From b79d6cc8ea0ed4ad349d3c78124f31c2af5b0d09 Mon Sep 17 00:00:00 2001 From: Adam Bradley Date: Mon, 11 Jan 2016 11:17:55 -0600 Subject: [PATCH] refactor(util): use Object.assign polyfill --- ionic/animations/animation.ts | 6 +- ionic/components/menu/menu-gestures.ts | 4 +- ionic/config/config.ts | 2 +- ionic/gestures/drag-gesture.ts | 2 +- ionic/gestures/gesture.ts | 4 +- ionic/gestures/hammer.ts | 5021 ++++++++++++------------ ionic/platform/platform.ts | 54 +- ionic/platform/storage/sql.ts | 4 +- ionic/util/test/util.spec.ts | 17 +- ionic/util/util.ts | 25 +- 10 files changed, 2520 insertions(+), 2619 deletions(-) diff --git a/ionic/animations/animation.ts b/ionic/animations/animation.ts index 592edb1272..8f622baf8d 100644 --- a/ionic/animations/animation.ts +++ b/ionic/animations/animation.ts @@ -1,5 +1,5 @@ import {CSS, rafFrames} from '../util/dom'; -import {extend} from '../util/util'; +import {assign} from '../util/util'; const doc: any = document; @@ -53,7 +53,7 @@ export class Animation { constructor(ele, opts={}) { this.reset(); - this._opts = extend({ + this._opts = assign({ renderDelay: 16 }, opts); @@ -516,7 +516,7 @@ export class Animation { function copy(dest, src) { // undo what stage() may have already done - extend(dest, src); + assign(dest, src); dest._isFinished = dest._isStaged = dest.isProgress = false; dest._chld = []; diff --git a/ionic/components/menu/menu-gestures.ts b/ionic/components/menu/menu-gestures.ts index ad20f3811e..e160b2f522 100644 --- a/ionic/components/menu/menu-gestures.ts +++ b/ionic/components/menu/menu-gestures.ts @@ -1,12 +1,12 @@ import {Menu} from './menu'; import {SlideEdgeGesture} from '../../gestures/slide-edge-gesture'; -import * as util from '../../util'; +import {assign} from '../../util/util'; export class MenuContentGesture extends SlideEdgeGesture { constructor(menu: Menu, targetEl: Element, options = {}) { - super(targetEl, util.extend({ + super(targetEl, assign({ direction: (menu.side === 'left' || menu.side === 'right') ? 'x' : 'y', edge: menu.side, threshold: 0, diff --git a/ionic/config/config.ts b/ionic/config/config.ts index a9c8693265..f030857cab 100644 --- a/ionic/config/config.ts +++ b/ionic/config/config.ts @@ -7,7 +7,7 @@ */ import {Platform} from '../platform/platform'; -import {isObject, isDefined, isFunction, isArray, extend} from '../util/util'; +import {isObject, isDefined, isFunction, isArray} from '../util/util'; /** * @name Config diff --git a/ionic/gestures/drag-gesture.ts b/ionic/gestures/drag-gesture.ts index 3051cb2b67..826ec81886 100644 --- a/ionic/gestures/drag-gesture.ts +++ b/ionic/gestures/drag-gesture.ts @@ -30,7 +30,7 @@ export class DragGesture extends Gesture { this.dragging = false; }); - this.hammertime.get('pan').set(this._options); + //this.hammertime.get('pan').set(this._options); } onDrag() {} diff --git a/ionic/gestures/gesture.ts b/ionic/gestures/gesture.ts index 208b4c274f..989fc3900e 100644 --- a/ionic/gestures/gesture.ts +++ b/ionic/gestures/gesture.ts @@ -1,4 +1,4 @@ -import {defaults, extend} from '../util'; +import {defaults, assign} from '../util'; import {Hammer} from './hammer'; /** @@ -28,7 +28,7 @@ export class Gesture { } options(opts = {}) { - extend(this._options, opts); + assign(this._options, opts); } on(type, cb) { diff --git a/ionic/gestures/hammer.ts b/ionic/gestures/hammer.ts index 1ace7a3fba..bf117b15d3 100644 --- a/ionic/gestures/hammer.ts +++ b/ionic/gestures/hammer.ts @@ -1,2553 +1,2468 @@ -/*! Hammer.JS - v2.0.6 - 2015-12-23 - * http://hammerjs.github.io/ - * - * Copyright (c) 2015 Jorik Tangelder; - * Licensed under the license */ - -var VENDOR_PREFIXES = ['', 'webkit', 'Moz', 'MS', 'ms', 'o']; -var TEST_ELEMENT = document.createElement('div'); - -var TYPE_FUNCTION = 'function'; - -var round = Math.round; -var abs = Math.abs; -var now = Date.now; - -/** - * set a timeout with a given scope - * @param {Function} fn - * @param {Number} timeout - * @param {Object} context - * @returns {number} - */ -function setTimeoutContext(fn, timeout, context) { - return setTimeout(bindFn(fn, context), timeout); -} - -/** - * if the argument is an array, we want to execute the fn on each entry - * if it aint an array we don't want to do a thing. - * this is used by all the methods that accept a single and array argument. - * @param {*|Array} arg - * @param {String} fn - * @param {Object} [context] - * @returns {Boolean} - */ -function invokeArrayArg(arg, fn, context) { - if (Array.isArray(arg)) { - each(arg, context[fn], context); - return true; - } - return false; -} - -/** - * walk objects and arrays - * @param {Object} obj - * @param {Function} iterator - * @param {Object} context - */ -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); - } - } -} - -/** - * wrap a method with a deprecation warning and stack trace - * @param {Function} method - * @param {String} name - * @param {String} message - * @returns {Function} A new function wrapping the supplied method. - */ -function deprecate(method, name, message) { - var deprecationMessage = 'DEPRECATED METHOD: ' + name + '\n' + message + ' AT \n'; - return function() { - var e = new Error('get-stack-trace'); - var stack = e && e.stack ? e.stack.replace(/^[^\(]+?[\n$]/gm, '') - .replace(/^\s+at\s+/gm, '') - .replace(/^Object.\s*\(/gm, '{anonymous}()@') : 'Unknown Stack Trace'; - - var log = window.console && (window.console.warn || window.console.log); - if (log) { - log.call(window.console, deprecationMessage, stack); - } - return method.apply(this, arguments); - }; -} - -/** - * extend object. - * means that properties in dest will be overwritten by the ones in src. - * @param {Object} target - * @param {...Object} objects_to_assign - * @returns {Object} target - */ -var assign; -if (typeof Object.assign !== 'function') { - assign = function assign(target) { - if (target === undefined || target === null) { - throw new TypeError('Cannot convert undefined or null to object'); - } - - var output = Object(target); - for (var index = 1; index < arguments.length; index++) { - var source = arguments[index]; - if (source !== undefined && source !== null) { - for (var nextKey in source) { - if (source.hasOwnProperty(nextKey)) { - output[nextKey] = source[nextKey]; - } - } - } - } - return output; - }; -} else { - assign = Object.assign; -} - -/** - * extend object. - * means that properties in dest will be overwritten by the ones in src. - * @param {Object} dest - * @param {Object} src - * @param {Boolean=false} [merge] - * @returns {Object} dest - */ -var extend = deprecate(function extend(dest, src, merge) { - var keys = Object.keys(src); - var i = 0; - while (i < keys.length) { - if (!merge || (merge && dest[keys[i]] === undefined)) { - dest[keys[i]] = src[keys[i]]; - } - i++; - } - return dest; -}, 'extend', 'Use `assign`.'); - -/** - * merge the values from src in the dest. - * means that properties that exist in dest will not be overwritten by src - * @param {Object} dest - * @param {Object} src - * @returns {Object} dest - */ -var merge = deprecate(function merge(dest, src) { - return extend(dest, src, true); -}, 'merge', 'Use `assign`.'); - -/** - * simple class inheritance - * @param {Function} child - * @param {Function} base - * @param {Object} [properties] - */ -function inherit(child, base, properties) { - var baseP = base.prototype, - childP; - - childP = child.prototype = Object.create(baseP); - childP.constructor = child; - childP._super = baseP; - - if (properties) { - assign(childP, properties); - } -} - -/** - * simple function bind - * @param {Function} fn - * @param {Object} context - * @returns {Function} - */ -function bindFn(fn, context) { - return function boundFn() { - return fn.apply(context, arguments); - }; -} - -/** - * let a boolean value also be a function that must return a boolean - * this first item in args will be used as the context - * @param {Boolean|Function} val - * @param {Array} [args] - * @returns {Boolean} - */ -function boolOrFn(val, args) { - if (typeof val == TYPE_FUNCTION) { - return val.apply(args ? args[0] || undefined : undefined, args); - } - return val; -} - -/** - * use the val2 when val1 is undefined - * @param {*} val1 - * @param {*} val2 - * @returns {*} - */ -function ifUndefined(val1, val2) { - return (val1 === undefined) ? val2 : val1; -} - -/** - * addEventListener with multiple events at once - * @param {EventTarget} target - * @param {String} types - * @param {Function} handler - */ -function addEventListeners(target, types, handler) { - each(splitStr(types), function(type) { - target.addEventListener(type, handler, false); - }); -} - -/** - * removeEventListener with multiple events at once - * @param {EventTarget} target - * @param {String} types - * @param {Function} handler - */ -function removeEventListeners(target, types, handler) { - each(splitStr(types), function(type) { - target.removeEventListener(type, handler, false); - }); -} - -/** - * find if a node is in the given parent - * @method hasParent - * @param {HTMLElement} node - * @param {HTMLElement} parent - * @return {Boolean} found - */ -function hasParent(node, parent) { - while (node) { - if (node == parent) { - return true; - } - node = node.parentNode; - } - return false; -} - -/** - * small indexOf wrapper - * @param {String} str - * @param {String} find - * @returns {Boolean} found - */ -function inStr(str, find) { - return str.indexOf(find) > -1; -} - -/** - * split string on whitespace - * @param {String} str - * @returns {Array} words - */ -function splitStr(str) { - return str.trim().split(/\s+/g); -} - -/** - * find if a array contains the object using indexOf or a simple polyFill - * @param {Array} src - * @param {String} find - * @param {String} [findByKey] - * @return {Boolean|Number} false when not found, or the index - */ -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; - } -} - -/** - * convert array-like objects to real arrays - * @param {Object} obj - * @returns {Array} - */ -function toArray(obj) { - return Array.prototype.slice.call(obj, 0); -} - -/** - * unique array with objects based on a key (like 'id') or just by the array's value - * @param {Array} src [{id:1},{id:2},{id:1}] - * @param {String} [key] - * @param {Boolean} [sort=False] - * @returns {Array} [{id:1},{id:2}] - */ -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]; - }); - } - } - - return results; -} - -/** - * get the prefixed property - * @param {Object} obj - * @param {String} property - * @returns {String|Undefined} prefixed - */ -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; -} - -/** - * get a unique id - * @returns {number} uniqueId - */ -var _uniqueId = 1; -function uniqueId() { - return _uniqueId++; -} - -/** - * get the window object of an element - * @param {HTMLElement} element - * @returns {DocumentView|Window} - */ -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; -var DIRECTION_LEFT = 2; -var DIRECTION_RIGHT = 4; -var DIRECTION_UP = 8; -var DIRECTION_DOWN = 16; - -var DIRECTION_HORIZONTAL = DIRECTION_LEFT | DIRECTION_RIGHT; -var DIRECTION_VERTICAL = DIRECTION_UP | DIRECTION_DOWN; -var DIRECTION_ALL = DIRECTION_HORIZONTAL | DIRECTION_VERTICAL; - -var PROPS_XY = ['x', 'y']; -var PROPS_CLIENT_XY = ['clientX', 'clientY']; - -/** - * create new input type manager - * @param {Manager} manager - * @param {Function} callback - * @returns {Input} - * @constructor - */ -function Input(manager, callback) { - var self = this; - this.manager = manager; - this.callback = callback; - this.element = manager.element; - this.target = manager.options.inputTarget; - - // smaller wrapper around the handler, for the scope and the enabled state of the manager, - // so when disabled the input events are completely bypassed. - this.domHandler = function(ev) { - if (boolOrFn(manager.options.enable, [manager])) { - self.handler(ev); - } - }; - - this.init(); - -} - -Input.prototype = { - /** - * should handle the inputEvent data and trigger the callback - * @virtual - */ - handler: function() { }, - - /** - * bind the events - */ - 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); - }, - - /** - * unbind the events - */ - 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); - } -}; - -/** - * create new input type manager - * called by the Manager constructor - * @param {Hammer} manager - * @returns {Input} - */ -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); -} - -/** - * handle input events - * @param {Manager} manager - * @param {String} eventType - * @param {Object} input - */ -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 = {}; - } - - // source event is the normalized value of the domEvents - // like 'touchstart, mouseup, pointerdown' - input.eventType = eventType; - - // compute scale, rotation etc - computeInputData(manager, input); - - // emit secret event - manager.emit('hammer.input', input); - - manager.recognize(input); - manager.session.prevInput = input; -} - -/** - * extend the data with some usable properties like scale, rotate, velocity etc - * @param {Object} manager - * @param {Object} input - */ -function computeInputData(manager, input) { - var session = manager.session; - var pointers = input.pointers; - var pointersLength = pointers.length; - - // store the first input to calculate the distance and direction - if (!session.firstInput) { - session.firstInput = simpleCloneInputData(input); - } - - // to compute scale and rotation we need to store the multiple touches - 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); - - // find the correct target - 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); -} - -/** - * velocity is calculated every x ms - * @param {Object} session - * @param {Object} input - */ -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 { - // use latest velocity info if it doesn't overtake a minimum period - velocity = last.velocity; - velocityX = last.velocityX; - velocityY = last.velocityY; - direction = last.direction; - } - - input.velocity = velocity; - input.velocityX = velocityX; - input.velocityY = velocityY; - input.direction = direction; -} - -/** - * create a simple clone from the input used for storage of firstInput and firstMultiple - * @param {Object} input - * @returns {Object} clonedInputData - */ -function simpleCloneInputData(input) { - // make a simple copy of the pointers because we will get a reference if we don't - // we only need clientXY for the calculations - 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 - }; -} - -/** - * get the center of all the pointers - * @param {Array} pointers - * @return {Object} center contains `x` and `y` properties - */ -function getCenter(pointers) { - var pointersLength = pointers.length; - - // no need to loop when only one touch - 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) - }; -} - -/** - * calculate the velocity between two points. unit is in px per ms. - * @param {Number} deltaTime - * @param {Number} x - * @param {Number} y - * @return {Object} velocity `x` and `y` - */ -function getVelocity(deltaTime, x, y) { - return { - x: x / deltaTime || 0, - y: y / deltaTime || 0 - }; -} - -/** - * get the direction between two points - * @param {Number} x - * @param {Number} y - * @return {Number} direction - */ -function getDirection(x, y) { - if (x === y) { - return DIRECTION_NONE; - } - - if (abs(x) >= abs(y)) { - return x < 0 ? DIRECTION_LEFT : DIRECTION_RIGHT; - } - return y < 0 ? DIRECTION_UP : DIRECTION_DOWN; -} - -/** - * calculate the absolute distance between two points - * @param {Object} p1 {x, y} - * @param {Object} p2 {x, y} - * @param {Array} [props] containing x and y keys - * @return {Number} distance - */ -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)); -} - -/** - * calculate the angle between two coordinates - * @param {Object} p1 - * @param {Object} p2 - * @param {Array} [props] containing x and y keys - * @return {Number} angle - */ -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; -} - -/** - * calculate the rotation degrees between two pointersets - * @param {Array} start array of pointers - * @param {Array} end array of pointers - * @return {Number} rotation - */ -function getRotation(start, end) { - return getAngle(end[1], end[0], PROPS_CLIENT_XY) + getAngle(start[1], start[0], PROPS_CLIENT_XY); -} - -/** - * calculate the scale factor between two pointersets - * no scale is 1, and goes down to 0 when pinched together, and bigger when pinched out - * @param {Array} start array of pointers - * @param {Array} end array of pointers - * @return {Number} scale - */ -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'; - -/** - * Mouse events input - * @constructor - * @extends Input - */ -function MouseInput() { - this.evEl = MOUSE_ELEMENT_EVENTS; - this.evWin = MOUSE_WINDOW_EVENTS; - - this.allow = true; // used by Input.TouchMouse to disable mouse events - this.pressed = false; // mousedown state - - Input.apply(this, arguments); -} - -inherit(MouseInput, Input, { - /** - * handle mouse events - * @param {Object} ev - */ - handler: function MEhandler(ev) { - var eventType = MOUSE_INPUT_MAP[ev.type]; - - // on start we want to have the left mouse button down - if (eventType & INPUT_START && ev.button === 0) { - this.pressed = true; - } - - if (eventType & INPUT_MOVE && ev.which !== 1) { - eventType = INPUT_END; - } - - // mouse must be down, and mouse events are allowed (see the TouchMouse input) - 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 -}; - -// in IE10 the pointer types is defined as an enum -var IE10_POINTER_TYPE_ENUM = { - 2: INPUT_TYPE_TOUCH, - 3: INPUT_TYPE_PEN, - 4: INPUT_TYPE_MOUSE, - 5: INPUT_TYPE_KINECT // see https://twitter.com/jacobrossi/status/480596438489890816 -}; - -var POINTER_ELEMENT_EVENTS = 'pointerdown'; -var POINTER_WINDOW_EVENTS = 'pointermove pointerup pointercancel'; - -// IE10 has prefixed support, and case-sensitive -if (window.MSPointerEvent && !window.PointerEvent) { - POINTER_ELEMENT_EVENTS = 'MSPointerDown'; - POINTER_WINDOW_EVENTS = 'MSPointerMove MSPointerUp MSPointerCancel'; -} - -/** - * Pointer events input - * @constructor - * @extends Input - */ -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, { - /** - * handle mouse events - * @param {Object} ev - */ - 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); - - // get index of the event in the store - var storeIndex = inArray(store, ev.pointerId, 'pointerId'); - - // start and mouse must be down - 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; - } - - // it not found, so the pointer hasn't been down (so it's probably a hover) - if (storeIndex < 0) { - return; - } - - // update the event in the store - store[storeIndex] = ev; - - this.callback(this.manager, eventType, { - pointers: store, - changedPointers: [ev], - pointerType: pointerType, - srcEvent: ev - }); - - if (removePointer) { - // remove from the store - 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'; - -/** - * Touch events input - * @constructor - * @extends Input - */ -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]; - - // should we handle the touch events? - if (type === INPUT_START) { - this.started = true; - } - - if (!this.started) { - return; - } - - var touches = normalizeSingleTouches.call(this, ev, type); - - // when done, reset the started state - 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 - }); - } -}); - -/** - * @this {TouchInput} - * @param {Object} ev - * @param {Number} type flag - * @returns {undefined|Array} [all, changed] - */ -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'; - -/** - * Multi-user touch events input - * @constructor - * @extends Input - */ -function TouchInput() { - 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 - }); - } -}); - -/** - * @this {TouchInput} - * @param {Object} ev - * @param {Number} type flag - * @returns {undefined|Array} [all, changed] - */ -function getTouches(ev, type) { - var allTouches = toArray(ev.touches); - var targetIds = this.targetIds; - - // when there is only one touch, the process can be simplified - 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; - - // get target touches from touches - targetTouches = allTouches.filter(function(touch) { - return hasParent(touch.target, target); - }); - - // collect touches - if (type === INPUT_START) { - i = 0; - while (i < targetTouches.length) { - targetIds[targetTouches[i].identifier] = true; - i++; - } - } - - // filter changed touches to only contain touches that exist in the collected target ids - i = 0; - while (i < changedTouches.length) { - if (targetIds[changedTouches[i].identifier]) { - changedTargetTouches.push(changedTouches[i]); - } - - // cleanup removed touches - if (type & (INPUT_END | INPUT_CANCEL)) { - delete targetIds[changedTouches[i].identifier]; - } - i++; - } - - if (!changedTargetTouches.length) { - return; - } - - return [ - // merge targetTouches with changedTargetTouches so it contains ALL touches, including 'end' and 'cancel' - uniqueArray(targetTouches.concat(changedTargetTouches), 'identifier', true), - changedTargetTouches - ]; -} - -/** - * Combined touch and mouse input - * - * Touch has a higher priority then mouse, and while touching no mouse events are allowed. - * This because touch devices also emit mouse events while doing a touch. - * - * @constructor - * @extends Input - */ -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, { - /** - * handle mouse and touch events - * @param {Hammer} manager - * @param {String} inputEvent - * @param {Object} inputData - */ - handler: function TMEhandler(manager, inputEvent, inputData) { - var isTouch = (inputData.pointerType == INPUT_TYPE_TOUCH), - isMouse = (inputData.pointerType == INPUT_TYPE_MOUSE); - - // when we're in a touch event, so block all upcoming mouse events - // most mobile browser also emit mouseevents, right after touchstart - if (isTouch) { - this.mouse.allow = false; - } else if (isMouse && !this.mouse.allow) { - return; - } - - // reset the allowMouse when we're done - if (inputEvent & (INPUT_END | INPUT_CANCEL)) { - this.mouse.allow = true; - } - - this.callback(manager, inputEvent, inputData); - }, - - /** - * remove the event listeners - */ - 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; - -// magical touchAction value -var TOUCH_ACTION_COMPUTE = 'compute'; -var TOUCH_ACTION_AUTO = 'auto'; -var TOUCH_ACTION_MANIPULATION = 'manipulation'; // not implemented -var TOUCH_ACTION_NONE = 'none'; -var TOUCH_ACTION_PAN_X = 'pan-x'; -var TOUCH_ACTION_PAN_Y = 'pan-y'; - -/** - * Touch Action - * sets the touchAction property or uses the js alternative - * @param {Manager} manager - * @param {String} value - * @constructor - */ -function TouchAction(manager, value) { - this.manager = manager; - this.set(value); -} - -TouchAction.prototype = { - /** - * set the touchAction value on the element or enable the polyfill - * @param {String} value - */ - set: function(value) { - // find out the touch-action by the event handlers - 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(); - }, - - /** - * just re-set the touchAction value - */ - update: function() { - this.set(this.manager.options.touchAction); - }, - - /** - * compute the value for the touchAction property based on the recognizer's settings - * @returns {String} value - */ - 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(' ')); - }, - - /** - * this method is called on each input cycle and provides the preventing of the browser behavior - * @param {Object} input - */ - preventDefaults: function(input) { - // not needed with native support for the touchAction property - if (NATIVE_TOUCH_ACTION) { - return; - } - - var srcEvent = input.srcEvent; - var direction = input.offsetDirection; - - // if the touch action did prevented once this session - 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) { - //do not prevent defaults if this is a tap gesture - - var isTapPointer = input.pointers.length === 1; - var isTapMovement = input.distance < 2; - var isTapTouchTime = input.deltaTime < 250; - - if (isTapPointer && isTapMovement && isTapTouchTime) { - return; - } - } - - if (hasPanX && hasPanY) { - // `pan-x pan-y` means browser handles all scrolling/panning, do not prevent - return; - } - - if (hasNone || - (hasPanY && direction & DIRECTION_HORIZONTAL) || - (hasPanX && direction & DIRECTION_VERTICAL)) { - return this.preventSrc(srcEvent); - } - }, - - /** - * call preventDefault to prevent the browser's default behavior (scrolling in most cases) - * @param {Object} srcEvent - */ - preventSrc: function(srcEvent) { - this.manager.session.prevented = true; - srcEvent.preventDefault(); - } -}; - -/** - * when the touchActions are collected they are not a valid value, so we need to clean things up. * - * @param {String} actions - * @returns {*} - */ -function cleanTouchActions(actions) { - // none - 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 both pan-x and pan-y are set (different recognizers - // for different directions, e.g. horizontal pan but vertical swipe?) - // we need none (as otherwise with pan-x pan-y combined none of these - // recognizers will work, since the browser would handle all panning - if (hasPanX && hasPanY) { - return TOUCH_ACTION_NONE; - } - - // pan-x OR pan-y - if (hasPanX || hasPanY) { - return hasPanX ? TOUCH_ACTION_PAN_X : TOUCH_ACTION_PAN_Y; - } - - // manipulation - if (inStr(actions, TOUCH_ACTION_MANIPULATION)) { - return TOUCH_ACTION_MANIPULATION; - } - - return TOUCH_ACTION_AUTO; -} - -/** - * Recognizer flow explained; * - * All recognizers have the initial state of POSSIBLE when a input session starts. - * The definition of a input session is from the first input until the last input, with all it's movement in it. * - * Example session for mouse-input: mousedown -> mousemove -> mouseup - * - * On each recognizing cycle (see Manager.recognize) the .recognize() method is executed - * which determines with state it should be. - * - * If the recognizer has the state FAILED, CANCELLED or RECOGNIZED (equals ENDED), it is reset to - * POSSIBLE to give it another change on the next cycle. - * - * Possible - * | - * +-----+---------------+ - * | | - * +-----+-----+ | - * | | | - * Failed Cancelled | - * +-------+------+ - * | | - * Recognized Began - * | - * Changed - * | - * Ended/Recognized - */ -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; - -/** - * Recognizer - * Every recognizer needs to extend from this class. - * @constructor - * @param {Object} options - */ -function Recognizer(options) { - this.options = assign({}, this.defaults, options || {}); - - this.id = uniqueId(); - - this.manager = null; - - // default is enable true - this.options.enable = ifUndefined(this.options.enable, true); - - this.state = STATE_POSSIBLE; - - this.simultaneous = {}; - this.requireFail = []; -} - -Recognizer.prototype = { - /** - * @virtual - * @type {Object} - */ - defaults: {}, - - /** - * set options - * @param {Object} options - * @return {Recognizer} - */ - set: function(options) { - assign(this.options, options); - - // also update the touchAction, in case something changed about the directions/enabled state - this.manager && this.manager.touchAction.update(); - return this; - }, - - /** - * recognize simultaneous with an other recognizer. - * @param {Recognizer} otherRecognizer - * @returns {Recognizer} 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; - }, - - /** - * drop the simultaneous link. it doesnt remove the link on the other recognizer. - * @param {Recognizer} otherRecognizer - * @returns {Recognizer} this - */ - dropRecognizeWith: function(otherRecognizer) { - if (invokeArrayArg(otherRecognizer, 'dropRecognizeWith', this)) { - return this; - } - - otherRecognizer = getRecognizerByNameIfManager(otherRecognizer, this); - delete this.simultaneous[otherRecognizer.id]; - return this; - }, - - /** - * recognizer can only run when an other is failing - * @param {Recognizer} otherRecognizer - * @returns {Recognizer} 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; - }, - - /** - * drop the requireFailure link. it does not remove the link on the other recognizer. - * @param {Recognizer} otherRecognizer - * @returns {Recognizer} 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; - }, - - /** - * has require failures boolean - * @returns {boolean} - */ - hasRequireFailures: function() { - return this.requireFail.length > 0; - }, - - /** - * if the recognizer can recognize simultaneous with an other recognizer - * @param {Recognizer} otherRecognizer - * @returns {Boolean} - */ - canRecognizeWith: function(otherRecognizer) { - return !!this.simultaneous[otherRecognizer.id]; - }, - - /** - * You should use `tryEmit` instead of `emit` directly to check - * that all the needed recognizers has failed before emitting. - * @param {Object} input - */ - emit: function(input) { - var self = this; - var state = this.state; - - function emit(event) { - self.manager.emit(event, input); - } - - // 'panstart' and 'panmove' - if (state < STATE_ENDED) { - emit(self.options.event + stateStr(state)); - } - - emit(self.options.event); // simple 'eventName' events - - if (input.additionalEvent) { // additional event(panleft, panright, pinchin, pinchout...) - emit(input.additionalEvent); - } - - // panend and pancancel - if (state >= STATE_ENDED) { - emit(self.options.event + stateStr(state)); - } - }, - - /** - * Check that all the require failure recognizers has failed, - * if true, it emits a gesture event, - * otherwise, setup the state to FAILED. - * @param {Object} input - */ - tryEmit: function(input) { - if (this.canEmit()) { - return this.emit(input); - } - // it's failing anyway - this.state = STATE_FAILED; - }, - - /** - * can we emit? - * @returns {boolean} - */ - canEmit: function() { - var i = 0; - while (i < this.requireFail.length) { - if (!(this.requireFail[i].state & (STATE_FAILED | STATE_POSSIBLE))) { - return false; - } - i++; - } - return true; - }, - - /** - * update the recognizer - * @param {Object} inputData - */ - recognize: function(inputData) { - // make a new copy of the inputData - // so we can change the inputData without messing up the other recognizers - var inputDataClone = assign({}, inputData); - - // is is enabled and allow recognizing? - if (!boolOrFn(this.options.enable, [this, inputDataClone])) { - this.reset(); - this.state = STATE_FAILED; - return; - } - - // reset when we've reached the end - if (this.state & (STATE_RECOGNIZED | STATE_CANCELLED | STATE_FAILED)) { - this.state = STATE_POSSIBLE; - } - - this.state = this.process(inputDataClone); - - // the recognizer has recognized a gesture - // so trigger an event - if (this.state & (STATE_BEGAN | STATE_CHANGED | STATE_ENDED | STATE_CANCELLED)) { - this.tryEmit(inputDataClone); - } - }, - - /** - * return the state of the recognizer - * the actual recognizing happens in this method - * @virtual - * @param {Object} inputData - * @returns {Const} STATE - */ - process: function(inputData) { }, // jshint ignore:line - - /** - * return the preferred touch-action - * @virtual - * @returns {Array} - */ - getTouchAction: function() { }, - - /** - * called when the gesture isn't allowed to recognize - * like when another is being recognized or it is disabled - * @virtual - */ - reset: function() { } -}; - -/** - * get a usable string, used as event postfix - * @param {Const} state - * @returns {String} state - */ -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 ''; -} - -/** - * direction cons to string - * @param {Const} direction - * @returns {String} - */ -function directionStr(direction) { - if (direction == DIRECTION_DOWN) { - return 'down'; - } else if (direction == DIRECTION_UP) { - return 'up'; - } else if (direction == DIRECTION_LEFT) { - return 'left'; - } else if (direction == DIRECTION_RIGHT) { - return 'right'; - } - return ''; -} - -/** - * get a recognizer by name if it is bound to a manager - * @param {Recognizer|String} otherRecognizer - * @param {Recognizer} recognizer - * @returns {Recognizer} - */ -function getRecognizerByNameIfManager(otherRecognizer, recognizer) { - var manager = recognizer.manager; - if (manager) { - return manager.get(otherRecognizer); - } - return otherRecognizer; -} - -/** - * This recognizer is just used as a base for the simple attribute recognizers. - * @constructor - * @extends Recognizer - */ -function AttrRecognizer() { - Recognizer.apply(this, arguments); -} - -inherit(AttrRecognizer, Recognizer, { - /** - * @namespace - * @memberof AttrRecognizer - */ - defaults: { - /** - * @type {Number} - * @default 1 - */ - pointers: 1 - }, - - /** - * Used to check if it the recognizer receives valid input, like input.distance > 10. - * @memberof AttrRecognizer - * @param {Object} input - * @returns {Boolean} recognized - */ - attrTest: function(input) { - var optionPointers = this.options.pointers; - return optionPointers === 0 || input.pointers.length === optionPointers; - }, - - /** - * Process the input and return the state for the recognizer - * @memberof AttrRecognizer - * @param {Object} input - * @returns {*} State - */ - process: function(input) { - var state = this.state; - var eventType = input.eventType; - - var isRecognized = state & (STATE_BEGAN | STATE_CHANGED); - var isValid = this.attrTest(input); - - // on cancel input and we've recognized before, return STATE_CANCELLED - 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; - } -}); - -/** - * Pan - * Recognized when the pointer is down and moved in the allowed direction. - * @constructor - * @extends AttrRecognizer - */ -function PanRecognizer() { - AttrRecognizer.apply(this, arguments); - - this.pX = null; - this.pY = null; -} - -inherit(PanRecognizer, AttrRecognizer, { - /** - * @namespace - * @memberof PanRecognizer - */ - defaults: { - event: 'pan', - threshold: 10, - pointers: 1, - direction: DIRECTION_ALL - }, - - getTouchAction: function() { - var direction = this.options.direction; - var actions = []; - if (direction & DIRECTION_HORIZONTAL) { - actions.push(TOUCH_ACTION_PAN_Y); - } - if (direction & 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; - - // lock to axis? - if (!(direction & options.direction)) { - if (options.direction & DIRECTION_HORIZONTAL) { - direction = (x === 0) ? DIRECTION_NONE : (x < 0) ? DIRECTION_LEFT : 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); - } -}); - -/** - * Pinch - * Recognized when two or more pointers are moving toward (zoom-in) or away from each other (zoom-out). - * @constructor - * @extends AttrRecognizer - */ -function PinchRecognizer() { - AttrRecognizer.apply(this, arguments); -} - -inherit(PinchRecognizer, AttrRecognizer, { - /** - * @namespace - * @memberof PinchRecognizer - */ - 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); - } -}); - -/** - * Press - * Recognized when the pointer is down for x ms without any movement. - * @constructor - * @extends Recognizer - */ -function PressRecognizer() { - Recognizer.apply(this, arguments); - - this._timer = null; - this._input = null; -} - -inherit(PressRecognizer, Recognizer, { - /** - * @namespace - * @memberof PressRecognizer - */ - defaults: { - event: 'press', - pointers: 1, - time: 251, // minimal time of the pointer to be pressed - threshold: 9 // a minimal movement is ok, but keep it low - }, - - 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; - - // we only allow little movement - // and we've reached an end event, so a tap is possible - 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); - } - } -}); - -/** - * Rotate - * Recognized when two or more pointer are moving in a circular motion. - * @constructor - * @extends AttrRecognizer - */ -function RotateRecognizer() { - AttrRecognizer.apply(this, arguments); -} - -inherit(RotateRecognizer, AttrRecognizer, { - /** - * @namespace - * @memberof RotateRecognizer - */ - 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); - } -}); - -/** - * Swipe - * Recognized when the pointer is moving fast (velocity), with enough distance in the allowed direction. - * @constructor - * @extends AttrRecognizer - */ -function SwipeRecognizer() { - AttrRecognizer.apply(this, arguments); -} - -inherit(SwipeRecognizer, AttrRecognizer, { - /** - * @namespace - * @memberof SwipeRecognizer - */ - defaults: { - event: 'swipe', - threshold: 10, - velocity: 0.3, - direction: DIRECTION_HORIZONTAL | DIRECTION_VERTICAL, - pointers: 1 - }, - - getTouchAction: function() { - return PanRecognizer.prototype.getTouchAction.call(this); - }, - - attrTest: function(input) { - var direction = this.options.direction; - var velocity; - - if (direction & (DIRECTION_HORIZONTAL | DIRECTION_VERTICAL)) { - velocity = input.overallVelocity; - } else if (direction & DIRECTION_HORIZONTAL) { - velocity = input.overallVelocityX; - } else if (direction & 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); - } -}); - -/** - * A tap is ecognized when the pointer is doing a small tap/click. Multiple taps are recognized if they occur - * between the given interval and position. The delay option can be used to recognize multi-taps without firing - * a single tap. - * - * The eventData from the emitted event contains the property `tapCount`, which contains the amount of - * multi-taps being recognized. - * @constructor - * @extends Recognizer - */ -function TapRecognizer() { - Recognizer.apply(this, arguments); - - // previous time and center, - // used for tap counting - this.pTime = false; - this.pCenter = false; - - this._timer = null; - this._input = null; - this.count = 0; -} - -inherit(TapRecognizer, Recognizer, { - /** - * @namespace - * @memberof PinchRecognizer - */ - defaults: { - event: 'tap', - pointers: 1, - taps: 1, - interval: 300, // max time between the multi-tap taps - time: 250, // max time of the pointer to be down (like finger on the screen) - threshold: 9, // a minimal movement is ok, but keep it low - posThreshold: 10 // a multi-tap can be a bit off the initial position - }, - - 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(); - } - - // we only allow little movement - // and we've reached an end event, so a tap is possible - 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; - - // if tap count matches we have recognized it, - // else it has began recognizing... - var tapCount = this.count % options.taps; - if (tapCount === 0) { - // no failing requirements, immediately trigger the tap event - // or wait as long as the multitap interval to trigger - 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); - } - } -}); - -/** - * Simple way to create a manager with a default set of recognizers. - * @param {HTMLElement} element - * @param {Object} [options] - * @constructor - */ -function Hammer(element, options) { - options = options || {}; - options.recognizers = ifUndefined(options.recognizers, Hammer.defaults.preset); - return new Manager(element, options); -} - -/** - * @const {string} - */ -Hammer.VERSION = '2.0.6'; - -/** - * default settings - * @namespace - */ -Hammer.defaults = { - /** - * set if DOM events are being triggered. - * But this is slower and unused by simple implementations, so disabled by default. - * @type {Boolean} - * @default false - */ - domEvents: false, - - /** - * The value for the touchAction property/fallback. - * When set to `compute` it will magically set the correct value based on the added recognizers. - * @type {String} - * @default compute - */ - touchAction: TOUCH_ACTION_COMPUTE, - - /** - * @type {Boolean} - * @default true - */ - enable: true, - - /** - * EXPERIMENTAL FEATURE -- can be removed/changed - * Change the parent input target element. - * If Null, then it is being set the to main element. - * @type {Null|EventTarget} - * @default null - */ - inputTarget: null, - - /** - * force an input class - * @type {Null|Function} - * @default null - */ - inputClass: null, - - /** - * Default recognizer setup when calling `Hammer()` - * When creating a new Manager these will be skipped. - * @type {Array} - */ - preset: [ - // RecognizerClass, options, [recognizeWith, ...], [requireFailure, ...] - [RotateRecognizer, {enable: false}], - [PinchRecognizer, {enable: false}, ['rotate']], - [SwipeRecognizer, {direction: DIRECTION_HORIZONTAL}], - [PanRecognizer, {direction: DIRECTION_HORIZONTAL}, ['swipe']], - [TapRecognizer], - [TapRecognizer, {event: 'doubletap', taps: 2}, ['tap']], - [PressRecognizer] - ], - - /** - * Some CSS properties can be used to improve the working of Hammer. - * Add them to this method and they will be set when creating a new Manager. - * @namespace - */ - cssProps: { - /** - * Disables text selection to improve the dragging gesture. Mainly for desktop browsers. - * @type {String} - * @default 'none' - */ - userSelect: 'none', - - /** - * Disable the Windows Phone grippers when pressing an element. - * @type {String} - * @default 'none' - */ - touchSelect: 'none', - - /** - * Disables the default callout shown when you touch and hold a touch target. - * On iOS, when you touch and hold a touch target such as a link, Safari displays - * a callout containing information about the link. This property allows you to disable that callout. - * @type {String} - * @default 'none' - */ - touchCallout: 'none', - - /** - * Specifies whether zooming is enabled. Used by IE10> - * @type {String} - * @default 'none' - */ - contentZooming: 'none', - - /** - * Specifies that an entire element should be draggable instead of its contents. Mainly for desktop browsers. - * @type {String} - * @default 'none' - */ - userDrag: 'none', - - /** - * Overrides the highlight color shown when the user taps a link or a JavaScript - * clickable element in iOS. This property obeys the alpha value, if specified. - * @type {String} - * @default 'rgba(0,0,0,0)' - */ - tapHighlightColor: 'rgba(0,0,0,0)' - } -}; - -var STOP = 1; -var FORCED_STOP = 2; - -/** - * Manager - * @param {HTMLElement} element - * @param {Object} [options] - * @constructor - */ -function Manager(element, options) { - this.options = assign({}, Hammer.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 options - * @param {Object} options - * @returns {Manager} - */ - set: function(options) { - assign(this.options, options); - - // Options that need a little more setup - if (options.touchAction) { - this.touchAction.update(); - } - if (options.inputTarget) { - // Clean up existing event listeners and reinitialize - this.input.destroy(); - this.input.target = options.inputTarget; - this.input.init(); - } - return this; - }, - - /** - * stop recognizing for this session. - * This session will be discarded, when a new [input]start event is fired. - * When forced, the recognizer cycle is stopped immediately. - * @param {Boolean} [force] - */ - stop: function(force) { - this.session.stopped = force ? FORCED_STOP : STOP; - }, - - /** - * run the recognizers! - * called by the inputHandler function on every movement of the pointers (touches) - * it walks through all the recognizers and tries to detect the gesture that is being made - * @param {Object} inputData - */ - recognize: function(inputData) { - var session = this.session; - if (session.stopped) { - return; - } - - // run the touch-action polyfill - this.touchAction.preventDefaults(inputData); - - var recognizer; - var recognizers = this.recognizers; - - // this holds the recognizer that is being recognized. - // so the recognizer's state needs to be BEGAN, CHANGED, ENDED or RECOGNIZED - // if no recognizer is detecting a thing, it is set to `null` - var curRecognizer = session.curRecognizer; - - // reset when the last recognizer is recognized - // or when we're in a new session - if (!curRecognizer || (curRecognizer && curRecognizer.state & STATE_RECOGNIZED)) { - curRecognizer = session.curRecognizer = null; - } - - var i = 0; - while (i < recognizers.length) { - recognizer = recognizers[i]; - - // find out if we are allowed try to recognize the input for this one. - // 1. allow if the session is NOT forced stopped (see the .stop() method) - // 2. allow if we still haven't recognized a gesture in this session, or the this recognizer is the one - // that is being recognized. - // 3. allow if the recognizer is allowed to run simultaneous with the current recognized recognizer. - // this can be setup with the `recognizeWith()` method on the recognizer. - if (session.stopped !== FORCED_STOP && ( // 1 - !curRecognizer || recognizer == curRecognizer || // 2 - recognizer.canRecognizeWith(curRecognizer))) { // 3 - recognizer.recognize(inputData); - } else { - recognizer.reset(); - } - - // if the recognizer has been recognizing the input as a valid gesture, we want to store this one as the - // current active recognizer. but only if we don't already have an active recognizer - if (!curRecognizer && recognizer.state & (STATE_BEGAN | STATE_CHANGED | STATE_ENDED)) { - curRecognizer = session.curRecognizer = recognizer; - } - i++; - } - }, - - /** - * get a recognizer by its event name. - * @param {Recognizer|String} recognizer - * @returns {Recognizer|Null} - */ - 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 a recognizer to the manager - * existing recognizers with the same event name will be removed - * @param {Recognizer} recognizer - * @returns {Recognizer|Manager} - */ - add: function(recognizer) { - if (invokeArrayArg(recognizer, 'add', this)) { - return this; - } - - // remove existing - 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 a recognizer by name or instance - * @param {Recognizer|String} recognizer - * @returns {Manager} - */ - remove: function(recognizer) { - if (invokeArrayArg(recognizer, 'remove', this)) { - return this; - } - - recognizer = this.get(recognizer); - - // let's make sure this recognizer exists - if (recognizer) { - var recognizers = this.recognizers; - var index = inArray(recognizers, recognizer); - - if (index !== -1) { - recognizers.splice(index, 1); - this.touchAction.update(); - } - } - - return this; - }, - - /** - * bind event - * @param {String} events - * @param {Function} handler - * @returns {EventEmitter} this - */ - on: function(events, handler) { - var handlers = this.handlers; - each(splitStr(events), function(event) { - handlers[event] = handlers[event] || []; - handlers[event].push(handler); - }); - return this; - }, - - /** - * unbind event, leave emit blank to remove all handlers - * @param {String} events - * @param {Function} [handler] - * @returns {EventEmitter} 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 event to the listeners - * @param {String} event - * @param {Object} data - */ - emit: function(event, data) { - // we also want to trigger dom events - if (this.options.domEvents) { - triggerDomEvent(event, data); - } - - // no handlers, so skip it all - 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 the manager and unbinds all events - * it doesn't unbind dom events, that is the user own responsibility - */ - destroy: function() { - this.element && toggleCssProps(this, false); - - this.handlers = {}; - this.session = {}; - this.input.destroy(); - this.element = null; - } -}; - -/** - * add/remove the css properties as defined in manager.options.cssProps - * @param {Manager} manager - * @param {Boolean} add - */ -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 : ''; - }); -} - -/** - * trigger dom event - * @param {String} event - * @param {Object} data - */ -function triggerDomEvent(event, data) { - var gestureEvent = document.createEvent('Event'); - gestureEvent.initEvent(event, true, true); - gestureEvent.gesture = data; - data.target.dispatchEvent(gestureEvent); -} - -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: DIRECTION_LEFT, - DIRECTION_RIGHT: DIRECTION_RIGHT, - DIRECTION_UP: DIRECTION_UP, - DIRECTION_DOWN: DIRECTION_DOWN, - DIRECTION_HORIZONTAL: DIRECTION_HORIZONTAL, - DIRECTION_VERTICAL: 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, - merge: merge, - extend: extend, - assign: assign, - inherit: inherit, - bindFn: bindFn, - prefixed: prefixed -}); - -window.Hammer = Hammer; - -export {Hammer}; +import {assign} from '../util/util'; + +/*! Hammer.JS - v2.0.6 - 2015-12-23 + * http://hammerjs.github.io/ + * + * Copyright (c) 2015 Jorik Tangelder; + * Licensed under the license */ + + +var VENDOR_PREFIXES = ['', 'webkit', 'Moz', 'MS', 'ms', 'o']; +var TEST_ELEMENT = document.createElement('div'); + +var TYPE_FUNCTION = 'function'; + +var round = Math.round; +var abs = Math.abs; +var now = Date.now; + +/** + * set a timeout with a given scope + * @param {Function} fn + * @param {Number} timeout + * @param {Object} context + * @returns {number} + */ +function setTimeoutContext(fn, timeout, context) { + return setTimeout(bindFn(fn, context), timeout); +} + +/** + * if the argument is an array, we want to execute the fn on each entry + * if it aint an array we don't want to do a thing. + * this is used by all the methods that accept a single and array argument. + * @param {*|Array} arg + * @param {String} fn + * @param {Object} [context] + * @returns {Boolean} + */ +function invokeArrayArg(arg, fn, context) { + if (Array.isArray(arg)) { + each(arg, context[fn], context); + return true; + } + return false; +} + +/** + * walk objects and arrays + * @param {Object} obj + * @param {Function} iterator + * @param {Object} context + */ +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); + } + } +} + +/** + * simple class inheritance + * @param {Function} child + * @param {Function} base + * @param {Object} [properties] + */ +function inherit(child, base, properties) { + var baseP = base.prototype, + childP; + + childP = child.prototype = Object.create(baseP); + childP.constructor = child; + childP._super = baseP; + + if (properties) { + assign(childP, properties); + } +} + +/** + * simple function bind + * @param {Function} fn + * @param {Object} context + * @returns {Function} + */ +function bindFn(fn, context) { + return function boundFn() { + return fn.apply(context, arguments); + }; +} + +/** + * let a boolean value also be a function that must return a boolean + * this first item in args will be used as the context + * @param {Boolean|Function} val + * @param {Array} [args] + * @returns {Boolean} + */ +function boolOrFn(val, args) { + if (typeof val == TYPE_FUNCTION) { + return val.apply(args ? args[0] || undefined : undefined, args); + } + return val; +} + +/** + * use the val2 when val1 is undefined + * @param {*} val1 + * @param {*} val2 + * @returns {*} + */ +function ifUndefined(val1, val2) { + return (val1 === undefined) ? val2 : val1; +} + +/** + * addEventListener with multiple events at once + * @param {EventTarget} target + * @param {String} types + * @param {Function} handler + */ +function addEventListeners(target, types, handler) { + each(splitStr(types), function(type) { + target.addEventListener(type, handler, false); + }); +} + +/** + * removeEventListener with multiple events at once + * @param {EventTarget} target + * @param {String} types + * @param {Function} handler + */ +function removeEventListeners(target, types, handler) { + each(splitStr(types), function(type) { + target.removeEventListener(type, handler, false); + }); +} + +/** + * find if a node is in the given parent + * @method hasParent + * @param {HTMLElement} node + * @param {HTMLElement} parent + * @return {Boolean} found + */ +function hasParent(node, parent) { + while (node) { + if (node == parent) { + return true; + } + node = node.parentNode; + } + return false; +} + +/** + * small indexOf wrapper + * @param {String} str + * @param {String} find + * @returns {Boolean} found + */ +function inStr(str, find) { + return str.indexOf(find) > -1; +} + +/** + * split string on whitespace + * @param {String} str + * @returns {Array} words + */ +function splitStr(str) { + return str.trim().split(/\s+/g); +} + +/** + * find if a array contains the object using indexOf or a simple polyFill + * @param {Array} src + * @param {String} find + * @param {String} [findByKey] + * @return {Boolean|Number} false when not found, or the index + */ +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; + } +} + +/** + * convert array-like objects to real arrays + * @param {Object} obj + * @returns {Array} + */ +function toArray(obj) { + return Array.prototype.slice.call(obj, 0); +} + +/** + * unique array with objects based on a key (like 'id') or just by the array's value + * @param {Array} src [{id:1},{id:2},{id:1}] + * @param {String} [key] + * @param {Boolean} [sort=False] + * @returns {Array} [{id:1},{id:2}] + */ +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]; + }); + } + } + + return results; +} + +/** + * get the prefixed property + * @param {Object} obj + * @param {String} property + * @returns {String|Undefined} prefixed + */ +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; +} + +/** + * get a unique id + * @returns {number} uniqueId + */ +var _uniqueId = 1; +function uniqueId() { + return _uniqueId++; +} + +/** + * get the window object of an element + * @param {HTMLElement} element + * @returns {DocumentView|Window} + */ +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; +var DIRECTION_LEFT = 2; +var DIRECTION_RIGHT = 4; +var DIRECTION_UP = 8; +var DIRECTION_DOWN = 16; + +var DIRECTION_HORIZONTAL = DIRECTION_LEFT | DIRECTION_RIGHT; +var DIRECTION_VERTICAL = DIRECTION_UP | DIRECTION_DOWN; +var DIRECTION_ALL = DIRECTION_HORIZONTAL | DIRECTION_VERTICAL; + +var PROPS_XY = ['x', 'y']; +var PROPS_CLIENT_XY = ['clientX', 'clientY']; + +/** + * create new input type manager + * @param {Manager} manager + * @param {Function} callback + * @returns {Input} + * @constructor + */ +function Input(manager, callback) { + var self = this; + this.manager = manager; + this.callback = callback; + this.element = manager.element; + this.target = manager.options.inputTarget; + + // smaller wrapper around the handler, for the scope and the enabled state of the manager, + // so when disabled the input events are completely bypassed. + this.domHandler = function(ev) { + if (boolOrFn(manager.options.enable, [manager])) { + self.handler(ev); + } + }; + + this.init(); + +} + +Input.prototype = { + /** + * should handle the inputEvent data and trigger the callback + * @virtual + */ + handler: function() { }, + + /** + * bind the events + */ + 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); + }, + + /** + * unbind the events + */ + 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); + } +}; + +/** + * create new input type manager + * called by the Manager constructor + * @param {Hammer} manager + * @returns {Input} + */ +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); +} + +/** + * handle input events + * @param {Manager} manager + * @param {String} eventType + * @param {Object} input + */ +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 = {}; + } + + // source event is the normalized value of the domEvents + // like 'touchstart, mouseup, pointerdown' + input.eventType = eventType; + + // compute scale, rotation etc + computeInputData(manager, input); + + // emit secret event + manager.emit('hammer.input', input); + + manager.recognize(input); + manager.session.prevInput = input; +} + +/** + * extend the data with some usable properties like scale, rotate, velocity etc + * @param {Object} manager + * @param {Object} input + */ +function computeInputData(manager, input) { + var session = manager.session; + var pointers = input.pointers; + var pointersLength = pointers.length; + + // store the first input to calculate the distance and direction + if (!session.firstInput) { + session.firstInput = simpleCloneInputData(input); + } + + // to compute scale and rotation we need to store the multiple touches + 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); + + // find the correct target + 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); +} + +/** + * velocity is calculated every x ms + * @param {Object} session + * @param {Object} input + */ +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 { + // use latest velocity info if it doesn't overtake a minimum period + velocity = last.velocity; + velocityX = last.velocityX; + velocityY = last.velocityY; + direction = last.direction; + } + + input.velocity = velocity; + input.velocityX = velocityX; + input.velocityY = velocityY; + input.direction = direction; +} + +/** + * create a simple clone from the input used for storage of firstInput and firstMultiple + * @param {Object} input + * @returns {Object} clonedInputData + */ +function simpleCloneInputData(input) { + // make a simple copy of the pointers because we will get a reference if we don't + // we only need clientXY for the calculations + 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 + }; +} + +/** + * get the center of all the pointers + * @param {Array} pointers + * @return {Object} center contains `x` and `y` properties + */ +function getCenter(pointers) { + var pointersLength = pointers.length; + + // no need to loop when only one touch + 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) + }; +} + +/** + * calculate the velocity between two points. unit is in px per ms. + * @param {Number} deltaTime + * @param {Number} x + * @param {Number} y + * @return {Object} velocity `x` and `y` + */ +function getVelocity(deltaTime, x, y) { + return { + x: x / deltaTime || 0, + y: y / deltaTime || 0 + }; +} + +/** + * get the direction between two points + * @param {Number} x + * @param {Number} y + * @return {Number} direction + */ +function getDirection(x, y) { + if (x === y) { + return DIRECTION_NONE; + } + + if (abs(x) >= abs(y)) { + return x < 0 ? DIRECTION_LEFT : DIRECTION_RIGHT; + } + return y < 0 ? DIRECTION_UP : DIRECTION_DOWN; +} + +/** + * calculate the absolute distance between two points + * @param {Object} p1 {x, y} + * @param {Object} p2 {x, y} + * @param {Array} [props] containing x and y keys + * @return {Number} distance + */ +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)); +} + +/** + * calculate the angle between two coordinates + * @param {Object} p1 + * @param {Object} p2 + * @param {Array} [props] containing x and y keys + * @return {Number} angle + */ +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; +} + +/** + * calculate the rotation degrees between two pointersets + * @param {Array} start array of pointers + * @param {Array} end array of pointers + * @return {Number} rotation + */ +function getRotation(start, end) { + return getAngle(end[1], end[0], PROPS_CLIENT_XY) + getAngle(start[1], start[0], PROPS_CLIENT_XY); +} + +/** + * calculate the scale factor between two pointersets + * no scale is 1, and goes down to 0 when pinched together, and bigger when pinched out + * @param {Array} start array of pointers + * @param {Array} end array of pointers + * @return {Number} scale + */ +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'; + +/** + * Mouse events input + * @constructor + * @extends Input + */ +function MouseInput() { + this.evEl = MOUSE_ELEMENT_EVENTS; + this.evWin = MOUSE_WINDOW_EVENTS; + + this.allow = true; // used by Input.TouchMouse to disable mouse events + this.pressed = false; // mousedown state + + Input.apply(this, arguments); +} + +inherit(MouseInput, Input, { + /** + * handle mouse events + * @param {Object} ev + */ + handler: function MEhandler(ev) { + var eventType = MOUSE_INPUT_MAP[ev.type]; + + // on start we want to have the left mouse button down + if (eventType & INPUT_START && ev.button === 0) { + this.pressed = true; + } + + if (eventType & INPUT_MOVE && ev.which !== 1) { + eventType = INPUT_END; + } + + // mouse must be down, and mouse events are allowed (see the TouchMouse input) + 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 +}; + +// in IE10 the pointer types is defined as an enum +var IE10_POINTER_TYPE_ENUM = { + 2: INPUT_TYPE_TOUCH, + 3: INPUT_TYPE_PEN, + 4: INPUT_TYPE_MOUSE, + 5: INPUT_TYPE_KINECT // see https://twitter.com/jacobrossi/status/480596438489890816 +}; + +var POINTER_ELEMENT_EVENTS = 'pointerdown'; +var POINTER_WINDOW_EVENTS = 'pointermove pointerup pointercancel'; + +// IE10 has prefixed support, and case-sensitive +if (window.MSPointerEvent && !window.PointerEvent) { + POINTER_ELEMENT_EVENTS = 'MSPointerDown'; + POINTER_WINDOW_EVENTS = 'MSPointerMove MSPointerUp MSPointerCancel'; +} + +/** + * Pointer events input + * @constructor + * @extends Input + */ +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, { + /** + * handle mouse events + * @param {Object} ev + */ + 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); + + // get index of the event in the store + var storeIndex = inArray(store, ev.pointerId, 'pointerId'); + + // start and mouse must be down + 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; + } + + // it not found, so the pointer hasn't been down (so it's probably a hover) + if (storeIndex < 0) { + return; + } + + // update the event in the store + store[storeIndex] = ev; + + this.callback(this.manager, eventType, { + pointers: store, + changedPointers: [ev], + pointerType: pointerType, + srcEvent: ev + }); + + if (removePointer) { + // remove from the store + 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'; + +/** + * Touch events input + * @constructor + * @extends Input + */ +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]; + + // should we handle the touch events? + if (type === INPUT_START) { + this.started = true; + } + + if (!this.started) { + return; + } + + var touches = normalizeSingleTouches.call(this, ev, type); + + // when done, reset the started state + 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 + }); + } +}); + +/** + * @this {TouchInput} + * @param {Object} ev + * @param {Number} type flag + * @returns {undefined|Array} [all, changed] + */ +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'; + +/** + * Multi-user touch events input + * @constructor + * @extends Input + */ +function TouchInput() { + 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 + }); + } +}); + +/** + * @this {TouchInput} + * @param {Object} ev + * @param {Number} type flag + * @returns {undefined|Array} [all, changed] + */ +function getTouches(ev, type) { + var allTouches = toArray(ev.touches); + var targetIds = this.targetIds; + + // when there is only one touch, the process can be simplified + 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; + + // get target touches from touches + targetTouches = allTouches.filter(function(touch) { + return hasParent(touch.target, target); + }); + + // collect touches + if (type === INPUT_START) { + i = 0; + while (i < targetTouches.length) { + targetIds[targetTouches[i].identifier] = true; + i++; + } + } + + // filter changed touches to only contain touches that exist in the collected target ids + i = 0; + while (i < changedTouches.length) { + if (targetIds[changedTouches[i].identifier]) { + changedTargetTouches.push(changedTouches[i]); + } + + // cleanup removed touches + if (type & (INPUT_END | INPUT_CANCEL)) { + delete targetIds[changedTouches[i].identifier]; + } + i++; + } + + if (!changedTargetTouches.length) { + return; + } + + return [ + // merge targetTouches with changedTargetTouches so it contains ALL touches, including 'end' and 'cancel' + uniqueArray(targetTouches.concat(changedTargetTouches), 'identifier', true), + changedTargetTouches + ]; +} + +/** + * Combined touch and mouse input + * + * Touch has a higher priority then mouse, and while touching no mouse events are allowed. + * This because touch devices also emit mouse events while doing a touch. + * + * @constructor + * @extends Input + */ +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, { + /** + * handle mouse and touch events + * @param {Hammer} manager + * @param {String} inputEvent + * @param {Object} inputData + */ + handler: function TMEhandler(manager, inputEvent, inputData) { + var isTouch = (inputData.pointerType == INPUT_TYPE_TOUCH), + isMouse = (inputData.pointerType == INPUT_TYPE_MOUSE); + + // when we're in a touch event, so block all upcoming mouse events + // most mobile browser also emit mouseevents, right after touchstart + if (isTouch) { + this.mouse.allow = false; + } else if (isMouse && !this.mouse.allow) { + return; + } + + // reset the allowMouse when we're done + if (inputEvent & (INPUT_END | INPUT_CANCEL)) { + this.mouse.allow = true; + } + + this.callback(manager, inputEvent, inputData); + }, + + /** + * remove the event listeners + */ + 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; + +// magical touchAction value +var TOUCH_ACTION_COMPUTE = 'compute'; +var TOUCH_ACTION_AUTO = 'auto'; +var TOUCH_ACTION_MANIPULATION = 'manipulation'; // not implemented +var TOUCH_ACTION_NONE = 'none'; +var TOUCH_ACTION_PAN_X = 'pan-x'; +var TOUCH_ACTION_PAN_Y = 'pan-y'; + +/** + * Touch Action + * sets the touchAction property or uses the js alternative + * @param {Manager} manager + * @param {String} value + * @constructor + */ +function TouchAction(manager, value) { + this.manager = manager; + this.set(value); +} + +TouchAction.prototype = { + /** + * set the touchAction value on the element or enable the polyfill + * @param {String} value + */ + set: function(value) { + // find out the touch-action by the event handlers + 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(); + }, + + /** + * just re-set the touchAction value + */ + update: function() { + this.set(this.manager.options.touchAction); + }, + + /** + * compute the value for the touchAction property based on the recognizer's settings + * @returns {String} value + */ + 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(' ')); + }, + + /** + * this method is called on each input cycle and provides the preventing of the browser behavior + * @param {Object} input + */ + preventDefaults: function(input) { + // not needed with native support for the touchAction property + if (NATIVE_TOUCH_ACTION) { + return; + } + + var srcEvent = input.srcEvent; + var direction = input.offsetDirection; + + // if the touch action did prevented once this session + 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) { + //do not prevent defaults if this is a tap gesture + + var isTapPointer = input.pointers.length === 1; + var isTapMovement = input.distance < 2; + var isTapTouchTime = input.deltaTime < 250; + + if (isTapPointer && isTapMovement && isTapTouchTime) { + return; + } + } + + if (hasPanX && hasPanY) { + // `pan-x pan-y` means browser handles all scrolling/panning, do not prevent + return; + } + + if (hasNone || + (hasPanY && direction & DIRECTION_HORIZONTAL) || + (hasPanX && direction & DIRECTION_VERTICAL)) { + return this.preventSrc(srcEvent); + } + }, + + /** + * call preventDefault to prevent the browser's default behavior (scrolling in most cases) + * @param {Object} srcEvent + */ + preventSrc: function(srcEvent) { + this.manager.session.prevented = true; + srcEvent.preventDefault(); + } +}; + +/** + * when the touchActions are collected they are not a valid value, so we need to clean things up. * + * @param {String} actions + * @returns {*} + */ +function cleanTouchActions(actions) { + // none + 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 both pan-x and pan-y are set (different recognizers + // for different directions, e.g. horizontal pan but vertical swipe?) + // we need none (as otherwise with pan-x pan-y combined none of these + // recognizers will work, since the browser would handle all panning + if (hasPanX && hasPanY) { + return TOUCH_ACTION_NONE; + } + + // pan-x OR pan-y + if (hasPanX || hasPanY) { + return hasPanX ? TOUCH_ACTION_PAN_X : TOUCH_ACTION_PAN_Y; + } + + // manipulation + if (inStr(actions, TOUCH_ACTION_MANIPULATION)) { + return TOUCH_ACTION_MANIPULATION; + } + + return TOUCH_ACTION_AUTO; +} + +/** + * Recognizer flow explained; * + * All recognizers have the initial state of POSSIBLE when a input session starts. + * The definition of a input session is from the first input until the last input, with all it's movement in it. * + * Example session for mouse-input: mousedown -> mousemove -> mouseup + * + * On each recognizing cycle (see Manager.recognize) the .recognize() method is executed + * which determines with state it should be. + * + * If the recognizer has the state FAILED, CANCELLED or RECOGNIZED (equals ENDED), it is reset to + * POSSIBLE to give it another change on the next cycle. + * + * Possible + * | + * +-----+---------------+ + * | | + * +-----+-----+ | + * | | | + * Failed Cancelled | + * +-------+------+ + * | | + * Recognized Began + * | + * Changed + * | + * Ended/Recognized + */ +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; + +/** + * Recognizer + * Every recognizer needs to extend from this class. + * @constructor + * @param {Object} options + */ +function Recognizer(options) { + this.options = assign({}, this.defaults, options || {}); + + this.id = uniqueId(); + + this.manager = null; + + // default is enable true + this.options.enable = ifUndefined(this.options.enable, true); + + this.state = STATE_POSSIBLE; + + this.simultaneous = {}; + this.requireFail = []; +} + +Recognizer.prototype = { + /** + * @virtual + * @type {Object} + */ + defaults: {}, + + /** + * set options + * @param {Object} options + * @return {Recognizer} + */ + set: function(options) { + assign(this.options, options); + + // also update the touchAction, in case something changed about the directions/enabled state + this.manager && this.manager.touchAction.update(); + return this; + }, + + /** + * recognize simultaneous with an other recognizer. + * @param {Recognizer} otherRecognizer + * @returns {Recognizer} 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; + }, + + /** + * drop the simultaneous link. it doesnt remove the link on the other recognizer. + * @param {Recognizer} otherRecognizer + * @returns {Recognizer} this + */ + dropRecognizeWith: function(otherRecognizer) { + if (invokeArrayArg(otherRecognizer, 'dropRecognizeWith', this)) { + return this; + } + + otherRecognizer = getRecognizerByNameIfManager(otherRecognizer, this); + delete this.simultaneous[otherRecognizer.id]; + return this; + }, + + /** + * recognizer can only run when an other is failing + * @param {Recognizer} otherRecognizer + * @returns {Recognizer} 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; + }, + + /** + * drop the requireFailure link. it does not remove the link on the other recognizer. + * @param {Recognizer} otherRecognizer + * @returns {Recognizer} 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; + }, + + /** + * has require failures boolean + * @returns {boolean} + */ + hasRequireFailures: function() { + return this.requireFail.length > 0; + }, + + /** + * if the recognizer can recognize simultaneous with an other recognizer + * @param {Recognizer} otherRecognizer + * @returns {Boolean} + */ + canRecognizeWith: function(otherRecognizer) { + return !!this.simultaneous[otherRecognizer.id]; + }, + + /** + * You should use `tryEmit` instead of `emit` directly to check + * that all the needed recognizers has failed before emitting. + * @param {Object} input + */ + emit: function(input) { + var self = this; + var state = this.state; + + function emit(event) { + self.manager.emit(event, input); + } + + // 'panstart' and 'panmove' + if (state < STATE_ENDED) { + emit(self.options.event + stateStr(state)); + } + + emit(self.options.event); // simple 'eventName' events + + if (input.additionalEvent) { // additional event(panleft, panright, pinchin, pinchout...) + emit(input.additionalEvent); + } + + // panend and pancancel + if (state >= STATE_ENDED) { + emit(self.options.event + stateStr(state)); + } + }, + + /** + * Check that all the require failure recognizers has failed, + * if true, it emits a gesture event, + * otherwise, setup the state to FAILED. + * @param {Object} input + */ + tryEmit: function(input) { + if (this.canEmit()) { + return this.emit(input); + } + // it's failing anyway + this.state = STATE_FAILED; + }, + + /** + * can we emit? + * @returns {boolean} + */ + canEmit: function() { + var i = 0; + while (i < this.requireFail.length) { + if (!(this.requireFail[i].state & (STATE_FAILED | STATE_POSSIBLE))) { + return false; + } + i++; + } + return true; + }, + + /** + * update the recognizer + * @param {Object} inputData + */ + recognize: function(inputData) { + // make a new copy of the inputData + // so we can change the inputData without messing up the other recognizers + var inputDataClone = assign({}, inputData); + + // is is enabled and allow recognizing? + if (!boolOrFn(this.options.enable, [this, inputDataClone])) { + this.reset(); + this.state = STATE_FAILED; + return; + } + + // reset when we've reached the end + if (this.state & (STATE_RECOGNIZED | STATE_CANCELLED | STATE_FAILED)) { + this.state = STATE_POSSIBLE; + } + + this.state = this.process(inputDataClone); + + // the recognizer has recognized a gesture + // so trigger an event + if (this.state & (STATE_BEGAN | STATE_CHANGED | STATE_ENDED | STATE_CANCELLED)) { + this.tryEmit(inputDataClone); + } + }, + + /** + * return the state of the recognizer + * the actual recognizing happens in this method + * @virtual + * @param {Object} inputData + * @returns {Const} STATE + */ + process: function(inputData) { }, // jshint ignore:line + + /** + * return the preferred touch-action + * @virtual + * @returns {Array} + */ + getTouchAction: function() { }, + + /** + * called when the gesture isn't allowed to recognize + * like when another is being recognized or it is disabled + * @virtual + */ + reset: function() { } +}; + +/** + * get a usable string, used as event postfix + * @param {Const} state + * @returns {String} state + */ +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 ''; +} + +/** + * direction cons to string + * @param {Const} direction + * @returns {String} + */ +function directionStr(direction) { + if (direction == DIRECTION_DOWN) { + return 'down'; + } else if (direction == DIRECTION_UP) { + return 'up'; + } else if (direction == DIRECTION_LEFT) { + return 'left'; + } else if (direction == DIRECTION_RIGHT) { + return 'right'; + } + return ''; +} + +/** + * get a recognizer by name if it is bound to a manager + * @param {Recognizer|String} otherRecognizer + * @param {Recognizer} recognizer + * @returns {Recognizer} + */ +function getRecognizerByNameIfManager(otherRecognizer, recognizer) { + var manager = recognizer.manager; + if (manager) { + return manager.get(otherRecognizer); + } + return otherRecognizer; +} + +/** + * This recognizer is just used as a base for the simple attribute recognizers. + * @constructor + * @extends Recognizer + */ +function AttrRecognizer() { + Recognizer.apply(this, arguments); +} + +inherit(AttrRecognizer, Recognizer, { + /** + * @namespace + * @memberof AttrRecognizer + */ + defaults: { + /** + * @type {Number} + * @default 1 + */ + pointers: 1 + }, + + /** + * Used to check if it the recognizer receives valid input, like input.distance > 10. + * @memberof AttrRecognizer + * @param {Object} input + * @returns {Boolean} recognized + */ + attrTest: function(input) { + var optionPointers = this.options.pointers; + return optionPointers === 0 || input.pointers.length === optionPointers; + }, + + /** + * Process the input and return the state for the recognizer + * @memberof AttrRecognizer + * @param {Object} input + * @returns {*} State + */ + process: function(input) { + var state = this.state; + var eventType = input.eventType; + + var isRecognized = state & (STATE_BEGAN | STATE_CHANGED); + var isValid = this.attrTest(input); + + // on cancel input and we've recognized before, return STATE_CANCELLED + 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; + } +}); + +/** + * Pan + * Recognized when the pointer is down and moved in the allowed direction. + * @constructor + * @extends AttrRecognizer + */ +function PanRecognizer() { + AttrRecognizer.apply(this, arguments); + + this.pX = null; + this.pY = null; +} + +inherit(PanRecognizer, AttrRecognizer, { + /** + * @namespace + * @memberof PanRecognizer + */ + defaults: { + event: 'pan', + threshold: 10, + pointers: 1, + direction: DIRECTION_ALL + }, + + getTouchAction: function() { + var direction = this.options.direction; + var actions = []; + if (direction & DIRECTION_HORIZONTAL) { + actions.push(TOUCH_ACTION_PAN_Y); + } + if (direction & 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; + + // lock to axis? + if (!(direction & options.direction)) { + if (options.direction & DIRECTION_HORIZONTAL) { + direction = (x === 0) ? DIRECTION_NONE : (x < 0) ? DIRECTION_LEFT : 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); + } +}); + +/** + * Pinch + * Recognized when two or more pointers are moving toward (zoom-in) or away from each other (zoom-out). + * @constructor + * @extends AttrRecognizer + */ +function PinchRecognizer() { + AttrRecognizer.apply(this, arguments); +} + +inherit(PinchRecognizer, AttrRecognizer, { + /** + * @namespace + * @memberof PinchRecognizer + */ + 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); + } +}); + +/** + * Press + * Recognized when the pointer is down for x ms without any movement. + * @constructor + * @extends Recognizer + */ +function PressRecognizer() { + Recognizer.apply(this, arguments); + + this._timer = null; + this._input = null; +} + +inherit(PressRecognizer, Recognizer, { + /** + * @namespace + * @memberof PressRecognizer + */ + defaults: { + event: 'press', + pointers: 1, + time: 251, // minimal time of the pointer to be pressed + threshold: 9 // a minimal movement is ok, but keep it low + }, + + 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; + + // we only allow little movement + // and we've reached an end event, so a tap is possible + 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); + } + } +}); + +/** + * Rotate + * Recognized when two or more pointer are moving in a circular motion. + * @constructor + * @extends AttrRecognizer + */ +function RotateRecognizer() { + AttrRecognizer.apply(this, arguments); +} + +inherit(RotateRecognizer, AttrRecognizer, { + /** + * @namespace + * @memberof RotateRecognizer + */ + 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); + } +}); + +/** + * Swipe + * Recognized when the pointer is moving fast (velocity), with enough distance in the allowed direction. + * @constructor + * @extends AttrRecognizer + */ +function SwipeRecognizer() { + AttrRecognizer.apply(this, arguments); +} + +inherit(SwipeRecognizer, AttrRecognizer, { + /** + * @namespace + * @memberof SwipeRecognizer + */ + defaults: { + event: 'swipe', + threshold: 10, + velocity: 0.3, + direction: DIRECTION_HORIZONTAL | DIRECTION_VERTICAL, + pointers: 1 + }, + + getTouchAction: function() { + return PanRecognizer.prototype.getTouchAction.call(this); + }, + + attrTest: function(input) { + var direction = this.options.direction; + var velocity; + + if (direction & (DIRECTION_HORIZONTAL | DIRECTION_VERTICAL)) { + velocity = input.overallVelocity; + } else if (direction & DIRECTION_HORIZONTAL) { + velocity = input.overallVelocityX; + } else if (direction & 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); + } +}); + +/** + * A tap is ecognized when the pointer is doing a small tap/click. Multiple taps are recognized if they occur + * between the given interval and position. The delay option can be used to recognize multi-taps without firing + * a single tap. + * + * The eventData from the emitted event contains the property `tapCount`, which contains the amount of + * multi-taps being recognized. + * @constructor + * @extends Recognizer + */ +function TapRecognizer() { + Recognizer.apply(this, arguments); + + // previous time and center, + // used for tap counting + this.pTime = false; + this.pCenter = false; + + this._timer = null; + this._input = null; + this.count = 0; +} + +inherit(TapRecognizer, Recognizer, { + /** + * @namespace + * @memberof PinchRecognizer + */ + defaults: { + event: 'tap', + pointers: 1, + taps: 1, + interval: 300, // max time between the multi-tap taps + time: 250, // max time of the pointer to be down (like finger on the screen) + threshold: 9, // a minimal movement is ok, but keep it low + posThreshold: 10 // a multi-tap can be a bit off the initial position + }, + + 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(); + } + + // we only allow little movement + // and we've reached an end event, so a tap is possible + 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; + + // if tap count matches we have recognized it, + // else it has began recognizing... + var tapCount = this.count % options.taps; + if (tapCount === 0) { + // no failing requirements, immediately trigger the tap event + // or wait as long as the multitap interval to trigger + 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); + } + } +}); + +/** + * Simple way to create a manager with a default set of recognizers. + * @param {HTMLElement} element + * @param {Object} [options] + * @constructor + */ +function Hammer(element, options) { + options = options || {}; + options.recognizers = ifUndefined(options.recognizers, Hammer.defaults.preset); + return new Manager(element, options); +} + +/** + * @const {string} + */ +Hammer.VERSION = '2.0.6'; + +/** + * default settings + * @namespace + */ +Hammer.defaults = { + /** + * set if DOM events are being triggered. + * But this is slower and unused by simple implementations, so disabled by default. + * @type {Boolean} + * @default false + */ + domEvents: false, + + /** + * The value for the touchAction property/fallback. + * When set to `compute` it will magically set the correct value based on the added recognizers. + * @type {String} + * @default compute + */ + touchAction: TOUCH_ACTION_COMPUTE, + + /** + * @type {Boolean} + * @default true + */ + enable: true, + + /** + * EXPERIMENTAL FEATURE -- can be removed/changed + * Change the parent input target element. + * If Null, then it is being set the to main element. + * @type {Null|EventTarget} + * @default null + */ + inputTarget: null, + + /** + * force an input class + * @type {Null|Function} + * @default null + */ + inputClass: null, + + /** + * Default recognizer setup when calling `Hammer()` + * When creating a new Manager these will be skipped. + * @type {Array} + */ + preset: [ + // RecognizerClass, options, [recognizeWith, ...], [requireFailure, ...] + [RotateRecognizer, {enable: false}], + [PinchRecognizer, {enable: false}, ['rotate']], + [SwipeRecognizer, {direction: DIRECTION_HORIZONTAL}], + [PanRecognizer, {direction: DIRECTION_HORIZONTAL}, ['swipe']], + [TapRecognizer], + [TapRecognizer, {event: 'doubletap', taps: 2}, ['tap']], + [PressRecognizer] + ], + + /** + * Some CSS properties can be used to improve the working of Hammer. + * Add them to this method and they will be set when creating a new Manager. + * @namespace + */ + cssProps: { + /** + * Disables text selection to improve the dragging gesture. Mainly for desktop browsers. + * @type {String} + * @default 'none' + */ + userSelect: 'none', + + /** + * Disable the Windows Phone grippers when pressing an element. + * @type {String} + * @default 'none' + */ + touchSelect: 'none', + + /** + * Disables the default callout shown when you touch and hold a touch target. + * On iOS, when you touch and hold a touch target such as a link, Safari displays + * a callout containing information about the link. This property allows you to disable that callout. + * @type {String} + * @default 'none' + */ + touchCallout: 'none', + + /** + * Specifies whether zooming is enabled. Used by IE10> + * @type {String} + * @default 'none' + */ + contentZooming: 'none', + + /** + * Specifies that an entire element should be draggable instead of its contents. Mainly for desktop browsers. + * @type {String} + * @default 'none' + */ + userDrag: 'none', + + /** + * Overrides the highlight color shown when the user taps a link or a JavaScript + * clickable element in iOS. This property obeys the alpha value, if specified. + * @type {String} + * @default 'rgba(0,0,0,0)' + */ + tapHighlightColor: 'rgba(0,0,0,0)' + } +}; + +var STOP = 1; +var FORCED_STOP = 2; + +/** + * Manager + * @param {HTMLElement} element + * @param {Object} [options] + * @constructor + */ +function Manager(element, options) { + this.options = assign({}, Hammer.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 options + * @param {Object} options + * @returns {Manager} + */ + set: function(options) { + assign(this.options, options); + + // Options that need a little more setup + if (options.touchAction) { + this.touchAction.update(); + } + if (options.inputTarget) { + // Clean up existing event listeners and reinitialize + this.input.destroy(); + this.input.target = options.inputTarget; + this.input.init(); + } + return this; + }, + + /** + * stop recognizing for this session. + * This session will be discarded, when a new [input]start event is fired. + * When forced, the recognizer cycle is stopped immediately. + * @param {Boolean} [force] + */ + stop: function(force) { + this.session.stopped = force ? FORCED_STOP : STOP; + }, + + /** + * run the recognizers! + * called by the inputHandler function on every movement of the pointers (touches) + * it walks through all the recognizers and tries to detect the gesture that is being made + * @param {Object} inputData + */ + recognize: function(inputData) { + var session = this.session; + if (session.stopped) { + return; + } + + // run the touch-action polyfill + this.touchAction.preventDefaults(inputData); + + var recognizer; + var recognizers = this.recognizers; + + // this holds the recognizer that is being recognized. + // so the recognizer's state needs to be BEGAN, CHANGED, ENDED or RECOGNIZED + // if no recognizer is detecting a thing, it is set to `null` + var curRecognizer = session.curRecognizer; + + // reset when the last recognizer is recognized + // or when we're in a new session + if (!curRecognizer || (curRecognizer && curRecognizer.state & STATE_RECOGNIZED)) { + curRecognizer = session.curRecognizer = null; + } + + var i = 0; + while (i < recognizers.length) { + recognizer = recognizers[i]; + + // find out if we are allowed try to recognize the input for this one. + // 1. allow if the session is NOT forced stopped (see the .stop() method) + // 2. allow if we still haven't recognized a gesture in this session, or the this recognizer is the one + // that is being recognized. + // 3. allow if the recognizer is allowed to run simultaneous with the current recognized recognizer. + // this can be setup with the `recognizeWith()` method on the recognizer. + if (session.stopped !== FORCED_STOP && ( // 1 + !curRecognizer || recognizer == curRecognizer || // 2 + recognizer.canRecognizeWith(curRecognizer))) { // 3 + recognizer.recognize(inputData); + } else { + recognizer.reset(); + } + + // if the recognizer has been recognizing the input as a valid gesture, we want to store this one as the + // current active recognizer. but only if we don't already have an active recognizer + if (!curRecognizer && recognizer.state & (STATE_BEGAN | STATE_CHANGED | STATE_ENDED)) { + curRecognizer = session.curRecognizer = recognizer; + } + i++; + } + }, + + /** + * get a recognizer by its event name. + * @param {Recognizer|String} recognizer + * @returns {Recognizer|Null} + */ + 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 a recognizer to the manager + * existing recognizers with the same event name will be removed + * @param {Recognizer} recognizer + * @returns {Recognizer|Manager} + */ + add: function(recognizer) { + if (invokeArrayArg(recognizer, 'add', this)) { + return this; + } + + // remove existing + 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 a recognizer by name or instance + * @param {Recognizer|String} recognizer + * @returns {Manager} + */ + remove: function(recognizer) { + if (invokeArrayArg(recognizer, 'remove', this)) { + return this; + } + + recognizer = this.get(recognizer); + + // let's make sure this recognizer exists + if (recognizer) { + var recognizers = this.recognizers; + var index = inArray(recognizers, recognizer); + + if (index !== -1) { + recognizers.splice(index, 1); + this.touchAction.update(); + } + } + + return this; + }, + + /** + * bind event + * @param {String} events + * @param {Function} handler + * @returns {EventEmitter} this + */ + on: function(events, handler) { + var handlers = this.handlers; + each(splitStr(events), function(event) { + handlers[event] = handlers[event] || []; + handlers[event].push(handler); + }); + return this; + }, + + /** + * unbind event, leave emit blank to remove all handlers + * @param {String} events + * @param {Function} [handler] + * @returns {EventEmitter} 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 event to the listeners + * @param {String} event + * @param {Object} data + */ + emit: function(event, data) { + // we also want to trigger dom events + if (this.options.domEvents) { + triggerDomEvent(event, data); + } + + // no handlers, so skip it all + 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 the manager and unbinds all events + * it doesn't unbind dom events, that is the user own responsibility + */ + destroy: function() { + this.element && toggleCssProps(this, false); + + this.handlers = {}; + this.session = {}; + this.input.destroy(); + this.element = null; + } +}; + +/** + * add/remove the css properties as defined in manager.options.cssProps + * @param {Manager} manager + * @param {Boolean} add + */ +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 : ''; + }); +} + +/** + * trigger dom event + * @param {String} event + * @param {Object} data + */ +function triggerDomEvent(event, data) { + var gestureEvent = document.createEvent('Event'); + gestureEvent.initEvent(event, true, true); + gestureEvent.gesture = data; + data.target.dispatchEvent(gestureEvent); +} + +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: DIRECTION_LEFT, + DIRECTION_RIGHT: DIRECTION_RIGHT, + DIRECTION_UP: DIRECTION_UP, + DIRECTION_DOWN: DIRECTION_DOWN, + DIRECTION_HORIZONTAL: DIRECTION_HORIZONTAL, + DIRECTION_VERTICAL: 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 +}); + +window.Hammer = Hammer; + +export {Hammer}; diff --git a/ionic/platform/platform.ts b/ionic/platform/platform.ts index c6918ad173..ba3d69282f 100644 --- a/ionic/platform/platform.ts +++ b/ionic/platform/platform.ts @@ -1,4 +1,4 @@ -import {getQuerystring, extend} from '../util/util'; +import {getQuerystring, assign} from '../util/util'; import {ready, windowDimensions, flushDimensionCache} from '../util/dom'; @@ -513,8 +513,8 @@ export class Platform { // add the engine to the first in the platform hierarchy // the original rootPlatformNode now becomes a child // of the engineNode, which is not the new root - engineNode.child(rootPlatformNode); - rootPlatformNode.parent(engineNode); + engineNode.child = rootPlatformNode; + rootPlatformNode.parent = engineNode; rootPlatformNode = engineNode; // add any events which the engine would provide @@ -522,21 +522,21 @@ export class Platform { let engineMethods = engineNode.methods(); engineMethods._engineReady = engineMethods.ready; delete engineMethods.ready; - extend(this, engineMethods); + assign(this, engineMethods); } let platformNode = rootPlatformNode; while (platformNode) { insertSuperset(platformNode); - platformNode = platformNode.child(); + platformNode = platformNode.child; } // make sure the root noot is actually the root // incase a node was inserted before the root - platformNode = rootPlatformNode.parent(); + platformNode = rootPlatformNode.parent; while (platformNode) { rootPlatformNode = platformNode; - platformNode = platformNode.parent(); + platformNode = platformNode.parent; } platformNode = rootPlatformNode; @@ -549,7 +549,7 @@ export class Platform { this._versions[platformNode.name()] = platformNode.version(this); // go to the next platform child - platformNode = platformNode.child(); + platformNode = platformNode.child; } } @@ -566,14 +566,14 @@ export class Platform { // use it's getRoot method to build up its hierarchy // depending on which platforms match let platformNode = new PlatformNode(platformName); - let rootNode = platformNode.getRoot(this, 0); + let rootNode = platformNode.getRoot(this); if (rootNode) { rootNode.depth = 0; - let childPlatform = rootNode.child(); + let childPlatform = rootNode.child; while (childPlatform) { rootNode.depth++; - childPlatform = childPlatform.child(); + childPlatform = childPlatform.child; } } return rootNode; @@ -587,20 +587,20 @@ function insertSuperset(platformNode) { // add a platform in between two exist platforms // so we can build the correct hierarchy of active platforms let supersetPlatform = new PlatformNode(supersetPlaformName); - supersetPlatform.parent(platformNode.parent()); - supersetPlatform.child(platformNode); - if (supersetPlatform.parent()) { - supersetPlatform.parent().child(supersetPlatform); + supersetPlatform.parent = platformNode.parent; + supersetPlatform.child = platformNode; + if (supersetPlatform.parent) { + supersetPlatform.parent.child = supersetPlatform; } - platformNode.parent(supersetPlatform); + platformNode.parent = supersetPlatform; } } class PlatformNode { private c: any; - private _parent: PlatformNode; - private _child: PlatformNode; + public parent: PlatformNode; + public child: PlatformNode; public isEngine: boolean; constructor(platformName) { @@ -624,20 +624,6 @@ class PlatformNode { return this.c.methods || {}; } - parent(val) { - if (arguments.length) { - this._parent = val; - } - return this._parent; - } - - child(val) { - if (arguments.length) { - this._child = val; - } - return this._child; - } - isMatch(p): boolean { if (p.platformOverride && !this.isEngine) { return (p.platformOverride === this.c.name); @@ -678,11 +664,11 @@ class PlatformNode { for (let i = 0; i < parents.length; i++) { platform = new PlatformNode(parents[i]); - platform.child(this); + platform.child = this; rootPlatform = platform.getRoot(p); if (rootPlatform) { - this.parent(platform); + this.parent = platform; return rootPlatform; } } diff --git a/ionic/platform/storage/sql.ts b/ionic/platform/storage/sql.ts index e52c91e0e7..b5a82c13e2 100644 --- a/ionic/platform/storage/sql.ts +++ b/ionic/platform/storage/sql.ts @@ -1,6 +1,6 @@ import {StorageEngine} from './storage'; -import {defaults, extend} from '../../util'; +import {defaults, assign} from '../../util/util'; const DB_NAME :string = '__ionicstorage'; const win :any = window; @@ -54,7 +54,7 @@ export class SqlStorage extends StorageEngine { if (win.sqlitePlugin) { let location = this._getBackupLocation(dbOptions.backupFlag); - this._db = win.sqlitePlugin.openDatabase(extend({ + this._db = win.sqlitePlugin.openDatabase(assign({ name: dbOptions.name, location: location, createFromLocation: dbOptions.existingDatabase ? 1 : 0 diff --git a/ionic/util/test/util.spec.ts b/ionic/util/test/util.spec.ts index 52e0036ea0..c2a8d5a837 100644 --- a/ionic/util/test/util.spec.ts +++ b/ionic/util/test/util.spec.ts @@ -5,23 +5,10 @@ export function run() { it('should extend simple', () => { var obj = { a: '0', c: '0' }; - expect( util.extend(obj, { a: '1', b: '2' }) ).toBe(obj); + expect( util.assign(obj, { a: '1', b: '2' }) ).toBe(obj); expect(obj).toEqual({ a: '1', b: '2', c: '0' }); }); - it('should extend complex', () => { - expect(util.extend( - { a: '0', b: '0' }, - { b: '1', c: '1' }, - { c: '2', d: '2' } - )).toEqual({ - a: '0', - b: '1', - c: '2', - d: '2' - }); - }); - }); describe('defaults', function() { @@ -29,7 +16,7 @@ export function run() { it('should simple defaults', () => { var obj = { a: '1' }; expect(util.defaults(obj, { a: '2', b: '2' })).toBe(obj); - expect(obj).toEqual({ + expect(obj).toEqual({ a: '1', b: '2' }); }); diff --git a/ionic/util/util.ts b/ionic/util/util.ts index 86f6469f28..978a7b7e01 100644 --- a/ionic/util/util.ts +++ b/ionic/util/util.ts @@ -12,13 +12,26 @@ export function clamp(min, n, max) { return Math.max(min, Math.min(n, max)); } +// polyfill for Object.assign +var _assign: any; +if (typeof Object.assign !== 'function') { + // use the old-school shallow extend method + _assign = _baseExtend; +} else { + // use the built in ES6 Object.assign method + _assign = Object.assign; +} + /** - * Extend the destination with an arbitrary number of other objects. - * @param dst the destination - * @param ... the param objects + * The assign() method is used to copy the values of all enumerable own + * properties from one or more source objects to a target object. It will + * return the target object. When available, this method will use + * `Object.assign()` under-the-hood. + * @param target The target object + * @param source The source object */ -export function extend(dst: any, ...args: any[]) { - return _baseExtend(dst, [].slice.call(arguments, 1), false); +export function assign(target: any, source: any): any { + return _assign(target, source); } /** @@ -30,7 +43,7 @@ export function merge(dst: any, ...args: any[]) { return _baseExtend(dst, [].slice.call(arguments, 1), true); } -function _baseExtend(dst, objs, deep) { +function _baseExtend(dst, objs, deep = false) { for (var i = 0, ii = objs.length; i < ii; ++i) { var obj = objs[i]; if (!obj || !isObject(obj) && !isFunction(obj)) continue;