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gecko-dev
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added content state changed

This commit is contained in:
peterl%netscape.com 1999-02-27 07:15:09 +00:00
Родитель 0864f69c78
Коммит 006004dd56
24 изменённых файлов: 357 добавлений и 14 удалений
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1
content/base/public/nsIDocument.h
Просмотреть файл

@ -201,6 +201,7 @@ public:
NS_IMETHOD EndLoad() = 0;
NS_IMETHOD ContentChanged(nsIContent* aContent,
nsISupports* aSubContent) = 0;
NS_IMETHOD ContentStateChanged(nsIContent* aContent) = 0;
NS_IMETHOD AttributeChanged(nsIContent* aChild,
nsIAtom* aAttribute,
PRInt32 aHint) = 0; // See nsStyleConsts fot hint values

19
content/base/public/nsIDocumentObserver.h
Просмотреть файл

@ -91,6 +91,25 @@ public:
nsIContent* aContent,
nsISupports* aSubContent) = 0;
/**
* Notification that the state of a content node has changed.
* (ie: gained or lost focus, became active or hovered over)
* This method is called automatically by content objects
* when their state is changed (therefore there is normally
* no need to invoke this method directly). The notification
* is passed to any IDocumentObservers. The notification is
* passed on to all of the document observers. <p>
*
* This notification is not sent when a piece of content is
* added/removed from the document or the content itself changed
* (the other notifications are used for that).
*
* @param aDocument The document being observed
* @param aContent the piece of content that changed
*/
NS_IMETHOD ContentStateChanged(nsIDocument* aDocument,
nsIContent* aContent) = 0;
/**
* Notification that the content model has changed. This method is called
* automatically by content objects when an attribute's value has changed

2
content/base/src/nsContentList.h
Просмотреть файл

@ -72,6 +72,8 @@ public:
NS_IMETHOD ContentChanged(nsIDocument *aDocument,
nsIContent* aContent,
nsISupports* aSubContent) { return NS_OK; }
NS_IMETHOD ContentStateChanged(nsIDocument* aDocument,
nsIContent* aContent) { return NS_OK; }
NS_IMETHOD AttributeChanged(nsIDocument *aDocument,
nsIContent* aContent,
nsIAtom* aAttribute,

20
content/base/src/nsDocument.cpp
Просмотреть файл

@ -123,6 +123,8 @@ public:
NS_IMETHOD ContentChanged(nsIDocument *aDocument,
nsIContent* aContent,
nsISupports* aSubContent) { return NS_OK; }
NS_IMETHOD ContentStateChanged(nsIDocument* aDocument,
nsIContent* aContent) { return NS_OK; }
NS_IMETHOD AttributeChanged(nsIDocument *aDocument,
nsIContent* aContent,
nsIAtom* aAttribute,
@ -1197,6 +1199,24 @@ nsDocument::ContentChanged(nsIContent* aContent,
return NS_OK;
}
NS_IMETHODIMP
nsDocument::ContentStateChanged(nsIContent* aContent)
{
PRInt32 count = mObservers.Count();
for (PRInt32 i = 0; i < count; i++) {
nsIDocumentObserver* observer = (nsIDocumentObserver*)mObservers[i];
observer->ContentStateChanged(this, aContent);
// Make sure that the observer didn't remove itself during the
// notification. If it did, update our index and count.
if (observer != (nsIDocumentObserver*)mObservers[i]) {
i--;
count--;
}
}
return NS_OK;
}
NS_IMETHODIMP
nsDocument::ContentAppended(nsIContent* aContainer,
PRInt32 aNewIndexInContainer)

1
content/base/src/nsDocument.h
Просмотреть файл

@ -209,6 +209,7 @@ public:
NS_IMETHOD EndLoad();
NS_IMETHOD ContentChanged(nsIContent* aContent,
nsISupports* aSubContent);
NS_IMETHOD ContentStateChanged(nsIContent* aContent);
NS_IMETHOD AttributeChanged(nsIContent* aChild,
nsIAtom* aAttribute,
PRInt32 aHint);

13
content/xul/document/src/nsXULDocument.cpp
Просмотреть файл

@ -391,6 +391,8 @@ public:
NS_IMETHOD ContentChanged(nsIContent* aContent,
nsISupports* aSubContent);
NS_IMETHOD ContentStateChanged(nsIContent* aContent);
NS_IMETHOD AttributeChanged(nsIContent* aChild,
nsIAtom* aAttribute,
PRInt32 aHint); // See nsStyleConsts fot hint values
@ -1323,6 +1325,17 @@ XULDocumentImpl::ContentChanged(nsIContent* aContent,
return NS_OK;
}
NS_IMETHODIMP
XULDocumentImpl::ContentStateChanged(nsIContent* aContent)
{
PRInt32 count = mObservers.Count();
for (PRInt32 i = 0; i < count; i++) {
nsIDocumentObserver* observer = (nsIDocumentObserver*)mObservers[i];
observer->ContentStateChanged(this, aContent);
}
return NS_OK;
}
NS_IMETHODIMP
XULDocumentImpl::AttributeChanged(nsIContent* aChild,
nsIAtom* aAttribute,

91
layout/base/nsCSSFrameConstructor.cpp
Просмотреть файл

@ -3468,6 +3468,9 @@ ApplyRenderingChangeToTree(nsIPresContext* aPresContext,
// Trigger rendering updates by damaging this frame and any
// continuations of this frame.
// XXX this needs to detect the need for a view due to an opacity change and deal with it...
while (nsnull != aFrame) {
// Get the frame's bounding rect
nsRect r;
@ -3559,6 +3562,87 @@ nsCSSFrameConstructor::ContentChanged(nsIPresContext* aPresContext,
return rv;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ContentStateChanged(nsIPresContext* aPresContext,
nsIContent* aContent)
{
nsresult result = NS_OK;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsIFrame* frame;
shell->GetPrimaryFrameFor(aContent, &frame);
PRInt32 hint = NS_STYLE_HINT_NONE;
PRBool reflow = PR_FALSE;
PRBool reframe = PR_FALSE;
PRBool render = PR_FALSE;
PRBool notify = PR_FALSE;
#if 0
NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
("HTMLStyleSheet::ContentStateChanged: content=%p[%s] frame=%p",
aContent, ContentTag(aContent, 0), frame));
#endif
if (frame) {
nsIStyleContext* oldFrameContext;
frame->GetStyleContext(&oldFrameContext);
NS_ASSERTION(nsnull != oldFrameContext, "frame must have style context");
if (oldFrameContext) {
nsIStyleContext* parentContext = oldFrameContext->GetParent();
frame->ReResolveStyleContext(aPresContext, parentContext);
NS_IF_RELEASE(parentContext);
nsIStyleContext* newFrameContext;
frame->GetStyleContext(&newFrameContext);
if (newFrameContext) {
if (newFrameContext != oldFrameContext) {
newFrameContext->CalcStyleDifference(oldFrameContext, hint);
}
NS_RELEASE(newFrameContext);
}
NS_RELEASE(oldFrameContext);
}
switch (hint) {
default:
case NS_STYLE_HINT_UNKNOWN:
case NS_STYLE_HINT_FRAMECHANGE:
reframe = PR_TRUE;
case NS_STYLE_HINT_REFLOW:
reflow = PR_TRUE;
case NS_STYLE_HINT_VISUAL:
render = PR_TRUE;
case NS_STYLE_HINT_CONTENT:
notify = PR_TRUE;
case NS_STYLE_HINT_AURAL:
case NS_STYLE_HINT_NONE:
break;
}
// apply changes
if (reframe) {
result = RecreateFramesForContent(aPresContext, aContent);
}
else if (reflow) {
StyleChangeReflow(aPresContext, frame, nsnull);
}
else if (render) {
ApplyRenderingChangeToTree(aPresContext, frame);
}
else if (notify) {
result = frame->ContentChanged(aPresContext, aContent, nsnull);
}
}
else {
result = RecreateFramesForContent(aPresContext, aContent);
}
return result;
}
NS_IMETHODIMP
nsCSSFrameConstructor::AttributeChanged(nsIPresContext* aPresContext,
@ -3617,7 +3701,7 @@ nsCSSFrameConstructor::AttributeChanged(nsIPresContext* aPresContext,
// apply changes
if (PR_TRUE == reframe) {
RecreateFramesOnAttributeChange(aPresContext, aContent, aAttribute);
RecreateFramesForContent(aPresContext, aContent);
}
else if (PR_TRUE == restyle) {
// If there is no frame then there is no point in re-styling it,
@ -4155,9 +4239,8 @@ nsCSSFrameConstructor::CreateContinuingFrame(nsIPresContext* aPresContext,
}
nsresult
nsCSSFrameConstructor::RecreateFramesOnAttributeChange(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIAtom* aAttribute)
nsCSSFrameConstructor::RecreateFramesForContent(nsIPresContext* aPresContext,
nsIContent* aContent)
{
nsresult rv = NS_OK;

8
layout/base/nsCSSFrameConstructor.h
Просмотреть файл

@ -78,6 +78,8 @@ public:
NS_IMETHOD ContentChanged(nsIPresContext* aPresContext,
nsIContent* aContent,
nsISupports* aSubContent);
NS_IMETHOD ContentStateChanged(nsIPresContext* aPresContext,
nsIContent* aContent);
NS_IMETHOD AttributeChanged(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIAtom* aAttribute,
@ -369,9 +371,9 @@ protected:
PRBool aIsFixedPositioned,
PRBool aCreateBlock);
nsresult RecreateFramesOnAttributeChange(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIAtom* aAttribute);
nsresult RecreateFramesForContent(nsIPresContext* aPresContext,
nsIContent* aContent);
nsresult CreateContinuingOuterTableFrame(nsIPresContext* aPresContext,
nsIFrame* aFrame,

18
layout/base/nsPresShell.cpp
Просмотреть файл

@ -205,6 +205,8 @@ public:
NS_IMETHOD ContentChanged(nsIDocument *aDocument,
nsIContent* aContent,
nsISupports* aSubContent);
NS_IMETHOD ContentStateChanged(nsIDocument* aDocument,
nsIContent* aContent);
NS_IMETHOD AttributeChanged(nsIDocument *aDocument,
nsIContent* aContent,
nsIAtom* aAttribute,
@ -1482,6 +1484,22 @@ PresShell::ContentChanged(nsIDocument *aDocument,
return rv;
}
NS_IMETHODIMP
PresShell::ContentStateChanged(nsIDocument* aDocument,
nsIContent* aContent)
{
NS_PRECONDITION(nsnull != mRootFrame, "null root frame");
EnterReflowLock();
nsresult rv = mStyleSet->ContentStateChanged(mPresContext, aContent);
ExitReflowLock();
if (mSelection)
mSelection->ResetSelection(this, mRootFrame);
return rv;
}
NS_IMETHODIMP
PresShell::AttributeChanged(nsIDocument *aDocument,
nsIContent* aContent,

1
layout/base/public/nsIDocument.h
Просмотреть файл

@ -201,6 +201,7 @@ public:
NS_IMETHOD EndLoad() = 0;
NS_IMETHOD ContentChanged(nsIContent* aContent,
nsISupports* aSubContent) = 0;
NS_IMETHOD ContentStateChanged(nsIContent* aContent) = 0;
NS_IMETHOD AttributeChanged(nsIContent* aChild,
nsIAtom* aAttribute,
PRInt32 aHint) = 0; // See nsStyleConsts fot hint values

19
layout/base/public/nsIDocumentObserver.h
Просмотреть файл

@ -91,6 +91,25 @@ public:
nsIContent* aContent,
nsISupports* aSubContent) = 0;
/**
* Notification that the state of a content node has changed.
* (ie: gained or lost focus, became active or hovered over)
* This method is called automatically by content objects
* when their state is changed (therefore there is normally
* no need to invoke this method directly). The notification
* is passed to any IDocumentObservers. The notification is
* passed on to all of the document observers. <p>
*
* This notification is not sent when a piece of content is
* added/removed from the document or the content itself changed
* (the other notifications are used for that).
*
* @param aDocument The document being observed
* @param aContent the piece of content that changed
*/
NS_IMETHOD ContentStateChanged(nsIDocument* aDocument,
nsIContent* aContent) = 0;
/**
* Notification that the content model has changed. This method is called
* automatically by content objects when an attribute's value has changed

3
layout/base/public/nsIStyleFrameConstruction.h
Просмотреть файл

@ -73,6 +73,9 @@ public:
nsIContent* aContent,
nsISupports* aSubContent) = 0;
NS_IMETHOD ContentStateChanged(nsIPresContext* aPresContext,
nsIContent* aContent) = 0;
NS_IMETHOD AttributeChanged(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIAtom* aAttribute,

2
layout/base/public/nsIStyleSet.h
Просмотреть файл

@ -120,6 +120,8 @@ public:
NS_IMETHOD ContentChanged(nsIPresContext* aPresContext,
nsIContent* aContent,
nsISupports* aSubContent) = 0;
NS_IMETHOD ContentStateChanged(nsIPresContext* aPresContext,
nsIContent* aContent) = 0;
NS_IMETHOD AttributeChanged(nsIPresContext* aPresContext,
nsIContent* aChild,
nsIAtom* aAttribute,

2
layout/base/src/nsContentList.h
Просмотреть файл

@ -72,6 +72,8 @@ public:
NS_IMETHOD ContentChanged(nsIDocument *aDocument,
nsIContent* aContent,
nsISupports* aSubContent) { return NS_OK; }
NS_IMETHOD ContentStateChanged(nsIDocument* aDocument,
nsIContent* aContent) { return NS_OK; }
NS_IMETHOD AttributeChanged(nsIDocument *aDocument,
nsIContent* aContent,
nsIAtom* aAttribute,

20
layout/base/src/nsDocument.cpp
Просмотреть файл

@ -123,6 +123,8 @@ public:
NS_IMETHOD ContentChanged(nsIDocument *aDocument,
nsIContent* aContent,
nsISupports* aSubContent) { return NS_OK; }
NS_IMETHOD ContentStateChanged(nsIDocument* aDocument,
nsIContent* aContent) { return NS_OK; }
NS_IMETHOD AttributeChanged(nsIDocument *aDocument,
nsIContent* aContent,
nsIAtom* aAttribute,
@ -1197,6 +1199,24 @@ nsDocument::ContentChanged(nsIContent* aContent,
return NS_OK;
}
NS_IMETHODIMP
nsDocument::ContentStateChanged(nsIContent* aContent)
{
PRInt32 count = mObservers.Count();
for (PRInt32 i = 0; i < count; i++) {
nsIDocumentObserver* observer = (nsIDocumentObserver*)mObservers[i];
observer->ContentStateChanged(this, aContent);
// Make sure that the observer didn't remove itself during the
// notification. If it did, update our index and count.
if (observer != (nsIDocumentObserver*)mObservers[i]) {
i--;
count--;
}
}
return NS_OK;
}
NS_IMETHODIMP
nsDocument::ContentAppended(nsIContent* aContainer,
PRInt32 aNewIndexInContainer)

1
layout/base/src/nsDocument.h
Просмотреть файл

@ -209,6 +209,7 @@ public:
NS_IMETHOD EndLoad();
NS_IMETHOD ContentChanged(nsIContent* aContent,
nsISupports* aSubContent);
NS_IMETHOD ContentStateChanged(nsIContent* aContent);
NS_IMETHOD AttributeChanged(nsIContent* aChild,
nsIAtom* aAttribute,
PRInt32 aHint);

8
layout/generic/nsImageMap.cpp
Просмотреть файл

@ -901,6 +901,14 @@ nsImageMap::ContentChanged(nsIDocument *aDocument,
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::ContentStateChanged(nsIDocument* aDocument,
nsIContent* aContent)
{
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::AttributeChanged(nsIDocument *aDocument,
nsIContent* aContent,

2
layout/generic/nsImageMap.h
Просмотреть файл

@ -74,6 +74,8 @@ public:
NS_IMETHOD ContentChanged(nsIDocument *aDocument,
nsIContent* aContent,
nsISupports* aSubContent);
NS_IMETHOD ContentStateChanged(nsIDocument* aDocument,
nsIContent* aContent);
NS_IMETHOD AttributeChanged(nsIDocument *aDocument,
nsIContent* aContent,
nsIAtom* aAttribute,

8
layout/html/base/src/nsImageMap.cpp
Просмотреть файл

@ -901,6 +901,14 @@ nsImageMap::ContentChanged(nsIDocument *aDocument,
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::ContentStateChanged(nsIDocument* aDocument,
nsIContent* aContent)
{
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::AttributeChanged(nsIDocument *aDocument,
nsIContent* aContent,

2
layout/html/base/src/nsImageMap.h
Просмотреть файл

@ -74,6 +74,8 @@ public:
NS_IMETHOD ContentChanged(nsIDocument *aDocument,
nsIContent* aContent,
nsISupports* aSubContent);
NS_IMETHOD ContentStateChanged(nsIDocument* aDocument,
nsIContent* aContent);
NS_IMETHOD AttributeChanged(nsIDocument *aDocument,
nsIContent* aContent,
nsIAtom* aAttribute,

18
layout/html/base/src/nsPresShell.cpp
Просмотреть файл

@ -205,6 +205,8 @@ public:
NS_IMETHOD ContentChanged(nsIDocument *aDocument,
nsIContent* aContent,
nsISupports* aSubContent);
NS_IMETHOD ContentStateChanged(nsIDocument* aDocument,
nsIContent* aContent);
NS_IMETHOD AttributeChanged(nsIDocument *aDocument,
nsIContent* aContent,
nsIAtom* aAttribute,
@ -1482,6 +1484,22 @@ PresShell::ContentChanged(nsIDocument *aDocument,
return rv;
}
NS_IMETHODIMP
PresShell::ContentStateChanged(nsIDocument* aDocument,
nsIContent* aContent)
{
NS_PRECONDITION(nsnull != mRootFrame, "null root frame");
EnterReflowLock();
nsresult rv = mStyleSet->ContentStateChanged(mPresContext, aContent);
ExitReflowLock();
if (mSelection)
mSelection->ResetSelection(this, mRootFrame);
return rv;
}
NS_IMETHODIMP
PresShell::AttributeChanged(nsIDocument *aDocument,
nsIContent* aContent,

91
layout/html/style/src/nsCSSFrameConstructor.cpp
Просмотреть файл

@ -3468,6 +3468,9 @@ ApplyRenderingChangeToTree(nsIPresContext* aPresContext,
// Trigger rendering updates by damaging this frame and any
// continuations of this frame.
// XXX this needs to detect the need for a view due to an opacity change and deal with it...
while (nsnull != aFrame) {
// Get the frame's bounding rect
nsRect r;
@ -3559,6 +3562,87 @@ nsCSSFrameConstructor::ContentChanged(nsIPresContext* aPresContext,
return rv;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ContentStateChanged(nsIPresContext* aPresContext,
nsIContent* aContent)
{
nsresult result = NS_OK;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsIFrame* frame;
shell->GetPrimaryFrameFor(aContent, &frame);
PRInt32 hint = NS_STYLE_HINT_NONE;
PRBool reflow = PR_FALSE;
PRBool reframe = PR_FALSE;
PRBool render = PR_FALSE;
PRBool notify = PR_FALSE;
#if 0
NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
("HTMLStyleSheet::ContentStateChanged: content=%p[%s] frame=%p",
aContent, ContentTag(aContent, 0), frame));
#endif
if (frame) {
nsIStyleContext* oldFrameContext;
frame->GetStyleContext(&oldFrameContext);
NS_ASSERTION(nsnull != oldFrameContext, "frame must have style context");
if (oldFrameContext) {
nsIStyleContext* parentContext = oldFrameContext->GetParent();
frame->ReResolveStyleContext(aPresContext, parentContext);
NS_IF_RELEASE(parentContext);
nsIStyleContext* newFrameContext;
frame->GetStyleContext(&newFrameContext);
if (newFrameContext) {
if (newFrameContext != oldFrameContext) {
newFrameContext->CalcStyleDifference(oldFrameContext, hint);
}
NS_RELEASE(newFrameContext);
}
NS_RELEASE(oldFrameContext);
}
switch (hint) {
default:
case NS_STYLE_HINT_UNKNOWN:
case NS_STYLE_HINT_FRAMECHANGE:
reframe = PR_TRUE;
case NS_STYLE_HINT_REFLOW:
reflow = PR_TRUE;
case NS_STYLE_HINT_VISUAL:
render = PR_TRUE;
case NS_STYLE_HINT_CONTENT:
notify = PR_TRUE;
case NS_STYLE_HINT_AURAL:
case NS_STYLE_HINT_NONE:
break;
}
// apply changes
if (reframe) {
result = RecreateFramesForContent(aPresContext, aContent);
}
else if (reflow) {
StyleChangeReflow(aPresContext, frame, nsnull);
}
else if (render) {
ApplyRenderingChangeToTree(aPresContext, frame);
}
else if (notify) {
result = frame->ContentChanged(aPresContext, aContent, nsnull);
}
}
else {
result = RecreateFramesForContent(aPresContext, aContent);
}
return result;
}
NS_IMETHODIMP
nsCSSFrameConstructor::AttributeChanged(nsIPresContext* aPresContext,
@ -3617,7 +3701,7 @@ nsCSSFrameConstructor::AttributeChanged(nsIPresContext* aPresContext,
// apply changes
if (PR_TRUE == reframe) {
RecreateFramesOnAttributeChange(aPresContext, aContent, aAttribute);
RecreateFramesForContent(aPresContext, aContent);
}
else if (PR_TRUE == restyle) {
// If there is no frame then there is no point in re-styling it,
@ -4155,9 +4239,8 @@ nsCSSFrameConstructor::CreateContinuingFrame(nsIPresContext* aPresContext,
}
nsresult
nsCSSFrameConstructor::RecreateFramesOnAttributeChange(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIAtom* aAttribute)
nsCSSFrameConstructor::RecreateFramesForContent(nsIPresContext* aPresContext,
nsIContent* aContent)
{
nsresult rv = NS_OK;

8
layout/html/style/src/nsCSSFrameConstructor.h
Просмотреть файл

@ -78,6 +78,8 @@ public:
NS_IMETHOD ContentChanged(nsIPresContext* aPresContext,
nsIContent* aContent,
nsISupports* aSubContent);
NS_IMETHOD ContentStateChanged(nsIPresContext* aPresContext,
nsIContent* aContent);
NS_IMETHOD AttributeChanged(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIAtom* aAttribute,
@ -369,9 +371,9 @@ protected:
PRBool aIsFixedPositioned,
PRBool aCreateBlock);
nsresult RecreateFramesOnAttributeChange(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIAtom* aAttribute);
nsresult RecreateFramesForContent(nsIPresContext* aPresContext,
nsIContent* aContent);
nsresult CreateContinuingOuterTableFrame(nsIPresContext* aPresContext,
nsIFrame* aFrame,

13
rdf/content/src/nsXULDocument.cpp
Просмотреть файл

@ -391,6 +391,8 @@ public:
NS_IMETHOD ContentChanged(nsIContent* aContent,
nsISupports* aSubContent);
NS_IMETHOD ContentStateChanged(nsIContent* aContent);
NS_IMETHOD AttributeChanged(nsIContent* aChild,
nsIAtom* aAttribute,
PRInt32 aHint); // See nsStyleConsts fot hint values
@ -1323,6 +1325,17 @@ XULDocumentImpl::ContentChanged(nsIContent* aContent,
return NS_OK;
}
NS_IMETHODIMP
XULDocumentImpl::ContentStateChanged(nsIContent* aContent)
{
PRInt32 count = mObservers.Count();
for (PRInt32 i = 0; i < count; i++) {
nsIDocumentObserver* observer = (nsIDocumentObserver*)mObservers[i];
observer->ContentStateChanged(this, aContent);
}
return NS_OK;
}
NS_IMETHODIMP
XULDocumentImpl::AttributeChanged(nsIContent* aChild,
nsIAtom* aAttribute,