Popup form (in a window), any way to do control focus after rendering?

[darthwes]

I'm popping a form in a window to allow for populating a data table. Everything is pretty straight forward. What I have done is create an "Add" button on the window to generate a new fieldset in the form. Now all this works fine. What I'm having problems understanding is how do I set the user's focus to the newly added fieldset (and/or the first field in the field set).

I am aware that I can use defaultButton on windows, but it doesn't seem to address this problem because I've already got the window open and I'm dynamically adding fieldsets. Does anyone know of a solution for this?

For completeness, this is how I'm adding the fieldset to the form.

...
//this is the formpanel
//build up var newFieldSet...
this.add(newFieldSet);
if(this.rendered) {
  this.doLayout();
}
...

[Condor]

Using the defaultButton is the safest option (it also refocusses after dragging or resizing the window).

But you probably want:

this.defaultButton = <field-to-focus>;
if(this.rendered) {
  this.doLayout();
  this.focus();
}

[darthwes]

You are the king of all 2.5m-or-greater-wingspan avians!