Re: Simple tree navigation

> My first qooxdoo trick is modifying the SplitButton example to have the
> button reflect the selected value:
>
>        menuItem.addListener("execute", function(e){
>   button.setLabel(this.getLabel());
>  });
>
> Where the anonymous function closes over the local variable button to
> know who to set. As an exercise in learning qooxdoo, tho, I wanted to
> find the split button instance by navigating up the qui hierarchy
> looking for such a beast:
>
> function getAscendantTyped(self,type) {
>    if (self) {
>       var par = self.getLayoutParent(); // not .parentNode it seems
>       console.log("getasc sees parents " + par);
>       if (par instanceof type) {
> return par;
>       } else {
>          return getAscendantTyped(par, type);
>       }
>    }
> }
>
> This (or something close, I have been cleaning it up since pasting it
> from my actual code) looks like it will work, but that "Layout" bit has
> me nervous.