// $Revision: 1.2 $
// Copyright (C) 1994, 1995 Taligent, Inc. All rights reserved.

#ifndef TaligentSample_MENUHOLDER
#define TaligentSample_MENUHOLDER

//----------------------------------
// Includes
//----------------------------------
#ifndef Taligent_PRIMITIVETYPES
#include <Taligent/PrimitiveTypes.h>
#endif
#ifndef Taligent_DEQUEOF
#include <Taligent/DequeOf.h>
#endif
#ifndef Taligent_MENUCONTROLS
#include  <Taligent/MenuControls.h>
#endif

// TMenuHolder helps maintain menus in presentations.  A small enabler class to make menu work easier.

class TMenuHolder
{
	public:
								TMenuHolder();
								~TMenuHolder();
		
		TMenuHolder& 			operator=(TMenu* adoptMenu);
		TMenuHolder& 			operator=(MMenuItem* adoptMenuItem);
								operator bool() const;	// True if initialized
		
		void					ActivateFirst(TMenu& menu);
		void					ActivateLast(TMenu& menu);
		void					ActivateAfter(MMenuItem& after);
		void					ActivateAfter(TMenu& menu,
									const TMenuDomainID& domain,
									const TMenuItemID& id);
		void					Deactivate();
		
		// Enable or disable entire menu 
		void					SetEnabled(bool enabled);
		// Enable or disable menu item(s) matching ID.  Recursively examines all menu items.
		void					SetEnabled(bool enabled, TMenuItemID id);
		
	protected:
		// Used for recursive examination of menu items
		void					SetEnabled(bool enabled, TMenuItemID id, TMenu& menu);

	private:
		enum EState  { kNew, kInactive, kActive };
		EState					fState;
		TDequeOf<MMenuItem>		fItems;
};

#endif // TaligentSample_MENUHOLDER