зеркало из https://github.com/mozilla/gecko-dev.git
96 строки
2.8 KiB
C++
96 строки
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) 1998-1999 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
|
|
#ifndef AggregatePlaceholderTxn_h__
|
|
#define AggregatePlaceholderTxn_h__
|
|
|
|
#include "EditAggregateTxn.h"
|
|
#include "nsIAbsorbingTransaction.h"
|
|
#include "nsIDOMNode.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsWeakPtr.h"
|
|
#include "nsWeakReference.h"
|
|
|
|
#define PLACEHOLDER_TXN_CID \
|
|
{/* {0CE9FB00-D9D1-11d2-86DE-000064657374} */ \
|
|
0x0CE9FB00, 0xD9D1, 0x11d2, \
|
|
{0x86, 0xde, 0x0, 0x0, 0x64, 0x65, 0x73, 0x74} }
|
|
|
|
class nsHTMLEditor;
|
|
|
|
/**
|
|
* An aggregate transaction that knows how to absorb all subsequent
|
|
* transactions with the same name. This transaction does not "Do" anything.
|
|
* But it absorbs other transactions via merge, and can undo/redo the
|
|
* transactions it has absorbed.
|
|
*/
|
|
|
|
class PlaceholderTxn : public EditAggregateTxn,
|
|
public nsIAbsorbingTransaction,
|
|
public nsSupportsWeakReference
|
|
{
|
|
public:
|
|
|
|
static const nsIID& GetCID() { static nsIID iid = PLACEHOLDER_TXN_CID; return iid; }
|
|
|
|
NS_DECL_ISUPPORTS_INHERITED
|
|
|
|
private:
|
|
PlaceholderTxn();
|
|
|
|
public:
|
|
|
|
virtual ~PlaceholderTxn();
|
|
|
|
// ------------ EditAggregateTxn -----------------------
|
|
|
|
NS_IMETHOD Do(void);
|
|
|
|
NS_IMETHOD Undo(void);
|
|
|
|
NS_IMETHOD Merge(PRBool *aDidMerge, nsITransaction *aTransaction);
|
|
|
|
// ------------ nsIAbsorbingTransaction -----------------------
|
|
|
|
NS_IMETHOD Init(nsWeakPtr aPresShellWeak, nsIAtom *aName, nsIDOMNode *aStartNode, PRInt32 aStartOffset);
|
|
|
|
NS_IMETHOD GetTxnName(nsIAtom **aName);
|
|
|
|
NS_IMETHOD GetStartNodeAndOffset(nsCOMPtr<nsIDOMNode> *aTxnStartNode, PRInt32 *aTxnStartOffset);
|
|
|
|
NS_IMETHOD EndPlaceHolderBatch();
|
|
|
|
NS_IMETHOD ForwardEndBatchTo(nsIAbsorbingTransaction *aForwardingAddress);
|
|
|
|
friend class TransactionFactory;
|
|
|
|
enum { kTransactionID = 11260 };
|
|
|
|
protected:
|
|
|
|
/** the presentation shell, which we'll need to get the selection */
|
|
nsWeakPtr mPresShellWeak; // weak reference to the nsIPresShell
|
|
PRBool mAbsorb;
|
|
nsCOMPtr<nsIDOMNode> mStartNode, mEndNode; // selection nodes at beginning and end of operation
|
|
PRInt32 mStartOffset, mEndOffset; // selection offsets at beginning and end of operation
|
|
nsWeakPtr mForwarding;
|
|
};
|
|
|
|
|
|
#endif
|