зеркало из https://github.com/mozilla/pjs.git
113 строки
3.6 KiB
C++
113 строки
3.6 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 DeleteTextTxn_h__
|
|
#define DeleteTextTxn_h__
|
|
|
|
#include "EditTxn.h"
|
|
#include "nsIEditor.h"
|
|
#include "nsIDOMCharacterData.h"
|
|
#include "nsCOMPtr.h"
|
|
|
|
#define DELETE_TEXT_TXN_CID \
|
|
{/* 4d3a2720-ac49-11d2-86d8-000064657374 */ \
|
|
0x4d3a2720, 0xac49, 0x11d2, \
|
|
{0x86, 0xd8, 0x0, 0x0, 0x64, 0x65, 0x73, 0x74} }
|
|
|
|
class nsRangeUpdater;
|
|
|
|
/**
|
|
* A transaction that removes text from a content node.
|
|
*/
|
|
class DeleteTextTxn : public EditTxn
|
|
{
|
|
public:
|
|
|
|
static const nsIID& GetCID() { static const nsIID iid = DELETE_TEXT_TXN_CID; return iid; }
|
|
|
|
/** initialize the transaction.
|
|
* @param aEditor the provider of basic editing operations
|
|
* @param aElement the content node to remove text from
|
|
* @param aOffset the location in aElement to begin the deletion
|
|
* @param aNumCharsToDelete the number of characters to delete. Not the number of bytes!
|
|
*/
|
|
NS_IMETHOD Init(nsIEditor *aEditor,
|
|
nsIDOMCharacterData *aElement,
|
|
PRUint32 aOffset,
|
|
PRUint32 aNumCharsToDelete,
|
|
nsRangeUpdater *aRangeUpdater);
|
|
|
|
private:
|
|
DeleteTextTxn();
|
|
|
|
public:
|
|
virtual ~DeleteTextTxn();
|
|
|
|
NS_IMETHOD DoTransaction(void);
|
|
|
|
NS_IMETHOD UndoTransaction(void);
|
|
|
|
NS_IMETHOD Merge(nsITransaction *aTransaction, PRBool *aDidMerge);
|
|
|
|
NS_IMETHOD GetTxnDescription(nsAString& aTxnDescription);
|
|
|
|
protected:
|
|
|
|
/** the provider of basic editing operations */
|
|
nsIEditor* mEditor;
|
|
|
|
/** the text element to operate upon */
|
|
nsCOMPtr<nsIDOMCharacterData> mElement;
|
|
|
|
/** the offset into mElement where the deletion is to take place */
|
|
PRUint32 mOffset;
|
|
|
|
/** the number of characters to delete */
|
|
PRUint32 mNumCharsToDelete;
|
|
|
|
/** the text that was deleted */
|
|
nsString mDeletedText;
|
|
|
|
/** range updater object */
|
|
nsRangeUpdater *mRangeUpdater;
|
|
|
|
friend class TransactionFactory;
|
|
|
|
};
|
|
|
|
#endif
|