dijit.layout.ContentPane and destroyDescendants

[rmaccracken]

ContentPane's destroyDescendants function does not accept a preserveDom parameter and always deletes its contents when destroyRecursive is called.

The following line should not be called if preserveDom is true:

dojo.html._emptyNode(this.containerNode);

Also, calls to destroyRecursive within the function should pass the preserveDom parameter.

[rmaccracken]

I may discover more, but it looks like StackContainer? has a similar problem. It accepts the preserveDom parameter, but the first thing it does is call removeChild for each tab which removes the content from the DOM. It looks like that call should only be made if preserveDom is false.

[bill]

I imagine there will be lots of cases when preseveDom doesn't work; note that the definition of destroy says "Note: This will not yet work with _Templated widgets".

I'll update those cases you mentioned though.

[bill]

In [26519]:

Fix a few cases of preserveDom parameter not working; still not sure how well it's supported in general. Fixes #13880 !strict.