openmct/platform/features/layout/src/LayoutCompositionPolicy.js
2015-08-12 13:45:48 -07:00

52 lines
1.9 KiB
JavaScript

/*****************************************************************************
* 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";
/**
* Defines composition policy for Display Layout objects.
* They cannot contain folders.
* @constructor
* @memberof platform/features/layout
* @implements {Policy.<View, DomainObject>}
*/
function LayoutCompositionPolicy() {
}
LayoutCompositionPolicy.prototype.allow = function (candidate, context) {
var isFolderInLayout =
candidate &&
context &&
candidate.instanceOf('layout') &&
context.instanceOf('folder');
return !isFolderInLayout;
};
return LayoutCompositionPolicy;
}
);