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If the pref browser.fission.simulate is true, the event dispatcher in ActorManagerChild will not dispatch events to actors that aren't associated with the same window as the event's target. In addition, when that pref is on, the actors associated with sub-frames will have their content property bound to the correct content window, that might differ from the message manager's window (which is always related to the top level). Then, in order to write Fission-compatible code, that specific actor will need to be declared with allFrames = true, meaning that it wants to be instantiated for every frame, and not just top-level ones Differential Revision: https://phabricator.services.mozilla.com/D6358 --HG-- extra : moz-landing-system : lando
166 lines
4.6 KiB
JavaScript
166 lines
4.6 KiB
JavaScript
/* 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const EXPORTED_SYMBOLS = ["LinkHandlerChild"];
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ChromeUtils.import("resource://gre/modules/Services.jsm");
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ChromeUtils.import("resource://gre/modules/ActorChild.jsm");
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ChromeUtils.defineModuleGetter(this, "FaviconLoader",
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"resource:///modules/FaviconLoader.jsm");
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class LinkHandlerChild extends ActorChild {
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constructor(dispatcher) {
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super(dispatcher);
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this.seenTabIcon = false;
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this._iconLoader = null;
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}
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get iconLoader() {
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if (!this._iconLoader) {
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this._iconLoader = new FaviconLoader(this.mm);
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}
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return this._iconLoader;
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}
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addRootIcon() {
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if (!this.seenTabIcon && Services.prefs.getBoolPref("browser.chrome.guess_favicon", true) &&
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Services.prefs.getBoolPref("browser.chrome.site_icons", true)) {
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// Inject the default icon. Use documentURIObject so that we do the right
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// thing with about:-style error pages. See bug 453442
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let pageURI = this.content.document.documentURIObject;
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if (["http", "https"].includes(pageURI.scheme)) {
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this.seenTabIcon = true;
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this.iconLoader.addDefaultIcon(pageURI);
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}
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}
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}
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onHeadParsed(event) {
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if (event.target.ownerDocument != this.content.document) {
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return;
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}
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// Per spec icons are meant to be in the <head> tag so we should have seen
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// all the icons now so add the root icon if no other tab icons have been
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// seen.
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this.addRootIcon();
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// We're likely done with icon parsing so load the pending icons now.
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if (this._iconLoader) {
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this._iconLoader.onPageShow();
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}
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}
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onPageShow(event) {
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if (event.target != this.content.document) {
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return;
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}
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this.addRootIcon();
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if (this._iconLoader) {
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this._iconLoader.onPageShow();
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}
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}
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onPageHide(event) {
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if (event.target != this.content.document) {
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return;
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}
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if (this._iconLoader) {
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this._iconLoader.onPageHide();
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}
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this.seenTabIcon = false;
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}
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onLinkEvent(event) {
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let link = event.target;
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// Ignore sub-frames (bugs 305472, 479408).
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if (link.ownerGlobal != this.content) {
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return;
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}
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let rel = link.rel && link.rel.toLowerCase();
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// We also check .getAttribute, since an empty href attribute will give us
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// a link.href that is the same as the document.
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if (!rel || !link.href || !link.getAttribute("href"))
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return;
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// Note: following booleans only work for the current link, not for the
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// whole content
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let iconAdded = false;
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let searchAdded = false;
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let rels = {};
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for (let relString of rel.split(/\s+/))
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rels[relString] = true;
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for (let relVal in rels) {
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let isRichIcon = false;
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switch (relVal) {
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case "apple-touch-icon":
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case "apple-touch-icon-precomposed":
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case "fluid-icon":
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isRichIcon = true;
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case "icon":
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if (iconAdded || link.hasAttribute("mask")) { // Masked icons are not supported yet.
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break;
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}
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if (!Services.prefs.getBoolPref("browser.chrome.site_icons", true)) {
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return;
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}
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if (this.iconLoader.addIconFromLink(link, isRichIcon)) {
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iconAdded = true;
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if (!isRichIcon) {
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this.seenTabIcon = true;
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}
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}
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break;
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case "search":
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if (Services.policies && !Services.policies.isAllowed("installSearchEngine")) {
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break;
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}
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if (!searchAdded && event.type == "DOMLinkAdded") {
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let type = link.type && link.type.toLowerCase();
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type = type.replace(/^\s+|\s*(?:;.*)?$/g, "");
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let re = /^(?:https?|ftp):/i;
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if (type == "application/opensearchdescription+xml" && link.title &&
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re.test(link.href)) {
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let engine = { title: link.title, href: link.href };
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this.mm.sendAsyncMessage("Link:AddSearch", {
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engine,
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url: link.ownerDocument.documentURI,
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});
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searchAdded = true;
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}
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}
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break;
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}
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}
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}
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handleEvent(event) {
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switch (event.type) {
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case "pageshow":
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return this.onPageShow(event);
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case "pagehide":
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return this.onPageHide(event);
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case "DOMHeadElementParsed":
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return this.onHeadParsed(event);
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default:
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return this.onLinkEvent(event);
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}
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}
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}
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