mirror of
https://github.com/nasa/openmct.git
synced 2025-06-18 23:28:14 +00:00
68 lines
2.2 KiB
JavaScript
68 lines
2.2 KiB
JavaScript
/*****************************************************************************
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* Open MCT, Copyright (c) 2014-2024, 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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import EventEmitter from 'EventEmitter';
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export default class StatusAPI extends EventEmitter {
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constructor(openmct) {
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super();
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this._openmct = openmct;
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this._statusCache = {};
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this.get = this.get.bind(this);
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this.set = this.set.bind(this);
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this.observe = this.observe.bind(this);
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}
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get(identifier) {
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let keyString = this._openmct.objects.makeKeyString(identifier);
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return this._statusCache[keyString];
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}
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set(identifier, value) {
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let keyString = this._openmct.objects.makeKeyString(identifier);
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this._statusCache[keyString] = value;
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this.emit(keyString, value);
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}
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delete(identifier) {
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let keyString = this._openmct.objects.makeKeyString(identifier);
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this._statusCache[keyString] = undefined;
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this.emit(keyString, undefined);
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delete this._statusCache[keyString];
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}
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observe(identifier, callback) {
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let key = this._openmct.objects.makeKeyString(identifier);
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this.on(key, callback);
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return () => {
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this.off(key, callback);
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};
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}
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}
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