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#ifndef nsIMenuListener_h__
#define nsIMenuListener_h__

#include "nsISupports.h"
#include "nsEvent.h"

class nsIWidget;

// {f2e79602-1700-11d5-bb6f-90f240fe493c}
#define NS_IMENULISTENER_IID      \
{ 0xf2e79602, 0x1700, 0x11d5, \
  { 0xbb, 0x6f, 0x90, 0xf2, 0x40, 0xfe, 0x49, 0x3c } };

/**
 *
 * Menu event listener
 * This interface should only be implemented by the menu manager
 * These are registered with nsWindows to recieve menu events
 */

class nsIMenuListener : public nsISupports {

  public:
    NS_DEFINE_STATIC_IID_ACCESSOR(NS_IMENULISTENER_IID)

	 /**
     * Processes a menu item selected event
     * @param aMenuEvent See nsGUIEvent.h 
     * @return whether the event was consumed or ignored. See nsEventStatus
     */
    virtual nsEventStatus MenuItemSelected(const nsMenuEvent & aMenuEvent) = 0;

    /**
     * Processes a menu selected event
     * @param aMenuEvent See nsGUIEvent.h 
     * @return whether the event was consumed or ignored. See nsEventStatus
     */
    virtual nsEventStatus MenuSelected(const nsMenuEvent & aMenuEvent) = 0;

    /**
     * Processes a menu deselect event
     * @param aMenuEvent See nsGUIEvent.h 
     * @return whether the event was consumed or ignored. See nsEventStatus
     */
    virtual nsEventStatus MenuDeselected(const nsMenuEvent & aMenuEvent) = 0;

    virtual nsEventStatus MenuConstruct( const nsMenuEvent & aMenuEvent,
                                          nsIWidget* aParentWindow, void* aNode,
                                          void* aDocShell) = 0;

    virtual nsEventStatus MenuDestruct(const nsMenuEvent & aMenuEvent) = 0;
    
    virtual nsEventStatus CheckRebuild(PRBool & aMenuEvent) = 0;
    virtual nsEventStatus SetRebuild(PRBool aMenuEvent) = 0;
};

#endif // nsIMenuListener_h__