text: /**
   * State-based routing for AngularJS
   * @version v0.2.7-dev-2014-01-14
   * @link http://angular-ui.github.com/
   * @license MIT License, http://www.opensource.org/licenses/MIT
   */
  
  /* commonjs package manager support (eg componentjs) */
  if (typeof module !== "undefined" && typeof exports !== "undefined" && module.exports === exports){
    module.exports = 'ui.router';
  }
  
  (function (window, angular, undefined) {
  /*jshint globalstrict:true*/
  /*global angular:false*/
  'use strict';
  
  var isDefined = angular.isDefined,
      isFunction = angular.isFunction,
      isString = angular.isString,
      isObject = angular.isObject,
      isArray = angular.isArray,
      forEach = angular.forEach,
      extend = angular.extend,
      copy = angular.copy;
  
  function inherit(parent, extra) {
    return extend(new (extend(function() {}, { prototype: parent }))(), extra);
  }
  
  function merge(dst) {
    forEach(arguments, function(obj) {
      if (obj !== dst) {
        forEach(obj, function(value, key) {
          if (!dst.hasOwnProperty(key)) dst[key] = value;
        });
      }
    });
    return dst;
  }
  
  /**
   * Finds the common ancestor path between two states.
   *
   * @param {Object} first The first state.
   * @param {Object} second The second state.
   * @return {Array} Returns an array of state names in descending order, not including the root.
   */
  function ancestors(first, second) {
    var path = [];
  
    for (var n in first.path) {
      if (first.path[n] !== second.path[n]) break;
      path.push(first.path[n]);
    }
    return path;
  }
  
  /**
   * IE8-safe wrapper for `Object.keys()`.
   *
   * @param {Object} object A JavaScript object.
   * @return {Array} Returns the keys of the object as an array.
   */
  function keys(object) {
    if (Object.keys) {
      return Object.keys(object);
    }
    var result = [];
  
    angular.forEach(object, function(val, key) {
      result.push(key);
    });
    return result;
  }
  
  /**
   * IE8-safe wrapper for `Array.prototype.indexOf()`.
   *
   * @param {Array} array A JavaScript array.
   * @param {*} value A value to search the array for.
   * @return {Number} Returns the array index value of `value`, or `-1` if not present.
   */
  function arraySearch(array, value) {
    if (Array.prototype.indexOf) {
      return array.indexOf(value, Number(arguments[2]) || 0);
    }
    var len = array.length >>> 0, from = Number(arguments[2]) || 0;
    from = (from < 0) ? Math.ceil(from) : Math.floor(from);
  
    if (from < 0) from += len;
  
    for (; from < len; from++) {
      if (from in array && array[from] === value) return from;
    }
    return -1;
  }
  
  /**
   * Merges a set of parameters with all parameters inherited between the common parents of the
   * current state and a given destination state.
   *
   * @param {Object} currentParams The value of the current state parameters ($stateParams).
   * @param {Object} newParams The set of parameters which will be composited with inherited params.
   * @param {Object} $current Internal definition of object representing the current state.
   * @param {Object} $to Internal definition of object representing state to transition to.
   */
  function inheritParams(currentParams, newParams, $current, $to) {
    var parents = ancestors($current, $to), parentParams, inherited = {}, inheritList = [];
  
    for (var i in parents) {
      if (!parents[i].params || !parents[i].params.length) continue;
      parentParams = parents[i].params;
  
      for (var j in parentParams) {
        if (arraySearch(inheritList, parentParams[j]) >= 0) continue;
        inheritList.push(parentParams[j]);
        inherited[parentParams[j]] = currentParams[parentParams[j]];
      }
    }
    return extend({}, inherited, newParams);
  }
  
  /**
   * Normalizes a set of values to string or `null`, filtering them by a list of keys.
   *
   * @param {Array} keys The list of keys to normalize/return.
   * @param {Object} values An object hash of values to normalize.
   * @return {Object} Returns an object hash of normalized string values.
   */
  function normalize(keys, values) {
    var normalized = {};
  
    forEach(keys, function (name) {
      var value = values[name];
      normalized[name] = (value != null) ? String(value) : null;
    });
    return normalized;
  }
  
  /**
   * Performs a non-strict comparison of the subset of two objects, defined by a list of keys.
   *
   * @param {Object} a The first object.
   * @param {Object} b The second object.
   * @param {Array} keys The list of keys within each object to compare. If the list is empty or not specified,
   *                     it defaults to the list of keys in `a`.
   * @return {Boolean} Returns `true` if the keys match, otherwise `false`.
   */
  function equalForKeys(a, b, keys) {
    if (!keys) {
      keys = [];
      for (var n in a) keys.push(n); // Used instead of Object.keys() for IE8 compatibility
    }
  
    for (var i=0; i<keys.length; i++) {
      var k = keys[i];
      if (a[k] != b[k]) return false; // Not '===', values aren't necessarily normalized
    }
    return true;
  }
  
  /**
   * Returns the subset of an object, based on a list of keys.
   *
   * @param {Array} keys
   * @param {Object} values
   * @return {Boolean} Returns a subset of `values`.
   */
  function filterByKeys(keys, values) {
    var filtered = {};
  
    forEach(keys, function (name) {
      filtered[name] = values[name];
    });
    return filtered;
  }
  
  /**
   * @ngdoc overview
   * @name ui.router.util
   *
   * @description
   *
   */
  angular.module('ui.router.util', ['ng']);
  
  /**
   * @ngdoc overview
   * @name ui.router.router
   * 
   * @requires ui.router.util
   *
   * @description
   *
   */
  angular.module('ui.router.router', ['ui.router.util']);
  
  /**
   * @ngdoc overview
   * @name ui.router.router
   * 
   * @requires ui.router.router
   * @requires ui.router.util
   *
   * @description
   *
   */
  angular.module('ui.router.state', ['ui.router.router', 'ui.router.util']);
  
  /**
   * @ngdoc overview
   * @name ui.router
   *
   * @requires ui.router.state
   *
   * @description
   *
   */
  angular.module('ui.router', ['ui.router.state']);
  /**
   * @ngdoc overview
   * @name ui.router.compat
   *
   * @requires ui.router
   *
   * @description
   *
   */
  angular.module('ui.router.compat', ['ui.router']);
  
  /**
   * @ngdoc object
   * @name ui.router.util.$resolve
   *
   * @requires $q
   * @requires $injector
   *
   * @description
   * Manages resolution of (acyclic) graphs of promises.
   */
  $Resolve.$inject = ['$q', '$injector'];
  function $Resolve(  $q,    $injector) {
    
    var VISIT_IN_PROGRESS = 1,
        VISIT_DONE = 2,
        NOTHING = {},
        NO_DEPENDENCIES = [],
        NO_LOCALS = NOTHING,
        NO_PARENT = extend($q.when(NOTHING), { $$promises: NOTHING, $$values: NOTHING });
    
  
    /**
     * @ngdoc function
     * @name ui.router.util.$resolve#study
     * @methodOf ui.router.util.$resolve
     *
     * @description
     * Studies a set of invocables that are likely to be used multiple times.
     * <pre>
     * $resolve.study(invocables)(locals, parent, self)
     * </pre>
     * is equivalent to
     * <pre>
     * $resolve.resolve(invocables, locals, parent, self)
     * </pre>
     * but the former is more efficient (in fact `resolve` just calls `study` 
     * internally).
     *
     * @param {object} invocables Invocable objects
     * @return {function} a function to pass in locals, parent and self
     */
    this.study = function (invocables) {
      if (!isObject(invocables)) throw new Error("'invocables' must be an object");
      
      // Perform a topological sort of invocables to build an ordered plan
      var plan = [], cycle = [], visited = {};
      function visit(value, key) {
        if (visited[key] === VISIT_DONE) return;
        
        cycle.push(key);
        if (visited[key] === VISIT_IN_PROGRESS) {
          cycle.splice(0, cycle.indexOf(key));
          throw new Error("Cyclic dependency: " + cycle.join(" -> "));
        }
        visited[key] = VISIT_IN_PROGRESS;
        
        if (isString(value)) {
          plan.push(key, [ function() { return $injector.get(value); }], NO_DEPENDENCIES);
        } else {
          var params = $injector.annotate(value);
          forEach(params, function (param) {
            if (param !== key && invocables.hasOwnProperty(param)) visit(invocables[param], param);
          });
          plan.push(key, value, params);
        }
        
        cycle.pop();
        visited[key] = VISIT_DONE;
      }
      forEach(invocables, visit);
      invocables = cycle = visited = null; // plan is all that's required
      
      function isResolve(value) {
        return isObject(value) && value.then && value.$$promises;
      }
      
      return function (locals, parent, self) {
        if (isResolve(locals) && self === undefined) {
          self = parent; parent = locals; locals = null;
        }
        if (!locals) locals = NO_LOCALS;
        else if (!isObject(locals)) {
          throw new Error("'locals' must be an object");
        }       
        if (!parent) parent = NO_PARENT;
        else if (!isResolve(parent)) {
          throw new Error("'parent' must be a promise returned by $resolve.resolve()");
        }
        
        // To complete the overall resolution, we have to wait for the parent
        // promise and for the promise for each invokable in our plan.
        var resolution = $q.defer(),
            result = resolution.promise,
            promises = result.$$promises = {},
            values = extend({}, locals),
            wait = 1 + plan.length/3,
            merged = false;
            
        function done() {
          // Merge parent values we haven't got yet and publish our own $$values
          if (!--wait) {
            if (!merged) merge(values, parent.$$values); 
            result.$$values = values;
            result.$$promises = true; // keep for isResolve()
            resolution.resolve(values);
          }
        }
        
        function fail(reason) {
          result.$$failure = reason;
          resolution.reject(reason);
        }
        
        // Short-circuit if parent has already failed
        if (isDefined(parent.$$failure)) {
          fail(parent.$$failure);
          return result;
        }
        
        // Merge parent values if the parent has already resolved, or merge
        // parent promises and wait if the parent resolve is still in progress.
        if (parent.$$values) {
          merged = merge(values, parent.$$values);
          done();
        } else {
          extend(promises, parent.$$promises);
          parent.then(done, fail);
        }
        
        // Process each invocable in the plan, but ignore any where a local of the same name exists.
        for (var i=0, ii=plan.length; i<ii; i+=3) {
          if (locals.hasOwnProperty(plan[i])) done();
          else invoke(plan[i], plan[i+1], plan[i+2]);
        }
        
        function invoke(key, invocable, params) {
          // Create a deferred for this invocation. Failures will propagate to the resolution as well.
          var invocation = $q.defer(), waitParams = 0;
          function onfailure(reason) {
            invocation.reject(reason);
            fail(reason);
          }
          // Wait for any parameter that we have a promise for (either from parent or from this
          // resolve; in that case study() will have made sure it's ordered before us in the plan).
          forEach(params, function (dep) {
            if (promises.hasOwnProperty(dep) && !locals.hasOwnProperty(dep)) {
              waitParams++;
              promises[dep].then(function (result) {
                values[dep] = result;
                if (!(--waitParams)) proceed();
              }, onfailure);
            }
          });
          if (!waitParams) proceed();
          function proceed() {
            if (isDefined(result.$$failure)) return;
            try {
              invocation.resolve($injector.invoke(invocable, self, values));
              invocation.promise.then(function (result) {
                values[key] = result;
                done();
              }, onfailure);
            } catch (e) {
              onfailure(e);
            }
          }
          // Publish promise synchronously; invocations further down in the plan may depend on it.
          promises[key] = invocation.promise;
        }
        
        return result;
      };
    };
    
    /**
     * @ngdoc function
     * @name ui.router.util.$resolve#resolve
     * @methodOf ui.router.util.$resolve
     *
     * @description
     * Resolves a set of invocables. An invocable is a function to be invoked via 
     * `$injector.invoke()`, and can have an arbitrary number of dependencies. 
     * An invocable can either return a value directly,
     * or a `$q` promise. If a promise is returned it will be resolved and the 
     * resulting value will be used instead. Dependencies of invocables are resolved 
     * (in this order of precedence)
     *
     * - from the specified `locals`
     * - from another invocable that is part of this `$resolve` call
     * - from an invocable that is inherited from a `parent` call to `$resolve` 
     *   (or recursively
     * - from any ancestor `$resolve` of that parent).
     *
     * The return value of `$resolve` is a promise for an object that contains 
     * (in this order of precedence)
     *
     * - any `locals` (if specified)
     * - the resolved return values of all injectables
     * - any values inherited from a `parent` call to `$resolve` (if specified)
     *
     * The promise will resolve after the `parent` promise (if any) and all promises 
     * returned by injectables have been resolved. If any invocable 
     * (or `$injector.invoke`) throws an exception, or if a promise returned by an 
     * invocable is rejected, the `$resolve` promise is immediately rejected with the 
     * same error. A rejection of a `parent` promise (if specified) will likewise be 
     * propagated immediately. Once the `$resolve` promise has been rejected, no 
     * further invocables will be called.
     * 
     * Cyclic dependencies between invocables are not permitted and will caues `$resolve`
     * to throw an error. As a special case, an injectable can depend on a parameter 
     * with the same name as the injectable, which will be fulfilled from the `parent` 
     * injectable of the same name. This allows inherited values to be decorated. 
     * Note that in this case any other injectable in the same `$resolve` with the same
     * dependency would see the decorated value, not the inherited value.
     *
     * Note that missing dependencies -- unlike cyclic dependencies -- will cause an 
     * (asynchronous) rejection of the `$resolve` promise rather than a (synchronous) 
     * exception.
     *
     * Invocables are invoked eagerly as soon as all dependencies are available. 
     * This is true even for dependencies inherited from a `parent` call to `$resolve`.
     *
     * As a special case, an invocable can be a string, in which case it is taken to 
     * be a service name to be passed to `$injector.get()`. This is supported primarily 
     * for backwards-compatibility with the `resolve` property of `$routeProvider` 
     * routes.
     *
     * @param {object} invocables functions to invoke or 
     * `$injector` services to fetch.
     * @param {object} locals  values to make available to the injectables
     * @param {object} parent  a promise returned by another call to `$resolve`.
     * @param {object} self  the `this` for the invoked methods
     * @return {object} Promise for an object that contains the resolved return value
     * of all invocables, as well as any inherited and local values.
     */
    this.resolve = function (invocables, locals, parent, self) {
      return this.study(invocables)(locals, parent, self);
    };
  }
  
  angular.module('ui.router.util').service('$resolve', $Resolve);
  
  
  /**
   * @ngdoc object
   * @name ui.router.util.$templateFactory
   *
   * @requires $http
   * @requires $templateCache
   * @requires $injector
   *
   * @description
   * Service. Manages loading of templates.
   */
  $TemplateFactory.$inject = ['$http', '$templateCache', '$injector'];
  function $TemplateFactory(  $http,   $templateCache,   $injector) {
  
    /**
     * @ngdoc function
     * @name ui.router.util.$templateFactory#fromConfig
     * @methodOf ui.router.util.$templateFactory
     *
     * @description
     * Creates a template from a configuration object. 
     *
     * @param {object} config Configuration object for which to load a template. 
     * The following properties are search in the specified order, and the first one 
     * that is defined is used to create the template:
     *
     * @param {string|object} config.template html string template or function to 
     * load via {@link ui.router.util.$templateFactory#fromString fromString}.
     * @param {string|object} config.templateUrl url to load or a function returning 
     * the url to load via {@link ui.router.util.$templateFactory#fromUrl fromUrl}.
     * @param {Function} config.templateProvider function to invoke via 
     * {@link ui.router.util.$templateFactory#fromProvider fromProvider}.
     * @param {object} params  Parameters to pass to the template function.
     * @param {object} locals Locals to pass to `invoke` if the template is loaded 
     * via a `templateProvider`. Defaults to `{ params: params }`.
     *
     * @return {string|object}  The template html as a string, or a promise for 
     * that string,or `null` if no template is configured.
     */
    this.fromConfig = function (config, params, locals) {
      return (
        isDefined(config.template) ? this.fromString(config.template, params) :
        isDefined(config.templateUrl) ? this.fromUrl(config.templateUrl, params) :
        isDefined(config.templateProvider) ? this.fromProvider(config.templateProvider, params, locals) :
        null
      );
    };
  
    /**
     * @ngdoc function
     * @name ui.router.util.$templateFactory#fromString
     * @methodOf ui.router.util.$templateFactory
     *
     * @description
     * Creates a template from a string or a function returning a string.
     *
     * @param {string|object} template html template as a string or function that 
     * returns an html template as a string.
     * @param {object} params Parameters to pass to the template function.
     *
     * @return {string|object} The template html as a string, or a promise for that 
     * string.
     */
    this.fromString = function (template, params) {
      return isFunction(template) ? template(params) : template;
    };
  
    /**
     * @ngdoc function
     * @name ui.router.util.$templateFactory#fromUrl
     * @methodOf ui.router.util.$templateFactory
     * 
     * @description
     * Loads a template from the a URL via `$http` and `$templateCache`.
     *
     * @param {string|Function} url url of the template to load, or a function 
     * that returns a url.
     * @param {Object} params Parameters to pass to the url function.
     * @return {string|Promise.<string>} The template html as a string, or a promise 
     * for that string.
     */
    this.fromUrl = function (url, params) {
      if (isFunction(url)) url = url(params);
      if (url == null) return null;
      else return $http
          .get(url, { cache: $templateCache })
          .then(function(response) { return response.data; });
    };
  
    /**
     * @ngdoc function
     * @name ui.router.util.$templateFactory#fromUrl
     * @methodOf ui.router.util.$templateFactory
     *
     * @description
     * Creates a template by invoking an injectable provider function.
     *
     * @param {Function} provider Function to invoke via `$injector.invoke`
     * @param {Object} params Parameters for the template.
     * @param {Object} locals Locals to pass to `invoke`. Defaults to 
     * `{ params: params }`.
     * @return {string|Promise.<string>} The template html as a string, or a promise 
     * for that string.
     */
    this.fromProvider = function (provider, params, locals) {
      return $injector.invoke(provider, null, locals || { params: params });
    };
  }
  
  angular.module('ui.router.util').service('$templateFactory', $TemplateFactory);
  
  /**
   * Matches URLs against patterns and extracts named parameters from the path or the search
   * part of the URL. A URL pattern consists of a path pattern, optionally followed by '?' and a list
   * of search parameters. Multiple search parameter names are separated by '&'. Search parameters
   * do not influence whether or not a URL is matched, but their values are passed through into
   * the matched parameters returned by {@link UrlMatcher#exec exec}.
   * 
   * Path parameter placeholders can be specified using simple colon/catch-all syntax or curly brace
   * syntax, which optionally allows a regular expression for the parameter to be specified:
   *
   * * ':' name - colon placeholder
   * * '*' name - catch-all placeholder
   * * '{' name '}' - curly placeholder
   * * '{' name ':' regexp '}' - curly placeholder with regexp. Should the regexp itself contain
   *   curly braces, they must be in matched pairs or escaped with a backslash.
   *
   * Parameter names may contain only word characters (latin letters, digits, and underscore) and
   * must be unique within the pattern (across both path and search parameters). For colon 
   * placeholders or curly placeholders without an explicit regexp, a path parameter matches any
   * number of characters other than '/'. For catch-all placeholders the path parameter matches
   * any number of characters.
   * 
   * ### Examples
   * 
   * * '/hello/' - Matches only if the path is exactly '/hello/'. There is no special treatment for
   *   trailing slashes, and patterns have to match the entire path, not just a prefix.
   * * '/user/:id' - Matches '/user/bob' or '/user/1234!!!' or even '/user/' but not '/user' or
   *   '/user/bob/details'. The second path segment will be captured as the parameter 'id'.
   * * '/user/{id}' - Same as the previous example, but using curly brace syntax.
   * * '/user/{id:[^/]*}' - Same as the previous example.
   * * '/user/{id:[0-9a-fA-F]{1,8}}' - Similar to the previous example, but only matches if the id
   *   parameter consists of 1 to 8 hex digits.
   * * '/files/{path:.*}' - Matches any URL starting with '/files/' and captures the rest of the
   *   path into the parameter 'path'.
   * * '/files/*path' - ditto.
   *
   * @constructor
   * @param {string} pattern  the pattern to compile into a matcher.
   *
   * @property {string} prefix  A static prefix of this pattern. The matcher guarantees that any
   *   URL matching this matcher (i.e. any string for which {@link UrlMatcher#exec exec()} returns
   *   non-null) will start with this prefix.
   */
  function UrlMatcher(pattern) {
  
    // Find all placeholders and create a compiled pattern, using either classic or curly syntax:
    //   '*' name
    //   ':' name
    //   '{' name '}'
    //   '{' name ':' regexp '}'
    // The regular expression is somewhat complicated due to the need to allow curly braces
    // inside the regular expression. The placeholder regexp breaks down as follows:
    //    ([:*])(\w+)               classic placeholder ($1 / $2)
    //    \{(\w+)(?:\:( ... ))?\}   curly brace placeholder ($3) with optional regexp ... ($4)
    //    (?: ... | ... | ... )+    the regexp consists of any number of atoms, an atom being either
    //    [^{}\\]+                  - anything other than curly braces or backslash
    //    \\.                       - a backslash escape
    //    \{(?:[^{}\\]+|\\.)*\}     - a matched set of curly braces containing other atoms
    var placeholder = /([:*])(\w+)|\{(\w+)(?:\:((?:[^{}\\]+|\\.|\{(?:[^{}\\]+|\\.)*\})+))?\}/g,
        names = {}, compiled = '^', last = 0, m,
        segments = this.segments = [],
        params = this.params = [];
  
    function addParameter(id) {
      if (!/^\w+(-+\w+)*$/.test(id)) throw new Error("Invalid parameter name '" + id + "' in pattern '" + pattern + "'");
      if (names[id]) throw new Error("Duplicate parameter name '" + id + "' in pattern '" + pattern + "'");
      names[id] = true;
      params.push(id);
    }
  
    function quoteRegExp(string) {
      return string.replace(/[\\\[\]\^$*+?.()|{}]/g, "\\$&");
    }
  
    this.source = pattern;
  
    // Split into static segments separated by path parameter placeholders.
    // The number of segments is always 1 more than the number of parameters.
    var id, regexp, segment;
    while ((m = placeholder.exec(pattern))) {
      id = m[2] || m[3]; // IE[78] returns '' for unmatched groups instead of null
      regexp = m[4] || (m[1] == '*' ? '.*' : '[^/]*');
      segment = pattern.substring(last, m.index);
      if (segment.indexOf('?') >= 0) break; // we're into the search part
      compiled += quoteRegExp(segment) + '(' + regexp + ')';
      addParameter(id);
      segments.push(segment);
      last = placeholder.lastIndex;
    }
    segment = pattern.substring(last);
  
    // Find any search parameter names and remove them from the last segment
    var i = segment.indexOf('?');
    if (i >= 0) {
      var search = this.sourceSearch = segment.substring(i);
      segment = segment.substring(0, i);
      this.sourcePath = pattern.substring(0, last+i);
  
      // Allow parameters to be separated by '?' as well as '&' to make concat() easier
      forEach(search.substring(1).split(/[&?]/), addParameter);
    } else {
      this.sourcePath = pattern;
      this.sourceSearch = '';
    }
  
    compiled += quoteRegExp(segment) + '$';
    segments.push(segment);
    this.regexp = new RegExp(compiled);
    this.prefix = segments[0];
  }
  
  /**
   * Returns a new matcher for a pattern constructed by appending the path part and adding the
   * search parameters of the specified pattern to this pattern. The current pattern is not
   * modified. This can be understood as creating a pattern for URLs that are relative to (or
   * suffixes of) the current pattern.
   *
   * ### Example
   * The following two matchers are equivalent:
   * ```
   * new UrlMatcher('/user/{id}?q').concat('/details?date');
   * new UrlMatcher('/user/{id}/details?q&date');
   * ```
   *
   * @param {string} pattern  The pattern to append.
   * @return {UrlMatcher}  A matcher for the concatenated pattern.
   */
  UrlMatcher.prototype.concat = function (pattern) {
    // Because order of search parameters is irrelevant, we can add our own search
    // parameters to the end of the new pattern. Parse the new pattern by itself
    // and then join the bits together, but it's much easier to do this on a string level.
    return new UrlMatcher(this.sourcePath + pattern + this.sourceSearch);
  };
  
  UrlMatcher.prototype.toString = function () {
    return this.source;
  };
  
  /**
   * Tests the specified path against this matcher, and returns an object containing the captured
   * parameter values, or null if the path does not match. The returned object contains the values
   * of any search parameters that are mentioned in the pattern, but their value may be null if
   * they are not present in `searchParams`. This means that search parameters are always treated
   * as optional.
   *
   * ### Example
   * ```
   * new UrlMatcher('/user/{id}?q&r').exec('/user/bob', { x:'1', q:'hello' });
   * // returns { id:'bob', q:'hello', r:null }
   * ```
   *
   * @param {string} path  The URL path to match, e.g. `$location.path()`.
   * @param {Object} searchParams  URL search parameters, e.g. `$location.search()`.
   * @return {Object}  The captured parameter values.
   */
  UrlMatcher.prototype.exec = function (path, searchParams) {
    var m = this.regexp.exec(path);
    if (!m) return null;
  
    var params = this.params, nTotal = params.length,
      nPath = this.segments.length-1,
      values = {}, i;
  
    if (nPath !== m.length - 1) throw new Error("Unbalanced capture group in route '" + this.source + "'");
  
    for (i=0; i<nPath; i++) values[params[i]] = m[i+1];
    for (/**/; i<nTotal; i++) values[params[i]] = searchParams[params[i]];
  
    return values;
  };
  
  /**
   * Returns the names of all path and search parameters of this pattern in an unspecified order.
   * @return {Array.<string>}  An array of parameter names. Must be treated as read-only. If the
   *    pattern has no parameters, an empty array is returned.
   */
  UrlMatcher.prototype.parameters = function () {
    return this.params;
  };
  
  /**
   * Creates a URL that matches this pattern by substituting the specified values
   * for the path and search parameters. Null values for path parameters are
   * treated as empty strings.
   *
   * ### Example
   * ```
   * new UrlMatcher('/user/{id}?q').format({ id:'bob', q:'yes' });
   * // returns '/user/bob?q=yes'
   * ```
   *
   * @param {Object} values  the values to substitute for the parameters in this pattern.
   * @return {string}  the formatted URL (path and optionally search part).
   */
  UrlMatcher.prototype.format = function (values) {
    var segments = this.segments, params = this.params;
    if (!values) return segments.join('');
  
    var nPath = segments.length-1, nTotal = params.length,
      result = segments[0], i, search, value;
  
    for (i=0; i<nPath; i++) {
      value = values[params[i]];
      // TODO: Maybe we should throw on null here? It's not really good style to use '' and null interchangeabley
      if (value != null) result += encodeURIComponent(value);
      result += segments[i+1];
    }
    for (/**/; i<nTotal; i++) {
      value = values[params[i]];
      if (value != null) {
        result += (search ? '&' : '?') + params[i] + '=' + encodeURIComponent(value);
        search = true;
      }
    }
  
    return result;
  };
  
  /**
   * Service. Factory for {@link UrlMatcher} instances. The factory is also available to providers
   * under the name `$urlMatcherFactoryProvider`.
   * @constructor
   * @name $urlMatcherFactory
   */
  function $UrlMatcherFactory() {
    /**
     * Creates a {@link UrlMatcher} for the specified pattern.
     * @function
     * @name $urlMatcherFactory#compile
     * @methodOf $urlMatcherFactory
     * @param {string} pattern  The URL pattern.
     * @return {UrlMatcher}  The UrlMatcher.
     */
    this.compile = function (pattern) {
      return new UrlMatcher(pattern);
    };
  
    /**
     * Returns true if the specified object is a UrlMatcher, or false otherwise.
     * @function
     * @name $urlMatcherFactory#isMatcher
     * @methodOf $urlMatcherFactory
     * @param {Object} o
     * @return {boolean}
     */
    this.isMatcher = function (o) {
      return isObject(o) && isFunction(o.exec) && isFunction(o.format) && isFunction(o.concat);
    };
  
    this.$get = function () {
      return this;
    };
  }
  
  // Register as a provider so it's available to other providers
  angular.module('ui.router.util').provider('$urlMatcherFactory', $UrlMatcherFactory);
  
  /**
   * @ngdoc object
   * @name ui.router.router.$urlRouterProvider
   *
   * @requires ui.router.util.$urlMatcherFactoryProvider
   *
   * @description
   * `$urlRouterProvider` has the responsibility of watching `$location`. 
   * When `$location` changes it runs through a list of rules one by one until a 
   * match is found. `$urlRouterProvider` is used behind the scenes anytime you specify 
   * a url in a state configuration. All urls are compiled into a UrlMatcher object.
   *
   * There are several methods on `$urlRouterProvider` that make it useful to use directly
   * in your module config.
   */
  $UrlRouterProvider.$inject = ['$urlMatcherFactoryProvider'];
  function $UrlRouterProvider(  $urlMatcherFactory) {
    var rules = [], 
        otherwise = null;
  
    // Returns a string that is a prefix of all strings matching the RegExp
    function regExpPrefix(re) {
      var prefix = /^\^((?:\\[^a-zA-Z0-9]|[^\\\[\]\^$*+?.()|{}]+)*)/.exec(re.source);
      return (prefix != null) ? prefix[1].replace(/\\(.)/g, "$1") : '';
    }
  
    // Interpolates matched values into a String.replace()-style pattern
    function interpolate(pattern, match) {
      return pattern.replace(/\$(\$|\d{1,2})/, function (m, what) {
        return match[what === '$' ? 0 : Number(what)];
      });
    }
  
    /**
     * @ngdoc function
     * @name ui.router.router.$urlRouterProvider#rule
     * @methodOf ui.router.router.$urlRouterProvider
     *
     * @description
     * Defines rules that are used by `$urlRouterProvider to find matches for
     * specific URLs.
     *
     * @example
     * <pre>
     * var app = angular.module('app', ['ui.router.router']);
     *
     * app.config(function ($urlRouterProvider) {
     *   // Here's an example of how you might allow case insensitive urls
     *   $urlRouterProvider.rule(function ($injector, $location) {
     *     var path = $location.path(),
     *         normalized = path.toLowerCase();
     *
     *     if (path !== normalized) {
     *       return normalized;
     *     }
     *   });
     * });
     * </pre>
     *
     * @param {object} rule Handler function that takes `$injector` and `$location`
     * services as arguments. You can use them to return a valid path as a string.
     *
     * @return {object} $urlRouterProvider - $urlRouterProvider instance
     */
    this.rule =
      function (rule) {
        if (!isFunction(rule)) throw new Error("'rule' must be a function");
        rules.push(rule);
        return this;
      };
  
    /**
     * @ngdoc object
     * @name ui.router.router.$urlRouterProvider#otherwise
     * @methodOf ui.router.router.$urlRouterProvider
     *
     * @description
     * Defines a path that is used when an invalied route is requested.
     *
     * @example
     * <pre>
     * var app = angular.module('app', ['ui.router.router']);
     *
     * app.config(function ($urlRouterProvider) {
     *   // if the path doesn't match any of the urls you configured
     *   // otherwise will take care of routing the user to the
     *   // specified url
     *   $urlRouterProvider.otherwise('/index');
     *
     *   // Example of using function rule as param
     *   $urlRouterProvider.otherwise(function ($injector, $location) {
     *     ...
     *   });
     * });
     * </pre>
     *
     * @param {string|object} rule The url path you want to redirect to or a function 
     * rule that returns the url path. The function version is passed two params: 
     * `$injector` and `$location` services.
     *
     * @return {object} $urlRouterProvider - $urlRouterProvider instance
     */
    this.otherwise =
      function (rule) {
        if (isString(rule)) {
          var redirect = rule;
          rule = function () { return redirect; };
        }
        else if (!isFunction(rule)) throw new Error("'rule' must be a function");
        otherwise = rule;
        return this;
      };
  
  
    function handleIfMatch($injector, handler, match) {
      if (!match) return false;
      var result = $injector.invoke(handler, handler, { $match: match });
      return isDefined(result) ? result : true;
    }
  
    /**
     * @ngdoc function
     * @name ui.router.router.$urlRouterProvider#when
     * @methodOf ui.router.router.$urlRouterProvider
     *
     * @description
     * Registers a handler for a given url matching. if handle is a string, it is
     * treated as a redirect, and is interpolated according to the syyntax of match
     * (i.e. like String.replace() for RegExp, or like a UrlMatcher pattern otherwise).
     *
     * If the handler is a function, it is injectable. It gets invoked if `$location`
     * matches. You have the option of inject the match object as `$match`.
     *
     * The handler can return
     *
     * - **falsy** to indicate that the rule didn't match after all, then `$urlRouter`
     *   will continue trying to find another one that matches.
     * - **string** which is treated as a redirect and passed to `$location.url()`
     * - **void** or any **truthy** value tells `$urlRouter` that the url was handled.
     *
     * @example
     * <pre>
     * var app = angular.module('app', ['ui.router.router']);
     *
     * app.config(function ($urlRouterProvider) {
     *   $urlRouterProvider.when($state.url, function ($match, $stateParams) {
     *     if ($state.$current.navigable !== state ||
     *         !equalForKeys($match, $stateParams) {
     *      $state.transitionTo(state, $match, false);
     *     }
     *   });
     * });
     * </pre>
     *
     * @param {string|object} what The incoming path that you want to redirect.
     * @param {string|object} handler The path you want to redirect your user to.
     */
    this.when =
      function (what, handler) {
        var redirect, handlerIsString = isString(handler);
        if (isString(what)) what = $urlMatcherFactory.compile(what);
  
        if (!handlerIsString && !isFunction(handler) && !isArray(handler))
          throw new Error("invalid 'handler' in when()");
  
        var strategies = {
          matcher: function (what, handler) {
            if (handlerIsString) {
              redirect = $urlMatcherFactory.compile(handler);
              handler = ['$match', function ($match) { return redirect.format($match); }];
            }
            return extend(function ($injector, $location) {
              return handleIfMatch($injector, handler, what.exec($location.path(), $location.search()));
            }, {
              prefix: isString(what.prefix) ? what.prefix : ''
            });
          },
          regex: function (what, handler) {
            if (what.global || what.sticky) throw new Error("when() RegExp must not be global or sticky");
  
            if (handlerIsString) {
              redirect = handler;
              handler = ['$match', function ($match) { return interpolate(redirect, $match); }];
            }
            return extend(function ($injector, $location) {
              return handleIfMatch($injector, handler, what.exec($location.path()));
            }, {
              prefix: regExpPrefix(what)
            });
          }
        };
  
        var check = { matcher: $urlMatcherFactory.isMatcher(what), regex: what instanceof RegExp };
  
        for (var n in check) {
          if (check[n]) {
            return this.rule(strategies[n](what, handler));
          }
        }
  
        throw new Error("invalid 'what' in when()");
      };
  
    /**
     * @ngdoc object
     * @name ui.router.router.$urlRouter
     *
     * @requires $location
     * @requires $rootScope
     * @requires $injector
     *
     * @description
     *
     */
    this.$get =
      [        '$location', '$rootScope', '$injector',
      function ($location,   $rootScope,   $injector) {
        // TODO: Optimize groups of rules with non-empty prefix into some sort of decision tree
        function update(evt) {
          if (evt && evt.defaultPrevented) return;
          function check(rule) {
            var handled = rule($injector, $location);
            if (handled) {
              if (isString(handled)) $location.replace().url(handled);
              return true;
            }
            return false;
          }
          var n=rules.length, i;
          for (i=0; i<n; i++) {
            if (check(rules[i])) return;
          }
          // always check otherwise last to allow dynamic updates to the set of rules
          if (otherwise) check(otherwise);
        }
  
        $rootScope.$on('$locationChangeSuccess', update);
  
        return {
          /**
           * @ngdoc function
           * @name ui.router.router.$urlRouter#sync
           * @methodOf ui.router.router.$urlRouter
           *
           * @description
           * Triggers an update; the same update that happens when the address bar url changes, aka `$locationChangeSuccess`.
           * This method is useful when you need to use `preventDefault()` on the `$locationChangeSuccess` event, 
           * perform some custom logic (route protection, auth, config, redirection, etc) and then finally proceed 
           * with the transition by calling `$urlRouter.sync()`.
           *
           * @example
           * <pre>
           * angular.module('app', ['ui.router']);
           *   .run(function($rootScope, $urlRouter) {
           *     $rootScope.$on('$locationChangeSuccess', function(evt) {
           *       // Halt state change from even starting
           *       evt.preventDefault();
           *       // Perform custom logic
           *       var meetsRequirement = ...
           *       // Continue with the update and state transition if logic allows
           *       if (meetsRequirement) $urlRouter.sync();
           *     });
           * });
           * </pre>
           */
          sync: function () {
            update();
          }
        };
      }];
  }
  
  angular.module('ui.router.router').provider('$urlRouter', $UrlRouterProvider);
  
  /**
   * @ngdoc object
   * @name ui.router.state.$stateProvider
   *
   * @requires ui.router.router.$urlRouterProvider
   * @requires ui.router.util.$urlMatcherFactoryProvider
   * @requires $locationProvider
   *
   * @description
   * The new `$stateProvider` works similar to Angular's v1 router, but it focuses purely
   * on state.
   *
   * A state corresponds to a "place" in the application in terms of the overall UI and
   * navigation. A state describes (via the controller / template / view properties) what
   * the UI looks like and does at that place.
   *
   * States often have things in common, and the primary way of factoring out these
   * commonalities in this model is via the state hierarchy, i.e. parent/child states aka
   * nested states.
   *
   * The `$stateProvider` provides interfaces to declare these states for your app.
   */
  $StateProvider.$inject = ['$urlRouterProvider', '$urlMatcherFactoryProvider', '$locationProvider'];
  function $StateProvider(   $urlRouterProvider,   $urlMatcherFactory,           $locationProvider) {
  
    var root, states = {}, $state, queue = {}, abstractKey = 'abstract';
  
    // Builds state properties from definition passed to registerState()
    var stateBuilder = {
  
      // Derive parent state from a hierarchical name only if 'parent' is not explicitly defined.
      // state.children = [];
      // if (parent) parent.children.push(state);
      parent: function(state) {
        if (isDefined(state.parent) && state.parent) return findState(state.parent);
        // regex matches any valid composite state name
        // would match "contact.list" but not "contacts"
        var compositeName = /^(.+)\.[^.]+$/.exec(state.name);
        return compositeName ? findState(compositeName[1]) : root;
      },
  
      // inherit 'data' from parent and override by own values (if any)
      data: function(state) {
        if (state.parent && state.parent.data) {
          state.data = state.self.data = extend({}, state.parent.data, state.data);
        }
        return state.data;
      },
  
      // Build a URLMatcher if necessary, either via a relative or absolute URL
      url: function(state) {
        var url = state.url;
  
        if (isString(url)) {
          if (url.charAt(0) == '^') {
            return $urlMatcherFactory.compile(url.substring(1));
          }
          return (state.parent.navigable || root).url.concat(url);
        }
  
        if ($urlMatcherFactory.isMatcher(url) || url == null) {
          return url;
        }
        throw new Error("Invalid url '" + url + "' in state '" + state + "'");
      },
  
      // Keep track of the closest ancestor state that has a URL (i.e. is navigable)
      navigable: function(state) {
        return state.url ? state : (state.parent ? state.parent.navigable : null);
      },
  
      // Derive parameters for this state and ensure they're a super-set of parent's parameters
      params: function(state) {
        if (!state.params) {
          return state.url ? state.url.parameters() : state.parent.params;
        }
        if (!isArray(state.params)) throw new Error("Invalid params in state '" + state + "'");
        if (state.url) throw new Error("Both params and url specicified in state '" + state + "'");
        return state.params;
      },
  
      // If there is no explicit multi-view configuration, make one up so we don't have
      // to handle both cases in the view directive later. Note that having an explicit
      // 'views' property will mean the default unnamed view properties are ignored. This
      // is also a good time to resolve view names to absolute names, so everything is a
      // straight lookup at link time.
      views: function(state) {
        var views = {};
  
        forEach(isDefined(state.views) ? state.views : { '': state }, function (view, name) {
          if (name.indexOf('@') < 0) name += '@' + state.parent.name;
          views[name] = view;
        });
        return views;
      },
  
      ownParams: function(state) {
        if (!state.parent) {
          return state.params;
        }
        var paramNames = {}; forEach(state.params, function (p) { paramNames[p] = true; });
  
        forEach(state.parent.params, function (p) {
          if (!paramNames[p]) {
            throw new Error("Missing required parameter '" + p + "' in state '" + state.name + "'");
          }
          paramNames[p] = false;
        });
        var ownParams = [];
  
        forEach(paramNames, function (own, p) {
          if (own) ownParams.push(p);
        });
        return ownParams;
      },
  
      // Keep a full path from the root down to this state as this is needed for state activation.
      path: function(state) {
        return state.parent ? state.parent.path.concat(state) : []; // exclude root from path
      },
  
      // Speed up $state.contains() as it's used a lot
      includes: function(state) {
        var includes = state.parent ? extend({}, state.parent.includes) : {};
        includes[state.name] = true;
        return includes;
      },
  
      $delegates: {}
    };
  
    function isRelative(stateName) {
      return stateName.indexOf(".") === 0 || stateName.indexOf("^") === 0;
    }
  
    function findState(stateOrName, base) {
      var isStr = isString(stateOrName),
          name  = isStr ? stateOrName : stateOrName.name,
          path  = isRelative(name);
  
      if (path) {
        if (!base) throw new Error("No reference point given for path '"  + name + "'");
        var rel = name.split("."), i = 0, pathLength = rel.length, current = base;
  
        for (; i < pathLength; i++) {
          if (rel[i] === "" && i === 0) {
            current = base;
            continue;
          }
          if (rel[i] === "^") {
            if (!current.parent) throw new Error("Path '" + name + "' not valid for state '" + base.name + "'");
            current = current.parent;
            continue;
          }
          break;
        }
        rel = rel.slice(i).join(".");
        name = current.name + (current.name && rel ? "." : "") + rel;
      }
      var state = states[name];
  
      if (state && (isStr || (!isStr && (state === stateOrName || state.self === stateOrName)))) {
        return state;
      }
      return undefined;
    }
  
    function queueState(parentName, state) {
      if (!queue[parentName]) {
        queue[parentName] = [];
      }
      queue[parentName].push(state);
    }
  
    function registerState(state) {
      // Wrap a new object around the state so we can store our private details easily.
      state = inherit(state, {
        self: state,
        resolve: state.resolve || {},
        toString: function() { return this.name; }
      });
  
      var name = state.name;
      if (!isString(name) || name.indexOf('@') >= 0) throw new Error("State must have a valid name");
      if (states.hasOwnProperty(name)) throw new Error("State '" + name + "'' is already defined");
  
      // Get parent name
      var parentName = (name.indexOf('.') !== -1) ? name.substring(0, name.lastIndexOf('.'))
          : (isString(state.parent)) ? state.parent
          : '';
  
      // If parent is not registered yet, add state to queue and register later
      if (parentName && !states[parentName]) {
        return queueState(parentName, state.self);
      }
  
      for (var key in stateBuilder) {
        if (isFunction(stateBuilder[key])) state[key] = stateBuilder[key](state, stateBuilder.$delegates[key]);
      }
      states[name] = state;
  
      // Register the state in the global state list and with $urlRouter if necessary.
      if (!state[abstractKey] && state.url) {
        $urlRouterProvider.when(state.url, ['$match', '$stateParams', function ($match, $stateParams) {
          if ($state.$current.navigable != state || !equalForKeys($match, $stateParams)) {
            $state.transitionTo(state, $match, { location: false });
          }
        }]);
      }
  
      // Register any queued children
      if (queue[name]) {
        for (var i = 0; i < queue[name].length; i++) {
          registerState(queue[name][i]);
        }
      }
  
      return state;
    }
  
  
    // Implicit root state that is always active
    root = registerState({
      name: '',
      url: '^',
      views: null,
      'abstract': true
    });
    root.navigable = null;
  
  
    /**
     * @ngdoc function
     * @name ui.router.state.$stateProvider#decorator
     * @methodOf ui.router.state.$stateProvider
     *
     * @description
     * Allows you to extend (carefully) or override (at your own peril) the 
     * `stateBuilder` object used internally by `$stateProvider`. This can be used 
     * to add custom functionality to ui-router, for example inferring templateUrl 
     * based on the state name.
     *
     * When passing only a name, it returns the current (original or decorated) builder
     * function that matches `name`.
     *
     * The builder functions that can be decorated are listed below. Though not all
     * necessarily have a good use case for decoration, that is up to you to decide.
     *
     * In addition, users can attach custom decorators, which will generate new 
     * properties within the state's internal definition. There is currently no clear 
     * use-case for this beyond accessing internal states (i.e. $state.$current), 
     * however, expect this to become increasingly relevant as we introduce additional 
     * meta-programming features.
     *
     * **Warning**: Decorators should not be interdependent because the order of 
     * execution of the builder functions in nondeterministic. Builder functions 
     * should only be dependent on the state definition object and super function.
     *
     *
     * Existing builder functions and current return values:
     *
     * - parent - `{object}` - returns the parent state object.
     * - data - `{object}` - returns state data, including any inherited data that is not
     *   overridden by own values (if any).
     * - url - `{object}` - returns a UrlMatcher or null.
     * - navigable - returns closest ancestor state that has a URL (aka is 
     *   navigable).
     * - params - `{object}` - returns an array of state params that are ensured to 
     *   be a super-set of parent's params.
     * - views - `{object}` - returns a views object where each key is an absolute view 
     *   name (i.e. "viewName@stateName") and each value is the config object 
     *   (template, controller) for the view. Even when you don't use the views object 
     *   explicitly on a state config, one is still created for you internally.
     *   So by decorating this builder function you have access to decorating template 
     *   and controller properties.
     * - ownParams - `{object}` - returns an array of params that belong to the state, 
     *   not including any params defined by ancestor states.
     * - path - `{string}` - returns the full path from the root down to this state. 
     *   Needed for state activation.
     * - includes - `{object}` - returns an object that includes every state that 
     *   would pass a '$state.includes()' test.
     *
     * @example
     * <pre>
     * // Override the internal 'views' builder with a function that takes the state
     * // definition, and a reference to the internal function being overridden:
     * $stateProvider.decorator('views', function ($state, parent) {
     *   var result = {},
     *       views = parent(state);
     *
     *   angular.forEach(view, function (config, name) {
     *     var autoName = (state.name + '.' + name).replace('.', '/');
     *     config.templateUrl = config.templateUrl || '/partials/' + autoName + '.html';
     *     result[name] = config;
     *   });
     *   return result;
     * });
     *
     * $stateProvider.state('home', {
     *   views: {
     *     'contact.list': { controller: 'ListController' },
     *     'contact.item': { controller: 'ItemController' }
     *   }
     * });
     *
     * // ...
     *
     * $state.go('home');
     * // Auto-populates list and item views with /partials/home/contact/list.html,
     * // and /partials/home/contact/item.html, respectively.
     * </pre>
     *
     * @param {string} name The name of the builder function to decorate. 
     * @param {object} func A function that is responsible for decorating the original 
     * builder function. The function receives two parameters:
     *
     *   - `{object}` - state - The state config object.
     *   - `{object}` - super - The original builder function.
     *
     * @return {object} $stateProvider - $stateProvider instance
     */
    this.decorator = decorator;
    function decorator(name, func) {
      /*jshint validthis: true */
      if (isString(name) && !isDefined(func)) {
        return stateBuilder[name];
      }
      if (!isFunction(func) || !isString(name)) {
        return this;
      }
      if (stateBuilder[name] && !stateBuilder.$delegates[name]) {
        stateBuilder.$delegates[name] = stateBuilder[name];
      }
      stateBuilder[name] = func;
      return this;
    }
  
    /**
     * @ngdoc function
     * @name ui.router.state.$stateProvider#state
     * @methodOf ui.router.state.$stateProvider
     *
     * @description
     * Registers a state configuration under a given state name. The stateConfig object
     * has the following acceptable properties.
     * 
     * - [`template`, `templateUrl`, `templateProvider`] - There are three ways to setup
     *   your templates.
     *
     *   - `{string|object}` - template - String HTML content, or function that returns an HTML
     *   string.
     *   - `{string}` - templateUrl - String URL path to template file OR function,
     *   that returns URL path string.
     *   - `{object}` - templateProvider - Provider function that returns HTML content
     *   string.
     *
     * - [`controller`, `controllerProvider`] - A controller paired to the state. You can
     *   either use a controller, or a controller provider.
     *
     *   - `{string|object}` - controller - Controller function or controller name.
     *   - `{object}` - controllerProvider - Injectable provider function that returns
     *   the actual controller or string.
     *
     * - `{object}` - resolve - A map of dependencies which should be injected into the
     *   controller.
     *
     * - `{string}` - url - A url with optional parameters. When a state is navigated or
     *   transitioned to, the `$stateParams` service will be populated with any 
     *   parameters that were passed.
     *
     * - `{object}` - params - An array of parameter names or regular expressions. Only 
     *   use this within a state if you are not using url. Otherwise you can specify your
     *   parameters within the url. When a state is navigated or transitioned to, the 
     *   $stateParams service will be populated with any parameters that were passed.
     *
     * - `{object}` - views - Use the views property to set up multiple views. 
     *   If you don't need multiple views within a single state this property is not 
     *   needed. Tip: remember that often nested views are more useful and powerful 
     *   than multiple sibling views.
     *
     * - `{boolean}` - abstract - An abstract state will never be directly activated, 
     *   but can provide inherited properties to its common children states.
     *
     * - `{object}` - onEnter - Callback function for when a state is entered. Good way
     *   to trigger an action or dispatch an event, such as opening a dialog.
     *
     * - `{object}` - onExit - Callback function for when a state is exited. Good way to
     *   trigger an action or dispatch an event, such as opening a dialog.
     *
     * - `{object}` - data - Arbitrary data object, useful for custom configuration.
     *
     * @example
     * <pre>
     * // The state() method takes a unique stateName (String) and a stateConfig (Object)
     * $stateProvider.state(stateName, stateConfig);
     *
     * // stateName can be a single top-level name (must be unique).
     * $stateProvider.state("home", {});
     *
     * // Or it can be a nested state name. This state is a child of the above "home" state.
     * $stateProvider.state("home.newest", {});
     *
     * // Nest states as deeply as needed.
     * $stateProvider.state("home.newest.abc.xyz.inception", {});
     *
     * // state() returns $stateProvider, so you can chain state declarations.
     * $stateProvider
     *   .state("home", {})
     *   .state("about", {})
     *   .state("contacts", {});
     * </pre>
     *
     * @param {string} name A unique state name, e.g. "home", "about", "contacts". 
     * To create a parent/child state use a dot, e.g. "about.sales", "home.newest".
     * @param {object} definition State configuratino object.
     */
    this.state = state;
    function state(name, definition) {
      /*jshint validthis: true */
      if (isObject(name)) definition = name;
      else definition.name = name;
      registerState(definition);
      return this;
    }
  
    /**
     * @ngdoc object
     * @name ui.router.state.$state
     *
     * @requires $rootScope
     * @requires $q
     * @requires ui.router.state.$view
     * @requires $injector
     * @requires ui.router.util.$resolve
     * @requires ui.router.state.$stateParams
     *
     * @property {object} params A param object, e.g. {sectionId: section.id)}, that 
     * you'd like to test against the current active state.
     * @property {object} current A reference to the state's config object. However 
     * you passed it in. Useful for accessing custom data.
     * @property {object} transition Currently pending transition. A promise that'll 
     * resolve or reject.
     *
     * @description
     * `$state` service is responsible for representing states as well as transitioning
     * between them. It also provides interfaces to ask for current state or even states
     * you're coming from.
     */
    // $urlRouter is injected just to ensure it gets instantiated
    this.$get = $get;
    $get.$inject = ['$rootScope', '$q', '$view', '$injector', '$resolve', '$stateParams', '$location', '$urlRouter'];
    function $get(   $rootScope,   $q,   $view,   $injector,   $resolve,   $stateParams,   $location,   $urlRouter) {
  
      var TransitionSuperseded = $q.reject(new Error('transition superseded'));
      var TransitionPrevented = $q.reject(new Error('transition prevented'));
      var TransitionAborted = $q.reject(new Error('transition aborted'));
      var TransitionFailed = $q.reject(new Error('transition failed'));
      var currentLocation = $location.url();
  
      function syncUrl() {
        if ($location.url() !== currentLocation) {
          $location.url(currentLocation);
          $location.replace();
        }
      }
  
      root.locals = { resolve: null, globals: { $stateParams: {} } };
      $state = {
        params: {},
        current: root.self,
        $current: root,
        transition: null
      };
  
      /**
       * @ngdoc function
       * @name ui.router.state.$state#reload
       * @methodOf ui.router.state.$state
       *
       * @description
       * Reloads the current state by re-transitioning to it.
       *
       * @example
       * <pre>
       * var app angular.module('app', ['ui.router.state']);
       *
       * app.controller('ctrl', function ($state) {
       *   $state.reload();
       * });
       * </pre>
       */
      $state.reload = function reload() {
        $state.transitionTo($state.current, $stateParams, { reload: true, inherit: false, notify: false });
      };
  
      /**
       * @ngdoc function
       * @name ui.router.state.$state#go
       * @methodOf ui.router.state.$state
       *
       * @description
       * Convenience method for transitioning to a new state. `$state.go` calls 
       * `$state.transitionTo` internally but automatically sets options to 
       * `{ location: true, inherit: true, relative: $state.$current, notify: true }`. 
       * This allows you to easily use an absolute or relative to path and specify 
       * only the parameters you'd like to update (while letting unspecified parameters 
       * inherit from the current state.
       *
       * Some examples:
       *
       * - `$state.go('contact.detail')` - will go to the `contact.detail` state
       * - `$state.go('^')` - will go to a parent state
       * - `$state.go('^.sibling')` - will go to a sibling state
       * - `$state.go('.child.grandchild')` - will go to grandchild state
       *
       * @example
       * <pre>
       * var app = angular.module('app', ['ui.router.state']);
       *
       * app.controller('ctrl', function ($scope, $state) {
       *   $scope.changeState = function () {
       *     $state.go('contact.detail');
       *   };
       * });
       * </pre>
       *
       * @param {string} to Absolute State Name or Relative State Path.
       * @param {object} params A map of the parameters that will be sent to the state, 
       * will populate $stateParams.
       * @param {object} options If Object is passed, object is an options hash.
       */
      $state.go = function go(to, params, options) {
        return this.transitionTo(to, params, extend({ inherit: true, relative: $state.$current }, options));
      };
  
      /**
       * @ngdoc function
       * @name ui.router.state.$state#transitionTo
       * @methodOf ui.router.state.$state
       *
       * @description
       * Low-level method for transitioning to a new state. {@link ui.router.state.$state#methods_go $state.go}
       * uses `transitionTo` internally. `$state.go` is recommended in most situations.
       *
       * @example
       * <pre>
       * var app = angular.module('app', ['ui.router.state']);
       *
       * app.controller('ctrl', function ($scope, $state) {
       *   $scope.changeState = function () {
       *     $state.transitionTo('contact.detail');
       *   };
       * });
       * </pre>
       *
       * @param {string} to Absolute State Name or Relative State Path.
       * @param {object} params A map of the parameters that will be sent to the state, 
       * will populate $stateParams.
       * @param {object} options If Object is passed, object is an options hash.
       */
      $state.transitionTo = function transitionTo(to, toParams, options) {
        toParams = toParams || {};
        options = extend({
          location: true, inherit: false, relative: null, notify: true, reload: false, $retry: false
        }, options || {});
  
        var from = $state.$current, fromParams = $state.params, fromPath = from.path;
        var evt, toState = findState(to, options.relative);
  
        if (!isDefined(toState)) {
          // Broadcast not found event and abort the transition if prevented
          var redirect = { to: to, toParams: toParams, options: options };
          evt = $rootScope.$broadcast('$stateNotFound', redirect, from.self, fromParams);
          if (evt.defaultPrevented) {
            syncUrl();
            return TransitionAborted;
          }
  
          // Allow the handler to return a promise to defer state lookup retry
          if (evt.retry) {
            if (options.$retry) {
              syncUrl();
              return TransitionFailed;
            }
            var retryTransition = $state.transition = $q.when(evt.retry);
            retryTransition.then(function() {
              if (retryTransition !== $state.transition) return TransitionSuperseded;
              redirect.options.$retry = true;
              return $state.transitionTo(redirect.to, redirect.toParams, redirect.options);
            }, function() {
              return TransitionAborted;
            });
            syncUrl();
            return retryTransition;
          }
  
          // Always retry once if the $stateNotFound was not prevented
          // (handles either redirect changed or state lazy-definition)
          to = redirect.to;
          toParams = redirect.toParams;
          options = redirect.options;
          toState = findState(to, options.relative);
          if (!isDefined(toState)) {
            if (options.relative) throw new Error("Could not resolve '" + to + "' from state '" + options.relative + "'");
            throw new Error("No such state '" + to + "'");
          }
        }
        if (toState[abstractKey]) throw new Error("Cannot transition to abstract state '" + to + "'");
        if (options.inherit) toParams = inheritParams($stateParams, toParams || {}, $state.$current, toState);
        to = toState;
  
        var toPath = to.path;
  
        // Starting from the root of the path, keep all levels that haven't changed
        var keep, state, locals = root.locals, toLocals = [];
        for (keep = 0, state = toPath[keep];
             state && state === fromPath[keep] && equalForKeys(toParams, fromParams, state.ownParams) && !options.reload;
             keep++, state = toPath[keep]) {
          locals = toLocals[keep] = state.locals;
        }
  
        // If we're going to the same state and all locals are kept, we've got nothing to do.
        // But clear 'transition', as we still want to cancel any other pending transitions.
        // TODO: We may not want to bump 'transition' if we're called from a location change that we've initiated ourselves,
        // because we might accidentally abort a legitimate transition initiated from code?
        if (shouldTriggerReload(to, from, locals, options) ) {
          if ( to.self.reloadOnSearch !== false )
            syncUrl();
          $state.transition = null;
          return $q.when($state.current);
        }
  
        // Normalize/filter parameters before we pass them to event handlers etc.
        toParams = normalize(to.params, toParams || {});
  
        // Broadcast start event and cancel the transition if requested
        if (options.notify) {
          evt = $rootScope.$broadcast('$stateChangeStart', to.self, toParams, from.self, fromParams);
          if (evt.defaultPrevented) {
            syncUrl();
            return TransitionPrevented;
          }
        }
  
        // Resolve locals for the remaining states, but don't update any global state just
        // yet -- if anything fails to resolve the current state needs to remain untouched.
        // We also set up an inheritance chain for the locals here. This allows the view directive
        // to quickly look up the correct definition for each view in the current state. Even
        // though we create the locals object itself outside resolveState(), it is initially
        // empty and gets filled asynchronously. We need to keep track of the promise for the
        // (fully resolved) current locals, and pass this down the chain.
        var resolved = $q.when(locals);
        for (var l=keep; l<toPath.length; l++, state=toPath[l]) {
          locals = toLocals[l] = inherit(locals);
          resolved = resolveState(state, toParams, state===to, resolved, locals);
        }
  
        // Once everything is resolved, we are ready to perform the actual transition
        // and return a promise for the new state. We also keep track of what the
        // current promise is, so that we can detect overlapping transitions and
        // keep only the outcome of the last transition.
        var transition = $state.transition = resolved.then(function () {
          var l, entering, exiting;
  
          if ($state.transition !== transition) return TransitionSuperseded;
  
          // Exit 'from' states not kept
          for (l=fromPath.length-1; l>=keep; l--) {
            exiting = fromPath[l];
            if (exiting.self.onExit) {
              $injector.invoke(exiting.self.onExit, exiting.self, exiting.locals.globals);
            }
            exiting.locals = null;
          }
  
          // Enter 'to' states not kept
          for (l=keep; l<toPath.length; l++) {
            entering = toPath[l];
            entering.locals = toLocals[l];
            if (entering.self.onEnter) {
              $injector.invoke(entering.self.onEnter, entering.self, entering.locals.globals);
            }
          }
  
          // Run it again, to catch any transitions in callbacks
          if ($state.transition !== transition) return TransitionSuperseded;
  
          // Update globals in $state
          $state.$current = to;
          $state.current = to.self;
          $state.params = toParams;
          copy($state.params, $stateParams);
          $state.transition = null;
  
          // Update $location
          var toNav = to.navigable;
          if (options.location && toNav) {
            $location.url(toNav.url.format(toNav.locals.globals.$stateParams));
  
            if (options.location === 'replace') {
              $location.replace();
            }
          }
  
          if (options.notify) {
            $rootScope.$broadcast('$stateChangeSuccess', to.self, toParams, from.self, fromParams);
          }
          currentLocation = $location.url();
  
          return $state.current;
        }, function (error) {
          if ($state.transition !== transition) return TransitionSuperseded;
  
          $state.transition = null;
          $rootScope.$broadcast('$stateChangeError', to.self, toParams, from.self, fromParams, error);
          syncUrl();
  
          return $q.reject(error);
        });
  
        return transition;
      };
  
      /**
       * @ngdoc function
       * @name ui.router.state.$state#is
       * @methodOf ui.router.state.$state
       *
       * @description
       * Similar to {@link ui.router.state.$state#methods_includes $state.includes},
       * but only checks for the full state name. If params is supplied then it will be 
       * tested for strict equality against the current active params object, so all params 
       * must match with none missing and no extras.
       *
       * @example
       * <pre>
       * $state.is('contact.details.item'); // returns true
       * $state.is(contactDetailItemStateObject); // returns true
       *
       * // everything else would return false
       * </pre>
       *
       * @param {string|object} stateName The state name or state object you'd like to check.
       * @param {object} params A param object, e.g. `{sectionId: section.id}`, that you'd like 
       * to test against the current active state.
       * @returns {boolean} Returns true or false whether its the state or not.
       */
      $state.is = function is(stateOrName, params) {
        var state = findState(stateOrName);
  
        if (!isDefined(state)) {
          return undefined;
        }
  
        if ($state.$current !== state) {
          return false;
        }
  
        return isDefined(params) && params !== null ? angular.equals($stateParams, params) : true;
      };
  
      /**
       * @ngdoc function
       * @name ui.router.state.$state#includes
       * @methodOf ui.router.state.$state
       *
       * @description
       * A method to determine if the current active state is equal to or is the child of the 
       * state stateName. If any params are passed then they will be tested for a match as well.
       * Not all the parameters need to be passed, just the ones you'd like to test for equality.
       *
       * @example
       * <pre>
       * $state.includes("contacts"); // returns true
       * $state.includes("contacts.details"); // returns true
       * $state.includes("contacts.details.item"); // returns true
       * $state.includes("contacts.list"); // returns false
       * $state.includes("about"); // returns false
       * </pre>
       *
       * @param {string} stateOrName A partial name to be searched for within the current state name.
       * @param {object} params A param object, e.g. `{sectionId: section.id}`, 
       * that you'd like to test against the current active state.
       * @returns {boolean} True or false
       */
      $state.includes = function includes(stateOrName, params) {
        var state = findState(stateOrName);
        if (!isDefined(state)) {
          return undefined;
        }
  
        if (!isDefined($state.$current.includes[state.name])) {
          return false;
        }
  
        var validParams = true;
        angular.forEach(params, function(value, key) {
          if (!isDefined($stateParams[key]) || $stateParams[key] !== value) {
            validParams = false;
          }
        });
        return validParams;
      };
  
      /**
       * @ngdoc function
       * @name ui.router.state.$state#href
       * @methodOf ui.router.state.$state
       *
       * @description
       * A url generation method that returns the compiled url for the given state populated with the given params.
       *
       * @example
       * <pre>
       * expect($state.href("about.person", { person: "bob" })).toEqual("/about/bob");
       * </pre>
       *
       * @param {string|object} stateOrName The state name or state object you'd like to generate a url from.
       * @param {object} params An object of parameter values to fill the state's required parameters.
       * @returns {string} url
       */
      $state.href = function href(stateOrName, params, options) {
        options = extend({ lossy: true, inherit: false, absolute: false, relative: $state.$current }, options || {});
        var state = findState(stateOrName, options.relative);
        if (!isDefined(state)) return null;
  
        params = inheritParams($stateParams, params || {}, $state.$current, state);
        var nav = (state && options.lossy) ? state.navigable : state;
        var url = (nav && nav.url) ? nav.url.format(normalize(state.params, params || {})) : null;
        if (!$locationProvider.html5Mode() && url) {
          url = "#" + $locationProvider.hashPrefix() + url;
        }
        if (options.absolute && url) {
          url = $location.protocol() + '://' + 
                $location.host() + 
                ($location.port() == 80 || $location.port() == 443 ? '' : ':' + $location.port()) + 
                (!$locationProvider.html5Mode() && url ? '/' : '') + 
                url;
        }
        return url;
      };
  
      /**
       * @ngdoc function
       * @name ui.router.state.$state#get
       * @methodOf ui.router.state.$state
       *
       * @description
       * Returns the state configuration object for any state by passing the name
       * as a string. Without any arguments it'll return a array of all configured
       * state objects.
       *
       * @param {string|object} stateOrName The name of the state for which you'd like 
       * to get the original state configuration object for.
       * @returns {object} State configuration object or array of all objects.
       */
      $state.get = function (stateOrName, context) {
        if (!isDefined(stateOrName)) {
          var list = [];
          forEach(states, function(state) { list.push(state.self); });
          return list;
        }
        var state = findState(stateOrName, context);
        return (state && state.self) ? state.self : null;
      };
  
      function resolveState(state, params, paramsAreFiltered, inherited, dst) {
        // Make a restricted $stateParams with only the parameters that apply to this state if
        // necessary. In addition to being available to the controller and onEnter/onExit callbacks,
        // we also need $stateParams to be available for any $injector calls we make during the
        // dependency resolution process.
        var $stateParams = (paramsAreFiltered) ? params : filterByKeys(state.params, params);
        var locals = { $stateParams: $stateParams };
  
        // Resolve 'global' dependencies for the state, i.e. those not specific to a view.
        // We're also including $stateParams in this; that way the parameters are restricted
        // to the set that should be visible to the state, and are independent of when we update
        // the global $state and $stateParams values.
        dst.resolve = $resolve.resolve(state.resolve, locals, dst.resolve, state);
        var promises = [ dst.resolve.then(function (globals) {
          dst.globals = globals;
        }) ];
        if (inherited) promises.push(inherited);
  
        // Resolve template and dependencies for all views.
        forEach(state.views, function (view, name) {
          var injectables = (view.resolve && view.resolve !== state.resolve ? view.resolve : {});
          injectables.$template = [ function () {
            return $view.load(name, { view: view, locals: locals, params: $stateParams, notify: false }) || '';
          }];
  
          promises.push($resolve.resolve(injectables, locals, dst.resolve, state).then(function (result) {
            // References to the controller (only instantiated at link time)
            if (isFunction(view.controllerProvider) || isArray(view.controllerProvider)) {
              var injectLocals = angular.extend({}, injectables, locals);
              result.$$controller = $injector.invoke(view.controllerProvider, null, injectLocals);
            } else {
              result.$$controller = view.controller;
            }
            // Provide access to the state itself for internal use
            result.$$state = state;
            dst[name] = result;
          }));
        });
  
        // Wait for all the promises and then return the activation object
        return $q.all(promises).then(function (values) {
          return dst;
        });
      }
  
      return $state;
    }
  
    function shouldTriggerReload(to, from, locals, options) {
      if ( to === from && ((locals === from.locals && !options.reload) || (to.self.reloadOnSearch === false)) ) {
        return true;
      }
    }
  }
  
  angular.module('ui.router.state')
    .value('$stateParams', {})
    .provider('$state', $StateProvider);
  
  
  $ViewProvider.$inject = [];
  function $ViewProvider() {
  
    this.$get = $get;
    /**
     * @ngdoc object
     * @name ui.router.state.$view
     *
     * @requires ui.router.util.$templateFactory
     * @requires $rootScope
     *
     * @description
     *
     */
    $get.$inject = ['$rootScope', '$templateFactory'];
    function $get(   $rootScope,   $templateFactory) {
      return {
        // $view.load('full.viewName', { template: ..., controller: ..., resolve: ..., async: false, params: ... })
        /**
         * @ngdoc function
         * @name ui.router.state.$view#load
         * @methodOf ui.router.state.$view
         *
         * @description
         *
         * @param {string} name name
         * @param {object} options option object.
         */
        load: function load(name, options) {
          var result, defaults = {
            template: null, controller: null, view: null, locals: null, notify: true, async: true, params: {}
          };
          options = extend(defaults, options);
  
          if (options.view) {
            result = $templateFactory.fromConfig(options.view, options.params, options.locals);
          }
          if (result && options.notify) {
            $rootScope.$broadcast('$viewContentLoading', options);
          }
          return result;
        }
      };
    }
  }
  
  angular.module('ui.router.state').provider('$view', $ViewProvider);
  
  /**
   * @ngdoc provider
   * @name ui.router.state.$uiViewScroll
   *
   * @requires $anchorScroll
   * @requires $timeout
   *
   * @description
   * When called with a jqLite element, it scrolls the element into view (after a
   * `$timeout` so the DOM has time to refresh).
   *
   * If you prefer to rely on `$anchorScroll` to scroll the view to the anchor,
   * this can be enabled by calling `$uiViewScrollProvider.useAnchorScroll()`.
   */
  function $ViewScrollProvider() {
  
    var useAnchorScroll = false;
  
    this.useAnchorScroll = function () {
      useAnchorScroll = true;
    };
  
    this.$get = ['$anchorScroll', '$timeout', function ($anchorScroll, $timeout) {
      if (useAnchorScroll) {
        return $anchorScroll;
      }
  
      return function ($element) {
        $timeout(function () {
          $element[0].scrollIntoView();
        }, 0, false);
      };
    }];
  }
  
  angular.module('ui.router.state').provider('$uiViewScroll', $ViewScrollProvider);
  
  /**
   * @ngdoc directive
   * @name ui.router.state.diretive.ui-view
   *
   * @requires ui.router.state.$state
   * @requires $compile
   * @requires $controller
   * @requires $injector
   *
   * @restrict ECA
   *
   * @description
   * The ui-view directive tells $state where to place your templates.
   * A view can be unnamed or named.
   *
   * @param {string} ui-view A view name.
   */
  $ViewDirective.$inject = ['$state', '$compile', '$controller', '$injector', '$uiViewScroll', '$document'];
  function $ViewDirective(   $state,   $compile,   $controller,   $injector,   $uiViewScroll,   $document) {
  
    function getService() {
      return ($injector.has) ? function(service) {
        return $injector.has(service) ? $injector.get(service) : null;
      } : function(service) {
        try {
          return $injector.get(service);
        } catch (e) {
          return null;
        }
      };
    }
  
    var viewIsUpdating = false,
        service = getService(),
        $animator = service('$animator'),
        $animate = service('$animate');
  
    // Returns a set of DOM manipulation functions based on whether animation
    // should be performed
    function getRenderer(element, attrs, scope) {
      var statics = function() {
        return {
          leave: function (element) { element.remove(); },
          enter: function (element, parent, anchor) { anchor.after(element); }
        };
      };
  
      if ($animate) {
        return function(shouldAnimate) {
          return !shouldAnimate ? statics() : {
            enter: function(element, parent, anchor) { $animate.enter(element, null, anchor); },
            leave: function(element) { $animate.leave(element, function() { element.remove(); }); }
          };
        };
      }
  
      if ($animator) {
        var animate = $animator && $animator(scope, attrs);
  
        return function(shouldAnimate) {
          return !shouldAnimate ? statics() : {
            enter: function(element, parent, anchor) { animate.enter(element, parent); },
            leave: function(element) { animate.leave(element.contents(), element); }
          };
        };
      }
  
      return statics;
    }
  
    var directive = {
      restrict: 'ECA',
      compile: function (element, attrs) {
        var initial   = element.html(),
            isDefault = true,
            anchor    = angular.element($document[0].createComment(' ui-view-anchor ')),
            parentEl  = element.parent();
  
        element.prepend(anchor);
  
        return function ($scope) {
          var inherited = parentEl.inheritedData('$uiView');
  
          var currentScope, currentEl, viewLocals,
              name      = attrs[directive.name] || attrs.name || '',
              onloadExp = attrs.onload || '',
              autoscrollExp = attrs.autoscroll,
              renderer  = getRenderer(element, attrs, $scope);
  
          if (name.indexOf('@') < 0) name = name + '@' + (inherited ? inherited.state.name : '');
          var view = { name: name, state: null };
  
          var eventHook = function () {
            if (viewIsUpdating) return;
            viewIsUpdating = true;
  
            try { updateView(true); } catch (e) {
              viewIsUpdating = false;
              throw e;
            }
            viewIsUpdating = false;
          };
  
          $scope.$on('$stateChangeSuccess', eventHook);
          $scope.$on('$viewContentLoading', eventHook);
  
          updateView(false);
  
          function cleanupLastView() {
            if (currentEl) {
              renderer(true).leave(currentEl);
              currentEl = null;
            }
  
            if (currentScope) {
              currentScope.$destroy();
              currentScope = null;
            }
          }
  
          function updateView(shouldAnimate) {
            var locals = $state.$current && $state.$current.locals[name];
  
            if (isDefault) {
              isDefault = false;
              element.replaceWith(anchor);
            }
  
            if (!locals) {
              cleanupLastView();
              currentEl = element.clone();
              currentEl.html(initial);
              renderer(shouldAnimate).enter(currentEl, parentEl, anchor);
  
              currentScope = $scope.$new();
              $compile(currentEl.contents())(currentScope);
              return;
            }
  
            if (locals === viewLocals) return; // nothing to do
  
            cleanupLastView();
  
            currentEl = element.clone();
            currentEl.html(locals.$template ? locals.$template : initial);
            renderer(true).enter(currentEl, parentEl, anchor);
  
            currentEl.data('$uiView', view);
  
            viewLocals = locals;
            view.state = locals.$$state;
  
            var link = $compile(currentEl.contents());
  
            currentScope = $scope.$new();
  
            if (locals.$$controller) {
              locals.$scope = currentScope;
              var controller = $controller(locals.$$controller, locals);
              currentEl.children().data('$ngControllerController', controller);
            }
  
            link(currentScope);
  
            currentScope.$emit('$viewContentLoaded');
            if (onloadExp) currentScope.$eval(onloadExp);
  
            if (!angular.isDefined(autoscrollExp) || !autoscrollExp || $scope.$eval(autoscrollExp)) {
              $uiViewScroll(currentEl);
            }
          }
        };
      }
    };
  
    return directive;
  }
  
  angular.module('ui.router.state').directive('uiView', $ViewDirective);
  
  function parseStateRef(ref) {
    var parsed = ref.replace(/\n/g, " ").match(/^([^(]+?)\s*(\((.*)\))?$/);
    if (!parsed || parsed.length !== 4) throw new Error("Invalid state ref '" + ref + "'");
    return { state: parsed[1], paramExpr: parsed[3] || null };
  }
  
  function stateContext(el) {
    var stateData = el.parent().inheritedData('$uiView');
  
    if (stateData && stateData.state && stateData.state.name) {
      return stateData.state;
    }
  }
  
  /**
   * @ngdoc directive
   * @name ui.router.state.directive:ui-sref
   *
   * @requires ui.router.state.$state
   * @requires $timeout
   *
   * @restrict A
   *
   * @description
   * A directive that binds a link (`<a>` tag) to a state. If the state has an associated 
   * URL, the directive will automatically generate & update the `href` attribute via 
   * the {@link ui.router.state.$state#methods_href $state.href()} method. Clicking 
   * the link will trigger a state transition with optional parameters. 
   *
   * Also middle-clicking, right-clicking, and ctrl-clicking on the link will be 
   * handled natively by the browser.
   *
   * You can also use relative state paths within ui-sref, just like the relative 
   * paths passed to `$state.go()`. You just need to be aware that the path is relative
   * to the state that the link lives in, in other words the state that loaded the 
   * template containing the link.
   *
   * @example
   * <pre>
   * <a ui-sref="home">Home</a> | <a ui-sref="about">About</a>
   *
   * <ul>
   *   <li ng-repeat="contact in contacts">
   *     <a ui-sref="contacts.detail({ id: contact.id })">{{ contact.name }}</a>
   *   </li>
   * </ul>
   * </pre>
   *
   * @param {string} ui-sref 'stateName' can be any valid absolute or relative state
   */
  $StateRefDirective.$inject = ['$state', '$timeout'];
  function $StateRefDirective($state, $timeout) {
    return {
      restrict: 'A',
      require: '?^uiSrefActive',
      link: function(scope, element, attrs, uiSrefActive) {
        var ref = parseStateRef(attrs.uiSref);
        var params = null, url = null, base = stateContext(element) || $state.$current;
        var isForm = element[0].nodeName === "FORM";
        var attr = isForm ? "action" : "href", nav = true;
  
        var update = function(newVal) {
          if (newVal) params = newVal;
          if (!nav) return;
  
          var newHref = $state.href(ref.state, params, { relative: base });
  
          if (uiSrefActive) {
            uiSrefActive.$$setStateInfo(ref.state, params);
          }
          if (!newHref) {
            nav = false;
            return false;
          }
          element[0][attr] = newHref;
        };
  
        if (ref.paramExpr) {
          scope.$watch(ref.paramExpr, function(newVal, oldVal) {
            if (newVal !== params) update(newVal);
          }, true);
          params = scope.$eval(ref.paramExpr);
        }
        update();
  
        if (isForm) return;
  
        element.bind("click", function(e) {
          var button = e.which || e.button;
          if ((button === 0 || button == 1) && !e.ctrlKey && !e.metaKey && !e.shiftKey && !element.attr('target')) {
            // HACK: This is to allow ng-clicks to be processed before the transition is initiated:
            $timeout(function() {
              $state.go(ref.state, params, { relative: base });
            });
            e.preventDefault();
          }
        });
      }
    };
  }
  
  /**
   * @ngdoc directive
   * @name ui.router.state.directive:ui-sref-active
   *
   * @requires ui.router.state.$state
   * @requires ui.router.state.$stateParams
   * @requires $interpolate
   *
   * @restrict A
   *
   * @description
   * A directive working alongside ui-sref to add classes to an element when the 
   * related ui-sref directive's state is active, and removing them when it is inactive.
   * The primary use-case is to simplify the special appearance of navigation menus 
   * relying on `ui-sref`, by having the "active" state's menu button appear different,
   * distinguishing it from the inactive menu items.
   *
   * @example
   * <pre>
   * <ul>
   *   <li ui-sref-active="active" class="item active">
   *     <a ui-sref="app.user({user: 'bilbobaggins'})" href="/users/bilbobaggins">@bilbobaggins</a>
   *   </li>
   *   <!-- ... -->
   * </ul>
   * </pre>
   */
  $StateActiveDirective.$inject = ['$state', '$stateParams', '$interpolate'];
  function $StateActiveDirective($state, $stateParams, $interpolate) {
    return {
      restrict: "A",
      controller: ['$scope', '$element', '$attrs', function($scope, $element, $attrs) {
        var state, params, activeClass;
  
        // There probably isn't much point in $observing this
        activeClass = $interpolate($attrs.uiSrefActive || '', false)($scope);
  
        // Allow uiSref to communicate with uiSrefActive
        this.$$setStateInfo = function(newState, newParams) {
          state = $state.get(newState, stateContext($element));
          params = newParams;
          update();
        };
  
        $scope.$on('$stateChangeSuccess', update);
  
        // Update route state
        function update() {
          if ($state.$current.self === state && matchesParams()) {
            $element.addClass(activeClass);
          } else {
            $element.removeClass(activeClass);
          }
        }
  
        function matchesParams() {
          return !params || equalForKeys(params, $stateParams);
        }
      }]
    };
  }
  
  angular.module('ui.router.state')
    .directive('uiSref', $StateRefDirective)
    .directive('uiSrefActive', $StateActiveDirective);
  
  /**
   * @ngdoc filter
   * @name ui.router.state.filter:isState
   *
   * @requires ui.router.state.$state
   *
   * @description
   * Translates to {@link ui.router.state.$state#is $state.is("stateName")}.
   */
  $IsStateFilter.$inject = ['$state'];
  function $IsStateFilter($state) {
    return function(state) {
      return $state.is(state);
    };
  }
  
  /**
   * @ngdoc filter
   * @name ui.router.state.filter:includeByState
   *
   * @requires ui.router.state.$state
   *
   * @description
   * Translates to {@link ui.router.state.$state#includes $state.includes()}.
   */
  $IncludedByStateFilter.$inject = ['$state'];
  function $IncludedByStateFilter($state) {
    return function(state) {
      return $state.includes(state);
    };
  }
  
  angular.module('ui.router.state')
    .filter('isState', $IsStateFilter)
    .filter('includedByState', $IncludedByStateFilter);
  
  /**
   * @ngdoc object
   * @name ui.router.compat.$routeProvider
   *
   * @requires ui.router.state.$stateProvider
   * @requires ui.router.router.$urlRouterProvider
   *
   * @description
   * `$routeProvider` of the `ui.router.compat` module overwrites the existing
   * `routeProvider` from the core. This is done to provide compatibility between
   * the UI Router and the core router.
   *
   * It also provides a `when()` method to register routes that map to certain urls.
   * Behind the scenes it actually delegates either to 
   * {@link ui.router.router.$urlRouterProvider $urlRouterProvider} or to the 
   * {@link ui.router.state.$stateProvider $stateProvider} to postprocess the given 
   * router definition object.
   */
  $RouteProvider.$inject = ['$stateProvider', '$urlRouterProvider'];
  function $RouteProvider(  $stateProvider,    $urlRouterProvider) {
  
    var routes = [];
  
    onEnterRoute.$inject = ['$$state'];
    function onEnterRoute(   $$state) {
      /*jshint validthis: true */
      this.locals = $$state.locals.globals;
      this.params = this.locals.$stateParams;
    }
  
    function onExitRoute() {
      /*jshint validthis: true */
      this.locals = null;
      this.params = null;
    }
  
    this.when = when;
    /**
     * @ngdoc function
     * @name ui.router.compat.$routeProvider#when
     * @methodOf ui.router.compat.$routeProvider
     *
     * @description
     * Registers a route with a given route definition object. The route definition
     * object has the same interface the angular core route definition object has.
     * 
     * @example
     * <pre>
     * var app = angular.module('app', ['ui.router.compat']);
     *
     * app.config(function ($routeProvider) {
     *   $routeProvider.when('home', {
     *     controller: function () { ... },
     *     templateUrl: 'path/to/template'
     *   });
     * });
     * </pre>
     *
     * @param {string} url URL as string
     * @param {object} route Route definition object
     *
     * @return {object} $routeProvider - $routeProvider instance
     */
    function when(url, route) {
      /*jshint validthis: true */
      if (route.redirectTo != null) {
        // Redirect, configure directly on $urlRouterProvider
        var redirect = route.redirectTo, handler;
        if (isString(redirect)) {
          handler = redirect; // leave $urlRouterProvider to handle
        } else if (isFunction(redirect)) {
          // Adapt to $urlRouterProvider API
          handler = function (params, $location) {
            return redirect(params, $location.path(), $location.search());
          };
        } else {
          throw new Error("Invalid 'redirectTo' in when()");
        }
        $urlRouterProvider.when(url, handler);
      } else {
        // Regular route, configure as state
        $stateProvider.state(inherit(route, {
          parent: null,
          name: 'route:' + encodeURIComponent(url),
          url: url,
          onEnter: onEnterRoute,
          onExit: onExitRoute
        }));
      }
      routes.push(route);
      return this;
    }
  
    /**
     * @ngdoc object
     * @name ui.router.compat.$route
     *
     * @requires ui.router.state.$state
     * @requires $rootScope
     * @requires $routeParams
     *
     * @property {object} routes - Array of registered routes.
     * @property {object} params - Current route params as object.
     * @property {string} current - Name of the current route.
     *
     * @description
     * The `$route` service provides interfaces to access defined routes. It also let's
     * you access route params through `$routeParams` service, so you have fully
     * control over all the stuff you would actually get from angular's core `$route`
     * service.
     */
    this.$get = $get;
    $get.$inject = ['$state', '$rootScope', '$routeParams'];
    function $get(   $state,   $rootScope,   $routeParams) {
  
      var $route = {
        routes: routes,
        params: $routeParams,
        current: undefined
      };
  
      function stateAsRoute(state) {
        return (state.name !== '') ? state : undefined;
      }
  
      $rootScope.$on('$stateChangeStart', function (ev, to, toParams, from, fromParams) {
        $rootScope.$broadcast('$routeChangeStart', stateAsRoute(to), stateAsRoute(from));
      });
  
      $rootScope.$on('$stateChangeSuccess', function (ev, to, toParams, from, fromParams) {
        $route.current = stateAsRoute(to);
        $rootScope.$broadcast('$routeChangeSuccess', stateAsRoute(to), stateAsRoute(from));
        copy(toParams, $route.params);
      });
  
      $rootScope.$on('$stateChangeError', function (ev, to, toParams, from, fromParams, error) {
        $rootScope.$broadcast('$routeChangeError', stateAsRoute(to), stateAsRoute(from), error);
      });
  
      return $route;
    }
  }
  
  angular.module('ui.router.compat')
    .provider('$route', $RouteProvider)
    .directive('ngView', $ViewDirective);
  })(window, window.angular);