balmet.com

nprogress.js (11565B)

---

 /* NProgress, (c) 2013, 2014 Rico Sta. Cruz - http://ricostacruz.com/nprogress
  * @license MIT */
 
 ;(function(root, factory) {
 
   if (typeof define === 'function' && define.amd) {
     define(factory);
   } else if (typeof exports === 'object') {
     module.exports = factory();
   } else {
     root.NProgress = factory();
   }
 
 })(this, function() {
   var NProgress = {};
 
   NProgress.version = '0.2.0';
 
   var Settings = NProgress.settings = {
     minimum: 0.08,
     easing: 'ease',
     positionUsing: '',
     speed: 200,
     trickle: true,
     trickleRate: 0.02,
     trickleSpeed: 800,
     showSpinner: true,
     barSelector: '[role="bar"]',
     spinnerSelector: '[role="spinner"]',
     parent: 'body',
     template: '<div class="bar" role="bar"><div class="peg"></div></div><div class="spinner" role="spinner"><div class="spinner-icon"></div></div>'
   };
 
   /**
    * Updates configuration.
    *
    *     NProgress.configure({
    *       minimum: 0.1
    *     });
    */
   NProgress.configure = function(options) {
     var key, value;
     for (key in options) {
       value = options[key];
       if (value !== undefined && options.hasOwnProperty(key)) Settings[key] = value;
     }
 
     return this;
   };
 
   /**
    * Last number.
    */
 
   NProgress.status = null;
 
   /**
    * Sets the progress bar status, where `n` is a number from `0.0` to `1.0`.
    *
    *     NProgress.set(0.4);
    *     NProgress.set(1.0);
    */
 
   NProgress.set = function(n) {
     var started = NProgress.isStarted();
 
     n = clamp(n, Settings.minimum, 1);
     NProgress.status = (n === 1 ? null : n);
 
     var progress = NProgress.render(!started),
         bar      = progress.querySelector(Settings.barSelector),
         speed    = Settings.speed,
         ease     = Settings.easing;
 
     progress.offsetWidth; /* Repaint */
 
     queue(function(next) {
       // Set positionUsing if it hasn't already been set
       if (Settings.positionUsing === '') Settings.positionUsing = NProgress.getPositioningCSS();
 
       // Add transition
       css(bar, barPositionCSS(n, speed, ease));
 
       if (n === 1) {
         // Fade out
         css(progress, { 
           transition: 'none', 
           opacity: 1 
         });
         progress.offsetWidth; /* Repaint */
 
         setTimeout(function() {
           css(progress, { 
             transition: 'all ' + speed + 'ms linear', 
             opacity: 0 
           });
           setTimeout(function() {
             NProgress.remove();
             next();
           }, speed);
         }, speed);
       } else {
         setTimeout(next, speed);
       }
     });
 
     return this;
   };
 
   NProgress.isStarted = function() {
     return typeof NProgress.status === 'number';
   };
 
   /**
    * Shows the progress bar.
    * This is the same as setting the status to 0%, except that it doesn't go backwards.
    *
    *     NProgress.start();
    *
    */
   NProgress.start = function() {
     if (!NProgress.status) NProgress.set(0);
 
     var work = function() {
       setTimeout(function() {
         if (!NProgress.status) return;
         NProgress.trickle();
         work();
       }, Settings.trickleSpeed);
     };
 
     if (Settings.trickle) work();
 
     return this;
   };
 
   /**
    * Hides the progress bar.
    * This is the *sort of* the same as setting the status to 100%, with the
    * difference being `done()` makes some placebo effect of some realistic motion.
    *
    *     NProgress.done();
    *
    * If `true` is passed, it will show the progress bar even if its hidden.
    *
    *     NProgress.done(true);
    */
 
   NProgress.done = function(force) {
     if (!force && !NProgress.status) return this;
 
     return NProgress.inc(0.3 + 0.5 * Math.random()).set(1);
   };
 
   /**
    * Increments by a random amount.
    */
 
   NProgress.inc = function(amount) {
     var n = NProgress.status;
 
     if (!n) {
       return NProgress.start();
     } else {
       if (typeof amount !== 'number') {
         amount = (1 - n) * clamp(Math.random() * n, 0.1, 0.95);
       }
 
       n = clamp(n + amount, 0, 0.994);
       return NProgress.set(n);
     }
   };
 
   NProgress.trickle = function() {
     return NProgress.inc(Math.random() * Settings.trickleRate);
   };
 
   /**
    * Waits for all supplied jQuery promises and
    * increases the progress as the promises resolve.
    *
    * @param $promise jQUery Promise
    */
   (function() {
     var initial = 0, current = 0;
 
     NProgress.promise = function($promise) {
       if (!$promise || $promise.state() === "resolved") {
         return this;
       }
 
       if (current === 0) {
         NProgress.start();
       }
 
       initial++;
       current++;
 
       $promise.always(function() {
         current--;
         if (current === 0) {
             initial = 0;
             NProgress.done();
         } else {
             NProgress.set((initial - current) / initial);
         }
       });
 
       return this;
     };
 
   })();
 
   /**
    * (Internal) renders the progress bar markup based on the `template`
    * setting.
    */
 
   NProgress.render = function(fromStart) {
     if (NProgress.isRendered()) return document.getElementById('nprogress');
 
     addClass(document.documentElement, 'nprogress-busy');
     
     var progress = document.createElement('div');
     progress.id = 'nprogress';
     progress.innerHTML = Settings.template;
 
     var bar      = progress.querySelector(Settings.barSelector),
         perc     = fromStart ? '-100' : toBarPerc(NProgress.status || 0),
         parent   = document.querySelector(Settings.parent),
         spinner;
     
     css(bar, {
       transition: 'all 0 linear',
       transform: 'translate3d(' + perc + '%,0,0)'
     });
 
     if (!Settings.showSpinner) {
       spinner = progress.querySelector(Settings.spinnerSelector);
       spinner && removeElement(spinner);
     }
 
     if (parent != document.body) {
       addClass(parent, 'nprogress-custom-parent');
     }
 
     parent.appendChild(progress);
     return progress;
   };
 
   /**
    * Removes the element. Opposite of render().
    */
 
   NProgress.remove = function() {
     removeClass(document.documentElement, 'nprogress-busy');
     removeClass(document.querySelector(Settings.parent), 'nprogress-custom-parent');
     var progress = document.getElementById('nprogress');
     progress && removeElement(progress);
   };
 
   /**
    * Checks if the progress bar is rendered.
    */
 
   NProgress.isRendered = function() {
     return !!document.getElementById('nprogress');
   };
 
   /**
    * Determine which positioning CSS rule to use.
    */
 
   NProgress.getPositioningCSS = function() {
     // Sniff on document.body.style
     var bodyStyle = document.body.style;
 
     // Sniff prefixes
     var vendorPrefix = ('WebkitTransform' in bodyStyle) ? 'Webkit' :
                        ('MozTransform' in bodyStyle) ? 'Moz' :
                        ('msTransform' in bodyStyle) ? 'ms' :
                        ('OTransform' in bodyStyle) ? 'O' : '';
 
     if (vendorPrefix + 'Perspective' in bodyStyle) {
       // Modern browsers with 3D support, e.g. Webkit, IE10
       return 'translate3d';
     } else if (vendorPrefix + 'Transform' in bodyStyle) {
       // Browsers without 3D support, e.g. IE9
       return 'translate';
     } else {
       // Browsers without translate() support, e.g. IE7-8
       return 'margin';
     }
   };
 
   /**
    * Helpers
    */
 
   function clamp(n, min, max) {
     if (n < min) return min;
     if (n > max) return max;
     return n;
   }
 
   /**
    * (Internal) converts a percentage (`0..1`) to a bar translateX
    * percentage (`-100%..0%`).
    */
 
   function toBarPerc(n) {
     return (-1 + n) * 100;
   }
 
 
   /**
    * (Internal) returns the correct CSS for changing the bar's
    * position given an n percentage, and speed and ease from Settings
    */
 
   function barPositionCSS(n, speed, ease) {
     var barCSS;
 
     if (Settings.positionUsing === 'translate3d') {
       barCSS = { transform: 'translate3d('+toBarPerc(n)+'%,0,0)' };
     } else if (Settings.positionUsing === 'translate') {
       barCSS = { transform: 'translate('+toBarPerc(n)+'%,0)' };
     } else {
       barCSS = { 'margin-left': toBarPerc(n)+'%' };
     }
 
     barCSS.transition = 'all '+speed+'ms '+ease;
 
     return barCSS;
   }
 
   /**
    * (Internal) Queues a function to be executed.
    */
 
   var queue = (function() {
     var pending = [];
     
     function next() {
       var fn = pending.shift();
       if (fn) {
         fn(next);
       }
     }
 
     return function(fn) {
       pending.push(fn);
       if (pending.length == 1) next();
     };
   })();
 
   /**
    * (Internal) Applies css properties to an element, similar to the jQuery 
    * css method.
    *
    * While this helper does assist with vendor prefixed property names, it 
    * does not perform any manipulation of values prior to setting styles.
    */
 
   var css = (function() {
     var cssPrefixes = [ 'Webkit', 'O', 'Moz', 'ms' ],
         cssProps    = {};
 
     function camelCase(string) {
       return string.replace(/^-ms-/, 'ms-').replace(/-([\da-z])/gi, function(match, letter) {
         return letter.toUpperCase();
       });
     }
 
     function getVendorProp(name) {
       var style = document.body.style;
       if (name in style) return name;
 
       var i = cssPrefixes.length,
           capName = name.charAt(0).toUpperCase() + name.slice(1),
           vendorName;
       while (i--) {
         vendorName = cssPrefixes[i] + capName;
         if (vendorName in style) return vendorName;
       }
 
       return name;
     }
 
     function getStyleProp(name) {
       name = camelCase(name);
       return cssProps[name] || (cssProps[name] = getVendorProp(name));
     }
 
     function applyCss(element, prop, value) {
       prop = getStyleProp(prop);
       element.style[prop] = value;
     }
 
     return function(element, properties) {
       var args = arguments,
           prop, 
           value;
 
       if (args.length == 2) {
         for (prop in properties) {
           value = properties[prop];
           if (value !== undefined && properties.hasOwnProperty(prop)) applyCss(element, prop, value);
         }
       } else {
         applyCss(element, args[1], args[2]);
       }
     }
   })();
 
   /**
    * (Internal) Determines if an element or space separated list of class names contains a class name.
    */
 
   function hasClass(element, name) {
     var list = typeof element == 'string' ? element : classList(element);
     return list.indexOf(' ' + name + ' ') >= 0;
   }
 
   /**
    * (Internal) Adds a class to an element.
    */
 
   function addClass(element, name) {
     var oldList = classList(element),
         newList = oldList + name;
 
     if (hasClass(oldList, name)) return; 
 
     // Trim the opening space.
     element.className = newList.substring(1);
   }
 
   /**
    * (Internal) Removes a class from an element.
    */
 
   function removeClass(element, name) {
     var oldList = classList(element),
         newList;
 
     if (!hasClass(element, name)) return;
 
     // Replace the class name.
     newList = oldList.replace(' ' + name + ' ', ' ');
 
     // Trim the opening and closing spaces.
     element.className = newList.substring(1, newList.length - 1);
   }
 
   /**
    * (Internal) Gets a space separated list of the class names on the element. 
    * The list is wrapped with a single space on each end to facilitate finding 
    * matches within the list.
    */
 
   function classList(element) {
     return (' ' + (element.className || '') + ' ').replace(/\s+/gi, ' ');
   }
 
   /**
    * (Internal) Removes an element from the DOM.
    */
 
   function removeElement(element) {
     element && element.parentNode && element.parentNode.removeChild(element);
   }
 
   return NProgress;
 });