"use strict";
var util_1 = require('../util/util');
var win = window;
var doc = document;
var VENDOR_PREFIXES = ['', 'webkit', 'Moz', 'MS', 'ms', 'o'];
var TEST_ELEMENT = doc.createElement('div');
var TYPE_FUNCTION = 'function';
var round = Math.round;
var abs = Math.abs;
var now = Date.now;
function setTimeoutContext(fn, timeout, context) {
    return setTimeout(bindFn(fn, context), timeout);
}
function invokeArrayArg(arg, fn, context) {
    if (Array.isArray(arg)) {
        each(arg, context[fn], context);
        return true;
    }
    return false;
}
function each(obj, iterator, context) {
    var i;
    if (!obj) {
        return;
    }
    if (obj.forEach) {
        obj.forEach(iterator, context);
    }
    else if (obj.length !== undefined) {
        i = 0;
        while (i < obj.length) {
            iterator.call(context, obj[i], i, obj);
            i++;
        }
    }
    else {
        for (i in obj) {
            obj.hasOwnProperty(i) && iterator.call(context, obj[i], i, obj);
        }
    }
}
function inherit(child, base, properties) {
    var baseP = base.prototype, childP;
    childP = child.prototype = Object.create(baseP);
    childP.constructor = child;
    childP._super = baseP;
    if (properties) {
        util_1.assign(childP, properties);
    }
}
function bindFn(fn, context) {
    return function boundFn() {
        return fn.apply(context, arguments);
    };
}
function boolOrFn(val, args) {
    if (typeof val == TYPE_FUNCTION) {
        return val.apply(args ? args[0] || undefined : undefined, args);
    }
    return val;
}
function ifUndefined(val1, val2) {
    return (val1 === undefined) ? val2 : val1;
}
function addEventListeners(target, types, handler) {
    each(splitStr(types), function (type) {
        target.addEventListener(type, handler, false);
    });
}
function removeEventListeners(target, types, handler) {
    each(splitStr(types), function (type) {
        target.removeEventListener(type, handler, false);
    });
}
function hasParent(node, parent) {
    while (node) {
        if (node == parent) {
            return true;
        }
        node = node.parentNode;
    }
    return false;
}
function inStr(str, find) {
    return str.indexOf(find) > -1;
}
function splitStr(str) {
    return str.trim().split(/\s+/g);
}
function inArray(src, find, findByKey) {
    if (src.indexOf && !findByKey) {
        return src.indexOf(find);
    }
    else {
        var i = 0;
        while (i < src.length) {
            if ((findByKey && src[i][findByKey] == find) || (!findByKey && src[i] === find)) {
                return i;
            }
            i++;
        }
        return -1;
    }
}
function toArray(obj) {
    return Array.prototype.slice.call(obj, 0);
}
function uniqueArray(src, key, sort) {
    var results = [];
    var values = [];
    var i = 0;
    while (i < src.length) {
        var val = key ? src[i][key] : src[i];
        if (inArray(values, val) < 0) {
            results.push(src[i]);
        }
        values[i] = val;
        i++;
    }
    if (sort) {
        if (!key) {
            results = results.sort();
        }
        else {
            results = results.sort(function sortUniqueArray(a, b) {
                return a[key] > b[key] ? 1 : 0;
            });
        }
    }
    return results;
}
function prefixed(obj, property) {
    var prefix, prop;
    var camelProp = property[0].toUpperCase() + property.slice(1);
    var i = 0;
    while (i < VENDOR_PREFIXES.length) {
        prefix = VENDOR_PREFIXES[i];
        prop = (prefix) ? prefix + camelProp : property;
        if (prop in obj) {
            return prop;
        }
        i++;
    }
    return undefined;
}
var _uniqueId = 1;
function uniqueId() {
    return _uniqueId++;
}
function getWindowForElement(element) {
    var doc = element.ownerDocument || element;
    return (doc.defaultView || doc.parentWindow || window);
}
var MOBILE_REGEX = /mobile|tablet|ip(ad|hone|od)|android/i;
var SUPPORT_TOUCH = ('ontouchstart' in window);
var SUPPORT_POINTER_EVENTS = prefixed(window, 'PointerEvent') !== undefined;
var SUPPORT_ONLY_TOUCH = SUPPORT_TOUCH && MOBILE_REGEX.test(navigator.userAgent);
var INPUT_TYPE_TOUCH = 'touch';
var INPUT_TYPE_PEN = 'pen';
var INPUT_TYPE_MOUSE = 'mouse';
var INPUT_TYPE_KINECT = 'kinect';
var COMPUTE_INTERVAL = 25;
var INPUT_START = 1;
var INPUT_MOVE = 2;
var INPUT_END = 4;
var INPUT_CANCEL = 8;
var DIRECTION_NONE = 1;
exports.DIRECTION_LEFT = 2;
exports.DIRECTION_RIGHT = 4;
var DIRECTION_UP = 8;
var DIRECTION_DOWN = 16;
exports.DIRECTION_HORIZONTAL = exports.DIRECTION_LEFT | exports.DIRECTION_RIGHT;
exports.DIRECTION_VERTICAL = DIRECTION_UP | DIRECTION_DOWN;
var DIRECTION_ALL = exports.DIRECTION_HORIZONTAL | exports.DIRECTION_VERTICAL;
var PROPS_XY = ['x', 'y'];
var PROPS_CLIENT_XY = ['clientX', 'clientY'];
function Input(manager, callback) {
    var self = this;
    this.manager = manager;
    this.callback = callback;
    this.element = manager.element;
    this.target = manager.options.inputTarget;
    this.domHandler = function (ev) {
        if (boolOrFn(manager.options.enable, [manager])) {
            self.handler(ev);
        }
    };
    this.init();
}
Input.prototype = {
    handler: function () { },
    init: function () {
        this.evEl && addEventListeners(this.element, this.evEl, this.domHandler);
        this.evTarget && addEventListeners(this.target, this.evTarget, this.domHandler);
        this.evWin && addEventListeners(getWindowForElement(this.element), this.evWin, this.domHandler);
    },
    destroy: function () {
        this.evEl && removeEventListeners(this.element, this.evEl, this.domHandler);
        this.evTarget && removeEventListeners(this.target, this.evTarget, this.domHandler);
        this.evWin && removeEventListeners(getWindowForElement(this.element), this.evWin, this.domHandler);
    }
};
function createInputInstance(manager) {
    var Type;
    var inputClass = manager.options.inputClass;
    if (inputClass) {
        Type = inputClass;
    }
    else if (SUPPORT_POINTER_EVENTS) {
        Type = PointerEventInput;
    }
    else if (SUPPORT_ONLY_TOUCH) {
        Type = TouchInput;
    }
    else if (!SUPPORT_TOUCH) {
        Type = MouseInput;
    }
    else {
        Type = TouchMouseInput;
    }
    return new (Type)(manager, inputHandler);
}
function inputHandler(manager, eventType, input) {
    var pointersLen = input.pointers.length;
    var changedPointersLen = input.changedPointers.length;
    var isFirst = (eventType & INPUT_START && (pointersLen - changedPointersLen === 0));
    var isFinal = (eventType & (INPUT_END | INPUT_CANCEL) && (pointersLen - changedPointersLen === 0));
    input.isFirst = !!isFirst;
    input.isFinal = !!isFinal;
    if (isFirst) {
        manager.session = {};
    }
    input.eventType = eventType;
    computeInputData(manager, input);
    manager.emit('hammer.input', input);
    manager.recognize(input);
    manager.session.prevInput = input;
}
function computeInputData(manager, input) {
    var session = manager.session;
    var pointers = input.pointers;
    var pointersLength = pointers.length;
    if (!session.firstInput) {
        session.firstInput = simpleCloneInputData(input);
    }
    if (pointersLength > 1 && !session.firstMultiple) {
        session.firstMultiple = simpleCloneInputData(input);
    }
    else if (pointersLength === 1) {
        session.firstMultiple = false;
    }
    var firstInput = session.firstInput;
    var firstMultiple = session.firstMultiple;
    var offsetCenter = firstMultiple ? firstMultiple.center : firstInput.center;
    var center = input.center = getCenter(pointers);
    input.timeStamp = now();
    input.deltaTime = input.timeStamp - firstInput.timeStamp;
    input.angle = getAngle(offsetCenter, center);
    input.distance = getDistance(offsetCenter, center);
    computeDeltaXY(session, input);
    input.offsetDirection = getDirection(input.deltaX, input.deltaY);
    var overallVelocity = getVelocity(input.deltaTime, input.deltaX, input.deltaY);
    input.overallVelocityX = overallVelocity.x;
    input.overallVelocityY = overallVelocity.y;
    input.overallVelocity = (abs(overallVelocity.x) > abs(overallVelocity.y)) ? overallVelocity.x : overallVelocity.y;
    input.scale = firstMultiple ? getScale(firstMultiple.pointers, pointers) : 1;
    input.rotation = firstMultiple ? getRotation(firstMultiple.pointers, pointers) : 0;
    input.maxPointers = !session.prevInput ? input.pointers.length : ((input.pointers.length >
        session.prevInput.maxPointers) ? input.pointers.length : session.prevInput.maxPointers);
    computeIntervalInputData(session, input);
    var target = manager.element;
    if (hasParent(input.srcEvent.target, target)) {
        target = input.srcEvent.target;
    }
    input.target = target;
}
function computeDeltaXY(session, input) {
    var center = input.center;
    var offset = session.offsetDelta || {};
    var prevDelta = session.prevDelta || {};
    var prevInput = session.prevInput || {};
    if (input.eventType === INPUT_START || prevInput.eventType === INPUT_END) {
        prevDelta = session.prevDelta = {
            x: prevInput.deltaX || 0,
            y: prevInput.deltaY || 0
        };
        offset = session.offsetDelta = {
            x: center.x,
            y: center.y
        };
    }
    input.deltaX = prevDelta.x + (center.x - offset.x);
    input.deltaY = prevDelta.y + (center.y - offset.y);
}
function computeIntervalInputData(session, input) {
    var last = session.lastInterval || input, deltaTime = input.timeStamp - last.timeStamp, velocity, velocityX, velocityY, direction;
    if (input.eventType != INPUT_CANCEL && (deltaTime > COMPUTE_INTERVAL || last.velocity === undefined)) {
        var deltaX = input.deltaX - last.deltaX;
        var deltaY = input.deltaY - last.deltaY;
        var v = getVelocity(deltaTime, deltaX, deltaY);
        velocityX = v.x;
        velocityY = v.y;
        velocity = (abs(v.x) > abs(v.y)) ? v.x : v.y;
        direction = getDirection(deltaX, deltaY);
        session.lastInterval = input;
    }
    else {
        velocity = last.velocity;
        velocityX = last.velocityX;
        velocityY = last.velocityY;
        direction = last.direction;
    }
    input.velocity = velocity;
    input.velocityX = velocityX;
    input.velocityY = velocityY;
    input.direction = direction;
}
function simpleCloneInputData(input) {
    var pointers = [];
    var i = 0;
    while (i < input.pointers.length) {
        pointers[i] = {
            clientX: round(input.pointers[i].clientX),
            clientY: round(input.pointers[i].clientY)
        };
        i++;
    }
    return {
        timeStamp: now(),
        pointers: pointers,
        center: getCenter(pointers),
        deltaX: input.deltaX,
        deltaY: input.deltaY
    };
}
function getCenter(pointers) {
    var pointersLength = pointers.length;
    if (pointersLength === 1) {
        return {
            x: round(pointers[0].clientX),
            y: round(pointers[0].clientY)
        };
    }
    var x = 0, y = 0, i = 0;
    while (i < pointersLength) {
        x += pointers[i].clientX;
        y += pointers[i].clientY;
        i++;
    }
    return {
        x: round(x / pointersLength),
        y: round(y / pointersLength)
    };
}
function getVelocity(deltaTime, x, y) {
    return {
        x: x / deltaTime || 0,
        y: y / deltaTime || 0
    };
}
function getDirection(x, y) {
    if (x === y) {
        return DIRECTION_NONE;
    }
    if (abs(x) >= abs(y)) {
        return x < 0 ? exports.DIRECTION_LEFT : exports.DIRECTION_RIGHT;
    }
    return y < 0 ? DIRECTION_UP : DIRECTION_DOWN;
}
function getDistance(p1, p2, props) {
    if (!props) {
        props = PROPS_XY;
    }
    var x = p2[props[0]] - p1[props[0]], y = p2[props[1]] - p1[props[1]];
    return Math.sqrt((x * x) + (y * y));
}
function getAngle(p1, p2, props) {
    if (!props) {
        props = PROPS_XY;
    }
    var x = p2[props[0]] - p1[props[0]], y = p2[props[1]] - p1[props[1]];
    return Math.atan2(y, x) * 180 / Math.PI;
}
function getRotation(start, end) {
    return getAngle(end[1], end[0], PROPS_CLIENT_XY) + getAngle(start[1], start[0], PROPS_CLIENT_XY);
}
function getScale(start, end) {
    return getDistance(end[0], end[1], PROPS_CLIENT_XY) / getDistance(start[0], start[1], PROPS_CLIENT_XY);
}
var MOUSE_INPUT_MAP = {
    mousedown: INPUT_START,
    mousemove: INPUT_MOVE,
    mouseup: INPUT_END
};
var MOUSE_ELEMENT_EVENTS = 'mousedown';
var MOUSE_WINDOW_EVENTS = 'mousemove mouseup';
function MouseInput(manager, handler) {
    this.evEl = MOUSE_ELEMENT_EVENTS;
    this.evWin = MOUSE_WINDOW_EVENTS;
    this.allow = true;
    this.pressed = false;
    Input.apply(this, arguments);
}
inherit(MouseInput, Input, {
    handler: function MEhandler(ev) {
        var eventType = MOUSE_INPUT_MAP[ev.type];
        if (eventType & INPUT_START && ev.button === 0) {
            this.pressed = true;
        }
        if (eventType & INPUT_MOVE && ev.which !== 1) {
            eventType = INPUT_END;
        }
        if (!this.pressed || !this.allow) {
            return;
        }
        if (eventType & INPUT_END) {
            this.pressed = false;
        }
        this.callback(this.manager, eventType, {
            pointers: [ev],
            changedPointers: [ev],
            pointerType: INPUT_TYPE_MOUSE,
            srcEvent: ev
        });
    }
});
var POINTER_INPUT_MAP = {
    pointerdown: INPUT_START,
    pointermove: INPUT_MOVE,
    pointerup: INPUT_END,
    pointercancel: INPUT_CANCEL,
    pointerout: INPUT_CANCEL
};
var IE10_POINTER_TYPE_ENUM = {
    2: INPUT_TYPE_TOUCH,
    3: INPUT_TYPE_PEN,
    4: INPUT_TYPE_MOUSE,
    5: INPUT_TYPE_KINECT
};
var POINTER_ELEMENT_EVENTS = 'pointerdown';
var POINTER_WINDOW_EVENTS = 'pointermove pointerup pointercancel';
if (win.MSPointerEvent && !win.PointerEvent) {
    POINTER_ELEMENT_EVENTS = 'MSPointerDown';
    POINTER_WINDOW_EVENTS = 'MSPointerMove MSPointerUp MSPointerCancel';
}
function PointerEventInput() {
    this.evEl = POINTER_ELEMENT_EVENTS;
    this.evWin = POINTER_WINDOW_EVENTS;
    Input.apply(this, arguments);
    this.store = (this.manager.session.pointerEvents = []);
}
inherit(PointerEventInput, Input, {
    handler: function PEhandler(ev) {
        var store = this.store;
        var removePointer = false;
        var eventTypeNormalized = ev.type.toLowerCase().replace('ms', '');
        var eventType = POINTER_INPUT_MAP[eventTypeNormalized];
        var pointerType = IE10_POINTER_TYPE_ENUM[ev.pointerType] || ev.pointerType;
        var isTouch = (pointerType == INPUT_TYPE_TOUCH);
        var storeIndex = inArray(store, ev.pointerId, 'pointerId');
        if (eventType & INPUT_START && (ev.button === 0 || isTouch)) {
            if (storeIndex < 0) {
                store.push(ev);
                storeIndex = store.length - 1;
            }
        }
        else if (eventType & (INPUT_END | INPUT_CANCEL)) {
            removePointer = true;
        }
        if (storeIndex < 0) {
            return;
        }
        store[storeIndex] = ev;
        this.callback(this.manager, eventType, {
            pointers: store,
            changedPointers: [ev],
            pointerType: pointerType,
            srcEvent: ev
        });
        if (removePointer) {
            store.splice(storeIndex, 1);
        }
    }
});
var SINGLE_TOUCH_INPUT_MAP = {
    touchstart: INPUT_START,
    touchmove: INPUT_MOVE,
    touchend: INPUT_END,
    touchcancel: INPUT_CANCEL
};
var SINGLE_TOUCH_TARGET_EVENTS = 'touchstart';
var SINGLE_TOUCH_WINDOW_EVENTS = 'touchstart touchmove touchend touchcancel';
function SingleTouchInput() {
    this.evTarget = SINGLE_TOUCH_TARGET_EVENTS;
    this.evWin = SINGLE_TOUCH_WINDOW_EVENTS;
    this.started = false;
    Input.apply(this, arguments);
}
inherit(SingleTouchInput, Input, {
    handler: function TEhandler(ev) {
        var type = SINGLE_TOUCH_INPUT_MAP[ev.type];
        if (type === INPUT_START) {
            this.started = true;
        }
        if (!this.started) {
            return;
        }
        var touches = normalizeSingleTouches.call(this, ev, type);
        if (type & (INPUT_END | INPUT_CANCEL) && touches[0].length - touches[1].length === 0) {
            this.started = false;
        }
        this.callback(this.manager, type, {
            pointers: touches[0],
            changedPointers: touches[1],
            pointerType: INPUT_TYPE_TOUCH,
            srcEvent: ev
        });
    }
});
function normalizeSingleTouches(ev, type) {
    var all = toArray(ev.touches);
    var changed = toArray(ev.changedTouches);
    if (type & (INPUT_END | INPUT_CANCEL)) {
        all = uniqueArray(all.concat(changed), 'identifier', true);
    }
    return [all, changed];
}
var TOUCH_INPUT_MAP = {
    touchstart: INPUT_START,
    touchmove: INPUT_MOVE,
    touchend: INPUT_END,
    touchcancel: INPUT_CANCEL
};
var TOUCH_TARGET_EVENTS = 'touchstart touchmove touchend touchcancel';
function TouchInput(manager, handler) {
    this.evTarget = TOUCH_TARGET_EVENTS;
    this.targetIds = {};
    Input.apply(this, arguments);
}
inherit(TouchInput, Input, {
    handler: function MTEhandler(ev) {
        var type = TOUCH_INPUT_MAP[ev.type];
        var touches = getTouches.call(this, ev, type);
        if (!touches) {
            return;
        }
        this.callback(this.manager, type, {
            pointers: touches[0],
            changedPointers: touches[1],
            pointerType: INPUT_TYPE_TOUCH,
            srcEvent: ev
        });
    }
});
function getTouches(ev, type) {
    var allTouches = toArray(ev.touches);
    var targetIds = this.targetIds;
    if (type & (INPUT_START | INPUT_MOVE) && allTouches.length === 1) {
        targetIds[allTouches[0].identifier] = true;
        return [allTouches, allTouches];
    }
    var i, targetTouches, changedTouches = toArray(ev.changedTouches), changedTargetTouches = [], target = this.target;
    targetTouches = allTouches.filter(function (touch) {
        return hasParent(touch.target, target);
    });
    if (type === INPUT_START) {
        i = 0;
        while (i < targetTouches.length) {
            targetIds[targetTouches[i].identifier] = true;
            i++;
        }
    }
    i = 0;
    while (i < changedTouches.length) {
        if (targetIds[changedTouches[i].identifier]) {
            changedTargetTouches.push(changedTouches[i]);
        }
        if (type & (INPUT_END | INPUT_CANCEL)) {
            delete targetIds[changedTouches[i].identifier];
        }
        i++;
    }
    if (!changedTargetTouches.length) {
        return;
    }
    return [
        uniqueArray(targetTouches.concat(changedTargetTouches), 'identifier', true),
        changedTargetTouches
    ];
}
function TouchMouseInput() {
    Input.apply(this, arguments);
    var handler = bindFn(this.handler, this);
    this.touch = new TouchInput(this.manager, handler);
    this.mouse = new MouseInput(this.manager, handler);
}
inherit(TouchMouseInput, Input, {
    handler: function TMEhandler(manager, inputEvent, inputData) {
        var isTouch = (inputData.pointerType == INPUT_TYPE_TOUCH), isMouse = (inputData.pointerType == INPUT_TYPE_MOUSE);
        if (isTouch) {
            this.mouse.allow = false;
        }
        else if (isMouse && !this.mouse.allow) {
            return;
        }
        if (inputEvent & (INPUT_END | INPUT_CANCEL)) {
            this.mouse.allow = true;
        }
        this.callback(manager, inputEvent, inputData);
    },
    destroy: function destroy() {
        this.touch.destroy();
        this.mouse.destroy();
    }
});
var PREFIXED_TOUCH_ACTION = prefixed(TEST_ELEMENT.style, 'touchAction');
var NATIVE_TOUCH_ACTION = PREFIXED_TOUCH_ACTION !== undefined;
var TOUCH_ACTION_COMPUTE = 'compute';
var TOUCH_ACTION_AUTO = 'auto';
var TOUCH_ACTION_MANIPULATION = 'manipulation';
var TOUCH_ACTION_NONE = 'none';
var TOUCH_ACTION_PAN_X = 'pan-x';
var TOUCH_ACTION_PAN_Y = 'pan-y';
function TouchAction(manager, value) {
    this.manager = manager;
    this.set(value);
}
TouchAction.prototype = {
    set: function (value) {
        if (value == TOUCH_ACTION_COMPUTE) {
            value = this.compute();
        }
        if (NATIVE_TOUCH_ACTION && this.manager.element.style) {
            this.manager.element.style[PREFIXED_TOUCH_ACTION] = value;
        }
        this.actions = value.toLowerCase().trim();
    },
    update: function () {
        this.set(this.manager.options.touchAction);
    },
    compute: function () {
        var actions = [];
        each(this.manager.recognizers, function (recognizer) {
            if (boolOrFn(recognizer.options.enable, [recognizer])) {
                actions = actions.concat(recognizer.getTouchAction());
            }
        });
        return cleanTouchActions(actions.join(' '));
    },
    preventDefaults: function (input) {
        if (NATIVE_TOUCH_ACTION) {
            return;
        }
        var srcEvent = input.srcEvent;
        var direction = input.offsetDirection;
        if (this.manager.session.prevented) {
            srcEvent.preventDefault();
            return;
        }
        var actions = this.actions;
        var hasNone = inStr(actions, TOUCH_ACTION_NONE);
        var hasPanY = inStr(actions, TOUCH_ACTION_PAN_Y);
        var hasPanX = inStr(actions, TOUCH_ACTION_PAN_X);
        if (hasNone) {
            var isTapPointer = input.pointers.length === 1;
            var isTapMovement = input.distance < 2;
            var isTapTouchTime = input.deltaTime < 250;
            if (isTapPointer && isTapMovement && isTapTouchTime) {
                return;
            }
        }
        if (hasPanX && hasPanY) {
            return;
        }
        if (hasNone ||
            (hasPanY && direction & exports.DIRECTION_HORIZONTAL) ||
            (hasPanX && direction & exports.DIRECTION_VERTICAL)) {
            return this.preventSrc(srcEvent);
        }
    },
    preventSrc: function (srcEvent) {
        this.manager.session.prevented = true;
        srcEvent.preventDefault();
    }
};
function cleanTouchActions(actions) {
    if (inStr(actions, TOUCH_ACTION_NONE)) {
        return TOUCH_ACTION_NONE;
    }
    var hasPanX = inStr(actions, TOUCH_ACTION_PAN_X);
    var hasPanY = inStr(actions, TOUCH_ACTION_PAN_Y);
    if (hasPanX && hasPanY) {
        return TOUCH_ACTION_NONE;
    }
    if (hasPanX || hasPanY) {
        return hasPanX ? TOUCH_ACTION_PAN_X : TOUCH_ACTION_PAN_Y;
    }
    if (inStr(actions, TOUCH_ACTION_MANIPULATION)) {
        return TOUCH_ACTION_MANIPULATION;
    }
    return TOUCH_ACTION_AUTO;
}
var STATE_POSSIBLE = 1;
var STATE_BEGAN = 2;
var STATE_CHANGED = 4;
var STATE_ENDED = 8;
var STATE_RECOGNIZED = STATE_ENDED;
var STATE_CANCELLED = 16;
var STATE_FAILED = 32;
function Recognizer(options) {
    this.options = util_1.assign({}, this.defaults, options || {});
    this.id = uniqueId();
    this.manager = null;
    this.options.enable = ifUndefined(this.options.enable, true);
    this.state = STATE_POSSIBLE;
    this.simultaneous = {};
    this.requireFail = [];
}
Recognizer.prototype = {
    defaults: {},
    set: function (options) {
        util_1.assign(this.options, options);
        this.manager && this.manager.touchAction.update();
        return this;
    },
    recognizeWith: function (otherRecognizer) {
        if (invokeArrayArg(otherRecognizer, 'recognizeWith', this)) {
            return this;
        }
        var simultaneous = this.simultaneous;
        otherRecognizer = getRecognizerByNameIfManager(otherRecognizer, this);
        if (!simultaneous[otherRecognizer.id]) {
            simultaneous[otherRecognizer.id] = otherRecognizer;
            otherRecognizer.recognizeWith(this);
        }
        return this;
    },
    dropRecognizeWith: function (otherRecognizer) {
        if (invokeArrayArg(otherRecognizer, 'dropRecognizeWith', this)) {
            return this;
        }
        otherRecognizer = getRecognizerByNameIfManager(otherRecognizer, this);
        delete this.simultaneous[otherRecognizer.id];
        return this;
    },
    requireFailure: function (otherRecognizer) {
        if (invokeArrayArg(otherRecognizer, 'requireFailure', this)) {
            return this;
        }
        var requireFail = this.requireFail;
        otherRecognizer = getRecognizerByNameIfManager(otherRecognizer, this);
        if (inArray(requireFail, otherRecognizer) === -1) {
            requireFail.push(otherRecognizer);
            otherRecognizer.requireFailure(this);
        }
        return this;
    },
    dropRequireFailure: function (otherRecognizer) {
        if (invokeArrayArg(otherRecognizer, 'dropRequireFailure', this)) {
            return this;
        }
        otherRecognizer = getRecognizerByNameIfManager(otherRecognizer, this);
        var index = inArray(this.requireFail, otherRecognizer);
        if (index > -1) {
            this.requireFail.splice(index, 1);
        }
        return this;
    },
    hasRequireFailures: function () {
        return this.requireFail.length > 0;
    },
    canRecognizeWith: function (otherRecognizer) {
        return !!this.simultaneous[otherRecognizer.id];
    },
    emit: function (input) {
        var self = this;
        var state = this.state;
        function emit(event) {
            self.manager.emit(event, input);
        }
        if (state < STATE_ENDED) {
            emit(self.options.event + stateStr(state));
        }
        emit(self.options.event);
        if (input.additionalEvent) {
            emit(input.additionalEvent);
        }
        if (state >= STATE_ENDED) {
            emit(self.options.event + stateStr(state));
        }
    },
    tryEmit: function (input) {
        if (this.canEmit()) {
            return this.emit(input);
        }
        this.state = STATE_FAILED;
    },
    canEmit: function () {
        var i = 0;
        while (i < this.requireFail.length) {
            if (!(this.requireFail[i].state & (STATE_FAILED | STATE_POSSIBLE))) {
                return false;
            }
            i++;
        }
        return true;
    },
    recognize: function (inputData) {
        var inputDataClone = util_1.assign({}, inputData);
        if (!boolOrFn(this.options.enable, [this, inputDataClone])) {
            this.reset();
            this.state = STATE_FAILED;
            return;
        }
        if (this.state & (STATE_RECOGNIZED | STATE_CANCELLED | STATE_FAILED)) {
            this.state = STATE_POSSIBLE;
        }
        this.state = this.process(inputDataClone);
        if (this.state & (STATE_BEGAN | STATE_CHANGED | STATE_ENDED | STATE_CANCELLED)) {
            this.tryEmit(inputDataClone);
        }
    },
    process: function (inputData) { },
    getTouchAction: function () { },
    reset: function () { }
};
function stateStr(state) {
    if (state & STATE_CANCELLED) {
        return 'cancel';
    }
    else if (state & STATE_ENDED) {
        return 'end';
    }
    else if (state & STATE_CHANGED) {
        return 'move';
    }
    else if (state & STATE_BEGAN) {
        return 'start';
    }
    return '';
}
function directionStr(direction) {
    if (direction == DIRECTION_DOWN) {
        return 'down';
    }
    else if (direction == DIRECTION_UP) {
        return 'up';
    }
    else if (direction == exports.DIRECTION_LEFT) {
        return 'left';
    }
    else if (direction == exports.DIRECTION_RIGHT) {
        return 'right';
    }
    return '';
}
function getRecognizerByNameIfManager(otherRecognizer, recognizer) {
    var manager = recognizer.manager;
    if (manager) {
        return manager.get(otherRecognizer);
    }
    return otherRecognizer;
}
function AttrRecognizer() {
    Recognizer.apply(this, arguments);
}
inherit(AttrRecognizer, Recognizer, {
    defaults: {
        pointers: 1
    },
    attrTest: function (input) {
        var optionPointers = this.options.pointers;
        return optionPointers === 0 || input.pointers.length === optionPointers;
    },
    process: function (input) {
        var state = this.state;
        var eventType = input.eventType;
        var isRecognized = state & (STATE_BEGAN | STATE_CHANGED);
        var isValid = this.attrTest(input);
        if (isRecognized && (eventType & INPUT_CANCEL || !isValid)) {
            return state | STATE_CANCELLED;
        }
        else if (isRecognized || isValid) {
            if (eventType & INPUT_END) {
                return state | STATE_ENDED;
            }
            else if (!(state & STATE_BEGAN)) {
                return STATE_BEGAN;
            }
            return state | STATE_CHANGED;
        }
        return STATE_FAILED;
    }
});
function PanRecognizer() {
    AttrRecognizer.apply(this, arguments);
    this.pX = null;
    this.pY = null;
}
inherit(PanRecognizer, AttrRecognizer, {
    defaults: {
        event: 'pan',
        threshold: 10,
        pointers: 1,
        direction: DIRECTION_ALL
    },
    getTouchAction: function () {
        var direction = this.options.direction;
        var actions = [];
        if (direction & exports.DIRECTION_HORIZONTAL) {
            actions.push(TOUCH_ACTION_PAN_Y);
        }
        if (direction & exports.DIRECTION_VERTICAL) {
            actions.push(TOUCH_ACTION_PAN_X);
        }
        return actions;
    },
    directionTest: function (input) {
        var options = this.options;
        var hasMoved = true;
        var distance = input.distance;
        var direction = input.direction;
        var x = input.deltaX;
        var y = input.deltaY;
        if (!(direction & options.direction)) {
            if (options.direction & exports.DIRECTION_HORIZONTAL) {
                direction = (x === 0) ? DIRECTION_NONE : (x < 0) ? exports.DIRECTION_LEFT : exports.DIRECTION_RIGHT;
                hasMoved = x != this.pX;
                distance = Math.abs(input.deltaX);
            }
            else {
                direction = (y === 0) ? DIRECTION_NONE : (y < 0) ? DIRECTION_UP : DIRECTION_DOWN;
                hasMoved = y != this.pY;
                distance = Math.abs(input.deltaY);
            }
        }
        input.direction = direction;
        return hasMoved && distance > options.threshold && direction & options.direction;
    },
    attrTest: function (input) {
        return AttrRecognizer.prototype.attrTest.call(this, input) &&
            (this.state & STATE_BEGAN || (!(this.state & STATE_BEGAN) && this.directionTest(input)));
    },
    emit: function (input) {
        this.pX = input.deltaX;
        this.pY = input.deltaY;
        var direction = directionStr(input.direction);
        if (direction) {
            input.additionalEvent = this.options.event + direction;
        }
        this._super.emit.call(this, input);
    }
});
function PinchRecognizer() {
    AttrRecognizer.apply(this, arguments);
}
inherit(PinchRecognizer, AttrRecognizer, {
    defaults: {
        event: 'pinch',
        threshold: 0,
        pointers: 2
    },
    getTouchAction: function () {
        return [TOUCH_ACTION_NONE];
    },
    attrTest: function (input) {
        return this._super.attrTest.call(this, input) &&
            (Math.abs(input.scale - 1) > this.options.threshold || this.state & STATE_BEGAN);
    },
    emit: function (input) {
        if (input.scale !== 1) {
            var inOut = input.scale < 1 ? 'in' : 'out';
            input.additionalEvent = this.options.event + inOut;
        }
        this._super.emit.call(this, input);
    }
});
function PressRecognizer() {
    Recognizer.apply(this, arguments);
    this._timer = null;
    this._input = null;
}
inherit(PressRecognizer, Recognizer, {
    defaults: {
        event: 'press',
        pointers: 1,
        time: 251,
        threshold: 9
    },
    getTouchAction: function () {
        return [TOUCH_ACTION_AUTO];
    },
    process: function (input) {
        var options = this.options;
        var validPointers = input.pointers.length === options.pointers;
        var validMovement = input.distance < options.threshold;
        var validTime = input.deltaTime > options.time;
        this._input = input;
        if (!validMovement || !validPointers || (input.eventType & (INPUT_END | INPUT_CANCEL) && !validTime)) {
            this.reset();
        }
        else if (input.eventType & INPUT_START) {
            this.reset();
            this._timer = setTimeoutContext(function () {
                this.state = STATE_RECOGNIZED;
                this.tryEmit();
            }, options.time, this);
        }
        else if (input.eventType & INPUT_END) {
            return STATE_RECOGNIZED;
        }
        return STATE_FAILED;
    },
    reset: function () {
        clearTimeout(this._timer);
    },
    emit: function (input) {
        if (this.state !== STATE_RECOGNIZED) {
            return;
        }
        if (input && (input.eventType & INPUT_END)) {
            this.manager.emit(this.options.event + 'up', input);
        }
        else {
            this._input.timeStamp = now();
            this.manager.emit(this.options.event, this._input);
        }
    }
});
function RotateRecognizer() {
    AttrRecognizer.apply(this, arguments);
}
inherit(RotateRecognizer, AttrRecognizer, {
    defaults: {
        event: 'rotate',
        threshold: 0,
        pointers: 2
    },
    getTouchAction: function () {
        return [TOUCH_ACTION_NONE];
    },
    attrTest: function (input) {
        return this._super.attrTest.call(this, input) &&
            (Math.abs(input.rotation) > this.options.threshold || this.state & STATE_BEGAN);
    }
});
function SwipeRecognizer() {
    AttrRecognizer.apply(this, arguments);
}
inherit(SwipeRecognizer, AttrRecognizer, {
    defaults: {
        event: 'swipe',
        threshold: 10,
        velocity: 0.3,
        direction: exports.DIRECTION_HORIZONTAL | exports.DIRECTION_VERTICAL,
        pointers: 1
    },
    getTouchAction: function () {
        return PanRecognizer.prototype.getTouchAction.call(this);
    },
    attrTest: function (input) {
        var direction = this.options.direction;
        var velocity;
        if (direction & (exports.DIRECTION_HORIZONTAL | exports.DIRECTION_VERTICAL)) {
            velocity = input.overallVelocity;
        }
        else if (direction & exports.DIRECTION_HORIZONTAL) {
            velocity = input.overallVelocityX;
        }
        else if (direction & exports.DIRECTION_VERTICAL) {
            velocity = input.overallVelocityY;
        }
        return this._super.attrTest.call(this, input) &&
            direction & input.offsetDirection &&
            input.distance > this.options.threshold &&
            input.maxPointers == this.options.pointers &&
            abs(velocity) > this.options.velocity && input.eventType & INPUT_END;
    },
    emit: function (input) {
        var direction = directionStr(input.offsetDirection);
        if (direction) {
            this.manager.emit(this.options.event + direction, input);
        }
        this.manager.emit(this.options.event, input);
    }
});
function TapRecognizer() {
    Recognizer.apply(this, arguments);
    this.pTime = false;
    this.pCenter = false;
    this._timer = null;
    this._input = null;
    this.count = 0;
}
inherit(TapRecognizer, Recognizer, {
    defaults: {
        event: 'tap',
        pointers: 1,
        taps: 1,
        interval: 300,
        time: 250,
        threshold: 9,
        posThreshold: 10
    },
    getTouchAction: function () {
        return [TOUCH_ACTION_MANIPULATION];
    },
    process: function (input) {
        var options = this.options;
        var validPointers = input.pointers.length === options.pointers;
        var validMovement = input.distance < options.threshold;
        var validTouchTime = input.deltaTime < options.time;
        this.reset();
        if ((input.eventType & INPUT_START) && (this.count === 0)) {
            return this.failTimeout();
        }
        if (validMovement && validTouchTime && validPointers) {
            if (input.eventType != INPUT_END) {
                return this.failTimeout();
            }
            var validInterval = this.pTime ? (input.timeStamp - this.pTime < options.interval) : true;
            var validMultiTap = !this.pCenter || getDistance(this.pCenter, input.center) < options.posThreshold;
            this.pTime = input.timeStamp;
            this.pCenter = input.center;
            if (!validMultiTap || !validInterval) {
                this.count = 1;
            }
            else {
                this.count += 1;
            }
            this._input = input;
            var tapCount = this.count % options.taps;
            if (tapCount === 0) {
                if (!this.hasRequireFailures()) {
                    return STATE_RECOGNIZED;
                }
                else {
                    this._timer = setTimeoutContext(function () {
                        this.state = STATE_RECOGNIZED;
                        this.tryEmit();
                    }, options.interval, this);
                    return STATE_BEGAN;
                }
            }
        }
        return STATE_FAILED;
    },
    failTimeout: function () {
        this._timer = setTimeoutContext(function () {
            this.state = STATE_FAILED;
        }, this.options.interval, this);
        return STATE_FAILED;
    },
    reset: function () {
        clearTimeout(this._timer);
    },
    emit: function () {
        if (this.state == STATE_RECOGNIZED) {
            this._input.tapCount = this.count;
            this.manager.emit(this.options.event, this._input);
        }
    }
});
function Hammer(element, options) {
    options = options || {};
    options.recognizers = ifUndefined(options.recognizers, _defaults.preset);
    return new Manager(element, options);
}
exports.Hammer = Hammer;
var VERSION = '2.0.6';
var _defaults = {
    domEvents: false,
    touchAction: TOUCH_ACTION_COMPUTE,
    enable: true,
    inputTarget: null,
    inputClass: null,
    preset: [
        [RotateRecognizer, { enable: false }],
        [PinchRecognizer, { enable: false }, ['rotate']],
        [SwipeRecognizer, { direction: exports.DIRECTION_HORIZONTAL }],
        [PanRecognizer, { direction: exports.DIRECTION_HORIZONTAL }, ['swipe']],
        [TapRecognizer],
        [TapRecognizer, { event: 'doubletap', taps: 2 }, ['tap']],
        [PressRecognizer]
    ],
    cssProps: {
        userSelect: 'none',
        touchSelect: 'none',
        touchCallout: 'none',
        contentZooming: 'none',
        userDrag: 'none',
        tapHighlightColor: 'rgba(0,0,0,0)'
    }
};
var STOP = 1;
var FORCED_STOP = 2;
function Manager(element, options) {
    this.options = util_1.assign({}, _defaults, options || {});
    this.options.inputTarget = this.options.inputTarget || element;
    this.handlers = {};
    this.session = {};
    this.recognizers = [];
    this.element = element;
    this.input = createInputInstance(this);
    this.touchAction = new TouchAction(this, this.options.touchAction);
    toggleCssProps(this, true);
    each(this.options.recognizers, function (item) {
        var recognizer = this.add(new (item[0])(item[1]));
        item[2] && recognizer.recognizeWith(item[2]);
        item[3] && recognizer.requireFailure(item[3]);
    }, this);
}
Manager.prototype = {
    set: function (options) {
        util_1.assign(this.options, options);
        if (options.touchAction) {
            this.touchAction.update();
        }
        if (options.inputTarget) {
            this.input.destroy();
            this.input.target = options.inputTarget;
            this.input.init();
        }
        return this;
    },
    stop: function (force) {
        this.session.stopped = force ? FORCED_STOP : STOP;
    },
    recognize: function (inputData) {
        var session = this.session;
        if (session.stopped) {
            return;
        }
        this.touchAction.preventDefaults(inputData);
        var recognizer;
        var recognizers = this.recognizers;
        var curRecognizer = session.curRecognizer;
        if (!curRecognizer || (curRecognizer && curRecognizer.state & STATE_RECOGNIZED)) {
            curRecognizer = session.curRecognizer = null;
        }
        var i = 0;
        while (i < recognizers.length) {
            recognizer = recognizers[i];
            if (session.stopped !== FORCED_STOP && (!curRecognizer || recognizer == curRecognizer ||
                recognizer.canRecognizeWith(curRecognizer))) {
                recognizer.recognize(inputData);
            }
            else {
                recognizer.reset();
            }
            if (!curRecognizer && recognizer.state & (STATE_BEGAN | STATE_CHANGED | STATE_ENDED)) {
                curRecognizer = session.curRecognizer = recognizer;
            }
            i++;
        }
    },
    get: function (recognizer) {
        if (recognizer instanceof Recognizer) {
            return recognizer;
        }
        var recognizers = this.recognizers;
        for (var i = 0; i < recognizers.length; i++) {
            if (recognizers[i].options.event == recognizer) {
                return recognizers[i];
            }
        }
        return null;
    },
    add: function (recognizer) {
        if (invokeArrayArg(recognizer, 'add', this)) {
            return this;
        }
        var existing = this.get(recognizer.options.event);
        if (existing) {
            this.remove(existing);
        }
        this.recognizers.push(recognizer);
        recognizer.manager = this;
        this.touchAction.update();
        return recognizer;
    },
    remove: function (recognizer) {
        if (invokeArrayArg(recognizer, 'remove', this)) {
            return this;
        }
        recognizer = this.get(recognizer);
        if (recognizer) {
            var recognizers = this.recognizers;
            var index = inArray(recognizers, recognizer);
            if (index !== -1) {
                recognizers.splice(index, 1);
                this.touchAction.update();
            }
        }
        return this;
    },
    on: function (events, handler) {
        var handlers = this.handlers;
        each(splitStr(events), function (event) {
            handlers[event] = handlers[event] || [];
            handlers[event].push(handler);
        });
        return this;
    },
    off: function (events, handler) {
        var handlers = this.handlers;
        each(splitStr(events), function (event) {
            if (!handler) {
                delete handlers[event];
            }
            else {
                handlers[event] && handlers[event].splice(inArray(handlers[event], handler), 1);
            }
        });
        return this;
    },
    emit: function (event, data) {
        if (this.options.domEvents) {
            triggerDomEvent(event, data);
        }
        var handlers = this.handlers[event] && this.handlers[event].slice();
        if (!handlers || !handlers.length) {
            return;
        }
        data.type = event;
        data.preventDefault = function () {
            data.srcEvent.preventDefault();
        };
        var i = 0;
        while (i < handlers.length) {
            handlers[i](data);
            i++;
        }
    },
    destroy: function () {
        this.element && toggleCssProps(this, false);
        this.handlers = {};
        this.session = {};
        this.input.destroy();
        this.element = null;
    }
};
function toggleCssProps(manager, add) {
    var element = manager.element;
    if (!element.style) {
        return;
    }
    each(manager.options.cssProps, function (value, name) {
        element.style[prefixed(element.style, name)] = add ? value : '';
    });
}
function triggerDomEvent(event, data) {
    var gestureEvent = doc.createEvent('Event');
    gestureEvent.initEvent(event, true, true);
    gestureEvent.gesture = data;
    data.target.dispatchEvent(gestureEvent);
}
util_1.assign(Hammer, {
    INPUT_START: INPUT_START,
    INPUT_MOVE: INPUT_MOVE,
    INPUT_END: INPUT_END,
    INPUT_CANCEL: INPUT_CANCEL,
    STATE_POSSIBLE: STATE_POSSIBLE,
    STATE_BEGAN: STATE_BEGAN,
    STATE_CHANGED: STATE_CHANGED,
    STATE_ENDED: STATE_ENDED,
    STATE_RECOGNIZED: STATE_RECOGNIZED,
    STATE_CANCELLED: STATE_CANCELLED,
    STATE_FAILED: STATE_FAILED,
    DIRECTION_NONE: DIRECTION_NONE,
    DIRECTION_LEFT: exports.DIRECTION_LEFT,
    DIRECTION_RIGHT: exports.DIRECTION_RIGHT,
    DIRECTION_UP: DIRECTION_UP,
    DIRECTION_DOWN: DIRECTION_DOWN,
    DIRECTION_HORIZONTAL: exports.DIRECTION_HORIZONTAL,
    DIRECTION_VERTICAL: exports.DIRECTION_VERTICAL,
    DIRECTION_ALL: DIRECTION_ALL,
    Manager: Manager,
    Input: Input,
    TouchAction: TouchAction,
    TouchInput: TouchInput,
    MouseInput: MouseInput,
    PointerEventInput: PointerEventInput,
    TouchMouseInput: TouchMouseInput,
    SingleTouchInput: SingleTouchInput,
    Recognizer: Recognizer,
    AttrRecognizer: AttrRecognizer,
    Tap: TapRecognizer,
    Pan: PanRecognizer,
    Swipe: SwipeRecognizer,
    Pinch: PinchRecognizer,
    Rotate: RotateRecognizer,
    Press: PressRecognizer,
    on: addEventListeners,
    off: removeEventListeners,
    each: each,
    inherit: inherit,
    bindFn: bindFn,
    prefixed: prefixed
});
win.Hammer = Hammer;
