mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
456 lines
14 KiB
JavaScript
456 lines
14 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("Reader: " + 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 = {
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_STEP_INCREMENT: 0,
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_STEP_DECREMENT: 1,
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init: function Reader_init() {
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dump("Init()");
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Services.obs.addObserver(this, "Reader:FaviconReturn", 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._titleElement = document.getElementById("reader-header");
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this._contentElement = document.getElementById("reader-content");
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this._toolbarElement = document.getElementById("reader-toolbar");
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this._toolbarEnabled = false;
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this._scrollOffset = window.pageYOffset;
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let body = document.body;
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body.addEventListener("touchstart", this, false);
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body.addEventListener("click", this, false);
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window.addEventListener("scroll", this, false);
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window.addEventListener("popstate", this, false);
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this._setupAllDropdowns();
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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.colorSchemeSepia"),
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value: "sepia"}
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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._setColorScheme.bind(this));
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this._setColorScheme(colorScheme);
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let fontTitle = gStrings.GetStringFromName("aboutReader.textTitle");
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this._setupStepControl("font-size-control", fontTitle, this._onFontSizeChange.bind(this));
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this._fontSize = 0;
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this._setFontSize(Services.prefs.getIntPref("reader.font_size"));
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let marginTitle = gStrings.GetStringFromName("aboutReader.marginTitle");
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this._setupStepControl("margin-size-control", marginTitle, this._onMarginSizeChange.bind(this));
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this._marginSize = 0;
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this._setMarginSize(Services.prefs.getIntPref("reader.margin_size"));
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dump("Decoding query arguments");
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let queryArgs = this._decodeQueryString(window.location.href);
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let url = queryArgs.url;
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if (url) {
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dump("Fetching page with URL: " + url);
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this._loadFromURL(url);
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} else {
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var tabId = queryArgs.tabId;
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if (tabId) {
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dump("Loading from tab with ID: " + tabId);
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this._loadFromTab(tabId);
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}
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}
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},
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observe: function(aMessage, aTopic, aData) {
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switch(aTopic) {
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case "Reader:FaviconReturn": {
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let info = JSON.parse(aData);
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this._loadFavicon(info.url, info.faviconUrl);
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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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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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}
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},
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uninit: function Reader_uninit() {
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dump("Uninit()");
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Services.obs.removeObserver(this, "Reader:FaviconReturn", false);
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let body = document.body;
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body.removeEventListener("touchstart", this, false);
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body.removeEventListener("click", this, false);
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window.removeEventListener("scroll", this, false);
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window.removeEventListener("popstate", this, false);
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this._hideContent();
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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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gecko: {
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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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},
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_onMarginSizeChange: function Reader_onMarginSizeChange(operation) {
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if (operation == this._STEP_INCREMENT)
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this._setMarginSize(this._marginSize + 5);
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else
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this._setMarginSize(this._marginSize - 5);
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},
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_setMarginSize: function Reader_setMarginSize(newMarginSize) {
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if (this._marginSize === newMarginSize)
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return;
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this._marginSize = Math.max(5, Math.min(25, newMarginSize));
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document.body.style.marginLeft = this._marginSize + "%";
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document.body.style.marginRight = this._marginSize + "%";
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Services.prefs.setIntPref("reader.margin_size", this._marginSize);
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},
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_onFontSizeChange: function Reader_onFontSizeChange(operation) {
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if (operation == this._STEP_INCREMENT)
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this._setFontSize(this._fontSize + 1);
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else
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this._setFontSize(this._fontSize - 1);
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},
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_setFontSize: function Reader_setFontSize(newFontSize) {
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if (this._fontSize === newFontSize)
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return;
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let bodyClasses = document.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 = Math.max(1, Math.min(7, 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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_setColorScheme: function Reader_setColorScheme(newColorScheme) {
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if (this._colorScheme === newColorScheme)
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return;
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let bodyClasses = document.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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Services.prefs.setCharPref("reader.color_scheme", this._colorScheme);
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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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if (history.state)
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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._showProgress();
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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) {
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this._showProgress();
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gChromeWin.Reader.parseDocumentFromTab(tabId, 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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gecko: {
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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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},
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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 link = document.createElement('link');
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link.rel = 'shortcut icon';
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link.href = faviconUrl;
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document.getElementsByTagName('head')[0].appendChild(link);
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},
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_showError: function Reader_showError(error) {
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this._titleElement.style.display = "none";
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this._contentElement.innerHTML = error;
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this._contentElement.style.display = "block";
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document.title = error;
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},
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_showContent: function Reader_showContent(article) {
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this._article = article;
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this._titleElement.innerHTML = article.title;
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this._titleElement.style.display = "block";
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this._contentElement.innerHTML = article.content;
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this._contentElement.style.display = "block";
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document.title = article.title;
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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._titleElement.style.display = "none";
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this._contentElement.style.display = "none";
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},
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_showProgress: function Reader_showProgress() {
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this._titleElement.style.display = "none";
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this._contentElement.innerHTML = gStrings.GetStringFromName("aboutReader.loading");
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this._contentElement.style.display = "block";
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},
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_decodeQueryString: function Reader_decodeQueryString(url) {
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let result = {};
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let query = url.split("?")[1];
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if (query) {
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let pairs = query.split("&");
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for (let i = 0; i < pairs.length; i++) {
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let [name, value] = pairs[i].split("=");
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result[name] = decodeURIComponent(value);
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}
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}
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return result;
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},
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_setupStepControl: function Reader_setupStepControl(id, name, callback) {
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let stepControl = document.getElementById(id);
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let title = document.createElement("h1");
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title.innerHTML = name;
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stepControl.appendChild(title);
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let plusButton = document.createElement("div");
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plusButton.className = "button plus-button";
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stepControl.appendChild(plusButton);
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let minusButton = document.createElement("div");
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minusButton.className = "button minus-button";
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stepControl.appendChild(minusButton);
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plusButton.addEventListener("click", function(aEvent) {
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aEvent.stopPropagation();
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callback(this._STEP_INCREMENT);
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}.bind(this), true);
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minusButton.addEventListener("click", function(aEvent) {
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aEvent.stopPropagation();
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callback(this._STEP_DECREMENT);
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}.bind(this), true);
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},
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_setupSegmentedButton: function Reader_setupSegmentedButton(id, options, initialValue, callback) {
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let segmentedButton = document.getElementById(id);
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for (let i = 0; i < options.length; i++) {
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let option = options[i];
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let item = document.createElement("li");
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let link = document.createElement("a");
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link.innerHTML = option.name;
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item.appendChild(link);
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segmentedButton.appendChild(item);
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link.addEventListener("click", function(aEvent) {
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aEvent.stopPropagation();
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let items = segmentedButton.children;
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for (let j = items.length - 1; j >= 0; j--) {
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items[j].classList.remove("selected");
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}
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item.classList.add("selected");
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callback(option.value);
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}.bind(this), true);
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if (option.value === initialValue)
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item.classList.add("selected");
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}
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},
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_setupButton: function Reader_setupButton(id, callback) {
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let button = document.getElementById(id);
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button.addEventListener("click", function(aEvent) {
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callback();
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}, true);
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},
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_setupAllDropdowns: function Reader_setupAllDropdowns() {
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let dropdowns = document.getElementsByClassName("dropdown");
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for (let i = dropdowns.length - 1; i >= 0; i--) {
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let dropdown = dropdowns[i];
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let dropdownToggle = dropdown.getElementsByClassName("dropdown-toggle")[0];
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let dropdownPopup = dropdown.getElementsByClassName("dropdown-popup")[0];
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if (!dropdownToggle || !dropdownPopup)
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continue;
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let dropdownArrow = document.createElement("div");
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dropdownArrow.className = "dropdown-arrow";
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dropdownPopup.appendChild(dropdownArrow);
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let updatePopupPosition = function() {
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let popupWidth = dropdownPopup.offsetWidth + 30;
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let arrowWidth = dropdownArrow.offsetWidth;
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let toggleWidth = dropdownToggle.offsetWidth;
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let toggleLeft = dropdownToggle.offsetLeft;
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let popupShift = (toggleWidth - popupWidth) / 2;
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let popupLeft = Math.max(0, Math.min(window.innerWidth - popupWidth, toggleLeft + popupShift));
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dropdownPopup.style.left = popupLeft + "px";
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let arrowShift = (toggleWidth - arrowWidth) / 2;
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let arrowLeft = toggleLeft - popupLeft + arrowShift;
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dropdownArrow.style.left = arrowLeft + "px";
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}
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window.addEventListener("resize", function(aEvent) {
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updatePopupPosition();
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}, true);
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dropdownToggle.addEventListener("click", function(aEvent) {
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aEvent.stopPropagation();
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let dropdownClasses = dropdown.classList;
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if (dropdownClasses.contains("open")) {
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history.back();
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} else {
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updatePopupPosition();
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if (!this._closeAllDropdowns())
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history.pushState({ dropdown: 1 }, document.title);
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dropdownClasses.add("open");
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}
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}.bind(this), true);
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}
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},
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_closeAllDropdowns : function Reader_closeAllDropdowns() {
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let dropdowns = document.querySelectorAll(".dropdown.open");
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for (let i = dropdowns.length - 1; i >= 0; i--) {
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dropdowns[i].classList.remove("open");
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}
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return (dropdowns.length > 0)
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}
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}
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