gecko-dev/toolkit/components/reader/ReaderWorker.js

51 lines
1.4 KiB
JavaScript

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
/**
* A worker dedicated to handle parsing documents for reader view.
*/
importScripts("resource://gre/modules/workers/require.js",
"resource://gre/modules/reader/JSDOMParser.js",
"resource://gre/modules/reader/Readability.js");
let PromiseWorker = require("resource://gre/modules/workers/PromiseWorker.js");
const DEBUG = false;
let worker = new PromiseWorker.AbstractWorker();
worker.dispatch = function(method, args = []) {
return Agent[method](...args);
};
worker.postMessage = function(result, ...transfers) {
self.postMessage(result, ...transfers);
};
worker.close = function() {
self.close();
};
worker.log = function(...args) {
if (DEBUG) {
dump("ReaderWorker: " + args.join(" ") + "\n");
}
};
self.addEventListener("message", msg => worker.handleMessage(msg));
let Agent = {
/**
* Parses structured article data from a document.
*
* @param {object} uri URI data for the document.
* @param {string} serializedDoc The serialized document.
*
* @return {object} Article object returned from Readability.
*/
parseDocument: function (uri, serializedDoc) {
let doc = new JSDOMParser().parse(serializedDoc);
return new Readability(uri, doc).parse();
},
};