mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
e5d87ec5bb
--HG-- extra : rebase_source : 8e03b54ff6117dcac27188b296c59dcafbb6db78
369 lines
11 KiB
C++
369 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* Implementation of DOM Core's nsIDOMText node.
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*/
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#include "nsTextNode.h"
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#include "nsIDOM3Text.h"
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#include "nsContentUtils.h"
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#include "nsIDOMEventListener.h"
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#include "nsIDOMEventTarget.h"
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#include "nsIDOMMutationEvent.h"
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#include "nsIAttribute.h"
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#include "nsIDocument.h"
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#include "nsThreadUtils.h"
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/**
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* class used to implement attr() generated content
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*/
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class nsAttributeTextNode : public nsTextNode,
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public nsStubMutationObserver
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{
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public:
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NS_DECL_ISUPPORTS_INHERITED
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nsAttributeTextNode(nsINodeInfo *aNodeInfo,
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PRInt32 aNameSpaceID,
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nsIAtom* aAttrName) :
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nsTextNode(aNodeInfo),
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mGrandparent(nsnull),
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mNameSpaceID(aNameSpaceID),
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mAttrName(aAttrName)
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{
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NS_ASSERTION(mNameSpaceID != kNameSpaceID_Unknown, "Must know namespace");
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NS_ASSERTION(mAttrName, "Must have attr name");
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}
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virtual ~nsAttributeTextNode() {
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NS_ASSERTION(!mGrandparent, "We were not unbound!");
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}
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virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
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nsIContent* aBindingParent,
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PRBool aCompileEventHandlers);
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virtual void UnbindFromTree(PRBool aDeep = PR_TRUE,
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PRBool aNullParent = PR_TRUE);
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NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
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NS_DECL_NSIMUTATIONOBSERVER_NODEWILLBEDESTROYED
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virtual nsGenericDOMDataNode *CloneDataNode(nsINodeInfo *aNodeInfo,
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PRBool aCloneText) const
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{
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nsAttributeTextNode *it = new nsAttributeTextNode(aNodeInfo,
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mNameSpaceID,
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mAttrName);
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if (it && aCloneText) {
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it->mText = mText;
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}
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return it;
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}
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// Public method for the event to run
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void UpdateText() {
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UpdateText(PR_TRUE);
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}
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private:
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// Update our text to our parent's current attr value
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void UpdateText(PRBool aNotify);
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// This doesn't need to be a strong pointer because it's only non-null
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// while we're bound to the document tree, and it points to an ancestor
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// so the ancestor must be bound to the document tree the whole time
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// and can't be deleted.
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nsIContent* mGrandparent;
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// What attribute we're showing
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PRInt32 mNameSpaceID;
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nsCOMPtr<nsIAtom> mAttrName;
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};
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nsresult
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NS_NewTextNode(nsIContent** aInstancePtrResult,
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nsNodeInfoManager *aNodeInfoManager)
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{
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NS_PRECONDITION(aNodeInfoManager, "Missing nodeInfoManager");
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*aInstancePtrResult = nsnull;
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nsCOMPtr<nsINodeInfo> ni = aNodeInfoManager->GetTextNodeInfo();
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if (!ni) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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nsIContent *instance = new nsTextNode(ni);
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if (!instance) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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NS_ADDREF(*aInstancePtrResult = instance);
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return NS_OK;
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}
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nsTextNode::nsTextNode(nsINodeInfo *aNodeInfo)
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: nsGenericDOMDataNode(aNodeInfo)
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{
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}
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nsTextNode::~nsTextNode()
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{
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}
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NS_IMPL_ADDREF_INHERITED(nsTextNode, nsGenericDOMDataNode)
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NS_IMPL_RELEASE_INHERITED(nsTextNode, nsGenericDOMDataNode)
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// QueryInterface implementation for nsTextNode
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NS_INTERFACE_TABLE_HEAD(nsTextNode)
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NS_NODE_INTERFACE_TABLE3(nsTextNode, nsIDOMNode, nsIDOMText,
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nsIDOMCharacterData)
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NS_INTERFACE_MAP_ENTRY_TEAROFF(nsIDOM3Text, new nsText3Tearoff(this))
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NS_INTERFACE_MAP_ENTRIES_CYCLE_COLLECTION(nsTextNode)
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NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(Text)
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NS_INTERFACE_MAP_END_INHERITING(nsGenericDOMDataNode)
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NS_IMETHODIMP
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nsTextNode::GetNodeName(nsAString& aNodeName)
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{
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aNodeName.AssignLiteral("#text");
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return NS_OK;
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}
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NS_IMETHODIMP
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nsTextNode::GetNodeValue(nsAString& aNodeValue)
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{
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return nsGenericDOMDataNode::GetNodeValue(aNodeValue);
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}
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NS_IMETHODIMP
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nsTextNode::SetNodeValue(const nsAString& aNodeValue)
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{
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return nsGenericDOMDataNode::SetNodeValue(aNodeValue);
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}
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NS_IMETHODIMP
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nsTextNode::GetNodeType(PRUint16* aNodeType)
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{
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*aNodeType = (PRUint16)nsIDOMNode::TEXT_NODE;
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return NS_OK;
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}
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PRBool
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nsTextNode::IsNodeOfType(PRUint32 aFlags) const
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{
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return !(aFlags & ~(eCONTENT | eTEXT | eDATA_NODE));
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}
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nsGenericDOMDataNode*
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nsTextNode::CloneDataNode(nsINodeInfo *aNodeInfo, PRBool aCloneText) const
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{
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nsTextNode *it = new nsTextNode(aNodeInfo);
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if (it && aCloneText) {
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it->mText = mText;
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}
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return it;
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}
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nsresult
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nsTextNode::BindToAttribute(nsIAttribute* aAttr)
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{
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NS_ASSERTION(!IsInDoc(), "Unbind before binding!");
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NS_ASSERTION(!GetNodeParent(), "Unbind before binding!");
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NS_ASSERTION(HasSameOwnerDoc(aAttr), "Wrong owner document!");
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mParentPtrBits = reinterpret_cast<PtrBits>(aAttr);
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return NS_OK;
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}
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nsresult
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nsTextNode::UnbindFromAttribute()
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{
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NS_ASSERTION(GetNodeParent(), "Bind before unbinging!");
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NS_ASSERTION(GetNodeParent() &&
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GetNodeParent()->IsNodeOfType(nsINode::eATTRIBUTE),
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"Use this method only to unbind from an attribute!");
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mParentPtrBits = 0;
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return NS_OK;
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}
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#ifdef DEBUG
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void
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nsTextNode::List(FILE* out, PRInt32 aIndent) const
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{
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PRInt32 index;
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for (index = aIndent; --index >= 0; ) fputs(" ", out);
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fprintf(out, "Text@%p", static_cast<const void*>(this));
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fprintf(out, " intrinsicstate=[%08x]", IntrinsicState());
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fprintf(out, " refcount=%d<", mRefCnt.get());
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nsAutoString tmp;
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ToCString(tmp, 0, mText.GetLength());
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fputs(NS_LossyConvertUTF16toASCII(tmp).get(), out);
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fputs(">\n", out);
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}
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void
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nsTextNode::DumpContent(FILE* out, PRInt32 aIndent, PRBool aDumpAll) const
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{
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if(aDumpAll) {
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PRInt32 index;
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for (index = aIndent; --index >= 0; ) fputs(" ", out);
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nsAutoString tmp;
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ToCString(tmp, 0, mText.GetLength());
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if(!tmp.EqualsLiteral("\\n")) {
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fputs(NS_LossyConvertUTF16toASCII(tmp).get(), out);
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if(aIndent) fputs("\n", out);
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}
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}
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}
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#endif
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nsresult
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NS_NewAttributeContent(nsNodeInfoManager *aNodeInfoManager,
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PRInt32 aNameSpaceID, nsIAtom* aAttrName,
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nsIContent** aResult)
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{
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NS_PRECONDITION(aNodeInfoManager, "Missing nodeInfoManager");
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NS_PRECONDITION(aAttrName, "Must have an attr name");
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NS_PRECONDITION(aNameSpaceID != kNameSpaceID_Unknown, "Must know namespace");
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*aResult = nsnull;
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nsCOMPtr<nsINodeInfo> ni = aNodeInfoManager->GetTextNodeInfo();
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if (!ni) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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nsAttributeTextNode* textNode = new nsAttributeTextNode(ni, aNameSpaceID,
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aAttrName);
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if (!textNode) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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NS_ADDREF(*aResult = textNode);
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return NS_OK;
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}
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NS_IMPL_ISUPPORTS_INHERITED1(nsAttributeTextNode, nsTextNode,
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nsIMutationObserver)
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nsresult
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nsAttributeTextNode::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
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nsIContent* aBindingParent,
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PRBool aCompileEventHandlers)
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{
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NS_PRECONDITION(aParent && aParent->GetParent(),
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"This node can't be a child of the document or of the document root");
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nsresult rv = nsTextNode::BindToTree(aDocument, aParent,
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aBindingParent, aCompileEventHandlers);
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NS_ENSURE_SUCCESS(rv, rv);
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NS_ASSERTION(!mGrandparent, "We were already bound!");
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mGrandparent = aParent->GetParent();
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mGrandparent->AddMutationObserver(this);
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// Note that there is no need to notify here, since we have no
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// frame yet at this point.
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UpdateText(PR_FALSE);
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return NS_OK;
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}
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void
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nsAttributeTextNode::UnbindFromTree(PRBool aDeep, PRBool aNullParent)
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{
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// UnbindFromTree can be called anytime so we have to be safe.
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if (mGrandparent) {
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// aNullParent might not be true here, but we want to remove the
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// mutation observer anyway since we only need it while we're
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// in the document.
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mGrandparent->RemoveMutationObserver(this);
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mGrandparent = nsnull;
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}
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nsTextNode::UnbindFromTree(aDeep, aNullParent);
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}
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void
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nsAttributeTextNode::AttributeChanged(nsIDocument* aDocument,
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nsIContent* aContent,
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PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aModType)
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{
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if (aNameSpaceID == mNameSpaceID && aAttribute == mAttrName &&
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aContent == mGrandparent) {
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// Since UpdateText notifies, do it asynchronously. Note that if we get
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// unbound while the event is up that's ok -- we'll just have no
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// grandparent when it fires, and will do nothing.
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// XXXbz ideally we'd either process this on layout flushes or do it right
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// after nsIMutationObserver notifications are over or something, instead
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// of doing it fully async.
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nsCOMPtr<nsIRunnable> ev = new nsRunnableMethod<nsAttributeTextNode>(
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this, &nsAttributeTextNode::UpdateText);
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NS_DispatchToCurrentThread(ev);
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}
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}
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void
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nsAttributeTextNode::NodeWillBeDestroyed(const nsINode* aNode)
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{
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NS_ASSERTION(aNode == static_cast<nsINode*>(mGrandparent), "Wrong node!");
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mGrandparent = nsnull;
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}
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void
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nsAttributeTextNode::UpdateText(PRBool aNotify)
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{
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if (mGrandparent) {
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nsAutoString attrValue;
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mGrandparent->GetAttr(mNameSpaceID, mAttrName, attrValue);
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SetText(attrValue, aNotify);
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}
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}
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