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Bug 342062: Add nsIMutationObserver which has the ability to get notifications for just mutations happening in a subtree under a given node. r/sr=bz

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This commit is contained in:
cvshook@sicking.cc
2006-07-02 07:23:10 +00:00
parent ed2755ba3d
commit e52bf42d62
62 changed files with 1292 additions and 1023 deletions
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106
content/base/src/nsGenericElement.cpp
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@@ -84,6 +84,7 @@
#include "nsIScriptSecurityManager.h"
#include "nsIDOMMutationEvent.h"
#include "nsMutationEvent.h"
#include "nsNodeUtils.h"
#include "nsIBindingManager.h"
#include "nsXBLBinding.h"
@@ -297,6 +298,30 @@ nsINode::GetListenerManager(PRBool aCreateIfNotFound,
return rv;
}
nsINode::nsSlots*
nsINode::CreateSlots()
{
return new nsSlots(mFlagsOrSlots);
}
void
nsINode::AddMutationObserver(nsIMutationObserver* aMutationObserver)
{
nsSlots* slots = GetSlots();
if (slots) {
slots->mMutationObservers.AppendObserver(aMutationObserver);
}
}
void
nsINode::RemoveMutationObserver(nsIMutationObserver* aMutationObserver)
{
nsSlots* slots = GetExistingSlots();
if (slots) {
slots->mMutationObservers.RemoveObserver(aMutationObserver);
}
}
//----------------------------------------------------------------------
void
@@ -990,12 +1015,6 @@ nsGenericElement::nsDOMSlots::~nsDOMSlots()
}
}
PRBool
nsGenericElement::nsDOMSlots::IsEmpty()
{
return (!mChildNodes && !mStyle && !mAttributeMap && !mBindingParent);
}
nsGenericElement::nsGenericElement(nsINodeInfo *aNodeInfo)
: nsIXMLContent(aNodeInfo)
{
@@ -1009,12 +1028,7 @@ nsGenericElement::~nsGenericElement()
NS_PRECONDITION(!IsInDoc(),
"Please remove this from the document properly");
if (HasSlots()) {
nsDOMSlots* slots = GetDOMSlots();
PtrBits flags = slots->mFlags | NODE_DOESNT_HAVE_SLOTS;
delete slots;
mFlagsOrSlots = flags;
}
nsNodeUtils::NodeWillBeDestroyed(this);
}
/**
@@ -1543,8 +1557,8 @@ nsGenericElement::GetElementsByTagName(const nsAString& aTagname,
nsCOMPtr<nsIAtom> nameAtom = do_GetAtom(aTagname);
NS_ENSURE_TRUE(nameAtom, NS_ERROR_OUT_OF_MEMORY);
nsContentList *list = NS_GetContentList(GetCurrentDoc(), nameAtom,
kNameSpaceID_Unknown, this).get();
nsContentList *list = NS_GetContentList(this, nameAtom,
kNameSpaceID_Unknown).get();
NS_ENSURE_TRUE(list, NS_ERROR_OUT_OF_MEMORY);
// transfer ref to aReturn
@@ -1674,7 +1688,7 @@ nsGenericElement::GetElementsByTagNameNS(const nsAString& aNamespaceURI,
if (nameSpaceId == kNameSpaceID_Unknown) {
// Unknown namespace means no matches, we create an empty list...
list = NS_GetContentList(document, nsnull,
kNameSpaceID_None, nsnull).get();
kNameSpaceID_None).get();
NS_ENSURE_TRUE(list, NS_ERROR_OUT_OF_MEMORY);
}
}
@@ -1683,7 +1697,7 @@ nsGenericElement::GetElementsByTagNameNS(const nsAString& aNamespaceURI,
nsCOMPtr<nsIAtom> nameAtom = do_GetAtom(aLocalName);
NS_ENSURE_TRUE(nameAtom, NS_ERROR_OUT_OF_MEMORY);
list = NS_GetContentList(document, nameAtom, nameSpaceId, this).get();
list = NS_GetContentList(this, nameAtom, nameSpaceId).get();
NS_ENSURE_TRUE(list, NS_ERROR_OUT_OF_MEMORY);
}
@@ -2396,20 +2410,17 @@ nsGenericElement::doInsertChildAt(nsIContent* aKid, PRUint32 aIndex,
// really need to stop running them while we're in the middle of modifying
// the DOM....
nsINode* container = aParent ? NS_STATIC_CAST(nsINode*, aParent) :
NS_STATIC_CAST(nsINode*, aDocument);
if (aKid->GetNodeParent() == container) {
if (aNotify && aDocument) {
// Note that we always want to call ContentInserted when things are added
// as kids to documents
if (aParent && isAppend) {
aDocument->ContentAppended(aParent, aIndex);
} else {
aDocument->ContentInserted(aParent, aKid, aIndex);
}
nsINode* container = NODE_FROM(aParent, aDocument);
if (aNotify && aKid->GetNodeParent() == container) {
// Note that we always want to call ContentInserted when things are added
// as kids to documents
if (aParent && isAppend) {
nsNodeUtils::ContentAppended(aParent, aIndex);
} else {
nsNodeUtils::ContentInserted(container, aKid, aIndex);
}
if (aNotify &&
nsContentUtils::HasMutationListeners(container,
if (nsContentUtils::HasMutationListeners(container,
NS_EVENT_BITS_MUTATION_NODEINSERTED)) {
nsMutationEvent mutation(PR_TRUE, NS_MUTATION_NODEINSERTED);
mutation.mRelatedNode = do_QueryInterface(container);
@@ -2458,10 +2469,7 @@ nsGenericElement::doRemoveChildAt(PRUint32 aIndex, PRBool aNotify,
nsMutationGuard::DidMutate();
nsINode* container = aParent;
if (!container) {
container = aDocument;
}
nsINode* container = NODE_FROM(aParent, aDocument);
NS_PRECONDITION(aKid && aKid->GetParent() == aParent &&
aKid == container->GetChildAt(aIndex) &&
@@ -2494,8 +2502,8 @@ nsGenericElement::doRemoveChildAt(PRUint32 aIndex, PRBool aNotify,
aChildArray.RemoveChildAt(aIndex);
if (aNotify && aDocument) {
aDocument->ContentRemoved(aParent, aKid, aIndex);
if (aNotify) {
nsNodeUtils::ContentRemoved(container, aKid, aIndex);
}
aKid->UnbindFromTree();
@@ -2819,10 +2827,7 @@ nsGenericElement::doReplaceOrInsertBefore(PRBool aReplace,
nsresult res = NS_OK;
PRInt32 insPos;
nsINode* container = aParent;
if (!container) {
container = aDocument;
}
nsINode* container = NODE_FROM(aParent, aDocument);
// Figure out which index to insert at
if (aRefChild) {
@@ -3060,10 +3065,7 @@ nsGenericElement::doRemoveChild(nsIDOMNode* aOldChild, nsIContent* aParent,
*aReturn = nsnull;
NS_ENSURE_TRUE(aOldChild, NS_ERROR_NULL_POINTER);
nsINode* container = aParent;
if (!container) {
container = aDocument;
}
nsINode* container = NODE_FROM(aParent, aDocument);
nsCOMPtr<nsIContent> content = do_QueryInterface(aOldChild);
// fix children to be a passed argument
@@ -3424,8 +3426,8 @@ nsGenericElement::SetAttrAndNotify(PRInt32 aNamespaceID,
nsEventDispatcher::Dispatch(this, nsnull, &mutation);
}
if (document && aNotify) {
document->AttributeChanged(this, aNamespaceID, aName, modType);
if (aNotify) {
nsNodeUtils::AttributeChanged(this, aNamespaceID, aName, modType);
}
if (aNamespaceID == kNameSpaceID_XMLEvents &&
@@ -3637,11 +3639,11 @@ nsGenericElement::UnsetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,
nsXBLBinding *binding = document->BindingManager()->GetBinding(this);
if (binding)
binding->AttributeChanged(aName, aNameSpaceID, PR_TRUE, aNotify);
}
if (aNotify) {
document->AttributeChanged(this, aNameSpaceID, aName,
nsIDOMMutationEvent::REMOVAL);
}
if (aNotify) {
nsNodeUtils::AttributeChanged(this, aNameSpaceID, aName,
nsIDOMMutationEvent::REMOVAL);
}
return NS_OK;
@@ -3785,6 +3787,12 @@ nsGenericElement::IndexOf(nsINode* aPossibleChild) const
return mAttrsAndChildren.IndexOfChild(aPossibleChild);
}
nsINode::nsSlots*
nsGenericElement::CreateSlots()
{
return new nsDOMSlots(mFlagsOrSlots);
}
void
nsGenericElement::GetContentsAsText(nsAString& aText)
{