public Button dialog ( String message ) throws IOException , UserCancelExcption { Map < String , Object > m = JSONProtocol . cmd ( "dialog" ) ; m . put ( "text" , message ) ; pipe . send ( m ) ; Map < String , Object > r = pipe . recv ( ) ; if ( ! JSONProtocol . check ( m , r ) || ! r . containsKey ( "button" ) ) { throw new IOException ( "Unknown button pressed" ) ; } return Button . valueOf ( ( ( String ) r . get ( "button" ) ) . toUpperCase ( ) ) ; }
Shows a dialog message to the user and returns the pressed button .