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Bug 1472491: Part 5b - Add AboutReaderChild actor. r=jaws f=felipe
MozReview-Commit-ID: H2vZT2lim3L --HG-- rename : browser/base/content/tab-content.js => browser/actors/AboutReaderChild.jsm extra : rebase_source : a8f8721f5ea4bd7f2e009fbb38587f438a9deac3
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150
browser/actors/AboutReaderChild.jsm
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150
browser/actors/AboutReaderChild.jsm
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@ -0,0 +1,150 @@
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/* vim: set ts=2 sw=2 sts=2 et tw=80: */
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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
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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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var EXPORTED_SYMBOLS = ["AboutReaderChild"];
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ChromeUtils.import("resource://gre/modules/ActorChild.jsm");
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ChromeUtils.defineModuleGetter(this, "AboutReader",
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"resource://gre/modules/AboutReader.jsm");
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ChromeUtils.defineModuleGetter(this, "ReaderMode",
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"resource://gre/modules/ReaderMode.jsm");
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class AboutReaderChild extends ActorChild {
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constructor(mm) {
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super(mm);
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this._articlePromise = null;
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this._isLeavingReaderableReaderMode = false;
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}
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receiveMessage(message) {
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switch (message.name) {
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case "Reader:ToggleReaderMode":
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if (!this.isAboutReader) {
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this._articlePromise = ReaderMode.parseDocument(this.content.document).catch(Cu.reportError);
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ReaderMode.enterReaderMode(this.mm.docShell, this.content);
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} else {
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this._isLeavingReaderableReaderMode = this.isReaderableAboutReader;
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ReaderMode.leaveReaderMode(this.mm.docShell, this.content);
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}
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break;
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case "Reader:PushState":
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this.updateReaderButton(!!(message.data && message.data.isArticle));
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break;
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}
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}
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get isAboutReader() {
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if (!this.content) {
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return false;
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}
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return this.content.document.documentURI.startsWith("about:reader");
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}
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get isReaderableAboutReader() {
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return this.isAboutReader &&
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!this.content.document.documentElement.dataset.isError;
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}
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handleEvent(aEvent) {
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if (aEvent.originalTarget.defaultView != this.content) {
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return;
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}
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switch (aEvent.type) {
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case "AboutReaderContentLoaded":
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if (!this.isAboutReader) {
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return;
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}
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if (this.content.document.body) {
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// Update the toolbar icon to show the "reader active" icon.
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this.mm.sendAsyncMessage("Reader:UpdateReaderButton");
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new AboutReader(this.mm, this.content, this._articlePromise);
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this._articlePromise = null;
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}
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break;
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case "pagehide":
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this.cancelPotentialPendingReadabilityCheck();
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// this._isLeavingReaderableReaderMode is used here to keep the Reader Mode icon
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// visible in the location bar when transitioning from reader-mode page
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// back to the readable source page.
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this.mm.sendAsyncMessage("Reader:UpdateReaderButton", { isArticle: this._isLeavingReaderableReaderMode });
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if (this._isLeavingReaderableReaderMode) {
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this._isLeavingReaderableReaderMode = false;
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}
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break;
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case "pageshow":
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// If a page is loaded from the bfcache, we won't get a "DOMContentLoaded"
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// event, so we need to rely on "pageshow" in this case.
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if (aEvent.persisted) {
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this.updateReaderButton();
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}
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break;
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case "DOMContentLoaded":
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this.updateReaderButton();
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break;
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}
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}
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/**
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* NB: this function will update the state of the reader button asynchronously
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* after the next mozAfterPaint call (assuming reader mode is enabled and
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* this is a suitable document). Calling it on things which won't be
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* painted is not going to work.
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*/
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updateReaderButton(forceNonArticle) {
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if (!ReaderMode.isEnabledForParseOnLoad || this.isAboutReader ||
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!this.content || !(this.content.document instanceof this.content.HTMLDocument) ||
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this.content.document.mozSyntheticDocument) {
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return;
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}
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this.scheduleReadabilityCheckPostPaint(forceNonArticle);
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}
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cancelPotentialPendingReadabilityCheck() {
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if (this._pendingReadabilityCheck) {
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this.mm.removeEventListener("MozAfterPaint", this._pendingReadabilityCheck);
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delete this._pendingReadabilityCheck;
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}
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}
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scheduleReadabilityCheckPostPaint(forceNonArticle) {
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if (this._pendingReadabilityCheck) {
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// We need to stop this check before we re-add one because we don't know
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// if forceNonArticle was true or false last time.
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this.cancelPotentialPendingReadabilityCheck();
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}
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this._pendingReadabilityCheck = this.onPaintWhenWaitedFor.bind(this, forceNonArticle);
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this.mm.addEventListener("MozAfterPaint", this._pendingReadabilityCheck);
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}
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onPaintWhenWaitedFor(forceNonArticle, event) {
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// In non-e10s, we'll get called for paints other than ours, and so it's
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// possible that this page hasn't been laid out yet, in which case we
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// should wait until we get an event that does relate to our layout. We
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// determine whether any of our this.content got painted by checking if there
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// are any painted rects.
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if (!event.clientRects.length) {
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return;
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}
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this.cancelPotentialPendingReadabilityCheck();
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// Only send updates when there are articles; there's no point updating with
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// |false| all the time.
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if (ReaderMode.isProbablyReaderable(this.content.document)) {
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this.mm.sendAsyncMessage("Reader:UpdateReaderButton", { isArticle: true });
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} else if (forceNonArticle) {
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this.mm.sendAsyncMessage("Reader:UpdateReaderButton", { isArticle: false });
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}
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}
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}
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@ -5,5 +5,6 @@
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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FINAL_TARGET_FILES.actors += [
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'AboutReaderChild.jsm',
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'BrowserTabChild.jsm',
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]
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@ -14,10 +14,6 @@ ChromeUtils.defineModuleGetter(this, "E10SUtils",
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"resource://gre/modules/E10SUtils.jsm");
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ChromeUtils.defineModuleGetter(this, "BrowserUtils",
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"resource://gre/modules/BrowserUtils.jsm");
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ChromeUtils.defineModuleGetter(this, "AboutReader",
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"resource://gre/modules/AboutReader.jsm");
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ChromeUtils.defineModuleGetter(this, "ReaderMode",
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"resource://gre/modules/ReaderMode.jsm");
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ChromeUtils.defineModuleGetter(this, "PageStyleHandler",
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"resource:///modules/PageStyleHandler.jsm");
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@ -60,151 +56,6 @@ addEventListener("pageshow", function({ originalTarget }) {
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}
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}, false, true);
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var AboutReaderListener = {
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_articlePromise: null,
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_isLeavingReaderableReaderMode: false,
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init() {
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addEventListener("AboutReaderContentLoaded", this, false, true);
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addEventListener("DOMContentLoaded", this, false);
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addEventListener("pageshow", this, false);
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addEventListener("pagehide", this, false);
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addMessageListener("Reader:ToggleReaderMode", this);
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addMessageListener("Reader:PushState", this);
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this.init = null;
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},
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receiveMessage(message) {
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switch (message.name) {
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case "Reader:ToggleReaderMode":
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if (!this.isAboutReader) {
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this._articlePromise = ReaderMode.parseDocument(content.document).catch(Cu.reportError);
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ReaderMode.enterReaderMode(docShell, content);
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} else {
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this._isLeavingReaderableReaderMode = this.isReaderableAboutReader;
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ReaderMode.leaveReaderMode(docShell, content);
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}
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break;
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case "Reader:PushState":
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this.updateReaderButton(!!(message.data && message.data.isArticle));
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break;
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}
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},
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get isAboutReader() {
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if (!content) {
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return false;
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}
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return content.document.documentURI.startsWith("about:reader");
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},
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get isReaderableAboutReader() {
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return this.isAboutReader &&
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!content.document.documentElement.dataset.isError;
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},
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handleEvent(aEvent) {
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if (aEvent.originalTarget.defaultView != content) {
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return;
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}
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switch (aEvent.type) {
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case "AboutReaderContentLoaded":
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if (!this.isAboutReader) {
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return;
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}
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if (content.document.body) {
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// Update the toolbar icon to show the "reader active" icon.
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sendAsyncMessage("Reader:UpdateReaderButton");
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new AboutReader(global, content, this._articlePromise);
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this._articlePromise = null;
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}
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break;
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case "pagehide":
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this.cancelPotentialPendingReadabilityCheck();
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// this._isLeavingReaderableReaderMode is used here to keep the Reader Mode icon
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// visible in the location bar when transitioning from reader-mode page
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// back to the readable source page.
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sendAsyncMessage("Reader:UpdateReaderButton", { isArticle: this._isLeavingReaderableReaderMode });
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if (this._isLeavingReaderableReaderMode) {
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this._isLeavingReaderableReaderMode = false;
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}
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break;
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case "pageshow":
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// If a page is loaded from the bfcache, we won't get a "DOMContentLoaded"
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// event, so we need to rely on "pageshow" in this case.
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if (aEvent.persisted) {
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this.updateReaderButton();
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}
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break;
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case "DOMContentLoaded":
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this.updateReaderButton();
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break;
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}
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},
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/**
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* NB: this function will update the state of the reader button asynchronously
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* after the next mozAfterPaint call (assuming reader mode is enabled and
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* this is a suitable document). Calling it on things which won't be
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* painted is not going to work.
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*/
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updateReaderButton(forceNonArticle) {
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if (!ReaderMode.isEnabledForParseOnLoad || this.isAboutReader ||
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!content || !(content.document instanceof content.HTMLDocument) ||
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content.document.mozSyntheticDocument) {
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return;
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}
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this.scheduleReadabilityCheckPostPaint(forceNonArticle);
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},
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cancelPotentialPendingReadabilityCheck() {
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if (this._pendingReadabilityCheck) {
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removeEventListener("MozAfterPaint", this._pendingReadabilityCheck);
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delete this._pendingReadabilityCheck;
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}
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},
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scheduleReadabilityCheckPostPaint(forceNonArticle) {
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if (this._pendingReadabilityCheck) {
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// We need to stop this check before we re-add one because we don't know
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// if forceNonArticle was true or false last time.
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this.cancelPotentialPendingReadabilityCheck();
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}
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this._pendingReadabilityCheck = this.onPaintWhenWaitedFor.bind(this, forceNonArticle);
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addEventListener("MozAfterPaint", this._pendingReadabilityCheck);
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},
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onPaintWhenWaitedFor(forceNonArticle, event) {
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// In non-e10s, we'll get called for paints other than ours, and so it's
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// possible that this page hasn't been laid out yet, in which case we
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// should wait until we get an event that does relate to our layout. We
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// determine whether any of our content got painted by checking if there
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// are any painted rects.
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if (!event.clientRects.length) {
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return;
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}
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this.cancelPotentialPendingReadabilityCheck();
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// Only send updates when there are articles; there's no point updating with
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// |false| all the time.
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if (ReaderMode.isProbablyReaderable(content.document)) {
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sendAsyncMessage("Reader:UpdateReaderButton", { isArticle: true });
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} else if (forceNonArticle) {
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sendAsyncMessage("Reader:UpdateReaderButton", { isArticle: false });
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}
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},
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};
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AboutReaderListener.init();
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var ContentSearchMediator = {
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@ -48,6 +48,7 @@ const whitelist = {
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"resource://formautofill/FormAutofillContent.jsm",
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// Browser front-end
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"resource:///actors/AboutReaderChild.jsm",
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"resource:///actors/BrowserTabChild.jsm",
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"resource:///modules/ContentLinkHandler.jsm",
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"resource:///modules/ContentMetaHandler.jsm",
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@ -12,6 +12,23 @@ ChromeUtils.defineModuleGetter(this, "ActorManagerParent",
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"resource://gre/modules/ActorManagerParent.jsm");
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let ACTORS = {
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AboutReader: {
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child: {
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module: "resource:///actors/AboutReaderChild.jsm",
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group: "browsers",
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events: {
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"AboutReaderContentLoaded": {wantUntrusted: true},
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"DOMContentLoaded": {},
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"pageshow": {},
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"pagehide": {},
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},
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messages: [
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"Reader:ToggleReaderMode",
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"Reader:PushState",
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],
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},
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},
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BrowserTab: {
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child: {
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module: "resource:///actors/BrowserTabChild.jsm",
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