452 lines
13 KiB
C++
452 lines
13 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsIDOMComment.h"
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#include "nsGenericDOMDataNode.h"
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#include "nsIDOMEventReceiver.h"
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#include "nsIContent.h"
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#include "nsLayoutAtoms.h"
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#include "nsISelection.h"
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#include "nsISelectionPrivate.h"
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#include "nsIDocument.h"
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#include "nsIEnumerator.h"
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#include "nsCOMPtr.h"
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#include "nsIDOMRange.h"
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#include "nsString.h"
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#include "nsContentUtils.h"
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class nsCommentNode : public nsIDOMComment,
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public nsITextContent
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{
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public:
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nsCommentNode();
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virtual ~nsCommentNode();
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIDOMNode
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NS_IMPL_NSIDOMNODE_USING_GENERIC_DOM_DATA(mInner)
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// nsIDOMCharacterData
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NS_IMPL_NSIDOMCHARACTERDATA_USING_GENERIC_DOM_DATA(mInner)
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// nsIDOMComment
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// nsIContent
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//NS_IMPL_ICONTENT_USING_GENERIC_DOM_DATA(mInner)
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NS_IMETHOD GetDocument(nsIDocument*& aResult) const {
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return mInner.GetDocument(aResult);
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}
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NS_IMETHOD SetDocument(nsIDocument* aDocument, PRBool aDeep, PRBool aCompileEventHandlers) {
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return mInner.SetDocument(aDocument, aDeep, aCompileEventHandlers);
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}
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NS_IMETHOD GetParent(nsIContent*& aResult) const {
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return mInner.GetParent(aResult);
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}
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NS_IMETHOD SetParent(nsIContent* aParent) {
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return mInner.SetParent(aParent);
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}
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NS_IMETHOD CanContainChildren(PRBool& aResult) const {
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return mInner.CanContainChildren(aResult);
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}
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NS_IMETHOD ChildCount(PRInt32& aResult) const {
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return mInner.ChildCount(aResult);
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}
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NS_IMETHOD ChildAt(PRInt32 aIndex, nsIContent*& aResult) const {
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return mInner.ChildAt(aIndex, aResult);
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}
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NS_IMETHOD IndexOf(nsIContent* aPossibleChild, PRInt32& aResult) const {
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return mInner.IndexOf(aPossibleChild, aResult);
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}
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NS_IMETHOD InsertChildAt(nsIContent* aKid, PRInt32 aIndex,
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PRBool aNotify, PRBool aDeepSetDocument) {
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return mInner.InsertChildAt(aKid, aIndex, aNotify, aDeepSetDocument);
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}
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NS_IMETHOD ReplaceChildAt(nsIContent* aKid, PRInt32 aIndex,
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PRBool aNotify, PRBool aDeepSetDocument) {
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return mInner.ReplaceChildAt(aKid, aIndex, aNotify, aDeepSetDocument);
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}
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NS_IMETHOD AppendChildTo(nsIContent* aKid, PRBool aNotify,
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PRBool aDeepSetDocument) {
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return mInner.AppendChildTo(aKid, aNotify, aDeepSetDocument);
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}
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NS_IMETHOD RemoveChildAt(PRInt32 aIndex, PRBool aNotify) {
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return mInner.RemoveChildAt(aIndex, aNotify);
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}
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NS_IMETHOD GetNameSpaceID(PRInt32& aID) const {
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return mInner.GetNameSpaceID(aID);
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}
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NS_IMETHOD GetTag(nsIAtom*& aResult) const;
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NS_IMETHOD GetNodeInfo(nsINodeInfo*& aResult) const {
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aResult = nsnull; return NS_OK;
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}
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NS_IMETHOD NormalizeAttributeString(const nsAReadableString& aStr,
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nsINodeInfo*& aNodeInfo) {
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aNodeInfo = nsnull;
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return NS_OK;
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}
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NS_IMETHOD GetAttribute(PRInt32 aNameSpaceID, nsIAtom *aAttribute,
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nsAWritableString& aResult) const {
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return mInner.GetAttribute(aNameSpaceID, aAttribute, aResult);
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}
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NS_IMETHOD GetAttribute(PRInt32 aNameSpaceID, nsIAtom *aAttribute,
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nsIAtom*& aPrefix, nsAWritableString& aResult) const {
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return mInner.GetAttribute(aNameSpaceID, aAttribute, aPrefix, aResult);
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}
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NS_IMETHOD SetAttribute(PRInt32 aNameSpaceID, nsIAtom* aAttribute,
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const nsAReadableString& aValue, PRBool aNotify) {
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return mInner.SetAttribute(aNameSpaceID, aAttribute, aValue, aNotify);
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}
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NS_IMETHOD SetAttribute(nsINodeInfo* aNodeInfo,
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const nsAReadableString& aValue, PRBool aNotify) {
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return mInner.SetAttribute(aNodeInfo, aValue, aNotify);
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}
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NS_IMETHOD UnsetAttribute(PRInt32 aNameSpaceID, nsIAtom* aAttribute,
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PRBool aNotify) {
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return mInner.UnsetAttribute(aNameSpaceID, aAttribute, aNotify);
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}
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NS_IMETHOD GetAttributeNameAt(PRInt32 aIndex,
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PRInt32& aNameSpaceID,
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nsIAtom*& aName,
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nsIAtom*& aPrefix) const {
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return mInner.GetAttributeNameAt(aIndex, aNameSpaceID, aName, aPrefix);
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}
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NS_IMETHOD GetAttributeCount(PRInt32& aResult) const {
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return mInner.GetAttributeCount(aResult);
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}
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NS_IMETHOD List(FILE* out, PRInt32 aIndent) const;
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NS_IMETHOD DumpContent(FILE* out = stdout, PRInt32 aIndent = 0,PRBool aDumpAll=PR_TRUE) const {
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return NS_OK;
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}
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NS_IMETHOD HandleDOMEvent(nsIPresContext* aPresContext,
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nsEvent* aEvent,
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nsIDOMEvent** aDOMEvent,
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PRUint32 aFlags,
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nsEventStatus* aEventStatus);
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NS_IMETHOD GetContentID(PRUint32* aID) {
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*aID = mContentID;
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return NS_OK;
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}
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NS_IMETHOD SetContentID(PRUint32 aID) {
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mContentID = aID;
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return NS_OK;
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}
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NS_IMETHOD RangeAdd(nsIDOMRange& aRange){
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return mInner.RangeAdd(aRange);
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}
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NS_IMETHOD RangeRemove(nsIDOMRange& aRange){
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return mInner.RangeRemove(aRange);
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}
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NS_IMETHOD GetRangeList(nsVoidArray*& aResult) const {
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return mInner.GetRangeList(aResult);
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}
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NS_IMETHOD SetFocus(nsIPresContext* aContext) {
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return mInner.SetFocus(aContext);
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}
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NS_IMETHOD RemoveFocus(nsIPresContext* aContext) {
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return mInner.RemoveFocus(aContext);
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}
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NS_IMETHOD GetBindingParent(nsIContent** aContent) {
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return mInner.GetBindingParent(aContent);
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}
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NS_IMETHOD SetBindingParent(nsIContent* aParent) {
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return mInner.SetBindingParent(aParent);
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}
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NS_IMETHOD_(PRBool) IsContentOfType(PRUint32 aFlags) {
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return PR_FALSE;
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}
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NS_IMETHOD GetListenerManager(nsIEventListenerManager** aResult) {
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return mInner.GetListenerManager(this, aResult);
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}
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NS_IMETHOD SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult) const {
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if (!aResult) {
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return NS_ERROR_NULL_POINTER;
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}
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#ifdef DEBUG
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*aResult = sizeof(*this);
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#else
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*aResult = 0;
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#endif
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return NS_OK;
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}
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NS_IMETHOD GetText(const nsTextFragment** aFragmentsResult)
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{ return mInner.GetText(aFragmentsResult); }
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NS_IMETHOD GetTextLength(PRInt32* aLengthResult) {
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return mInner.GetTextLength(aLengthResult);
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}
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NS_IMETHOD CopyText(nsAWritableString& aResult) {
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return mInner.CopyText(aResult);
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}
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NS_IMETHOD SetText(const PRUnichar* aBuffer,
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PRInt32 aLength,
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PRBool aNotify);
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NS_IMETHOD SetText(const nsAReadableString& aStr,
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PRBool aNotify);
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NS_IMETHOD SetText(const char* aBuffer,
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PRInt32 aLength,
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PRBool aNotify);
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NS_IMETHOD IsOnlyWhitespace(PRBool* aResult)
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{ return mInner.IsOnlyWhitespace(aResult); }
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NS_IMETHOD CloneContent(PRBool aCloneText, nsITextContent** aClone);
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protected:
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nsGenericDOMDataNode mInner;
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PRUint32 mContentID;
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};
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nsresult
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NS_NewCommentNode(nsIContent** aInstancePtrResult)
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{
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NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
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if (nsnull == aInstancePtrResult) {
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return NS_ERROR_NULL_POINTER;
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}
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nsIContent* it = new nsCommentNode();
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if (nsnull == it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return it->QueryInterface(NS_GET_IID(nsIContent), (void **) aInstancePtrResult);
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}
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nsCommentNode::nsCommentNode()
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{
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NS_INIT_REFCNT();
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mContentID = 0;
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}
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nsCommentNode::~nsCommentNode()
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{
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}
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// XPConnect interface list for nsCommentNode
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NS_CLASSINFO_MAP_BEGIN(Comment)
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NS_CLASSINFO_MAP_ENTRY(nsIDOMComment)
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NS_CLASSINFO_MAP_ENTRY(nsIDOMEventTarget)
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NS_CLASSINFO_MAP_ENTRY(nsIDOM3Node)
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NS_CLASSINFO_MAP_END
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// QueryInterface implementation for nsCommentNode
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NS_INTERFACE_MAP_BEGIN(nsCommentNode)
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NS_INTERFACE_MAP_ENTRY_DOM_DATA()
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NS_INTERFACE_MAP_ENTRY(nsITextContent)
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NS_INTERFACE_MAP_ENTRY(nsIDOMComment)
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NS_INTERFACE_MAP_ENTRY(nsIDOMCharacterData)
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NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(Comment)
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NS_INTERFACE_MAP_END
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NS_IMPL_ADDREF(nsCommentNode)
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NS_IMPL_RELEASE(nsCommentNode)
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NS_IMETHODIMP
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nsCommentNode::GetTag(nsIAtom*& aResult) const
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{
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aResult = nsLayoutAtoms::commentTagName;
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NS_ADDREF(aResult);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsCommentNode::GetNodeName(nsAWritableString& aNodeName)
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{
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aNodeName.Assign(NS_LITERAL_STRING("#comment"));
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return NS_OK;
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}
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NS_IMETHODIMP
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nsCommentNode::GetNodeType(PRUint16* aNodeType)
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{
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*aNodeType = (PRUint16)nsIDOMNode::COMMENT_NODE;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsCommentNode::CloneNode(PRBool aDeep, nsIDOMNode** aReturn)
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{
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nsresult result = NS_OK;
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nsCommentNode* it = new nsCommentNode();
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if (nsnull == it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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// XXX Increment the ref count before calling any
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// methods. If they do a QI and then a Release()
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// the instance will be deleted.
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result = it->QueryInterface(NS_GET_IID(nsIDOMNode), (void**) aReturn);
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if (NS_FAILED(result)) {
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return result;
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}
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nsAutoString data;
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result = GetData(data);
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if (NS_FAILED(result)) {
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NS_RELEASE(*aReturn);
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return result;
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}
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result = it->SetData(data);
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if (NS_FAILED(result)) {
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NS_RELEASE(*aReturn);
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return result;
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}
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return result;
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}
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NS_IMETHODIMP
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nsCommentNode::CloneContent(PRBool aCloneText, nsITextContent** aReturn)
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{
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nsresult result = NS_OK;
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nsCommentNode* it;
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NS_NEWXPCOM(it, nsCommentNode);
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if (nsnull == it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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result = it->QueryInterface(NS_GET_IID(nsITextContent), (void**) aReturn);
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if (NS_FAILED(result) || !aCloneText) {
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return result;
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}
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nsAutoString data;
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result = GetData(data);
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if (NS_FAILED(result)) {
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NS_RELEASE(*aReturn);
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return result;
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}
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result = it->SetData(data);
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if (NS_FAILED(result)) {
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NS_RELEASE(*aReturn);
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return result;
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}
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return result;
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}
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NS_IMETHODIMP
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nsCommentNode::List(FILE* out, PRInt32 aIndent) const
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{
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NS_PRECONDITION(nsnull != mInner.mDocument, "bad content");
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PRInt32 indx;
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for (indx = aIndent; --indx >= 0; ) fputs(" ", out);
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fprintf(out, "Comment@%p refcount=%d<!--", this, mRefCnt);
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nsAutoString tmp;
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mInner.ToCString(tmp, 0, mInner.mText.GetLength());
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fputs(tmp, out);
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fputs("-->\n", out);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsCommentNode::HandleDOMEvent(nsIPresContext* aPresContext,
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nsEvent* aEvent,
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nsIDOMEvent** aDOMEvent,
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PRUint32 aFlags,
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nsEventStatus* aEventStatus)
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{
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return mInner.HandleDOMEvent(aPresContext, aEvent, aDOMEvent,
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aFlags, aEventStatus);
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}
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// This would ideally be done by the parser, but for the sake
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// of "genericity" it's being done in the comment content code
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static void
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StripCommentDelimiters(nsString& aCommentString)
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{
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PRInt32 offset;
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static char* kCommentStart = "<!";
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static char* kCommentEnd = "->";
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static char* kCommentAlternateEnd = "--!>";
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static char kMinus = '-';
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offset = aCommentString.Find(kCommentStart);
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if (-1 != offset) {
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// Take up to 2 '-' characters
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offset += strlen(kCommentStart);
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if (kMinus == aCommentString.CharAt(offset)) {
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offset++;
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if (kMinus == aCommentString.CharAt(offset)) {
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offset++;
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}
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}
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aCommentString.Cut(0, offset);
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}
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offset = aCommentString.RFind(kCommentEnd);
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if (offset > 0) {
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// Take up to 1 more '-'
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if (kMinus == aCommentString.CharAt(offset-1)) {
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offset--;
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}
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aCommentString.Cut(offset, aCommentString.Length()-offset);
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}
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else {
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offset = aCommentString.RFind(kCommentAlternateEnd);
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if (-1 != offset) {
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aCommentString.Cut(offset, aCommentString.Length()-offset);
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}
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}
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}
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NS_IMETHODIMP
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nsCommentNode::SetText(const PRUnichar* aBuffer,
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PRInt32 aLength,
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PRBool aNotify)
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{
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nsAutoString str(aBuffer);
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StripCommentDelimiters(str);
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return mInner.SetText(this, str.GetUnicode(), str.Length(), aNotify);
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}
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NS_IMETHODIMP
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nsCommentNode::SetText(const nsAReadableString& aStr,
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PRBool aNotify)
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{
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nsAutoString str(aStr);
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StripCommentDelimiters(str);
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return mInner.SetText(this, str.GetUnicode(), str.Length(), aNotify);
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}
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NS_IMETHODIMP
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nsCommentNode::SetText(const char* aBuffer,
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PRInt32 aLength,
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PRBool aNotify)
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{
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nsAutoString str; str.AssignWithConversion(aBuffer);
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StripCommentDelimiters(str);
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return mInner.SetText(this, str.GetUnicode(), str.Length(), aNotify);
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}
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