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#ifndef __com_sun_star_form_XUpdateListener_idl__ 
#define __com_sun_star_form_XUpdateListener_idl__ 
 
#ifndef __com_sun_star_lang_XEventListener_idl__ 
#include <com/sun/star/lang/XEventListener.idl> 
#endif 
 
#ifndef __com_sun_star_lang_EventObject_idl__ 
#include <com/sun/star/lang/EventObject.idl> 
#endif 
 
 
//============================================================================= 
 
 module com {  module sun {  module star {  module form { 
 
//============================================================================= 
 
/** used to listen on objects which allow updating their data.
	<p>In addition to just get notified when an data update happened, the listener
	has a chance to veto updates <em>before</em> they happen.</p>
	
	@see XUpdateBroadcaster
 */
published interface XUpdateListener: com::sun::star::lang::XEventListener
{ 
	//------------------------------------------------------------------------- 
	 
	/** is invoked to check the current data.

		<p>For a given update process, if one of the <type>XUpdateListener</type>s
		vetos the change, the update is canceled, and no further notification happens.</p>

		@param aEvent
			An event dedscriptor specifying the broadcaster of the change.

		@returns 
			<TRUE/> when the update was approved, otherwise <FALSE/>.
	 */
	boolean approveUpdate( [in] com::sun::star::lang::EventObject aEvent ); 
 
	//------------------------------------------------------------------------- 
	 
	/** is invoked when an object has finished processing the updates and
		the data has been successfully written.

		@param aEvent
			A event dedscriptor specifying the broadcaster of the change.
	 */
	void updated( [in] com::sun::star::lang::EventObject aEvent ); 
 
}; 
 
//============================================================================= 
 
}; }; }; }; 
 
/*============================================================================= 
 
=============================================================================*/ 
#endif