text: /*****************************************************************************
   * Open MCT, Copyright (c) 2014-2018, United States Government
   * as represented by the Administrator of the National Aeronautics and Space
   * Administration. All rights reserved.
   *
   * Open MCT 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 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.
   *****************************************************************************/
  
  
  define(
      function () {
          /**
           * MoveService provides an interface for moving objects from one
           * location to another.  It also provides a method for determining if
           * an object can be copied to a specific location.
           * @constructor
           * @memberof platform/entanglement
           * @implements {platform/entanglement.AbstractComposeService}
           */
          function MoveService(policyService, linkService) {
              this.policyService = policyService;
              this.linkService = linkService;
          }
  
          MoveService.prototype.validate = function (object, parentCandidate) {
              var currentParent = object
                  .getCapability('context')
                  .getParent();
  
              if (!parentCandidate || !parentCandidate.getId) {
                  return false;
              }
              if (parentCandidate.getId() === currentParent.getId()) {
                  return false;
              }
              if (parentCandidate.getId() === object.getId()) {
                  return false;
              }
              if (parentCandidate.getModel().composition.indexOf(object.getId()) !== -1) {
                  return false;
              }
              return this.policyService.allow(
                  "composition",
                  parentCandidate,
                  object
              );
          };
  
          MoveService.prototype.perform = function (object, parentObject) {
              function relocate(objectInNewContext) {
                  var newLocationCapability = objectInNewContext
                          .getCapability('location'),
                      oldLocationCapability = object
                          .getCapability('location');
  
                  if (!newLocationCapability ||
                          !oldLocationCapability) {
                      return;
                  }
  
                  if (oldLocationCapability.isOriginal()) {
                      return newLocationCapability.setPrimaryLocation(
                          newLocationCapability
                              .getContextualLocation()
                      );
                  }
              }
  
              if (!this.validate(object, parentObject)) {
                  throw new Error(
                      "Tried to move objects without validating first."
                  );
              }
  
              return this.linkService
                  .perform(object, parentObject)
                  .then(relocate)
                  .then(function () {
                      return object
                          .getCapability('action')
                          .perform('remove');
                  });
          };
  
          return MoveService;
      }
  );
  
  