6322c04952
r+sr=darin git-svn-id: svn://10.0.0.236/trunk@188844 18797224-902f-48f8-a5cc-f745e15eee43
397 lines
11 KiB
C++
397 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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#include "nsGenericDOMDataNode.h"
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#include "nsIDOMText.h"
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#include "nsLayoutAtoms.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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/**
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* Class used to implement DOM text nodes
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*/
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class nsTextNode : public nsGenericDOMDataNode,
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public nsIDOMText
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{
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public:
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nsTextNode(nsINodeInfo *aNodeInfo);
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virtual ~nsTextNode();
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// nsISupports
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NS_DECL_ISUPPORTS_INHERITED
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// nsIDOMNode
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NS_IMPL_NSIDOMNODE_USING_GENERIC_DOM_DATA
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// nsIDOMCharacterData
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NS_FORWARD_NSIDOMCHARACTERDATA(nsGenericDOMDataNode::)
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// nsIDOMText
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NS_FORWARD_NSIDOMTEXT(nsGenericDOMDataNode::)
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// nsIContent
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virtual PRBool IsContentOfType(PRUint32 aFlags) const;
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#ifdef DEBUG
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virtual void List(FILE* out, PRInt32 aIndent) const;
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virtual void DumpContent(FILE* out, PRInt32 aIndent, PRBool aDumpAll) const;
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#endif
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};
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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:
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class nsAttrChangeListener : public nsIDOMEventListener {
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIDOMEVENTLISTENER
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nsAttrChangeListener(PRInt32 aNameSpaceID, nsIAtom* aAttrName,
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nsITextContent* aContent) :
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mNameSpaceID(aNameSpaceID),
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mAttrName(aAttrName),
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mContent(aContent)
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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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NS_ASSERTION(mContent, "Must have text content");
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}
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virtual PRBool IsNativeAnonymous() const { return PR_TRUE; }
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virtual void SetNativeAnonymous(PRBool aAnonymous) {
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NS_ASSERTION(aAnonymous,
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"Attempt to set nsAttributeTextNode not anonymous!");
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}
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protected:
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friend class nsAttributeTextNode;
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PRInt32 mNameSpaceID;
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nsCOMPtr<nsIAtom> mAttrName;
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nsITextContent* mContent; // Weak ref; it owns us
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};
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nsAttributeTextNode(nsINodeInfo *aNodeInfo) : nsTextNode(aNodeInfo)
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{
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}
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virtual ~nsAttributeTextNode() {
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DetachListener();
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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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virtual nsGenericDOMDataNode *Clone(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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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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nsRefPtr<nsAttrChangeListener> mListener; // our listener
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private:
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void DetachListener();
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};
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nsresult
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NS_NewTextNode(nsITextContent** 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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nsITextContent *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_MAP_BEGIN(nsTextNode)
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NS_INTERFACE_MAP_ENTRY(nsITextContent)
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NS_INTERFACE_MAP_ENTRY(nsIDOMNode)
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NS_INTERFACE_MAP_ENTRY(nsIDOMText)
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NS_INTERFACE_MAP_ENTRY(nsIDOMCharacterData)
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NS_INTERFACE_MAP_ENTRY_CONTENT_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::IsContentOfType(PRUint32 aFlags) const
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{
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return !(aFlags & ~eTEXT);
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}
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nsGenericDOMDataNode*
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nsTextNode::Clone(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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#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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NS_PRECONDITION(IsInDoc(), "bad content");
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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 refcount=%d<", this, 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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NS_PRECONDITION(IsInDoc(), "bad content");
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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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NS_IMPL_ISUPPORTS1(nsAttributeTextNode::nsAttrChangeListener,
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nsIDOMEventListener)
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NS_IMETHODIMP
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nsAttributeTextNode::nsAttrChangeListener::HandleEvent(nsIDOMEvent* aEvent)
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{
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// If mContent is null while we still get events, something is very wrong
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NS_ENSURE_TRUE(mContent, NS_ERROR_UNEXPECTED);
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nsCOMPtr<nsIDOMMutationEvent> event(do_QueryInterface(aEvent));
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NS_ENSURE_TRUE(event, NS_ERROR_UNEXPECTED);
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nsCOMPtr<nsIDOMEventTarget> target;
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event->GetTarget(getter_AddRefs(target));
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// Can't compare as an nsIDOMEventTarget, since that's implemented via a
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// tearoff...
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nsCOMPtr<nsIContent> targetContent(do_QueryInterface(target));
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if (targetContent != mContent->GetParent()) {
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// not the right node
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return NS_OK;
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}
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nsCOMPtr<nsIDOMNode> relatedNode;
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event->GetRelatedNode(getter_AddRefs(relatedNode));
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NS_ENSURE_TRUE(relatedNode, NS_ERROR_UNEXPECTED);
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nsCOMPtr<nsIAttribute> attr(do_QueryInterface(relatedNode));
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NS_ENSURE_TRUE(attr, NS_ERROR_UNEXPECTED);
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if (attr->NodeInfo()->Equals(mAttrName, mNameSpaceID)) {
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nsAutoString value;
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targetContent->GetAttr(mNameSpaceID, mAttrName, value);
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mContent->SetText(value, PR_TRUE);
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}
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return NS_OK;
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}
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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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nsRefPtr<nsAttributeTextNode> textNode = new nsAttributeTextNode(ni);
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if (!textNode) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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textNode->mListener =
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new nsAttributeTextNode::nsAttrChangeListener(aNameSpaceID,
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aAttrName,
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textNode);
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NS_ENSURE_TRUE(textNode->mListener, NS_ERROR_OUT_OF_MEMORY);
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NS_ADDREF(*aResult = textNode);
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return NS_OK;
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}
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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, "This node can't be a child of the document");
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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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if (mListener) {
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// Attach it to the new parent
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nsCOMPtr<nsIDOMEventTarget> eventTarget(do_QueryInterface(aParent));
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NS_ENSURE_TRUE(eventTarget, NS_ERROR_UNEXPECTED);
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rv = eventTarget->AddEventListener(NS_LITERAL_STRING("DOMAttrModified"),
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mListener,
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PR_FALSE);
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NS_ENSURE_SUCCESS(rv, rv);
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nsAutoString attrValue;
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aParent->GetAttr(mListener->mNameSpaceID, mListener->mAttrName,
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attrValue);
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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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SetText(attrValue, PR_FALSE);
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}
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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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// Detach the listener while we know who our parent is!
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if (aNullParent) {
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DetachListener();
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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::DetachListener()
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{
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if (!mListener)
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return;
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nsCOMPtr<nsIDOMEventTarget> target(do_QueryInterface(GetParent()));
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if (target) {
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#ifdef DEBUG
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nsresult rv =
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#endif
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target->RemoveEventListener(NS_LITERAL_STRING("DOMAttrModified"),
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mListener,
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PR_FALSE);
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NS_ASSERTION(NS_SUCCEEDED(rv), "'Leaking' listener for lifetime of this page");
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}
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mListener->mContent = nsnull; // Make it forget us
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mListener = nsnull; // Goodbye, listener
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}
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