ahooks/es/useLongPress/index.js

react hooks library

import { useRef } from 'react';
import useLatest from '../useLatest';
import { getTargetElement } from '../utils/domTarget';
import useEffectWithTarget from '../utils/useEffectWithTarget';
function useLongPress(onLongPress, target, _a) {
  var _b = _a === void 0 ? {} : _a,
    _c = _b.delay,
    delay = _c === void 0 ? 300 : _c,
    moveThreshold = _b.moveThreshold,
    onClick = _b.onClick,
    onLongPressEnd = _b.onLongPressEnd;
  var onLongPressRef = useLatest(onLongPress);
  var onClickRef = useLatest(onClick);
  var onLongPressEndRef = useLatest(onLongPressEnd);
  var timerRef = useRef(undefined);
  var isTriggeredRef = useRef(false);
  var pervPositionRef = useRef({
    x: 0,
    y: 0
  });
  var mousePressed = useRef(false);
  var touchPressed = useRef(false);
  var hasMoveThreshold = !!((moveThreshold === null || moveThreshold === void 0 ? void 0 : moveThreshold.x) && moveThreshold.x > 0 || (moveThreshold === null || moveThreshold === void 0 ? void 0 : moveThreshold.y) && moveThreshold.y > 0);
  useEffectWithTarget(function () {
    var targetElement = getTargetElement(target);
    if (!(targetElement === null || targetElement === void 0 ? void 0 : targetElement.addEventListener)) {
      return;
    }
    var overThreshold = function (event) {
      var _a = getClientPosition(event),
        clientX = _a.clientX,
        clientY = _a.clientY;
      var offsetX = Math.abs(clientX - pervPositionRef.current.x);
      var offsetY = Math.abs(clientY - pervPositionRef.current.y);
      return !!((moveThreshold === null || moveThreshold === void 0 ? void 0 : moveThreshold.x) && offsetX > moveThreshold.x || (moveThreshold === null || moveThreshold === void 0 ? void 0 : moveThreshold.y) && offsetY > moveThreshold.y);
    };
    function getClientPosition(event) {
      if ('TouchEvent' in window && event instanceof TouchEvent) {
        return {
          clientX: event.touches[0].clientX,
          clientY: event.touches[0].clientY
        };
      }
      if (event instanceof MouseEvent) {
        return {
          clientX: event.clientX,
          clientY: event.clientY
        };
      }
      return {
        clientX: 0,
        clientY: 0
      };
    }
    var createTimer = function (event) {
      timerRef.current = setTimeout(function () {
        onLongPressRef.current(event);
        isTriggeredRef.current = true;
      }, delay);
    };
    var onTouchStart = function (event) {
      if (touchPressed.current) {
        return;
      }
      touchPressed.current = true;
      if (hasMoveThreshold) {
        var _a = getClientPosition(event),
          clientX = _a.clientX,
          clientY = _a.clientY;
        pervPositionRef.current.x = clientX;
        pervPositionRef.current.y = clientY;
      }
      createTimer(event);
    };
    var onMouseDown = function (event) {
      var _a;
      if ((_a = event === null || event === void 0 ? void 0 : event.sourceCapabilities) === null || _a === void 0 ? void 0 : _a.firesTouchEvents) {
        return;
      }
      mousePressed.current = true;
      if (hasMoveThreshold) {
        pervPositionRef.current.x = event.clientX;
        pervPositionRef.current.y = event.clientY;
      }
      createTimer(event);
    };
    var onMove = function (event) {
      if (timerRef.current && overThreshold(event)) {
        clearTimeout(timerRef.current);
        timerRef.current = undefined;
      }
    };
    var onTouchEnd = function (event) {
      var _a;
      if (!touchPressed.current) {
        return;
      }
      touchPressed.current = false;
      if (timerRef.current) {
        clearTimeout(timerRef.current);
        timerRef.current = undefined;
      }
      if (isTriggeredRef.current) {
        (_a = onLongPressEndRef.current) === null || _a === void 0 ? void 0 : _a.call(onLongPressEndRef, event);
      } else if (onClickRef.current) {
        onClickRef.current(event);
      }
      isTriggeredRef.current = false;
    };
    var onMouseUp = function (event) {
      var _a, _b;
      if ((_a = event === null || event === void 0 ? void 0 : event.sourceCapabilities) === null || _a === void 0 ? void 0 : _a.firesTouchEvents) {
        return;
      }
      if (!mousePressed.current) {
        return;
      }
      mousePressed.current = false;
      if (timerRef.current) {
        clearTimeout(timerRef.current);
        timerRef.current = undefined;
      }
      if (isTriggeredRef.current) {
        (_b = onLongPressEndRef.current) === null || _b === void 0 ? void 0 : _b.call(onLongPressEndRef, event);
      } else if (onClickRef.current) {
        onClickRef.current(event);
      }
      isTriggeredRef.current = false;
    };
    var onMouseLeave = function (event) {
      var _a;
      if (!mousePressed.current) {
        return;
      }
      mousePressed.current = false;
      if (timerRef.current) {
        clearTimeout(timerRef.current);
        timerRef.current = undefined;
      }
      if (isTriggeredRef.current) {
        (_a = onLongPressEndRef.current) === null || _a === void 0 ? void 0 : _a.call(onLongPressEndRef, event);
        isTriggeredRef.current = false;
      }
    };
    targetElement.addEventListener('mousedown', onMouseDown);
    targetElement.addEventListener('mouseup', onMouseUp);
    targetElement.addEventListener('mouseleave', onMouseLeave);
    targetElement.addEventListener('touchstart', onTouchStart);
    targetElement.addEventListener('touchend', onTouchEnd);
    if (hasMoveThreshold) {
      targetElement.addEventListener('mousemove', onMove);
      targetElement.addEventListener('touchmove', onMove);
    }
    return function () {
      if (timerRef.current) {
        clearTimeout(timerRef.current);
        isTriggeredRef.current = false;
      }
      targetElement.removeEventListener('mousedown', onMouseDown);
      targetElement.removeEventListener('mouseup', onMouseUp);
      targetElement.removeEventListener('mouseleave', onMouseLeave);
      targetElement.removeEventListener('touchstart', onTouchStart);
      targetElement.removeEventListener('touchend', onTouchEnd);
      if (hasMoveThreshold) {
        targetElement.removeEventListener('mousemove', onMove);
        targetElement.removeEventListener('touchmove', onMove);
      }
    };
  }, [], target);
}
export default useLongPress;