[Status] Add status tracking

Add status tracking for domain objects, and decoration of
representations with status-related classes. Supports WTD-1575
by allowing pending state of taxonomy to be handled by
status tracking and custom CSS, instead of by overriding platform
templates.

platform/status/src/StatusService.js

@@ -0,0 +1,62 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2014-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define*/
+
+define(
+    [],
+    function () {
+        'use strict';
+
+        var STATUS_PREFIX = "status:";
+
+        function StatusService(topic) {
+            this.statusTable = {};
+            this.topic = topic;
+        }
+
+        /**
+         * @returns {string[]} an array containing all status flags currently
+         *          applicable to the object with this identifier
+         */
+        StatusService.prototype.getStatus = function (id) {
+            return this.statusTable[id] || [];
+        };
+
+        StatusService.prototype.setStatus = function (id, status, state) {
+            this.statusTable[id] = this.statusTable[id] || [];
+            this.statusTable[id] = this.statusTable[id].filter(function (s) {
+                return s !== status;
+            });
+            if (state) {
+                this.statusTable[id].push(status);
+            }
+            this.topic(STATUS_PREFIX + id).notify(this.statusTable[id]);
+        };
+
+        StatusService.prototype.listen = function (id, callback) {
+            return this.topic(STATUS_PREFIX + id).listen(callback);
+        };
+
+        return StatusService;
+
+    }
+);