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Implement an nsINode interface; move some common stuff from nsIContent and

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nsIDocument to nsINode.  Bug 323311, r=sicking, sr=jst
This commit is contained in:
bzbarsky@mit.edu
2006-01-19 03:34:18 +00:00
parent 1f0f3bd5b6
commit 90d792cd36
27 changed files with 595 additions and 489 deletions
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314
content/base/src/nsGenericElement.cpp
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@@ -108,45 +108,6 @@
#include "nsIDOMDocumentType.h"
#include "nsIDOMUserDataHandler.h"
/**
* Most of the implementation of the nsIContent InsertChildAt method. Shared
* by nsDocument for insertions via DOM methods. When called from
* nsDocument, aParent will be null.
*
* @param aKid The child to insert.
* @param aIndex The index to insert at.
* @param aNotify Whether to notify.
* @param aParent The parent to use for the new child.
* @param aDocument The document to use for the new child.
* Must be non-null if aParent is null and must match
* aParent->GetCurrentDoc() if aParent is not null.
* @param aChildArray The child array to work with
*/
static nsresult
doInsertChildAt(nsIContent* aKid, PRUint32 aIndex, PRBool aNotify,
nsIContent* aParent, nsIDocument* aDocument,
nsAttrAndChildArray& aChildArray);
/**
* Most of the implementation of the nsIContent RemoveChildAt method. Shared
* by nsDocument for removals via DOM methods, sometimes. When called from
* nsDocument, aParent will be null.
*
* @param aIndex The index to remove at.
* @param aNotify Whether to notify.
* @param aKid The kid at aIndex. Must not be null.
* @param aParent The parent we're removing from.
* @param aDocument The document we're removing from.
* Must be non-null if aParent is null and must match
* aParent->GetCurrentDoc() if aParent is not null.
* @param aChildArray The child array to work with
*/
static nsresult
doRemoveChildAt(PRUint32 aIndex, PRBool aNotify, nsIContent* aKid,
nsIContent* aParent, nsIDocument* aDocument,
nsAttrAndChildArray& aChildArray);
#ifdef MOZ_SVG
PRBool NS_SVG_TestFeature(const nsAString &fstr);
#endif /* MOZ_SVG */
@@ -2711,37 +2672,33 @@ nsGenericElement::InsertChildAt(nsIContent* aKid,
}
static nsresult
doInsertChildAt(nsIContent* aKid, PRUint32 aIndex, PRBool aNotify,
nsIContent* aParent, nsIDocument* aDocument,
nsAttrAndChildArray& aChildArray)
/* static */
nsresult
nsGenericElement::doInsertChildAt(nsIContent* aKid, PRUint32 aIndex,
PRBool aNotify, nsIContent* aParent,
nsIDocument* aDocument,
nsAttrAndChildArray& aChildArray)
{
NS_PRECONDITION(aParent || aDocument, "Must have document if no parent!");
NS_PRECONDITION(!aParent || aParent->GetCurrentDoc() == aDocument,
"Incorrect aDocument");
mozAutoDocUpdate updateBatch(aDocument, UPDATE_CONTENT_MODEL, aNotify);
// Note that SetRootContent already deals with binding, so if we plan to call
// it we shouldn't bind ourselves.
// XXXbz this doesn't put aKid in the right spot, really... We really need a
// better api for handling kids on documents.
if (!aParent && aKid->IsContentOfType(nsIContent::eELEMENT)) {
nsresult rv = aDocument->SetRootContent(aKid);
NS_ENSURE_SUCCESS(rv, rv);
} else {
nsresult rv = aChildArray.InsertChildAt(aKid, aIndex);
NS_ENSURE_SUCCESS(rv, rv);
PRBool isAppend = (aIndex == aChildArray.ChildCount());
rv = aKid->BindToTree(aDocument, aParent, nsnull, PR_TRUE);
if (NS_FAILED(rv)) {
aChildArray.RemoveChildAt(aIndex);
aKid->UnbindFromTree();
return rv;
}
mozAutoDocUpdate updateBatch(aDocument, UPDATE_CONTENT_MODEL, aNotify);
nsresult rv = aChildArray.InsertChildAt(aKid, aIndex);
NS_ENSURE_SUCCESS(rv, rv);
rv = aKid->BindToTree(aDocument, aParent, nsnull, PR_TRUE);
if (NS_FAILED(rv)) {
aChildArray.RemoveChildAt(aIndex);
aKid->UnbindFromTree();
return rv;
}
if (aParent) {
// Adjust ranges, but only if we're not appending to the end of the list
if (aParent && !isAppend) {
nsRange::OwnerChildInserted(aParent, aIndex);
}
@@ -2757,7 +2714,7 @@ doInsertChildAt(nsIContent* aKid, PRUint32 aIndex, PRBool aNotify,
if (aNotify) {
// Note that we always want to call ContentInserted when things are added
// as kids to documents
if (aParent && aIndex == aParent->GetChildCount() - 1) {
if (aParent && isAppend) {
aDocument->ContentAppended(aParent, aIndex);
} else {
aDocument->ContentInserted(aParent, aKid, aIndex);
@@ -2767,8 +2724,7 @@ doInsertChildAt(nsIContent* aKid, PRUint32 aIndex, PRBool aNotify,
// XXXbz how come we're not firing mutation listeners for adding to
// documents?
if (aParent &&
nsGenericElement::HasMutationListeners(aParent,
NS_EVENT_BITS_MUTATION_NODEINSERTED)) {
HasMutationListeners(aParent, NS_EVENT_BITS_MUTATION_NODEINSERTED)) {
nsMutationEvent mutation(PR_TRUE, NS_MUTATION_NODEINSERTED, aKid);
mutation.mRelatedNode = do_QueryInterface(aParent);
@@ -2783,47 +2739,12 @@ doInsertChildAt(nsIContent* aKid, PRUint32 aIndex, PRBool aNotify,
nsresult
nsGenericElement::AppendChildTo(nsIContent* aKid, PRBool aNotify)
{
NS_PRECONDITION(aKid && this != aKid, "null ptr");
nsresult rv = WillAddOrRemoveChild(aKid, GetChildCount(), PR_FALSE);
NS_ENSURE_SUCCESS(rv, rv);
nsIDocument *document = GetCurrentDoc();
mozAutoDocUpdate updateBatch(document, UPDATE_CONTENT_MODEL, aNotify);
rv = mAttrsAndChildren.AppendChild(aKid);
NS_ENSURE_SUCCESS(rv, rv);
rv = aKid->BindToTree(document, this, nsnull, PR_TRUE);
if (NS_FAILED(rv)) {
mAttrsAndChildren.RemoveChildAt(GetChildCount() - 1);
aKid->UnbindFromTree();
return rv;
}
// ranges don't need adjustment since new child is at end of list
// The kid may have removed us from the document, so recheck that we're still
// in the document before proceeding. Also, the kid may have just removed
// itself, in which case we don't really want to fire ContentAppended or a
// mutation event.
// XXXbz What if the kid just moved us in the document? Scripts suck. We
// really need to stop running them while we're in the middle of modifying
// the DOM....
if (document && document == GetCurrentDoc() && aKid->GetParent() == this) {
if (aNotify) {
document->ContentAppended(this, GetChildCount() - 1);
}
if (HasMutationListeners(this, NS_EVENT_BITS_MUTATION_NODEINSERTED)) {
nsMutationEvent mutation(PR_TRUE, NS_MUTATION_NODEINSERTED, aKid);
mutation.mRelatedNode = do_QueryInterface(this);
nsEventStatus status = nsEventStatus_eIgnore;
aKid->HandleDOMEvent(nsnull, &mutation, nsnull, NS_EVENT_FLAG_INIT, &status);
}
}
return NS_OK;
// Make sure to _not_ call the subclass InsertChildAt here. If
// subclasses wanted to hook into this stuff, they would have
// overridden AppendChildTo.
// XXXbz maybe this should just be a non-virtual method on nsINode?
// Feels that way to me...
return nsGenericElement::InsertChildAt(aKid, GetChildCount(), aNotify);
}
nsresult
@@ -2841,84 +2762,24 @@ nsGenericElement::RemoveChildAt(PRUint32 aIndex, PRBool aNotify)
return NS_OK;
}
// Note: A lot of methods like IndexOf(), GetChildCount(), etc, need to do more
// than just look at the child array for some subclasses, so make sure to call
// them instead of just messing with aChildArray
struct nsContentOrDocument {
nsContentOrDocument(nsIContent* aContent, nsIDocument* aDocument) :
mContent(aContent), mDocument(aDocument)
{}
PRInt32 IndexOf(nsIContent* aPossibleChild)
{
return mContent ? mContent->IndexOf(aPossibleChild) :
mDocument->IndexOf(aPossibleChild);
}
PRUint32 GetChildCount()
{
return mContent ? mContent->GetChildCount() :
mDocument->GetChildCount();
}
nsIContent* GetChildAt(PRUint32 aIndex)
{
return mContent ? mContent->GetChildAt(aIndex) :
mDocument->GetChildAt(aIndex);
}
nsIDocument* GetOwnerDoc()
{
return mContent ? mContent->GetOwnerDoc() : mDocument;
}
nsresult InsertChildAt(nsIContent* aKid, PRUint32 aIndex, PRBool aNotify,
nsAttrAndChildArray& aChildArray)
{
// XXXbz can't quite use doInsertChildAt because InsertChildAt has this
// random subclass notification it now does... and because subclasses
// might be intercepting InsertChildAt and doing stuff.
return mContent ? mContent->InsertChildAt(aKid, aIndex, aNotify) :
doInsertChildAt(aKid, aIndex, aNotify, mContent, mDocument, aChildArray);
}
nsresult RemoveChildAt(PRUint32 aIndex, PRBool aNotify,
nsAttrAndChildArray& aChildArray)
{
// XXXbz can't quite use doRemoveChildAt because RemoveChildAt has this
// random subclass notification it now does... and because subclasses
// might be intercepting RemoveChildAt and doing stuff.
if (mContent) {
return mContent->RemoveChildAt(aIndex, aNotify);
}
nsIContent* kid = GetChildAt(aIndex);
if (kid) {
return doRemoveChildAt(aIndex, aNotify, kid, mContent, mDocument,
aChildArray);
}
return NS_OK;
}
nsIContent* mContent;
nsIDocument* mDocument;
};
static nsresult
doRemoveChildAt(PRUint32 aIndex, PRBool aNotify, nsIContent* aKid,
nsIContent* aParent, nsIDocument* aDocument,
nsAttrAndChildArray& aChildArray)
/* static */
nsresult
nsGenericElement::doRemoveChildAt(PRUint32 aIndex, PRBool aNotify,
nsIContent* aKid, nsIContent* aParent,
nsIDocument* aDocument,
nsAttrAndChildArray& aChildArray)
{
NS_PRECONDITION(aParent || aDocument, "Must have document if no parent!");
NS_PRECONDITION(!aParent || aParent->GetCurrentDoc() == aDocument,
"Incorrect aDocument");
nsContentOrDocument container(aParent, aDocument);
nsINode* container = aParent;
if (!container) {
container = aDocument;
}
NS_PRECONDITION(aKid && aKid->GetParent() == aParent &&
aKid == container.GetChildAt(aIndex), "Bogus aKid");
aKid == container->GetChildAt(aIndex), "Bogus aKid");
mozAutoDocUpdate updateBatch(aDocument, UPDATE_CONTENT_MODEL, aNotify);
@@ -2939,29 +2800,18 @@ doRemoveChildAt(PRUint32 aIndex, PRBool aNotify, nsIContent* aKid,
// Someone may have removed the kid while that event was processing...
if (!hasListeners ||
(aKid->GetParent() == aParent &&
aKid == container.GetChildAt(aIndex))) {
aKid == container->GetChildAt(aIndex))) {
if (aParent) {
nsRange::OwnerChildRemoved(aParent, aIndex, aKid);
}
// Note that SetRootContent already deals with unbinding, so if we plan to
// call it we shouldn't unbind ourselves. It also deals with removing the
// node from the child array, but not with notifying, unfortunately. So we
// have to call ContentRemoved ourselves after setting the root content.
if (!aParent && aKid->IsContentOfType(nsIContent::eELEMENT)) {
aDocument->SetRootContent(nsnull);
if (aNotify) {
aDocument->ContentRemoved(aParent, aKid, aIndex);
}
} else {
aChildArray.RemoveChildAt(aIndex);
aChildArray.RemoveChildAt(aIndex);
if (aNotify && aDocument) {
aDocument->ContentRemoved(aParent, aKid, aIndex);
}
aKid->UnbindFromTree();
if (aNotify && aDocument) {
aDocument->ContentRemoved(aParent, aKid, aIndex);
}
aKid->UnbindFromTree();
}
return NS_OK;
@@ -3014,7 +2864,7 @@ nsGenericElement::InsertBefore(nsIDOMNode *aNewChild, nsIDOMNode *aRefChild,
nsIDOMNode **aReturn)
{
return doInsertBefore(aNewChild, aRefChild, this, GetCurrentDoc(),
mAttrsAndChildren, aReturn);
aReturn);
}
NS_IMETHODIMP
@@ -3022,14 +2872,14 @@ nsGenericElement::ReplaceChild(nsIDOMNode* aNewChild, nsIDOMNode* aOldChild,
nsIDOMNode** aReturn)
{
return doReplaceChild(aNewChild, aOldChild, this, GetCurrentDoc(),
mAttrsAndChildren, aReturn);
aReturn);
}
NS_IMETHODIMP
nsGenericElement::RemoveChild(nsIDOMNode *aOldChild, nsIDOMNode **aReturn)
{
return doRemoveChild(aOldChild, this, GetCurrentDoc(),
mAttrsAndChildren, aReturn);
aReturn);
}
// When replacing, aRefContent is the content being replaced; when
@@ -3278,7 +3128,6 @@ NS_IMPL_ISUPPORTS1(nsFragmentObserver, nsIDocumentObserver)
nsresult
nsGenericElement::doInsertBefore(nsIDOMNode* aNewChild, nsIDOMNode* aRefChild,
nsIContent* aParent, nsIDocument* aDocument,
nsAttrAndChildArray& aChildArray,
nsIDOMNode** aReturn)
{
NS_PRECONDITION(aParent || aDocument, "Must have document if no parent!");
@@ -3295,7 +3144,10 @@ nsGenericElement::doInsertBefore(nsIDOMNode* aNewChild, nsIDOMNode* aRefChild,
nsresult res = NS_OK;
PRInt32 refPos = 0;
nsContentOrDocument container(aParent, aDocument);
nsINode* container = aParent;
if (!container) {
container = aDocument;
}
if (aRefChild) {
refContent = do_QueryInterface(aRefChild, &res);
@@ -3308,13 +3160,13 @@ nsGenericElement::doInsertBefore(nsIDOMNode* aNewChild, nsIDOMNode* aRefChild,
return NS_ERROR_DOM_NOT_FOUND_ERR;
}
refPos = container.IndexOf(refContent);
refPos = container->IndexOf(refContent);
if (refPos < 0) {
return NS_ERROR_DOM_NOT_FOUND_ERR;
}
} else {
refPos = container.GetChildCount();
refPos = container->GetChildCount();
}
nsCOMPtr<nsIContent> newContent(do_QueryInterface(aNewChild, &res));
@@ -3344,7 +3196,7 @@ nsGenericElement::doInsertBefore(nsIDOMNode* aNewChild, nsIDOMNode* aRefChild,
// what should a caller with UniversalBrowserRead/Write/whatever be able to
// do, exactly? Do we need to be more careful with documents because random
// callers _can_ get access to them? That might be....
if (old_doc && old_doc != container.GetOwnerDoc()) {
if (old_doc && old_doc != container->GetOwnerDoc()) {
if (aParent) {
if (!nsContentUtils::CanCallerAccess(aNewChild)) {
return NS_ERROR_DOM_SECURITY_ERR;
@@ -3376,7 +3228,7 @@ nsGenericElement::doInsertBefore(nsIDOMNode* aNewChild, nsIDOMNode* aRefChild,
NS_ENSURE_TRUE(doc_fragment, NS_ERROR_UNEXPECTED);
PRUint32 count = newContent->GetChildCount();
PRUint32 old_count = container.GetChildCount();
PRUint32 old_count = container->GetChildCount();
PRBool do_notify = !!aRefChild || !aParent;
@@ -3414,8 +3266,7 @@ nsGenericElement::doInsertBefore(nsIDOMNode* aNewChild, nsIDOMNode* aRefChild,
// XXXbz how come no reparenting here? That seems odd...
// Insert the child and increment the insertion position
res = container.InsertChildAt(childContent, refPos++, do_notify,
aChildArray);
res = container->InsertChildAt(childContent, refPos++, do_notify);
if (NS_FAILED(res)) {
break;
@@ -3465,14 +3316,14 @@ nsGenericElement::doInsertBefore(nsIDOMNode* aNewChild, nsIDOMNode* aRefChild,
if (oldParent) {
nsCOMPtr<nsIDOMNode> tmpNode;
PRUint32 origChildCount = container.GetChildCount();
PRUint32 origChildCount = container->GetChildCount();
/*
* We don't care here if the return fails or not.
*/
oldParent->RemoveChild(aNewChild, getter_AddRefs(tmpNode));
PRUint32 newChildCount = container.GetChildCount();
PRUint32 newChildCount = container->GetChildCount();
/*
* Check if our child count changed during the RemoveChild call, if
@@ -3487,7 +3338,7 @@ nsGenericElement::doInsertBefore(nsIDOMNode* aNewChild, nsIDOMNode* aRefChild,
* previous siblings.
*/
if (refContent == container.GetChildAt(refPos - 1)) {
if (refContent == container->GetChildAt(refPos - 1)) {
refPos--;
}
} else {
@@ -3501,11 +3352,11 @@ nsGenericElement::doInsertBefore(nsIDOMNode* aNewChild, nsIDOMNode* aRefChild,
if (!newContent->IsContentOfType(eXUL)) {
nsContentUtils::ReparentContentWrapper(newContent, aParent,
container.GetOwnerDoc(),
container->GetOwnerDoc(),
old_doc);
}
res = container.InsertChildAt(newContent, refPos, PR_TRUE, aChildArray);
res = container->InsertChildAt(newContent, refPos, PR_TRUE);
if (NS_FAILED(res)) {
return res;
@@ -3522,7 +3373,6 @@ nsGenericElement::doInsertBefore(nsIDOMNode* aNewChild, nsIDOMNode* aRefChild,
nsresult
nsGenericElement::doReplaceChild(nsIDOMNode* aNewChild, nsIDOMNode* aOldChild,
nsIContent* aParent, nsIDocument* aDocument,
nsAttrAndChildArray& aChildArray,
nsIDOMNode** aReturn)
{
NS_PRECONDITION(aParent || aDocument, "Must have document if no parent!");
@@ -3540,16 +3390,19 @@ nsGenericElement::doReplaceChild(nsIDOMNode* aNewChild, nsIDOMNode* aOldChild,
nsCOMPtr<nsIContent> oldContent = do_QueryInterface(aOldChild);
nsContentOrDocument container(aParent, aDocument);
nsINode* container = aParent;
if (!container) {
container = aDocument;
}
// if oldContent is null IndexOf will return < 0, which is what we want
// since aOldChild couldn't be a child.
oldPos = container.IndexOf(oldContent);
oldPos = container->IndexOf(oldContent);
if (oldPos < 0) {
return NS_ERROR_DOM_NOT_FOUND_ERR;
}
nsCOMPtr<nsIContent> replacedChild = container.GetChildAt(oldPos);
nsCOMPtr<nsIContent> replacedChild = container->GetChildAt(oldPos);
PRUint16 nodeType = 0;
@@ -3578,7 +3431,7 @@ nsGenericElement::doReplaceChild(nsIDOMNode* aNewChild, nsIDOMNode* aOldChild,
// what should a caller with UniversalBrowserRead/Write/whatever be able to
// do, exactly? Do we need to be more careful with documents because random
// callers _can_ get access to them? That might be....
if (old_doc && old_doc != container.GetOwnerDoc()) {
if (old_doc && old_doc != container->GetOwnerDoc()) {
if (aParent) {
if (!nsContentUtils::CanCallerAccess(aNewChild)) {
return NS_ERROR_DOM_SECURITY_ERR;
@@ -3611,7 +3464,7 @@ nsGenericElement::doReplaceChild(nsIDOMNode* aNewChild, nsIDOMNode* aOldChild,
if (nodeType == nsIDOMNode::DOCUMENT_FRAGMENT_NODE) {
nsCOMPtr<nsIContent> childContent;
PRUint32 i, count = newContent->GetChildCount();
res = container.RemoveChildAt(oldPos, PR_TRUE, aChildArray);
res = container->RemoveChildAt(oldPos, PR_TRUE);
NS_ENSURE_SUCCESS(res, res);
/*
@@ -3626,12 +3479,9 @@ nsGenericElement::doReplaceChild(nsIDOMNode* aNewChild, nsIDOMNode* aOldChild,
res = newContent->RemoveChildAt(0, PR_FALSE);
NS_ENSURE_SUCCESS(res, res);
// XXXbz need a way to insert into document here.... Maybe it's time for
// nsIContentContainer? ;)
// XXXbz how come no reparenting here?
// Insert the child and increment the insertion position
res = container.InsertChildAt(childContent, oldPos++, PR_TRUE,
aChildArray);
res = container->InsertChildAt(childContent, oldPos++, PR_TRUE);
NS_ENSURE_SUCCESS(res, res);
}
}
@@ -3647,7 +3497,7 @@ nsGenericElement::doReplaceChild(nsIDOMNode* aNewChild, nsIDOMNode* aOldChild,
* new child is alleady a child of this node-- jst@citec.fi
*/
if (oldParent) {
PRUint32 origChildCount = container.GetChildCount();
PRUint32 origChildCount = container->GetChildCount();
/*
* We don't care here if the return fails or not.
@@ -3655,7 +3505,7 @@ nsGenericElement::doReplaceChild(nsIDOMNode* aNewChild, nsIDOMNode* aOldChild,
nsCOMPtr<nsIDOMNode> tmpNode;
oldParent->RemoveChild(aNewChild, getter_AddRefs(tmpNode));
PRUint32 newChildCount = container.GetChildCount();
PRUint32 newChildCount = container->GetChildCount();
/*
* Check if our child count changed during the RemoveChild call, if
@@ -3667,7 +3517,7 @@ nsGenericElement::doReplaceChild(nsIDOMNode* aNewChild, nsIDOMNode* aOldChild,
* Check if aOldChild is now at oldPos - 1, this will happend if
* the new child was one of aOldChilds' previous siblings.
*/
nsIContent *tmpContent = container.GetChildAt(oldPos - 1);
nsIContent *tmpContent = container->GetChildAt(oldPos - 1);
if (oldContent == tmpContent) {
oldPos--;
@@ -3677,18 +3527,18 @@ nsGenericElement::doReplaceChild(nsIDOMNode* aNewChild, nsIDOMNode* aOldChild,
if (!newContent->IsContentOfType(eXUL)) {
nsContentUtils::ReparentContentWrapper(newContent, aParent,
container.GetOwnerDoc(),
container->GetOwnerDoc(),
old_doc);
}
// If we're replacing a child with itself the child
// has already been removed from this element once we get here.
if (aNewChild != aOldChild) {
res = container.RemoveChildAt(oldPos, PR_TRUE, aChildArray);
res = container->RemoveChildAt(oldPos, PR_TRUE);
NS_ENSURE_SUCCESS(res, res);
}
res = container.InsertChildAt(newContent, oldPos, PR_TRUE, aChildArray);
res = container->InsertChildAt(newContent, oldPos, PR_TRUE);
NS_ENSURE_SUCCESS(res, res);
}
@@ -3699,7 +3549,6 @@ nsGenericElement::doReplaceChild(nsIDOMNode* aNewChild, nsIDOMNode* aOldChild,
nsresult
nsGenericElement::doRemoveChild(nsIDOMNode* aOldChild,
nsIContent* aParent, nsIDocument* aDocument,
nsAttrAndChildArray& aChildArray,
nsIDOMNode** aReturn)
{
NS_PRECONDITION(aParent || aDocument, "Must have document if no parent!");
@@ -3709,16 +3558,20 @@ nsGenericElement::doRemoveChild(nsIDOMNode* aOldChild,
*aReturn = nsnull;
NS_ENSURE_TRUE(aOldChild, NS_ERROR_NULL_POINTER);
nsINode* container = aParent;
if (!container) {
container = aDocument;
}
nsCOMPtr<nsIContent> content = do_QueryInterface(aOldChild);
// fix children to be a passed argument
PRInt32 index = aChildArray.IndexOfChild(content);
PRInt32 index = container->IndexOf(content);
if (index == -1) {
// aOldChild isn't one of our children.
return NS_ERROR_DOM_NOT_FOUND_ERR;
}
nsContentOrDocument container(aParent, aDocument);
nsresult rv = container.RemoveChildAt(index, PR_TRUE, aChildArray);
nsresult rv = container->RemoveChildAt(index, PR_TRUE);
*aReturn = aOldChild;
NS_ADDREF(aOldChild);
@@ -3742,6 +3595,7 @@ NS_INTERFACE_MAP_BEGIN(nsGenericElement)
nsDOMEventRTTearoff::Create(this))
NS_INTERFACE_MAP_ENTRY_TEAROFF(nsIDOMNSEventTarget,
nsDOMEventRTTearoff::Create(this))
NS_INTERFACE_MAP_ENTRY(nsINode)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIContent)
NS_INTERFACE_MAP_END