xref: /aoo41x/main/svx/inc/svx/sdrundomanager.hxx (revision 31b2f7b2)

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 *
 * 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
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#ifndef _SDR_UNDOMANAGER_HXX
#define _SDR_UNDOMANAGER_HXX

#include "svx/svxdllapi.h"
#include <sal/types.h>
#include <editeng/editund2.hxx>
#include <tools/link.hxx>

//////////////////////////////////////////////////////////////////////////////

class SVX_DLLPUBLIC SdrUndoManager : public EditUndoManager
{
private:
	using EditUndoManager::Undo;
	using EditUndoManager::Redo;

    Link            maEndTextEditHdl;
    SfxUndoAction*  mpLastUndoActionBeforeTextEdit;
    bool            mbEndTextEditTriggeredFromUndo;

protected:
    // call to check for TextEdit active
    bool isTextEditActive() const;

public:
	SdrUndoManager(sal_uInt16 nMaxUndoActionCount = 20);
    virtual ~SdrUndoManager();

    /// react depending on edit mode and if no more undo is possible
    virtual sal_Bool Undo();
    virtual sal_Bool Redo();

    // ##
    virtual void Clear();

    // Call for the view which starts the interactive text edit. Use link to
    // activate (start text edit) and empty link to reset (end text edit). On
    // reset all text edit actions will be removed from this undo manager to
    // restore the state before activation
    void SetEndTextEditHdl(const Link& rLink);

    // check from outside if we are inside a callback for ending text edit. This
    // is needed to detect inside end text edit if it is a regular one or triggered
    // by a last undo during text edit
    bool isEndTextEditTriggeredFromUndo() { return mbEndTextEditTriggeredFromUndo; }
};

//////////////////////////////////////////////////////////////////////////////

#endif //_SDR_UNDOMANAGER_HXX
// eof