mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-06 09:05:45 +00:00
90 lines
2.4 KiB
C++
90 lines
2.4 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.
|
|
*/
|
|
|
|
#ifndef DeleteTextTxn_h__
|
|
#define DeleteTextTxn_h__
|
|
|
|
#include "EditTxn.h"
|
|
#include "nsIEditor.h"
|
|
#include "nsIDOMCharacterData.h"
|
|
#include "nsCOMPtr.h"
|
|
|
|
#define DELETE_TEXT_TXN_IID \
|
|
{/* 4d3a2720-ac49-11d2-86d8-000064657374 */ \
|
|
0x4d3a2720, 0xac49, 0x11d2, \
|
|
{0x86, 0xd8, 0x0, 0x0, 0x64, 0x65, 0x73, 0x74} }
|
|
|
|
/**
|
|
* A transaction that removes text from a content node.
|
|
*/
|
|
class DeleteTextTxn : public EditTxn
|
|
{
|
|
public:
|
|
|
|
/** 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);
|
|
|
|
private:
|
|
DeleteTextTxn();
|
|
|
|
public:
|
|
virtual ~DeleteTextTxn();
|
|
|
|
NS_IMETHOD Do(void);
|
|
|
|
NS_IMETHOD Undo(void);
|
|
|
|
NS_IMETHOD Merge(PRBool *aDidMerge, nsITransaction *aTransaction);
|
|
|
|
NS_IMETHOD Write(nsIOutputStream *aOutputStream);
|
|
|
|
NS_IMETHOD GetUndoString(nsString **aString);
|
|
|
|
NS_IMETHOD GetRedoString(nsString **aString);
|
|
|
|
protected:
|
|
|
|
/** the provider of basic editing operations */
|
|
nsCOMPtr<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;
|
|
|
|
friend class TransactionFactory;
|
|
|
|
};
|
|
|
|
#endif
|