add snap.js script

1 files changed, 568 insertions, 0 deletions

diff --git a/core/js/snap.js b/core/js/snap.js
new file mode 100755
index 00000000000..0bbefe44203
--- /dev/null
+++ b/core/js/snap.js
@@ -0,0 +1,568 @@
+/*
+ * 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*/
+(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;
+            },
+            angleOfDrag: function(x, y) {
+                var degrees, theta;
+                // Calc Theta
+                theta = Math.atan2(-(cache.startDragY - y), (cache.startDragX - x));
+                if (theta < 0) {
+                    theta += 2 * Math.PI;
+                }
+                // Calc Degrees
+                degrees = Math.floor(theta * (180 / Math.PI) - 180);
+                if (degrees < 0 && degrees > -180) {
+                    degrees = 360 - Math.abs(degrees);
+                }
+                return Math.abs(degrees);
+            },
+            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 = '';
+                    }
+                }
+            },
+            drag: {
+                listen: function() {
+                    cache.translation = 0;
+                    cache.easing = false;
+                    utils.events.addEvent(settings.element, utils.eventType('down'), action.drag.startDrag);
+                    utils.events.addEvent(settings.element, utils.eventType('move'), action.drag.dragging);
+                    utils.events.addEvent(settings.element, utils.eventType('up'), action.drag.endDrag);
+                },
+                stopListening: function() {
+                    utils.events.removeEvent(settings.element, utils.eventType('down'), action.drag.startDrag);
+                    utils.events.removeEvent(settings.element, utils.eventType('move'), action.drag.dragging);
+                    utils.events.removeEvent(settings.element, utils.eventType('up'), action.drag.endDrag);
+                },
+                startDrag: function(e) {
+                    // No drag on ignored elements
+                    var target = e.target ? e.target : e.srcElement,
+                        ignoreParent = utils.parentUntil(target, 'data-snap-ignore');
+                    
+                    if (ignoreParent) {
+                        utils.dispatchEvent('ignore');
+                        return;
+                    }
+                    
+                    
+                    if(settings.dragger){
+                        var dragParent = utils.parentUntil(target, settings.dragger);
+                        
+                        // Only use dragger if we're in a closed state
+                        if( !dragParent && 
+                            (cache.translation !== settings.minPosition && 
+                            cache.translation !== settings.maxPosition
+                        )){
+                            return;
+                        }
+                    }
+                    
+                    utils.dispatchEvent('start');
+                    settings.element.style[cache.vendor+'Transition'] = '';
+                    cache.isDragging = true;
+                    cache.hasIntent = null;
+                    cache.intentChecked = false;
+                    cache.startDragX = utils.page('X', e);
+                    cache.startDragY = utils.page('Y', e);
+                    cache.dragWatchers = {
+                        current: 0,
+                        last: 0,
+                        hold: 0,
+                        state: ''
+                    };
+                    cache.simpleStates = {
+                        opening: null,
+                        towards: null,
+                        hyperExtending: null,
+                        halfway: null,
+                        flick: null,
+                        translation: {
+                            absolute: 0,
+                            relative: 0,
+                            sinceDirectionChange: 0,
+                            percentage: 0
+                        }
+                    };
+                },
+                dragging: function(e) {
+                    if (cache.isDragging && settings.touchToDrag) {
+
+                        var thePageX = utils.page('X', e),
+                            thePageY = utils.page('Y', e),
+                            translated = cache.translation,
+                            absoluteTranslation = action.translate.get.matrix(4),
+                            whileDragX = thePageX - cache.startDragX,
+                            openingLeft = absoluteTranslation > 0,
+                            translateTo = whileDragX,
+                            diff;
+
+                        // Shown no intent already
+                        if((cache.intentChecked && !cache.hasIntent)){
+                            return;
+                        }
+
+                        if(settings.addBodyClasses){
+                            if((absoluteTranslation)>0){
+                                utils.klass.add(doc.body, 'snapjs-left');
+                                utils.klass.remove(doc.body, 'snapjs-right');
+                            } else if((absoluteTranslation)<0){
+                                utils.klass.add(doc.body, 'snapjs-right');
+                                utils.klass.remove(doc.body, 'snapjs-left');
+                            }
+                        }
+
+                        if (cache.hasIntent === false || cache.hasIntent === null) {
+                            var deg = utils.angleOfDrag(thePageX, thePageY),
+                                inRightRange = (deg >= 0 && deg <= settings.slideIntent) || (deg <= 360 && deg > (360 - settings.slideIntent)),
+                                inLeftRange = (deg >= 180 && deg <= (180 + settings.slideIntent)) || (deg <= 180 && deg >= (180 - settings.slideIntent));
+                            if (!inLeftRange && !inRightRange) {
+                                cache.hasIntent = false;
+                            } else {
+                                cache.hasIntent = true;
+                            }
+                            cache.intentChecked = true;
+                        }
+
+                        if (
+                            (settings.minDragDistance>=Math.abs(thePageX-cache.startDragX)) || // Has user met minimum drag distance?
+                            (cache.hasIntent === false)
+                        ) {
+                            return;
+                        }
+
+                        utils.events.prevent(e);
+                        utils.dispatchEvent('drag');
+
+                        cache.dragWatchers.current = thePageX;
+                        // Determine which direction we are going
+                        if (cache.dragWatchers.last > thePageX) {
+                            if (cache.dragWatchers.state !== 'left') {
+                                cache.dragWatchers.state = 'left';
+                                cache.dragWatchers.hold = thePageX;
+                            }
+                            cache.dragWatchers.last = thePageX;
+                        } else if (cache.dragWatchers.last < thePageX) {
+                            if (cache.dragWatchers.state !== 'right') {
+                                cache.dragWatchers.state = 'right';
+                                cache.dragWatchers.hold = thePageX;
+                            }
+                            cache.dragWatchers.last = thePageX;
+                        }
+                        if (openingLeft) {
+                            // Pulling too far to the right
+                            if (settings.maxPosition < absoluteTranslation) {
+                                diff = (absoluteTranslation - settings.maxPosition) * settings.resistance;
+                                translateTo = whileDragX - diff;
+                            }
+                            cache.simpleStates = {
+                                opening: 'left',
+                                towards: cache.dragWatchers.state,
+                                hyperExtending: settings.maxPosition < absoluteTranslation,
+                                halfway: absoluteTranslation > (settings.maxPosition / 2),
+                                flick: Math.abs(cache.dragWatchers.current - cache.dragWatchers.hold) > settings.flickThreshold,
+                                translation: {
+                                    absolute: absoluteTranslation,
+                                    relative: whileDragX,
+                                    sinceDirectionChange: (cache.dragWatchers.current - cache.dragWatchers.hold),
+                                    percentage: (absoluteTranslation/settings.maxPosition)*100
+                                }
+                            };
+                        } else {
+                            // Pulling too far to the left
+                            if (settings.minPosition > absoluteTranslation) {
+                                diff = (absoluteTranslation - settings.minPosition) * settings.resistance;
+                                translateTo = whileDragX - diff;
+                            }
+                            cache.simpleStates = {
+                                opening: 'right',
+                                towards: cache.dragWatchers.state,
+                                hyperExtending: settings.minPosition > absoluteTranslation,
+                                halfway: absoluteTranslation < (settings.minPosition / 2),
+                                flick: Math.abs(cache.dragWatchers.current - cache.dragWatchers.hold) > settings.flickThreshold,
+                                translation: {
+                                    absolute: absoluteTranslation,
+                                    relative: whileDragX,
+                                    sinceDirectionChange: (cache.dragWatchers.current - cache.dragWatchers.hold),
+                                    percentage: (absoluteTranslation/settings.minPosition)*100
+                                }
+                            };
+                        }
+                        action.translate.x(translateTo + translated);
+                    }
+                },
+                endDrag: function(e) {
+                    if (cache.isDragging) {
+                        utils.dispatchEvent('end');
+                        var translated = action.translate.get.matrix(4);
+
+                        // Tap Close
+                        if (cache.dragWatchers.current === 0 && translated !== 0 && settings.tapToClose) {
+                            utils.dispatchEvent('close');
+                            utils.events.prevent(e);
+                            action.translate.easeTo(0);
+                            cache.isDragging = false;
+                            cache.startDragX = 0;
+                            return;
+                        }
+
+                        // Revealing Left
+                        if (cache.simpleStates.opening === 'left') {
+                            // Halfway, Flicking, or Too Far Out
+                            if ((cache.simpleStates.halfway || cache.simpleStates.hyperExtending || cache.simpleStates.flick)) {
+                                if (cache.simpleStates.flick && cache.simpleStates.towards === 'left') { // Flicking Closed
+                                    action.translate.easeTo(0);
+                                } else if (
+                                    (cache.simpleStates.flick && cache.simpleStates.towards === 'right') || // Flicking Open OR
+                                    (cache.simpleStates.halfway || cache.simpleStates.hyperExtending) // At least halfway open OR hyperextending
+                                ) {
+                                    action.translate.easeTo(settings.maxPosition); // Open Left
+                                }
+                            } else {
+                                action.translate.easeTo(0); // Close Left
+                            }
+                            // Revealing Right
+                        } else if (cache.simpleStates.opening === 'right') {
+                            // Halfway, Flicking, or Too Far Out
+                            if ((cache.simpleStates.halfway || cache.simpleStates.hyperExtending || cache.simpleStates.flick)) {
+                                if (cache.simpleStates.flick && cache.simpleStates.towards === 'right') { // Flicking Closed
+                                    action.translate.easeTo(0);
+                                } else if (
+                                    (cache.simpleStates.flick && cache.simpleStates.towards === 'left') || // Flicking Open OR
+                                    (cache.simpleStates.halfway || cache.simpleStates.hyperExtending) // At least halfway open OR hyperextending
+                                ) {
+                                    action.translate.easeTo(settings.minPosition); // Open Right
+                                }
+                            } else {
+                                action.translate.easeTo(0); // Close Right
+                            }
+                        }
+                        cache.isDragging = false;
+                        cache.startDragX = utils.page('X', e);
+                    }
+                }
+            }
+        },
+        init = function(opts) {
+            if (opts.element) {
+                utils.deepExtend(settings, opts);
+                cache.vendor = utils.vendor();
+                action.drag.listen();
+            }
+        };
+        /*
+         * 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');
+            action.drag.listen();
+        };
+        this.disable = function() {
+            utils.dispatchEvent('disable');
+            action.drag.stopListening();
+        };
+
+        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);