wwbsr/node_modules/highcharts/es-modules/modules/sonification/Earcon.js

/* *
 *
 *  (c) 2009-2020 Øystein Moseng
 *
 *  Earcons for the sonification module in Highcharts.
 *
 *  License: www.highcharts.com/license
 *
 *  !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
 *
 * */
'use strict';
import H from '../../Core/Globals.js';
import U from '../../Core/Utilities.js';
var error = U.error, merge = U.merge, pick = U.pick, uniqueKey = U.uniqueKey;
/**
 * Define an Instrument and the options for playing it.
 *
 * @requires module:modules/sonification
 *
 * @interface Highcharts.EarconInstrument
 */ /**
* An instrument instance or the name of the instrument in the
* Highcharts.sonification.instruments map.
* @name Highcharts.EarconInstrument#instrument
* @type {string|Highcharts.Instrument}
*/ /**
* The options to pass to Instrument.play.
* @name Highcharts.EarconInstrument#playOptions
* @type {Highcharts.InstrumentPlayOptionsObject}
*/
/**
 * Options for an Earcon.
 *
 * @requires module:modules/sonification
 *
 * @interface Highcharts.EarconOptionsObject
 */ /**
* The instruments and their options defining this earcon.
* @name Highcharts.EarconOptionsObject#instruments
* @type {Array<Highcharts.EarconInstrument>}
*/ /**
* The unique ID of the Earcon. Generated if not supplied.
* @name Highcharts.EarconOptionsObject#id
* @type {string|undefined}
*/ /**
* Global panning of all instruments. Overrides all panning on individual
* instruments. Can be a number between -1 and 1.
* @name Highcharts.EarconOptionsObject#pan
* @type {number|undefined}
*/ /**
* Master volume for all instruments. Volume settings on individual instruments
* can still be used for relative volume between the instruments. This setting
* does not affect volumes set by functions in individual instruments. Can be a
* number between 0 and 1. Defaults to 1.
* @name Highcharts.EarconOptionsObject#volume
* @type {number|undefined}
*/ /**
* Callback function to call when earcon has finished playing.
* @name Highcharts.EarconOptionsObject#onEnd
* @type {Function|undefined}
*/
/* eslint-disable no-invalid-this, valid-jsdoc */
/**
 * The Earcon class. Earcon objects represent a certain sound consisting of
 * one or more instruments playing a predefined sound.
 *
 * @sample highcharts/sonification/earcon/
 *         Using earcons directly
 *
 * @requires module:modules/sonification
 *
 * @class
 * @name Highcharts.Earcon
 *
 * @param {Highcharts.EarconOptionsObject} options
 *        Options for the Earcon instance.
 */
function Earcon(options) {
    this.init(options || {});
}
Earcon.prototype.init = function (options) {
    this.options = options;
    if (!this.options.id) {
        this.options.id = this.id = uniqueKey();
    }
    this.instrumentsPlaying = {};
};
/**
 * Play the earcon, optionally overriding init options.
 *
 * @sample highcharts/sonification/earcon/
 *         Using earcons directly
 *
 * @function Highcharts.Earcon#sonify
 *
 * @param {Highcharts.EarconOptionsObject} options
 *        Override existing options.
 *
 * @return {void}
 */
Earcon.prototype.sonify = function (options) {
    var playOptions = merge(this.options, options);
    // Find master volume/pan settings
    var masterVolume = pick(playOptions.volume, 1), masterPan = playOptions.pan, earcon = this, playOnEnd = options && options.onEnd, masterOnEnd = earcon.options.onEnd;
    // Go through the instruments and play them
    playOptions.instruments.forEach(function (opts) {
        var instrument = typeof opts.instrument === 'string' ?
            H.sonification.instruments[opts.instrument] : opts.instrument, instrumentOpts = merge(opts.playOptions), instrOnEnd, instrumentCopy, copyId = '';
        if (instrument && instrument.play) {
            if (opts.playOptions) {
                instrumentOpts.pan = pick(masterPan, instrumentOpts.pan);
                // Handle onEnd
                instrOnEnd = instrumentOpts.onEnd;
                instrumentOpts.onEnd = function () {
                    delete earcon.instrumentsPlaying[copyId];
                    if (instrOnEnd) {
                        instrOnEnd.apply(this, arguments);
                    }
                    if (!Object.keys(earcon.instrumentsPlaying).length) {
                        if (playOnEnd) {
                            playOnEnd.apply(this, arguments);
                        }
                        if (masterOnEnd) {
                            masterOnEnd.apply(this, arguments);
                        }
                    }
                };
                // Play the instrument. Use a copy so we can play multiple at
                // the same time.
                instrumentCopy = instrument.copy();
                instrumentCopy.setMasterVolume(masterVolume);
                copyId = instrumentCopy.id;
                earcon.instrumentsPlaying[copyId] = instrumentCopy;
                instrumentCopy.play(instrumentOpts);
            }
        }
        else {
            error(30);
        }
    });
};
/**
 * Cancel any current sonification of the Earcon. Calls onEnd functions.
 *
 * @function Highcharts.Earcon#cancelSonify
 *
 * @param {boolean} [fadeOut=false]
 *        Whether or not to fade out as we stop. If false, the earcon is
 *        cancelled synchronously.
 *
 * @return {void}
 */
Earcon.prototype.cancelSonify = function (fadeOut) {
    var playing = this.instrumentsPlaying, instrIds = playing && Object.keys(playing);
    if (instrIds && instrIds.length) {
        instrIds.forEach(function (instr) {
            playing[instr].stop(!fadeOut, null, 'cancelled');
        });
        this.instrumentsPlaying = {};
    }
};
export default Earcon;