'use strict';

(function ($) {
  $.attrFn = $.attrFn || {};

  var touchCapable = ('ontouchstart' in window);
  var settings = {
    tap_pixel_range: 5,
    swipe_h_threshold: 50,
    swipe_v_threshold: 50,
    taphold_threshold: 750,
    doubletap_int: 500,
    touch_capable: touchCapable,
    orientation_support: ('orientation' in window && 'onorientationchange' in window),
    startevent: (touchCapable) ? 'touchstart' : 'mousedown',
    endevent: (touchCapable) ? 'touchend' : 'mouseup',
    moveevent: (touchCapable) ? 'touchmove' : 'mousemove',
    tapevent: (touchCapable) ? 'tap' : 'click',
    scrollevent: (touchCapable) ? 'touchmove' : 'scroll',
    hold_timer: null,
    tap_timer: null
  };

  $.isTouchCapable = function() { return settings.touch_capable; };
  $.getStartEvent = function() { return settings.startevent; };
  $.getEndEvent = function() { return settings.endevent; };
  $.getMoveEvent = function() { return settings.moveevent; };
  $.getTapEvent = function() { return settings.tapevent; };
  $.getScrollEvent = function() { return settings.scrollevent; };

  $.each([
    'tapstart', 'tapend', 'tapmove', 'tap', 'tap2', 'tap3', 'tap4', 'singletap', 'doubletap',
    'taphold', 'swipe', 'swipeup', 'swiperight', 'swipedown', 'swipeleft', 'swipeend',
    'scrollstart', 'scrollend', 'orientationchange'
  ], function (i, name) {
    $.fn[name] = function (fn) {
      return fn ? this.on(name, fn) : this.trigger(name);
    };

    $.attrFn[name] = true;
  });

  $.event.special.tapstart = {
    setup: function () {
      var thisObject = this;
      var $this = $(thisObject);

      $this.on(settings.startevent, function tapStartFunc(e) {
        $this.data('callee', tapStartFunc);
        if (e.which && e.which !== 1) return false;

        var origEvent = e.originalEvent;
        var touchData = {
          'position': {
            'x': ((settings.touch_capable) ? origEvent.touches[0].screenX : e.screenX),
            'y': (settings.touch_capable) ? origEvent.touches[0].screenY : e.screenY
          },
          'offset': {
            'x': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageX - ($this.offset() ? $this.offset().left : 0)) : Math.round(e.pageX - ($this.offset() ? $this.offset().left : 0)),
            'y': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageY - ($this.offset() ? $this.offset().top : 0)) : Math.round(e.pageY - ($this.offset() ? $this.offset().top : 0))
          },
          'time': Date.now(),
          'target': e.target
        };

        triggerCustomEvent(thisObject, 'tapstart', e, touchData);
        return true;
      });
    },
    remove: function () {
      $(this).off(settings.startevent, $(this).data.callee);
    }
  };

  $.event.special.tapmove = {
    setup: function() {
      var thisObject = this;
      var $this = $(thisObject);

      $this.on(settings.moveevent, function tapMoveFunc(e) {
        $this.data('callee', tapMoveFunc);

        var origEvent = e.originalEvent;
        var touchData = {
          'position': {
            'x': ((settings.touch_capable) ? origEvent.touches[0].screenX : e.screenX),
            'y': (settings.touch_capable) ? origEvent.touches[0].screenY : e.screenY
          },
          'offset': {
            'x': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageX - ($this.offset() ? $this.offset().left : 0)) : Math.round(e.pageX - ($this.offset() ? $this.offset().left : 0)),
            'y': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageY - ($this.offset() ? $this.offset().top : 0)) : Math.round(e.pageY - ($this.offset() ? $this.offset().top : 0))
          },
          'time': Date.now(),
          'target': e.target
        };

        triggerCustomEvent(thisObject, 'tapmove', e, touchData);
        return true;
      });
    },
    remove: function() {
      $(this).off(settings.moveevent, $(this).data.callee);
    }
  };

  $.event.special.tapend = {
    setup: function () {
      var thisObject = this;
      var $this = $(thisObject);

      $this.on(settings.endevent, function tapEndFunc(e) {
        $this.data('callee', tapEndFunc);

        var origEvent = e.originalEvent;
        var touchData = {
          'position': {
            'x': (settings.touch_capable) ? origEvent.changedTouches[0].screenX : e.screenX,
            'y': (settings.touch_capable) ? origEvent.changedTouches[0].screenY : e.screenY
          },
          'offset': {
            'x': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageX - ($this.offset() ? $this.offset().left : 0)) : Math.round(e.pageX - ($this.offset() ? $this.offset().left : 0)),
            'y': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageY - ($this.offset() ? $this.offset().top : 0)) : Math.round(e.pageY - ($this.offset() ? $this.offset().top : 0))
          },
          'time': Date.now(),
          'target': e.target
        };
        triggerCustomEvent(thisObject, 'tapend', e, touchData);
        return true;
      });
    },
    remove: function () {
      $(this).off(settings.endevent, $(this).data.callee);
    }
  };

  $.event.special.taphold = {
    setup: function () {
      var thisObject = this;
      var $this = $(thisObject);
      var origTarget;
      var start_pos = {
        x: 0,
        y: 0
      };
      var end_x = 0;
      var end_y = 0;

      $this.on(settings.startevent, function tapHoldFunc1(e) {
        if (e.which && e.which !== 1) {
          return false;
        } else {
          $this.data('tapheld', false);
          origTarget = e.target;

          var origEvent = e.originalEvent;
          var start_time = Date.now();
          var startPosition = {
            'x': (settings.touch_capable) ? origEvent.touches[0].screenX : e.screenX,
            'y': (settings.touch_capable) ? origEvent.touches[0].screenY : e.screenY
          };
          var startOffset = {
            'x': (settings.touch_capable) ? origEvent.touches[0].pageX - origEvent.touches[0].target.offsetLeft : e.offsetX,
            'y': (settings.touch_capable) ? origEvent.touches[0].pageY - origEvent.touches[0].target.offsetTop : e.offsetY
          };

          start_pos.x = (e.originalEvent.targetTouches) ? e.originalEvent.targetTouches[0].pageX : e.pageX;
          start_pos.y = (e.originalEvent.targetTouches) ? e.originalEvent.targetTouches[0].pageY : e.pageY;

          end_x = start_pos.x;
          end_y = start_pos.y;

          var ele_threshold = ($this.parent().data('threshold')) ? $this.parent().data('threshold') : $this.data('threshold');
          var threshold = (typeof ele_threshold !== 'undefined' && ele_threshold !== false && parseInt(ele_threshold)) ? parseInt(ele_threshold) : settings.taphold_threshold;

          settings.hold_timer = window.setTimeout(function () {
            var diff_x = (start_pos.x - end_x);
            var diff_y = (start_pos.y - end_y);

            if (e.target == origTarget && ((start_pos.x == end_x && start_pos.y == end_y) || (diff_x >= -(settings.tap_pixel_range) && diff_x <= settings.tap_pixel_range && diff_y >= -(settings.tap_pixel_range) && diff_y <= settings.tap_pixel_range))) {
              $this.data('tapheld', true);

              var end_time = Date.now();
              var endPosition = {
                'x': (settings.touch_capable) ? origEvent.touches[0].screenX : e.screenX,
                'y': (settings.touch_capable) ? origEvent.touches[0].screenY : e.screenY
              };
              var endOffset = {
                'x': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageX - ($this.offset() ? $this.offset().left : 0)) : Math.round(e.pageX - ($this.offset() ? $this.offset().left : 0)),
                'y': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageY - ($this.offset() ? $this.offset().top : 0)) : Math.round(e.pageY - ($this.offset() ? $this.offset().top : 0))
              };
              var duration = end_time - start_time;
              var touchData = {
                'startTime': start_time,
                'endTime': end_time,
                'startPosition': startPosition,
                'startOffset': startOffset,
                'endPosition': endPosition,
                'endOffset': endOffset,
                'duration': duration,
                'target': e.target
              };

              $this.data('callee1', tapHoldFunc1);
              triggerCustomEvent(thisObject, 'taphold', e, touchData);
            }
          }, threshold);

          return true;
        }
      }).on(settings.endevent, function tapHoldFunc2() {
        $this.data('callee2', tapHoldFunc2);
        $this.data('tapheld', false);
        window.clearTimeout(settings.hold_timer);
      })
      .on(settings.moveevent, function tapHoldFunc3(e) {
        $this.data('callee3', tapHoldFunc3);

        end_x = (e.originalEvent.targetTouches) ? e.originalEvent.targetTouches[0].pageX : e.pageX;
        end_y = (e.originalEvent.targetTouches) ? e.originalEvent.targetTouches[0].pageY : e.pageY;
      });
    },
    remove: function () {
      $(this).off(settings.startevent, $(this).data.callee1).off(settings.endevent, $(this).data.callee2).off(settings.moveevent, $(this).data.callee3);
    }
  };

  $.event.special.doubletap = {
    setup: function () {
      var thisObject = this;
      var $this = $(thisObject);
      var origTarget;
      var action;
      var firstTap = null;
      var origEvent;
      var cooloff;
      var cooling = false;

      $this.on(settings.startevent, function doubleTapFunc1(e) {
        if (e.which && e.which !== 1) return false;

        $this.data('doubletapped', false);
        origTarget = e.target;

        $this.data('callee1', doubleTapFunc1);
        origEvent = e.originalEvent;

        if (!firstTap) {
          firstTap = {
            'position': {
              'x': (settings.touch_capable) ? origEvent.touches[0].screenX : e.screenX,
              'y': (settings.touch_capable) ? origEvent.touches[0].screenY : e.screenY
            },
            'offset': {
              'x': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageX - ($this.offset() ? $this.offset().left : 0)) : Math.round(e.pageX - ($this.offset() ? $this.offset().left : 0)),
              'y': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageY - ($this.offset() ? $this.offset().top : 0)) : Math.round(e.pageY - ($this.offset() ? $this.offset().top : 0))
            },
            'time': Date.now(),
            'target': e.target,
            'element': e.originalEvent.srcElement,
            'index': $(e.target).index()
          };
        }

        return true;
      }).on(settings.endevent, function doubleTapFunc2(e) {
        var now = Date.now();
        var lastTouch = $this.data('lastTouch') || now + 1;
        var delta = now - lastTouch;

        window.clearTimeout(action);
        $this.data('callee2', doubleTapFunc2);

        if (delta < settings.doubletap_int && ($(e.target).index() == firstTap.index) && delta > 100) {
          $this.data('doubletapped', true);
          window.clearTimeout(settings.tap_timer);

          var lastTap = {
            'position': {
              'x': (settings.touch_capable) ? e.originalEvent.changedTouches[0].screenX : e.screenX,
              'y': (settings.touch_capable) ? e.originalEvent.changedTouches[0].screenY : e.screenY
            },
            'offset': {
              'x': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageX - ($this.offset() ? $this.offset().left : 0)) : Math.round(e.pageX - ($this.offset() ? $this.offset().left : 0)),
              'y': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageY - ($this.offset() ? $this.offset().top : 0)) : Math.round(e.pageY - ($this.offset() ? $this.offset().top : 0))
            },
            'time': Date.now(),
            'target': e.target,
            'element': e.originalEvent.srcElement,
            'index': $(e.target).index()
          };

          var touchData = {
            'firstTap': firstTap,
            'secondTap': lastTap,
            'interval': lastTap.time - firstTap.time
          };

          if (!cooling) {
            triggerCustomEvent(thisObject, 'doubletap', e, touchData);
            firstTap = null;
          }

          cooling = true;
          cooloff = window.setTimeout(function () {
            cooling = false;
          }, settings.doubletap_int);
        } else {
          $this.data('lastTouch', now);
          action = window.setTimeout(function () {
            firstTap = null;
            window.clearTimeout(action);
          }, settings.doubletap_int, [e]);
        }

        $this.data('lastTouch', now);
      });
    },
    remove: function () {
      $(this).off(settings.startevent, $(this).data.callee1).off(settings.endevent, $(this).data.callee2);
    }
  };

  $.event.special.singletap = {
    setup: function () {
      var thisObject = this;
      var $this = $(thisObject);
      var origTarget = null;
      var startTime = null;
      var start_pos = {
        x: 0,
        y: 0
      };

      $this.on(settings.startevent, function singleTapFunc1(e) {
        if (e.which && e.which !== 1) {
          return false;
        } else {
          startTime = Date.now();
          origTarget = e.target;
          $this.data('callee1', singleTapFunc1);

          start_pos.x = (e.originalEvent.targetTouches) ? e.originalEvent.targetTouches[0].pageX : e.pageX;
          start_pos.y = (e.originalEvent.targetTouches) ? e.originalEvent.targetTouches[0].pageY : e.pageY;

          return true;
        }
      }).on(settings.endevent, function singleTapFunc2(e) {
        $this.data('callee2', singleTapFunc2);

        if (e.target == origTarget) {
          var end_pos_x = (e.originalEvent.changedTouches) ? e.originalEvent.changedTouches[0].pageX : e.pageX;
          var end_pos_y = (e.originalEvent.changedTouches) ? e.originalEvent.changedTouches[0].pageY : e.pageY;

          settings.tap_timer = window.setTimeout(function () {
            var diff_x = (start_pos.x - end_pos_x);
            var diff_y = (start_pos.y - end_pos_y);

            if (!$this.data('doubletapped') && !$this.data('tapheld') && (((start_pos.x == end_pos_x) && (start_pos.y == end_pos_y)) || (diff_x >= -(settings.tap_pixel_range) && diff_x <= settings.tap_pixel_range && diff_y >= -(settings.tap_pixel_range) && diff_y <= settings.tap_pixel_range))) {
              var origEvent = e.originalEvent;
              var touchData = {
                'position': {
                  'x': (settings.touch_capable) ? origEvent.changedTouches[0].screenX : e.screenX,
                  'y': (settings.touch_capable) ? origEvent.changedTouches[0].screenY : e.screenY
                },
                'offset': {
                  'x': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageX - ($this.offset() ? $this.offset().left : 0)) : Math.round(e.pageX - ($this.offset() ? $this.offset().left : 0)),
                  'y': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageY - ($this.offset() ? $this.offset().top : 0)) : Math.round(e.pageY - ($this.offset() ? $this.offset().top : 0))
                },
                'time': Date.now(),
                'target': e.target
              };

              if ((touchData.time - startTime) < settings.taphold_threshold) {
                triggerCustomEvent(thisObject, 'singletap', e, touchData);
              }
            }
          }, settings.doubletap_int);
        }
      });
    },
    remove: function () {
      $(this).off(settings.startevent, $(this).data.callee1).off(settings.endevent, $(this).data.callee2);
    }
  };

  $.event.special.tap = {
    setup: function () {
      var thisObject = this;
      var $this = $(thisObject);
      var started = false;
      var origTarget = null;
      var start_time;
      var start_pos = {
        x: 0,
        y: 0
      };
      var touches;

      $this.on(settings.startevent, function tapFunc1(e) {
        $this.data('callee1', tapFunc1);

        if ( e.which && e.which !== 1 ) {
          return false;
        } else {
          started = true;
          start_pos.x = (e.originalEvent.targetTouches) ? e.originalEvent.targetTouches[0].pageX : e.pageX;
          start_pos.y = (e.originalEvent.targetTouches) ? e.originalEvent.targetTouches[0].pageY : e.pageY;
          start_time = Date.now();
          origTarget = e.target;

          touches = (e.originalEvent.targetTouches) ? e.originalEvent.targetTouches : [ e ];
          return true;
        }
      }).on(settings.endevent, function tapFunc2(e) {
          $this.data('callee2', tapFunc2);

          var end_x = (e.originalEvent.targetTouches) ? e.originalEvent.changedTouches[0].pageX : e.pageX;
          var end_y = (e.originalEvent.targetTouches) ? e.originalEvent.changedTouches[0].pageY : e.pageY;
          var diff_x = (start_pos.x - end_x);
          var diff_y = (start_pos.y - end_y);
          var eventName;

          if (origTarget == e.target && started && ((Date.now() - start_time) < settings.taphold_threshold) && ((start_pos.x == end_x && start_pos.y == end_y) || (diff_x >= -(settings.tap_pixel_range) && diff_x <= settings.tap_pixel_range && diff_y >= -(settings.tap_pixel_range) && diff_y <= settings.tap_pixel_range))) {
            var origEvent = e.originalEvent;
            var touchData = [];

            for ( var i = 0; i < touches.length; i++) {
              if (settings.touch_capable && !origEvent.changedTouches[i]) continue;

              var touch = {
                'position': {
                  'x': (settings.touch_capable) ? origEvent.changedTouches[i].screenX : e.screenX,
                  'y': (settings.touch_capable) ? origEvent.changedTouches[i].screenY : e.screenY
                },
                'offset': {
                  'x': (settings.touch_capable) ? Math.round(origEvent.changedTouches[i].pageX - ($this.offset() ? $this.offset().left : 0)) : Math.round(e.pageX - ($this.offset() ? $this.offset().left : 0)),
                  'y': (settings.touch_capable) ? Math.round(origEvent.changedTouches[i].pageY - ($this.offset() ? $this.offset().top : 0)) : Math.round(e.pageY - ($this.offset() ? $this.offset().top : 0))
                },
                'time': Date.now(),
                'target': e.target
              };

              touchData.push( touch );
            }

            triggerCustomEvent(thisObject, 'tap', e, touchData);
          }
      });
    },
    remove: function () {
      $(this).off(settings.startevent, $(this).data.callee1).off(settings.endevent, $(this).data.callee2);
    }
  };

  $.event.special.swipe = {
      setup: function () {
        var thisObject = this;
        var $this = $(thisObject);
        var started = false;
        var hasSwiped = false;
        var originalCoord = {
          x: 0,
          y: 0
        };
        var finalCoord = {
          x: 0,
          y: 0
        };
        var startEvnt;

        function touchStart(e) {
          $this = $(e.currentTarget);
          $this.data('callee1', touchStart);
          originalCoord.x = (e.originalEvent.targetTouches) ? e.originalEvent.targetTouches[0].pageX : e.pageX;
          originalCoord.y = (e.originalEvent.targetTouches) ? e.originalEvent.targetTouches[0].pageY : e.pageY;
          finalCoord.x = originalCoord.x;
          finalCoord.y = originalCoord.y;

          started = true;
          var origEvent = e.originalEvent;
          startEvnt = {
            'position': {
              'x': (settings.touch_capable) ? origEvent.touches[0].screenX : e.screenX,
              'y': (settings.touch_capable) ? origEvent.touches[0].screenY : e.screenY
            },
            'offset': {
              'x': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageX - ($this.offset() ? $this.offset().left : 0)) : Math.round(e.pageX - ($this.offset() ? $this.offset().left : 0)),
              'y': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageY - ($this.offset() ? $this.offset().top : 0)) : Math.round(e.pageY - ($this.offset() ? $this.offset().top : 0))
            },
            'time': Date.now(),
            'target': e.target
          };
        }

        function touchMove(e) {
          $this = $(e.currentTarget);
          $this.data('callee2', touchMove);
          finalCoord.x = (e.originalEvent.targetTouches) ? e.originalEvent.targetTouches[0].pageX : e.pageX;
          finalCoord.y = (e.originalEvent.targetTouches) ? e.originalEvent.targetTouches[0].pageY : e.pageY;

          var swipedir;

          var ele_x_threshold = ($this.parent().data('xthreshold')) ? $this.parent().data('xthreshold') : $this.data('xthreshold');
          var ele_y_threshold = ($this.parent().data('ythreshold')) ? $this.parent().data('ythreshold') : $this.data('ythreshold');
          var h_threshold = (typeof ele_x_threshold !== 'undefined' && ele_x_threshold !== false && parseInt(ele_x_threshold)) ? parseInt(ele_x_threshold) : settings.swipe_h_threshold;
          var v_threshold = (typeof ele_y_threshold !== 'undefined' && ele_y_threshold !== false && parseInt(ele_y_threshold)) ? parseInt(ele_y_threshold) : settings.swipe_v_threshold;

          if (originalCoord.y > finalCoord.y && (originalCoord.y - finalCoord.y > v_threshold)) {
            swipedir = 'swipeup';
          }
          if (originalCoord.x < finalCoord.x && (finalCoord.x - originalCoord.x > h_threshold)) {
            swipedir = 'swiperight';
          }
          if (originalCoord.y < finalCoord.y && (finalCoord.y - originalCoord.y > v_threshold)) {
            swipedir = 'swipedown';
          }
          if (originalCoord.x > finalCoord.x && (originalCoord.x - finalCoord.x > h_threshold)) {
            swipedir = 'swipeleft';
          }
          if (swipedir != undefined && started) {
            originalCoord.x = 0;
            originalCoord.y = 0;
            finalCoord.x = 0;
            finalCoord.y = 0;
            started = false;

            var origEvent = e.originalEvent;
            var endEvnt = {
              'position': {
                'x': (settings.touch_capable) ? origEvent.touches[0].screenX : e.screenX,
                'y': (settings.touch_capable) ? origEvent.touches[0].screenY : e.screenY
              },
              'offset': {
                'x': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageX - ($this.offset() ? $this.offset().left : 0)) : Math.round(e.pageX - ($this.offset() ? $this.offset().left : 0)),
                'y': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageY - ($this.offset() ? $this.offset().top : 0)) : Math.round(e.pageY - ($this.offset() ? $this.offset().top : 0))
              },
              'time': Date.now(),
              'target': e.target
            };

            var xAmount = Math.abs(startEvnt.position.x - endEvnt.position.x);
            var yAmount = Math.abs(startEvnt.position.y - endEvnt.position.y);

            var touchData = {
              'startEvnt': startEvnt,
              'endEvnt': endEvnt,
              'direction': swipedir.replace('swipe', ''),
              'xAmount': xAmount,
              'yAmount': yAmount,
              'duration': endEvnt.time - startEvnt.time
            };

            hasSwiped = true;
            $this.trigger('swipe', touchData).trigger(swipedir, touchData);
          }
        }

        function touchEnd(e) {
          $this = $(e.currentTarget);
          var swipedir = '';

          $this.data('callee3', touchEnd);

          if (hasSwiped) {
            var ele_x_threshold = $this.data('xthreshold');
            var ele_y_threshold = $this.data('ythreshold');
            var h_threshold = (typeof ele_x_threshold !== 'undefined' && ele_x_threshold !== false && parseInt(ele_x_threshold)) ? parseInt(ele_x_threshold) : settings.swipe_h_threshold;
            var v_threshold = (typeof ele_y_threshold !== 'undefined' && ele_y_threshold !== false && parseInt(ele_y_threshold)) ? parseInt(ele_y_threshold) : settings.swipe_v_threshold;
            var origEvent = e.originalEvent;
            var endEvnt = {
              'position': {
                'x': (settings.touch_capable) ? origEvent.changedTouches[0].screenX : e.screenX,
                'y': (settings.touch_capable) ? origEvent.changedTouches[0].screenY : e.screenY
              },
              'offset': {
                'x': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageX - ($this.offset() ? $this.offset().left : 0)) : Math.round(e.pageX - ($this.offset() ? $this.offset().left : 0)),
                'y': (settings.touch_capable) ? Math.round(origEvent.changedTouches[0].pageY - ($this.offset() ? $this.offset().top : 0)) : Math.round(e.pageY - ($this.offset() ? $this.offset().top : 0))
              },
              'time': Date.now(),
              'target': e.target
            };

            if (startEvnt.position.y > endEvnt.position.y && (startEvnt.position.y - endEvnt.position.y > v_threshold)) {
              swipedir = 'swipeup';
            }
            if (startEvnt.position.x < endEvnt.position.x && (endEvnt.position.x - startEvnt.position.x > h_threshold)) {
              swipedir = 'swiperight';
            }
            if (startEvnt.position.y < endEvnt.position.y && (endEvnt.position.y - startEvnt.position.y > v_threshold)) {
              swipedir = 'swipedown';
            }
            if (startEvnt.position.x > endEvnt.position.x && (startEvnt.position.x - endEvnt.position.x > h_threshold)) {
              swipedir = 'swipeleft';
            }

            var xAmount = Math.abs(startEvnt.position.x - endEvnt.position.x);
            var yAmount = Math.abs(startEvnt.position.y - endEvnt.position.y);

            var touchData = {
              'startEvnt': startEvnt,
              'endEvnt': endEvnt,
              'direction': swipedir.replace('swipe', ''),
              'xAmount': xAmount,
              'yAmount': yAmount,
              'duration': endEvnt.time - startEvnt.time
            };

            $this.trigger('swipeend', touchData);
          }

        started = false;
        hasSwiped = false;
      }

      $this.on(settings.startevent, touchStart);
      $this.on(settings.moveevent, touchMove);
      $this.on(settings.endevent, touchEnd);
    },
    remove: function () {
      $(this).off(settings.startevent, $(this).data.callee1).off(settings.moveevent, $(this).data.callee2).off(settings.endevent, $(this).data.callee3);
    }
  };

  $.event.special.scrollstart = {
    setup: function () {
      var thisObject = this;
      var $this = $(thisObject);
      var scrolling;
      var timer;

      function trigger(event, state) {
        scrolling = state;
        triggerCustomEvent(thisObject, scrolling ? 'scrollstart' : 'scrollend', event);
      }

      $this.on(settings.scrollevent, function scrollFunc(event) {
        $this.data('callee', scrollFunc);

        if (!scrolling) trigger(event, true);

        clearTimeout(timer);
        timer = setTimeout(function () {
          trigger(event, false);
        }, 50);
      });
    },
    remove: function () {
      $(this).off(settings.scrollevent, $(this).data.callee);
    }
  };

  var win = $(window);
  var special_event;
  var get_orientation;
  var last_orientation;
  var initial_orientation_is_landscape;
  var initial_orientation_is_default;
  var portrait_map = {
    '0': true,
    '180': true
  };

  if (settings.orientation_support) {
    var ww = window.innerWidth || win.width();
    var wh = window.innerHeight || win.height();
    var landscape_threshold = 50;

    initial_orientation_is_landscape = ww > wh && (ww - wh) > landscape_threshold;
    initial_orientation_is_default = portrait_map[window.orientation];

    if ((initial_orientation_is_landscape && initial_orientation_is_default) || (!initial_orientation_is_landscape && !initial_orientation_is_default)) {
      portrait_map = {
        '-90': true,
        '90': true
      };
    }
  }

  $.event.special.orientationchange = special_event = {
    setup: function () {
      if (settings.orientation_support) return false;

      last_orientation = get_orientation();

      win.on('throttledresize', handler);
      return true;
    },
    teardown: function () {
      if (settings.orientation_support) return false;

      win.off('throttledresize', handler);
      return true;
    },
    add: function (handleObj) {
      var old_handler = handleObj.handler;

      handleObj.handler = function (event) {
        event.orientation = get_orientation();
        return old_handler.apply(this, arguments);
      };
    }
  };

  function handler() {
    var orientation = get_orientation();

    if (orientation !== last_orientation) {
      last_orientation = orientation;
      win.trigger('orientationchange');
    }
  }

  $.event.special.orientationchange.orientation = get_orientation = function () {
    var isPortrait = true;
    var elem = document.documentElement;

    if (settings.orientation_support) {
      isPortrait = portrait_map[window.orientation];
    } else {
      isPortrait = elem && elem.clientWidth / elem.clientHeight < 1.1;
    }

    return isPortrait ? 'portrait' : 'landscape';
  };

  $.event.special.throttledresize = {
    setup: function () {
      $(this).on('resize', throttle_handler);
    },
    teardown: function () {
      $(this).off('resize', throttle_handler);
    }
  };

  var throttle = 250;
  var throttle_handler = function () {
    curr = Date.now();
    diff = curr - lastCall;

    if (diff >= throttle) {
      lastCall = curr;
      $(this).trigger('throttledresize');
    } else {
      if (heldCall) window.clearTimeout(heldCall);

      heldCall = window.setTimeout(handler, throttle - diff);
    }
  };
  var lastCall = 0;
  var heldCall;
  var curr;
  var diff;

  function triggerCustomEvent(obj, eventType, event, touchData) {
    var originalType = event.type;
    event.type = eventType;

    $.event.dispatch.call(obj, event, touchData);
    event.type = originalType;
  }

  $.each({
    scrollend: 'scrollstart',
    swipeup: 'swipe',
    swiperight: 'swipe',
    swipedown: 'swipe',
    swipeleft: 'swipe',
    swipeend: 'swipe',
    tap2: 'tap'
  }, function (e, srcE) {
    $.event.special[e] = {
      setup: function () {
        $(this).on(srcE, $.noop);
      }
    };
  });

}(jQuery));