gecko-dev/editor/libeditor/base/EditTxn.cpp

125 lines
3.4 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998-1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
*
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the NPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "EditTxn.h"
#include "nsCOMPtr.h"
#include "nsIDOMNode.h"
#include "nsIDOMNodeList.h"
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
static NS_DEFINE_IID(kITransactionIID, NS_ITRANSACTION_IID);
NS_IMPL_ADDREF(EditTxn)
NS_IMPL_RELEASE(EditTxn)
// note that aEditor is not refcounted
EditTxn::EditTxn()
{
NS_INIT_REFCNT();
}
EditTxn::~EditTxn()
{
}
NS_IMETHODIMP EditTxn::DoTransaction(void)
{
return NS_OK;
}
NS_IMETHODIMP EditTxn::UndoTransaction(void)
{
return NS_OK;
}
NS_IMETHODIMP EditTxn::RedoTransaction(void)
{
return DoTransaction();
}
NS_IMETHODIMP EditTxn::GetIsTransient(PRBool *aIsTransient)
{
if (nsnull!=aIsTransient)
*aIsTransient = PR_FALSE;
return NS_OK;
}
NS_IMETHODIMP EditTxn::Merge(nsITransaction *aTransaction, PRBool *aDidMerge)
{
return NS_OK;
}
NS_IMETHODIMP EditTxn::GetTxnDescription(nsAWritableString& aString)
{
aString.Assign(NS_LITERAL_STRING("EditTxn"));
return NS_OK;
}
NS_IMETHODIMP
EditTxn::QueryInterface(REFNSIID aIID, void** aInstancePtr)
{
if (NULL == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
}
if (aIID.Equals(kISupportsIID)) {
nsITransaction *tmp = this;
nsISupports *tmp2 = tmp;
*aInstancePtr = (void*)(nsISupports*)tmp2;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(kITransactionIID)) {
*aInstancePtr = (void*)(nsITransaction*)this;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsPIEditorTransaction))) {
*aInstancePtr = (void*)(nsPIEditorTransaction*)this;
NS_ADDREF_THIS();
return NS_OK;
}
*aInstancePtr = 0;
return NS_NOINTERFACE;
}