/* eslint-disable */
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/*
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*
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* All objects in the event handling chain should inherit from this class
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*
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*/
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import Event from './events';
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class EventHandler {
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constructor(wfs, ...events) {
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this.wfs = wfs;
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this.onEvent = this.onEvent.bind(this);
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this.handledEvents = events;
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this.useGenericHandler = true;
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this.registerListeners();
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}
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destroy() {
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this.unregisterListeners();
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}
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isEventHandler() {
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return typeof this.handledEvents === 'object' && this.handledEvents.length && typeof this.onEvent === 'function';
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}
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registerListeners() {
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if (this.isEventHandler()) {
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this.handledEvents.forEach(function(event) {
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if (event === 'wfsEventGeneric') {
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//throw new Error('Forbidden event name: ' + event);
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}
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this.wfs.on(event, this.onEvent);
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}.bind(this));
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}
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}
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unregisterListeners() {
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if (this.isEventHandler()) {
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this.handledEvents.forEach(function(event) {
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this.wfs.off(event, this.onEvent);
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}.bind(this));
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}
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}
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/**
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* arguments: event (string), data (any)
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*/
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onEvent(event, data) {
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this.onEventGeneric(event, data);
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}
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onEventGeneric(event, data) {
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var eventToFunction = function(event, data) {
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var funcName = 'on' + event.replace('wfs', '');
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if (typeof this[funcName] !== 'function') {
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//throw new Error(`Event ${event} has no generic handler in this ${this.constructor.name} class (tried ${funcName})`);
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}
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return this[funcName].bind(this, data);
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};
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try {
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eventToFunction.call(this, event, data).call();
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} catch (err) {
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console.log(`internal error happened while processing ${event}:${err.message}`);
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// this.hls.trigger(Event.ERROR, {type: ErrorTypes.OTHER_ERROR, details: ErrorDetails.INTERNAL_EXCEPTION, fatal: false, event : event, err : err});
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}
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}
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}
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export default EventHandler;
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