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Mozilla/mozilla/content/base/src/nsGenericElement.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* 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 Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#include "nsGenericElement.h"
#include "nsDOMAttribute.h"
#include "nsDOMAttributeMap.h"
#include "nsIAtom.h"
#include "nsINodeInfo.h"
#include "nsIDocument.h"
#include "nsIDOMEventReceiver.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMDocument.h"
#include "nsIDOMDocumentFragment.h"
#include "nsIDOMRange.h"
#include "nsIDOMText.h"
#include "nsRange.h"
#include "nsIEventListenerManager.h"
#include "nsILinkHandler.h"
#include "nsIScriptGlobalObject.h"
#include "nsIScriptObjectOwner.h"
#include "nsISizeOfHandler.h"
#include "nsISupportsArray.h"
#include "nsIURL.h"
#include "nsNetUtil.h"
#include "nsFrame.h"
#include "nsIPresShell.h"
#include "nsIView.h"
#include "nsIViewManager.h"
#include "nsString.h"
#include "nsDOMEventsIIDs.h"
#include "nsIEventStateManager.h"
#include "nsDOMEvent.h"
#include "nsIPrivateDOMEvent.h"
#include "nsDOMCID.h"
#include "nsIServiceManager.h"
#include "nsIDOMScriptObjectFactory.h"
#include "nsIDOMCSSStyleDeclaration.h"
#include "nsDOMCSSDeclaration.h"
#include "nsINameSpaceManager.h"
#include "nsContentList.h"
#include "prprf.h"
#include "prmem.h"
#include "nsDOMError.h"
#include "nsScriptSecurityManager.h"
#include "nsIBindingManager.h"
#include "nsIXBLBinding.h"
#include "nsLayoutAtoms.h"
#include "nsHTMLAtoms.h"
#include "nsLayoutUtils.h"
#include "nsIServiceManager.h"
#include "nsIPref.h" // Used by the temp pref, should be removed!
static PRBool kStrictDOMLevel2 = PR_FALSE;
NS_DEFINE_IID(kIDOMNodeIID, NS_IDOMNODE_IID);
NS_DEFINE_IID(kIDOMElementIID, NS_IDOMELEMENT_IID);
NS_DEFINE_IID(kIDOMTextIID, NS_IDOMTEXT_IID);
NS_DEFINE_IID(kIDOMEventReceiverIID, NS_IDOMEVENTRECEIVER_IID);
NS_DEFINE_IID(kIDOMEventTargetIID, NS_IDOMEVENTTARGET_IID);
NS_DEFINE_IID(kIScriptObjectOwnerIID, NS_ISCRIPTOBJECTOWNER_IID);
NS_DEFINE_IID(kIJSScriptObjectIID, NS_IJSSCRIPTOBJECT_IID);
NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
NS_DEFINE_IID(kIContentIID, NS_ICONTENT_IID);
static NS_DEFINE_IID(kIDOMAttrIID, NS_IDOMATTR_IID);
static NS_DEFINE_IID(kIDOMNamedNodeMapIID, NS_IDOMNAMEDNODEMAP_IID);
static NS_DEFINE_IID(kIPrivateDOMEventIID, NS_IPRIVATEDOMEVENT_IID);
static NS_DEFINE_IID(kIDOMNodeListIID, NS_IDOMNODELIST_IID);
static NS_DEFINE_IID(kIDOMCSSStyleDeclarationIID, NS_IDOMCSSSTYLEDECLARATION_IID);
static NS_DEFINE_IID(kIDOMDocumentIID, NS_IDOMDOCUMENT_IID);
static NS_DEFINE_IID(kIDOMDocumentFragmentIID, NS_IDOMDOCUMENTFRAGMENT_IID);
//----------------------------------------------------------------------
nsChildContentList::nsChildContentList(nsIContent *aContent)
{
// This reference is not reference-counted. The content
// object tells us when its about to go away.
mContent = aContent;
}
nsChildContentList::~nsChildContentList()
{
}
NS_IMETHODIMP
nsChildContentList::GetLength(PRUint32* aLength)
{
if (nsnull != mContent) {
PRInt32 length;
mContent->ChildCount(length);
*aLength = (PRUint32)length;
}
else {
*aLength = 0;
}
return NS_OK;
}
NS_IMETHODIMP
nsChildContentList::Item(PRUint32 aIndex, nsIDOMNode** aReturn)
{
nsIContent *content;
nsresult res = NS_OK;
if (nsnull != mContent) {
mContent->ChildAt(aIndex, content);
if (nsnull != content) {
res = content->QueryInterface(kIDOMNodeIID, (void**)aReturn);
NS_RELEASE(content);
}
else {
*aReturn = nsnull;
}
}
else {
*aReturn = nsnull;
}
return res;
}
void
nsChildContentList::DropReference()
{
mContent = nsnull;
}
//----------------------------------------------------------------------
nsCheapVoidArray::nsCheapVoidArray()
{
mChildren = nsnull;
}
nsCheapVoidArray::~nsCheapVoidArray()
{
if (!HasSingleChild()) {
nsVoidArray* vector = GetChildVector();
if (vector) {
delete vector;
}
}
}
PRInt32
nsCheapVoidArray::Count() const
{
if (HasSingleChild()) {
return 1;
}
else {
nsVoidArray* vector = GetChildVector();
if (vector) {
return vector->Count();
}
}
return 0;
}
void*
nsCheapVoidArray::ElementAt(PRInt32 aIndex) const
{
if (HasSingleChild()) {
if (0 == aIndex) {
return (void*)GetSingleChild();
}
}
else {
nsVoidArray* vector = GetChildVector();
if (vector) {
return vector->ElementAt(aIndex);
}
}
return nsnull;
}
PRInt32
nsCheapVoidArray::IndexOf(void* aPossibleElement) const
{
if (HasSingleChild()) {
if (aPossibleElement == (void*)GetSingleChild()) {
return 0;
}
}
else {
nsVoidArray* vector = GetChildVector();
if (vector) {
return vector->IndexOf(aPossibleElement);
}
}
return -1;
}
PRBool
nsCheapVoidArray::InsertElementAt(void* aElement, PRInt32 aIndex)
{
nsVoidArray* vector;
if (HasSingleChild()) {
vector = SwitchToVector();
}
else {
vector = GetChildVector();
if (!vector) {
if (0 == aIndex) {
SetSingleChild(aElement);
return PR_TRUE;
}
else {
return PR_FALSE;
}
}
}
return vector->InsertElementAt(aElement, aIndex);
}
PRBool
nsCheapVoidArray::ReplaceElementAt(void* aElement, PRInt32 aIndex)
{
if (HasSingleChild()) {
if (aIndex == 0) {
SetSingleChild(aElement);
return PR_TRUE;
}
else {
return PR_FALSE;
}
}
else {
nsVoidArray* vector = GetChildVector();
if (vector) {
return vector->ReplaceElementAt(aElement, aIndex);
}
else {
return PR_FALSE;
}
}
}
PRBool
nsCheapVoidArray::AppendElement(void* aElement)
{
nsVoidArray* vector;
if (HasSingleChild()) {
vector = SwitchToVector();
}
else {
vector = GetChildVector();
if (!vector) {
SetSingleChild(aElement);
return PR_TRUE;
}
}
return vector->AppendElement(aElement);
}
PRBool
nsCheapVoidArray::RemoveElement(void* aElement)
{
if (HasSingleChild()) {
if (aElement == GetSingleChild()) {
SetSingleChild(nsnull);
return PR_TRUE;
}
}
else {
nsVoidArray* vector = GetChildVector();
if (vector) {
return vector->RemoveElement(aElement);
}
}
return PR_FALSE;
}
PRBool
nsCheapVoidArray::RemoveElementAt(PRInt32 aIndex)
{
if (HasSingleChild()) {
if (0 == aIndex) {
SetSingleChild(nsnull);
return PR_TRUE;
}
}
else {
nsVoidArray* vector = GetChildVector();
if (vector) {
return vector->RemoveElementAt(aIndex);
}
}
return PR_FALSE;
}
void
nsCheapVoidArray::Compact()
{
if (!HasSingleChild()) {
nsVoidArray* vector = GetChildVector();
if (vector) {
vector->Compact();
}
}
}
void
nsCheapVoidArray::SetSingleChild(void* aChild)
{
if (aChild)
mChildren = (void*)(PtrBits(aChild) | 0x1);
else
mChildren = nsnull;
}
nsVoidArray*
nsCheapVoidArray::SwitchToVector()
{
void* child = GetSingleChild();
mChildren = (void*)new nsVoidArray();
nsVoidArray* vector = GetChildVector();
if (vector && child) {
vector->AppendElement(child);
}
return vector;
}
//----------------------------------------------------------------------
// XXX Currently, the script object factory is global. The way we
// obtain it should, at least, be made thread-safe later. Ideally,
// we'd find a better way.
nsIDOMScriptObjectFactory* nsGenericElement::gScriptObjectFactory = nsnull;
static NS_DEFINE_IID(kIDOMScriptObjectFactoryIID, NS_IDOM_SCRIPT_OBJECT_FACTORY_IID);
static NS_DEFINE_IID(kDOMScriptObjectFactoryCID, NS_DOM_SCRIPT_OBJECT_FACTORY_CID);
nsresult
nsGenericElement::GetScriptObjectFactory(nsIDOMScriptObjectFactory **aResult)
{
nsresult result = NS_OK;
if (nsnull == gScriptObjectFactory) {
result = nsServiceManager::GetService(kDOMScriptObjectFactoryCID,
kIDOMScriptObjectFactoryIID,
(nsISupports **)&gScriptObjectFactory);
if (result != NS_OK) {
return result;
}
}
*aResult = gScriptObjectFactory;
NS_ADDREF(gScriptObjectFactory);
return result;
}
nsGenericElement::nsGenericElement() : mContent(nsnull), mDocument(nsnull),
mParent(nsnull), mNodeInfo(nsnull),
mDOMSlots(nsnull), mContentID(0)
{
static PRInt32 been_here = 0;
// Temporary hack that tells if some new DOM Level 2 features are on or off
if (!been_here) {
kStrictDOMLevel2 = PR_FALSE; // Default in case of failure
nsresult rv;
NS_WITH_SERVICE(nsIPref, prefs, NS_PREF_PROGID, &rv);
if (NS_SUCCEEDED(rv)) {
prefs->GetBoolPref("temp.DOMLevel2update.enabled", &kStrictDOMLevel2);
}
been_here = 1;
}
// End of temp hack.
}
nsGenericElement::~nsGenericElement()
{
// pop any enclosed ranges out
// nsRange::OwnerGone(mContent); not used for now
if (nsnull != mDOMSlots) {
if (nsnull != mDOMSlots->mChildNodes) {
mDOMSlots->mChildNodes->DropReference();
NS_RELEASE(mDOMSlots->mChildNodes);
delete mDOMSlots->mRangeList;
}
if (nsnull != mDOMSlots->mStyle) {
mDOMSlots->mStyle->DropReference();
NS_RELEASE(mDOMSlots->mStyle);
}
if (nsnull != mDOMSlots->mAttributeMap) {
mDOMSlots->mAttributeMap->DropReference();
NS_RELEASE(mDOMSlots->mAttributeMap);
}
if (nsnull != mDOMSlots->mListenerManager) {
mDOMSlots->mListenerManager->SetListenerTarget(nsnull);
NS_RELEASE(mDOMSlots->mListenerManager);
}
// XXX Should really be arena managed
PR_DELETE(mDOMSlots);
}
NS_IF_RELEASE(mNodeInfo);
}
nsDOMSlots *
nsGenericElement::GetDOMSlots()
{
if (nsnull == mDOMSlots) {
mDOMSlots = PR_NEW(nsDOMSlots);
mDOMSlots->mScriptObject = nsnull;
mDOMSlots->mChildNodes = nsnull;
mDOMSlots->mStyle = nsnull;
mDOMSlots->mAttributeMap = nsnull;
mDOMSlots->mRangeList = nsnull;
mDOMSlots->mCapturer = nsnull;
mDOMSlots->mListenerManager = nsnull;
}
return mDOMSlots;
}
void
nsGenericElement::MaybeClearDOMSlots()
{
if (mDOMSlots &&
(nsnull == mDOMSlots->mScriptObject) &&
(nsnull == mDOMSlots->mChildNodes) &&
(nsnull == mDOMSlots->mStyle) &&
(nsnull == mDOMSlots->mAttributeMap) &&
(nsnull == mDOMSlots->mRangeList) &&
(nsnull == mDOMSlots->mCapturer) &&
(nsnull == mDOMSlots->mListenerManager)) {
PR_DELETE(mDOMSlots);
}
}
void
nsGenericElement::Init(nsIContent* aOuterContentObject,
nsINodeInfo *aNodeInfo)
{
NS_ABORT_IF_FALSE(aOuterContentObject, "We need a outer content object!");
NS_ABORT_IF_FALSE(aNodeInfo, "This can't be used without node info!");
NS_ASSERTION((nsnull == mContent) && (nsnull != aOuterContentObject),
"null ptr");
mContent = aOuterContentObject;
mNodeInfo = aNodeInfo;
NS_IF_ADDREF(mNodeInfo);
}
nsresult
nsGenericElement::GetNodeValue(nsString& aNodeValue)
{
aNodeValue.Truncate();
return NS_OK;
}
nsresult
nsGenericElement::SetNodeValue(const nsString& aNodeValue)
{
// The node value can't be modified
return NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR;
}
nsresult
nsGenericElement::GetNodeType(PRUint16* aNodeType)
{
*aNodeType = (PRUint16)nsIDOMNode::ELEMENT_NODE;
return NS_OK;
}
nsresult
nsGenericElement::GetParentNode(nsIDOMNode** aParentNode)
{
nsresult res = NS_OK;
if (nsnull != mParent) {
res = mParent->QueryInterface(kIDOMNodeIID, (void**)aParentNode);
NS_ASSERTION(NS_OK == res, "Must be a DOM Node");
}
else if (nsnull == mDocument) {
*aParentNode = nsnull;
}
else {
// If we don't have a parent, but we're in the document, we must
// be the root node of the document. The DOM says that the root
// is the document.
res = mDocument->QueryInterface(kIDOMNodeIID, (void**)aParentNode);
}
return res;
}
nsresult
nsGenericElement::GetPreviousSibling(nsIDOMNode** aPrevSibling)
{
nsIContent* sibling = nsnull;
nsresult result = NS_OK;
if (nsnull != mParent) {
PRInt32 pos;
mParent->IndexOf(mContent, pos);
if (pos > -1 ) {
mParent->ChildAt(--pos, sibling);
}
}
else if (nsnull != mDocument) {
// Nodes that are just below the document (their parent is the
// document) need to go to the document to find their next sibling.
PRInt32 pos;
mDocument->IndexOf(mContent, pos);
if (pos > -1 ) {
mDocument->ChildAt(--pos, sibling);
}
}
if (nsnull != sibling) {
result = sibling->QueryInterface(kIDOMNodeIID,(void**)aPrevSibling);
NS_ASSERTION(NS_OK == result, "Must be a DOM Node");
NS_RELEASE(sibling); // balance the AddRef in ChildAt()
}
else {
*aPrevSibling = nsnull;
}
return result;
}
nsresult
nsGenericElement::GetNextSibling(nsIDOMNode** aNextSibling)
{
nsIContent* sibling = nsnull;
nsresult result = NS_OK;
if (nsnull != mParent) {
PRInt32 pos;
mParent->IndexOf(mContent, pos);
if (pos > -1 ) {
mParent->ChildAt(++pos, sibling);
}
}
else if (nsnull != mDocument) {
// Nodes that are just below the document (their parent is the
// document) need to go to the document to find their next sibling.
PRInt32 pos;
mDocument->IndexOf(mContent, pos);
if (pos > -1 ) {
mDocument->ChildAt(++pos, sibling);
}
}
if (nsnull != sibling) {
result = sibling->QueryInterface(kIDOMNodeIID,(void**)aNextSibling);
NS_ASSERTION(NS_OK == result, "Must be a DOM Node");
NS_RELEASE(sibling); // balance the AddRef in ChildAt()
}
else {
*aNextSibling = nsnull;
}
return result;
}
nsresult
nsGenericElement::GetOwnerDocument(nsIDOMDocument** aOwnerDocument)
{
// XXX Actually the owner document is the document in whose context
// the element has been created. We should be able to get at it
// whether or not we are attached to the document.
if (nsnull != mDocument) {
return mDocument->QueryInterface(kIDOMDocumentIID, (void **)aOwnerDocument);
}
else {
*aOwnerDocument = nsnull;
return NS_OK;
}
}
nsresult
nsGenericElement::GetNamespaceURI(nsString& aNamespaceURI)
{
return mNodeInfo->GetNamespaceURI(aNamespaceURI);
}
nsresult
nsGenericElement::GetPrefix(nsString& aPrefix)
{
return mNodeInfo->GetPrefix(aPrefix);
}
nsresult
nsGenericElement::SetPrefix(const nsString& aPrefix)
{
// XXX: Validate the prefix string!
nsINodeInfo *newNodeInfo = nsnull;
nsCOMPtr<nsIAtom> prefix;
if (aPrefix.Length()) {
prefix = dont_AddRef(NS_NewAtom(aPrefix));
NS_ENSURE_TRUE(prefix, NS_ERROR_OUT_OF_MEMORY);
}
nsresult rv = mNodeInfo->PrefixChanged(prefix, newNodeInfo);
NS_ENSURE_SUCCESS(rv, rv);
NS_RELEASE(mNodeInfo);
mNodeInfo = newNodeInfo;
return NS_OK;
}
nsresult
nsGenericElement::InternalSupports(const nsString& aFeature,
const nsString& aVersion,
PRBool* aReturn)
{
NS_ENSURE_ARG_POINTER(aReturn);
*aReturn = PR_FALSE;
if (aFeature.EqualsWithConversion("XML", PR_TRUE) ||
aFeature.EqualsWithConversion("HTML", PR_TRUE)) {
if (!aVersion.Length() ||
aVersion.EqualsWithConversion("1.0") ||
aVersion.EqualsWithConversion("2.0")) {
*aReturn = PR_TRUE;
}
} else if (aFeature.EqualsWithConversion("Views", PR_TRUE) ||
aFeature.EqualsWithConversion("StyleSheets", PR_TRUE) ||
aFeature.EqualsWithConversion("CSS", PR_TRUE) ||
aFeature.EqualsWithConversion("CSS2", PR_TRUE) ||
aFeature.EqualsWithConversion("Events", PR_TRUE) ||
aFeature.EqualsWithConversion("UIEvents", PR_TRUE) ||
aFeature.EqualsWithConversion("MouseEvents", PR_TRUE) ||
aFeature.EqualsWithConversion("HTMLEvents", PR_TRUE) ||
aFeature.EqualsWithConversion("Range", PR_TRUE)) {
if (!aVersion.Length() || aVersion.EqualsWithConversion("2.0")) {
*aReturn = PR_TRUE;
}
}
return NS_OK;
}
nsresult
nsGenericElement::Supports(const nsString& aFeature, const nsString& aVersion,
PRBool* aReturn)
{
return InternalSupports(aFeature, aVersion, aReturn);
}
nsresult
nsGenericElement::GetAttributes(nsIDOMNamedNodeMap** aAttributes)
{
NS_PRECONDITION(nsnull != aAttributes, "null pointer argument");
nsDOMSlots *slots = GetDOMSlots();
if (nsnull == slots->mAttributeMap) {
slots->mAttributeMap = new nsDOMAttributeMap(mContent);
if (nsnull == slots->mAttributeMap) {
return NS_ERROR_OUT_OF_MEMORY;
}
NS_ADDREF(slots->mAttributeMap);
}
return slots->mAttributeMap->QueryInterface(kIDOMNamedNodeMapIID,
(void **)aAttributes);
}
nsresult
nsGenericElement::GetTagName(nsString& aTagName)
{
aTagName.Truncate();
if (mNodeInfo) {
mNodeInfo->GetName(aTagName);
}
return NS_OK;
}
nsresult
nsGenericElement::GetAttribute(const nsString& aName, nsString& aReturn)
{
nsIAtom* nameAtom;
PRInt32 nameSpaceID;
mContent->ParseAttributeString(aName, nameAtom, nameSpaceID);
if (kNameSpaceID_Unknown == nameSpaceID) {
nameSpaceID = kNameSpaceID_None; // ignore unknown prefix XXX is this correct?
}
mContent->GetAttribute(nameSpaceID, nameAtom, aReturn);
NS_RELEASE(nameAtom);
return NS_OK;
}
nsresult
nsGenericElement::SetAttribute(const nsString& aName,
const nsString& aValue)
{
if (kStrictDOMLevel2) {
PRInt32 pos = aName.FindChar(':');
if (pos >= 0) {
nsCAutoString tmp; tmp.AssignWithConversion(aName);
printf ("Possible DOM Error: SetAttribute(\"%s\") called, use SetAttributeNS() in stead!\n", (const char *)tmp);
}
nsCOMPtr<nsIAtom> tag(dont_AddRef(NS_NewAtom(aName)));
return mContent->SetAttribute(kNameSpaceID_None, tag, aValue, PR_TRUE);
}
nsIAtom* nameAtom;
PRInt32 nameSpaceID;
nsresult result = NS_OK;
mContent->ParseAttributeString(aName, nameAtom, nameSpaceID);
if (kNameSpaceID_Unknown == nameSpaceID) {
nameSpaceID = kNameSpaceID_None; // ignore unknown prefix XXX is this correct?
}
result = mContent->SetAttribute(nameSpaceID, nameAtom, aValue, PR_TRUE);
NS_RELEASE(nameAtom);
return result;
}
nsresult
nsGenericElement::RemoveAttribute(const nsString& aName)
{
if (kStrictDOMLevel2) {
PRInt32 pos = aName.FindChar(':');
if (pos >= 0) {
nsCAutoString tmp; tmp.AssignWithConversion(aName);
printf ("Possible DOM Error: RemoveAttribute(\"%s\") called, use RemoveAttributeNS() in stead!\n", (const char *)tmp);
}
nsCOMPtr<nsIAtom> tag(dont_AddRef(NS_NewAtom(aName)));
return mContent->UnsetAttribute(kNameSpaceID_None, tag, PR_TRUE);
}
nsIAtom* nameAtom;
PRInt32 nameSpaceID;
nsresult result = NS_OK;
mContent->ParseAttributeString(aName, nameAtom, nameSpaceID);
if (kNameSpaceID_Unknown == nameSpaceID) {
nameSpaceID = kNameSpaceID_None; // ignore unknown prefix XXX is this correct?
}
result = mContent->UnsetAttribute(nameSpaceID, nameAtom, PR_TRUE);
NS_RELEASE(nameAtom);
return result;
}
nsresult
nsGenericElement::GetAttributeNode(const nsString& aName,
nsIDOMAttr** aReturn)
{
if (nsnull == aReturn) {
return NS_ERROR_NULL_POINTER;
}
nsIDOMNamedNodeMap* map;
nsresult result = GetAttributes(&map);
*aReturn = nsnull;
if (NS_OK == result) {
nsIDOMNode* node;
result = map->GetNamedItem(aName, &node);
if ((NS_OK == result) && (nsnull != node)) {
result = node->QueryInterface(kIDOMAttrIID, (void **)aReturn);
NS_IF_RELEASE(node);
}
NS_RELEASE(map);
}
return result;
}
nsresult
nsGenericElement::SetAttributeNode(nsIDOMAttr* aAttribute,
nsIDOMAttr** aReturn)
{
if ((nsnull == aReturn) || (nsnull == aAttribute)) {
return NS_ERROR_NULL_POINTER;
}
nsIDOMNamedNodeMap* map;
nsresult result = GetAttributes(&map);
*aReturn = nsnull;
if (NS_OK == result) {
nsIDOMNode *node, *returnNode;
result = aAttribute->QueryInterface(kIDOMNodeIID, (void **)&node);
if (NS_OK == result) {
result = map->SetNamedItem(node, &returnNode);
if ((NS_OK == result) && (nsnull != returnNode)) {
result = returnNode->QueryInterface(kIDOMAttrIID, (void **)aReturn);
NS_IF_RELEASE(returnNode);
}
NS_RELEASE(node);
}
NS_RELEASE(map);
}
return result;
}
nsresult
nsGenericElement::RemoveAttributeNode(nsIDOMAttr* aAttribute,
nsIDOMAttr** aReturn)
{
if ((nsnull == aReturn) || (nsnull == aAttribute)) {
return NS_ERROR_NULL_POINTER;
}
nsIDOMNamedNodeMap* map;
nsresult result = GetAttributes(&map);
*aReturn = nsnull;
if (NS_OK == result) {
nsAutoString name;
result = aAttribute->GetName(name);
if (NS_OK == result) {
nsIDOMNode* node;
result = map->RemoveNamedItem(name, &node);
if ((NS_OK == result) && (nsnull != node)) {
result = node->QueryInterface(kIDOMAttrIID, (void **)aReturn);
NS_RELEASE(node);
}
}
NS_RELEASE(map);
}
return result;
}
nsresult
nsGenericElement::GetElementsByTagName(const nsString& aTagname,
nsIDOMNodeList** aReturn)
{
nsIAtom* nameAtom;
PRInt32 nameSpaceId;
nsresult result = NS_OK;
if (kStrictDOMLevel2) {
PRInt32 pos = aTagname.FindChar(':');
if (pos >= 0) {
nsCAutoString tmp; tmp.AssignWithConversion(aTagname);
printf ("Possible DOM Error: GetElementsByTagName(\"%s\") called, use GetElementsByTagNameNS() in stead!\n", (const char *)tmp);
}
nameAtom = NS_NewAtom(aTagname);
nameSpaceId = kNameSpaceID_Unknown;
} else {
result = mContent->ParseAttributeString(aTagname, nameAtom,
nameSpaceId);
if (NS_OK != result) {
return result;
}
}
nsContentList* list = new nsContentList(mDocument,
nameAtom,
nameSpaceId,
mContent);
NS_IF_RELEASE(nameAtom);
if (nsnull == list) {
return NS_ERROR_OUT_OF_MEMORY;
}
return list->QueryInterface(kIDOMNodeListIID, (void **)aReturn);
}
nsresult
nsGenericElement::GetAttributeNS(const nsString& aNamespaceURI,
const nsString& aLocalName, nsString& aReturn)
{
nsCOMPtr<nsIAtom> name(dont_AddRef(NS_NewAtom(aLocalName)));
PRInt32 nsid;
nsCOMPtr<nsINodeInfoManager> nimgr;
mNodeInfo->GetNodeInfoManager(*getter_AddRefs(nimgr));
NS_ENSURE_TRUE(nimgr, NS_ERROR_FAILURE);
nsCOMPtr<nsINameSpaceManager> nsmgr;
nimgr->GetNamespaceManager(*getter_AddRefs(nsmgr));
NS_ENSURE_TRUE(nsmgr, NS_ERROR_FAILURE);
nsmgr->GetNameSpaceID(aNamespaceURI, nsid);
if (nsid == kNameSpaceID_Unknown) {
// Unkonwn namespace means no attr...
aReturn.Truncate();
return NS_OK;
}
mContent->GetAttribute(nsid, name, aReturn);
return NS_OK;
}
nsresult
nsGenericElement::SetAttributeNS(const nsString& aNamespaceURI,
const nsString& aQualifiedName,
const nsString& aValue)
{
nsCOMPtr<nsINodeInfoManager> nimgr;
mNodeInfo->GetNodeInfoManager(*getter_AddRefs(nimgr));
NS_ENSURE_TRUE(nimgr, NS_ERROR_FAILURE);
nsCOMPtr<nsINodeInfo> ni;
nsresult rv = nimgr->GetNodeInfo(aQualifiedName, aNamespaceURI,
*getter_AddRefs(ni));
NS_ENSURE_SUCCESS(rv, rv);
return mContent->SetAttribute(ni, aValue, PR_TRUE);
}
nsresult
nsGenericElement::RemoveAttributeNS(const nsString& aNamespaceURI,
const nsString& aLocalName)
{
nsCOMPtr<nsIAtom> name(dont_AddRef(NS_NewAtom(aLocalName)));
PRInt32 nsid;
nsCOMPtr<nsINodeInfoManager> nimgr;
mNodeInfo->GetNodeInfoManager(*getter_AddRefs(nimgr));
NS_ENSURE_TRUE(nimgr, NS_ERROR_FAILURE);
nsCOMPtr<nsINameSpaceManager> nsmgr;
nimgr->GetNamespaceManager(*getter_AddRefs(nsmgr));
NS_ENSURE_TRUE(nsmgr, NS_ERROR_FAILURE);
nsmgr->GetNameSpaceID(aNamespaceURI, nsid);
if (nsid == kNameSpaceID_Unknown) {
// Unkonwn namespace means no attr...
return NS_OK;
}
nsAutoString tmp;
mContent->UnsetAttribute(nsid, name, PR_TRUE);
return NS_OK;
}
nsresult
nsGenericElement::GetAttributeNodeNS(const nsString& aNamespaceURI,
const nsString& aLocalName,
nsIDOMAttr** aReturn)
{
NS_ENSURE_ARG_POINTER(aReturn);
nsIDOMNamedNodeMap* map;
nsresult result = GetAttributes(&map);
*aReturn = nsnull;
if (NS_OK == result) {
nsIDOMNode* node;
result = map->GetNamedItemNS(aNamespaceURI, aLocalName, &node);
if ((NS_OK == result) && (nsnull != node)) {
result = node->QueryInterface(kIDOMAttrIID, (void **)aReturn);
NS_IF_RELEASE(node);
}
NS_RELEASE(map);
}
return result;
}
nsresult
nsGenericElement::SetAttributeNodeNS(nsIDOMAttr* aNewAttr,
nsIDOMAttr** aReturn)
{
if ((nsnull == aReturn) || (nsnull == aNewAttr)) {
return NS_ERROR_NULL_POINTER;
}
nsIDOMNamedNodeMap* map;
nsresult result = GetAttributes(&map);
*aReturn = nsnull;
if (NS_OK == result) {
nsIDOMNode *node, *returnNode;
result = aNewAttr->QueryInterface(kIDOMNodeIID, (void **)&node);
if (NS_OK == result) {
result = map->SetNamedItemNS(node, &returnNode);
if ((NS_OK == result) && (nsnull != returnNode)) {
result = returnNode->QueryInterface(kIDOMAttrIID, (void **)aReturn);
NS_IF_RELEASE(returnNode);
}
NS_RELEASE(node);
}
NS_RELEASE(map);
}
return NS_OK;
}
nsresult
nsGenericElement::GetElementsByTagNameNS(const nsString& aNamespaceURI,
const nsString& aLocalName,
nsIDOMNodeList** aReturn)
{
nsCOMPtr<nsIAtom> nameAtom(dont_AddRef(NS_NewAtom(aLocalName)));
PRInt32 nameSpaceId = kNameSpaceID_Unknown;
nsContentList* list = nsnull;
if (!aNamespaceURI.EqualsWithConversion("*")) {
nsCOMPtr<nsINodeInfoManager> nimgr;
mNodeInfo->GetNodeInfoManager(*getter_AddRefs(nimgr));
NS_ENSURE_TRUE(nimgr, NS_ERROR_FAILURE);
nsCOMPtr<nsINameSpaceManager> nsmgr;
nimgr->GetNamespaceManager(*getter_AddRefs(nsmgr));
NS_ENSURE_TRUE(nsmgr, NS_ERROR_FAILURE);
nsmgr->GetNameSpaceID(aNamespaceURI, nameSpaceId);
if (nameSpaceId == kNameSpaceID_Unknown) {
// Unkonwn namespace means no matches, we create an empty list...
list = new nsContentList(mDocument, nsnull, kNameSpaceID_None);
NS_ENSURE_TRUE(list, NS_ERROR_OUT_OF_MEMORY);
}
}
if (!list) {
list = new nsContentList(mDocument, nameAtom, nameSpaceId, mContent);
NS_ENSURE_TRUE(list, NS_ERROR_OUT_OF_MEMORY);
}
return list->QueryInterface(kIDOMNodeListIID, (void **)aReturn);
}
nsresult
nsGenericElement::HasAttribute(const nsString& aName, PRBool* aReturn)
{
NS_ENSURE_ARG_POINTER(aReturn);
nsCOMPtr<nsIAtom> name;
PRInt32 nsid;
nsresult rv = mContent->ParseAttributeString(aName, *getter_AddRefs(name),
nsid);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoString tmp;
rv = mContent->GetAttribute(nsid, name, tmp);
*aReturn = rv == NS_CONTENT_ATTR_NOT_THERE ? PR_FALSE : PR_TRUE;
return NS_OK;
}
nsresult
nsGenericElement::HasAttributeNS(const nsString& aNamespaceURI,
const nsString& aLocalName, PRBool* aReturn)
{
NS_ENSURE_ARG_POINTER(aReturn);
nsCOMPtr<nsIAtom> name(dont_AddRef(NS_NewAtom(aLocalName)));
PRInt32 nsid;
nsCOMPtr<nsINodeInfoManager> nimgr;
mNodeInfo->GetNodeInfoManager(*getter_AddRefs(nimgr));
NS_ENSURE_TRUE(nimgr, NS_ERROR_FAILURE);
nsCOMPtr<nsINameSpaceManager> nsmgr;
nimgr->GetNamespaceManager(*getter_AddRefs(nsmgr));
NS_ENSURE_TRUE(nsmgr, NS_ERROR_FAILURE);
nsmgr->GetNameSpaceID(aNamespaceURI, nsid);
if (nsid == kNameSpaceID_Unknown) {
// Unkonwn namespace means no attr...
*aReturn = PR_FALSE;
return NS_OK;
}
nsAutoString tmp;
nsresult rv = mContent->GetAttribute(nsid, name, tmp);
*aReturn = rv == NS_CONTENT_ATTR_NOT_THERE ? PR_FALSE : PR_TRUE;
return NS_OK;
}
nsresult
nsGenericElement::JoinTextNodes(nsIContent* aFirst,
nsIContent* aSecond)
{
nsresult result = NS_OK;
nsIDOMText *firstText, *secondText;
result = aFirst->QueryInterface(kIDOMTextIID, (void**)&firstText);
if (NS_OK == result) {
result = aSecond->QueryInterface(kIDOMTextIID, (void**)&secondText);
if (NS_OK == result) {
nsAutoString str;
result = secondText->GetData(str);
if (NS_OK == result) {
result = firstText->AppendData(str);
}
NS_RELEASE(secondText);
}
NS_RELEASE(firstText);
}
return result;
}
nsresult
nsGenericElement::Normalize()
{
nsresult result = NS_OK;
PRInt32 index, count;
mContent->ChildCount(count);
for (index = 0; (index < count) && (NS_OK == result); index++) {
nsCOMPtr<nsIContent> child;
result = mContent->ChildAt(index, *getter_AddRefs(child));
if (NS_FAILED(result)) {
return result;
}
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(child);
if (node) {
PRUint16 nodeType;
node->GetNodeType(&nodeType);
switch (nodeType) {
case nsIDOMNode::TEXT_NODE:
if (index+1 < count) {
nsCOMPtr<nsIContent> sibling;
// Get the sibling. If it's also a text node, then
// remove it from the tree and join the two text
// nodes.
result = mContent->ChildAt(index+1, *getter_AddRefs(sibling));
if (NS_FAILED(result)) {
return result;
}
nsCOMPtr<nsIDOMNode> siblingNode = do_QueryInterface(sibling);
if (sibling) {
PRUint16 siblingNodeType;
siblingNode->GetNodeType(&siblingNodeType);
if (siblingNodeType == nsIDOMNode::TEXT_NODE) {
result = mContent->RemoveChildAt(index+1, PR_TRUE);
if (NS_FAILED(result)) {
return result;
}
result = JoinTextNodes(child, sibling);
if (NS_FAILED(result)) {
return result;
}
count--;
index--;
}
}
}
break;
case nsIDOMNode::ELEMENT_NODE:
nsCOMPtr<nsIDOMElement> element = do_QueryInterface(child);
if (element) {
result = element->Normalize();
}
break;
}
}
}
return result;
}
nsresult
nsGenericElement::GetDocument(nsIDocument*& aResult) const
{
NS_IF_ADDREF(mDocument);
aResult = mDocument;
return NS_OK;
}
void
nsGenericElement::SetDocumentInChildrenOf(nsIContent* aContent,
nsIDocument* aDocument,
PRBool aCompileEventHandlers)
{
PRInt32 i, n;
aContent->ChildCount(n);
for (i = 0; i < n; i++) {
nsIContent* child;
aContent->ChildAt(i, child);
if (nsnull != child) {
child->SetDocument(aDocument, PR_TRUE, aCompileEventHandlers);
NS_RELEASE(child);
}
}
}
nsresult
nsGenericElement::SetDocument(nsIDocument* aDocument, PRBool aDeep, PRBool aCompileEventHandlers)
{
if (aDocument != mDocument) {
// If we were part of a document, make sure we get rid of the
// script context reference to our script object so that our
// script object can be freed (or collected).
if ((nsnull != mDocument) && (nsnull != mDOMSlots) &&
(nsnull != mDOMSlots->mScriptObject)) {
nsCOMPtr<nsIScriptGlobalObject> globalObject;
mDocument->GetScriptGlobalObject(getter_AddRefs(globalObject));
if (globalObject) {
nsCOMPtr<nsIScriptContext> context;
if (NS_OK == globalObject->GetContext(getter_AddRefs(context)) && context) {
context->RemoveReference((void *)&mDOMSlots->mScriptObject,
mDOMSlots->mScriptObject);
}
}
}
if (mDocument) {
nsCOMPtr<nsIBindingManager> bindingManager;
mDocument->GetBindingManager(getter_AddRefs(bindingManager));
nsCOMPtr<nsIXBLBinding> binding;
bindingManager->GetBinding(mContent, getter_AddRefs(binding));
if (binding) {
binding->ChangeDocument(mDocument, aDocument);
bindingManager->SetBinding(mContent, nsnull);
if (aDocument) {
nsCOMPtr<nsIBindingManager> otherManager;
aDocument->GetBindingManager(getter_AddRefs(otherManager));
otherManager->SetBinding(mContent, binding);
}
}
}
mDocument = aDocument;
// If we already have a script object and now we're being added
// to a document, make sure that the script context adds a
// reference to our script object. This will ensure that it
// won't be freed (or collected) out from under us.
if ((nsnull != mDocument) && (nsnull != mDOMSlots) &&
(nsnull != mDOMSlots->mScriptObject)) {
nsCOMPtr<nsIScriptGlobalObject> globalObject;
mDocument->GetScriptGlobalObject(getter_AddRefs(globalObject));
if (globalObject) {
nsCOMPtr<nsIScriptContext> context;
if (NS_OK == globalObject->GetContext(getter_AddRefs(context)) && context) {
context->AddNamedReference((void *)&mDOMSlots->mScriptObject,
mDOMSlots->mScriptObject,
"nsGenericElement::mScriptObject");
}
}
}
}
if (PR_TRUE == aDeep) {
SetDocumentInChildrenOf(mContent, aDocument, aCompileEventHandlers);
}
return NS_OK;
}
nsresult
nsGenericElement::GetParent(nsIContent*& aResult) const
{
NS_IF_ADDREF(mParent);
aResult = mParent;
return NS_OK;
}
nsresult
nsGenericElement::SetParent(nsIContent* aParent)
{
mParent = aParent;
return NS_OK;
}
nsresult
nsGenericElement::GetNameSpaceID(PRInt32& aResult) const
{
aResult = kNameSpaceID_None;
return NS_OK;
}
nsresult
nsGenericElement::GetTag(nsIAtom*& aResult) const
{
return mNodeInfo->GetNameAtom(aResult);
}
nsresult
nsGenericElement::GetNodeInfo(nsINodeInfo*& aResult) const
{
aResult = mNodeInfo;
NS_IF_ADDREF(aResult);
return NS_OK;
}
nsresult
nsGenericElement::HandleDOMEvent(nsIPresContext* aPresContext,
nsEvent* aEvent,
nsIDOMEvent** aDOMEvent,
PRUint32 aFlags,
nsEventStatus* aEventStatus)
{
nsresult ret = NS_OK;
nsIDOMEvent* domEvent = nsnull;
if (NS_EVENT_FLAG_INIT & aFlags) {
if (!aDOMEvent) {
aDOMEvent = &domEvent;
}
aEvent->flags = aFlags;
aFlags &= ~(NS_EVENT_FLAG_CANT_BUBBLE | NS_EVENT_FLAG_CANT_CANCEL);
}
//Capturing stage evaluation
//Always pass capturing up the tree before local evaulation
if (NS_EVENT_FLAG_BUBBLE != aFlags) {
// XXX: Bring on the more optimized version of capturing at some point
//if (nsnull != mDOMSlots && nsnull != mDOMSlots->mCapturer) {
//mDOMSlots->mCapturer->HandleDOMEvent(aPresContext, aEvent, aDOMEvent, NS_EVENT_FLAG_CAPTURE, aEventStatus);
//} else {
// Node capturing stage
if (mParent) {
// Pass off to our parent.
mParent->HandleDOMEvent(aPresContext, aEvent, aDOMEvent, NS_EVENT_FLAG_CAPTURE, aEventStatus);
} else {
//Initiate capturing phase. Special case first call to document
if (nsnull != mDocument) {
mDocument->HandleDOMEvent(aPresContext, aEvent, aDOMEvent, NS_EVENT_FLAG_CAPTURE, aEventStatus);
}
}
//}
}
//Local handling stage
if (mDOMSlots && mDOMSlots->mListenerManager && !(aEvent->flags & NS_EVENT_FLAG_STOP_DISPATCH) &&
!(NS_EVENT_FLAG_BUBBLE & aFlags && NS_EVENT_FLAG_CANT_BUBBLE & aEvent->flags)) {
aEvent->flags |= aFlags;
nsCOMPtr<nsIDOMEventTarget> curTarg(do_QueryInterface(mContent));
mDOMSlots->mListenerManager->HandleEvent(aPresContext, aEvent, aDOMEvent, curTarg, aFlags, aEventStatus);
aEvent->flags &= ~aFlags;
}
//Bubbling stage
if (NS_EVENT_FLAG_CAPTURE != aFlags && mDocument) {
if (mParent) {
/*
* If there's a parent we pass the event to the parent...
*/
ret = mParent->HandleDOMEvent(aPresContext, aEvent, aDOMEvent,
NS_EVENT_FLAG_BUBBLE, aEventStatus);
} else {
/*
* If there's no parent but there is a document (i.e. this is the
* root node) we pass the event to the document...
*/
ret = mDocument->HandleDOMEvent(aPresContext, aEvent, aDOMEvent,
NS_EVENT_FLAG_BUBBLE, aEventStatus);
}
}
if (NS_EVENT_FLAG_INIT & aFlags) {
// We're leaving the DOM event loop so if we created a DOM event,
// release here.
if (nsnull != *aDOMEvent) {
nsrefcnt rc;
NS_RELEASE2(*aDOMEvent, rc);
if (0 != rc) {
// Okay, so someone in the DOM loop (a listener, JS object)
// still has a ref to the DOM Event but the internal data
// hasn't been malloc'd. Force a copy of the data here so the
// DOM Event is still valid.
nsIPrivateDOMEvent *privateEvent;
if (NS_OK == (*aDOMEvent)->QueryInterface(kIPrivateDOMEventIID, (void**)&privateEvent)) {
privateEvent->DuplicatePrivateData();
NS_RELEASE(privateEvent);
}
}
}
aDOMEvent = nsnull;
}
return ret;
}
nsresult
nsGenericElement::RangeAdd(nsIDOMRange& aRange)
{
if (nsnull == mDOMSlots) GetDOMSlots();
// lazy allocation of range list
if (nsnull == mDOMSlots->mRangeList) {
mDOMSlots->mRangeList = new nsVoidArray();
}
if (nsnull == mDOMSlots->mRangeList) {
return NS_ERROR_OUT_OF_MEMORY;
}
// Make sure we don't add a range that is already
// in the list!
PRInt32 i = mDOMSlots->mRangeList->IndexOf(&aRange);
if (i >= 0) {
// Range is already in the list, so there
// is nothing to do!
return NS_OK;
}
// dont need to addref - this call is made by the range object itself
PRBool rv = mDOMSlots->mRangeList->AppendElement(&aRange);
if (rv) return NS_OK;
return NS_ERROR_FAILURE;
}
nsresult
nsGenericElement::RangeRemove(nsIDOMRange& aRange)
{
if (mDOMSlots && mDOMSlots->mRangeList) {
// dont need to release - this call is made by the range object itself
PRBool rv = mDOMSlots->mRangeList->RemoveElement(&aRange);
if (rv) {
if (mDOMSlots->mRangeList->Count() == 0) {
delete mDOMSlots->mRangeList;
mDOMSlots->mRangeList = nsnull;
MaybeClearDOMSlots();
}
return NS_OK;
}
}
return NS_ERROR_FAILURE;
}
nsresult
nsGenericElement::GetRangeList(nsVoidArray*& aResult) const
{
if (mDOMSlots && mDOMSlots->mRangeList) {
aResult = mDOMSlots->mRangeList;
}
else {
aResult = nsnull;
}
return NS_OK;
}
nsresult
nsGenericElement::SetFocus(nsIPresContext* aPresContext)
{
return NS_OK;
}
nsresult
nsGenericElement::RemoveFocus(nsIPresContext* aPresContext)
{
return NS_OK;
}
nsresult
nsGenericElement::SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult,
size_t aInstanceSize) const
{
if (!aResult) {
return NS_ERROR_NULL_POINTER;
}
#ifdef DEBUG
*aResult = (PRUint32) aInstanceSize;
#else
*aResult = 0;
#endif
return NS_OK;
}
//----------------------------------------------------------------------
nsresult
nsGenericElement::RenderFrame(nsIPresContext* aPresContext)
{
nsPoint offset;
nsRect bounds;
// Trigger damage repairs for each frame that maps the given content
PRInt32 i, n;
n = mDocument->GetNumberOfShells();
for (i = 0; i < n; i++) {
nsIPresShell* shell;
shell = mDocument->GetShellAt(i);
nsIFrame* frame;
shell->GetPrimaryFrameFor(mContent, &frame);
while (nsnull != frame) {
nsIViewManager* vm;
nsIView* view;
// Determine damaged area and tell view manager to redraw it
frame->GetRect(bounds);
bounds.x = bounds.y = 0;
// XXX We should tell the frame the damage area and let it invalidate
// itself. Add some API calls to nsIFrame to allow a caller to invalidate
// parts of the frame...
frame->GetOffsetFromView(aPresContext, offset, &view);
view->GetViewManager(vm);
bounds.x += offset.x;
bounds.y += offset.y;
vm->UpdateView(view, bounds, NS_VMREFRESH_IMMEDIATE);
NS_RELEASE(vm);
// If frame has a next-in-flow, repaint it too
frame->GetNextInFlow(&frame);
}
NS_RELEASE(shell);
}
return NS_OK;
}
//----------------------------------------------------------------------
// nsIScriptObjectOwner implementation
nsresult
nsGenericElement::GetScriptObject(nsIScriptContext* aContext,
void** aScriptObject)
{
nsresult res = NS_OK;
nsDOMSlots *slots = GetDOMSlots();
if (nsnull == slots->mScriptObject) {
nsIDOMScriptObjectFactory *factory;
res = GetScriptObjectFactory(&factory);
if (NS_OK != res) {
return res;
}
nsAutoString tag;
mNodeInfo->GetName(tag);
res = factory->NewScriptElement(tag, aContext, mContent,
mParent ? (nsISupports*)mParent : (nsISupports*)mDocument,
(void**)&slots->mScriptObject);
NS_RELEASE(factory);
if (nsnull != mDocument) {
aContext->AddNamedReference((void *)&slots->mScriptObject,
slots->mScriptObject,
"nsGenericElement::mScriptObject");
}
}
void* object = nsnull;
if (mDocument) {
nsCOMPtr<nsIBindingManager> bindingManager;
mDocument->GetBindingManager(getter_AddRefs(bindingManager));
nsCOMPtr<nsIXBLBinding> binding;
bindingManager->GetBinding(mContent, getter_AddRefs(binding));
if (binding) {
nsCOMPtr<nsIScriptObjectOwner> owner(do_QueryInterface(binding));
owner->GetScriptObject(aContext, &object);
}
}
*aScriptObject = object ? object : slots->mScriptObject;
return res;
}
nsresult
nsGenericElement::SetScriptObject(void *aScriptObject)
{
nsDOMSlots *slots = GetDOMSlots();
slots->mScriptObject = aScriptObject;
if (!aScriptObject) {
if (slots->mListenerManager) {
slots->mListenerManager->RemoveAllListeners(PR_TRUE);
}
MaybeClearDOMSlots();
}
return NS_OK;
}
//----------------------------------------------------------------------
nsresult
nsGenericElement::GetListenerManager(nsIEventListenerManager** aResult)
{
nsDOMSlots *slots = GetDOMSlots();
if (nsnull != slots->mListenerManager) {
NS_ADDREF(slots->mListenerManager);
*aResult = slots->mListenerManager;
return NS_OK;
}
nsresult rv = NS_NewEventListenerManager(aResult);
if (NS_OK == rv) {
slots->mListenerManager = *aResult;
NS_ADDREF(slots->mListenerManager);
slots->mListenerManager->SetListenerTarget(mContent);
}
return rv;
}
//----------------------------------------------------------------------
// nsIJSScriptObject implementation
PRBool
nsGenericElement::AddProperty(JSContext *aContext, JSObject *aObj, jsval aID, jsval *aVp)
{
return PR_TRUE;
}
PRBool
nsGenericElement::DeleteProperty(JSContext *aContext, JSObject *aObj, jsval aID, jsval *aVp)
{
return PR_TRUE;
}
PRBool
nsGenericElement::GetProperty(JSContext *aContext, JSObject *aObj, jsval aID, jsval *aVp)
{
return PR_TRUE;
}
PRBool
nsGenericElement::SetProperty(JSContext *aContext, JSObject *aObj, jsval aID, jsval *aVp)
{
nsIScriptObjectOwner *owner;
if (NS_OK != mContent->QueryInterface(kIScriptObjectOwnerIID, (void **)&owner)) {
return PR_FALSE;
}
if (JS_TypeOfValue(aContext, *aVp) == JSTYPE_FUNCTION && JSVAL_IS_STRING(aID)) {
nsAutoString propName, prefix;
propName.Assign(JS_GetStringChars(JS_ValueToString(aContext, aID)));
if (propName.Length() > 2)
prefix.Assign(propName.GetUnicode(), 2);
if (prefix.EqualsWithConversion("on")) {
nsCOMPtr<nsIAtom> atom = getter_AddRefs(NS_NewAtom(propName));
nsIEventListenerManager *manager = nsnull;
if (atom.get() == nsLayoutAtoms::onmousedown || atom.get() == nsLayoutAtoms::onmouseup || atom.get() == nsLayoutAtoms::onclick ||
atom.get() == nsLayoutAtoms::onmouseover || atom.get() == nsLayoutAtoms::onmouseout) {
if (NS_OK == GetListenerManager(&manager)) {
nsCOMPtr<nsIScriptContext> mScriptCX;
if (NS_FAILED(nsLayoutUtils::GetStaticScriptContext(aContext, (JSObject*)GetDOMSlots()->mScriptObject, getter_AddRefs(mScriptCX))) ||
NS_OK != manager->RegisterScriptEventListener(mScriptCX, owner, atom, kIDOMMouseListenerIID)) {
NS_RELEASE(manager);
return PR_FALSE;
}
}
}
else if (atom.get() == nsLayoutAtoms::onkeydown || atom.get() == nsLayoutAtoms::onkeyup || atom.get() == nsLayoutAtoms::onkeypress) {
if (NS_OK == GetListenerManager(&manager)) {
nsCOMPtr<nsIScriptContext> mScriptCX;
if (NS_FAILED(nsLayoutUtils::GetStaticScriptContext(aContext, (JSObject*)GetDOMSlots()->mScriptObject, getter_AddRefs(mScriptCX))) ||
NS_OK != manager->RegisterScriptEventListener(mScriptCX, owner, atom, kIDOMKeyListenerIID)) {
NS_RELEASE(manager);
return PR_FALSE;
}
}
}
else if (atom.get() == nsLayoutAtoms::onmousemove) {
if (NS_OK == GetListenerManager(&manager)) {
nsCOMPtr<nsIScriptContext> mScriptCX;
if (NS_FAILED(nsLayoutUtils::GetStaticScriptContext(aContext, (JSObject*)GetDOMSlots()->mScriptObject, getter_AddRefs(mScriptCX))) ||
NS_OK != manager->RegisterScriptEventListener(mScriptCX, owner, atom, kIDOMMouseMotionListenerIID)) {
NS_RELEASE(manager);
return PR_FALSE;
}
}
}
else if (atom.get() == nsLayoutAtoms::onfocus || atom.get() == nsLayoutAtoms::onblur) {
if (NS_OK == GetListenerManager(&manager)) {
nsCOMPtr<nsIScriptContext> mScriptCX;
if (NS_FAILED(nsLayoutUtils::GetStaticScriptContext(aContext, (JSObject*)GetDOMSlots()->mScriptObject, getter_AddRefs(mScriptCX))) ||
NS_OK != manager->RegisterScriptEventListener(mScriptCX, owner, atom, kIDOMFocusListenerIID)) {
NS_RELEASE(manager);
return PR_FALSE;
}
}
}
else if (atom.get() == nsLayoutAtoms::onsubmit || atom.get() == nsLayoutAtoms::onreset || atom.get() == nsLayoutAtoms::onchange ||
atom.get() == nsLayoutAtoms::onselect) {
if (NS_OK == GetListenerManager(&manager)) {
nsCOMPtr<nsIScriptContext> mScriptCX;
if (NS_FAILED(nsLayoutUtils::GetStaticScriptContext(aContext, (JSObject*)GetDOMSlots()->mScriptObject, getter_AddRefs(mScriptCX))) ||
NS_OK != manager->RegisterScriptEventListener(mScriptCX, owner, atom, kIDOMFormListenerIID)) {
NS_RELEASE(manager);
return PR_FALSE;
}
}
}
else if (atom.get() == nsLayoutAtoms::onload || atom.get() == nsLayoutAtoms::onunload || atom.get() == nsLayoutAtoms::onabort ||
atom.get() == nsLayoutAtoms::onerror) {
if (NS_OK == GetListenerManager(&manager)) {
nsCOMPtr<nsIScriptContext> mScriptCX;
if (NS_FAILED(nsLayoutUtils::GetStaticScriptContext(aContext, (JSObject*)GetDOMSlots()->mScriptObject, getter_AddRefs(mScriptCX))) ||
NS_OK != manager->RegisterScriptEventListener(mScriptCX, owner, atom, kIDOMLoadListenerIID)) {
NS_RELEASE(manager);
return PR_FALSE;
}
}
}
else if (atom.get() == nsLayoutAtoms::onpaint || atom.get() == nsLayoutAtoms::onresize ||
atom.get() == nsLayoutAtoms::onscroll) {
if (NS_OK == GetListenerManager(&manager)) {
nsCOMPtr<nsIScriptContext> mScriptCX;
if (NS_FAILED(nsLayoutUtils::GetStaticScriptContext(aContext, (JSObject*)GetDOMSlots()->mScriptObject, getter_AddRefs(mScriptCX))) ||
NS_OK != manager->RegisterScriptEventListener(mScriptCX, owner,
atom, kIDOMPaintListenerIID)) {
NS_RELEASE(manager);
return PR_FALSE;
}
}
}
NS_IF_RELEASE(manager);
}
}
NS_IF_RELEASE(owner);
return PR_TRUE;
}
PRBool
nsGenericElement::EnumerateProperty(JSContext *aContext, JSObject *aObj)
{
return PR_TRUE;
}
PRBool
nsGenericElement::Resolve(JSContext *aContext, JSObject *aObj, jsval aID)
{
return PR_TRUE;
}
PRBool
nsGenericElement::Convert(JSContext *aContext, JSObject *aObj, jsval aID)
{
return PR_TRUE;
}
void
nsGenericElement::Finalize(JSContext *aContext, JSObject *aObj)
{
}
// Generic DOMNode implementations
/*
* This helper function checks if aChild is the same as aNode or if
* aChild is one of aNode's ancestors. -- jst@citec.fi
*/
static PRBool isSelfOrAncestor(nsIContent *aNode, nsIContent *aChild)
{
if (aNode == aChild)
return PR_TRUE;
nsCOMPtr<nsIContent> parent, tmpNode;
PRInt32 childCount = 0;
/*
* If aChild doesn't have children it can't be our ancestor
*/
aChild->ChildCount(childCount);
if (childCount <= 0) {
return PR_FALSE;
}
aNode->GetParent(*getter_AddRefs(parent));
while (parent) {
if (parent.get() == aChild) {
/*
* We found aChild as one of our ancestors
*/
return PR_TRUE;
}
parent->GetParent(*getter_AddRefs(tmpNode));
parent = tmpNode;
}
return PR_FALSE;
}
nsresult
nsGenericElement::doInsertBefore(nsIDOMNode* aNewChild,
nsIDOMNode* aRefChild,
nsIDOMNode** aReturn)
{
if (!aReturn) {
return NS_ERROR_NULL_POINTER;
}
*aReturn = nsnull;
if (!aNewChild) {
return NS_ERROR_NULL_POINTER;
}
nsCOMPtr<nsIContent> refContent;
nsresult res = NS_OK;
PRInt32 refPos = 0;
if (aRefChild) {
refContent = do_QueryInterface(aRefChild, &res);
if (NS_FAILED(res)) {
/*
* If aRefChild doesn't support the nsIContent interface it can't be
* an existing child of this node.
*/
return NS_ERROR_DOM_NOT_FOUND_ERR;
}
mContent->IndexOf(refContent, refPos);
if (refPos < 0) {
return NS_ERROR_DOM_NOT_FOUND_ERR;
}
} else {
mContent->ChildCount(refPos);
}
PRUint16 nodeType = 0;
res = aNewChild->GetNodeType(&nodeType);
if (NS_FAILED(res)) {
return res;
}
switch (nodeType) {
case nsIDOMNode::ELEMENT_NODE :
case nsIDOMNode::TEXT_NODE :
case nsIDOMNode::CDATA_SECTION_NODE :
case nsIDOMNode::ENTITY_REFERENCE_NODE :
case nsIDOMNode::PROCESSING_INSTRUCTION_NODE :
case nsIDOMNode::COMMENT_NODE :
break;
case nsIDOMNode::DOCUMENT_FRAGMENT_NODE :
break;
default:
/*
* aNewChild is of invalid type.
*/
return NS_ERROR_DOM_HIERARCHY_REQUEST_ERR;
}
nsCOMPtr<nsIContent> newContent(do_QueryInterface(aNewChild, &res));
if (NS_FAILED(res)) {
return NS_ERROR_DOM_HIERARCHY_REQUEST_ERR;
}
/*
* Make sure the new child is not "this" node or one of this nodes
* ancestors. Doing this check here should be safe even if newContent
* is a document fragment.
*/
if (isSelfOrAncestor(mContent, newContent)) {
return NS_ERROR_DOM_HIERARCHY_REQUEST_ERR;
}
/*
* Check if this is a document fragment. If it is, we need
* to remove the children of the document fragment and add them
* individually (i.e. we don't add the actual document fragment).
*/
if (nodeType == nsIDOMNode::DOCUMENT_FRAGMENT_NODE) {
nsCOMPtr<nsIContent> childContent;
PRInt32 count, i;
newContent->ChildCount(count);
/*
* Iterate through the fragments children, removing each from
* the fragment and inserting it into the child list of its
* new parent.
*/
for (i = 0; i < count; i++) {
// Always get and remove the first child, since the child indexes
// change as we go along.
res = newContent->ChildAt(0, *getter_AddRefs(childContent));
if (NS_FAILED(res)) {
return res;
}
res = newContent->RemoveChildAt(0, PR_FALSE);
if (NS_FAILED(res)) {
return res;
}
childContent->SetDocument(mDocument, PR_TRUE, PR_TRUE);
// Insert the child and increment the insertion position
res = mContent->InsertChildAt(childContent, refPos++, PR_TRUE);
if (NS_FAILED(res)) {
return res;
}
}
} else {
nsCOMPtr<nsIDOMNode> oldParent;
res = aNewChild->GetParentNode(getter_AddRefs(oldParent));
if (NS_FAILED(res)) {
return res;
}
/*
* Remove the element from the old parent if one exists, since oldParent
* is a nsIDOMNode this will do the right thing even if the parent of
* aNewChild is a document. This code also handles the case where the
* new child is alleady a child of this node-- jst@citec.fi
*/
if (oldParent) {
nsCOMPtr<nsIDOMNode> tmpNode;
PRInt32 origChildCount, newChildCount;
mContent->ChildCount(origChildCount);
/*
* We don't care here if the return fails or not.
*/
oldParent->RemoveChild(aNewChild, getter_AddRefs(tmpNode));
mContent->ChildCount(newChildCount);
/*
* Check if our child count changed during the RemoveChild call, if
* it did then oldParent is most likely this node. In this case we
* must check if refPos is still correct (unless it's zero).
*/
if (refPos && origChildCount != newChildCount) {
if (refContent) {
/*
* If we did get aRefChild we check if that is now at refPos - 1,
* this will happend if the new child was one of aRefChilds'
* previous siblings.
*/
nsCOMPtr<nsIContent> tmpContent;
mContent->ChildAt(refPos - 1, *getter_AddRefs(tmpContent));
if (refContent == tmpContent) {
refPos--;
}
} else {
/*
* If we didn't get aRefChild we simply decrement refPos.
*/
refPos--;
}
}
}
newContent->SetDocument(mDocument, PR_TRUE, PR_TRUE);
res = mContent->InsertChildAt(newContent, refPos, PR_TRUE);
if (NS_FAILED(res)) {
return res;
}
}
*aReturn = aNewChild;
NS_ADDREF(*aReturn);
return res;
}
nsresult
nsGenericElement::doReplaceChild(nsIDOMNode* aNewChild,
nsIDOMNode* aOldChild,
nsIDOMNode** aReturn)
{
if (!aReturn) {
return NS_ERROR_NULL_POINTER;
}
*aReturn = nsnull;
if (!aNewChild || !aOldChild) {
return NS_ERROR_NULL_POINTER;
}
nsresult res = NS_OK;
PRInt32 oldPos = 0;
nsCOMPtr<nsIContent> oldContent(do_QueryInterface(aOldChild, &res));
if (NS_FAILED(res)) {
/*
* If aOldChild doesn't support the nsIContent interface it can't be
* an existing child of this node.
*/
return NS_ERROR_DOM_NOT_FOUND_ERR;
}
mContent->IndexOf(oldContent, oldPos);
if (oldPos < 0) {
return NS_ERROR_DOM_NOT_FOUND_ERR;
}
nsCOMPtr<nsIContent> replacedChild;
mContent->ChildAt(oldPos, *getter_AddRefs(replacedChild));
PRUint16 nodeType = 0;
res = aNewChild->GetNodeType(&nodeType);
if (NS_FAILED(res)) {
return res;
}
switch (nodeType) {
case nsIDOMNode::ELEMENT_NODE :
case nsIDOMNode::TEXT_NODE :
case nsIDOMNode::CDATA_SECTION_NODE :
case nsIDOMNode::ENTITY_REFERENCE_NODE :
case nsIDOMNode::PROCESSING_INSTRUCTION_NODE :
case nsIDOMNode::COMMENT_NODE :
case nsIDOMNode::DOCUMENT_FRAGMENT_NODE :
break;
default:
/*
* aNewChild is of invalid type.
*/
return NS_ERROR_DOM_HIERARCHY_REQUEST_ERR;
}
nsCOMPtr<nsIContent> newContent(do_QueryInterface(aNewChild, &res));
if (NS_FAILED(res)) {
return NS_ERROR_DOM_HIERARCHY_REQUEST_ERR;
}
nsCOMPtr<nsIDocument> document;
mContent->GetDocument(*getter_AddRefs(document));
/*
* Make sure the new child is not "this" node or one of this nodes
* ancestors. Doing this check here should be safe even if newContent
* is a document fragment.
*/
if (isSelfOrAncestor(mContent, newContent)) {
return NS_ERROR_DOM_HIERARCHY_REQUEST_ERR;
}
/*
* Check if this is a document fragment. If it is, we need
* to remove the children of the document fragment and add them
* individually (i.e. we don't add the actual document fragment).
*/
if (nodeType == nsIDOMNode::DOCUMENT_FRAGMENT_NODE) {
nsCOMPtr<nsIContent> childContent;
PRInt32 count, i;
newContent->ChildCount(count);
/*
* Iterate through the fragments children, removing each from
* the fragment and inserting it into the child list of its
* new parent.
*/
for (i =0; i < count; i++) {
// Always get and remove the first child, since the child indexes
// change as we go along.
res = newContent->ChildAt(0, *getter_AddRefs(childContent));
if (NS_FAILED(res)) {
return res;
}
res = newContent->RemoveChildAt(0, PR_FALSE);
if (NS_FAILED(res)) {
return res;
}
childContent->SetDocument(document, PR_TRUE, PR_TRUE);
// Insert the child and increment the insertion position
if (i) {
res = mContent->InsertChildAt(childContent, oldPos++, PR_TRUE);
} else {
res = mContent->ReplaceChildAt(childContent, oldPos++, PR_TRUE);
}
if (NS_FAILED(res)) {
return res;
}
}
} else {
nsCOMPtr<nsIDOMNode> oldParent;
res = aNewChild->GetParentNode(getter_AddRefs(oldParent));
if (NS_FAILED(res)) {
return res;
}
/*
* Remove the element from the old parent if one exists, since oldParent
* is a nsIDOMNode this will do the right thing even if the parent of
* aNewChild is a document. This code also handles the case where the
* new child is alleady a child of this node-- jst@citec.fi
*/
if (oldParent) {
nsCOMPtr<nsIDOMNode> tmpNode;
PRInt32 origChildCount, newChildCount;
mContent->ChildCount(origChildCount);
/*
* We don't care here if the return fails or not.
*/
oldParent->RemoveChild(aNewChild, getter_AddRefs(tmpNode));
mContent->ChildCount(newChildCount);
/*
* Check if our child count changed during the RemoveChild call, if
* it did then oldParent is most likely this node. In this case we
* must check if oldPos is still correct (unless it's zero).
*/
if (oldPos && origChildCount != newChildCount) {
/*
* Check if aOldChild is now at oldPos - 1, this will happend if
* the new child was one of aOldChilds' previous siblings.
*/
nsCOMPtr<nsIContent> tmpContent;
mContent->ChildAt(oldPos - 1, *getter_AddRefs(tmpContent));
if (oldContent == tmpContent) {
oldPos--;
}
}
}
newContent->SetDocument(document, PR_TRUE, PR_TRUE);
res = mContent->ReplaceChildAt(newContent, oldPos, PR_TRUE);
if (NS_FAILED(res)) {
return res;
}
}
return replacedChild->QueryInterface(NS_GET_IID(nsIDOMNode),
(void **)aReturn);
}
nsresult
nsGenericElement::doRemoveChild(nsIDOMNode* aOldChild,
nsIDOMNode** aReturn)
{
*aReturn = nsnull;
if (!aOldChild) {
return NS_ERROR_NULL_POINTER;
}
nsresult res;
nsCOMPtr<nsIContent> content(do_QueryInterface(aOldChild, &res));
if (NS_FAILED(res)) {
/*
* If we're asked to remove something that doesn't support nsIContent
* it can not be one of our children, i.e. we return NOT_FOUND_ERR.
*/
return NS_ERROR_DOM_NOT_FOUND_ERR;
}
PRInt32 pos;
mContent->IndexOf(content, pos);
if (pos < 0) {
/*
* aOldChild isn't one of our children.
*/
return NS_ERROR_DOM_NOT_FOUND_ERR;
}
res = mContent->RemoveChildAt(pos, PR_TRUE);
*aReturn = aOldChild;
NS_ADDREF(aOldChild);
return res;
}
//----------------------------------------------------------------------
// nsISupports implementation
nsresult
nsGenericElement::QueryInterface(REFNSIID aIID,void** aInstancePtr)
{
return mContent->QueryInterface(aIID, aInstancePtr);
}
nsrefcnt
nsGenericElement::AddRef()
{
return NS_ADDREF(mContent);
}
nsrefcnt
nsGenericElement::Release()
{
nsrefcnt rc=0;
NS_ASSERTION(mContent, "nsGenericElement: Nothing to release!");
if (mContent)
NS_RELEASE2(mContent, rc);
return rc;
}
//----------------------------------------------------------------------
nsresult
nsGenericElement::TriggerLink(nsIPresContext* aPresContext,
nsLinkVerb aVerb,
nsIURI* aBaseURL,
const nsString& aURLSpec,
const nsString& aTargetSpec,
PRBool aClick)
{
nsCOMPtr<nsILinkHandler> handler;
nsresult rv = aPresContext->GetLinkHandler(getter_AddRefs(handler));
if (NS_FAILED(rv) || (nsnull == handler)) return rv;
// Resolve url to an absolute url
nsAutoString absURLSpec;
if (nsnull != aBaseURL) {
rv = NS_MakeAbsoluteURI(absURLSpec, aURLSpec, aBaseURL);
if (NS_FAILED(rv)) return rv;
}
else {
absURLSpec.Assign(aURLSpec);
}
// Now pass on absolute url to the click handler
if (aClick) {
nsresult proceed = NS_OK;
// Check that this page is allowed to load this URI.
NS_WITH_SERVICE(nsIScriptSecurityManager, securityManager,
NS_SCRIPTSECURITYMANAGER_PROGID, &rv);
nsCOMPtr<nsIURI> absURI;
if (NS_SUCCEEDED(rv))
rv = NS_NewURI(getter_AddRefs(absURI), absURLSpec, aBaseURL);
if (NS_SUCCEEDED(rv))
proceed = securityManager->CheckLoadURI(aBaseURL, absURI, PR_FALSE);
// Only pass off the click event if the script security manager
// says it's ok.
if (NS_SUCCEEDED(proceed))
handler->OnLinkClick(mContent, aVerb, absURLSpec.GetUnicode(), aTargetSpec.GetUnicode());
}
else {
handler->OnOverLink(mContent, absURLSpec.GetUnicode(), aTargetSpec.GetUnicode());
}
return rv;
}
nsresult
nsGenericElement::AddScriptEventListener(nsIAtom* aAttribute,
const nsString& aValue,
REFNSIID aIID)
{
nsresult ret = NS_OK;
nsIScriptContext* context;
if (nsnull != mDocument) {
nsCOMPtr<nsIScriptGlobalObject> global;
mDocument->GetScriptGlobalObject(getter_AddRefs(global));
if (global) {
if (NS_OK == global->GetContext(&context)) {
if (mNodeInfo->Equals(nsHTMLAtoms::body) ||
mNodeInfo->Equals(nsHTMLAtoms::frameset)) {
nsIDOMEventReceiver *receiver;
if (nsnull != global && NS_OK == global->QueryInterface(kIDOMEventReceiverIID, (void**)&receiver)) {
nsIEventListenerManager *manager;
if (NS_OK == receiver->GetListenerManager(&manager)) {
nsIScriptObjectOwner *mObjectOwner;
if (NS_OK == global->QueryInterface(kIScriptObjectOwnerIID, (void**)&mObjectOwner)) {
ret = manager->AddScriptEventListener(context, mObjectOwner, aAttribute, aValue, aIID, PR_FALSE);
NS_RELEASE(mObjectOwner);
}
NS_RELEASE(manager);
}
NS_RELEASE(receiver);
}
}
else {
nsIEventListenerManager *manager;
if (NS_OK == GetListenerManager(&manager)) {
nsIScriptObjectOwner* cowner;
if (NS_OK == mContent->QueryInterface(kIScriptObjectOwnerIID,
(void**) &cowner)) {
ret = manager->AddScriptEventListener(context, cowner,
aAttribute, aValue, aIID, PR_TRUE);
NS_RELEASE(cowner);
}
NS_RELEASE(manager);
}
}
NS_RELEASE(context);
}
}
}
return ret;
}
static char kNameSpaceSeparator = ':';
nsIAtom*
nsGenericElement::CutNameSpacePrefix(nsString& aString)
{
nsAutoString prefix;
PRInt32 nsoffset = aString.FindChar(kNameSpaceSeparator);
if (-1 != nsoffset) {
aString.Left(prefix, nsoffset);
aString.Cut(0, nsoffset+1);
}
if (0 < prefix.Length()) {
return NS_NewAtom(prefix);
}
return nsnull;
}
//----------------------------------------------------------------------
struct nsGenericAttribute
{
nsGenericAttribute(nsINodeInfo *aNodeInfo, const nsString& aValue)
: mNodeInfo(aNodeInfo),
mValue(aValue)
{
NS_IF_ADDREF(mNodeInfo);
}
~nsGenericAttribute(void)
{
NS_IF_RELEASE(mNodeInfo);
}
#ifdef DEBUG
nsresult SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult) const {
if (!aResult) {
return NS_ERROR_NULL_POINTER;
}
PRUint32 sum = sizeof(*this) - sizeof(mValue);
PRUint32 ssize;
mValue.SizeOf(aSizer, &ssize);
sum += ssize;
*aResult = sum;
return NS_OK;
}
#endif
nsINodeInfo* mNodeInfo;
nsString mValue;
};
nsGenericContainerElement::nsGenericContainerElement()
{
mAttributes = nsnull;
}
nsGenericContainerElement::~nsGenericContainerElement()
{
PRInt32 count = mChildren.Count();
PRInt32 index;
for (index = 0; index < count; index++) {
nsIContent* kid = (nsIContent *)mChildren.ElementAt(index);
kid->SetParent(nsnull);
NS_RELEASE(kid);
}
if (nsnull != mAttributes) {
count = mAttributes->Count();
for (index = 0; index < count; index++) {
nsGenericAttribute* attr = (nsGenericAttribute*)mAttributes->ElementAt(index);
delete attr;
}
delete mAttributes;
}
}
nsresult
nsGenericContainerElement::CopyInnerTo(nsIContent* aSrcContent,
nsGenericContainerElement* aDst,
PRBool aDeep)
{
nsresult result = NS_OK;
if (nsnull != mAttributes) {
nsGenericAttribute* attr;
PRInt32 index;
PRInt32 count = mAttributes->Count();
for (index = 0; index < count; index++) {
attr = (nsGenericAttribute*)mAttributes->ElementAt(index);
// XXX Not very efficient, since SetAttribute does a linear search
// through its attributes before setting each attribute.
result = aDst->SetAttribute(attr->mNodeInfo, attr->mValue, PR_FALSE);
if (NS_OK != result) {
return result;
}
}
}
if (aDeep) {
PRInt32 index;
PRInt32 count = mChildren.Count();
for (index = 0; index < count; index++) {
nsIContent* child = (nsIContent*)mChildren.ElementAt(index);
if (nsnull != child) {
nsIDOMNode* node;
result = child->QueryInterface(kIDOMNodeIID, (void**)&node);
if (NS_OK == result) {
nsIDOMNode* newNode;
result = node->CloneNode(aDeep, &newNode);
if (NS_OK == result) {
nsIContent* newContent;
result = newNode->QueryInterface(kIContentIID, (void**)&newContent);
if (NS_OK == result) {
result = aDst->AppendChildTo(newContent, PR_FALSE);
NS_RELEASE(newContent);
}
NS_RELEASE(newNode);
}
NS_RELEASE(node);
}
if (NS_OK != result) {
return result;
}
}
}
}
return result;
}
nsresult
nsGenericContainerElement::GetChildNodes(nsIDOMNodeList** aChildNodes)
{
nsDOMSlots *slots = GetDOMSlots();
if (nsnull == slots->mChildNodes) {
slots->mChildNodes = new nsChildContentList(mContent);
if (nsnull == slots->mChildNodes) {
return NS_ERROR_OUT_OF_MEMORY;
}
NS_ADDREF(slots->mChildNodes);
}
return slots->mChildNodes->QueryInterface(kIDOMNodeListIID, (void **)aChildNodes);
}
nsresult
nsGenericContainerElement::HasChildNodes(PRBool* aReturn)
{
if (0 != mChildren.Count()) {
*aReturn = PR_TRUE;
}
else {
*aReturn = PR_FALSE;
}
return NS_OK;
}
nsresult
nsGenericContainerElement::GetFirstChild(nsIDOMNode** aNode)
{
nsIContent *child = (nsIContent *)mChildren.ElementAt(0);
if (nsnull != child) {
nsresult res = child->QueryInterface(kIDOMNodeIID, (void**)aNode);
NS_ASSERTION(NS_OK == res, "Must be a DOM Node"); // must be a DOM Node
return res;
}
*aNode = nsnull;
return NS_OK;
}
nsresult
nsGenericContainerElement::GetLastChild(nsIDOMNode** aNode)
{
nsIContent *child = (nsIContent *)mChildren.ElementAt(mChildren.Count()-1);
if (nsnull != child) {
nsresult res = child->QueryInterface(kIDOMNodeIID, (void**)aNode);
NS_ASSERTION(NS_OK == res, "Must be a DOM Node"); // must be a DOM Node
return res;
}
*aNode = nsnull;
return NS_OK;
}
nsresult
nsGenericContainerElement::SetAttribute(PRInt32 aNameSpaceID, nsIAtom* aName,
const nsString& aValue,
PRBool aNotify)
{
NS_ASSERTION(kNameSpaceID_Unknown != aNameSpaceID, "must have name space ID");
if (kNameSpaceID_Unknown == aNameSpaceID) {
return NS_ERROR_ILLEGAL_VALUE;
}
NS_ASSERTION(nsnull != aName, "must have attribute name");
if (nsnull == aName) {
return NS_ERROR_NULL_POINTER;
}
nsresult rv = NS_ERROR_OUT_OF_MEMORY;
if (nsnull == mAttributes) {
mAttributes = new nsVoidArray();
}
if (aNotify && (nsnull != mDocument)) {
mDocument->BeginUpdate();
}
if (nsnull != mAttributes) {
nsGenericAttribute* attr;
PRInt32 index;
PRInt32 count = mAttributes->Count();
for (index = 0; index < count; index++) {
attr = (nsGenericAttribute*)mAttributes->ElementAt(index);
if (attr->mNodeInfo->Equals(aName, aNameSpaceID)) {
attr->mValue = aValue;
rv = NS_OK;
break;
}
}
if (index >= count) { // didn't find it
nsCOMPtr<nsINodeInfoManager> nimgr;
mNodeInfo->GetNodeInfoManager(*getter_AddRefs(nimgr));
nsCOMPtr<nsINodeInfo> ni;
rv = nimgr->GetNodeInfo(aName, nsnull, aNameSpaceID,
*getter_AddRefs(ni));
NS_ENSURE_SUCCESS(rv, rv);
attr = new nsGenericAttribute(ni, aValue);
if (nsnull != attr) {
mAttributes->AppendElement(attr);
rv = NS_OK;
}
}
}
if (mDocument && NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIBindingManager> bindingManager;
mDocument->GetBindingManager(getter_AddRefs(bindingManager));
nsCOMPtr<nsIXBLBinding> binding;
bindingManager->GetBinding(mContent, getter_AddRefs(binding));
if (binding)
binding->AttributeChanged(aName, aNameSpaceID, PR_FALSE);
if (aNotify) {
mDocument->AttributeChanged(mContent, aNameSpaceID, aName, NS_STYLE_HINT_UNKNOWN);
mDocument->EndUpdate();
}
}
return rv;
}
nsresult
nsGenericContainerElement::SetAttribute(nsINodeInfo* aNodeInfo,
const nsString& aValue,
PRBool aNotify)
{
NS_ENSURE_ARG_POINTER(aNodeInfo);
nsCOMPtr<nsIAtom> atom;
PRInt32 nsid;
aNodeInfo->GetNameAtom(*getter_AddRefs(atom));
aNodeInfo->GetNamespaceID(nsid);
// We still rely on the old way of setting the attribute.
return SetAttribute(nsid, atom, aValue, aNotify);
}
nsresult
nsGenericContainerElement::GetAttribute(PRInt32 aNameSpaceID, nsIAtom* aName,
nsString& aResult) const
{
nsCOMPtr<nsIAtom> prefix;
return GetAttribute(aNameSpaceID, aName, *getter_AddRefs(prefix), aResult);
}
nsresult
nsGenericContainerElement::GetAttribute(PRInt32 aNameSpaceID, nsIAtom* aName,
nsIAtom*& aPrefix,
nsString& aResult) const
{
NS_ASSERTION(nsnull != aName, "must have attribute name");
if (nsnull == aName) {
return NS_ERROR_NULL_POINTER;
}
nsresult rv = NS_CONTENT_ATTR_NOT_THERE;
if (nsnull != mAttributes) {
PRInt32 count = mAttributes->Count();
PRInt32 index;
for (index = 0; index < count; index++) {
const nsGenericAttribute* attr = (const nsGenericAttribute*)mAttributes->ElementAt(index);
if ((attr->mNodeInfo->NamespaceEquals(kNameSpaceID_Unknown) ||
attr->mNodeInfo->NamespaceEquals(aNameSpaceID)) &&
(attr->mNodeInfo->Equals(aName))) {
attr->mNodeInfo->GetPrefixAtom(aPrefix);
aResult = attr->mValue;
if (0 < aResult.Length()) {
rv = NS_CONTENT_ATTR_HAS_VALUE;
}
else {
rv = NS_CONTENT_ATTR_NO_VALUE;
}
break;
}
}
}
if (rv == NS_CONTENT_ATTR_NOT_THERE) {
// In other cases we already set the out param.
// Since we are returning a success code we'd better do
// something about the out parameters (someone may have
// given us a non-empty string).
aResult.Truncate();
}
return rv;
}
nsresult
nsGenericContainerElement::UnsetAttribute(PRInt32 aNameSpaceID, nsIAtom* aName,
PRBool aNotify)
{
NS_ASSERTION(nsnull != aName, "must have attribute name");
if (nsnull == aName) {
return NS_ERROR_NULL_POINTER;
}
nsresult rv = NS_OK;
if (nsnull != mAttributes) {
PRInt32 count = mAttributes->Count();
PRInt32 index;
PRBool found = PR_FALSE;
for (index = 0; index < count; index++) {
nsGenericAttribute* attr = (nsGenericAttribute*)mAttributes->ElementAt(index);
if ((attr->mNodeInfo->NamespaceEquals(kNameSpaceID_Unknown) ||
attr->mNodeInfo->NamespaceEquals(aNameSpaceID)) &&
attr->mNodeInfo->Equals(aName)) {
if (aNotify && (nsnull != mDocument)) {
mDocument->BeginUpdate();
}
mAttributes->RemoveElementAt(index);
delete attr;
found = PR_TRUE;
break;
}
}
if (NS_SUCCEEDED(rv) && found && mDocument) {
nsCOMPtr<nsIBindingManager> bindingManager;
mDocument->GetBindingManager(getter_AddRefs(bindingManager));
nsCOMPtr<nsIXBLBinding> binding;
bindingManager->GetBinding(mContent, getter_AddRefs(binding));
if (binding)
binding->AttributeChanged(aName, aNameSpaceID, PR_TRUE);
if (aNotify) {
mDocument->AttributeChanged(mContent, aNameSpaceID, aName, NS_STYLE_HINT_UNKNOWN);
mDocument->EndUpdate();
}
}
}
return rv;
}
nsresult
nsGenericContainerElement::GetAttributeNameAt(PRInt32 aIndex,
PRInt32& aNameSpaceID,
nsIAtom*& aName,
nsIAtom*& aPrefix) const
{
if (nsnull != mAttributes) {
nsGenericAttribute* attr = (nsGenericAttribute*)mAttributes->ElementAt(aIndex);
if (nsnull != attr) {
attr->mNodeInfo->GetNamespaceID(aNameSpaceID);
attr->mNodeInfo->GetNameAtom(aName);
attr->mNodeInfo->GetPrefixAtom(aPrefix);
return NS_OK;
}
}
aNameSpaceID = kNameSpaceID_None;
aName = nsnull;
return NS_ERROR_ILLEGAL_VALUE;
}
nsresult
nsGenericContainerElement::GetAttributeCount(PRInt32& aResult) const
{
if (nsnull != mAttributes) {
aResult = mAttributes->Count();
}
else {
aResult = 0;
}
return NS_OK;
}
void
nsGenericContainerElement::ListAttributes(FILE* out) const
{
PRInt32 index, count;
GetAttributeCount(count);
for (index = 0; index < count; index++) {
const nsGenericAttribute* attr = (const nsGenericAttribute*)mAttributes->ElementAt(index);
nsAutoString buffer;
// name
nsAutoString name;
attr->mNodeInfo->GetQualifiedName(name);
buffer.Append(name);
// value
buffer.AppendWithConversion("=");
buffer.Append(attr->mValue);
fputs(" ", out);
fputs(buffer, out);
}
}
nsresult
nsGenericContainerElement::List(FILE* out, PRInt32 aIndent) const
{
NS_PRECONDITION(nsnull != mDocument, "bad content");
PRInt32 index;
for (index = aIndent; --index >= 0; ) fputs(" ", out);
nsAutoString buf;
mNodeInfo->GetQualifiedName(buf);
fputs(buf, out);
fprintf(out, "@%p", mContent);
ListAttributes(out);
nsIContent* hc = mContent;
nsrefcnt r = NS_ADDREF(hc) - 1;
NS_RELEASE(hc);
fprintf(out, " refcount=%d<", r);
PRBool canHaveKids;
mContent->CanContainChildren(canHaveKids);
if (canHaveKids) {
fputs("\n", out);
PRInt32 kids;
mContent->ChildCount(kids);
for (index = 0; index < kids; index++) {
nsIContent* kid;
mContent->ChildAt(index, kid);
kid->List(out, aIndent + 1);
NS_RELEASE(kid);
}
for (index = aIndent; --index >= 0; ) fputs(" ", out);
}
fputs(">\n", out);
return NS_OK;
}
nsresult
nsGenericContainerElement::CanContainChildren(PRBool& aResult) const
{
aResult = PR_TRUE;
return NS_OK;
}
nsresult
nsGenericContainerElement::ChildCount(PRInt32& aCount) const
{
aCount = mChildren.Count();
return NS_OK;
}
nsresult
nsGenericContainerElement::ChildAt(PRInt32 aIndex,
nsIContent*& aResult) const
{
nsIContent *child = (nsIContent *)mChildren.ElementAt(aIndex);
if (nsnull != child) {
NS_ADDREF(child);
}
aResult = child;
return NS_OK;
}
nsresult
nsGenericContainerElement::IndexOf(nsIContent* aPossibleChild,
PRInt32& aIndex) const
{
NS_PRECONDITION(nsnull != aPossibleChild, "null ptr");
aIndex = mChildren.IndexOf(aPossibleChild);
return NS_OK;
}
nsresult
nsGenericContainerElement::InsertChildAt(nsIContent* aKid,
PRInt32 aIndex,
PRBool aNotify)
{
NS_PRECONDITION(nsnull != aKid, "null ptr");
nsIDocument* doc = mDocument;
if (aNotify && (nsnull != doc)) {
doc->BeginUpdate();
}
PRBool rv = mChildren.InsertElementAt(aKid, aIndex);/* XXX fix up void array api to use nsresult's*/
if (rv) {
NS_ADDREF(aKid);
aKid->SetParent(mContent);
nsRange::OwnerChildInserted(mContent, aIndex);
if (nsnull != doc) {
aKid->SetDocument(doc, PR_FALSE, PR_TRUE);
if (aNotify) {
doc->ContentInserted(mContent, aKid, aIndex);
}
}
}
if (aNotify && (nsnull != doc)) {
doc->EndUpdate();
}
return NS_OK;
}
nsresult
nsGenericContainerElement::ReplaceChildAt(nsIContent* aKid,
PRInt32 aIndex,
PRBool aNotify)
{
NS_PRECONDITION(nsnull != aKid, "null ptr");
nsIDocument* doc = mDocument;
if (aNotify && (nsnull != mDocument)) {
doc->BeginUpdate();
}
nsIContent* oldKid = (nsIContent *)mChildren.ElementAt(aIndex);
nsRange::OwnerChildReplaced(mContent, aIndex, oldKid);
PRBool rv = mChildren.ReplaceElementAt(aKid, aIndex);
if (rv) {
NS_ADDREF(aKid);
aKid->SetParent(mContent);
if (nsnull != doc) {
aKid->SetDocument(doc, PR_FALSE, PR_TRUE);
if (aNotify) {
doc->ContentReplaced(mContent, oldKid, aKid, aIndex);
}
}
oldKid->SetDocument(nsnull, PR_TRUE, PR_TRUE);
oldKid->SetParent(nsnull);
NS_RELEASE(oldKid);
}
if (aNotify && (nsnull != mDocument)) {
doc->EndUpdate();
}
return NS_OK;
}
nsresult
nsGenericContainerElement::AppendChildTo(nsIContent* aKid, PRBool aNotify)
{
NS_PRECONDITION((nsnull != aKid) && (aKid != mContent), "null ptr");
nsIDocument* doc = mDocument;
if (aNotify && (nsnull != doc)) {
doc->BeginUpdate();
}
PRBool rv = mChildren.AppendElement(aKid);
if (rv) {
NS_ADDREF(aKid);
aKid->SetParent(mContent);
// ranges don't need adjustment since new child is at end of list
if (nsnull != doc) {
aKid->SetDocument(doc, PR_FALSE, PR_TRUE);
if (aNotify) {
doc->ContentAppended(mContent, mChildren.Count() - 1);
}
}
}
if (aNotify && (nsnull != doc)) {
doc->EndUpdate();
}
return NS_OK;
}
nsresult
nsGenericContainerElement::RemoveChildAt(PRInt32 aIndex, PRBool aNotify)
{
nsIContent* oldKid = (nsIContent *)mChildren.ElementAt(aIndex);
if (nsnull != oldKid ) {
nsIDocument* doc = mDocument;
if (aNotify && (nsnull != doc)) {
doc->BeginUpdate();
}
nsRange::OwnerChildRemoved(mContent, aIndex, oldKid);
mChildren.RemoveElementAt(aIndex);
if (aNotify) {
if (nsnull != doc) {
doc->ContentRemoved(mContent, oldKid, aIndex);
}
}
oldKid->SetDocument(nsnull, PR_TRUE, PR_TRUE);
oldKid->SetParent(nsnull);
NS_RELEASE(oldKid);
if (aNotify && (nsnull != doc)) {
doc->EndUpdate();
}
}
return NS_OK;
}
// XXX To be implemented
nsresult
nsGenericContainerElement::BeginConvertToXIF(nsIXIFConverter* aConverter) const
{
return NS_OK;
}
nsresult
nsGenericContainerElement::ConvertContentToXIF(nsIXIFConverter* aConverter) const
{
return NS_OK;
}
nsresult
nsGenericContainerElement::FinishConvertToXIF(nsIXIFConverter* aConverter) const
{
return NS_OK;
}
nsresult
nsGenericContainerElement::SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult,
size_t aInstanceSize) const
{
if (!aResult) {
return NS_ERROR_NULL_POINTER;
}
PRUint32 sum = 0;
#ifdef DEBUG
sum += aInstanceSize;
if (mAttributes) {
// Add in array of attributes size
PRUint32 asize;
mAttributes->SizeOf(aSizer, &asize);
sum += asize;
// Add in each attributes size
PRInt32 i, n = mAttributes->Count();
for (i = 0; i < n; i++) {
const nsGenericAttribute* attr = (const nsGenericAttribute*)
mAttributes->ElementAt(i);
if (attr) {
PRUint32 asum = 0;
attr->SizeOf(aSizer, &asum);
sum += asum;
}
}
}
#endif
*aResult = sum;
return NS_OK;
}
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