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4a9744e916
* touch every file on earth to update copyright * update one more * pick up 2017 2018 2019 * revert fuchs copyright * revert other bundle copyrights * somehow missed one
101 lines
2.8 KiB
JavaScript
101 lines
2.8 KiB
JavaScript
/*****************************************************************************
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* Open MCT, Copyright (c) 2014-2022, United States Government
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* as represented by the Administrator of the National Aeronautics and Space
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* Administration. All rights reserved.
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*
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* Open MCT is licensed under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0.
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* Open MCT includes source code licensed under additional open source
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* licenses. See the Open Source Licenses file (LICENSES.md) included with
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* this source code distribution or the Licensing information page available
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* at runtime from the About dialog for additional information.
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*****************************************************************************/
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export default class LocalStorageObjectProvider {
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constructor(spaceKey = 'mct') {
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this.localStorage = window.localStorage;
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this.spaceKey = spaceKey;
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this.initializeSpace(spaceKey);
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}
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get(identifier) {
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if (this.getSpaceAsObject()[identifier.key] !== undefined) {
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const persistedModel = this.getSpaceAsObject()[identifier.key];
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const domainObject = {
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identifier,
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...persistedModel
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};
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return Promise.resolve(domainObject);
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} else {
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return Promise.resolve(undefined);
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}
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}
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create(object) {
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return this.persistObject(object);
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}
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update(object) {
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return this.persistObject(object);
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}
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/**
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* @private
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*/
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persistObject(domainObject) {
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let space = this.getSpaceAsObject();
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space[domainObject.identifier.key] = domainObject;
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this.persistSpace(space);
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return Promise.resolve(true);
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}
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/**
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* @private
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*/
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persistSpace(space) {
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this.localStorage[this.spaceKey] = JSON.stringify(space);
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}
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/**
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* @private
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*/
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getSpace() {
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return this.localStorage[this.spaceKey];
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}
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/**
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* @private
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*/
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getSpaceAsObject() {
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return JSON.parse(this.getSpace());
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}
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/**
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* @private
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*/
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initializeSpace() {
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if (this.isEmpty()) {
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this.localStorage[this.spaceKey] = JSON.stringify({});
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}
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}
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/**
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* @private
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*/
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isEmpty() {
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return this.getSpace() === undefined;
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}
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}
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