text: /**
   * smoothState.js is a jQuery plugin to stop page load jank.
   *
   * This jQuery plugin progressively enhances page loads to 
   * behave more like a single-page application.
   *
   * @author  Miguel Ángel Pérez   reachme@miguel-perez.com
   * @see     https://github.com/miguel-perez/jquery.smoothState.js
   * 
   */
  ;(function ( $, window, document, undefined ) {
      "use strict";
  
      var
          /** Used later to scroll page to the top */
          $body       = $("html, body"),
          
          /** Used in development mode to console out useful warnings */
          consl       = (window.console || false),
          
          /** Plugin default options */
          defaults    = {
  
              /** jquery element string to specify which anchors smoothstate should bind to */
              anchors : "a",
  
              /** If set to true, smoothState will prefetch a link's contents on hover */
              prefetch : false,
              
              /** A selecor that deinfes with links should be ignored by smoothState */
              blacklist : ".no-smoothstate, [target]",
              
              /** If set to true, smoothState will log useful debug information instead of aborting */
              development : false,
              
              /** The number of pages smoothState will try to store in memory and not request again */
              pageCacheSize : 0,
              
              /** A function that can be used to alter urls before they are used to request content */
              alterRequestUrl : function (url) {
                  return url;
              },
              
              /** Run when a link has been activated */
              onStart : {
                  duration: 0,
                  render: function (url, $container) {
                      $body.scrollTop(0);
                  }
              },
  
              /** Run if the page request is still pending and onStart has finished animating */
              onProgress : {
                  duration: 0,
                  render: function (url, $container) {
                      $body.css("cursor", "wait");
                      $body.find("a").css("cursor", "wait");
                  }
              },
  
              /** Run when requested content is ready to be injected into the page  */
              onEnd : {
                  duration: 0,
                  render: function (url, $container, $content) {
                      $body.css("cursor", "auto");
                      $body.find("a").css("cursor", "auto");
                      $container.html($content);
                  }
              },
  
              /** Run when content has been injected and all animations are complete  */
              callback : function(url, $container, $content) {
  
              }
          },
          
          /** Utility functions that are decoupled from SmoothState */
          utility     = {
  
              /**
               * Checks to see if the url is external
               * @param   {string}    url - url being evaluated
               * @see     http://stackoverflow.com/questions/6238351/fastest-way-to-detect-external-urls
               * 
               */
              isExternal: function (url) {
                  var match = url.match(/^([^:\/?#]+:)?(?:\/\/([^\/?#]*))?([^?#]+)?(\?[^#]*)?(#.*)?/);
                  if (typeof match[1] === "string" && match[1].length > 0 && match[1].toLowerCase() !== window.location.protocol) {
                      return true;
                  }
                  if (typeof match[2] === "string" && match[2].length > 0 && match[2].replace(new RegExp(":(" + {"http:": 80, "https:": 443}[window.location.protocol] + ")?$"), "") !== window.location.host) {
                      return true;
                  }
                  return false;
              },
  
              /**
               * Checks to see if the url is an internal hash
               * @param   {string}    url - url being evaluated
               * 
               */
              isHash: function (url) {
                  var hasPathname = (url.indexOf(window.location.pathname) > 0) ? true : false,
                      hasHash = (url.indexOf("#") > 0) ? true : false;
                  return (hasPathname && hasHash) ? true : false;
              },
  
              /**
               * Checks to see if we should be loading this URL
               * @param   {string}    url - url being evaluated
               * @param   {string}    blacklist - jquery selector
               * 
               */
              shouldLoad: function ($anchor, blacklist) {
                  var url = $anchor.prop("href");
                  // URL will only be loaded if it"s not an external link, hash, or blacklisted
                  return (!utility.isExternal(url) && !utility.isHash(url) && !$anchor.is(blacklist));
              },
  
              /**
               * Prevents jQuery from stripping elements from $(html)
               * @param   {string}    url - url being evaluated
               * @author  Ben Alman   http://benalman.com/
               * @see     https://gist.github.com/cowboy/742952
               * 
               */
              htmlDoc: function (html) {
                  var parent,
                      elems       = $(),
                      matchTag    = /<(\/?)(html|head|body|title|base|meta)(\s+[^>]*)?>/ig,
                      prefix      = "ss" + Math.round(Math.random() * 100000),
                      htmlParsed  = html.replace(matchTag, function(tag, slash, name, attrs) {
                          var obj = {};
                          if (!slash) {
                              elems = elems.add("<" + name + "/>");
                              if (attrs) {
                                  $.each($("<div" + attrs + "/>")[0].attributes, function(i, attr) {
                                  obj[attr.name] = attr.value;
                                  });
                              }
                              elems.eq(-1).attr(obj);
                          }
                          return "<" + slash + "div" + (slash ? "" : " id='" + prefix + (elems.length - 1) + "'") + ">";
                      });
  
                  // If no placeholder elements were necessary, just return normal
                  // jQuery-parsed HTML.
                  if (!elems.length) {
                      return $(html);
                  }
                  // Create parent node if it hasn"t been created yet.
                  if (!parent) {
                      parent = $("<div/>");
                  }
                  // Create the parent node and append the parsed, place-held HTML.
                  parent.html(htmlParsed);
                  
                  // Replace each placeholder element with its intended element.
                  $.each(elems, function(i) {
                      var elem = parent.find("#" + prefix + i).before(elems[i]);
                      elems.eq(i).html(elem.contents());
                      elem.remove();
                  });
  
                  return parent.children().unwrap();
              },
  
              /**
               * Resets an object if it has too many properties
               *
               * This is used to clear the "cache" object that stores
               * all of the html. This would prevent the client from
               * running out of memory and allow the user to hit the 
               * server for a fresh copy of the content.
               *
               * @param   {object}    obj
               * @param   {number}    cap
               * 
               */
              clearIfOverCapacity: function (obj, cap) {
                  // Polyfill Object.keys if it doesn"t exist
                  if (!Object.keys) {
                      Object.keys = function (obj) {
                          var keys = [],
                              k;
                          for (k in obj) {
                              if (Object.prototype.hasOwnProperty.call(obj, k)) {
                                  keys.push(k);
                              }
                          }
                          return keys;
                      };
                  }
  
                  if (Object.keys(obj).length > cap) {
                      obj = {};
                  }
  
                  return obj;
              },
  
              /**
               * Finds the inner content of an element, by an ID, from a jQuery object
               * @param   {string}    id
               * @param   {object}    $html
               * 
               */
              getContentById: function (id, $html) {
                  $html = ($html instanceof jQuery) ? $html : utility.htmlDoc($html);
                  var $insideElem         = $html.find(id),
                      updatedContainer    = ($insideElem.length) ? $.trim($insideElem.html()) : $html.filter(id).html(),
                      newContent          = (updatedContainer.length) ? $(updatedContainer) : null;
                  return newContent;
              },
  
              /**
               * Stores html content as jquery object in given object
               * @param   {object}    object - object contents will be stored into
               * @param   {string}    url - url to be used as the prop
               * @param   {jquery}    html - contents to store
               * 
               */
              storePageIn: function (object, url, $html) {
                  $html = ($html instanceof jQuery) ? $html : utility.htmlDoc($html);
                  object[url] = { // Content is indexed by the url
                      status: "loaded",
                      title: $html.find("title").text(), // Stores the title of the page
                      html: $html // Stores the contents of the page
                  };
                  return object;
              },
  
              /**
               * Triggers an "allanimationend" event when all animations are complete
               * @param   {object}    $element - jQuery object that should trigger event
               * @param   {string}    resetOn - which other events to trigger allanimationend on
               * 
               */
               triggerAllAnimationEndEvent: function ($element, resetOn) {
  
                  resetOn = " " + resetOn || "";
  
                  var animationCount      = 0,
                      animationstart      = "animationstart webkitAnimationStart oanimationstart MSAnimationStart",
                      animationend        = "animationend webkitAnimationEnd oanimationend MSAnimationEnd",
                      eventname           = "allanimationend",
                      onAnimationStart    = function (e) {
                          if ($(e.delegateTarget).is($element)) {
                              e.stopPropagation();
                              animationCount ++;
                          }
                      },
                      onAnimationEnd      = function (e) {
                          if ($(e.delegateTarget).is($element)) {
                              e.stopPropagation();
                              animationCount --;
                              if(animationCount === 0) {
                                  $element.trigger(eventname);
                              }
                          }
                      };
  
                  $element.on(animationstart, onAnimationStart);
                  $element.on(animationend, onAnimationEnd);
  
                  $element.on("allanimationend" + resetOn, function(){
                      animationCount = 0;
                      utility.redraw($element);
                  });
              },
  
              /** Forces browser to redraw elements */
              redraw: function ($element) {
                  $element.height(0);
  			    setTimeout(function(){$element.height("auto");}, 0);
              }
          },
  
          /** Handles the popstate event, like when the user hits "back" */
          onPopState = function ( e ) {
              if(e.state !== null) {
                  var url     = window.location.href,
                      $page   = $("#" + e.state.id),
                      page    = $page.data("smoothState");
                  
                  if(page.href !== url && !utility.isHash(url)) {
                      page.load(url, true);
                  }
              }
          },
  
          /** Constructor function */
          SmoothState = function ( element, options ) {
              var
                  /** Container element smoothState is run on */
                  $container  = $(element),
                  
                  /** Variable that stores pages after they are requested */
                  cache       = {},
                  
                  /** Url of the content that is currently displayed */
                  currentHref = window.location.href,
  
                  /**
                   * Loads the contents of a url into our container 
                   *
                   * @param   {string}    url
                   * @param   {bool}      isPopped - used to determine if whe should
                   *                      add a new item into the history object
                   * 
                   */
                  load = function (url, isPopped) {
                      
                      /** Makes this an optional variable by setting a default */
                      isPopped = isPopped || false;
  
                      var
                          /** Used to check if the onProgress function has been run */
                          hasRunCallback  = false,
  
                          callbBackEnded  = false,
                          
                          /** List of responses for the states of the page request */
                          responses       = {
  
                              /** Page is ready, update the content */
                              loaded: function() {
                                  var eventName = hasRunCallback ? "ss.onProgressEnd" : "ss.onStartEnd";
  
                                  if(!callbBackEnded || !hasRunCallback) {
                                      $container.one(eventName, function(){
                                          updateContent(url);
                                      });
                                  } else if(callbBackEnded) {
                                      updateContent(url);
                                  }
  
                                  if(!isPopped) {
                                      window.history.pushState({ id: $container.prop("id") }, cache[url].title, url);
                                  }
                              },
  
                              /** Loading, wait 10 ms and check again */
                              fetching: function() {
                                  
                                  if(!hasRunCallback) {
                                      
                                      hasRunCallback = true;
                                      
                                      // Run the onProgress callback and set trigger
                                      $container.one("ss.onStartEnd", function(){
                                          options.onProgress.render(url, $container, null);
                                          
                                          setTimeout(function(){
                                              $container.trigger("ss.onProgressEnd");
                                              callbBackEnded = true;
                                          }, options.onStart.duration);
                                      
                                      });
                                  }
                                  
                                  setTimeout(function () {
                                      // Might of been canceled, better check!
                                      if(cache.hasOwnProperty(url)){
                                          responses[cache[url].status]();
                                      }
                                  }, 10);
                              },
  
                              /** Error, abort and redirect */
                              error: function(){
                                  window.location = url;
                              }
                          };
                      
                      if (!cache.hasOwnProperty(url)) {
                          fetch(url);
                      }
                      
                      // Run the onStart callback and set trigger
                      options.onStart.render(url, $container, null);
                      setTimeout(function(){
                          $container.trigger("ss.onStartEnd");
                      }, options.onStart.duration);
  
                      // Start checking for the status of content
                      responses[cache[url].status]();
  
                  },
  
                  /** Updates the contents from cache[url] */
                  updateContent = function (url) {
                      // If the content has been requested and is done:
                      var containerId = "#" + $container.prop("id"),
                          $content    = cache[url] ? utility.getContentById(containerId, cache[url].html) : null;
  
                      if($content) {
                          document.title = cache[url].title;
                          $container.data("smoothState").href = url;
                          
                          // Call the onEnd callback and set trigger
                          options.onEnd.render(url, $container, $content);
  
                          $container.one("ss.onEndEnd", function(){
                              options.callback(url, $container, $content);
                          });
  
                          setTimeout(function(){
                              $container.trigger("ss.onEndEnd");
                          }, options.onEnd.duration);
  
                      } else if (!$content && options.development && consl) {
                          // Throw warning to help debug in development mode
                          consl.warn("No element with an id of " + containerId + " in response from " + url + " in " + cache);
                      } else {
                          // No content availble to update with, aborting...
                          window.location = url;
                      }
                  },
  
                  /**
                   * Fetches the contents of a url and stores it in the "cache" varible
                   * @param   {string}    url
                   * 
                   */
                  fetch = function (url) {
  
                      // Don"t fetch we have the content already
                      if(cache.hasOwnProperty(url)) {
                          return;
                      }
  
                      cache = utility.clearIfOverCapacity(cache, options.pageCacheSize);
                      
                      cache[url] = { status: "fetching" };
  
                      var requestUrl  = options.alterRequestUrl(url) || url,
                          request     = $.ajax(requestUrl);
  
                      // Store contents in cache variable if successful
                      request.success(function (html) {
                          // Clear cache varible if it"s getting too big
                          utility.storePageIn(cache, url, html);
                          $container.data("smoothState").cache = cache;
                      });
  
                      // Mark as error
                      request.error(function () {
                          cache[url].status = "error";
                      });
                  },
                  /**
                   * Binds to the hover event of a link, used for prefetching content
                   *
                   * @param   {object}    event
                   * 
                   */
                  hoverAnchor = function (event) {
                      var $anchor = $(event.currentTarget),
                          url     = $anchor.prop("href");
                      if (utility.shouldLoad($anchor, options.blacklist)) {
                          event.stopPropagation();
                          fetch(url);
                      }
                  },
  
                  /**
                   * Binds to the click event of a link, used to show the content
                   *
                   * @param   {object}    event
                   * 
                   */
                  clickAnchor = function (event) {
                      var $anchor     = $(event.currentTarget),
                          url         = $anchor.prop("href");
  
                      // Ctrl (or Cmd) + click must open a new tab
                      if (!event.metaKey && !event.ctrlKey && utility.shouldLoad($anchor, options.blacklist)) {
                          // stopPropagation so that event doesn"t fire on parent containers.
                          event.stopPropagation();
                          event.preventDefault();
                          load(url);
                      }
                  },
  
                  /**
                   * Binds all events and inits functionality
                   *
                   * @param   {object}    event
                   * 
                   */
                  bindEventHandlers = function ($element) {
                      //@todo: Handle form submissions
                      $element.on("click", options.anchors, clickAnchor);
  
                      if (options.prefetch) {
                          $element.on("mouseover touchstart", options.anchors, hoverAnchor);
                      }
  
                  },
  
                  /** Used to restart css animations with a class */
                  toggleAnimationClass = function (classname) {
                      var classes = $container.addClass(classname).prop("class");
                      
                      $container.removeClass(classes);
                      
                      setTimeout(function(){
                          $container.addClass(classes);
                      },0);
  
                      $container.one("ss.onStartEnd ss.onProgressEnd ss.onEndEnd", function(){
                          $container.removeClass(classname);
                      });
                      
                  };
  
              /** Override defaults with options passed in */
              options = $.extend(defaults, options);
  
              /** Sets a default state */
              if(window.history.state === null) {
                  window.history.replaceState({ id: $container.prop("id") }, document.title, currentHref);
              }
  
              /** Stores the current page in cache variable */
              utility.storePageIn(cache, currentHref, document.documentElement.outerHTML);
  
              /** Bind all of the event handlers on the container, not anchors */
              utility.triggerAllAnimationEndEvent($container, "ss.onStartEnd ss.onProgressEnd ss.onEndEnd");
  
              /** Bind all of the event handlers on the container, not anchors */
              bindEventHandlers($container);
  
              /** Public methods */
              return {
                  href: currentHref,
                  cache: cache,
                  load: load,
                  fetch: fetch,
                  toggleAnimationClass: toggleAnimationClass
              };
          },
  
          /** Returns elements with SmoothState attached to it */
          declareSmoothState = function ( options ) {
              return this.each(function () {
                  // Checks to make sure the smoothState element has an id and isn"t already bound
                  if(this.id && !$.data(this, "smoothState")) {
                      // Makes public methods available via $("element").data("smoothState");
                      $.data(this, "smoothState", new SmoothState(this, options));
                  } else if (!this.id && consl) {
                      // Throw warning if in development mode
                      consl.warn("Every smoothState container needs an id but the following one does not have one:", this);
                  }
              });
          };
  
      /** Sets the popstate function */
      window.onpopstate = onPopState;
  
      /** Makes utility functions public for unit tests */
      $.smoothStateUtility = utility;
  
      /** Defines the smoothState plugin */
      $.fn.smoothState = declareSmoothState;
  
  })(jQuery, window, document);