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ACT_Action.h

/**
 * $Id: ACT_Action.h,v 1.3 2002/10/30 02:06:18 mein Exp $
 * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version. The Blender
 * Foundation also sells licenses for use in proprietary software under
 * the Blender License.  See http://www.blender.org/BL/ for information
 * about this.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL/BL DUAL LICENSE BLOCK *****
 */

/**

 * $Id: ACT_Action.h,v 1.3 2002/10/30 02:06:18 mein Exp $
 * Copyright (C) 2001 NaN Technologies B.V.
 * @author  Maarten Gribnau
 * @date    March 31, 2001
 */

#ifndef _H_ACT_ACTION_H_
#define _H_ACT_ACTION_H_

#include "MEM_RefCounted.h"
#include "STR_String.h"

/**
 * An action that can be applied or undone.
 * Virtual base class for actions with a name.
 * An action object inherits the shared object reference count mechanism.
 * @author  Maarten Gribnau
 * @date    March 31, 2001
 */

00054 class ACT_Action : public MEM_RefCounted {
public:
      /**
       * Constructs an action with the given name .
       * @param   name  the name of the action.
       * @param   applied     state of the action after creation.
       */
      ACT_Action(const STR_String& name, bool applied = false);

      /** 
       * Returns the name of the action.
       * @param   name  the name of the action.
       */
      inline virtual void getName(STR_String& name) const;

      /** 
       * Returns the name of the action as a pointer to the data of the string.
       * @return  pointer to the name of the action.
       */
      inline virtual char* getName();

      /** 
       * Sets the name of the action.
       * @param   name  the name of the action.
       */
      inline virtual void setName(const STR_String& name);

      /** 
       * Returns whether this action is applied.
       * @return whether this action is applied.
       */
      inline virtual bool getIsApplied() const;


      /**
       * Call this member to apply an action.
       * Child classes should override the doApply member to implement apply functionality.
       * @see doApply.
       */
      virtual void apply();

      /**
       * Call this member to undo an action .
       * Child classes should override the doUndo member to implement undo functionality.
       * @see doApply()
       */
      virtual void undo();

protected:
      /**
       * Implementations should overload this method to provide the apply functionality.
       */
      virtual void doApply() = 0;

      /**
       * Implementations should overload this method to provide the undo functionality.
       */
      virtual void doUndo() = 0;

      /** Name of this action */
00114       STR_String m_name;
      /** Is this action already applied? */
00116       bool m_applied;
};


00120 void ACT_Action::getName(STR_String& name) const
{
      name = m_name;
}

00125 char* ACT_Action::getName()
{
      return m_name.Ptr();
}

00130 void ACT_Action::setName(const STR_String& name)
{
      m_name = name;
}

00135 inline bool ACT_Action::getIsApplied() const
{
      return m_applied;
}

#endif // _H_ACT_ACTION_H_


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