pjs/editor/base/DeleteElementTxn.h

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2.2 KiB
C
Исходник Обычный вид История

/* -*- 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 1.1 (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 Netscape are
* Copyright (C) 1998-1999 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#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} }
/**
* A transaction that deletes a single element
*/
class DeleteElementTxn : public EditTxn
{
public:
static const nsIID& GetCID() { static nsIID iid = DELETE_ELEMENT_TXN_CID; return iid; }
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/** initialize the transaction.
* @param aElement the node to delete
*/
NS_IMETHOD Init(nsIDOMNode *aElement);
private:
DeleteElementTxn();
public:
virtual ~DeleteElementTxn();
NS_IMETHOD Do(void);
NS_IMETHOD Undo(void);
NS_IMETHOD Redo(void);
NS_IMETHOD Merge(PRBool *aDidMerge, nsITransaction *aTransaction);
NS_IMETHOD Write(nsIOutputStream *aOutputStream);
NS_IMETHOD GetUndoString(nsString *aString);
NS_IMETHOD GetRedoString(nsString *aString);
enum { kTransactionID = 11160 };
protected:
/** the element to delete */
nsCOMPtr<nsIDOMNode> mElement;
/** the node into which the new node will be inserted */
nsCOMPtr<nsIDOMNode> mParent;
/** the index in mParent for the new node */
PRUint32 mOffsetInParent;
/** the node we will insert mNewNode before. We compute this ourselves. */
nsCOMPtr<nsIDOMNode> mRefNode;
friend class TransactionFactory;
};
#endif