1 files changed, 45 insertions, 0 deletions
diff --git a/js/vendor/angular-ui/modules/filters/unique/unique.js b/js/vendor/angular-ui/modules/filters/unique/unique.js
new file mode 100644
index 000000000..382712297
--- /dev/null
+++ b/js/vendor/angular-ui/modules/filters/unique/unique.js
@@ -0,0 +1,45 @@
+/**
+ * Filters out all duplicate items from an array by checking the specified key
+ * @param [key] {string} the name of the attribute of each object to compare for uniqueness
+ if the key is empty, the entire object will be compared
+ if the key === false then no filtering will be performed
+ * @return {array}
+ */
+angular.module('ui.filters').filter('unique', function () {
+
+  return function (items, filterOn) {
+
+    if (filterOn === false) {
+      return items;
+    }
+
+    if ((filterOn || angular.isUndefined(filterOn)) && angular.isArray(items)) {
+      var hashCheck = {}, newItems = [];
+
+      var extractValueToCompare = function (item) {
+        if (angular.isObject(item) && angular.isString(filterOn)) {
+          return item[filterOn];
+        } else {
+          return item;
+        }
+      };
+
+      angular.forEach(items, function (item) {
+        var valueToCheck, isDuplicate = false;
+
+        for (var i = 0; i < newItems.length; i++) {
+          if (angular.equals(extractValueToCompare(newItems[i]), extractValueToCompare(item))) {
+            isDuplicate = true;
+            break;
+          }
+        }
+        if (!isDuplicate) {
+          newItems.push(item);
+        }
+
+      });
+      items = newItems;
+    }
+    return items;
+  };
+});