[Entanglement] Add policies for Copy and Move

...to ensure that these are only performed on creatable and
mutable targets, respectively.

platform/entanglement/src/policies/CopyPolicy.js

@@ -0,0 +1,57 @@
+/*****************************************************************************
+ * 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';
+
+    /**
+     * Disallow duplication when the object to be duplicated is not
+     * creatable.
+     * @constructor
+     * @implements {Policy}
+     * @memberof platform/entanglement
+     */
+    function CopyPolicy() {
+    }
+
+    function allowCreation(domainObject) {
+        var type = domainObject && domainObject.getCapability('type');
+        return !!(type && type.hasFeature('creation'));
+    }
+
+    function selectedObject(context) {
+        return context.selectedObject || context.domainObject;
+    }
+
+    CopyPolicy.prototype.allow = function (action, context) {
+        var key = action.getMetadata().key;
+
+        if (key === 'copy') {
+            return allowCreation(selectedObject(context));
+        }
+
+        return true;
+    };
+
+    return CopyPolicy;
+});

platform/entanglement/src/policies/MovePolicy.js

@@ -0,0 +1,63 @@
+/*****************************************************************************
+ * 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';
+
+    /**
+     * Disallow moves when either the parent or the child are not
+     * modifiable by users.
+     * @constructor
+     * @implements {Policy}
+     * @memberof platform/entanglement
+     */
+    function MovePolicy() {
+    }
+
+    function parentOf(domainObject) {
+        var context = domainObject.getCapability('context');
+        return context && context.getParent();
+    }
+
+    function allowMutation(domainObject) {
+        var type = domainObject && domainObject.getCapability('type');
+        return !!(type && type.hasFeature('creation'));
+    }
+
+    function selectedObject(context) {
+        return context.selectedObject || context.domainObject;
+    }
+
+    MovePolicy.prototype.allow = function (action, context) {
+        var key = action.getMetadata().key;
+
+        if (key === 'move') {
+            return allowMutation(selectedObject(context)) &&
+                allowMutation(parentOf(selectedObject(context)));
+        }
+
+        return true;
+    };
+
+    return MovePolicy;
+});