Sakurai/pdf.js
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Small refactoring of fallback code to fake worker.

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This commit is contained in:
Steffen Märcker 2011-12-28 15:21:32 +01:00
parent fdcc4ca590
commit c2b42b1cfc
1 changed files with 22 additions and 30 deletions
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52
src/core.js
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@ -579,42 +579,34 @@ var PDFDoc = (function PDFDocClosure() {
throw 'No PDFJS.workerSrc specified';
}
var worker;
try {
worker = new Worker(workerSrc);
} catch (e) {
// Some versions of FF can't create a worker on localhost, see:
// https://bugzilla.mozilla.org/show_bug.cgi?id=683280
globalScope.PDFJS.disableWorker = true;
this.setupFakeWorker();
return;
}
var worker = new Worker(workerSrc);
var messageHandler = new MessageHandler('main', worker);
// Tell the worker the file it was created from.
messageHandler.send('workerSrc', workerSrc);
messageHandler.on('test', function pdfDocTest(supportTypedArray) {
if (supportTypedArray) {
this.worker = worker;
this.setupMessageHandler(messageHandler);
} else {
globalScope.PDFJS.disableWorker = true;
this.setupFakeWorker();
}
}.bind(this));
var messageHandler = new MessageHandler('main', worker);
// Tell the worker the file it was created from.
messageHandler.send('workerSrc', workerSrc);
messageHandler.on('test', function pdfDocTest(supportTypedArray) {
if (supportTypedArray) {
this.worker = worker;
this.setupMessageHandler(messageHandler);
} else {
this.setupFakeWorker();
}
}.bind(this));
var testObj = new Uint8Array(1);
// Some versions of Opera throw a DATA_CLONE_ERR on serializing the typed array.
// If such an error occurs, we fallback to a faked worker.
try {
var testObj = new Uint8Array(1);
// Some versions of Opera throw a DATA_CLONE_ERR on serializing the typed array.
messageHandler.send('test', testObj);
} catch (e) {
this.setupFakeWorker();
}
} else {
this.setupFakeWorker();
return;
} catch (e) {}
}
// Either workers are disabled, not suppored or have thrown an exception.
// Thus, we fallback to a faked worker.
globalScope.PDFJS.disableWorker = true;
this.setupFakeWorker();
}
PDFDoc.prototype = {