зеркало из https://github.com/mozilla/pjs.git
120 строки
2.8 KiB
C++
120 строки
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
|
|
#include "InsertElementTxn.h"
|
|
|
|
#ifdef NS_DEBUG
|
|
static PRBool gNoisy = PR_FALSE;
|
|
#else
|
|
static const PRBool gNoisy = PR_FALSE;
|
|
#endif
|
|
|
|
|
|
InsertElementTxn::InsertElementTxn()
|
|
: EditTxn()
|
|
{
|
|
}
|
|
|
|
nsresult InsertElementTxn::Init(nsIDOMNode *aNode,
|
|
nsIDOMNode *aParent,
|
|
PRInt32 aOffset)
|
|
{
|
|
if (!aNode || !aParent)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
mNode = do_QueryInterface(aNode);
|
|
mParent = do_QueryInterface(aParent);
|
|
mOffset = aOffset;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
InsertElementTxn::~InsertElementTxn()
|
|
{
|
|
}
|
|
|
|
nsresult InsertElementTxn::Do(void)
|
|
{
|
|
if (!mNode || !mParent)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsresult result;
|
|
nsCOMPtr<nsIDOMNode>refNode;
|
|
if (0!=mOffset)
|
|
{ // get a ref node
|
|
PRInt32 i=0;
|
|
result = mParent->GetFirstChild(getter_AddRefs(refNode));
|
|
for (; i<mOffset; i++)
|
|
{
|
|
nsCOMPtr<nsIDOMNode>nextSib;
|
|
result = refNode->GetNextSibling(getter_AddRefs(nextSib));
|
|
if (NS_FAILED(result)) {
|
|
break; // couldn't get a next sibling, so make aNode the first child
|
|
}
|
|
refNode = do_QueryInterface(nextSib);
|
|
if (!refNode) {
|
|
break; // couldn't get a next sibling, so make aNode the first child
|
|
}
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIDOMNode> resultNode;
|
|
result = mParent->InsertBefore(mNode, refNode, getter_AddRefs(resultNode));
|
|
return result;
|
|
}
|
|
|
|
nsresult InsertElementTxn::Undo(void)
|
|
{
|
|
if (!mNode || !mParent)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsCOMPtr<nsIDOMNode> resultNode;
|
|
nsresult result = mParent->RemoveChild(mNode, getter_AddRefs(resultNode));
|
|
return result;
|
|
}
|
|
|
|
nsresult InsertElementTxn::Merge(PRBool *aDidMerge, nsITransaction *aTransaction)
|
|
{
|
|
if (nsnull!=aDidMerge)
|
|
*aDidMerge=PR_FALSE;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult InsertElementTxn::Write(nsIOutputStream *aOutputStream)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult InsertElementTxn::GetUndoString(nsString **aString)
|
|
{
|
|
if (nsnull!=aString)
|
|
{
|
|
**aString="Remove Element: ";
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult InsertElementTxn::GetRedoString(nsString **aString)
|
|
{
|
|
if (nsnull!=aString)
|
|
{
|
|
**aString="Insert Element: ";
|
|
}
|
|
return NS_OK;
|
|
}
|