Progressbar: Added a complete event. Fixes #3500 - Progressbar callback at the end.

tests/unit/progressbar/progressbar_events.js

@@ -14,4 +14,25 @@ test("change", function() {
 	}).progressbar("value", 5);
 });
 
+test( "complete", function() {
+	expect( 3 );
+	var changes = 0,
+		value;
+	
+	$( "#progressbar" ).progressbar({
+		change: function() {
+			changes++;
+			same( $( this ).progressbar( "value" ), value, "change at " + value );
+		},
+		complete: function() {
+			equal( changes, 2, "complete triggered after change" );
+		}
+	});
+	
+	value = 5;
+	$( "#progressbar" ).progressbar( "value", value );
+	value = 100;
+	$( "#progressbar" ).progressbar( "value", value );
+});
+
 })(jQuery);

ui/jquery.ui.progressbar.js

@@ -64,6 +64,9 @@ $.widget( "ui.progressbar", {
 			this.options.value = value;
 			this._refreshValue();
 			this._trigger( "change" );
+			if ( this._value() === this.max ) {
+				this._trigger( "complete" );
+			}
 		}
 
 		$.Widget.prototype._setOption.apply( this, arguments );