Extjs4 Check-tree: tri state checkbox on nodes to summarize leaves states -

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is possible incorporate tri-state checkbox in extjs check tree?

by tri-state, mean parent node is:

  • checked if children checked
  • unchecked if children unchecked
  • grey/filled if children checked not all

something this: http://shamsmi.blogspot.fr/2008/12/tri-state-checkbox-using-javascript.html

i found create tri-state checkbox regular forms: http://www.sencha.com/forum/showthread.php?138664-ext.ux.form.tricheckbox&p=619810

but don't know how apply custom checkbox tree view, or if possible.

any idea?


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