508 lines
15 KiB
C++
508 lines
15 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 License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* 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 Copyright (C) 1998
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* Netscape Communications Corporation. All Rights Reserved.
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*/
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#include "nsIDOMComment.h"
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#include "nsGenericDOMDataNode.h"
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#include "nsIScriptObjectOwner.h"
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#include "nsIDOMEventReceiver.h"
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#include "nsIContent.h"
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#include "nsFrame.h"
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#include "nsLayoutAtoms.h"
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#include "nsIDOMSelection.h"
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#include "nsXIFConverter.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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static NS_DEFINE_IID(kIDOMCommentIID, NS_IDOMCOMMENT_IID);
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static NS_DEFINE_IID(kIEnumeratorIID, NS_IENUMERATOR_IID);
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static NS_DEFINE_IID(kITextContentIID, NS_ITEXT_CONTENT_IID);
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class nsCommentNode : public nsIDOMComment,
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public nsIScriptObjectOwner,
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public nsIDOMEventReceiver,
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public nsIContent,
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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_IDOMNODE_USING_GENERIC_DOM_DATA(mInner)
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// nsIDOMCharacterData
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NS_IMPL_IDOMCHARACTERDATA_USING_GENERIC_DOM_DATA(mInner)
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// nsIDOMComment
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// nsIScriptObjectOwner
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NS_IMPL_ISCRIPTOBJECTOWNER_USING_GENERIC_DOM_DATA(mInner)
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// nsIDOMEventReceiver
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NS_IMPL_IDOMEVENTRECEIVER_USING_GENERIC_DOM_DATA(mInner)
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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) {
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return mInner.SetDocument(aDocument, aDeep);
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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) {
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return mInner.InsertChildAt(aKid, aIndex, aNotify);
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}
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NS_IMETHOD ReplaceChildAt(nsIContent* aKid, PRInt32 aIndex,
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PRBool aNotify) {
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return mInner.ReplaceChildAt(aKid, aIndex, aNotify);
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}
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NS_IMETHOD AppendChildTo(nsIContent* aKid, PRBool aNotify) {
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return mInner.AppendChildTo(aKid, aNotify);
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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 IsSynthetic(PRBool& aResult) {
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return mInner.IsSynthetic(aResult);
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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 ParseAttributeString(const nsString& aStr,
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nsIAtom*& aName,
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PRInt32& aNameSpaceID) {
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return mInner.ParseAttributeString(aStr, aName, aNameSpaceID);
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}
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NS_IMETHOD GetNameSpacePrefixFromId(PRInt32 aNameSpaceID,
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nsIAtom*& aPrefix) {
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return mInner.GetNameSpacePrefixFromId(aNameSpaceID, aPrefix);
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}
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NS_IMETHOD GetAttribute(PRInt32 aNameSpaceID, nsIAtom *aAttribute,
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nsString &aResult) const {
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return mInner.GetAttribute(aNameSpaceID, aAttribute, aResult);
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}
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NS_IMETHOD SetAttribute(PRInt32 aNameSpaceID, nsIAtom* aAttribute,
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const nsString& aValue, PRBool aNotify) {
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return mInner.SetAttribute(aNameSpaceID, aAttribute, 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) const {
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return mInner.GetAttributeNameAt(aIndex, aNameSpaceID, aName);
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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 BeginConvertToXIF(nsXIFConverter& aConverter) const {
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return mInner.BeginConvertToXIF(aConverter);
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}
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NS_IMETHOD ConvertContentToXIF(nsXIFConverter& aConverter) const;
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NS_IMETHOD FinishConvertToXIF(nsXIFConverter& aConverter) const {
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return mInner.FinishConvertToXIF(aConverter);
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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 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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PRInt32& aNumFragmentsResult)
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{ return mInner.GetText(aFragmentsResult, aNumFragmentsResult); }
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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(nsString& 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 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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protected:
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nsGenericDOMDataNode mInner;
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PRUint32 mContentID;
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};
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nsresult NS_NewCommentNode(nsIContent** aInstancePtrResult);
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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(kIContentIID, (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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mInner.Init(this);
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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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NS_IMPL_ADDREF(nsCommentNode)
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NS_IMPL_RELEASE(nsCommentNode)
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NS_IMETHODIMP
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nsCommentNode::QueryInterface(REFNSIID aIID, void** aInstancePtr)
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{
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NS_IMPL_DOM_DATA_QUERY_INTERFACE(aIID, aInstancePtr, this)
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if (aIID.Equals(kIDOMCommentIID)) {
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nsIDOMComment* tmp = this;
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*aInstancePtr = (void*) tmp;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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if (aIID.Equals(kITextContentIID)) {
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nsITextContent* tmp = this;
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*aInstancePtr = (void*) tmp;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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return NS_NOINTERFACE;
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}
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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(nsString& aNodeName)
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{
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aNodeName.SetString("#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(kIDOMNodeIID, (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::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 refcount=%d<!--", 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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nsresult NS_NewCommentFrame(nsIFrame*& aResult);
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nsresult
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NS_NewCommentFrame(nsIFrame*& aResult)
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{
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nsIFrame* frame;
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NS_NewEmptyFrame(&frame);
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if (nsnull == frame) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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aResult = frame;
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return NS_OK;
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}
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/**
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* Translate the content object into the (XIF) XML Interchange Format
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* XIF is an intermediate form of the content model, the buffer
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* will then be parsed into any number of formats including HTML, TXT, etc.
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*/
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nsresult
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nsCommentNode::ConvertContentToXIF(nsXIFConverter& aConverter) const
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{
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const nsIContent* content = this;
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nsIDOMSelection* sel = aConverter.GetSelection();
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nsIDocument* document;
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nsresult res;
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res = GetDocument(document);
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if (!NS_SUCCEEDED(res))
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return res;
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const nsTextFragment* textFrag;
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PRInt32 numFragments;
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// XXX This method is const, but GetText() isn't,
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// XXX so cast away the constness of mInner:
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nsGenericDOMDataNode* inner = (nsGenericDOMDataNode*)&mInner;
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res = inner->GetText(textFrag, numFragments);
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if (!NS_SUCCEEDED(res))
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return res;
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#ifdef DEBUG_akkana
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if (numFragments == 0)
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printf("numFragments is zero! Go figure!\n");
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#endif
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if (sel != nsnull && document->IsInSelection(sel,content))
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{
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nsIEnumerator *enumerator;
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if (NS_SUCCEEDED(sel->QueryInterface(kIEnumeratorIID, (void **)&enumerator))) {
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for (enumerator->First();NS_OK != enumerator->IsDone(); enumerator->Next()) {
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nsIDOMRange* range = nsnull;
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if (NS_SUCCEEDED(enumerator->CurrentItem((nsISupports**)&range))) {
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nsCOMPtr<nsIDOMNode> startNode;
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nsCOMPtr<nsIDOMNode> endNode;
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PRInt32 startOffset = 0;
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PRInt32 endOffset = 0;
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range->GetStartParent(getter_AddRefs(startNode));
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range->GetEndParent(getter_AddRefs(endNode));
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range->GetStartOffset(&startOffset);
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range->GetEndOffset(&endOffset);
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nsCOMPtr<nsIContent> startContent;
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nsCOMPtr<nsIContent> endContent;
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startContent = do_QueryInterface(startNode);
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endContent = do_QueryInterface(endNode);
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nsString buffer;
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textFrag->AppendTo(buffer);
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if (startContent.get() == content || endContent.get() == content)
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{
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// NOTE: ORDER MATTERS!
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// This must go before the Cut
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if (endContent.get() == content)
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buffer.Truncate(endOffset);
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// This must go after the Trunctate
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if (startContent.get() == content)
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buffer.Cut(0,startOffset);
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}
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aConverter.AddContentComment(buffer);
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}
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}
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}
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}
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else
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{
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nsString buffer;
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textFrag->AppendTo(buffer);
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aConverter.AddContentComment(buffer);
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}
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NS_IF_RELEASE(document);
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// XXX Possible mem leak: Do we need to delete textFrag?
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return NS_OK;
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}
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#if 0
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nsresult
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nsCommentNode::BeginConvertToXIF(nsXIFConverter& aConverter) const
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{
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return NS_OK;
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}
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nsresult
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nsCommentNode::FinishConvertToXIF(nsXIFConverter& aConverter) const
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{
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return NS_OK;
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}
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#endif
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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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offset += strlen(kCommentStart);
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if (-1 != offset) {
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// Take up to 2 '-' characters
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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 (-1 != offset) {
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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(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(aBuffer);
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StripCommentDelimiters(str);
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return mInner.SetText(str.GetUnicode(), str.Length(), aNotify);
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}
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