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109 lines
2.7 KiB
C++
109 lines
2.7 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 DeleteRangeTxn_h__
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#define DeleteRangeTxn_h__
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#include "EditAggregateTxn.h"
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#include "nsIDOMNode.h"
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#include "nsIEditor.h"
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#include "nsCOMPtr.h"
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class nsIDOMDocument;
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class nsIDOMRange;
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#define DELETE_RANGE_TXN_IID \
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{/* 5ec6b260-ac49-11d2-86d8-000064657374 */ \
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0x5ec6b260, 0xac49, 0x11d2, \
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{0x86, 0xd8, 0x0, 0x0, 0x64, 0x65, 0x73, 0x74} }
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/**
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* A transaction that deletes an entire range in the content tree
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*/
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class DeleteRangeTxn : public EditAggregateTxn
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{
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public:
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/** initialize the transaction.
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* @param aEditor the object providing basic editing operations
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* @param aRange the range to delete
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*/
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NS_IMETHOD Init(nsIEditor *aEditor, nsIDOMRange *aRange);
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private:
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DeleteRangeTxn();
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public:
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virtual ~DeleteRangeTxn();
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NS_IMETHOD Do(void);
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NS_IMETHOD Undo(void);
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NS_IMETHOD Redo(void);
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NS_IMETHOD Merge(PRBool *aDidMerge, nsITransaction *aTransaction);
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NS_IMETHOD Write(nsIOutputStream *aOutputStream);
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NS_IMETHOD GetUndoString(nsString **aString);
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NS_IMETHOD GetRedoString(nsString **aString);
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protected:
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NS_IMETHOD CreateTxnsToDeleteBetween(nsIDOMNode *aStartParent,
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PRUint32 aStartOffset,
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PRUint32 aEndOffset);
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NS_IMETHOD CreateTxnsToDeleteNodesBetween();
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NS_IMETHOD CreateTxnsToDeleteContent(nsIDOMNode *aParent,
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PRUint32 aOffset,
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nsIEditor::Direction aDir);
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protected:
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/** p1 in the range */
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nsCOMPtr<nsIDOMRange> mRange;
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/** p1 in the range */
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nsCOMPtr<nsIDOMNode> mStartParent;
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/** p1 offset */
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PRInt32 mStartOffset;
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/** p2 in the range */
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nsCOMPtr<nsIDOMNode> mEndParent;
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/** the closest common parent of p1 and p2 */
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nsCOMPtr<nsIDOMNode> mCommonParent;
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/** p2 offset */
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PRInt32 mEndOffset;
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/** the editor for this transaction */
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nsCOMPtr<nsIEditor> mEditor;
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friend class TransactionFactory;
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};
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#endif
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