Selector column plugin is not working if columns are set after postCreate

[betalb]

If we set columns after postCreate, selector plugin won't work

The case is in function setupSelectionEvents, it wraps _initSelectionEvents with aspect, but this aspect won't fire in my case.

[k2s]

• this makes it impossible to create dgrid with _WidgetsInTemplateMixin
• _initSelectionEvents is fired in buildRendering()
• but when column selector() is added to grid it hooks with aspect.before to initSelectionEvents which will never occure again
  • this code is never executed: this.on(".dgrid-selector:click,.dgrid-selector:keydown", onSelect);
  • and selection is not usable