Calling setHidden(true) on layer does not clear event listeners on children.

[tonistiigi]

Calling setHidden(true) on layer does not clear event listeners on children.

Solution 1:
Calling setHidden(true) on layer should also call setHidden(true) on children objects. This would need extra value to see if call was inherited to have correct behavior on setHidden(false).

Solution 2:
Rewrite getHidden() method to scan all the parents and return true if one of them is hidden. Simpler but has performance penalty.

Originated from: http://groups.google.com/group/limejs/browse_thread/thread/08688d9c605f0a5a#

[pnico]

I disagree, with both the idea that event listeners should be cleared and that getHidden() should return true because a layer or parent node is hidden. The child nodes of a hidden node should not appear on screen, but they should retain their own local "hidden" property.

Re. event listeners, I don't think they should be cleared, but I do think hitTest() should always return false for nodes that are not visible on screen, so when a node is not visible (unless maybe if its alpha is 0 but it is not hidden), things like mouse events would not fire on them. Maybe this is your issue anyway?

[tonistiigi]

There is already fix for it by @ducklord 75bbb41 that will probably be merged to master.

It does the parent check before triggering the event. I would let it stay this way instead of moving it to hitTest to allow hitTest to be overridden by user if there is a need for it.