Function $RootScopeProvider

test/angular/1.3/angular.js:13709–14970

* @ngdoc service * @name $rootScope * @description * * Every application has a single root ng.$rootScope.Scope scope. * All other scopes are descendant scopes of the root scope. Scopes provide separation * between the model and the view, via a mechanism for watching the model for chang

()

 * {@link guide/scope developer guide on scopes}.
 */
function $RootScopeProvider() {
  var TTL = 10;
  var $rootScopeMinErr = minErr('$rootScope');
  var lastDirtyWatch = null;
  var applyAsyncId = null;

  this.digestTtl = function(value) {
    if (arguments.length) {
      TTL = value;
    }
    return TTL;
  };

  function createChildScopeClass(parent) {
    function ChildScope() {
      this.$$watchers = this.$$nextSibling =
          this.$$childHead = this.$$childTail = null;
      this.$$listeners = {};
      this.$$listenerCount = {};
      this.$id = nextUid();
      this.$$ChildScope = null;
    }
    ChildScope.prototype = parent;
    return ChildScope;
  }

  this.$get = ['$injector', '$exceptionHandler', '$parse', '$browser',
      function($injector, $exceptionHandler, $parse, $browser) {

    function destroyChildScope($event) {
        $event.currentScope.$$destroyed = true;
    }

    /**
     * @ngdoc type
     * @name $rootScope.Scope
     *
     * @description
     * A root scope can be retrieved using the {@link ng.$rootScope $rootScope} key from the
     * {@link auto.$injector $injector}. Child scopes are created using the
     * {@link ng.$rootScope.Scope#$new $new()} method. (Most scopes are created automatically when
     * compiled HTML template is executed.) See also the {@link guide/scope Scopes guide} for
     * an in-depth introduction and usage examples.
     *
     *
     * # Inheritance
     * A scope can inherit from a parent scope, as in this example:
     * ```js
         var parent = $rootScope;
         var child = parent.$new();

         parent.salutation = "Hello";
         expect(child.salutation).toEqual('Hello');

         child.salutation = "Welcome";
         expect(child.salutation).toEqual('Welcome');
         expect(parent.salutation).toEqual('Hello');
     * ```