Function usePress

packages/react-aria/src/interactions/usePress.ts:193–1033

(props: PressHookProps)

 * of dealing with pointer and keyboard events.
 */
export function usePress(props: PressHookProps): PressResult {
  let {
    onPress,
    onPressChange,
    onPressStart,
    onPressEnd,
    onPressUp,
    onClick,
    isDisabled,
    isPressed: isPressedProp,
    preventFocusOnPress,
    shouldCancelOnPointerExit,
    allowTextSelectionOnPress,
    ref: domRef,
    ...domProps
  } = usePressResponderContext(props);

  let [isPressed, setPressed] = useState(false);
  let ref = useRef<PressState>({
    isPressed: false,
    ignoreEmulatedMouseEvents: false,
    didFirePressStart: false,
    isTriggeringEvent: false,
    activePointerId: null,
    target: null,
    isOverTarget: false,
    pointerType: null,
    disposables: []
  });

  let {addGlobalListener, removeAllGlobalListeners} = useGlobalListeners();

  let triggerPressStart = useCallback(
    (originalEvent: EventBase, pointerType: PointerType) => {
      let state = ref.current;
      if (isDisabled || state.didFirePressStart) {
        return false;
      }

      let shouldStopPropagation = true;
      state.isTriggeringEvent = true;
      if (onPressStart) {
        let event = new PressEvent('pressstart', pointerType, originalEvent);
        onPressStart(event);
        shouldStopPropagation = event.shouldStopPropagation;
      }

      if (onPressChange) {
        onPressChange(true);
      }

      state.isTriggeringEvent = false;
      state.didFirePressStart = true;
      setPressed(true);
      return shouldStopPropagation;
    },
    [isDisabled, onPressStart, onPressChange]
  );