Description Yun Feng Ma 2011-09-01 01:51:59 EDT

Build Identifier: 

The callback methods in below cases need to be wrapped with Delegate:
1) widget Event handler, such as onClick event handler in Button.
2) Service call returning to method.

Here is a test case for above two cases:
handler demo9 type RUIhandler {initialUI = [ ui ],onConstructionFunction = start, cssFile="css/MyRUI9.css", title="demo9"}
	
	TextField TextField{};

	Button Button{ text = "Click", onClick ::= Button_onClick }; //here the Button_onClick should be wrapped with Delegate in generated javascript
	ui Box{  children = [ Button, TextField ] };
	
	function start()
	end
	
	function Button_onClick(event Event in)
		EchoService9 EchoService9{@bindservice {}};
		call EchoService9.echo() returning to echo1; //here the echo1 should be wrapped with Delegate in generated javascript
	end	
	
	function echo1( retResult string in)
		TextField.text = retResult;
	end
end

If Button_onClick is not wrapped with Delegate in generated javascript, when the Button is clicked, the "this" in method Button_onClick is not demo9, then method "echo1" can not be accessed in Button_onClick.

If echo1 is not wrapped with Delegate in generated javascript, when the Service call returns and the callback method is invoked, the "this" in method echo1 is not demo9, then TextField can not be accessed.

Reproducible: Always