Base class for UI elements. Doesn't have functionality by itself, use subclasses instead.
Return the game object that this UI element is attached to. Returns undefined if the element isn't attached to a game object.
Return the widget that contains this widget, for example a border that wraps a check box. Returns undefined if this object has no parent.
Return whether the widget is currently enabled (see setEnabled).
Return whether the widget is currently visible (see setVisible).
Set whether the widget is enabled. When a widget is disabled, users can't interact with it and it is greyed out. When a widget that contains other widgets (like VerticalBox) is disabled, all its children behave as if disabled, too. By default, widgets are enabled.
Whether to enable the widget.
Set whether the widget is visible. When a widget that contains other widgets (like VerticalBox) is invisible, all its children are invisible, too. The layout of widgets is updated when visibility changes, and invisible widgets are treated as if they don't exist.
Whether the widget is visible.