feat(filter): allow map of filters to be registered

This feature adds similar functionality to what `$ControllerProvider.register`
and `$CompileProvider.directive` currently provide by allowing a map of filter
name/factories to be passed as the sole argument to `$FilterProvider.register`
to register all of the specified filters.

Closes #4036
Closes #4091

1 files changed, 19 insertions, 2 deletions

diff --git a/src/ng/filter.js b/src/ng/filter.js
index 5c6ffd0f..f41efbd9 100644
--- a/src/ng/filter.js
+++ b/src/ng/filter.js
@@ -78,15 +78,32 @@ $FilterProvider.$inject = ['$provide'];
 function $FilterProvider($provide) {
   var suffix = 'Filter';
 
+  /**
+   * @ngdoc function
+   * @name ng.$controllerProvider#register
+   * @methodOf ng.$controllerProvider
+   * @param {string|Object} name Name of the filter function, or an object map of filters where
+   *    the keys are the filter names and the values are the filter factories.
+   * @returns {Object} Registered filter instance, or if a map of filters was provided then a map
+   *    of the registered filter instances.
+   */
   function register(name, factory) {
-    return $provide.factory(name + suffix, factory);
+    if(isObject(name)) {
+      var filters = {};
+      forEach(name, function(filter, key) {
+        filters[key] = register(key, filter);
+      });
+      return filters;
+    } else {
+      return $provide.factory(name + suffix, factory);
+    }
   }
   this.register = register;
 
   this.$get = ['$injector', function($injector) {
     return function(name) {
       return $injector.get(name + suffix);
-    }
+    };
   }];
 
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