@arcgis/core/core/workers/WorkerHandle.js

ArcGIS Maps SDK for JavaScript: A complete 2D and 3D mapping and data visualization API

/*
All material copyright ESRI, All Rights Reserved, unless otherwise specified.
See https://js.arcgis.com/4.33/esri/copyright.txt for details.
*/
import{remove as e}from"../arrayUtils.js";import{makeHandle as t}from"../handleUtils.js";import s from"../Logger.js";import{throwIfAborted as r}from"../promiseUtils.js";import{open as i}from"./workers.js";class h{constructor(e,t,r,h,o={}){this._mainMethod=t,this._transferLists=r,this._listeners=[],this._promise=i(e,{...o,schedule:h}).then((e=>{if(void 0===this._thread){this._thread=e,this._promise=null,o.hasInitialize&&this.broadcast({},"initialize");for(const e of this._listeners)this._connectListener(e)}else e.close()})),this._promise.catch((t=>s.getLogger("esri.core.workers.WorkerHandle").error(`Failed to initialize ${e} worker: ${t}`)))}on(s,r){const i={removed:!1,eventName:s,callback:r,threadHandle:null};return this._listeners.push(i),this._connectListener(i),t((()=>{i.removed=!0,e(this._listeners,i),this._thread&&null!=i.threadHandle&&i.threadHandle.remove()}))}destroy(){this._thread&&(this._thread.close(),this._thread=null),this._promise=null,this._listeners.length=0,this._transferLists={}}invoke(e,t,s){return this.invokeMethod(this._mainMethod,e,t,s)}invokeMethod(e,t,s,i){if(this._thread){const r=this._transferLists[e],h=r?r(t):[];return this._thread.invoke(e,t,{transferList:h,signal:s,priority:i})}return this._promise?this._promise.then((()=>(r(s),this.invokeMethod(e,t,s)))):Promise.reject(null)}broadcast(e,t){return this._thread?Promise.all(this._thread.broadcast(t,e)).then((()=>{})):this._promise?this._promise.then((()=>this.broadcast(e,t))):Promise.reject()}get promise(){return this._promise}_connectListener(e){this._thread&&this._thread.on(e.eventName,e.callback).then((t=>{e.removed||(e.threadHandle=t)}))}}export{h as WorkerHandle};