@ what is this?
Ext.tree.TreePanel of ExtJS 3 supports selection by checkbox.
but unfortunately it lacks feature of cascade and bubble / tri-state selection like
see discussion, here.
so i wrote extension for this feature.
example is here, and source is here.
@ how to use?
- include the stylesheet/extension by link/script tag.
- set TreePanel's property "cascading: true"
- set root node's property "checked: (true|false)".
note that this works only with ExtJS 3.4.
latest version, ExtJS 4.2 still lacks this feature(see here), but ExtJS 4's tree implementation( Ext.tree.Panel) is completely brand-new.
so unfortunately my extension doesn't work anymore.