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\"gesturestart\",\n        GESTURECHANGE = \"gesturechange\",\n        GESTUREEND = \"gestureend\",\n        GESTURETAP = \"gesturetap\";\n\n    var THRESHOLD = {\n        \"api\": 0,\n        \"touch\": 0,\n        \"mouse\": 9,\n        \"pointer\": 9\n    };\n\n    var ENABLE_GLOBAL_SURFACE = (!support.touch || support.mouseAndTouchPresent);\n\n    function touchDelta(touch1, touch2) {\n        var x1 = touch1.x.location,\n            y1 = touch1.y.location,\n            x2 = touch2.x.location,\n            y2 = touch2.y.location,\n            dx = x1 - x2,\n            dy = y1 - y2;\n\n        return {\n            center: {\n               x: (x1 + x2) / 2,\n               y: (y1 + y2) / 2\n            },\n\n            distance: Math.sqrt(dx * dx + dy * dy)\n        };\n    }\n\n    function getTouches(e) {\n        var touches = [],\n            originalEvent = e.originalEvent,\n            currentTarget = e.currentTarget,\n            idx = 0, length,\n            changedTouches,\n            touch;\n\n        if (e.api) {\n            touches.push({\n                id: 2, // hardcoded ID for API call;\n                event: e,\n                target: e.target,\n                currentTarget: e.target,\n                location: e,\n                type: \"api\"\n            });\n        }\n        else if (e.type.match(/touch/)) {\n            changedTouches = originalEvent ? originalEvent.changedTouches : [];\n            for (length = changedTouches.length; idx < length; idx ++) {\n                touch = changedTouches[idx];\n                touches.push({\n                    location: touch,\n                    event: e,\n                    target: touch.target,\n                    currentTarget: currentTarget,\n                    id: touch.identifier,\n                    type: \"touch\"\n                });\n            }\n        }\n        else if (support.pointers || support.msPointers) {\n            touches.push({\n                location: originalEvent,\n                event: e,\n                target: e.target,\n                currentTarget: currentTarget,\n                id: originalEvent.pointerId,\n                type: \"pointer\"\n            });\n        } else {\n            touches.push({\n                id: 1, // hardcoded ID for mouse event;\n                event: e,\n                target: e.target,\n                currentTarget: currentTarget,\n                location: e,\n                type: \"mouse\"\n            });\n        }\n\n        return touches;\n    }\n\n    var TouchAxis = Class.extend({\n        init: function(axis, location) {\n            var that = this;\n\n            that.axis = axis;\n\n            that._updateLocationData(location);\n\n            that.startLocation = that.location;\n            that.velocity = that.delta = 0;\n            that.timeStamp = now();\n        },\n\n        move: function(location) {\n            var that = this,\n                offset = location[\"page\" + that.axis],\n                timeStamp = now(),\n                timeDelta = (timeStamp - that.timeStamp) || 1; // Firing manually events in tests can make this 0;\n\n            if (!offset && invalidZeroEvents) {\n                return;\n            }\n\n            that.delta = offset - that.location;\n\n            that._updateLocationData(location);\n\n            that.initialDelta = offset - that.startLocation;\n            that.velocity = that.delta / timeDelta;\n            that.timeStamp = timeStamp;\n        },\n\n        _updateLocationData: function(location) {\n            var that = this, axis = that.axis;\n\n            that.location = location[\"page\" + axis];\n            that.client = location[\"client\" + axis];\n            that.screen = location[\"screen\" + axis];\n        }\n    });\n\n    var Touch = Class.extend({\n        init: function(userEvents, target, touchInfo) {\n            extend(this, {\n                x: new TouchAxis(\"X\", touchInfo.location),\n                y: new TouchAxis(\"Y\", touchInfo.location),\n                type: touchInfo.type,\n                useClickAsTap: userEvents.useClickAsTap,\n                threshold: userEvents.threshold || THRESHOLD[touchInfo.type],\n                userEvents: userEvents,\n                target: target,\n                currentTarget: touchInfo.currentTarget,\n                initialTouch: touchInfo.target,\n                id: touchInfo.id,\n                pressEvent: touchInfo,\n                _clicks: userEvents._clicks,\n                supportDoubleTap: userEvents.supportDoubleTap,\n                _moved: false,\n                _finished: false\n            });\n        },\n\n        press: function() {\n            this._holdTimeout = setTimeout(this._hold.bind(this), this.userEvents.minHold);\n            this._trigger(PRESS, this.pressEvent);\n        },\n\n        _tap: function(touchInfo) {\n            var that = this;\n            that.userEvents._clicks++;\n            if (that.userEvents._clicks == 1) {\n                that._clickTimeout = setTimeout(function() {\n                    if (that.userEvents._clicks == 1) {\n                        that._trigger(TAP, touchInfo);\n                    }\n                    else {\n                        that._trigger(DOUBLETAP, touchInfo);\n                    }\n                    that.userEvents._clicks = 0;\n                }, CLICK_DELAY);\n            }\n        },\n\n        _hold: function() {\n            this._trigger(HOLD, this.pressEvent);\n        },\n\n        move: function(touchInfo) {\n            var that = this;\n            var preventMove = touchInfo.type !== \"api\" && that.userEvents._shouldNotMove;\n\n            if (that._finished || preventMove) { return; }\n\n            that.x.move(touchInfo.location);\n            that.y.move(touchInfo.location);\n\n            if (!that._moved) {\n                if (that._withinIgnoreThreshold()) {\n                    return;\n                }\n\n                if (!UserEvents.current || UserEvents.current === that.userEvents) {\n                    that._start(touchInfo);\n                } else {\n                    return that.dispose();\n                }\n            }\n\n            // Event handlers may cancel the drag in the START event handler, hence the double check for pressed.\n            if (!that._finished) {\n                that._trigger(MOVE, touchInfo);\n            }\n        },\n\n        end: function(touchInfo) {\n            this.endTime = now();\n\n            if (this._finished) { return; }\n\n            // Mark the object as finished if there are blocking operations in the event handlers (alert/confirm)\n            this._finished = true;\n\n            this._trigger(RELEASE, touchInfo); // Release should be fired before TAP (as click is after mouseup/touchend)\n\n            if (this._moved) {\n                this._trigger(END, touchInfo);\n            } else {\n                if (!this.useClickAsTap) {\n                    if (this.supportDoubleTap) {\n                        this._tap(touchInfo);\n                    }\n                    else {\n                        this._trigger(TAP, touchInfo);\n                    }\n                }\n            }\n\n            clearTimeout(this._holdTimeout);\n\n            this.dispose();\n        },\n\n        dispose: function() {\n            var userEvents = this.userEvents,\n                activeTouches = userEvents.touches;\n\n            this._finished = true;\n            this.pressEvent = null;\n            clearTimeout(this._holdTimeout);\n\n            activeTouches.splice($.inArray(this, activeTouches), 1);\n        },\n\n        skip: function() {\n            this.dispose();\n        },\n\n        cancel: function() {\n            this.dispose();\n        },\n\n        isMoved: function() {\n            return this._moved;\n        },\n\n        _start: function(touchInfo) {\n            clearTimeout(this._holdTimeout);\n\n            this.startTime = now();\n            this._moved = true;\n            this._trigger(START, touchInfo);\n        },\n\n        _trigger: function(name, touchInfo) {\n            var that = this,\n                jQueryEvent = touchInfo.event,\n                data = {\n                    touch: that,\n                    x: that.x,\n                    y: that.y,\n                    target: that.target,\n                    event: jQueryEvent\n                };\n\n            if (that.userEvents.notify(name, data)) {\n                jQueryEvent.preventDefault();\n            }\n        },\n\n        _withinIgnoreThreshold: function() {\n            var xDelta = this.x.initialDelta,\n                yDelta = this.y.initialDelta;\n\n            return Math.sqrt(xDelta * xDelta + yDelta * yDelta) <= this.threshold;\n        }\n    });\n\n    function withEachUpEvent(callback) {\n        var downEvents = kendo.eventMap.up.split(\" \"),\n            idx = 0,\n            length = downEvents.length;\n\n        for (; idx < length; idx ++) {\n            callback(downEvents[idx]);\n        }\n    }\n\n    var UserEvents = Observable.extend({\n        init: function(element, options) {\n            var that = this,\n                filter,\n                ns = kendo.guid();\n\n            options = options || {};\n            filter = that.filter = options.filter;\n            that.threshold = options.threshold || DEFAULT_THRESHOLD;\n            that.minHold = options.minHold || DEFAULT_MIN_HOLD;\n            that.touches = [];\n            that._maxTouches = options.multiTouch ? 2 : 1;\n            that.allowSelection = options.allowSelection;\n            that.captureUpIfMoved = options.captureUpIfMoved;\n            that.useClickAsTap = !options.fastTap && !support.delayedClick();\n            that.eventNS = ns;\n            that._clicks = 0;\n            that.supportDoubleTap = options.supportDoubleTap;\n\n            element = $(element).handler(that);\n            Observable.fn.init.call(that);\n\n            extend(that, {\n                element: element,\n                // the touch events lock to the element anyway, so no need for the global setting\n                surface: options.global && ENABLE_GLOBAL_SURFACE ? $(element[0].ownerDocument.documentElement) : $(options.surface || element),\n                stopPropagation: options.stopPropagation,\n                pressed: false\n            });\n\n            that.surface.handler(that)\n                .on(kendo.applyEventMap(\"move\", ns), \"_move\")\n                .on(kendo.applyEventMap(\"up cancel\", ns), \"_end\");\n\n            element.on(kendo.applyEventMap(\"down\", ns), filter, \"_start\");\n\n            if (that.useClickAsTap) {\n                element.on(kendo.applyEventMap(\"click\", ns), filter, \"_click\");\n            }\n\n            if (support.pointers || support.msPointers) {\n                //touch-action:none will not work for IE10\n                if (support.browser.version < 11) {\n                    var defaultAction = \"pinch-zoom double-tap-zoom\";\n                    element.css(\"-ms-touch-action\", options.touchAction && options.touchAction != \"none\" ? defaultAction + \" \" + options.touchAction : defaultAction);\n                } else {\n                    element.css(\"touch-action\", options.touchAction || \"none\");\n                }\n            }\n\n            if (options.preventDragEvent) {\n                element.on(kendo.applyEventMap(\"dragstart\", ns), kendo.preventDefault);\n            }\n\n            element.on(kendo.applyEventMap(\"mousedown\", ns), filter, { root: element }, \"_select\");\n\n            if (that.captureUpIfMoved && support.eventCapture) {\n                var surfaceElement = that.surface[0],\n                    preventIfMovingProxy = that.preventIfMoving.bind(that);\n\n                withEachUpEvent(function(eventName) {\n                    surfaceElement.addEventListener(eventName, preventIfMovingProxy, true);\n                });\n            }\n\n            that.bind([\n            PRESS,\n            HOLD,\n            TAP,\n            DOUBLETAP,\n            START,\n            MOVE,\n            END,\n            RELEASE,\n            CANCEL,\n            GESTURESTART,\n            GESTURECHANGE,\n            GESTUREEND,\n            GESTURETAP,\n            SELECT\n            ], options);\n        },\n\n        preventIfMoving: function(e) {\n            if (this._isMoved()) {\n                e.preventDefault();\n            }\n        },\n\n        destroy: function() {\n            var that = this;\n\n            if (that._destroyed) {\n                return;\n            }\n\n            that._destroyed = true;\n\n            if (that.captureUpIfMoved && support.eventCapture) {\n                var surfaceElement = that.surface[0];\n                withEachUpEvent(function(eventName) {\n                    surfaceElement.removeEventListener(eventName, that.preventIfMoving);\n                });\n            }\n\n            that.element.kendoDestroy(that.eventNS);\n            that.surface.kendoDestroy(that.eventNS);\n            that.element.removeData(\"handler\");\n            that.surface.removeData(\"handler\");\n            that._disposeAll();\n\n            that.unbind();\n            delete that.surface;\n            delete that.element;\n            delete that.currentTarget;\n        },\n\n        capture: function() {\n            UserEvents.current = this;\n        },\n\n        cancel: function() {\n            this._disposeAll();\n            this.trigger(CANCEL);\n        },\n\n        notify: function(eventName, data) {\n            var that = this,\n                touches = that.touches;\n\n            if (this._isMultiTouch()) {\n                switch (eventName) {\n                    case MOVE:\n                        eventName = GESTURECHANGE;\n                        break;\n                    case END:\n                        eventName = GESTUREEND;\n                        break;\n                    case TAP:\n                        eventName = GESTURETAP;\n                        break;\n                }\n\n                extend(data, { touches: touches }, touchDelta(touches[0], touches[1]));\n            }\n\n            return this.trigger(eventName, extend(data, { type: eventName }));\n        },\n\n        // API\n        press: function(x, y, target) {\n            this._apiCall(\"_start\", x, y, target);\n        },\n\n        move: function(x, y) {\n            this._apiCall(\"_move\", x, y);\n        },\n\n        end: function(x, y) {\n            this._apiCall(\"_end\", x, y);\n        },\n\n        _isMultiTouch: function() {\n            return this.touches.length > 1;\n        },\n\n        _maxTouchesReached: function() {\n            return this.touches.length >= this._maxTouches;\n        },\n\n        _disposeAll: function() {\n            var touches = this.touches;\n            while (touches.length > 0) {\n                touches.pop().dispose();\n            }\n        },\n\n        _isMoved: function() {\n            return $.grep(this.touches, function(touch) {\n                return touch.isMoved();\n            }).length;\n        },\n\n        _select: function(e) {\n           if (!this.allowSelection || this.trigger(SELECT, { event: e })) {\n               e.preventDefault();\n           }\n        },\n\n        _start: function(e) {\n            var that = this,\n                idx = 0,\n                filter = that.filter,\n                target,\n                touches = getTouches(e),\n                length = touches.length,\n                touch,\n                which = e.which;\n\n            if ((which && which > 1) || (that._maxTouchesReached())) {\n                return;\n            }\n\n            UserEvents.current = null;\n\n            that.currentTarget = e.currentTarget;\n\n            if (that.stopPropagation) {\n                e.stopPropagation();\n            }\n\n            for (; idx < length; idx ++) {\n                if (that._maxTouchesReached()) {\n                    break;\n                }\n\n                touch = touches[idx];\n\n                if (filter) {\n                    target = $(touch.currentTarget); // target.is(filter) ? target : target.closest(filter, that.element);\n                } else {\n                    target = that.element;\n                }\n\n                if (!target.length) {\n                    continue;\n                }\n\n                touch = new Touch(that, target, touch);\n                that.touches.push(touch);\n                touch.press();\n\n                if (that._isMultiTouch()) {\n                    that.notify(\"gesturestart\", {});\n                }\n            }\n        },\n\n        _move: function(e) {\n            this._eachTouch(\"move\", e);\n        },\n\n        _end: function(e) {\n            this._eachTouch(\"end\", e);\n        },\n\n        _click: function(e) {\n            var data = {\n                touch: {\n                    initialTouch: e.target,\n                    target: $(e.currentTarget),\n                    endTime: now(),\n                    x: {\n                        location: e.pageX,\n                        client: e.clientX\n                    },\n                    y: {\n                        location: e.pageY,\n                        client: e.clientY\n                    }\n                },\n                x: e.pageX,\n                y: e.pageY,\n                target: $(e.currentTarget),\n                event: e,\n                type: \"tap\"\n            };\n\n            if (this.trigger(\"tap\", data)) {\n                e.preventDefault();\n            }\n        },\n\n        _eachTouch: function(methodName, e) {\n            var that = this,\n                dict = {},\n                touches = getTouches(e),\n                activeTouches = that.touches,\n                idx,\n                touch,\n                touchInfo,\n                matchingTouch;\n\n            for (idx = 0; idx < activeTouches.length; idx ++) {\n                touch = activeTouches[idx];\n                dict[touch.id] = touch;\n            }\n\n            for (idx = 0; idx < touches.length; idx ++) {\n                touchInfo = touches[idx];\n                matchingTouch = dict[touchInfo.id];\n\n                if (matchingTouch) {\n                    matchingTouch[methodName](touchInfo);\n                }\n            }\n        },\n\n        _apiCall: function(type, x, y, target) {\n            this[type]({\n                api: true,\n                pageX: x,\n                pageY: y,\n                clientX: x,\n                clientY: y,\n                target: $(target || this.element)[0],\n                stopPropagation: $.noop,\n                preventDefault: $.noop\n            });\n        }\n    });\n\n    var ClickMoveClick = Observable.extend({\n        init: function(element, options) {\n            var that = this,\n                filter,\n                ns = kendo.guid();\n\n            options = options || {};\n            filter = that.filter = options.filter;\n            that.touches = [];\n            that._maxTouches = 1;\n            that.eventNS = ns;\n            that._downStarted = 0;\n\n            element = $(element).handler(that);\n            Observable.fn.init.call(that);\n\n            extend(that, {\n                element: element,\n                // the touch events lock to the element anyway, so no need for the global setting\n                surface: options.global && ENABLE_GLOBAL_SURFACE ? $(element[0].ownerDocument.documentElement) : $(options.surface || element),\n                stopPropagation: options.stopPropagation,\n                pressed: false\n            });\n\n            that.surface.handler(that)\n                .on(kendo.applyEventMap(\"move\", ns), \"_move\")\n                .on(kendo.applyEventMap(\"cancel up\", ns), \"cancel\");\n\n            element.on(kendo.applyEventMap(\"down\", ns), filter, \"_down\")\n                .on(kendo.applyEventMap(\"up\", ns), filter, \"_up\");\n\n            that.bind([\n                START,\n                MOVE,\n                END,\n                HOLD,\n                CANCEL,\n                SELECT\n            ], options);\n        },\n\n        _down: function(e) {\n            if (e.which && e.which > 1) {\n                this.cancel();\n            } else {\n                this._downStarted = new Date().getTime();\n                this._downTarget = e.target;\n            }\n        },\n\n        _up: function(e) {\n            var currentMilestone = new Date().getTime(),\n                currentTarget = e.target;\n\n            if ((!e.which || e.which === 1) &&\n                currentMilestone < this._downStarted + CLICK_DELAY &&\n                currentTarget === this._downTarget) {\n                    if (this.touches && this.touches.length > 0) {\n                        this._end(e);\n                    } else {\n                        this._start(e);\n                    }\n\n                    this._preventCancel = true;\n            } else {\n                this.cancel();\n            }\n\n            this._downStarted = 0;\n            this._downTarget = null;\n        },\n\n        destroy: function() {\n            var that = this;\n\n            if (that._destroyed) {\n                return;\n            }\n\n            that._destroyed = true;\n\n            that.element.kendoDestroy(that.eventNS);\n            that.surface.kendoDestroy(that.eventNS);\n            that.element.removeData(\"handler\");\n            that.surface.removeData(\"handler\");\n            that._disposeAll();\n\n            that.unbind();\n            delete that.surface;\n            delete that.element;\n            delete that.currentTarget;\n        },\n\n        capture: function() {\n            ClickMoveClick.current = this;\n        },\n\n        cancel: function() {\n            if (this._preventCancel) {\n                this._preventCancel = false;\n                return;\n            } else if (this.touches && this.touches.length > 0) {\n                this._disposeAll();\n                this.trigger(CANCEL);\n            }\n        },\n\n        notify: function(eventName, data) {\n            data.clickMoveClick = true;\n            return this.trigger(eventName, extend(data, { type: eventName }));\n        },\n\n        _maxTouchesReached: function() {\n            return this.touches.length >= this._maxTouches;\n        },\n\n        _disposeAll: function() {\n            var touches = this.touches;\n\n            while (touches.length > 0) {\n                touches.pop().dispose();\n            }\n        },\n\n        _start: function(e) {\n            var that = this,\n                idx = 0,\n                filter = that.filter,\n                target,\n                touches = getTouches(e),\n                length = touches.length,\n                touch,\n                which = e.which;\n\n            if ((which && which > 1) || (that._maxTouchesReached())) {\n                return;\n            }\n\n            ClickMoveClick.current = null;\n\n            that.currentTarget = e.currentTarget;\n\n            if (that.stopPropagation) {\n                e.stopPropagation();\n            }\n\n            for (; idx < length; idx ++) {\n                if (that._maxTouchesReached()) {\n                    break;\n                }\n\n                touch = touches[idx];\n\n                if (filter) {\n                    target = $(touch.currentTarget);\n                } else {\n                    target = that.element;\n                }\n\n                if (!target.length) {\n                    continue;\n                }\n\n                touch = new Touch(that, target, touch);\n                that.touches.push(touch);\n                touch.press();\n                touch._start(touch);\n            }\n        },\n\n        _move: function(e) {\n            this._eachTouch(\"move\", e);\n        },\n\n        _end: function(e) {\n            this._eachTouch(\"move\", e);\n            this._eachTouch(\"end\", e);\n        },\n\n        _eachTouch: function(methodName, e) {\n            var that = this,\n                dict = {},\n                touches = getTouches(e),\n                activeTouches = that.touches,\n                idx,\n                touch,\n                touchInfo,\n                matchingTouch;\n\n            for (idx = 0; idx < activeTouches.length; idx ++) {\n                touch = activeTouches[idx];\n                dict[touch.id] = touch;\n            }\n\n            for (idx = 0; idx < touches.length; idx ++) {\n                touchInfo = touches[idx];\n                matchingTouch = dict[touchInfo.id];\n\n                if (matchingTouch) {\n                    matchingTouch.x.move(touchInfo.location);\n                    matchingTouch.y.move(touchInfo.location);\n                    matchingTouch[methodName](touchInfo);\n                }\n            }\n        }\n    });\n\n    UserEvents.defaultThreshold = function(value) {\n        DEFAULT_THRESHOLD = value;\n    };\n\n    UserEvents.minHold = function(value) {\n        DEFAULT_MIN_HOLD = value;\n    };\n\n    kendo.getTouches = getTouches;\n    kendo.touchDelta = touchDelta;\n    kendo.UserEvents = UserEvents;\n    kendo.ClickMoveClick = ClickMoveClick;\n })(window.kendo.jQuery);\nvar kendo$1 = kendo;\n\nexport { kendo$1 as default };\n"]}