RetroZilla/editor/libeditor/base/DeleteElementTxn.h
2015-10-20 23:03:22 -04:00

103 lines
3.0 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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):
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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 MPL, 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 MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef DeleteElementTxn_h__
#define DeleteElementTxn_h__
#include "EditTxn.h"
#include "nsIDOMNode.h"
#include "nsCOMPtr.h"
#define DELETE_ELEMENT_TXN_CID \
{/* 6fd77770-ac49-11d2-86d8-000064657374 */ \
0x6fd77770, 0xac49, 0x11d2, \
{0x86, 0xd8, 0x0, 0x0, 0x64, 0x65, 0x73, 0x74} }
class nsRangeUpdater;
/**
* A transaction that deletes a single element
*/
class DeleteElementTxn : public EditTxn
{
public:
static const nsIID& GetCID() { static const nsIID iid = DELETE_ELEMENT_TXN_CID; return iid; }
/** initialize the transaction.
* @param aElement the node to delete
*/
NS_IMETHOD Init(nsIDOMNode *aElement, nsRangeUpdater *aRangeUpdater);
private:
DeleteElementTxn();
public:
virtual ~DeleteElementTxn();
NS_IMETHOD DoTransaction(void);
NS_IMETHOD UndoTransaction(void);
NS_IMETHOD RedoTransaction(void);
NS_IMETHOD Merge(nsITransaction *aTransaction, PRBool *aDidMerge);
NS_IMETHOD GetTxnDescription(nsAString& aTxnDescription);
protected:
/** the element to delete */
nsCOMPtr<nsIDOMNode> mElement;
/** parent of node to delete */
nsCOMPtr<nsIDOMNode> mParent;
/** next sibling to remember for undo/redo purposes */
nsCOMPtr<nsIDOMNode> mRefNode;
/** range updater object */
nsRangeUpdater *mRangeUpdater;
friend class TransactionFactory;
};
#endif