Adds a child to the container.
The child to add
The child that was added
Adds a child to the container at a specified index.
The child to add
The index to place the child in
The child that was added
Calls each of the listeners registered for a given event.
The event name.
Arguments that are passed to registered listeners
true
if the event had listeners, else false
.
Return an array listing the events for which the emitter has registered listeners.
Return the listeners registered for a given event.
The event name.
Check if there listeners for a given event.
If exists
argument is not true
lists listeners.
The event name.
Only check if there are listeners.
Removes a child from the container.
The child to remove
The child that was removed
Removes a child from the specified index position.
The index to get the child from
The child that was removed
This function doesn't apply anymore.
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The root object of the display tree.
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