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File Content

/*
* Snap.js
*
* Copyright 2013, Jacob Kelley - http://jakiestfu.com/
* Released under the MIT Licence
* http://opensource.org/licenses/MIT
*
* Github: http://github.com/jakiestfu/Snap.js/
* Version: 1.9.3
*/
/*jslint browser: true*/
/*global define, module, ender*/
/*Drag Functionality has been removed to prevent drag functionality from confusing UI */
(function(win, doc) {
'use strict';
var Snap = Snap || function(userOpts) {
var settings = {
element: null,
dragger: null,
disable: 'none',
addBodyClasses: true,
hyperextensible: true,
resistance: 0.5,
flickThreshold: 50,
transitionSpeed: 0.3,
easing: 'ease',
maxPosition: 266,
minPosition: -266,
tapToClose: true,
touchToDrag: true,
slideIntent: 40, // degrees
minDragDistance: 5
},
cache = {
simpleStates: {
opening: null,
towards: null,
hyperExtending: null,
halfway: null,
flick: null,
translation: {
absolute: 0,
relative: 0,
sinceDirectionChange: 0,
percentage: 0
}
}
},
eventList = {},
utils = {
hasTouch: ('ontouchstart' in doc.documentElement || win.navigator.msPointerEnabled),
eventType: function(action) {
var eventTypes = {
down: (utils.hasTouch ? 'touchstart' : 'mousedown'),
move: (utils.hasTouch ? 'touchmove' : 'mousemove'),
up: (utils.hasTouch ? 'touchend' : 'mouseup'),
out: (utils.hasTouch ? 'touchcancel' : 'mouseout')
};
return eventTypes[action];
},
page: function(t, e){
return (utils.hasTouch && e.touches.length && e.touches[0]) ? e.touches[0]['page'+t] : e['page'+t];
},
klass: {
has: function(el, name){
return (el.className).indexOf(name) !== -1;
},
add: function(el, name){
if(!utils.klass.has(el, name) && settings.addBodyClasses){
el.className += " "+name;
}
},
remove: function(el, name){
if(settings.addBodyClasses){
el.className = (el.className).replace(name, "").replace(/^\s+|\s+$/g, '');
}
}
},
dispatchEvent: function(type) {
if (typeof eventList[type] === 'function') {
return eventList[type].call();
}
},
vendor: function(){
var tmp = doc.createElement("div"),
prefixes = 'webkit Moz O ms'.split(' '),
i;
for (i in prefixes) {
if (typeof tmp.style[prefixes[i] + 'Transition'] !== 'undefined') {
return prefixes[i];
}
}
},
transitionCallback: function(){
return (cache.vendor==='Moz' || cache.vendor==='ms') ? 'transitionend' : cache.vendor+'TransitionEnd';
},
canTransform: function(){
return typeof settings.element.style[cache.vendor+'Transform'] !== 'undefined';
},
deepExtend: function(destination, source) {
var property;
for (property in source) {
if (source[property] && source[property].constructor && source[property].constructor === Object) {
destination[property] = destination[property] || {};
utils.deepExtend(destination[property], source[property]);
} else {
destination[property] = source[property];
}
}
return destination;
},
events: {
addEvent: function addEvent(element, eventName, func) {
if (element.addEventListener) {
return element.addEventListener(eventName, func, false);
} else if (element.attachEvent) {
return element.attachEvent("on" + eventName, func);
}
},
removeEvent: function addEvent(element, eventName, func) {
if (element.addEventListener) {
return element.removeEventListener(eventName, func, false);
} else if (element.attachEvent) {
return element.detachEvent("on" + eventName, func);
}
},
prevent: function(e) {
if (e.preventDefault) {
e.preventDefault();
} else {
e.returnValue = false;
}
}
},
parentUntil: function(el, attr) {
var isStr = typeof attr === 'string';
while (el.parentNode) {
if (isStr && el.getAttribute && el.getAttribute(attr)){
return el;
} else if(!isStr && el === attr){
return el;
}
el = el.parentNode;
}
return null;
}
},
action = {
translate: {
get: {
matrix: function(index) {

if( !utils.canTransform() ){
return parseInt(settings.element.style.left, 10);
} else {
var matrix = win.getComputedStyle(settings.element)[cache.vendor+'Transform'].match(/\((.*)\)/),
ieOffset = 8;
if (matrix) {
matrix = matrix[1].split(',');
if(matrix.length===16){
index+=ieOffset;
}
return parseInt(matrix[index], 10);
}
return 0;
}
}
},
easeCallback: function(){
settings.element.style[cache.vendor+'Transition'] = '';
cache.translation = action.translate.get.matrix(4);
cache.easing = false;
clearInterval(cache.animatingInterval);

if(cache.easingTo===0){
utils.klass.remove(doc.body, 'snapjs-right');
utils.klass.remove(doc.body, 'snapjs-left');
}

utils.dispatchEvent('animated');
utils.events.removeEvent(settings.element, utils.transitionCallback(), action.translate.easeCallback);
},
easeTo: function(n) {

if( !utils.canTransform() ){
cache.translation = n;
action.translate.x(n);
} else {
cache.easing = true;
cache.easingTo = n;

settings.element.style[cache.vendor+'Transition'] = 'all ' + settings.transitionSpeed + 's ' + settings.easing;

cache.animatingInterval = setInterval(function() {
utils.dispatchEvent('animating');
}, 1);

utils.events.addEvent(settings.element, utils.transitionCallback(), action.translate.easeCallback);
action.translate.x(n);
}
if(n===0){
settings.element.style[cache.vendor+'Transform'] = '';
}
},
x: function(n) {
if( (settings.disable==='left' && n>0) ||
(settings.disable==='right' && n<0)
){ return; }

if( !settings.hyperextensible ){
if( n===settings.maxPosition || n>settings.maxPosition ){
n=settings.maxPosition;
} else if( n===settings.minPosition || n<settings.minPosition ){
n=settings.minPosition;
}
}

n = parseInt(n, 10);
if(isNaN(n)){
n = 0;
}

if( utils.canTransform() ){
var theTranslate = 'translate3d(' + n + 'px, 0,0)';
settings.element.style[cache.vendor+'Transform'] = theTranslate;
} else {
settings.element.style.width = (win.innerWidth || doc.documentElement.clientWidth)+'px';

settings.element.style.left = n+'px';
settings.element.style.right = '';
}
}
}
},
init = function(opts) {
if (opts.element) {
utils.deepExtend(settings, opts);
cache.vendor = utils.vendor();
}
};
/*
* Public
*/
this.open = function(side) {
utils.dispatchEvent('open');
utils.klass.remove(doc.body, 'snapjs-expand-left');
utils.klass.remove(doc.body, 'snapjs-expand-right');

if (side === 'left') {
cache.simpleStates.opening = 'left';
cache.simpleStates.towards = 'right';
utils.klass.add(doc.body, 'snapjs-left');
utils.klass.remove(doc.body, 'snapjs-right');
action.translate.easeTo(settings.maxPosition);
} else if (side === 'right') {
cache.simpleStates.opening = 'right';
cache.simpleStates.towards = 'left';
utils.klass.remove(doc.body, 'snapjs-left');
utils.klass.add(doc.body, 'snapjs-right');
action.translate.easeTo(settings.minPosition);
}
};
this.close = function() {
utils.dispatchEvent('close');
action.translate.easeTo(0);
};
this.expand = function(side){
var to = win.innerWidth || doc.documentElement.clientWidth;

if(side==='left'){
utils.dispatchEvent('expandLeft');
utils.klass.add(doc.body, 'snapjs-expand-left');
utils.klass.remove(doc.body, 'snapjs-expand-right');
} else {
utils.dispatchEvent('expandRight');
utils.klass.add(doc.body, 'snapjs-expand-right');
utils.klass.remove(doc.body, 'snapjs-expand-left');
to *= -1;
}
action.translate.easeTo(to);
};

this.on = function(evt, fn) {
eventList[evt] = fn;
return this;
};
this.off = function(evt) {
if (eventList[evt]) {
eventList[evt] = false;
}
};

this.enable = function() {
utils.dispatchEvent('enable');
};
this.disable = function() {
utils.dispatchEvent('disable');
};

this.settings = function(opts){
utils.deepExtend(settings, opts);
};

this.state = function() {
var state,
fromLeft = action.translate.get.matrix(4);
if (fromLeft === settings.maxPosition) {
state = 'left';
} else if (fromLeft === settings.minPosition) {
state = 'right';
} else {
state = 'closed';
}
return {
state: state,
info: cache.simpleStates
};
};
init(userOpts);
};
if ((typeof module !== 'undefined') && module.exports) {
module.exports = Snap;
}
if (typeof ender === 'undefined') {
this.Snap = Snap;
}
if ((typeof define === "function") && define.amd) {
define("snap", [], function() {
return Snap;
});
}
}).call(this, window, document);