forked from mirrors/gecko-dev
62ec8eba92
MozReview-Commit-ID: 7wBtCZDG1V3 --HG-- extra : rebase_source : 414412a0f01566b84f28d12df4985369d2a8110b
498 lines
17 KiB
JavaScript
498 lines
17 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/**
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* SidebarUI controls showing and hiding the browser sidebar.
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*
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* @note
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* Some of these methods take a commandID argument - we expect to find a
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* xul:broadcaster element with the specified ID.
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* The following attributes on that element may be used and/or modified:
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* - id (required) the string to match commandID. The convention
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* is to use this naming scheme: 'view<sidebar-name>Sidebar'.
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* - sidebarurl (required) specifies the URL to load in this sidebar.
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* - sidebartitle or label (in that order) specify the title to
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* display on the sidebar.
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* - checked indicates whether the sidebar is currently displayed.
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* Note that this attribute is updated when
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* the sidebar's visibility is changed.
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* - group this attribute must be set to "sidebar".
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*/
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var SidebarUI = {
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// Avoid getting the browser element from init() to avoid triggering the
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// <browser> constructor during startup if the sidebar is hidden.
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get browser() {
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if (this._browser)
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return this._browser;
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return this._browser = document.getElementById("sidebar");
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},
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POSITION_START_PREF: "sidebar.position_start",
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DEFAULT_SIDEBAR_ID: "viewBookmarksSidebar",
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// lastOpenedId is set in show() but unlike currentID it's not cleared out on hide
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// and isn't persisted across windows
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lastOpenedId: null,
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_box: null,
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// The constructor of this label accesses the browser element due to the
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// control="sidebar" attribute, so avoid getting this label during startup.
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get _title() {
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if (this.__title)
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return this.__title;
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return this.__title = document.getElementById("sidebar-title");
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},
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_splitter: null,
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_icon: null,
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_reversePositionButton: null,
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_switcherPanel: null,
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_switcherTarget: null,
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_switcherArrow: null,
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init() {
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this._box = document.getElementById("sidebar-box");
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this._splitter = document.getElementById("sidebar-splitter");
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this._icon = document.getElementById("sidebar-icon");
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this._reversePositionButton = document.getElementById("sidebar-reverse-position");
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this._switcherPanel = document.getElementById("sidebarMenu-popup");
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this._switcherTarget = document.getElementById("sidebar-switcher-target");
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this._switcherArrow = document.getElementById("sidebar-switcher-arrow");
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this._switcherTarget.addEventListener("command", () => {
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this.toggleSwitcherPanel();
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});
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},
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uninit() {
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// If this is the last browser window, persist various values that should be
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// remembered for after a restart / reopening a browser window.
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let enumerator = Services.wm.getEnumerator("navigator:browser");
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if (!enumerator.hasMoreElements()) {
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document.persist("sidebar-box", "sidebarcommand");
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let xulStore = Cc["@mozilla.org/xul/xulstore;1"].getService(Ci.nsIXULStore);
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if (this._box.hasAttribute("positionend")) {
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document.persist("sidebar-box", "positionend");
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} else {
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xulStore.removeValue(document.documentURI, "sidebar-box", "positionend");
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}
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if (this._box.hasAttribute("checked")) {
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document.persist("sidebar-box", "checked");
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} else {
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xulStore.removeValue(document.documentURI, "sidebar-box", "checked");
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}
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document.persist("sidebar-box", "width");
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document.persist("sidebar-title", "value");
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}
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},
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/**
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* Opens the switcher panel if it's closed, or closes it if it's open.
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*/
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toggleSwitcherPanel() {
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if (this._switcherPanel.state == "open" || this._switcherPanel.state == "showing") {
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this.hideSwitcherPanel();
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} else if (this._switcherPanel.state == "closed") {
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this.showSwitcherPanel();
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}
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},
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hideSwitcherPanel() {
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this._switcherPanel.hidePopup();
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},
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showSwitcherPanel() {
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this._ensureShortcutsShown();
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this._switcherPanel.addEventListener("popuphiding", () => {
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this._switcherTarget.classList.remove("active");
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}, {once: true});
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// Combine start/end position with ltr/rtl to set the label in the popup appropriately.
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let label = this._positionStart == this.isRTL ?
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gNavigatorBundle.getString("sidebar.moveToLeft") :
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gNavigatorBundle.getString("sidebar.moveToRight");
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this._reversePositionButton.setAttribute("label", label);
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this._switcherPanel.hidden = false;
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this._switcherPanel.openPopup(this._icon);
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this._switcherTarget.classList.add("active");
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},
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_addedShortcuts: false,
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_ensureShortcutsShown() {
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if (this._addedShortcuts) {
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return;
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}
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this._addedShortcuts = true;
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for (let button of this._switcherPanel.querySelectorAll("toolbarbutton[key]")) {
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let keyId = button.getAttribute("key");
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let key = document.getElementById(keyId);
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if (!key) {
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continue;
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}
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button.setAttribute("shortcut", ShortcutUtils.prettifyShortcut(key));
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}
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},
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/**
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* Change the pref that will trigger a call to setPosition
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*/
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reversePosition() {
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Services.prefs.setBoolPref(this.POSITION_START_PREF, !this._positionStart);
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},
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/**
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* Read the positioning pref and position the sidebar and the splitter
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* appropriately within the browser container.
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*/
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setPosition() {
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// First reset all ordinals to match DOM ordering.
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let browser = document.getElementById("browser");
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[...browser.childNodes].forEach((node, i) => {
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node.ordinal = i + 1;
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});
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if (!this._positionStart) {
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// DOM ordering is: | sidebar-box | splitter | appcontent |
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// Want to display as: | appcontent | splitter | sidebar-box |
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// So we just swap box and appcontent ordering
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let appcontent = document.getElementById("appcontent");
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let boxOrdinal = this._box.ordinal;
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this._box.ordinal = appcontent.ordinal;
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appcontent.ordinal = boxOrdinal;
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// Indicate we've switched ordering to the box
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this._box.setAttribute("positionend", true);
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} else {
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this._box.removeAttribute("positionend");
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}
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this.hideSwitcherPanel();
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},
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/**
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* Try and adopt the status of the sidebar from another window.
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* @param {Window} sourceWindow - Window to use as a source for sidebar status.
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* @return true if we adopted the state, or false if the caller should
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* initialize the state itself.
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*/
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adoptFromWindow(sourceWindow) {
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// If the opener had a sidebar, open the same sidebar in our window.
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// The opener can be the hidden window too, if we're coming from the state
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// where no windows are open, and the hidden window has no sidebar box.
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let sourceUI = sourceWindow.SidebarUI;
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if (!sourceUI || !sourceUI._box) {
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// no source UI or no _box means we also can't adopt the state.
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return false;
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}
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// Set sidebar command even if hidden, so that we keep the same sidebar
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// even if it's currently closed.
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let commandID = sourceUI._box.getAttribute("sidebarcommand");
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if (commandID) {
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this._box.setAttribute("sidebarcommand", commandID);
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}
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if (sourceUI._box.hidden) {
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// just hidden means we have adopted the hidden state.
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return true;
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}
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// dynamically generated sidebars will fail this check, but we still
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// consider it adopted.
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if (!document.getElementById(commandID)) {
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return true;
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}
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this._box.setAttribute("width", sourceUI._box.boxObject.width);
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this.showInitially(commandID);
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return true;
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},
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windowPrivacyMatches(w1, w2) {
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return PrivateBrowsingUtils.isWindowPrivate(w1) === PrivateBrowsingUtils.isWindowPrivate(w2);
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},
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/**
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* If loading a sidebar was delayed on startup, start the load now.
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*/
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startDelayedLoad() {
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let sourceWindow = window.opener;
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// No source window means this is the initial window. If we're being
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// opened from another window, check that it is one we might open a sidebar
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// for.
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if (sourceWindow) {
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if (sourceWindow.closed || sourceWindow.location.protocol != "chrome:" ||
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!this.windowPrivacyMatches(sourceWindow, window)) {
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return;
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}
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// Try to adopt the sidebar state from the source window
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if (this.adoptFromWindow(sourceWindow)) {
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return;
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}
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}
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// If we're not adopting settings from a parent window, set them now.
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let wasOpen = this._box.getAttribute("checked");
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if (!wasOpen) {
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return;
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}
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let commandID = this._box.getAttribute("sidebarcommand");
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if (commandID && document.getElementById(commandID)) {
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this.showInitially(commandID);
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} else {
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this._box.removeAttribute("checked");
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// Remove the |sidebarcommand| attribute, because the element it
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// refers to no longer exists, so we should assume this sidebar
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// panel has been uninstalled. (249883)
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// We use setAttribute rather than removeAttribute so it persists
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// correctly.
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this._box.setAttribute("sidebarcommand", "");
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// On a startup in which the startup cache was invalidated (e.g. app update)
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// extensions will not be started prior to delayedLoad, thus the
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// sidebarcommand element will not exist yet. Store the commandID so
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// extensions may reopen if necessary. A startup cache invalidation
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// can be forced (for testing) by deleting compatibility.ini from the
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// profile.
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this.lastOpenedId = commandID;
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}
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},
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/**
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* Fire a "SidebarShown" event on the sidebar to give any interested parties
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* a chance to update the button or whatever.
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*/
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_fireShowEvent() {
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let event = new CustomEvent("SidebarShown", {bubbles: true});
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this._switcherTarget.dispatchEvent(event);
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},
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/**
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* Fire a "SidebarFocused" event on the sidebar's |window| to give the sidebar
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* a chance to adjust focus as needed. An additional event is needed, because
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* we don't want to focus the sidebar when it's opened on startup or in a new
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* window, only when the user opens the sidebar.
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*/
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_fireFocusedEvent() {
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let event = new CustomEvent("SidebarFocused", {bubbles: true});
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this.browser.contentWindow.dispatchEvent(event);
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},
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/**
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* True if the sidebar is currently open.
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*/
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get isOpen() {
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return !this._box.hidden;
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},
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/**
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* The ID of the current sidebar (ie, the ID of the broadcaster being used).
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*/
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get currentID() {
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return this.isOpen ? this._box.getAttribute("sidebarcommand") : "";
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},
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get title() {
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return this._title.value;
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},
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set title(value) {
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this._title.value = value;
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},
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getBroadcasterById(id) {
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let sidebarBroadcaster = document.getElementById(id);
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if (sidebarBroadcaster && sidebarBroadcaster.localName == "broadcaster") {
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return sidebarBroadcaster;
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}
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return null;
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},
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/**
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* Toggle the visibility of the sidebar. If the sidebar is hidden or is open
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* with a different commandID, then the sidebar will be opened using the
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* specified commandID. Otherwise the sidebar will be hidden.
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*
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* @param {string} commandID ID of the xul:broadcaster element to use.
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* @param {DOMNode} [triggerNode] Node, usually a button, that triggered the
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* visibility toggling of the sidebar.
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* @return {Promise}
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*/
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toggle(commandID = this.lastOpenedId, triggerNode) {
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// First priority for a default value is this.lastOpenedId which is set during show()
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// and not reset in hide(), unlike currentID. If show() hasn't been called and we don't
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// have a persisted command either, or the command doesn't exist anymore, then
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// fallback to a default sidebar.
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if (!commandID) {
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commandID = this._box.getAttribute("sidebarcommand");
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}
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if (!commandID || !this.getBroadcasterById(commandID)) {
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commandID = this.DEFAULT_SIDEBAR_ID;
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}
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if (this.isOpen && commandID == this.currentID) {
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this.hide(triggerNode);
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return Promise.resolve();
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}
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return this.show(commandID, triggerNode);
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},
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/**
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* Show the sidebar, using the parameters from the specified broadcaster.
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* @see SidebarUI note.
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*
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* This wraps the internal method, including a ping to telemetry.
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*
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* @param {string} commandID ID of the xul:broadcaster element to use.
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* @param {DOMNode} [triggerNode] Node, usually a button, that triggered the
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* showing of the sidebar.
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*/
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show(commandID, triggerNode) {
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return this._show(commandID).then(() => {
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if (triggerNode) {
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updateToggleControlLabel(triggerNode);
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}
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this._fireFocusedEvent();
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BrowserUITelemetry.countSidebarEvent(commandID, "show");
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});
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},
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/**
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* Show the sidebar, without firing the focused event or logging telemetry.
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* This is intended to be used when the sidebar is opened automatically
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* when a window opens (not triggered by user interaction).
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*
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* @param {string} commandID ID of the xul:broadcaster element to use.
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*/
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showInitially(commandID) {
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return this._show(commandID);
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},
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/**
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* Implementation for show. Also used internally for sidebars that are shown
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* when a window is opened and we don't want to ping telemetry.
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*
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* @param {string} commandID ID of the xul:broadcaster element to use.
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*/
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_show(commandID) {
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return new Promise((resolve, reject) => {
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let sidebarBroadcaster = this.getBroadcasterById(commandID);
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if (!sidebarBroadcaster) {
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reject(new Error("Invalid sidebar broadcaster specified: " + commandID));
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return;
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}
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if (this.isOpen && commandID != this.currentID) {
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BrowserUITelemetry.countSidebarEvent(this.currentID, "hide");
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}
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let broadcasters = document.querySelectorAll("broadcaster[group=sidebar]");
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for (let broadcaster of broadcasters) {
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if (broadcaster != sidebarBroadcaster) {
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broadcaster.removeAttribute("checked");
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} else {
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sidebarBroadcaster.setAttribute("checked", "true");
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}
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}
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this._box.hidden = this._splitter.hidden = false;
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this.setPosition();
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this.hideSwitcherPanel();
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this._box.setAttribute("checked", "true");
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this._box.setAttribute("sidebarcommand", sidebarBroadcaster.id);
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this.lastOpenedId = sidebarBroadcaster.id;
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let title = sidebarBroadcaster.getAttribute("sidebartitle") ||
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sidebarBroadcaster.getAttribute("label");
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// When loading a web page in the sidebar there is no title set on the
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// broadcaster, as it is instead set by openWebPanel. Don't clear out
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// the title in this case.
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if (title) {
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this.title = title;
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}
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let url = sidebarBroadcaster.getAttribute("sidebarurl");
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this.browser.setAttribute("src", url); // kick off async load
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if (this.browser.contentDocument.location.href != url) {
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this.browser.addEventListener("load", event => {
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// We're handling the 'load' event before it bubbles up to the usual
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// (non-capturing) event handlers. Let it bubble up before resolving.
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setTimeout(() => {
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resolve();
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// Now that the currentId is updated, fire a show event.
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this._fireShowEvent();
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}, 0);
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}, {capture: true, once: true});
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} else {
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resolve();
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// Now that the currentId is updated, fire a show event.
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this._fireShowEvent();
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}
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let selBrowser = gBrowser.selectedBrowser;
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selBrowser.messageManager.sendAsyncMessage("Sidebar:VisibilityChange",
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{commandID, isOpen: true}
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);
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});
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},
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/**
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* Hide the sidebar.
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*
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* @param {DOMNode} [triggerNode] Node, usually a button, that triggered the
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* hiding of the sidebar.
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*/
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hide(triggerNode) {
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if (!this.isOpen) {
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return;
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}
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this.hideSwitcherPanel();
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let commandID = this._box.getAttribute("sidebarcommand");
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let sidebarBroadcaster = document.getElementById(commandID);
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if (sidebarBroadcaster.getAttribute("checked") != "true") {
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return;
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}
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// Replace the document currently displayed in the sidebar with about:blank
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// so that we can free memory by unloading the page. We need to explicitly
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// create a new content viewer because the old one doesn't get destroyed
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// until about:blank has loaded (which does not happen as long as the
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// element is hidden).
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this.browser.setAttribute("src", "about:blank");
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this.browser.docShell.createAboutBlankContentViewer(null);
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sidebarBroadcaster.removeAttribute("checked");
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this._box.removeAttribute("checked");
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this._box.hidden = this._splitter.hidden = true;
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let selBrowser = gBrowser.selectedBrowser;
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selBrowser.focus();
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selBrowser.messageManager.sendAsyncMessage("Sidebar:VisibilityChange",
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{commandID, isOpen: false}
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);
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if (triggerNode) {
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updateToggleControlLabel(triggerNode);
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}
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BrowserUITelemetry.countSidebarEvent(commandID, "hide");
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},
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};
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// Add getters related to the position here, since we will want them
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// available for both startDelayedLoad and init.
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XPCOMUtils.defineLazyPreferenceGetter(SidebarUI, "_positionStart",
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SidebarUI.POSITION_START_PREF, true, SidebarUI.setPosition.bind(SidebarUI));
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XPCOMUtils.defineLazyGetter(SidebarUI, "isRTL", () => {
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return getComputedStyle(document.documentElement).direction == "rtl";
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});
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