зеркало из https://github.com/mozilla/pjs.git
101 строка
2.8 KiB
C++
101 строка
2.8 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 1.1 (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 JoinElementTxn_h__
|
|
#define JoinElementTxn_h__
|
|
|
|
#include "EditTxn.h"
|
|
#include "nsIDOMNode.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsIEditor.h"
|
|
|
|
#define JOIN_ELEMENT_TXN_CID \
|
|
{/* 9bc5f9f0-ac48-11d2-86d8-000064657374 */ \
|
|
0x9bc5f9f0, 0xac48, 0x11d2, \
|
|
{0x86, 0xd8, 0x0, 0x0, 0x64, 0x65, 0x73, 0x74} }
|
|
|
|
class nsEditor;
|
|
|
|
/**
|
|
* A transaction that joins two elements E1 (left node) and E2 (right node)
|
|
* into a single node E.
|
|
* The children of E are the children of E1 followed by the children of E2.
|
|
* After DoTransaction() and RedoTransaction(), E1 is removed from the content
|
|
* tree and E2 remains.
|
|
*/
|
|
class JoinElementTxn : public EditTxn
|
|
{
|
|
public:
|
|
|
|
static const nsIID& GetCID() { static nsIID iid = JOIN_ELEMENT_TXN_CID; return iid; }
|
|
|
|
/** initialize the transaction
|
|
* @param aEditor the provider of core editing operations
|
|
* @param aLeftNode the first of two nodes to join
|
|
* @param aRightNode the second of two nodes to join
|
|
*/
|
|
NS_IMETHOD Init(nsEditor *aEditor,
|
|
nsIDOMNode *aLeftNode,
|
|
nsIDOMNode *aRightNode);
|
|
protected:
|
|
JoinElementTxn();
|
|
|
|
public:
|
|
|
|
virtual ~JoinElementTxn();
|
|
|
|
NS_IMETHOD DoTransaction(void);
|
|
|
|
NS_IMETHOD UndoTransaction(void);
|
|
|
|
// NS_IMETHOD RedoTransaction(void);
|
|
|
|
NS_IMETHOD GetIsTransient(PRBool *aIsTransient);
|
|
|
|
NS_IMETHOD Merge(nsITransaction *aTransaction, PRBool *aDidMerge);
|
|
|
|
NS_IMETHOD GetTxnDescription(nsAWritableString& aTxnDescription);
|
|
|
|
protected:
|
|
|
|
/** the elements to operate upon.
|
|
* After the merge, mRightNode remains and mLeftNode is removed from the content tree.
|
|
*/
|
|
nsCOMPtr<nsIDOMNode> mLeftNode;
|
|
nsCOMPtr<nsIDOMNode> mRightNode;
|
|
|
|
/** the offset into mNode where the children of mElement are split (for undo).<BR>
|
|
* mOffset is the index of the first child in the right node.
|
|
* -1 means the left node had no children.
|
|
*/
|
|
PRUint32 mOffset;
|
|
|
|
/** the parent node containing mLeftNode and mRightNode */
|
|
nsCOMPtr<nsIDOMNode> mParent;
|
|
nsEditor* mEditor;
|
|
|
|
friend class TransactionFactory;
|
|
|
|
};
|
|
|
|
#endif
|