mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-31 06:05:44 +00:00
97 lines
2.8 KiB
C++
97 lines
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 1.0 (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 SplitElementTxn_h__
|
|
#define SplitElementTxn_h__
|
|
|
|
#include "EditTxn.h"
|
|
#include "nsIDOMNode.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsIEditor.h"
|
|
|
|
#define SPLIT_ELEMENT_TXN_CID \
|
|
{/* 690c6290-ac48-11d2-86d8-000064657374 */ \
|
|
0x690c6290, 0xac48, 0x11d2, \
|
|
{0x86, 0xd8, 0x0, 0x0, 0x64, 0x65, 0x73, 0x74} }
|
|
|
|
/**
|
|
* A transaction that splits an element E into two identical nodes, E1 and E2
|
|
* with the children of E divided between E1 and E2.
|
|
*/
|
|
class SplitElementTxn : public EditTxn
|
|
{
|
|
public:
|
|
|
|
static const nsIID& GetCID() { static nsIID iid = SPLIT_ELEMENT_TXN_CID; return iid; }
|
|
|
|
/** initialize the transaction.
|
|
* @param aEditor the provider of core editing operations
|
|
* @param aNode the node to split
|
|
* @param aOffset the location within aNode to do the split.
|
|
* aOffset may refer to children of aNode, or content of aNode.
|
|
* The left node will have child|content 0..aOffset-1.
|
|
*/
|
|
NS_IMETHOD Init (nsIEditor *aEditor,
|
|
nsIDOMNode *aNode,
|
|
PRInt32 aOffset);
|
|
protected:
|
|
SplitElementTxn();
|
|
|
|
public:
|
|
virtual ~SplitElementTxn();
|
|
|
|
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);
|
|
|
|
NS_IMETHOD GetNewNode(nsIDOMNode **aNewNode);
|
|
|
|
protected:
|
|
|
|
/** the element to operate upon */
|
|
nsCOMPtr<nsIDOMNode> mExistingRightNode;
|
|
|
|
/** the offset into mElement where the children of mElement are split.<BR>
|
|
* mOffset is the index of the first child in the right node.
|
|
* -1 means the new node gets no children.
|
|
*/
|
|
PRInt32 mOffset;
|
|
|
|
/** the element we create when splitting mElement */
|
|
nsCOMPtr<nsIDOMNode> mNewLeftNode;
|
|
|
|
/** the parent shared by mExistingRightNode and mNewLeftNode */
|
|
nsCOMPtr<nsIDOMNode> mParent;
|
|
nsIEditor* mEditor;
|
|
|
|
friend class TransactionFactory;
|
|
|
|
};
|
|
|
|
#endif
|