openmct/platform/commonUI/edit/src/services/NestedTransaction.js
2016-08-08 13:49:34 -07:00

49 lines
2.0 KiB
JavaScript

/*****************************************************************************
* Open MCT, Copyright (c) 2014-2016, 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(['./Transaction'], function (Transaction) {
/**
* A nested transaction is a transaction which takes place in the context
* of a larger parent transaction. It becomes part of the parent
* transaction when (and only when) committed.
* @param parent
* @constructor
* @extends {platform/commonUI/edit/services.Transaction}
* @memberof platform/commonUI/edit/services
*/
function NestedTransaction(parent) {
this.parent = parent;
Transaction.call(this, parent.$log);
}
NestedTransaction.prototype = Object.create(Transaction.prototype);
NestedTransaction.prototype.commit = function () {
this.parent.add(
Transaction.prototype.commit.bind(this),
Transaction.prototype.cancel.bind(this)
);
return Promise.resolve(true);
};
return NestedTransaction;
});