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d5932338f7
and merges in subsequent transactions indiscriminately until it's told to stop. It also gives the last transaction in its child list a chance to merge the next transaction. All this is in support of complex transactions that result in text insertion being able to collapse into a single undoable event. Also improved tracking of bogus content node used when document is empty.
68 lines
1.7 KiB
C++
68 lines
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef AggregatePlaceholderTxn_h__
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#define AggregatePlaceholderTxn_h__
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#include "EditAggregateTxn.h"
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#define PLACEHOLDER_TXN_IID \
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{/* {0CE9FB00-D9D1-11d2-86DE-000064657374} */ \
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0x0CE9FB00, 0xD9D1, 0x11d2, \
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{0x86, 0xde, 0x0, 0x0, 0x64, 0x65, 0x73, 0x74} }
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/**
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* An aggregate transaction that knows how to absorb all subsequent
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* transactions with the same name. This transaction does not "Do" anything.
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* But it absorbs other transactions via merge, and can undo/redo the
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* transactions it has absorbed.
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*/
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class PlaceholderTxn : public EditAggregateTxn
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{
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public:
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private:
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PlaceholderTxn();
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public:
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virtual ~PlaceholderTxn();
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NS_IMETHOD Do(void);
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NS_IMETHOD Merge(PRBool *aDidMerge, nsITransaction *aTransaction);
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NS_IMETHOD SetAbsorb(PRBool aAbsorb);
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friend class TransactionFactory;
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protected:
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PRBool mAbsorb;
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};
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inline NS_IMETHODIMP PlaceholderTxn::SetAbsorb(PRBool aAbsorb)
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{
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mAbsorb = aAbsorb;
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return NS_OK;
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};
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#endif
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