Andrew Zambazos
105 lines
3.4 KiB
JavaScript
105 lines
3.4 KiB
JavaScript
/*
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* Copyright (C) 2016 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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WI.FormatterWorkerProxy = class FormatterWorkerProxy
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{
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constructor()
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{
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this._formatterWorker = new Worker("Workers/Formatter/FormatterWorker.js");
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this._formatterWorker.addEventListener("message", this._handleMessage.bind(this));
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this._nextCallId = 1;
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this._callbacks = new Map;
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}
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// Static
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static singleton()
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{
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if (!FormatterWorkerProxy.instance)
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FormatterWorkerProxy.instance = new FormatterWorkerProxy;
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return FormatterWorkerProxy.instance;
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}
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// Actions
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formatJavaScript(sourceText, isModule, indentString, includeSourceMapData)
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{
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this.performAction("formatJavaScript", ...arguments);
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}
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formatCSS(sourceText, indentString, includeSourceMapData)
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{
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this.performAction("formatCSS", ...arguments);
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}
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formatHTML(sourceText, indentString, includeSourceMapData)
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{
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this.performAction("formatHTML", ...arguments);
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}
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formatXML(sourceText, indentString, includeSourceMapData)
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{
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this.performAction("formatXML", ...arguments);
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}
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// Public
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performAction(actionName)
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{
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let callId = this._nextCallId++;
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let callback = arguments[arguments.length - 1];
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let actionArguments = Array.prototype.slice.call(arguments, 1, arguments.length - 1);
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console.assert(typeof actionName === "string", "performAction should always have an actionName");
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console.assert(typeof callback === "function", "performAction should always have a callback");
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this._callbacks.set(callId, callback);
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this._postMessage({callId, actionName, actionArguments});
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}
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// Private
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_postMessage()
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{
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this._formatterWorker.postMessage(...arguments);
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}
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_handleMessage(event)
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{
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let data = event.data;
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// Action response.
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if (data.callId) {
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let callback = this._callbacks.get(data.callId);
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this._callbacks.delete(data.callId);
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callback(data.result);
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return;
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}
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console.error("Unexpected FormatterWorker message", data);
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}
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};
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