/********************************************************************************
* *
* D e l e g a t o r T a r g e t *
* *
*********************************************************************************
* Copyright (C) 2000,2004 by Jeroen van der Zijp. All Rights Reserved. *
*********************************************************************************
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Lesser General Public *
* License as published by the Free Software Foundation; either *
* version 2.1 of the License, or (at your option) any later version. *
* *
* This library 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 *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this library; if not, write to the Free Software *
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. *
*********************************************************************************
* $Id: FXDelegator.h 1889 2004-05-26 03:13:01Z lyle $ *
********************************************************************************/
#ifndef FXDELEGATOR_H
#define FXDELEGATOR_H
#ifndef FXOBJECT_H
#include "FXObject.h"
#endif
namespace FX {
/**
* A delegator forwards messages to a delegate object.
* Delegators are used when you need to multiplex messages
* toward any number of target objects.
* For example, many controls may be connected to FXDelegator,
* instead of directly to the document object. Changing the
* delegate in FXDelegator will then reconnect the controls with their
* new target.
*/
class FXAPI FXDelegator : public FXObject {
FXDECLARE(FXDelegator)
protected:
FXObject *delegate;
private:
FXDelegator(const FXDelegator&);
FXDelegator &operator=(const FXDelegator&);
public:
virtual long onDefault(FXObject*,FXSelector,void*);
public:
/// Construct a delegator
FXDelegator(FXObject* target=NULL):delegate(target){ }
/// Return delegate object
FXObject* getDelegate() const { return delegate; }
/// Change delegate object
void setDelegate(FXObject* target){ delegate=target; }
/// Always trash during detroy
virtual ~FXDelegator(){ delegate=(FXObject*)-1L; }
};
}
#endif