Internal helper structure for moving input focus using the keyboard.
Internal helper structure for moving input focus using the keyboard. An object of type MAS_OBJ_LIST represent one element of a list of widgets where w is the widget the element belongs to and diff is the difference between the widget and the widget that has input focus. To move the focus a list of all widgets is constructed and diff values are computed with a comparison function, then the list is sorted and the focus is offered to the first widget in the list that wants to take focus.
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