32 selectedIndex = (mSelectedIndex == kNothingSelected ? 0 : mSelectedIndex+1) % numOptions;
PRInt32 startedAtIndex = selectedIndex;
PRBool loopedAround = PR_FALSE;
while ((selectedIndex < startedAtIndex && loopedAround) || !loopedAround) {
nsCOMPtr<nsIDOMHTMLOptionElement>optionElement = getter_AddRefs(GetOption(*options, selectedIndex));
if (optionElement) {
PRBool isDisabled = PR_FALSE;
optionElement->GetDisabled(&isDisabled);
if (!isDisabled) {
nsAutoString text;
if (NS_OK == optionElement->GetText(text)) {
text.ToLowerCase();
PRUnichar firstChar = text.CharAt(0);
if (firstChar == (PRUnichar)code) {
mOldSelectedIndex = mSelectedIndex;
mSelectedIndex = selectedIndex;
SingleSelection();
if (nsnull != mComboboxFrame && mIsAllFramesHere) {
mComboboxFrame->UpdateSelection(PR_TRUE, PR_TRUE, mSelectedIndex); // dispatch event
} else {
UpdateSelection(PR_TRUE, PR_FALSE, GetOptionContent(mSelectedIndex)); // dispatch event
}
break;
}
}
}
}
selectedIndex++;
if (selectedIndex == (PRInt32)numOptions) {
selectedIndex = 0;
loopedAround = PR_TRUE;
}
} // while
} break;//case
} // switch
// actually process the new index and let the selection code
// the scrolling for us
if (doSetNewIndex) {
PRBool multipleSelections = PR_FALSE;
GetMultiple(&multipleSelections);
if (multipleSelections && isShift) {
REFLOW_DEBUG_MSG2("mStartExtendedIndex: %d\n", mStartExtendedIndex);
// determine the direct it is moving and this if the select should be added to or not
PRBool appendSel = ((code == nsIDOMKeyEvent::DOM_VK_UP || code == nsIDOMKeyEvent::DOM_VK_LEFT) &&
mSelectedIndex < mStartExtendedIndex) ||
((code == nsIDOMKeyEvent::DOM_VK_DOWN || code == nsIDOMKeyEvent::DOM_VK_RIGHT) &&
mSelectedIndex > mStartExtendedIndex);
if (appendSel) {
SetContentSelected(mSelectedIndex, PR_TRUE);
} else {
SetContentSelected(mSelectedIndex, PR_TRUE);
SetContentSelected(mOldSelectedIndex, PR_FALSE);
}
UpdateSelection(PR_TRUE, PR_FALSE, GetOptionContent(mSelectedIndex)); // dispatch event
} else {
SingleSelection();
if (nsnull != mComboboxFrame && mIsAllFramesHere) {
mComboboxFrame->UpdateSelection(PR_TRUE, PR_TRUE, mSelectedIndex); // dispatch event
} else {
UpdateSelection(PR_TRUE, PR_FALSE, GetOptionContent(mSelectedIndex)); // dispatch event
}
mStartExtendedIndex = mSelectedIndex;
mEndExtendedIndex = kNothingSelected;
}
// XXX - Are we cover up a problem here???
// Why aren't they getting flushed each time?
// because this isn't needed for Gfx
if (IsInDropDownMode() == PR_TRUE) {
nsCOMPtr<nsIPresShell> presShell;
mPresContext->GetShell(getter_AddRefs(presShell));
presShell->FlushPendingNotifications(PR_FALSE);
}
REFLOW_DEBUG_MSG2(" After: %d\n", mSelectedIndex);
} else {
REFLOW_DEBUG_MSG(" After: SKIPPED it\n");
}
return NS_OK;
}
//----------------------------------------------------------------------
// nsIStatefulFrame
//----------------------------------------------------------------------
//----------------------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::SaveStateInternal(nsIPresContext* aPresContext, nsIPresState** aState)
{
// Don't save state before we are initialized
if (!mHasBeenInitialized) {
return NS_OK;
}
PRBool saveState = PR_FALSE;
nsresult res = NS_OK;
// Determine if we need to save state (non-default options selected)
PRInt32 i, numOptions = 0;
GetNumberOfOptions(&numOptions);
for (i = 0; i < numOptions; i++) {
nsCOMPtr<nsIContent> content = dont_AddRef(GetOptionContent(i));
nsCOMPtr<nsIDOMHTMLOptionElement> option(do_QueryInterface(content));
if (option) {
PRBool stateBool = IsContentSelected(content);
PRBool defaultStateBool = PR_FALSE;
res = option->GetDefaultSelected(&defaultStateBool);
NS_ENSURE_SUCCESS(res, res);
if (stateBool != defaultStateBool) {
saveState = PR_TRUE;
break;
}
}
}
if (saveState) {
nsCOMPtr<nsISupportsArray> value;
nsresult res = NS_NewISupportsArray(getter_AddRefs(value));
NS_ENSURE_TRUE(value, res);
PRInt32 j = 0;
for (i = 0; i < numOptions; i++) {
if (IsContentSelectedByIndex(i)) {
res = SetOptionIntoPresState(value, i, j++);
}
}
res = NS_NewPresState(aState);
NS_ENSURE_SUCCESS(res, res);
res = (*aState)->SetStatePropertyAsSupports(NS_LITERAL_STRING("selecteditems"), value);
}
return res;
}
//----------------------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::SaveState(nsIPresContext* aPresContext,
nsIPresState** aState)
{
NS_ENSURE_ARG_POINTER(aState);
if (mComboboxFrame == nsnull) {
return SaveStateInternal(aPresContext, aState);
}
return NS_ERROR_FAILURE;
}
//-----------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::RestoreStateInternal(nsIPresContext* aPresContext,
nsIPresState* aState)
{
mPresState = aState;
if (mHasBeenInitialized) { // Already called Reset, call again to update selection
ResetList(aPresContext);
}
return NS_OK;
}
//-----------------------------------------------------------
NS_IMETHODIMP
nsListControlFrame::RestoreState(nsIPresContext* aPresContext,
nsIPresState* aState)
{
NS_ENSURE_ARG_POINTER(aState);
// ignore requests for saving state that are made directly
// to the list frame by the system
// The combobox frame will call RestoreStateInternal
// to have its state saved.
//
// mComboboxFrame is null when it is a stand-alone listbox
if (mComboboxFrame == nsnull) {
return RestoreStateInternal(aPresContext, aState);
}
return NS_OK;
}
/*******************************************************************************
* nsListEventListener
******************************************************************************/
nsresult
NS_NewListEventListener(nsIListEventListener ** aInstancePtr)
{
nsListEventListener* it = new nsListEventListener();
if (nsnull == it) {
return NS_ERROR_OUT_OF_MEMORY;
}
return it->QueryInterface(NS_GET_IID(nsIListEventListener), (void **) aInstancePtr);
}
NS_IMPL_ADDREF(nsListEventListener)
NS_IMPL_RELEASE(nsListEventListener)
nsListEventListener::nsListEventListener()
{
NS_INIT_REFCNT();
}
nsListEventListener::~nsListEventListener()
{
// all refcounted objects are held as nsCOMPtrs, clear themselves
}
NS_IMETHODIMP
nsListEventListener::SetFrame(nsListControlFrame *aFrame)
{
mFrame.SetReference(aFrame->WeakReferent());
if (aFrame)
{
aFrame->GetContent(getter_AddRefs(mContent));
}
return NS_OK;
}
nsresult
nsListEventListener::QueryInterface(REFNSIID aIID, void** aInstancePtr)
{
if (nsnull == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
}
if (aIID.Equals(NS_GET_IID(nsISupports))) {
nsIDOMKeyListener *tmp = this;
nsISupports *tmp2 = tmp;
*aInstancePtr = (void*) tmp2;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsIDOMEventListener))) {
nsIDOMKeyListener *kl = (nsIDOMKeyListener*)this;
nsIDOMEventListener *temp = kl;
*aInstancePtr = (void*)temp;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsIDOMMouseMotionListener))) {
*aInstancePtr = (void*)(nsIDOMMouseMotionListener*) this;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsIDOMKeyListener))) {
*aInstancePtr = (void*)(nsIDOMKeyListener*)this;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsIDOMMouseListener))) {
*aInstancePtr = (void*)(nsIDOMMouseListener*)this;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsIListEventListener))) {
*aInstancePtr = (void*)(nsIListEventListener*)this;
NS_ADDREF_THIS();
return NS_OK;
}
return NS_NOINTERFACE;
}
nsresult
nsListEventListener::HandleEvent(nsIDOMEvent* aEvent)
{
return NS_OK;
}
/*================== nsIKeyListener =========================*/
nsresult
nsListEventListener::KeyDown(nsIDOMEvent* aKeyEvent)
{
nsListControlFrame *gfxFrame = mFrame.Reference();
if (gfxFrame && mContent)
{
return gfxFrame->KeyDown(aKeyEvent);
}
return NS_OK;
}
nsresult
nsListEventListener::KeyUp(nsIDOMEvent* aKeyEvent)
{
nsListControlFrame *gfxFrame = mFrame.Reference();
if (gfxFrame && mContent)
{
return gfxFrame->KeyUp(aKeyEvent);
}
return NS_OK;
}
nsresult
nsListEventListener::KeyPress(nsIDOMEvent* aKeyEvent)
{
nsListControlFrame *gfxFrame = mFrame.Reference();
if (gfxFrame && mContent)
{
return gfxFrame->KeyPress(aKeyEvent);
}
return NS_OK;
}
/*=============== nsIMouseListener ======================*/
nsresult
nsListEventListener::MouseDown(nsIDOMEvent* aMouseEvent)
{
nsListControlFrame *gfxFrame = mFrame.Reference();
if (gfxFrame && mContent)
{
return gfxFrame->MouseDown(aMouseEvent);
}
return NS_OK;
}
nsresult
nsListEventListener::MouseUp(nsIDOMEvent* aMouseEvent)
{
nsListControlFrame *gfxFrame = mFrame.Reference();
if (gfxFrame && mContent)
{
return gfxFrame->MouseUp(aMouseEvent);
}
return NS_OK;
}
nsresult
nsListEventListener::MouseClick(nsIDOMEvent* aMouseEvent)
{
nsListControlFrame *gfxFrame = mFrame.Reference();
if (gfxFrame && mContent)
{
return gfxFrame->MouseClick(aMouseEvent);
}
return NS_OK;
}
nsresult
nsListEventListener::MouseDblClick(nsIDOMEvent* aMouseEvent)
{
nsListControlFrame *gfxFrame = mFrame.Reference();
if (gfxFrame && mContent)
{
return gfxFrame->MouseDblClick(aMouseEvent);
}
return NS_OK;
}
nsresult
nsListEventListener::MouseOver(nsIDOMEvent* aMouseEvent)
{
nsListControlFrame *gfxFrame = mFrame.Reference();
if (gfxFrame && mContent)
{
return gfxFrame->MouseOver(aMouseEvent);
}
return NS_OK;
}
nsresult
nsListEventListener::MouseOut(nsIDOMEvent* aMouseEvent)
{
nsListControlFrame *gfxFrame = mFrame.Reference();
if (gfxFrame && mContent)
{
return gfxFrame->MouseOut(aMouseEvent);
}
return NS_OK;
}
/*=============== nsIDOMMouseMotionListener ======================*/
nsresult
nsListEventListener::MouseMove(nsIDOMEvent* aMouseEvent)
{
nsListControlFrame *gfxFrame = mFrame.Reference();
if (gfxFrame && mContent)
{
return gfxFrame->MouseMove(aMouseEvent);
}
return NS_OK;
}
nsresult
nsListEventListener::DragMove(nsIDOMEvent* aMouseEvent)
{
/*
nsListControlFrame *gfxFrame = mFrame.Reference();
if (gfxFrame && mContent)
{
return gfxFrame->DragMove(aMouseEvent);
}
*/
return NS_OK;
}
/*=============== Timer Related Code ======================*/
nsresult
nsListControlFrame::StartUpdateTimer(nsIPresContext * aPresContext)
{
if (mUpdateTimer == nsnull) {
nsresult result = NS_NewUpdateTimer(&mUpdateTimer);
if (NS_FAILED(result))
return result;
mUpdateTimer->Init(this, 0); // delay "0"
}
if (mUpdateTimer != nsnull) {
return mUpdateTimer->Start(aPresContext);
}
return NS_ERROR_FAILURE;
}
void
nsListControlFrame::StopUpdateTimer()
{
if (mUpdateTimer != nsnull) {
mUpdateTimer->Stop();
}
}
void
nsListControlFrame::ItemsHaveBeenRemoved(nsIPresContext * aPresContext)
{
// Only adjust things if it is a combobox
// removing items on a listbox should effect anything
if (IsInDropDownMode()) {
// if items were removed ahead of the selected item the
// selected index is moved down
// if the selected item was removed then we should reset the list
if (mUpdateTimer->RemovedSelectedIndex()) {
ResetList(aPresContext);
}
}
}
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