mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
764 lines
22 KiB
JavaScript
764 lines
22 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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let Ci = Components.interfaces, Cc = Components.classes, Cu = Components.utils;
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Cu.import("resource://gre/modules/Services.jsm")
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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XPCOMUtils.defineLazyGetter(window, "gChromeWin", function ()
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window.QueryInterface(Ci.nsIInterfaceRequestor)
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.getInterface(Ci.nsIWebNavigation)
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.QueryInterface(Ci.nsIDocShellTreeItem)
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.rootTreeItem
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.QueryInterface(Ci.nsIInterfaceRequestor)
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.getInterface(Ci.nsIDOMWindow)
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.QueryInterface(Ci.nsIDOMChromeWindow));
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function dump(s) {
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Services.console.logStringMessage("AboutReader: " + s);
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}
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let gStrings = Services.strings.createBundle("chrome://browser/locale/aboutReader.properties");
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let AboutReader = function(doc, win) {
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dump("Init()");
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this._docRef = Cu.getWeakReference(doc);
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this._winRef = Cu.getWeakReference(win);
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Services.obs.addObserver(this, "Reader:FaviconReturn", false);
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Services.obs.addObserver(this, "Reader:Add", false);
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Services.obs.addObserver(this, "Reader:Remove", false);
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this._article = null;
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dump("Feching toolbar, header and content notes from about:reader");
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this._headerElementRef = Cu.getWeakReference(doc.getElementById("reader-header"));
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this._domainElementRef = Cu.getWeakReference(doc.getElementById("reader-domain"));
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this._titleElementRef = Cu.getWeakReference(doc.getElementById("reader-title"));
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this._creditsElementRef = Cu.getWeakReference(doc.getElementById("reader-credits"));
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this._contentElementRef = Cu.getWeakReference(doc.getElementById("reader-content"));
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this._toolbarElementRef = Cu.getWeakReference(doc.getElementById("reader-toolbar"));
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this._messageElementRef = Cu.getWeakReference(doc.getElementById("reader-message"));
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this._toolbarEnabled = false;
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this._scrollOffset = win.pageYOffset;
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let body = doc.body;
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body.addEventListener("touchstart", this, false);
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body.addEventListener("click", this, false);
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win.addEventListener("unload", this, false);
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win.addEventListener("scroll", this, false);
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win.addEventListener("popstate", this, false);
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win.addEventListener("resize", this, false);
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this._setupAllDropdowns();
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this._setupButton("toggle-button", this._onReaderToggle.bind(this));
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this._setupButton("list-button", this._onList.bind(this));
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this._setupButton("share-button", this._onShare.bind(this));
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let colorSchemeOptions = [
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{ name: gStrings.GetStringFromName("aboutReader.colorSchemeLight"),
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value: "light"},
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{ name: gStrings.GetStringFromName("aboutReader.colorSchemeDark"),
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value: "dark"},
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{ name: gStrings.GetStringFromName("aboutReader.colorSchemeAuto"),
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value: "auto"}
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];
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let colorScheme = Services.prefs.getCharPref("reader.color_scheme");
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this._setupSegmentedButton("color-scheme-buttons", colorSchemeOptions, colorScheme, this._setColorSchemePref.bind(this));
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this._setColorSchemePref(colorScheme);
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let fontTypeOptions = [
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{ name: gStrings.GetStringFromName("aboutReader.fontTypeSansSerif"),
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value: "sans-serif"},
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{ name: gStrings.GetStringFromName("aboutReader.fontTypeSerif"),
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value: "serif"}
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];
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let fontType = Services.prefs.getCharPref("reader.font_type");
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this._setupSegmentedButton("font-type-buttons", fontTypeOptions, fontType, this._setFontType.bind(this));
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this._setFontType(fontType);
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let fontTitle = gStrings.GetStringFromName("aboutReader.textTitle");
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this._fontSize = 0;
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this._setupStepControl("font-size-control", fontTitle,
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this._FONT_SIZE_MIN, this._FONT_SIZE_MAX, this._FONT_SIZE_STEP, Services.prefs.getIntPref("reader.font_size"),
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this._onFontSizeChange.bind(this));
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dump("Decoding query arguments");
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let queryArgs = this._decodeQueryString(win.location.href);
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this._isReadingListItem = (queryArgs.readingList == "1");
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this._updateToggleButton();
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let url = queryArgs.url;
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let tabId = queryArgs.tabId;
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if (tabId) {
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dump("Loading from tab with ID: " + tabId + ", URL: " + url);
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this._loadFromTab(tabId, url);
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} else {
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dump("Fetching page with URL: " + url);
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this._loadFromURL(url);
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}
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}
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AboutReader.prototype = {
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_FONT_SIZE_MIN: 1,
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_FONT_SIZE_MAX: 7,
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_FONT_SIZE_STEP: 1,
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_BLOCK_IMAGES_SELECTOR: ".content p > img:only-child, " +
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".content p > a:only-child > img:only-child, " +
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".content .wp-caption img, " +
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".content figure img",
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get _doc() {
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return this._docRef.get();
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},
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get _win() {
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return this._winRef.get();
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},
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get _headerElement() {
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return this._headerElementRef.get();
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},
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get _domainElement() {
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return this._domainElementRef.get();
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},
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get _titleElement() {
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return this._titleElementRef.get();
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},
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get _creditsElement() {
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return this._creditsElementRef.get();
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},
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get _contentElement() {
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return this._contentElementRef.get();
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},
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get _toolbarElement() {
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return this._toolbarElementRef.get();
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},
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get _messageElement() {
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return this._messageElementRef.get();
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},
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observe: function Reader_observe(aMessage, aTopic, aData) {
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switch(aTopic) {
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case "Reader:FaviconReturn": {
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let args = JSON.parse(aData);
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this._loadFavicon(args.url, args.faviconUrl);
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Services.obs.removeObserver(this, "Reader:FaviconReturn");
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break;
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}
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case "Reader:Add": {
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let args = JSON.parse(aData);
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if (args.url == this._article.url) {
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if (!this._isReadingListItem) {
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this._isReadingListItem = true;
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this._updateToggleButton();
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}
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}
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break;
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}
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case "Reader:Remove": {
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if (aData == this._article.url) {
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if (this._isReadingListItem) {
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this._isReadingListItem = false;
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this._updateToggleButton();
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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: function Reader_handleEvent(aEvent) {
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if (!aEvent.isTrusted)
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return;
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switch (aEvent.type) {
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case "touchstart":
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this._scrolled = false;
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break;
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case "click":
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if (!this._scrolled)
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this._toggleToolbarVisibility();
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break;
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case "scroll":
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if (!this._scrolled) {
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this._scrolled = true;
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this._setToolbarVisibility(false);
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}
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break;
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case "popstate":
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if (!aEvent.state)
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this._closeAllDropdowns();
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break;
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case "resize":
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this._updateImageMargins();
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break;
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case "devicelight":
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this._handleDeviceLight(aEvent.value);
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break;
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case "unload":
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Services.obs.removeObserver(this, "Reader:Add");
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Services.obs.removeObserver(this, "Reader:Remove");
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break;
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}
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},
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_updateToggleButton: function Reader_updateToggleButton() {
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let classes = this._doc.getElementById("toggle-button").classList;
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if (this._isReadingListItem) {
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classes.add("on");
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} else {
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classes.remove("on");
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}
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},
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_onReaderToggle: function Reader_onToggle() {
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if (!this._article)
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return;
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this._isReadingListItem = !this._isReadingListItem;
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this._updateToggleButton();
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if (this._isReadingListItem) {
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gChromeWin.Reader.storeArticleInCache(this._article, function(success) {
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dump("Reader:Add (in reader) success=" + success);
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let result = (success ? gChromeWin.Reader.READER_ADD_SUCCESS :
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gChromeWin.Reader.READER_ADD_FAILED);
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let json = JSON.stringify({ fromAboutReader: true, url: this._article.url });
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Services.obs.notifyObservers(null, "Reader:Add", json);
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gChromeWin.sendMessageToJava({
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type: "Reader:Added",
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result: result,
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title: this._article.title,
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url: this._article.url,
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});
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}.bind(this));
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} else {
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gChromeWin.Reader.removeArticleFromCache(this._article.url , function(success) {
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dump("Reader:Remove (in reader) success=" + success);
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Services.obs.notifyObservers(null, "Reader:Remove", this._article.url);
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gChromeWin.sendMessageToJava({
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type: "Reader:Removed",
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url: this._article.url
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});
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}.bind(this));
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}
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},
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_onList: function Reader_onList() {
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if (!this._article)
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return;
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gChromeWin.sendMessageToJava({ type: "Reader:GoToReadingList" });
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},
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_onShare: function Reader_onShare() {
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if (!this._article)
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return;
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gChromeWin.sendMessageToJava({
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type: "Reader:Share",
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url: this._article.url,
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title: this._article.title
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});
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},
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_onFontSizeChange: function Reader_onFontSizeChange(newFontSize) {
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let bodyClasses = this._doc.body.classList;
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if (this._fontSize > 0)
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bodyClasses.remove("font-size" + this._fontSize);
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this._fontSize = newFontSize;
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bodyClasses.add("font-size" + this._fontSize);
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Services.prefs.setIntPref("reader.font_size", this._fontSize);
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},
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_handleDeviceLight: function Reader_handleDeviceLight(luxValue) {
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// Ignore changes that are within a certain threshold of previous lux values.
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if ((this._colorScheme === "dark" && luxValue < 50) ||
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(this._colorScheme === "light" && luxValue > 25))
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return;
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if (luxValue < 30)
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this._setColorScheme("dark");
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else
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this._setColorScheme("light");
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},
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_setColorScheme: function Reader_setColorScheme(newColorScheme) {
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if (this._colorScheme === newColorScheme)
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return;
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let bodyClasses = this._doc.body.classList;
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if (this._colorScheme)
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bodyClasses.remove(this._colorScheme);
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this._colorScheme = newColorScheme;
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bodyClasses.add(this._colorScheme);
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},
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// Pref values include "dark", "light", and "auto", which automatically switches
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// between light and dark color schemes based on the ambient light level.
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_setColorSchemePref: function Reader_setColorSchemePref(colorSchemePref) {
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if (colorSchemePref === "auto") {
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this._win.addEventListener("devicelight", this, false);
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} else {
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this._win.removeEventListener("devicelight", this, false);
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this._setColorScheme(colorSchemePref);
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}
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Services.prefs.setCharPref("reader.color_scheme", colorSchemePref);
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},
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_setFontType: function Reader_setFontType(newFontType) {
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if (this._fontType === newFontType)
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return;
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let bodyClasses = this._doc.body.classList;
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if (this._fontType)
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bodyClasses.remove(this._fontType);
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this._fontType = newFontType;
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bodyClasses.add(this._fontType);
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Services.prefs.setCharPref("reader.font_type", this._fontType);
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},
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_getToolbarVisibility: function Reader_getToolbarVisibility() {
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return !this._toolbarElement.classList.contains("toolbar-hidden");
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},
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_setToolbarVisibility: function Reader_setToolbarVisibility(visible) {
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let win = this._win;
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if (win.history.state)
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win.history.back();
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if (!this._toolbarEnabled)
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return;
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if (this._getToolbarVisibility() === visible)
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return;
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this._toolbarElement.classList.toggle("toolbar-hidden");
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if (!visible && !this._hasUsedToolbar) {
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this._hasUsedToolbar = Services.prefs.getBoolPref("reader.has_used_toolbar");
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if (!this._hasUsedToolbar) {
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gChromeWin.NativeWindow.toast.show(gStrings.GetStringFromName("aboutReader.toolbarTip"), "short");
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Services.prefs.setBoolPref("reader.has_used_toolbar", true);
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this._hasUsedToolbar = true;
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}
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}
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},
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_toggleToolbarVisibility: function Reader_toggleToolbarVisibility(visible) {
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this._setToolbarVisibility(!this._getToolbarVisibility());
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},
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_loadFromURL: function Reader_loadFromURL(url) {
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this._showProgressDelayed();
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gChromeWin.Reader.parseDocumentFromURL(url, function(article) {
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if (article)
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this._showContent(article);
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else
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this._showError(gStrings.GetStringFromName("aboutReader.loadError"));
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}.bind(this));
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},
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_loadFromTab: function Reader_loadFromTab(tabId, url) {
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this._showProgressDelayed();
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gChromeWin.Reader.getArticleForTab(tabId, url, function(article) {
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if (article)
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this._showContent(article);
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else
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this._showError(gStrings.GetStringFromName("aboutReader.loadError"));
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}.bind(this));
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},
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_requestFavicon: function Reader_requestFavicon() {
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gChromeWin.sendMessageToJava({
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type: "Reader:FaviconRequest",
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url: this._article.url
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});
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},
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_loadFavicon: function Reader_loadFavicon(url, faviconUrl) {
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if (this._article.url !== url)
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return;
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let doc = this._doc;
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let link = doc.createElement('link');
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link.rel = 'shortcut icon';
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link.href = faviconUrl;
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doc.getElementsByTagName('head')[0].appendChild(link);
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},
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_updateImageMargins: function Reader_updateImageMargins() {
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let windowWidth = this._win.innerWidth;
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let contentWidth = this._contentElement.offsetWidth;
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let maxWidthStyle = windowWidth + "px !important";
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let setImageMargins = function(img) {
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if (!img._originalWidth)
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img._originalWidth = img.offsetWidth;
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let imgWidth = img._originalWidth;
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// If the image is taking more than half of the screen, just make
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// it fill edge-to-edge.
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if (imgWidth < contentWidth && imgWidth > windowWidth * 0.55)
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imgWidth = windowWidth;
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let sideMargin = Math.max((contentWidth - windowWidth) / 2,
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(contentWidth - imgWidth) / 2);
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let imageStyle = sideMargin + "px !important";
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let widthStyle = imgWidth + "px !important";
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let cssText = "max-width: " + maxWidthStyle + ";" +
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"width: " + widthStyle + ";" +
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"margin-left: " + imageStyle + ";" +
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"margin-right: " + imageStyle + ";";
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img.style.cssText = cssText;
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}
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let imgs = this._doc.querySelectorAll(this._BLOCK_IMAGES_SELECTOR);
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for (let i = imgs.length; --i >= 0;) {
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let img = imgs[i];
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if (img.width > 0) {
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setImageMargins(img);
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} else {
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img.onload = function() {
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setImageMargins(img);
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}
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}
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}
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},
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_maybeSetTextDirection: function Read_maybeSetTextDirection(article){
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if(!article.dir)
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return;
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//Set "dir" attribute on content
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this._contentElement.setAttribute("dir", article.dir);
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this._headerElement.setAttribute("dir", article.dir);
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},
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_showError: function Reader_showError(error) {
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this._headerElement.style.display = "none";
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this._contentElement.style.display = "none";
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this._messageElement.innerHTML = error;
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this._messageElement.style.display = "block";
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this._doc.title = error;
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},
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_showContent: function Reader_showContent(article) {
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this._messageElement.style.display = "none";
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this._article = article;
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let articleUri = Services.io.newURI(article.url, null, null);
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let domain = articleUri.host;
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this._domainElement.innerHTML = domain;
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this._creditsElement.innerHTML = article.byline;
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this._titleElement.textContent = article.title;
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this._doc.title = article.title;
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this._headerElement.style.display = "block";
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let parserUtils = Cc["@mozilla.org/parserutils;1"].getService(Ci.nsIParserUtils);
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let contentFragment = parserUtils.parseFragment(article.content, Ci.nsIParserUtils.SanitizerDropForms,
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false, articleUri, this._contentElement);
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this._contentElement.innerHTML = "";
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this._contentElement.appendChild(contentFragment);
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this._updateImageMargins();
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this._maybeSetTextDirection(article);
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this._contentElement.style.display = "block";
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|
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this._toolbarEnabled = true;
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this._setToolbarVisibility(true);
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this._requestFavicon();
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},
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_hideContent: function Reader_hideContent() {
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this._headerElement.style.display = "none";
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this._contentElement.style.display = "none";
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},
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_showProgressDelayed: function Reader_showProgressDelayed() {
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this._win.setTimeout(function() {
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// Article has already been loaded, no need to show
|
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// progress anymore.
|
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if (this._article)
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return;
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this._headerElement.style.display = "none";
|
|
this._contentElement.style.display = "none";
|
|
|
|
this._messageElement.innerHTML = gStrings.GetStringFromName("aboutReader.loading");
|
|
this._messageElement.style.display = "block";
|
|
}.bind(this), 300);
|
|
},
|
|
|
|
_decodeQueryString: function Reader_decodeQueryString(url) {
|
|
let result = {};
|
|
let query = url.split("?")[1];
|
|
if (query) {
|
|
let pairs = query.split("&");
|
|
for (let i = 0; i < pairs.length; i++) {
|
|
let [name, value] = pairs[i].split("=");
|
|
result[name] = decodeURIComponent(value);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
},
|
|
|
|
_setupStepControl: function Reader_setupStepControl(id, name, min, max, step, initial, callback) {
|
|
let doc = this._doc;
|
|
let stepControl = doc.getElementById(id);
|
|
|
|
let title = this._doc.createElement("h1");
|
|
title.innerHTML = name;
|
|
stepControl.appendChild(title);
|
|
|
|
let plusButton = doc.createElement("div");
|
|
plusButton.className = "button plus-button";
|
|
stepControl.appendChild(plusButton);
|
|
|
|
let minusButton = doc.createElement("div");
|
|
minusButton.className = "button minus-button";
|
|
stepControl.appendChild(minusButton);
|
|
|
|
let updateControls = function() {
|
|
current = Math.max(min, Math.min(max, current));
|
|
if (current == min) {
|
|
minusButton.classList.add("disabled");
|
|
} else {
|
|
minusButton.classList.remove("disabled");
|
|
}
|
|
if (current == max) {
|
|
plusButton.classList.add("disabled");
|
|
} else {
|
|
plusButton.classList.remove("disabled");
|
|
}
|
|
}
|
|
|
|
let current = initial;
|
|
updateControls();
|
|
|
|
plusButton.addEventListener("click", function(aEvent) {
|
|
if (!aEvent.isTrusted)
|
|
return;
|
|
|
|
aEvent.stopPropagation();
|
|
|
|
if (current < max) {
|
|
current += step;
|
|
updateControls();
|
|
callback(current);
|
|
}
|
|
}.bind(this), true);
|
|
|
|
minusButton.addEventListener("click", function(aEvent) {
|
|
if (!aEvent.isTrusted)
|
|
return;
|
|
|
|
aEvent.stopPropagation();
|
|
|
|
if (current > min) {
|
|
current -= step;
|
|
updateControls();
|
|
callback(current);
|
|
}
|
|
}.bind(this), true);
|
|
|
|
// Always callback initial current setting
|
|
callback(current);
|
|
},
|
|
|
|
_setupSegmentedButton: function Reader_setupSegmentedButton(id, options, initialValue, callback) {
|
|
let doc = this._doc;
|
|
let segmentedButton = doc.getElementById(id);
|
|
|
|
for (let i = 0; i < options.length; i++) {
|
|
let option = options[i];
|
|
|
|
let item = doc.createElement("li");
|
|
let link = doc.createElement("a");
|
|
link.innerHTML = option.name;
|
|
item.appendChild(link);
|
|
|
|
link.style.MozUserSelect = 'none';
|
|
segmentedButton.appendChild(item);
|
|
|
|
link.addEventListener("click", function(aEvent) {
|
|
if (!aEvent.isTrusted)
|
|
return;
|
|
|
|
aEvent.stopPropagation();
|
|
|
|
let items = segmentedButton.children;
|
|
for (let j = items.length - 1; j >= 0; j--) {
|
|
items[j].classList.remove("selected");
|
|
}
|
|
|
|
item.classList.add("selected");
|
|
callback(option.value);
|
|
}.bind(this), true);
|
|
|
|
if (option.value === initialValue)
|
|
item.classList.add("selected");
|
|
}
|
|
},
|
|
|
|
_setupButton: function Reader_setupButton(id, callback) {
|
|
let button = this._doc.getElementById(id);
|
|
|
|
button.addEventListener("click", function(aEvent) {
|
|
if (!aEvent.isTrusted)
|
|
return;
|
|
|
|
aEvent.stopPropagation();
|
|
callback();
|
|
}, true);
|
|
},
|
|
|
|
_setupAllDropdowns: function Reader_setupAllDropdowns() {
|
|
let doc = this._doc;
|
|
let win = this._win;
|
|
|
|
let dropdowns = doc.getElementsByClassName("dropdown");
|
|
|
|
for (let i = dropdowns.length - 1; i >= 0; i--) {
|
|
let dropdown = dropdowns[i];
|
|
|
|
let dropdownToggle = dropdown.getElementsByClassName("dropdown-toggle")[0];
|
|
let dropdownPopup = dropdown.getElementsByClassName("dropdown-popup")[0];
|
|
|
|
if (!dropdownToggle || !dropdownPopup)
|
|
continue;
|
|
|
|
let dropdownArrow = doc.createElement("div");
|
|
dropdownArrow.className = "dropdown-arrow";
|
|
dropdownPopup.appendChild(dropdownArrow);
|
|
|
|
let updatePopupPosition = function() {
|
|
let popupWidth = dropdownPopup.offsetWidth + 30;
|
|
let arrowWidth = dropdownArrow.offsetWidth;
|
|
let toggleWidth = dropdownToggle.offsetWidth;
|
|
let toggleLeft = dropdownToggle.offsetLeft;
|
|
|
|
let popupShift = (toggleWidth - popupWidth) / 2;
|
|
let popupLeft = Math.max(0, Math.min(win.innerWidth - popupWidth, toggleLeft + popupShift));
|
|
dropdownPopup.style.left = popupLeft + "px";
|
|
|
|
let arrowShift = (toggleWidth - arrowWidth) / 2;
|
|
let arrowLeft = toggleLeft - popupLeft + arrowShift;
|
|
dropdownArrow.style.left = arrowLeft + "px";
|
|
};
|
|
|
|
win.addEventListener("resize", function(aEvent) {
|
|
if (!aEvent.isTrusted)
|
|
return;
|
|
|
|
updatePopupPosition();
|
|
}, true);
|
|
|
|
dropdownToggle.addEventListener("click", function(aEvent) {
|
|
if (!aEvent.isTrusted)
|
|
return;
|
|
|
|
aEvent.stopPropagation();
|
|
|
|
if (!this._getToolbarVisibility())
|
|
return;
|
|
|
|
let dropdownClasses = dropdown.classList;
|
|
|
|
if (dropdownClasses.contains("open")) {
|
|
win.history.back();
|
|
} else {
|
|
updatePopupPosition();
|
|
if (!this._closeAllDropdowns())
|
|
this._pushDropdownState();
|
|
|
|
dropdownClasses.add("open");
|
|
}
|
|
}.bind(this), true);
|
|
}
|
|
},
|
|
|
|
_pushDropdownState: function Reader_pushDropdownState() {
|
|
// FIXME: We're getting a NS_ERROR_UNEXPECTED error when we try
|
|
// to do win.history.pushState() here (see bug 682296). This is
|
|
// a workaround that allows us to push history state on the target
|
|
// content document.
|
|
|
|
let doc = this._doc;
|
|
let body = doc.body;
|
|
|
|
if (this._pushStateScript)
|
|
body.removeChild(this._pushStateScript);
|
|
|
|
this._pushStateScript = doc.createElement('script');
|
|
this._pushStateScript.type = "text/javascript";
|
|
this._pushStateScript.innerHTML = 'history.pushState({ dropdown: 1 }, document.title);';
|
|
|
|
body.appendChild(this._pushStateScript);
|
|
},
|
|
|
|
_closeAllDropdowns : function Reader_closeAllDropdowns() {
|
|
let dropdowns = this._doc.querySelectorAll(".dropdown.open");
|
|
for (let i = dropdowns.length - 1; i >= 0; i--) {
|
|
dropdowns[i].classList.remove("open");
|
|
}
|
|
|
|
return (dropdowns.length > 0)
|
|
}
|
|
};
|