1. module react-fastclick
   1. function react-fastclick ()

module react-fastclick

function react-fastclick ()

• description and source-code

  function initializeReactFastclick() {
    var originalCreateElement = React.createElement;
  
    // Moved if Math.abs(downX - upX) > MOVE_THRESHOLD;
    var MOVE_THRESHOLD = 8;
    var TOUCH_DELAY = 1000;
  
    var touchKeysToStore = [
      'clientX',
      'clientY',
      'pageX',
      'pageY',
      'screenX',
      'screenY',
      'radiusX',
      'radiusY'
    ];
  
    var touchEvents = {
      downPos: {},
      lastPos: {}
    };
  
    var isDisabled = function (element) {
      if (!element) {
        return false;
      }
      var disabled = element.getAttribute('disabled');
  
      return disabled !== false && disabled !== null;
    };
  
    var focus = function (event, target) {
      var myTarget = target || event.currentTarget;
  
      if (!myTarget || isDisabled(myTarget)) {
        return;
      }
  
      myTarget.focus();
    };
  
    var handleType = {
      input: function (event) {
        focus(event);
        event.stopPropagation();
      },
      textarea: function (event) {
        focus(event);
        event.stopPropagation();
      },
      select: function (event) {
        focus(event);
        event.stopPropagation();
      },
      label: function (event) {
        var input;
  
        var forTarget = event.currentTarget.getAttribute('for');
  
        if (forTarget) {
          input = document.getElementById(forTarget);
        } else {
          input = event.currentTarget.querySelectorAll('input, textarea, select')[0];
        }
  
        if (input) {
          focus(event, input);
        }
      }
    };
  
    var fakeClickEvent = function (event) {
      if (typeof event.persist === 'function') {
        event.persist();
      }
  
      event.fastclick = true;
      event.type = 'click';
      event.button = 0;
    };
  
    var copyTouchKeys = function (touch, target) {
      if (typeof target.persist === 'function') {
        target.persist();
      }
  
      if (touch) {
        for (var i = 0; i < touchKeysToStore.length; i += 1) {
          var key = touchKeysToStore[i];
          target[key] = touch[key];
        }
      }
    };
  
    var noTouchHappened = function () {
      return !touchEvents.touched && (
        !touchEvents.lastTouchDate || new Date().getTime() > touchEvents.lastTouchDate + TOUCH_DELAY
      );
    };
  
    var invalidateIfMoreThanOneTouch = function (event) {
      touchEvents.invalid = event.touches && event.touches.length > 1 || touchEvents.invalid;
    };
  
    var onMouseEvent = function (callback, event) {
      // Prevent any mouse events if we touched recently
      if (typeof callback === 'function' && noTouchHappened()) {
        callback(event);
      }
      if (event.type === 'click') {
        touchEvents.invalid = false;
        touchEvents.touched = false;
        touchEvents.moved = false;
      }
    };
  
    var onTouchStart = function (callback, event) {
      touchEvents.invalid = false;
      touchEvents.moved = false;
      touchEvents.touched = true;
      touchEvents.lastTouchDate = new Date().getTime();
  
      copyTouchKeys(event.touches[0], touchEvents.downPos);
      copyTouchKeys(event.touches[0], touchEvents.lastPos);
  
      invalidateIfMoreThanOneTouch(event);
  
      if (typeof callback === 'function') {
        callback(event);
      }
    };
  
    var onTouchMove = function (callback, event) {
      touchEvents.touched = true;
      touchEvents.lastTouchDate = new Date().getTime();
  
      copyTouchKeys(event.touches[0], touchEvents.lastPos);
  
      invalidateIfMoreThanOneTouch(event);
  
      if (Math.abs(touchEvents.downPos.clientX - touchEvents.lastPos.clientX) > MOVE_THRESHOLD ||
        Math.abs(touchEvents.downPos.clientY - touchEvents.lastPos.clientY) > MOVE_THRESHOLD) {
        touchEvents.moved = true;
      }
  
      if (typeof callback === 'function') {
        callback(event);
      }
    };
  
    var onTouchEnd = function (callback, onClick, type, event) {
      touchEvents.touched = true;
      touchEvents.lastTouchDate = new Date().getTime();
  
      invalidateIfMoreThanOneTouch(event);
  
      if (typeof callback === 'function') {
        callback(event);
      }
  
      if (!touchEvents.invalid && !touchEvents.moved) {
        var box = event.currentTarget.getBoundingClientRect();
  
        if (touchEvents.lastPos.clientX - (touchEvents.lastPos.radiusX || 0) <= box.right &&
          touchEve ...

• example usage

  n/a