/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/


#ifndef _TEXTUNDO_HXX
#define _TEXTUNDO_HXX

#include <svl/undo.hxx>

class TextEngine;

class TextUndoManager : public SfxUndoManager
{
	TextEngine*		mpTextEngine;

protected:

	void			UndoRedoStart();
	void			UndoRedoEnd();

	TextView*		GetView() const { return mpTextEngine->GetActiveView(); }

public:
					TextUndoManager( TextEngine* pTextEngine );
					~TextUndoManager();

    using SfxUndoManager::Undo;
	virtual sal_Bool Undo();
    using SfxUndoManager::Redo;
	virtual sal_Bool Redo();

};

class TextUndo : public SfxUndoAction
{
private:
	TextEngine*			mpTextEngine;

protected:

	TextView*			GetView() const { return mpTextEngine->GetActiveView(); }
	void				SetSelection( const TextSelection& rSel );

	TextDoc*			GetDoc() const { return mpTextEngine->mpDoc; }
	TEParaPortions*		GetTEParaPortions() const { return mpTextEngine->mpTEParaPortions; }

public:
						TYPEINFO();
						TextUndo( TextEngine* pTextEngine );
	virtual 			~TextUndo();

	TextEngine*			GetTextEngine() const	{ return mpTextEngine; }

	virtual void		Undo() 		= 0;
	virtual void		Redo()		= 0;

	virtual XubString	GetComment() const;
};

#endif // _TEXTUNDO_HXX