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Init PDFWorker via MesssagePort.

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This commit is contained in:
Yury Delendik 2017-02-24 13:33:18 -06:00
parent cada411af4
commit 51767d63fe
5 changed files with 52 additions and 4 deletions
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24
src/display/api.js
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@ -264,8 +264,10 @@ function getDocument(src, pdfDataRangeTransport,
var CMapReaderFactory = params.CMapReaderFactory || DOMCMapReaderFactory;
if (!worker) {
// Worker was not provided -- creating and owning our own.
worker = new PDFWorker();
// Worker was not provided -- creating and owning our own. If message port
// is specified in global settings, using it.
var workerPort = getDefaultSetting('workerPort');
worker = workerPort ? new PDFWorker(null, workerPort) : new PDFWorker();
task._worker = worker;
}
var docId = task.docId;
@ -1227,7 +1229,7 @@ var PDFWorker = (function PDFWorkerClosure() {
return URL.createObjectURL(new Blob([wrapper]));
}
function PDFWorker(name) {
function PDFWorker(name, port) {
this.name = name;
this.destroyed = false;
@ -1235,6 +1237,12 @@ var PDFWorker = (function PDFWorkerClosure() {
this._port = null;
this._webWorker = null;
this._messageHandler = null;
if (port) {
this._initializeFromPort(port);
return;
}
this._initialize();
}
@ -1251,6 +1259,16 @@ var PDFWorker = (function PDFWorkerClosure() {
return this._messageHandler;
},
_initializeFromPort: function PDFWorker_initializeFromPort(port) {
this._port = port;
this._messageHandler = new MessageHandler('main', 'worker', port);
this._messageHandler.on('ready', function () {
// Ignoring 'ready' event -- MessageHandler shall be already initialized
// and ready to accept the messages.
});
this._readyCapability.resolve();
},
_initialize: function PDFWorker_initialize() {
// If worker support isn't disabled explicit and the browser has worker
// support, create a new web worker and test if it/the browser fulfills