зеркало из https://github.com/mozilla/pjs.git
153 строки
4.2 KiB
C++
153 строки
4.2 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"
|
|
#include "nsIDOMSelection.h"
|
|
#include "nsIContent.h"
|
|
|
|
#ifdef NS_DEBUG
|
|
static PRBool gNoisy = PR_FALSE;
|
|
#else
|
|
static const PRBool gNoisy = PR_FALSE;
|
|
#endif
|
|
|
|
|
|
InsertElementTxn::InsertElementTxn()
|
|
: EditTxn()
|
|
{
|
|
}
|
|
|
|
NS_IMETHODIMP InsertElementTxn::Init(nsIDOMNode *aNode,
|
|
nsIDOMNode *aParent,
|
|
PRInt32 aOffset,
|
|
nsIEditor *aEditor)
|
|
{
|
|
NS_ASSERTION(aNode && aParent && aEditor, "bad arg");
|
|
if (!aNode || !aParent || !aEditor)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
mNode = do_QueryInterface(aNode);
|
|
mParent = do_QueryInterface(aParent);
|
|
mOffset = aOffset;
|
|
mEditor = aEditor;
|
|
if (!mNode || !mParent || !mEditor)
|
|
return NS_ERROR_INVALID_ARG;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
InsertElementTxn::~InsertElementTxn()
|
|
{
|
|
}
|
|
|
|
NS_IMETHODIMP InsertElementTxn::Do(void)
|
|
{
|
|
if (gNoisy)
|
|
{
|
|
nsCOMPtr<nsIContent>nodeAsContent = do_QueryInterface(mNode);
|
|
nsCOMPtr<nsIContent>parentAsContent = do_QueryInterface(mParent);
|
|
nsString namestr;
|
|
mNode->GetNodeName(namestr);
|
|
char* nodename = namestr.ToNewCString();
|
|
printf("%p Do Insert Element of %p <%s> into parent %p at offset %d\n",
|
|
this, nodeAsContent.get(), nodename,
|
|
parentAsContent.get(), mOffset);
|
|
nsAllocator::Free(nodename);
|
|
}
|
|
|
|
if (!mNode || !mParent) return NS_ERROR_NOT_INITIALIZED;
|
|
|
|
nsresult result;
|
|
nsCOMPtr<nsIDOMNode>refNode;
|
|
//if (0!=mOffset)
|
|
{ // get a ref node
|
|
PRInt32 i=0;
|
|
result = mParent->GetFirstChild(getter_AddRefs(refNode));
|
|
if (NS_SUCCEEDED(result) && 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));
|
|
if (NS_FAILED(result)) return result;
|
|
if (!resultNode) return NS_ERROR_NULL_POINTER;
|
|
|
|
nsCOMPtr<nsIDOMSelection> selection;
|
|
result = mEditor->GetSelection(getter_AddRefs(selection));
|
|
if (NS_FAILED(result)) return result;
|
|
if (!selection) return NS_ERROR_NULL_POINTER;
|
|
// place the selection just after the inserted element
|
|
selection->Collapse(mParent, mOffset+1);
|
|
//selection->Extend(mParent, mOffset+1);
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP InsertElementTxn::Undo(void)
|
|
{
|
|
if (gNoisy) { printf("%p Undo Insert Element of %p into parent %p at offset %d\n",
|
|
this, mNode.get(), mParent.get(), mOffset); }
|
|
if (!mNode || !mParent) return NS_ERROR_NOT_INITIALIZED;
|
|
|
|
nsCOMPtr<nsIDOMNode> resultNode;
|
|
nsresult result = mParent->RemoveChild(mNode, getter_AddRefs(resultNode));
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP InsertElementTxn::Merge(PRBool *aDidMerge, nsITransaction *aTransaction)
|
|
{
|
|
if (nsnull!=aDidMerge)
|
|
*aDidMerge=PR_FALSE;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP InsertElementTxn::Write(nsIOutputStream *aOutputStream)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP InsertElementTxn::GetUndoString(nsString *aString)
|
|
{
|
|
if (nsnull!=aString)
|
|
{
|
|
*aString="Remove Element: ";
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP InsertElementTxn::GetRedoString(nsString *aString)
|
|
{
|
|
if (nsnull!=aString)
|
|
{
|
|
*aString="Insert Element: ";
|
|
}
|
|
return NS_OK;
|
|
}
|