I'm playing with Sencha Touch (using Designer), in my ui I'd like to have a panel on the left containing a button (at the bottom) and a list in the reamining area. When the button is pressed, the list is populated dynamically. So far everything's ok. But then, since the panel is displayed with a minimum width, after the list has been populated with string items, the panel should be resized to fit the width of the strings in the list. What kind of layout/functions/events should be used?