openmct/platform/forms/src/controllers/CompositeController.js
Victor Woeltjen 10863514cb [Licenses] Add license headers
WTD-1051.
2015-05-13 16:43:30 -07:00

69 lines
2.8 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";
/**
* The CompositeController supports the "composite" control type,
* which provides an array of other controls. It is used specifically
* to support validation when a particular row is not marked as
* required; in this case, empty input should be allowed, but partial
* input (where some but not all of the composite controls have been
* filled in) should be disallowed. This is enforced in the template
* by an ng-required directive, but that is supported by the
* isNonEmpty check that this controller provides.
* @constructor
*/
function CompositeController() {
// Check if an element is defined; the map step of isNonEmpty
function isDefined(element) {
return typeof element !== 'undefined';
}
// Boolean or; the reduce step of isNonEmpty
function or(a, b) {
return a || b;
}
return {
/**
* Check if an array contains anything other than
* undefined elements.
* @param {Array} value the array to check
* @returns {boolean} true if any non-undefined
* element is in the array
*/
isNonEmpty: function (value) {
return Array.isArray(value) &&
value.map(isDefined).reduce(or, false);
}
};
}
return CompositeController;
}
);