ToggleButton

ToggleButton is a user interface control that represents a binary state, typically on or off. It is a two-state button that can be pushed or tapped to switch between states. When activated, it changes its state and its visual appearance to indicate the current value. The control retains its state until the user toggles it again, unlike a momentary push button which returns to its default state.

Implementation and platforms: Many UI toolkits provide a ToggleButton. In Java Swing, JToggleButton is a specific class. In Android, ToggleButton is a subclass of CompoundButton. In WPF, ToggleButton is part of the base Button controls. In HTML, a toggle can be represented by a checkbox input or by a button with aria-pressed to indicate the state. Accessibility: should expose its state to assistive technologies via aria-pressed or checked attribute; keyboard users can usually toggle with Space or Enter depending on platform.

Usage considerations: Use toggles for features or options that can be independently enabled or disabled. For mutual exclusivity, consider a group of toggle buttons or use a radio group if only one can be on at a time. Provide clear state indication and consistent behavior. Visual design typically uses different colors, icons, or text to reflect on vs off.