META-INF.dirigible.dev-tools.common.Worker.js Maven / Gradle / Ivy
/*
* Copyright (C) 2014 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @unrestricted
*/
export class WorkerWrapper {
/**
* @param {string} appName
*/
constructor(appName) {
const url = appName + '.js' + location.search;
/** @type {!Promise} */
this._workerPromise = new Promise(fulfill => {
const worker = new Worker(url, {type: 'module'});
worker.onmessage = event => {
console.assert(event.data === 'workerReady');
worker.onmessage = null;
fulfill(worker);
};
});
}
/**
* @param {*} message
*/
postMessage(message) {
this._workerPromise.then(worker => {
if (!this._disposed) {
worker.postMessage(message);
}
});
}
dispose() {
this._disposed = true;
this._workerPromise.then(worker => worker.terminate());
}
terminate() {
this.dispose();
}
/**
* @param {?function(!MessageEvent):void} listener
*/
set onmessage(listener) {
this._workerPromise.then(worker => worker.onmessage = listener);
}
/**
* @param {?function(!Event):void} listener
*/
set onerror(listener) {
this._workerPromise.then(worker => worker.onerror = listener);
}
}