TabContainer: add visible attribute to tabs

[Eric Pasquier]

At present, the only way to show/hide a tab dynamically in a tabcontainer is to use addChild/removeChild from the tabcontainer widget. Is it possible to implement a 'setVisible' function from the tab itself ? Also, define a 'visible' attribute for the declarative way.

(may be this will require a TabContentPane instead of a ContentPane ?)

[Adam Peller]

I'm not sure I understand the requirement. The container seems like the right place to add and remove children. There is a separate discussion somewhere about whether to allow disabling of tabs (but still keep them in place)

[bill]

It wouldn't require a TabContentPane widget but I'm not sure if the change is worth it just to prevent the user doing addChild() and removeChild(). It seems like a lot of work to support... I'll think about it.

PS: it wouldn't be setVisible() but rather attr("visible", false).

[bill]

Closing in favor of #5601. If I add anything it would probably be to disable tabs, and even that is questionable. But if you just want the tab to disappear (rather than appearing disabled), it's easy enough to call addChild/removeChild.