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/*****************************************************************************
* Open MCT, Copyright (c) 2014-2022, 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.
*****************************************************************************/
import TimeContext from "./TimeContext";
/**
* The GlobalContext handles getting and setting time of the openmct application in general.
* Views will use this context unless they specify an alternate/independent time context
*/
class GlobalTimeContext extends TimeContext {
constructor() {
super();
//The Time Of Interest
this.toi = undefined;
}
/**
* Get or set the start and end time of the time conductor. Basic validation
* of bounds is performed.
*
* @param {module:openmct.TimeAPI~TimeConductorBounds} newBounds
* @throws {Error} Validation error
* @fires module:openmct.TimeAPI~bounds
* @returns {module:openmct.TimeAPI~TimeConductorBounds}
* @memberof module:openmct.TimeAPI#
* @method bounds
*/
bounds(newBounds) {
if (arguments.length > 0) {
super.bounds.call(this, ...arguments);
// If a bounds change results in a TOI outside of the current
// bounds, unset it
if (this.toi < newBounds.start || this.toi > newBounds.end) {
this.timeOfInterest(undefined);
}
}
//Return a copy to prevent direct mutation of time conductor bounds.
return JSON.parse(JSON.stringify(this.boundsVal));
}
/**
* Update bounds based on provided time and current offsets
* @private
* @param {number} timestamp A time from which bounds will be calculated
* using current offsets.
*/
tick(timestamp) {
super.tick.call(this, ...arguments);
// If a bounds change results in a TOI outside of the current
// bounds, unset it
if (this.toi < this.boundsVal.start || this.toi > this.boundsVal.end) {
this.timeOfInterest(undefined);
}
}
/**
* Get or set the Time of Interest. The Time of Interest is a single point
* in time, and constitutes the temporal focus of application views. It can
* be manipulated by the user from the time conductor or from other views.
* The time of interest can effectively be unset by assigning a value of
* 'undefined'.
* @fires module:openmct.TimeAPI~timeOfInterest
* @param newTOI
* @returns {number} the current time of interest
* @memberof module:openmct.TimeAPI#
* @method timeOfInterest
*/
timeOfInterest(newTOI) {
if (arguments.length > 0) {
this.toi = newTOI;
/**
* The Time of Interest has moved.
* @event timeOfInterest
* @memberof module:openmct.TimeAPI~
* @property {number} Current time of interest
*/
this.emit('timeOfInterest', this.toi);
}
return this.toi;
}
}
export default GlobalTimeContext;
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