CollapseTool

Set to false to disable automatic adjustment of the align config based on the state of the panel's collapsed config and the direction.

If this is set to a function, that function is called passing the owning Panel instance and its return value is assigned to the align config.

Identifies an object as an instance of CollapseTool class, or subclass thereof.

Identifies an object as an instance of CollapseTool class, or subclass thereof.