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  YUI.add('history-hash', function (Y, NAME) {
  
  /**
   * Provides browser history management backed by
   * <code>window.location.hash</code>, as well as convenience methods for working
   * with the location hash and a synthetic <code>hashchange</code> event that
   * normalizes differences across browsers.
   *
   * @module history
   * @submodule history-hash
   * @since 3.2.0
   * @class HistoryHash
   * @extends HistoryBase
   * @constructor
   * @param {Object} config (optional) Configuration object. See the HistoryBase
   *   documentation for details.
   */
  
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  var HistoryBase = Y.HistoryBase,
      Lang        = Y.Lang,
      YArray      = Y.Array,
      YObject     = Y.Object,
      GlobalEnv   = YUI.namespace('Env.HistoryHash'),
  
      SRC_HASH    = 'hash',
  
      hashNotifiers,
      oldHash,
      oldUrl,
      win             = Y.config.win,
      useHistoryHTML5 = Y.config.useHistoryHTML5;
  
  _yuitest_coverline("build/history-hash/history-hash.js", 33);
  function HistoryHash() {
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  HistoryHash.superclass.constructor.apply(this, arguments);
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  Y.extend(HistoryHash, HistoryBase, {
      // -- Initialization -------------------------------------------------------
      _init: function (config) {
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          // If an initialState was provided, merge the bookmarked state into it
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  config = config || {};
  
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  this._initialState = config.initialState ?
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          // Subscribe to the synthetic hashchange event (defined below) to handle
          // changes.
          _yuitest_coverline("build/history-hash/history-hash.js", 51);
  Y.after('hashchange', Y.bind(this._afterHashChange, this), win);
  
          _yuitest_coverline("build/history-hash/history-hash.js", 53);
  HistoryHash.superclass._init.apply(this, arguments);
      },
  
      // -- Protected Methods ----------------------------------------------------
      _change: function (src, state, options) {
          // Stringify all values to ensure that comparisons don't fail after
          // they're coerced to strings in the location hash.
          _yuitest_coverfunc("build/history-hash/history-hash.js", "_change", 57);
  _yuitest_coverline("build/history-hash/history-hash.js", 60);
  YObject.each(state, function (value, key) {
              _yuitest_coverfunc("build/history-hash/history-hash.js", "(anonymous 2)", 60);
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              }
          });
  
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      },
  
      _storeState: function (src, newState) {
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          // Update the location hash with the changes, but only if the new hash
          // actually differs from the current hash (this avoids creating multiple
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          //
          // We always compare decoded hashes, since it's possible that the hash
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      },
  
      // -- Protected Event Handlers ---------------------------------------------
  
      /**
       * Handler for hashchange events.
       *
       * @method _afterHashChange
       * @param {Event} e
       * @protected
       */
      _afterHashChange: function (e) {
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  }, {
      // -- Public Static Properties ---------------------------------------------
      NAME: 'historyHash',
  
      /**
       * Constant used to identify state changes originating from
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       *
       * @property SRC_HASH
       * @type String
       * @static
       * @final
       */
      SRC_HASH: SRC_HASH,
  
      /**
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       * prefix is <code>!</code> and the hash fragment is set to
       * <code>#foo=bar&baz=quux</code>, the final hash fragment in the URL will
       * become <code>#!foo=bar&baz=quux</code>. This can be used to help make an
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       * <a href="http://code.google.com/web/ajaxcrawling/">http://code.google.com/web/ajaxcrawling/</a>.
       * </p>
       *
       * <p>
       * Note that this prefix applies to all HistoryHash instances. It's not
       * possible for individual instances to use their own prefixes since they
       * all operate on the same URL.
       * </p>
       *
       * @property hashPrefix
       * @type String
       * @default ''
       * @static
       */
      hashPrefix: '',
  
      // -- Protected Static Properties ------------------------------------------
  
      /**
       * Regular expression used to parse location hash/query strings.
       *
       * @property _REGEX_HASH
       * @type RegExp
       * @protected
       * @static
       * @final
       */
      _REGEX_HASH: /([^\?#&]+)=([^&]+)/g,
  
      // -- Public Static Methods ------------------------------------------------
  
      /**
       * Creates a location hash string from the specified object of key/value
       * pairs.
       *
       * @method createHash
       * @param {Object} params object of key/value parameter pairs
       * @return {String} location hash string
       * @static
       */
      createHash: function (params) {
          _yuitest_coverfunc("build/history-hash/history-hash.js", "createHash", 161);
  _yuitest_coverline("build/history-hash/history-hash.js", 162);
  var encode = HistoryHash.encode,
              hash   = [];
  
          _yuitest_coverline("build/history-hash/history-hash.js", 165);
  YObject.each(params, function (value, key) {
              _yuitest_coverfunc("build/history-hash/history-hash.js", "(anonymous 3)", 165);
  _yuitest_coverline("build/history-hash/history-hash.js", 166);
  if (Lang.isValue(value)) {
                  _yuitest_coverline("build/history-hash/history-hash.js", 167);
  hash.push(encode(key) + '=' + encode(value));
              }
          });
  
          _yuitest_coverline("build/history-hash/history-hash.js", 171);
  return hash.join('&');
      },
  
      /**
       * Wrapper around <code>decodeURIComponent()</code> that also converts +
       * chars into spaces.
       *
       * @method decode
       * @param {String} string string to decode
       * @return {String} decoded string
       * @static
       */
      decode: function (string) {
          _yuitest_coverfunc("build/history-hash/history-hash.js", "decode", 183);
  _yuitest_coverline("build/history-hash/history-hash.js", 184);
  return decodeURIComponent(string.replace(/\+/g, ' '));
      },
  
      /**
       * Wrapper around <code>encodeURIComponent()</code> that converts spaces to
       * + chars.
       *
       * @method encode
       * @param {String} string string to encode
       * @return {String} encoded string
       * @static
       */
      encode: function (string) {
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  return encodeURIComponent(string).replace(/%20/g, '+');
      },
  
      /**
       * Gets the raw (not decoded) current location hash, minus the preceding '#'
       * character and the hashPrefix (if one is set).
       *
       * @method getHash
       * @return {String} current location hash
       * @static
       */
      getHash: (Y.UA.gecko ? function () {
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          // encoding untouched, so we need to get the hash value from
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  var location = Y.getLocation(),
              matches  = /#(.*)$/.exec(location.href),
              hash     = matches && matches[1] || '',
              prefix   = HistoryHash.hashPrefix;
  
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  return prefix && hash.indexOf(prefix) === 0 ?
                      hash.replace(prefix, '') : hash;
      } : function () {
          _yuitest_coverfunc("build/history-hash/history-hash.js", "}", 221);
  _yuitest_coverline("build/history-hash/history-hash.js", 222);
  var location = Y.getLocation(),
              hash     = location.hash.substring(1),
              prefix   = HistoryHash.hashPrefix;
  
          // Slight code duplication here, but execution speed is of the essence
          // since getHash() is called every 50ms to poll for changes in browsers
          // that don't support native onhashchange. An additional function call
          // would add unnecessary overhead.
          _yuitest_coverline("build/history-hash/history-hash.js", 230);
  return prefix && hash.indexOf(prefix) === 0 ?
                      hash.replace(prefix, '') : hash;
      }),
  
      /**
       * Gets the current bookmarkable URL.
       *
       * @method getUrl
       * @return {String} current bookmarkable URL
       * @static
       */
      getUrl: function () {
          _yuitest_coverfunc("build/history-hash/history-hash.js", "getUrl", 241);
  _yuitest_coverline("build/history-hash/history-hash.js", 242);
  return location.href;
      },
  
      /**
       * Parses a location hash string into an object of key/value parameter
       * pairs. If <i>hash</i> is not specified, the current location hash will
       * be used.
       *
       * @method parseHash
       * @param {String} hash (optional) location hash string
       * @return {Object} object of parsed key/value parameter pairs
       * @static
       */
      parseHash: function (hash) {
          _yuitest_coverfunc("build/history-hash/history-hash.js", "parseHash", 255);
  _yuitest_coverline("build/history-hash/history-hash.js", 256);
  var decode = HistoryHash.decode,
              i,
              len,
              matches,
              param,
              params = {},
              prefix = HistoryHash.hashPrefix,
              prefixIndex;
  
          _yuitest_coverline("build/history-hash/history-hash.js", 265);
  hash = Lang.isValue(hash) ? hash : HistoryHash.getHash();
  
          _yuitest_coverline("build/history-hash/history-hash.js", 267);
  if (prefix) {
              _yuitest_coverline("build/history-hash/history-hash.js", 268);
  prefixIndex = hash.indexOf(prefix);
  
              _yuitest_coverline("build/history-hash/history-hash.js", 270);
  if (prefixIndex === 0 || (prefixIndex === 1 && hash.charAt(0) === '#')) {
                  _yuitest_coverline("build/history-hash/history-hash.js", 271);
  hash = hash.replace(prefix, '');
              }
          }
  
          _yuitest_coverline("build/history-hash/history-hash.js", 275);
  matches = hash.match(HistoryHash._REGEX_HASH) || [];
  
          _yuitest_coverline("build/history-hash/history-hash.js", 277);
  for (i = 0, len = matches.length; i < len; ++i) {
              _yuitest_coverline("build/history-hash/history-hash.js", 278);
  param = matches[i].split('=');
              _yuitest_coverline("build/history-hash/history-hash.js", 279);
  params[decode(param[0])] = decode(param[1]);
          }
  
          _yuitest_coverline("build/history-hash/history-hash.js", 282);
  return params;
      },
  
      /**
       * Replaces the browser's current location hash with the specified hash
       * and removes all forward navigation states, without creating a new browser
       * history entry. Automatically prepends the <code>hashPrefix</code> if one
       * is set.
       *
       * @method replaceHash
       * @param {String} hash new location hash
       * @static
       */
      replaceHash: function (hash) {
          _yuitest_coverfunc("build/history-hash/history-hash.js", "replaceHash", 295);
  _yuitest_coverline("build/history-hash/history-hash.js", 296);
  var location = Y.getLocation(),
              base     = location.href.replace(/#.*$/, '');
  
          _yuitest_coverline("build/history-hash/history-hash.js", 299);
  if (hash.charAt(0) === '#') {
              _yuitest_coverline("build/history-hash/history-hash.js", 300);
  hash = hash.substring(1);
          }
  
          _yuitest_coverline("build/history-hash/history-hash.js", 303);
  location.replace(base + '#' + (HistoryHash.hashPrefix || '') + hash);
      },
  
      /**
       * Sets the browser's location hash to the specified string. Automatically
       * prepends the <code>hashPrefix</code> if one is set.
       *
       * @method setHash
       * @param {String} hash new location hash
       * @static
       */
      setHash: function (hash) {
          _yuitest_coverfunc("build/history-hash/history-hash.js", "setHash", 314);
  _yuitest_coverline("build/history-hash/history-hash.js", 315);
  var location = Y.getLocation();
  
          _yuitest_coverline("build/history-hash/history-hash.js", 317);
  if (hash.charAt(0) === '#') {
              _yuitest_coverline("build/history-hash/history-hash.js", 318);
  hash = hash.substring(1);
          }
  
          _yuitest_coverline("build/history-hash/history-hash.js", 321);
  location.hash = (HistoryHash.hashPrefix || '') + hash;
      }
  });
  
  // -- Synthetic hashchange Event -----------------------------------------------
  
  // TODO: YUIDoc currently doesn't provide a good way to document synthetic DOM
  // events. For now, we're just documenting the hashchange event on the YUI
  // object, which is about the best we can do until enhancements are made to
  // YUIDoc.
  
  /**
  Synthetic <code>window.onhashchange</code> event that normalizes differences
  across browsers and provides support for browsers that don't natively support
  <code>onhashchange</code>.
  
  This event is provided by the <code>history-hash</code> module.
  
  @example
  
      YUI().use('history-hash', function (Y) {
        Y.on('hashchange', function (e) {
          // Handle hashchange events on the current window.
        }, Y.config.win);
      });
  
  @event hashchange
  @param {EventFacade} e Event facade with the following additional
    properties:
  
  <dl>
    <dt>oldHash</dt>
    <dd>
      Previous hash fragment value before the change.
    </dd>
  
    <dt>oldUrl</dt>
    <dd>
      Previous URL (including the hash fragment) before the change.
    </dd>
  
    <dt>newHash</dt>
    <dd>
      New hash fragment value after the change.
    </dd>
  
    <dt>newUrl</dt>
    <dd>
      New URL (including the hash fragment) after the change.
    </dd>
  </dl>
  @for YUI
  @since 3.2.0
  **/
  
  _yuitest_coverline("build/history-hash/history-hash.js", 376);
  hashNotifiers = GlobalEnv._notifiers;
  
  _yuitest_coverline("build/history-hash/history-hash.js", 378);
  if (!hashNotifiers) {
      _yuitest_coverline("build/history-hash/history-hash.js", 379);
  hashNotifiers = GlobalEnv._notifiers = [];
  }
  
  _yuitest_coverline("build/history-hash/history-hash.js", 382);
  Y.Event.define('hashchange', {
      on: function (node, subscriber, notifier) {
          // Ignore this subscription if the node is anything other than the
          // window or document body, since those are the only elements that
          // should support the hashchange event. Note that the body could also be
          // a frameset, but that's okay since framesets support hashchange too.
          _yuitest_coverfunc("build/history-hash/history-hash.js", "on", 383);
  _yuitest_coverline("build/history-hash/history-hash.js", 388);
  if (node.compareTo(win) || node.compareTo(Y.config.doc.body)) {
              _yuitest_coverline("build/history-hash/history-hash.js", 389);
  hashNotifiers.push(notifier);
          }
      },
  
      detach: function (node, subscriber, notifier) {
          _yuitest_coverfunc("build/history-hash/history-hash.js", "detach", 393);
  _yuitest_coverline("build/history-hash/history-hash.js", 394);
  var index = YArray.indexOf(hashNotifiers, notifier);
  
          _yuitest_coverline("build/history-hash/history-hash.js", 396);
  if (index !== -1) {
              _yuitest_coverline("build/history-hash/history-hash.js", 397);
  hashNotifiers.splice(index, 1);
          }
      }
  });
  
  _yuitest_coverline("build/history-hash/history-hash.js", 402);
  oldHash = HistoryHash.getHash();
  _yuitest_coverline("build/history-hash/history-hash.js", 403);
  oldUrl  = HistoryHash.getUrl();
  
  _yuitest_coverline("build/history-hash/history-hash.js", 405);
  if (HistoryBase.nativeHashChange) {
      // Wrap the browser's native hashchange event if there's not already a
      // global listener.
      _yuitest_coverline("build/history-hash/history-hash.js", 408);
  if (!GlobalEnv._hashHandle) {
          _yuitest_coverline("build/history-hash/history-hash.js", 409);
  GlobalEnv._hashHandle = Y.Event.attach('hashchange', function (e) {
              _yuitest_coverfunc("build/history-hash/history-hash.js", "(anonymous 5)", 409);
  _yuitest_coverline("build/history-hash/history-hash.js", 410);
  var newHash = HistoryHash.getHash(),
                  newUrl  = HistoryHash.getUrl();
  
              // Iterate over a copy of the hashNotifiers array since a subscriber
              // could detach during iteration and cause the array to be re-indexed.
              _yuitest_coverline("build/history-hash/history-hash.js", 415);
  YArray.each(hashNotifiers.concat(), function (notifier) {
                  _yuitest_coverfunc("build/history-hash/history-hash.js", "(anonymous 6)", 415);
  _yuitest_coverline("build/history-hash/history-hash.js", 416);
  notifier.fire({
                      _event : e,
                      oldHash: oldHash,
                      oldUrl : oldUrl,
                      newHash: newHash,
                      newUrl : newUrl
                  });
              });
  
              _yuitest_coverline("build/history-hash/history-hash.js", 425);
  oldHash = newHash;
              _yuitest_coverline("build/history-hash/history-hash.js", 426);
  oldUrl  = newUrl;
          }, win);
      }
  } else {
      // Begin polling for location hash changes if there's not already a global
      // poll running.
      _yuitest_coverline("build/history-hash/history-hash.js", 432);
  if (!GlobalEnv._hashPoll) {
          _yuitest_coverline("build/history-hash/history-hash.js", 433);
  GlobalEnv._hashPoll = Y.later(50, null, function () {
              _yuitest_coverfunc("build/history-hash/history-hash.js", "(anonymous 7)", 433);
  _yuitest_coverline("build/history-hash/history-hash.js", 434);
  var newHash = HistoryHash.getHash(),
                  facade, newUrl;
  
              _yuitest_coverline("build/history-hash/history-hash.js", 437);
  if (oldHash !== newHash) {
                  _yuitest_coverline("build/history-hash/history-hash.js", 438);
  newUrl = HistoryHash.getUrl();
  
                  _yuitest_coverline("build/history-hash/history-hash.js", 440);
  facade = {
                      oldHash: oldHash,
                      oldUrl : oldUrl,
                      newHash: newHash,
                      newUrl : newUrl
                  };
  
                  _yuitest_coverline("build/history-hash/history-hash.js", 447);
  oldHash = newHash;
                  _yuitest_coverline("build/history-hash/history-hash.js", 448);
  oldUrl  = newUrl;
  
                  _yuitest_coverline("build/history-hash/history-hash.js", 450);
  YArray.each(hashNotifiers.concat(), function (notifier) {
                      _yuitest_coverfunc("build/history-hash/history-hash.js", "(anonymous 8)", 450);
  _yuitest_coverline("build/history-hash/history-hash.js", 451);
  notifier.fire(facade);
                  });
              }
          }, null, true);
      }
  }
  
  _yuitest_coverline("build/history-hash/history-hash.js", 458);
  Y.HistoryHash = HistoryHash;
  
  // HistoryHash will never win over HistoryHTML5 unless useHistoryHTML5 is false.
  _yuitest_coverline("build/history-hash/history-hash.js", 461);
  if (useHistoryHTML5 === false || (!Y.History && useHistoryHTML5 !== true &&
          (!HistoryBase.html5 || !Y.HistoryHTML5))) {
      _yuitest_coverline("build/history-hash/history-hash.js", 463);
  Y.History = HistoryHash;
  }
  
  
  }, '@VERSION@', {"requires": ["event-synthetic", "history-base", "yui-later"]});
  