forked from mirrors/gecko-dev
94 lines
2.3 KiB
JavaScript
94 lines
2.3 KiB
JavaScript
// -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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// This file and Readability-readerable.js are merged together into
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// Readerable.sys.mjs.
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/* exported Readerable */
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/* import-globals-from Readability-readerable.js */
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const { XPCOMUtils } = ChromeUtils.importESModule(
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"resource://gre/modules/XPCOMUtils.sys.mjs"
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);
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var Readerable = {
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get isEnabledForParseOnLoad() {
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return this.isEnabled;
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},
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/**
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* Decides whether or not a document is reader-able without parsing the whole thing.
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*
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* @param doc A document to parse.
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* @return boolean Whether or not we should show the reader mode button.
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*/
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isProbablyReaderable(doc) {
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// Only care about 'real' HTML documents:
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if (
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doc.mozSyntheticDocument ||
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!doc.defaultView.HTMLDocument.isInstance(doc)
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) {
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return false;
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}
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let uri = Services.io.newURI(doc.location.href);
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if (!this.shouldCheckUri(uri)) {
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return false;
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}
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return isProbablyReaderable(doc, this._isNodeVisible);
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},
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_isNodeVisible(node) {
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return node.clientHeight > 0 && node.clientWidth > 0;
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},
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_blockedHosts: [
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"amazon.com",
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"github.com",
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"mail.google.com",
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"pinterest.com",
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"reddit.com",
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"twitter.com",
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"youtube.com",
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"app.slack.com",
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],
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shouldCheckUri(uri, isBaseUri = false) {
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if (!["http", "https", "file", "moz-nullprincipal"].includes(uri.scheme)) {
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return false;
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}
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if (!isBaseUri && uri.scheme.startsWith("http")) {
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// Sadly, some high-profile pages have false positives, so bail early for those:
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let { host } = uri;
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if (this._blockedHosts.some(blockedHost => host.endsWith(blockedHost))) {
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// Allow github on non-project pages
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if (
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host == "github.com" &&
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!uri.filePath.includes("/projects") &&
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!uri.filePath.includes("/issues")
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) {
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return true;
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}
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return false;
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}
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if (uri.filePath == "/") {
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return false;
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}
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}
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return true;
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},
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};
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XPCOMUtils.defineLazyPreferenceGetter(
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Readerable,
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"isEnabled",
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"reader.parse-on-load.enabled",
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true
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);
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