Feature: Hierarchy

[rmariuzzo]

Would be useful to add a "hierarchy" super power to checkboxes? Suppose we have the following HTML:

The "hierarchy" super power will enhance the hierarchy context of checkboxes with the following behaviour:

• Checking a checkbox will...
  • ...check its parent (this will be recursive until no more parent is found in the hierarchy).
  • ...check all of its children.
• Unchecking a checkbox will...
  • ...uncheck its parent only if all siblings of that checkbox are unchecked (this will be recursive until no more parent is found in the hierarchy).
  • ...uncheck all of its children.

Any suggestion, or comments?