зеркало из https://github.com/mozilla/pjs.git
112 строки
2.8 KiB
C++
112 строки
2.8 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 "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "SplitElementTxn.h"
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#include "editor.h"
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#include "nsIDOMNode.h"
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#include "nsIDOMElement.h"
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// note that aEditor is not refcounted
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SplitElementTxn::SplitElementTxn(nsEditor *aEditor,
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nsIDOMNode *aNode,
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PRInt32 aOffset)
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: EditTxn(aEditor)
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{
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mNode = aNode;
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NS_ADDREF(mNode);
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mOffset = aOffset;
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mNewNode = nsnull;
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mParent = nsnull;
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}
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SplitElementTxn::~SplitElementTxn()
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{
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NS_IF_RELEASE(mNode);
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NS_IF_RELEASE(mNewNode);
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NS_IF_RELEASE(mParent);
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}
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nsresult SplitElementTxn::Do(void)
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{
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// create a new node
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nsresult result = mNode->CloneNode(PR_FALSE, &mNewNode);
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NS_ASSERTION(((NS_SUCCEEDED(result)) && (nsnull!=mNewNode)), "could not create element.");
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if ((NS_SUCCEEDED(result)) && (nsnull!=mNewNode))
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{
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// get the parent node
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result = mNode->GetParentNode(&mParent);
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// insert the new node
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if ((NS_SUCCEEDED(result)) && (nsnull!=mParent))
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{
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result = mEditor->SplitNode(mNode, mOffset, mNewNode, mParent);
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}
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}
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return result;
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}
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nsresult SplitElementTxn::Undo(void)
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{
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// this assumes Do inserted the new node in front of the prior existing node
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nsresult result = mEditor->JoinNodes(mNode, mNewNode, mParent, PR_FALSE);
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return result;
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}
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nsresult SplitElementTxn::Redo(void)
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{
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nsresult result = mEditor->SplitNode(mNode, mOffset, mNewNode, mParent);
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return result;
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}
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nsresult SplitElementTxn::GetIsTransient(PRBool *aIsTransient)
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{
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if (nsnull!=aIsTransient)
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*aIsTransient = PR_FALSE;
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return NS_OK;
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}
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nsresult SplitElementTxn::Merge(PRBool *aDidMerge, nsITransaction *aTransaction)
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{
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if (nsnull!=aDidMerge)
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*aDidMerge=PR_FALSE;
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return NS_OK;
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}
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nsresult SplitElementTxn::Write(nsIOutputStream *aOutputStream)
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{
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return NS_OK;
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}
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nsresult SplitElementTxn::GetUndoString(nsString **aString)
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{
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if (nsnull!=aString)
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{
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**aString="Join Element";
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}
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return NS_OK;
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}
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nsresult SplitElementTxn::GetRedoString(nsString **aString)
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{
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if (nsnull!=aString)
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{
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**aString="Split Element";
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}
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return NS_OK;
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}
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