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Bug 424027, r=peterv, sr=sicking

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This commit is contained in:
Olli.Pettay@helsinki.fi 2008-04-06 05:40:33 -07:00
parent b0e4df4591
commit 323c9fb10a
1 changed files with 43 additions and 2 deletions
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45
editor/libeditor/html/nsHTMLAnonymousUtils.cpp
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@ -57,7 +57,7 @@
#include "nsIDOMCSSValue.h"
#include "nsIDOMCSSPrimitiveValue.h"
#include "nsIDOMCSSStyleDeclaration.h"
#include "nsIMutationObserver.h"
#include "nsUnicharUtils.h"
// retrieve an integer stored into a CSS computed float value
@ -102,6 +102,36 @@ static PRInt32 GetCSSFloatValue(nsIDOMCSSStyleDeclaration * aDecl,
return (PRInt32) f;
}
class nsElementDeletionObserver : public nsIMutationObserver
{
public:
nsElementDeletionObserver(nsINode* aNativeAnonNode, nsINode* aObservedNode)
: mNativeAnonNode(aNativeAnonNode), mObservedNode(aObservedNode) {}
NS_DECL_ISUPPORTS
NS_DECL_NSIMUTATIONOBSERVER
protected:
nsINode* mNativeAnonNode;
nsINode* mObservedNode;
};
NS_IMPL_ISUPPORTS1(nsElementDeletionObserver, nsIMutationObserver)
NS_IMPL_NSIMUTATIONOBSERVER_CONTENT(nsElementDeletionObserver)
void
nsElementDeletionObserver::NodeWillBeDestroyed(const nsINode* aNode)
{
NS_ASSERTION(aNode == mNativeAnonNode || aNode == mObservedNode,
"Wrong aNode!");
if (aNode == mNativeAnonNode) {
mObservedNode->RemoveMutationObserver(this);
} else {
mNativeAnonNode->RemoveMutationObserver(this);
static_cast<nsIContent*>(mNativeAnonNode)->UnbindFromTree();
}
NS_RELEASE_THIS();
}
// Returns in *aReturn an anonymous nsDOMElement of type aTag,
// child of aParentNode. If aIsCreatedHidden is true, the class
// "hidden" is added to the created element. If aAnonClass is not
@ -113,6 +143,7 @@ nsHTMLEditor::CreateAnonymousElement(const nsAString & aTag, nsIDOMNode * aPare
{
NS_ENSURE_ARG_POINTER(aParentNode);
NS_ENSURE_ARG_POINTER(aReturn);
*aReturn = nsnull;
nsCOMPtr<nsIContent> parentContent( do_QueryInterface(aParentNode) );
if (!parentContent)
@ -158,7 +189,17 @@ nsHTMLEditor::CreateAnonymousElement(const nsAString & aTag, nsIDOMNode * aPare
newContent->UnbindFromTree();
return res;
}
nsElementDeletionObserver* observer =
new nsElementDeletionObserver(newContent, parentContent);
if (!observer) {
newContent->UnbindFromTree();
return NS_ERROR_OUT_OF_MEMORY;
}
NS_ADDREF(observer); // NodeWillBeDestroyed releases.
parentContent->AddMutationObserver(observer);
newContent->AddMutationObserver(observer);
// display the element
ps->RecreateFramesFor(newContent);