Make MappedTextBox do it's magic as part of buildRendering() rather than postCreate().  It's adding another node to the DOM so it really _should_ be part of buildRendering().
Make MappedTextBox do it's magic as part of buildRendering() rather than postCreate().  It's adding another node to the DOM so it really _should_ be part of buildRendering().

This fixes the FilteringSelect initialization issue although it's still debatable whether all the attr() setter calls should happen before or after postCreate(), or inside _Widget.postCreate().

Also moved the attr() setter calls into a private method, in case that needs to be overridden.

Refs #7244, fixes #7414. !strict

git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@14821 560b804f-0ae3-0310-86f3-f6aa0a117693

Sam-Cummins/delite,kitsonk/delite,Sam-Cummins/delite,harbalk/delite,harbalk/delite,kitsonk/delite