Team:CityU HK/Design
Students
Instructors
Advisors
|
Oscar Ying Hi!I am a fresh graduate from City University of Hong Kong Applied Biology program. Currently as a research assistant in Dr Richard Kong’s lab. My duty is to ensure the iGEMers can get all the necessities for their experiments and to give technical support when they encounter difficulty. It is awesome to work with all the iGEMers and I really enjoy every minute with the team. I hope my limited experience in biology research can help the team and make things a little bit easier. |
|
Marco So I am a year 3 student majoring in Applied Biology. Participating in this competition realizes my dream of putting knowledge acquired in lessons into practical uses.I think my strengths include giving ideas, presenting in front of a crowd and keeping my team happy. I love my teammates. CityU iGEM 2014 would not be possible without any of them. Lastly, in my philosophy, the world is beautiful, and the people are gorgeous. Why not live with and enjoy both the good and bad? |
|
|
Maria Li Ciao a tutti! I’m Maria. I love to explore innovative stuff and to apply science concepts to improve human lives. This is the first time I get in touch with synthetic biology and I find it a very fascinating field to explore. In the iGEM project, I help my team to build the wiki and construct a gene cluster of fadD and fadL. I am also the presenter in our team. My life isn’t all about science, I’m passionate about music (blues, rock, rap…), website design, water sports (surfing!!!) and travel. |
|
Venus Wong
Hi! |
|
|
Ivan Yau
Hi! |
|
Vivian Lin Natural history aficionado, freelance artist/writer, fresh graduate from the City University Applied Biology program and currently working as a research assistant. I help conduct the longitudinal study on the Discovery-enriched Curriculum currently being implemented in the university. I took part in proofreading and editing of the CityU iGEM Wiki. |
|
/****************************
custom js
- /
jQuery(function($) {
// Mobile sidebars
$.fn.expandableSidebar = function(expandedClass) {
var $me = this;
$me.on('click', function() {
if(!$me.hasClass(expandedClass)) {
$me.addClass(expandedClass);
} else {
$me.removeClass(expandedClass);
}
});
}
// Interval loop
$.fn.intervalLoop = function(condition, action, duration, limit) {
var counter = 0;
var looper = setInterval(function(){
if (counter >= limit || $.fn.checkIfElementExists(condition)) {
clearInterval(looper);
} else {
action();
counter++;
}
}, duration);
}
// Check if element exists
$.fn.checkIfElementExists = function(selector) {
return $(selector).length;
}
var parisController = {
init: function(opts) {
var base = this;
// Add classes to elements
base._addClasses();
setTimeout(function(){
base._checkCartItems();
base._attachEvents();
}, 1000);
},
_addClasses: function() {
var base = this;
// Add fade in class to nav + logo
$('.landing-page').addClass('fade-in');
// Add class to nav items with subnav
$('.wsite-menu-default').find('li.wsite-menu-item-wrap').each(function(){
var $me = $(this);
if($me.children('.wsite-menu-wrap').length > 0) {
$me.addClass('has-submenu');
$('').insertAfter($me.children('a.wsite-menu-item'));
}
});
// ADd class to subnav items with subnav
$('.wsite-menu').find('li.wsite-menu-subitem-wrap').each(function(){
var $me = $(this);
if($me.children('.wsite-menu-wrap').length > 0) {
$me.addClass('has-submenu');
$('').insertAfter($me.children('a.wsite-menu-subitem'));
}
});
// Keep subnav open if submenu item is active
$('.wsite-menu-wrap').find('li.wsite-menu-subitem-wrap').each(function(){
var $me = $(this);
if($me.hasClass('wsite-nav-current')) {
$me.parents().addClass('open');
}
});
// Add placeholder text to inputs
$('.wsite-form-sublabel').each(function(){
var sublabel = $(this).text();
$(this).prev('.wsite-form-input').attr('placeholder', sublabel);
});
// Add fullwidth class to gallery thumbs if less than 6
$('.imageGallery').each(function(){
if ($(this).children('div').length <= 6) {
$(this).children('div').addClass('fullwidth-mobile');
}
});
},
_checkCartItems: function() {
var base = this;
if($('#wsite-mini-cart').find('li.wsite-product-item').length > 0) {
$('body').addClass('cart-full');
} else {
$('body').removeClass('cart-full');
}
},
_moveLogin: function() {
var loginDetach = $('#member-login').detach();
$('.mobile-nav .wsite-menu-default li:last-child').after(loginDetach);
},
_attachEvents: function() {
var base = this;
// Move cart + login
if ($(window).width() <= 992) {
$.fn.intervalLoop('.mobile-nav #member-login', base._moveLogin, 800, 5);
}
// Subnav toggle
$('li.has-submenu').each(function(){
var $me = $(this);
var caret = $me.children('span.icon-caret');
caret.on('click', function(){
if($me.children('.wsite-menu-wrap.open').length > 0) {
caret.siblings('.wsite-menu-wrap').removeClass('open');
} else {
caret.siblings('.wsite-menu-wrap').addClass('open');
}
});
});
// Scroll on landing page
$('#contentArrow').on('click', function() {
$('html, body').animate({
scrollTop: $('.main-wrap').offset().top - $('.paris-header').outerHeight()
}, 500);
});
// Store category dropdown
$('.wsite-com-sidebar').expandableSidebar('sidebar-expanded');
// Search filters dropdown
$('#wsite-search-sidebar').expandableSidebar('sidebar-expanded');
// Init fancybox swipe on mobile
if ('ontouchstart' in window) {
$('body').on('click', 'a.w-fancybox', function() {
base._initSwipeGallery();
});
}
},
_initSwipeGallery: function() {
var base = this;
setTimeout(function(){
var touchGallery = document.getElementsByClassName('fancybox-wrap')[0];
var mc = new Hammer(touchGallery);
mc.on("panleft panright", function(ev) {
if (ev.type == "panleft") {
$("a.fancybox-next").trigger("click");
} else if (ev.type == "panright") {
$("a.fancybox-prev").trigger("click");
}
base._initSwipeGallery();
});
}, 500);
}
}
$(document).ready(function(){
parisController.init();
});
});
/***********************************
Plugin js
- /
/*! Hammer.JS - v2.0.4 - 2014-09-28
* http://hammerjs.github.io/ * * Copyright (c) 2014 Jorik Tangelder; * Licensed under the MIT license */
(function(window, document, exportName, undefined) {
'use strict';
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);
}
}
}
/**
* extend object.
* means that properties in dest will be overwritten by the ones in src.
* @param {Object} dest
* @param {Object} src
* @param {Boolean} [merge]
* @returns {Object} dest
*/
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;
}
/**
* 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
*/
function merge(dest, src) {
return extend(dest, src, true);
}
/**
* 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) {
extend(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; return (doc.defaultView || doc.parentWindow);
}
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);
input.scale = firstMultiple ? getScale(firstMultiple.pointers, pointers) : 1; input.rotation = firstMultiple ? getRotation(firstMultiple.pointers, pointers) : 0;
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 = last.deltaX - input.deltaX;
var deltaY = last.deltaY - input.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) {
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[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 ||
(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);
// pan-x and pan-y can be combined
if (hasPanX && hasPanY) {
return TOUCH_ACTION_PAN_X + ' ' + TOUCH_ACTION_PAN_Y;
}
// 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.id = uniqueId();
this.manager = null;
this.options = merge(options || {}, this.defaults);
// 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) {
extend(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(withState) {
self.manager.emit(self.options.event + (withState ? stateStr(state) : ), input);
}
// 'panstart' and 'panmove'
if (state < STATE_ENDED) {
emit(true);
}
emit(); // simple 'eventName' events
// panend and pancancel
if (state >= STATE_ENDED) {
emit(true);
}
},
/**
* 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 = extend({}, 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) {
this.manager.emit(this.options.event + direction, input);
}
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) {
this._super.emit.call(this, input);
if (input.scale !== 1) {
var inOut = input.scale < 1 ? 'in' : 'out';
this.manager.emit(this.options.event + inOut, 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: 500, // minimal time of the pointer to be pressed
threshold: 5 // 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: 0.65,
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.velocity;
} else if (direction & DIRECTION_HORIZONTAL) {
velocity = input.velocityX;
} else if (direction & DIRECTION_VERTICAL) {
velocity = input.velocityY;
}
return this._super.attrTest.call(this, input) &&
direction & input.direction &&
input.distance > this.options.threshold &&
abs(velocity) > this.options.velocity && input.eventType & INPUT_END;
},
emit: function(input) {
var direction = directionStr(input.direction);
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: 2, // 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 an 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 = '2.0.4';
/**
* 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) {
options = options || {};
this.options = merge(options, Hammer.defaults); 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(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) {
extend(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;
}
var recognizers = this.recognizers;
recognizer = this.get(recognizer);
recognizers.splice(inArray(recognizers, recognizer), 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].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;
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);
}
extend(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, inherit: inherit, bindFn: bindFn, prefixed: prefixed
});
if (typeof module != 'undefined' && module.exports) {
module.exports = Hammer;
} else {
window[exportName] = Hammer;
}
})(window, document, 'Hammer');