Request new Callback for Components in a Substitution/Slot

[francoisfrisch]

Problem:

Lets say I have Components - A, B, C - in a Substitution. Component A must refresh while it is in view such as a Twitter feed view. When the Component is hidden from View, the refresh must stop.

I was looking for callbacks in the Component that are similar to:

    Component A {
        didBecomeActiveInSlot: function(slot, componentThatWasHidden) { }
        didBecomeInactiveInSlot: function(slot, componentThatWillBeShownNext) { .. }
    }

In this case, I can start a timer in didBecomeActiveInSlot callback and stop the timer in the didBecomeInactiveInSlot callback.

Other examples:

• The Component must refresh the contents whenever it comes into view
• The Component can release memory when it is not in view

[francoisfrisch]

Solved by enterDocument and exitDocument