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diff --git a/browser/components/sessionstore/SessionStore.jsm b/browser/components/sessionstore/SessionStore.jsm
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+this.EXPORTED_SYMBOLS = ["SessionStore"];
+
+const Cu = Components.utils;
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+const Cr = Components.results;
+
+const STATE_STOPPED = 0;
+const STATE_RUNNING = 1;
+const STATE_QUITTING = -1;
+
+const STATE_STOPPED_STR = "stopped";
+const STATE_RUNNING_STR = "running";
+
+const TAB_STATE_NEEDS_RESTORE = 1;
+const TAB_STATE_RESTORING = 2;
+
+const PRIVACY_NONE = 0;
+const PRIVACY_ENCRYPTED = 1;
+const PRIVACY_FULL = 2;
+
+const NOTIFY_WINDOWS_RESTORED = "sessionstore-windows-restored";
+const NOTIFY_BROWSER_STATE_RESTORED = "sessionstore-browser-state-restored";
+
+// Default maximum number of tabs to restore simultaneously. Controlled by
+// the browser.sessionstore.max_concurrent_tabs pref.
+const DEFAULT_MAX_CONCURRENT_TAB_RESTORES = 3;
+
+// global notifications observed
+const OBSERVING = [
+ "domwindowopened", "domwindowclosed",
+ "quit-application-requested", "quit-application-granted",
+ "browser-lastwindow-close-granted",
+ "quit-application", "browser:purge-session-history",
+ "browser:purge-domain-data"
+];
+
+// XUL Window properties to (re)store
+// Restored in restoreDimensions()
+const WINDOW_ATTRIBUTES = ["width", "height", "screenX", "screenY", "sizemode"];
+
+// Hideable window features to (re)store
+// Restored in restoreWindowFeatures()
+const WINDOW_HIDEABLE_FEATURES = [
+ "menubar", "toolbar", "locationbar", "personalbar", "statusbar", "scrollbars"
+];
+
+const MESSAGES = [
+ // The content script tells us that its form data (or that of one of its
+ // subframes) might have changed. This can be the contents or values of
+ // standard form fields or of ContentEditables.
+ "SessionStore:input",
+
+ // The content script has received a pageshow event. This happens when a
+ // page is loaded from bfcache without any network activity, i.e. when
+ // clicking the back or forward button.
+ "SessionStore:pageshow"
+];
+
+// These are tab events that we listen to.
+const TAB_EVENTS = [
+ "TabOpen", "TabClose", "TabSelect", "TabShow", "TabHide", "TabPinned",
+ "TabUnpinned"
+];
+
+#ifndef XP_WIN
+#define BROKEN_WM_Z_ORDER
+#endif
+
+Cu.import("resource://gre/modules/Services.jsm", this);
+Cu.import("resource://gre/modules/XPCOMUtils.jsm", this);
+// debug.js adds NS_ASSERT. cf. bug 669196
+Cu.import("resource://gre/modules/debug.js", this);
+Cu.import("resource://gre/modules/osfile.jsm", this);
+Cu.import("resource://gre/modules/PrivateBrowsingUtils.jsm", this);
+Cu.import("resource://gre/modules/Promise.jsm", this);
+
+XPCOMUtils.defineLazyServiceGetter(this, "gSessionStartup",
+ "@mozilla.org/browser/sessionstartup;1", "nsISessionStartup");
+XPCOMUtils.defineLazyServiceGetter(this, "gScreenManager",
+ "@mozilla.org/gfx/screenmanager;1", "nsIScreenManager");
+
+// List of docShell capabilities to (re)store. These are automatically
+// retrieved from a given docShell if not already collected before.
+// This is made so they're automatically in sync with all nsIDocShell.allow*
+// properties.
+var gDocShellCapabilities = (function() {
+ let caps;
+
+ return docShell => {
+ if (!caps) {
+ let keys = Object.keys(docShell);
+ caps = keys.filter(k => k.startsWith("allow")).map(k => k.slice(5));
+ }
+
+ return caps;
+ };
+})();
+
+XPCOMUtils.defineLazyModuleGetter(this, "NetUtil",
+ "resource://gre/modules/NetUtil.jsm");
+
+#ifdef MOZ_DEVTOOLS
+XPCOMUtils.defineLazyModuleGetter(this, "ScratchpadManager",
+ "resource://devtools/client/scratchpad/scratchpad-manager.jsm");
+
+Object.defineProperty(this, "HUDService", {
+ get: function() {
+ let devtools = Cu.import("resource://devtools/shared/Loader.jsm", {}).devtools;
+ return devtools.require("devtools/client/webconsole/hudservice").HUDService;
+ },
+ configurable: true,
+ enumerable: true
+});
+#endif
+
+XPCOMUtils.defineLazyModuleGetter(this, "DocumentUtils",
+ "resource:///modules/sessionstore/DocumentUtils.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "SessionStorage",
+ "resource:///modules/sessionstore/SessionStorage.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "_SessionFile",
+ "resource:///modules/sessionstore/_SessionFile.jsm");
+
+function debug(aMsg) {
+ aMsg = ("SessionStore: " + aMsg).replace(/\S{80}/g, "$&\n");
+ Services.console.logStringMessage(aMsg);
+}
+
+this.SessionStore = {
+ get promiseInitialized() {
+ return SessionStoreInternal.promiseInitialized.promise;
+ },
+
+ get canRestoreLastSession() {
+ return SessionStoreInternal.canRestoreLastSession;
+ },
+
+ set canRestoreLastSession(val) {
+ SessionStoreInternal.canRestoreLastSession = val;
+ },
+
+ init: function(aWindow) {
+ return SessionStoreInternal.init(aWindow);
+ },
+
+ getBrowserState: function() {
+ return SessionStoreInternal.getBrowserState();
+ },
+
+ setBrowserState: function(aState) {
+ SessionStoreInternal.setBrowserState(aState);
+ },
+
+ getWindowState: function(aWindow) {
+ return SessionStoreInternal.getWindowState(aWindow);
+ },
+
+ setWindowState: function(aWindow, aState, aOverwrite) {
+ SessionStoreInternal.setWindowState(aWindow, aState, aOverwrite);
+ },
+
+ getTabState: function(aTab) {
+ return SessionStoreInternal.getTabState(aTab);
+ },
+
+ setTabState: function(aTab, aState) {
+ SessionStoreInternal.setTabState(aTab, aState);
+ },
+
+ duplicateTab: function(aWindow, aTab, aDelta) {
+ return SessionStoreInternal.duplicateTab(aWindow, aTab, aDelta);
+ },
+
+ getClosedTabCount: function(aWindow) {
+ return SessionStoreInternal.getClosedTabCount(aWindow);
+ },
+
+ getClosedTabData: function(aWindow) {
+ return SessionStoreInternal.getClosedTabData(aWindow);
+ },
+
+ undoCloseTab: function(aWindow, aIndex) {
+ return SessionStoreInternal.undoCloseTab(aWindow, aIndex);
+ },
+
+ forgetClosedTab: function(aWindow, aIndex) {
+ return SessionStoreInternal.forgetClosedTab(aWindow, aIndex);
+ },
+
+ getClosedWindowCount: function() {
+ return SessionStoreInternal.getClosedWindowCount();
+ },
+
+ getClosedWindowData: function() {
+ return SessionStoreInternal.getClosedWindowData();
+ },
+
+ undoCloseWindow: function(aIndex) {
+ return SessionStoreInternal.undoCloseWindow(aIndex);
+ },
+
+ forgetClosedWindow: function(aIndex) {
+ return SessionStoreInternal.forgetClosedWindow(aIndex);
+ },
+
+ getWindowValue: function(aWindow, aKey) {
+ return SessionStoreInternal.getWindowValue(aWindow, aKey);
+ },
+
+ setWindowValue: function(aWindow, aKey, aStringValue) {
+ SessionStoreInternal.setWindowValue(aWindow, aKey, aStringValue);
+ },
+
+ deleteWindowValue: function(aWindow, aKey) {
+ SessionStoreInternal.deleteWindowValue(aWindow, aKey);
+ },
+
+ getTabValue: function(aTab, aKey) {
+ return SessionStoreInternal.getTabValue(aTab, aKey);
+ },
+
+ setTabValue: function(aTab, aKey, aStringValue) {
+ SessionStoreInternal.setTabValue(aTab, aKey, aStringValue);
+ },
+
+ deleteTabValue: function(aTab, aKey) {
+ SessionStoreInternal.deleteTabValue(aTab, aKey);
+ },
+
+ persistTabAttribute: function(aName) {
+ SessionStoreInternal.persistTabAttribute(aName);
+ },
+
+ restoreLastSession: function() {
+ SessionStoreInternal.restoreLastSession();
+ },
+
+ checkPrivacyLevel: function(aIsHTTPS, aUseDefaultPref) {
+ return SessionStoreInternal.checkPrivacyLevel(aIsHTTPS, aUseDefaultPref);
+ }
+};
+
+// Freeze the SessionStore object. We don't want anyone to modify it.
+Object.freeze(SessionStore);
+
+var SessionStoreInternal = {
+ QueryInterface: XPCOMUtils.generateQI([
+ Ci.nsIDOMEventListener,
+ Ci.nsIObserver,
+ Ci.nsISupportsWeakReference
+ ]),
+
+ // set default load state
+ _loadState: STATE_STOPPED,
+
+ // During the initial restore and setBrowserState calls tracks the number of
+ // windows yet to be restored
+ _restoreCount: -1,
+
+ // whether a setBrowserState call is in progress
+ _browserSetState: false,
+
+ // time in milliseconds (Date.now()) when the session was last written to file
+ _lastSaveTime: 0,
+
+ // time in milliseconds when the session was started (saved across sessions),
+ // defaults to now if no session was restored or timestamp doesn't exist
+ _sessionStartTime: Date.now(),
+
+ // states for all currently opened windows
+ _windows: {},
+
+ // internal states for all open windows (data we need to associate,
+ // but not write to disk)
+ _internalWindows: {},
+
+ // states for all recently closed windows
+ _closedWindows: [],
+
+ // not-"dirty" windows usually don't need to have their data updated
+ _dirtyWindows: {},
+
+ // collection of session states yet to be restored
+ _statesToRestore: {},
+
+ // counts the number of crashes since the last clean start
+ _recentCrashes: 0,
+
+ // whether the last window was closed and should be restored
+ _restoreLastWindow: false,
+
+ // number of tabs currently restoring
+ _tabsRestoringCount: 0,
+
+ // max number of tabs to restore concurrently
+ _maxConcurrentTabRestores: DEFAULT_MAX_CONCURRENT_TAB_RESTORES,
+
+ // whether restored tabs load cached versions or force a reload
+ _cacheBehavior: 0,
+
+ // The state from the previous session (after restoring pinned tabs). This
+ // state is persisted and passed through to the next session during an app
+ // restart to make the third party add-on warning not trash the deferred
+ // session
+ _lastSessionState: null,
+
+ // When starting Firefox with a single private window, this is the place
+ // where we keep the session we actually wanted to restore in case the user
+ // decides to later open a non-private window as well.
+ _deferredInitialState: null,
+
+ // A promise resolved once initialization is complete
+ _promiseInitialization: Promise.defer(),
+
+ // Whether session has been initialized
+ _sessionInitialized: false,
+
+ // True if session store is disabled by multi-process browsing.
+ // See bug 516755.
+ _disabledForMultiProcess: false,
+
+ // The original "sessionstore.resume_session_once" preference value before it
+ // was modified by saveState. saveState will set the
+ // "sessionstore.resume_session_once" to true when the
+ // the "sessionstore.resume_from_crash" preference is false (crash recovery
+ // is disabled) so that pinned tabs will be restored in the case of a
+ // crash. This variable is used to restore the original value so the
+ // previous session is not always restored when
+ // "sessionstore.resume_from_crash" is true.
+ _resume_session_once_on_shutdown: null,
+
+ /**
+ * A promise fulfilled once initialization is complete.
+ */
+ get promiseInitialized() {
+ return this._promiseInitialization;
+ },
+
+ /* ........ Public Getters .............. */
+ get canRestoreLastSession() {
+ return this._lastSessionState;
+ },
+
+ set canRestoreLastSession(val) {
+ this._lastSessionState = null;
+ },
+
+ /* ........ Global Event Handlers .............. */
+
+ /**
+ * Initialize the component
+ */
+ initService: function() {
+ if (this._sessionInitialized) {
+ return;
+ }
+ OBSERVING.forEach(function(aTopic) {
+ Services.obs.addObserver(this, aTopic, true);
+ }, this);
+
+ this._initPrefs();
+
+ this._disabledForMultiProcess = false;
+
+ // this pref is only read at startup, so no need to observe it
+ this._sessionhistory_max_entries =
+ this._prefBranch.getIntPref("sessionhistory.max_entries");
+
+ gSessionStartup.onceInitialized.then(
+ this.initSession.bind(this)
+ );
+ },
+
+ initSession: function() {
+ let ss = gSessionStartup;
+ try {
+ if (ss.doRestore() ||
+ ss.sessionType == Ci.nsISessionStartup.DEFER_SESSION)
+ this._initialState = ss.state;
+ }
+ catch(ex) { dump(ex + "\n"); } // no state to restore, which is ok
+
+ if (this._initialState) {
+ try {
+ // If we're doing a DEFERRED session, then we want to pull pinned tabs
+ // out so they can be restored.
+ if (ss.sessionType == Ci.nsISessionStartup.DEFER_SESSION) {
+ let [iniState, remainingState] = this._prepDataForDeferredRestore(this._initialState);
+ // If we have a iniState with windows, that means that we have windows
+ // with app tabs to restore.
+ if (iniState.windows.length)
+ this._initialState = iniState;
+ else
+ this._initialState = null;
+ if (remainingState.windows.length)
+ this._lastSessionState = remainingState;
+ }
+ else {
+ // Get the last deferred session in case the user still wants to
+ // restore it
+ this._lastSessionState = this._initialState.lastSessionState;
+
+ let lastSessionCrashed =
+ this._initialState.session && this._initialState.session.state &&
+ this._initialState.session.state == STATE_RUNNING_STR;
+ if (lastSessionCrashed) {
+ this._recentCrashes = (this._initialState.session &&
+ this._initialState.session.recentCrashes || 0) + 1;
+
+ if (this._needsRestorePage(this._initialState, this._recentCrashes)) {
+ // replace the crashed session with a restore-page-only session
+ let pageData = {
+ url: "about:sessionrestore",
+ formdata: {
+ id: { "sessionData": this._initialState },
+ xpath: {}
+ }
+ };
+ this._initialState = { windows: [{ tabs: [{ entries: [pageData] }] }] };
+ }
+ }
+
+ // Load the session start time from the previous state
+ this._sessionStartTime = this._initialState.session &&
+ this._initialState.session.startTime ||
+ this._sessionStartTime;
+
+ // make sure that at least the first window doesn't have anything hidden
+ delete this._initialState.windows[0].hidden;
+ // Since nothing is hidden in the first window, it cannot be a popup
+ delete this._initialState.windows[0].isPopup;
+ // We don't want to minimize and then open a window at startup.
+ if (this._initialState.windows[0].sizemode == "minimized")
+ this._initialState.windows[0].sizemode = "normal";
+ // clear any lastSessionWindowID attributes since those don't matter
+ // during normal restore
+ this._initialState.windows.forEach(function(aWindow) {
+ delete aWindow.__lastSessionWindowID;
+ });
+ }
+ }
+ catch (ex) { debug("The session file is invalid: " + ex); }
+ }
+
+ // A Lazy getter for the sessionstore.js backup promise.
+ XPCOMUtils.defineLazyGetter(this, "_backupSessionFileOnce", function() {
+ return _SessionFile.createBackupCopy();
+ });
+
+ // at this point, we've as good as resumed the session, so we can
+ // clear the resume_session_once flag, if it's set
+ if (this._loadState != STATE_QUITTING &&
+ this._prefBranch.getBoolPref("sessionstore.resume_session_once"))
+ this._prefBranch.setBoolPref("sessionstore.resume_session_once", false);
+
+ this._initEncoding();
+
+ // Session is ready.
+ this._sessionInitialized = true;
+ this._promiseInitialization.resolve();
+ },
+
+ _initEncoding : function() {
+ // The (UTF-8) encoder used to write to files.
+ XPCOMUtils.defineLazyGetter(this, "_writeFileEncoder", function() {
+ return new TextEncoder();
+ });
+ },
+
+ _initPrefs : function() {
+ XPCOMUtils.defineLazyGetter(this, "_prefBranch", function() {
+ return Services.prefs.getBranch("browser.");
+ });
+
+ // minimal interval between two save operations (in milliseconds)
+ XPCOMUtils.defineLazyGetter(this, "_interval", function() {
+ // used often, so caching/observing instead of fetching on-demand
+ this._prefBranch.addObserver("sessionstore.interval", this, true);
+ return this._prefBranch.getIntPref("sessionstore.interval");
+ });
+
+ // when crash recovery is disabled, session data is not written to disk
+ XPCOMUtils.defineLazyGetter(this, "_resume_from_crash", function() {
+ // get crash recovery state from prefs and allow for proper reaction to state changes
+ this._prefBranch.addObserver("sessionstore.resume_from_crash", this, true);
+ return this._prefBranch.getBoolPref("sessionstore.resume_from_crash");
+ });
+
+ this._max_tabs_undo = this._prefBranch.getIntPref("sessionstore.max_tabs_undo");
+ this._prefBranch.addObserver("sessionstore.max_tabs_undo", this, true);
+
+ this._max_windows_undo = this._prefBranch.getIntPref("sessionstore.max_windows_undo");
+ this._prefBranch.addObserver("sessionstore.max_windows_undo", this, true);
+
+ // Straight-up collect the following one-time prefs
+ this._maxConcurrentTabRestores =
+ Services.prefs.getIntPref("browser.sessionstore.max_concurrent_tabs");
+ // ensure a sane value for concurrency, ignore and set default otherwise
+ if (this._maxConcurrentTabRestores < 1 || this._maxConcurrentTabRestores > 10) {
+ this._maxConcurrentTabRestores = DEFAULT_MAX_CONCURRENT_TAB_RESTORES;
+ }
+ this._cacheBehavior =
+ Services.prefs.getIntPref("browser.sessionstore.cache_behavior");
+
+ },
+
+ _initWindow: function(aWindow) {
+ if (aWindow) {
+ this.onLoad(aWindow);
+ } else if (this._loadState == STATE_STOPPED) {
+ // If init is being called with a null window, it's possible that we
+ // just want to tell sessionstore that a session is live (as is the case
+ // with starting Firefox with -private, for example; see bug 568816),
+ // so we should mark the load state as running to make sure that
+ // things like setBrowserState calls will succeed in restoring the session.
+ this._loadState = STATE_RUNNING;
+ }
+ },
+
+ /**
+ * Start tracking a window.
+ *
+ * This function also initializes the component if it is not
+ * initialized yet.
+ */
+ init: function(aWindow) {
+ let self = this;
+ this.initService();
+ return this._promiseInitialization.promise.then(
+ function onSuccess() {
+ self._initWindow(aWindow);
+ }
+ );
+ },
+
+ /**
+ * Called on application shutdown, after notifications:
+ * quit-application-granted, quit-application
+ */
+ _uninit: function() {
+ // save all data for session resuming
+ if (this._sessionInitialized)
+ this.saveState(true);
+
+ // clear out priority queue in case it's still holding refs
+ TabRestoreQueue.reset();
+
+ // Make sure to break our cycle with the save timer
+ if (this._saveTimer) {
+ this._saveTimer.cancel();
+ this._saveTimer = null;
+ }
+ },
+
+ /**
+ * Handle notifications
+ */
+ observe: function(aSubject, aTopic, aData) {
+ if (this._disabledForMultiProcess)
+ return;
+
+ switch (aTopic) {
+ case "domwindowopened": // catch new windows
+ this.onOpen(aSubject);
+ break;
+ case "domwindowclosed": // catch closed windows
+ this.onClose(aSubject);
+ break;
+ case "quit-application-requested":
+ this.onQuitApplicationRequested();
+ break;
+ case "quit-application-granted":
+ this.onQuitApplicationGranted();
+ break;
+ case "browser-lastwindow-close-granted":
+ this.onLastWindowCloseGranted();
+ break;
+ case "quit-application":
+ this.onQuitApplication(aData);
+ break;
+ case "browser:purge-session-history": // catch sanitization
+ this.onPurgeSessionHistory();
+ break;
+ case "browser:purge-domain-data":
+ this.onPurgeDomainData(aData);
+ break;
+ case "nsPref:changed": // catch pref changes
+ this.onPrefChange(aData);
+ break;
+ case "timer-callback": // timer call back for delayed saving
+ this.onTimerCallback();
+ break;
+ }
+ },
+
+ /**
+ * This method handles incoming messages sent by the session store content
+ * script and thus enables communication with OOP tabs.
+ */
+ receiveMessage: function(aMessage) {
+ var browser = aMessage.target;
+ var win = browser.ownerDocument.defaultView;
+
+ switch (aMessage.name) {
+ case "SessionStore:pageshow":
+ this.onTabLoad(win, browser);
+ break;
+ case "SessionStore:input":
+ this.onTabInput(win, browser);
+ break;
+ default:
+ debug("received unknown message '" + aMessage.name + "'");
+ break;
+ }
+
+ this._clearRestoringWindows();
+ },
+
+ /* ........ Window Event Handlers .............. */
+
+ /**
+ * Implement nsIDOMEventListener for handling various window and tab events
+ */
+ handleEvent: function(aEvent) {
+ if (this._disabledForMultiProcess)
+ return;
+
+ var win = aEvent.currentTarget.ownerDocument.defaultView;
+ switch (aEvent.type) {
+ case "load":
+ // If __SS_restore_data is set, then we need to restore the document
+ // (form data, scrolling, etc.). This will only happen when a tab is
+ // first restored.
+ let browser = aEvent.currentTarget;
+ if (browser.__SS_restore_data)
+ this.restoreDocument(win, browser, aEvent);
+ this.onTabLoad(win, browser);
+ break;
+ case "TabOpen":
+ this.onTabAdd(win, aEvent.originalTarget);
+ break;
+ case "TabClose":
+ // aEvent.detail determines if the tab was closed by moving to a different window
+ if (!aEvent.detail)
+ this.onTabClose(win, aEvent.originalTarget);
+ this.onTabRemove(win, aEvent.originalTarget);
+ break;
+ case "TabSelect":
+ this.onTabSelect(win);
+ break;
+ case "TabShow":
+ this.onTabShow(win, aEvent.originalTarget);
+ break;
+ case "TabHide":
+ this.onTabHide(win, aEvent.originalTarget);
+ break;
+ case "TabPinned":
+ case "TabUnpinned":
+ this.saveStateDelayed(win);
+ break;
+ }
+
+ this._clearRestoringWindows();
+ },
+
+ /**
+ * If it's the first window load since app start...
+ * - determine if we're reloading after a crash or a forced-restart
+ * - restore window state
+ * - restart downloads
+ * Set up event listeners for this window's tabs
+ * @param aWindow
+ * Window reference
+ */
+ onLoad: function(aWindow) {
+ // return if window has already been initialized
+ if (aWindow && aWindow.__SSi && this._windows[aWindow.__SSi])
+ return;
+
+ // ignore non-browser windows and windows opened while shutting down
+ if (aWindow.document.documentElement.getAttribute("windowtype") != "navigator:browser" ||
+ this._loadState == STATE_QUITTING)
+ return;
+
+ // assign it a unique identifier (timestamp)
+ aWindow.__SSi = "window" + Date.now();
+
+ // and create its data object
+ this._windows[aWindow.__SSi] = { tabs: [], selected: 0, _closedTabs: [], busy: false };
+
+ // and create its internal data object
+ this._internalWindows[aWindow.__SSi] = { hosts: {} }
+
+ let isPrivateWindow = false;
+ if (PrivateBrowsingUtils.isWindowPrivate(aWindow))
+ this._windows[aWindow.__SSi].isPrivate = isPrivateWindow = true;
+ if (!this._isWindowLoaded(aWindow))
+ this._windows[aWindow.__SSi]._restoring = true;
+ if (!aWindow.toolbar.visible)
+ this._windows[aWindow.__SSi].isPopup = true;
+
+ // perform additional initialization when the first window is loading
+ if (this._loadState == STATE_STOPPED) {
+ this._loadState = STATE_RUNNING;
+ this._lastSaveTime = Date.now();
+
+ // restore a crashed session resp. resume the last session if requested
+ if (this._initialState) {
+ if (isPrivateWindow) {
+ // We're starting with a single private window. Save the state we
+ // actually wanted to restore so that we can do it later in case
+ // the user opens another, non-private window.
+ this._deferredInitialState = gSessionStartup.state;
+ delete this._initialState;
+
+ // Nothing to restore now, notify observers things are complete.
+ Services.obs.notifyObservers(null, NOTIFY_WINDOWS_RESTORED, "");
+ } else {
+ // make sure that the restored tabs are first in the window
+ this._initialState._firstTabs = true;
+ this._restoreCount = this._initialState.windows ? this._initialState.windows.length : 0;
+ this.restoreWindow(aWindow, this._initialState,
+ this._isCmdLineEmpty(aWindow, this._initialState));
+ delete this._initialState;
+
+ // _loadState changed from "stopped" to "running"
+ // force a save operation so that crashes happening during startup are correctly counted
+ this.saveState(true);
+ }
+ }
+ else {
+ // Nothing to restore, notify observers things are complete.
+ Services.obs.notifyObservers(null, NOTIFY_WINDOWS_RESTORED, "");
+
+ // the next delayed save request should execute immediately
+ this._lastSaveTime -= this._interval;
+ }
+ }
+ // this window was opened by _openWindowWithState
+ else if (!this._isWindowLoaded(aWindow)) {
+ let followUp = this._statesToRestore[aWindow.__SS_restoreID].windows.length == 1;
+ this.restoreWindow(aWindow, this._statesToRestore[aWindow.__SS_restoreID], true, followUp);
+ }
+ // The user opened another, non-private window after starting up with
+ // a single private one. Let's restore the session we actually wanted to
+ // restore at startup.
+ else if (this._deferredInitialState && !isPrivateWindow &&
+ aWindow.toolbar.visible) {
+
+ this._deferredInitialState._firstTabs = true;
+ this._restoreCount = this._deferredInitialState.windows ?
+ this._deferredInitialState.windows.length : 0;
+ this.restoreWindow(aWindow, this._deferredInitialState, false);
+ this._deferredInitialState = null;
+ }
+ else if (this._restoreLastWindow && aWindow.toolbar.visible &&
+ this._closedWindows.length && !isPrivateWindow) {
+
+ // default to the most-recently closed window
+ // don't use popup windows
+ let closedWindowState = null;
+ let closedWindowIndex;
+ for (let i = 0; i < this._closedWindows.length; i++) {
+ // Take the first non-popup, point our object at it, and break out.
+ if (!this._closedWindows[i].isPopup) {
+ closedWindowState = this._closedWindows[i];
+ closedWindowIndex = i;
+ break;
+ }
+ }
+
+ if (closedWindowState) {
+ let newWindowState;
+ if (!this._doResumeSession()) {
+ // We want to split the window up into pinned tabs and unpinned tabs.
+ // Pinned tabs should be restored. If there are any remaining tabs,
+ // they should be added back to _closedWindows.
+ // We'll cheat a little bit and reuse _prepDataForDeferredRestore
+ // even though it wasn't built exactly for this.
+ let [appTabsState, normalTabsState] =
+ this._prepDataForDeferredRestore({ windows: [closedWindowState] });
+
+ // These are our pinned tabs, which we should restore
+ if (appTabsState.windows.length) {
+ newWindowState = appTabsState.windows[0];
+ delete newWindowState.__lastSessionWindowID;
+ }
+
+ // In case there were no unpinned tabs, remove the window from _closedWindows
+ if (!normalTabsState.windows.length) {
+ this._closedWindows.splice(closedWindowIndex, 1);
+ }
+ // Or update _closedWindows with the modified state
+ else {
+ delete normalTabsState.windows[0].__lastSessionWindowID;
+ this._closedWindows[closedWindowIndex] = normalTabsState.windows[0];
+ }
+ }
+ else {
+ // If we're just restoring the window, make sure it gets removed from
+ // _closedWindows.
+ this._closedWindows.splice(closedWindowIndex, 1);
+ newWindowState = closedWindowState;
+ delete newWindowState.hidden;
+ }
+ if (newWindowState) {
+ // Ensure that the window state isn't hidden
+ this._restoreCount = 1;
+ let state = { windows: [newWindowState] };
+ this.restoreWindow(aWindow, state, this._isCmdLineEmpty(aWindow, state));
+ }
+ }
+ // we actually restored the session just now.
+ this._prefBranch.setBoolPref("sessionstore.resume_session_once", false);
+ }
+ if (this._restoreLastWindow && aWindow.toolbar.visible) {
+ // always reset (if not a popup window)
+ // we don't want to restore a window directly after, for example,
+ // undoCloseWindow was executed.
+ this._restoreLastWindow = false;
+ }
+
+ var tabbrowser = aWindow.gBrowser;
+
+ // add tab change listeners to all already existing tabs
+ for (let i = 0; i < tabbrowser.tabs.length; i++) {
+ this.onTabAdd(aWindow, tabbrowser.tabs[i], true);
+ }
+ // notification of tab add/remove/selection/show/hide
+ TAB_EVENTS.forEach(function(aEvent) {
+ tabbrowser.tabContainer.addEventListener(aEvent, this, true);
+ }, this);
+ },
+
+ /**
+ * On window open
+ * @param aWindow
+ * Window reference
+ */
+ onOpen: function(aWindow) {
+ var _this = this;
+ aWindow.addEventListener("load", function(aEvent) {
+ aEvent.currentTarget.removeEventListener("load", arguments.callee, false);
+ _this.onLoad(aEvent.currentTarget);
+ }, false);
+ return;
+ },
+
+ /**
+ * On window close...
+ * - remove event listeners from tabs
+ * - save all window data
+ * @param aWindow
+ * Window reference
+ */
+ onClose: function(aWindow) {
+ // this window was about to be restored - conserve its original data, if any
+ let isFullyLoaded = this._isWindowLoaded(aWindow);
+ if (!isFullyLoaded) {
+ if (!aWindow.__SSi)
+ aWindow.__SSi = "window" + Date.now();
+ this._windows[aWindow.__SSi] = this._statesToRestore[aWindow.__SS_restoreID];
+ delete this._statesToRestore[aWindow.__SS_restoreID];
+ delete aWindow.__SS_restoreID;
+ }
+
+ // ignore windows not tracked by SessionStore
+ if (!aWindow.__SSi || !this._windows[aWindow.__SSi]) {
+ return;
+ }
+
+ // notify that the session store will stop tracking this window so that
+ // extensions can store any data about this window in session store before
+ // that's not possible anymore
+ let event = aWindow.document.createEvent("Events");
+ event.initEvent("SSWindowClosing", true, false);
+ aWindow.dispatchEvent(event);
+
+ if (this.windowToFocus && this.windowToFocus == aWindow) {
+ delete this.windowToFocus;
+ }
+
+ var tabbrowser = aWindow.gBrowser;
+
+ TAB_EVENTS.forEach(function(aEvent) {
+ tabbrowser.tabContainer.removeEventListener(aEvent, this, true);
+ }, this);
+
+ // remove the progress listener for this window
+ tabbrowser.removeTabsProgressListener(gRestoreTabsProgressListener);
+
+ let winData = this._windows[aWindow.__SSi];
+ if (this._loadState == STATE_RUNNING) { // window not closed during a regular shut-down
+ // update all window data for a last time
+ this._collectWindowData(aWindow);
+
+ if (isFullyLoaded) {
+ winData.title = aWindow.content.document.title || tabbrowser.selectedTab.label;
+ winData.title = this._replaceLoadingTitle(winData.title, tabbrowser,
+ tabbrowser.selectedTab);
+ let windows = {};
+ windows[aWindow.__SSi] = winData;
+ this._updateCookies(windows);
+ }
+
+ // Until we decide otherwise elsewhere, this window is part of a series
+ // of closing windows to quit.
+ winData._shouldRestore = true;
+
+ // Save the window if it has multiple tabs or a single saveable tab and
+ // it's not private.
+ if (!winData.isPrivate && (winData.tabs.length > 1 ||
+ (winData.tabs.length == 1 && this._shouldSaveTabState(winData.tabs[0])))) {
+ // we don't want to save the busy state
+ delete winData.busy;
+
+ this._closedWindows.unshift(winData);
+ this._capClosedWindows();
+ }
+
+ // clear this window from the list
+ delete this._windows[aWindow.__SSi];
+ delete this._internalWindows[aWindow.__SSi];
+
+ // save the state without this window to disk
+ this.saveStateDelayed();
+ }
+
+ for (let i = 0; i < tabbrowser.tabs.length; i++) {
+ this.onTabRemove(aWindow, tabbrowser.tabs[i], true);
+ }
+
+ // Cache the window state until it is completely gone.
+ DyingWindowCache.set(aWindow, winData);
+
+ delete aWindow.__SSi;
+ },
+
+ /**
+ * On quit application requested
+ */
+ onQuitApplicationRequested: function() {
+ // get a current snapshot of all windows
+ this._forEachBrowserWindow(function(aWindow) {
+ this._collectWindowData(aWindow);
+ });
+ // we must cache this because _getMostRecentBrowserWindow will always
+ // return null by the time quit-application occurs
+ var activeWindow = this._getMostRecentBrowserWindow();
+ if (activeWindow)
+ this.activeWindowSSiCache = activeWindow.__SSi || "";
+ this._dirtyWindows = [];
+ },
+
+ /**
+ * On quit application granted
+ */
+ onQuitApplicationGranted: function() {
+ // freeze the data at what we've got (ignoring closing windows)
+ this._loadState = STATE_QUITTING;
+ },
+
+ /**
+ * On last browser window close
+ */
+ onLastWindowCloseGranted: function() {
+ // last browser window is quitting.
+ // remember to restore the last window when another browser window is opened
+ // do not account for pref(resume_session_once) at this point, as it might be
+ // set by another observer getting this notice after us
+ this._restoreLastWindow = true;
+ },
+
+ /**
+ * On quitting application
+ * @param aData
+ * String type of quitting
+ */
+ onQuitApplication: function(aData) {
+ if (aData == "restart") {
+ this._prefBranch.setBoolPref("sessionstore.resume_session_once", true);
+ // The browser:purge-session-history notification fires after the
+ // quit-application notification so unregister the
+ // browser:purge-session-history notification to prevent clearing
+ // session data on disk on a restart. It is also unnecessary to
+ // perform any other sanitization processing on a restart as the
+ // browser is about to exit anyway.
+ Services.obs.removeObserver(this, "browser:purge-session-history");
+ }
+ else if (this._resume_session_once_on_shutdown != null) {
+ // if the sessionstore.resume_session_once preference was changed by
+ // saveState because crash recovery is disabled then restore the
+ // preference back to the value it was prior to that. This will prevent
+ // SessionStore from always restoring the session when crash recovery is
+ // disabled.
+ this._prefBranch.setBoolPref("sessionstore.resume_session_once",
+ this._resume_session_once_on_shutdown);
+ }
+
+ if (aData != "restart") {
+ // Throw away the previous session on shutdown
+ this._lastSessionState = null;
+ }
+
+ this._loadState = STATE_QUITTING; // just to be sure
+ this._uninit();
+ },
+
+ /**
+ * On purge of session history
+ */
+ onPurgeSessionHistory: function() {
+ var _this = this;
+ _SessionFile.wipe();
+ // If the browser is shutting down, simply return after clearing the
+ // session data on disk as this notification fires after the
+ // quit-application notification so the browser is about to exit.
+ if (this._loadState == STATE_QUITTING)
+ return;
+ this._lastSessionState = null;
+ let openWindows = {};
+ this._forEachBrowserWindow(function(aWindow) {
+ Array.forEach(aWindow.gBrowser.tabs, function(aTab) {
+ delete aTab.linkedBrowser.__SS_data;
+ delete aTab.linkedBrowser.__SS_tabStillLoading;
+ delete aTab.linkedBrowser.__SS_formDataSaved;
+ delete aTab.linkedBrowser.__SS_hostSchemeData;
+ if (aTab.linkedBrowser.__SS_restoreState)
+ this._resetTabRestoringState(aTab);
+ }, this);
+ openWindows[aWindow.__SSi] = true;
+ });
+ // also clear all data about closed tabs and windows
+ for (let ix in this._windows) {
+ if (ix in openWindows) {
+ this._windows[ix]._closedTabs = [];
+ }
+ else {
+ delete this._windows[ix];
+ delete this._internalWindows[ix];
+ }
+ }
+ // also clear all data about closed windows
+ this._closedWindows = [];
+ // give the tabbrowsers a chance to clear their histories first
+ var win = this._getMostRecentBrowserWindow();
+ if (win)
+ win.setTimeout(function() { _this.saveState(true); }, 0);
+ else if (this._loadState == STATE_RUNNING)
+ this.saveState(true);
+ // Delete the private browsing backed up state, if any
+ if ("_stateBackup" in this)
+ delete this._stateBackup;
+
+ this._clearRestoringWindows();
+ },
+
+ /**
+ * On purge of domain data
+ * @param aData
+ * String domain data
+ */
+ onPurgeDomainData: function(aData) {
+ // does a session history entry contain a url for the given domain?
+ function containsDomain(aEntry) {
+ try {
+ if (this._getURIFromString(aEntry.url).host.hasRootDomain(aData))
+ return true;
+ }
+ catch (ex) { /* url had no host at all */ }
+ return aEntry.children && aEntry.children.some(containsDomain, this);
+ }
+ // remove all closed tabs containing a reference to the given domain
+ for (let ix in this._windows) {
+ let closedTabs = this._windows[ix]._closedTabs;
+ for (let i = closedTabs.length - 1; i >= 0; i--) {
+ if (closedTabs[i].state.entries.some(containsDomain, this))
+ closedTabs.splice(i, 1);
+ }
+ }
+ // remove all open & closed tabs containing a reference to the given
+ // domain in closed windows
+ for (let ix = this._closedWindows.length - 1; ix >= 0; ix--) {
+ let closedTabs = this._closedWindows[ix]._closedTabs;
+ let openTabs = this._closedWindows[ix].tabs;
+ let openTabCount = openTabs.length;
+ for (let i = closedTabs.length - 1; i >= 0; i--)
+ if (closedTabs[i].state.entries.some(containsDomain, this))
+ closedTabs.splice(i, 1);
+ for (let j = openTabs.length - 1; j >= 0; j--) {
+ if (openTabs[j].entries.some(containsDomain, this)) {
+ openTabs.splice(j, 1);
+ if (this._closedWindows[ix].selected > j)
+ this._closedWindows[ix].selected--;
+ }
+ }
+ if (openTabs.length == 0) {
+ this._closedWindows.splice(ix, 1);
+ }
+ else if (openTabs.length != openTabCount) {
+ // Adjust the window's title if we removed an open tab
+ let selectedTab = openTabs[this._closedWindows[ix].selected - 1];
+ // some duplication from restoreHistory - make sure we get the correct title
+ let activeIndex = (selectedTab.index || selectedTab.entries.length) - 1;
+ if (activeIndex >= selectedTab.entries.length)
+ activeIndex = selectedTab.entries.length - 1;
+ this._closedWindows[ix].title = selectedTab.entries[activeIndex].title;
+ }
+ }
+ if (this._loadState == STATE_RUNNING)
+ this.saveState(true);
+
+ this._clearRestoringWindows();
+ },
+
+ /**
+ * On preference change
+ * @param aData
+ * String preference changed
+ */
+ onPrefChange: function(aData) {
+ switch (aData) {
+ // if the user decreases the max number of closed tabs they want
+ // preserved update our internal states to match that max
+ case "sessionstore.max_tabs_undo":
+ this._max_tabs_undo = this._prefBranch.getIntPref("sessionstore.max_tabs_undo");
+ for (let ix in this._windows) {
+ this._windows[ix]._closedTabs.splice(this._max_tabs_undo, this._windows[ix]._closedTabs.length);
+ }
+ break;
+ case "sessionstore.max_windows_undo":
+ this._max_windows_undo = this._prefBranch.getIntPref("sessionstore.max_windows_undo");
+ this._capClosedWindows();
+ break;
+ case "sessionstore.interval":
+ this._interval = this._prefBranch.getIntPref("sessionstore.interval");
+ // reset timer and save
+ if (this._saveTimer) {
+ this._saveTimer.cancel();
+ this._saveTimer = null;
+ }
+ this.saveStateDelayed(null, -1);
+ break;
+ case "sessionstore.resume_from_crash":
+ this._resume_from_crash = this._prefBranch.getBoolPref("sessionstore.resume_from_crash");
+ // restore original resume_session_once preference if set in saveState
+ if (this._resume_session_once_on_shutdown != null) {
+ this._prefBranch.setBoolPref("sessionstore.resume_session_once",
+ this._resume_session_once_on_shutdown);
+ this._resume_session_once_on_shutdown = null;
+ }
+ // either create the file with crash recovery information or remove it
+ // (when _loadState is not STATE_RUNNING, that file is used for session resuming instead)
+ if (!this._resume_from_crash)
+ _SessionFile.wipe();
+ this.saveState(true);
+ break;
+ }
+ },
+
+ /**
+ * On timer callback
+ */
+ onTimerCallback: function() {
+ this._saveTimer = null;
+ this.saveState();
+ },
+
+ /**
+ * set up listeners for a new tab
+ * @param aWindow
+ * Window reference
+ * @param aTab
+ * Tab reference
+ * @param aNoNotification
+ * bool Do not save state if we're updating an existing tab
+ */
+ onTabAdd: function(aWindow, aTab, aNoNotification) {
+ let browser = aTab.linkedBrowser;
+ browser.addEventListener("load", this, true);
+
+ let mm = browser.messageManager;
+ MESSAGES.forEach(msg => mm.addMessageListener(msg, this));
+
+ if (!aNoNotification) {
+ this.saveStateDelayed(aWindow);
+ }
+ },
+
+ /**
+ * remove listeners for a tab
+ * @param aWindow
+ * Window reference
+ * @param aTab
+ * Tab reference
+ * @param aNoNotification
+ * bool Do not save state if we're updating an existing tab
+ */
+ onTabRemove: function(aWindow, aTab, aNoNotification) {
+ let browser = aTab.linkedBrowser;
+ browser.removeEventListener("load", this, true);
+
+ let mm = browser.messageManager;
+ MESSAGES.forEach(msg => mm.removeMessageListener(msg, this));
+
+ delete browser.__SS_data;
+ delete browser.__SS_tabStillLoading;
+ delete browser.__SS_formDataSaved;
+ delete browser.__SS_hostSchemeData;
+
+ // If this tab was in the middle of restoring or still needs to be restored,
+ // we need to reset that state. If the tab was restoring, we will attempt to
+ // restore the next tab.
+ let previousState = browser.__SS_restoreState;
+ if (previousState) {
+ this._resetTabRestoringState(aTab);
+ if (previousState == TAB_STATE_RESTORING)
+ this.restoreNextTab();
+ }
+
+ if (!aNoNotification) {
+ this.saveStateDelayed(aWindow);
+ }
+ },
+
+ /**
+ * When a tab closes, collect its properties
+ * @param aWindow
+ * Window reference
+ * @param aTab
+ * Tab reference
+ */
+ onTabClose: function(aWindow, aTab) {
+ // notify the tabbrowser that the tab state will be retrieved for the last time
+ // (so that extension authors can easily set data on soon-to-be-closed tabs)
+ var event = aWindow.document.createEvent("Events");
+ event.initEvent("SSTabClosing", true, false);
+ aTab.dispatchEvent(event);
+
+ // don't update our internal state if we don't have to
+ if (this._max_tabs_undo == 0) {
+ return;
+ }
+
+ // make sure that the tab related data is up-to-date
+ var tabState = this._collectTabData(aTab);
+ this._updateTextAndScrollDataForTab(aWindow, aTab.linkedBrowser, tabState);
+
+ // store closed-tab data for undo
+ if (this._shouldSaveTabState(tabState)) {
+ let tabTitle = aTab.label;
+ let tabbrowser = aWindow.gBrowser;
+ tabTitle = this._replaceLoadingTitle(tabTitle, tabbrowser, aTab);
+
+ this._windows[aWindow.__SSi]._closedTabs.unshift({
+ state: tabState,
+ title: tabTitle,
+ image: tabbrowser.getIcon(aTab),
+ pos: aTab._tPos
+ });
+ var length = this._windows[aWindow.__SSi]._closedTabs.length;
+ if (length > this._max_tabs_undo)
+ this._windows[aWindow.__SSi]._closedTabs.splice(this._max_tabs_undo, length - this._max_tabs_undo);
+ }
+ },
+
+ /**
+ * When a tab loads, save state.
+ * @param aWindow
+ * Window reference
+ * @param aBrowser
+ * Browser reference
+ */
+ onTabLoad: function(aWindow, aBrowser) {
+ // react on "load" and solitary "pageshow" events (the first "pageshow"
+ // following "load" is too late for deleting the data caches)
+ // It's possible to get a load event after calling stop on a browser (when
+ // overwriting tabs). We want to return early if the tab hasn't been restored yet.
+ if (aBrowser.__SS_restoreState &&
+ aBrowser.__SS_restoreState == TAB_STATE_NEEDS_RESTORE) {
+ return;
+ }
+
+ delete aBrowser.__SS_data;
+ delete aBrowser.__SS_tabStillLoading;
+ delete aBrowser.__SS_formDataSaved;
+ this.saveStateDelayed(aWindow);
+
+ },
+
+ /**
+ * Called when a browser sends the "input" notification
+ * @param aWindow
+ * Window reference
+ * @param aBrowser
+ * Browser reference
+ */
+ onTabInput: function(aWindow, aBrowser) {
+ // deleting __SS_formDataSaved will cause us to recollect form data
+ delete aBrowser.__SS_formDataSaved;
+
+ this.saveStateDelayed(aWindow, 3000);
+ },
+
+ /**
+ * When a tab is selected, save session data
+ * @param aWindow
+ * Window reference
+ */
+ onTabSelect: function(aWindow) {
+ if (this._loadState == STATE_RUNNING) {
+ this._windows[aWindow.__SSi].selected = aWindow.gBrowser.tabContainer.selectedIndex;
+
+ let tab = aWindow.gBrowser.selectedTab;
+ // If __SS_restoreState is still on the browser and it is
+ // TAB_STATE_NEEDS_RESTORE, then then we haven't restored
+ // this tab yet. Explicitly call restoreTab to kick off the restore.
+ if (tab.linkedBrowser.__SS_restoreState &&
+ tab.linkedBrowser.__SS_restoreState == TAB_STATE_NEEDS_RESTORE)
+ this.restoreTab(tab);
+
+ }
+ },
+
+ onTabShow: function(aWindow, aTab) {
+ // If the tab hasn't been restored yet, move it into the right bucket
+ if (aTab.linkedBrowser.__SS_restoreState &&
+ aTab.linkedBrowser.__SS_restoreState == TAB_STATE_NEEDS_RESTORE) {
+ TabRestoreQueue.hiddenToVisible(aTab);
+
+ // let's kick off tab restoration again to ensure this tab gets restored
+ // with "restore_hidden_tabs" == false (now that it has become visible)
+ this.restoreNextTab();
+ }
+
+ // Default delay of 2 seconds gives enough time to catch multiple TabShow
+ // events due to changing groups in Panorama.
+ this.saveStateDelayed(aWindow);
+ },
+
+ onTabHide: function(aWindow, aTab) {
+ // If the tab hasn't been restored yet, move it into the right bucket
+ if (aTab.linkedBrowser.__SS_restoreState &&
+ aTab.linkedBrowser.__SS_restoreState == TAB_STATE_NEEDS_RESTORE) {
+ TabRestoreQueue.visibleToHidden(aTab);
+ }
+
+ // Default delay of 2 seconds gives enough time to catch multiple TabHide
+ // events due to changing groups in Panorama.
+ this.saveStateDelayed(aWindow);
+ },
+
+ /* ........ nsISessionStore API .............. */
+
+ getBrowserState: function() {
+ return this._toJSONString(this._getCurrentState());
+ },
+
+ setBrowserState: function(aState) {
+ this._handleClosedWindows();
+
+ try {
+ var state = JSON.parse(aState);
+ }
+ catch (ex) { /* invalid state object - don't restore anything */ }
+ if (!state || !state.windows)
+ throw (Components.returnCode = Cr.NS_ERROR_INVALID_ARG);
+
+ this._browserSetState = true;
+
+ // Make sure the priority queue is emptied out
+ this._resetRestoringState();
+
+ var window = this._getMostRecentBrowserWindow();
+ if (!window) {
+ this._restoreCount = 1;
+ this._openWindowWithState(state);
+ return;
+ }
+
+ // close all other browser windows
+ this._forEachBrowserWindow(function(aWindow) {
+ if (aWindow != window) {
+ aWindow.close();
+ this.onClose(aWindow);
+ }
+ });
+
+ // make sure closed window data isn't kept
+ this._closedWindows = [];
+
+ // determine how many windows are meant to be restored
+ this._restoreCount = state.windows ? state.windows.length : 0;
+
+ // restore to the given state
+ this.restoreWindow(window, state, true);
+ },
+
+ getWindowState: function(aWindow) {
+ if ("__SSi" in aWindow) {
+ return this._toJSONString(this._getWindowState(aWindow));
+ }
+
+ if (DyingWindowCache.has(aWindow)) {
+ let data = DyingWindowCache.get(aWindow);
+ return this._toJSONString({ windows: [data] });
+ }
+
+ throw (Components.returnCode = Cr.NS_ERROR_INVALID_ARG);
+ },
+
+ setWindowState: function(aWindow, aState, aOverwrite) {
+ if (!aWindow.__SSi)
+ throw (Components.returnCode = Cr.NS_ERROR_INVALID_ARG);
+
+ this.restoreWindow(aWindow, aState, aOverwrite);
+ },
+
+ getTabState: function(aTab) {
+ if (!aTab.ownerDocument || !aTab.ownerDocument.defaultView.__SSi)
+ throw (Components.returnCode = Cr.NS_ERROR_INVALID_ARG);
+
+ var tabState = this._collectTabData(aTab);
+
+ var window = aTab.ownerDocument.defaultView;
+ this._updateTextAndScrollDataForTab(window, aTab.linkedBrowser, tabState);
+
+ return this._toJSONString(tabState);
+ },
+
+ setTabState: function(aTab, aState) {
+ var tabState = JSON.parse(aState);
+ if (!tabState.entries || !aTab.ownerDocument || !aTab.ownerDocument.defaultView.__SSi)
+ throw (Components.returnCode = Cr.NS_ERROR_INVALID_ARG);
+
+ var window = aTab.ownerDocument.defaultView;
+ this._setWindowStateBusy(window);
+ this.restoreHistoryPrecursor(window, [aTab], [tabState], 0, 0, 0);
+ },
+
+ duplicateTab: function(aWindow, aTab, aDelta) {
+ if (!aTab.ownerDocument || !aTab.ownerDocument.defaultView.__SSi ||
+ !aWindow.getBrowser)
+ throw (Components.returnCode = Cr.NS_ERROR_INVALID_ARG);
+
+ var tabState = this._collectTabData(aTab, true);
+ var sourceWindow = aTab.ownerDocument.defaultView;
+ this._updateTextAndScrollDataForTab(sourceWindow, aTab.linkedBrowser, tabState, true);
+ tabState.index += aDelta;
+ tabState.index = Math.max(1, Math.min(tabState.index, tabState.entries.length));
+ tabState.pinned = false;
+
+ this._setWindowStateBusy(aWindow);
+ let newTab = aTab == aWindow.gBrowser.selectedTab ?
+ aWindow.gBrowser.addTab(null, {relatedToCurrent: true, ownerTab: aTab}) :
+ aWindow.gBrowser.addTab();
+
+ this.restoreHistoryPrecursor(aWindow, [newTab], [tabState], 0, 0, 0,
+ true /* Load this tab right away. */);
+
+ return newTab;
+ },
+
+ getClosedTabCount: function(aWindow) {
+ if ("__SSi" in aWindow) {
+ return this._windows[aWindow.__SSi]._closedTabs.length;
+ }
+
+ if (DyingWindowCache.has(aWindow)) {
+ return DyingWindowCache.get(aWindow)._closedTabs.length;
+ }
+
+ throw (Components.returnCode = Cr.NS_ERROR_INVALID_ARG);
+ },
+
+ getClosedTabData: function(aWindow) {
+ if ("__SSi" in aWindow) {
+ return this._toJSONString(this._windows[aWindow.__SSi]._closedTabs);
+ }
+
+ if (DyingWindowCache.has(aWindow)) {
+ let data = DyingWindowCache.get(aWindow);
+ return this._toJSONString(data._closedTabs);
+ }
+
+ throw (Components.returnCode = Cr.NS_ERROR_INVALID_ARG);
+ },
+
+ undoCloseTab: function(aWindow, aIndex) {
+ if (!aWindow.__SSi)
+ throw (Components.returnCode = Cr.NS_ERROR_INVALID_ARG);
+
+ var closedTabs = this._windows[aWindow.__SSi]._closedTabs;
+
+ // default to the most-recently closed tab
+ aIndex = aIndex || 0;
+ if (!(aIndex in closedTabs))
+ throw (Components.returnCode = Cr.NS_ERROR_INVALID_ARG);
+
+ // fetch the data of closed tab, while removing it from the array
+ let closedTab = closedTabs.splice(aIndex, 1).shift();
+ let closedTabState = closedTab.state;
+
+ this._setWindowStateBusy(aWindow);
+ // create a new tab
+ let tabbrowser = aWindow.gBrowser;
+ let tab = tabbrowser.addTab();
+
+ // restore tab content
+ this.restoreHistoryPrecursor(aWindow, [tab], [closedTabState], 1, 0, 0);
+
+ // restore the tab's position
+ tabbrowser.moveTabTo(tab, closedTab.pos);
+
+ // focus the tab's content area (bug 342432)
+ tab.linkedBrowser.focus();
+
+ return tab;
+ },
+
+ forgetClosedTab: function(aWindow, aIndex) {
+ if (!aWindow.__SSi)
+ throw (Components.returnCode = Cr.NS_ERROR_INVALID_ARG);
+
+ var closedTabs = this._windows[aWindow.__SSi]._closedTabs;
+
+ // default to the most-recently closed tab
+ aIndex = aIndex || 0;
+ if (!(aIndex in closedTabs))
+ throw (Components.returnCode = Cr.NS_ERROR_INVALID_ARG);
+
+ // remove closed tab from the array
+ closedTabs.splice(aIndex, 1);
+ },
+
+ getClosedWindowCount: function() {
+ return this._closedWindows.length;
+ },
+
+ getClosedWindowData: function() {
+ return this._toJSONString(this._closedWindows);
+ },
+
+ undoCloseWindow: function(aIndex) {
+ if (!(aIndex in this._closedWindows))
+ throw (Components.returnCode = Cr.NS_ERROR_INVALID_ARG);
+
+ // reopen the window
+ let state = { windows: this._closedWindows.splice(aIndex, 1) };
+ let window = this._openWindowWithState(state);
+ this.windowToFocus = window;
+ return window;
+ },
+
+ forgetClosedWindow: function(aIndex) {
+ // default to the most-recently closed window
+ aIndex = aIndex || 0;
+ if (!(aIndex in this._closedWindows))
+ throw (Components.returnCode = Cr.NS_ERROR_INVALID_ARG);
+
+ // remove closed window from the array
+ this._closedWindows.splice(aIndex, 1);
+ },
+
+ getWindowValue: function(aWindow, aKey) {
+ if ("__SSi" in aWindow) {
+ var data = this._windows[aWindow.__SSi].extData || {};
+ return data[aKey] || "";
+ }
+
+ if (DyingWindowCache.has(aWindow)) {
+ let data = DyingWindowCache.get(aWindow).extData || {};
+ return data[aKey] || "";
+ }
+
+ throw (Components.returnCode = Cr.NS_ERROR_INVALID_ARG);
+ },
+
+ setWindowValue: function(aWindow, aKey, aStringValue) {
+ if (aWindow.__SSi) {
+ if (!this._windows[aWindow.__SSi].extData) {
+ this._windows[aWindow.__SSi].extData = {};
+ }
+ this._windows[aWindow.__SSi].extData[aKey] = aStringValue;
+ this.saveStateDelayed(aWindow);
+ }
+ else {
+ throw (Components.returnCode = Cr.NS_ERROR_INVALID_ARG);
+ }
+ },
+
+ deleteWindowValue: function(aWindow, aKey) {
+ if (aWindow.__SSi && this._windows[aWindow.__SSi].extData &&
+ this._windows[aWindow.__SSi].extData[aKey])
+ delete this._windows[aWindow.__SSi].extData[aKey];
+ },
+
+ getTabValue: function(aTab, aKey) {
+ let data = {};
+ if (aTab.__SS_extdata) {
+ data = aTab.__SS_extdata;
+ }
+ else if (aTab.linkedBrowser.__SS_data && aTab.linkedBrowser.__SS_data.extData) {
+ // If the tab hasn't been fully restored, get the data from the to-be-restored data
+ data = aTab.linkedBrowser.__SS_data.extData;
+ }
+ return data[aKey] || "";
+ },
+
+ setTabValue: function(aTab, aKey, aStringValue) {
+ // If the tab hasn't been restored, then set the data there, otherwise we
+ // could lose newly added data.
+ let saveTo;
+ if (aTab.__SS_extdata) {
+ saveTo = aTab.__SS_extdata;
+ }
+ else if (aTab.linkedBrowser.__SS_data && aTab.linkedBrowser.__SS_data.extData) {
+ saveTo = aTab.linkedBrowser.__SS_data.extData;
+ }
+ else {
+ aTab.__SS_extdata = {};
+ saveTo = aTab.__SS_extdata;
+ }
+ saveTo[aKey] = aStringValue;
+ this.saveStateDelayed(aTab.ownerDocument.defaultView);
+ },
+
+ deleteTabValue: function(aTab, aKey) {
+ // We want to make sure that if data is accessed early, we attempt to delete
+ // that data from __SS_data as well. Otherwise we'll throw in cases where
+ // data can be set or read.
+ let deleteFrom;
+ if (aTab.__SS_extdata) {
+ deleteFrom = aTab.__SS_extdata;
+ }
+ else if (aTab.linkedBrowser.__SS_data && aTab.linkedBrowser.__SS_data.extData) {
+ deleteFrom = aTab.linkedBrowser.__SS_data.extData;
+ }
+
+ if (deleteFrom && deleteFrom[aKey])
+ delete deleteFrom[aKey];
+ },
+
+ persistTabAttribute: function(aName) {
+ if (TabAttributes.persist(aName)) {
+ this.saveStateDelayed();
+ }
+ },
+
+ /**
+ * Restores the session state stored in _lastSessionState. This will attempt
+ * to merge data into the current session. If a window was opened at startup
+ * with pinned tab(s), then the remaining data from the previous session for
+ * that window will be opened into that winddow. Otherwise new windows will
+ * be opened.
+ */
+ restoreLastSession: function() {
+ // Use the public getter since it also checks PB mode
+ if (!this.canRestoreLastSession)
+ throw (Components.returnCode = Cr.NS_ERROR_FAILURE);
+
+ // First collect each window with its id...
+ let windows = {};
+ this._forEachBrowserWindow(function(aWindow) {
+ if (aWindow.__SS_lastSessionWindowID)
+ windows[aWindow.__SS_lastSessionWindowID] = aWindow;
+ });
+
+ let lastSessionState = this._lastSessionState;
+
+ // This shouldn't ever be the case...
+ if (!lastSessionState.windows.length)
+ throw (Components.returnCode = Cr.NS_ERROR_UNEXPECTED);
+
+ // We're technically doing a restore, so set things up so we send the
+ // notification when we're done. We want to send "sessionstore-browser-state-restored".
+ this._restoreCount = lastSessionState.windows.length;
+ this._browserSetState = true;
+
+ // We want to re-use the last opened window instead of opening a new one in
+ // the case where it's "empty" and not associated with a window in the session.
+ // We will do more processing via _prepWindowToRestoreInto if we need to use
+ // the lastWindow.
+ let lastWindow = this._getMostRecentBrowserWindow();
+ let canUseLastWindow = lastWindow &&
+ !lastWindow.__SS_lastSessionWindowID;
+
+ // Restore into windows or open new ones as needed.
+ for (let i = 0; i < lastSessionState.windows.length; i++) {
+ let winState = lastSessionState.windows[i];
+ let lastSessionWindowID = winState.__lastSessionWindowID;
+ // delete lastSessionWindowID so we don't add that to the window again
+ delete winState.__lastSessionWindowID;
+
+ // See if we can use an open window. First try one that is associated with
+ // the state we're trying to restore and then fallback to the last selected
+ // window.
+ let windowToUse = windows[lastSessionWindowID];
+ if (!windowToUse && canUseLastWindow) {
+ windowToUse = lastWindow;
+ canUseLastWindow = false;
+ }
+
+ let [canUseWindow, canOverwriteTabs] = this._prepWindowToRestoreInto(windowToUse);
+
+ // If there's a window already open that we can restore into, use that
+ if (canUseWindow) {
+ // Since we're not overwriting existing tabs, we want to merge _closedTabs,
+ // putting existing ones first. Then make sure we're respecting the max pref.
+ if (winState._closedTabs && winState._closedTabs.length) {
+ let curWinState = this._windows[windowToUse.__SSi];
+ curWinState._closedTabs = curWinState._closedTabs.concat(winState._closedTabs);
+ curWinState._closedTabs.splice(this._prefBranch.getIntPref("sessionstore.max_tabs_undo"), curWinState._closedTabs.length);
+ }
+
+ // Restore into that window - pretend it's a followup since we'll already
+ // have a focused window.
+ //XXXzpao This is going to merge extData together (taking what was in
+ // winState over what is in the window already. The hack we have
+ // in _preWindowToRestoreInto will prevent most (all?) Panorama
+ // weirdness but we will still merge other extData.
+ // Bug 588217 should make this go away by merging the group data.
+ this.restoreWindow(windowToUse, { windows: [winState] }, canOverwriteTabs, true);
+ }
+ else {
+ this._openWindowWithState({ windows: [winState] });
+ }
+ }
+
+ // Merge closed windows from this session with ones from last session
+ if (lastSessionState._closedWindows) {
+ this._closedWindows = this._closedWindows.concat(lastSessionState._closedWindows);
+ this._capClosedWindows();
+ }
+
+#ifdef MOZ_DEVTOOLS
+ // Scratchpad
+ if (lastSessionState.scratchpads) {
+ ScratchpadManager.restoreSession(lastSessionState.scratchpads);
+ }
+
+ // The Browser Console
+ if (lastSessionState.browserConsole) {
+ HUDService.restoreBrowserConsoleSession();
+ }
+#endif
+
+ // Set data that persists between sessions
+ this._recentCrashes = lastSessionState.session &&
+ lastSessionState.session.recentCrashes || 0;
+ this._sessionStartTime = lastSessionState.session &&
+ lastSessionState.session.startTime ||
+ this._sessionStartTime;
+
+ this._lastSessionState = null;
+ },
+
+ /**
+ * See if aWindow is usable for use when restoring a previous session via
+ * restoreLastSession. If usable, prepare it for use.
+ *
+ * @param aWindow
+ * the window to inspect & prepare
+ * @returns [canUseWindow, canOverwriteTabs]
+ * canUseWindow: can the window be used to restore into
+ * canOverwriteTabs: all of the current tabs are home pages and we
+ * can overwrite them
+ */
+ _prepWindowToRestoreInto: function(aWindow) {
+ if (!aWindow)
+ return [false, false];
+
+ let event = aWindow.document.createEvent("Events");
+ event.initEvent("SSRestoreIntoWindow", true, true);
+
+ // Check if we can use the window.
+ if (!aWindow.dispatchEvent(event))
+ return [false, false];
+
+ // We might be able to overwrite the existing tabs instead of just adding
+ // the previous session's tabs to the end. This will be set if possible.
+ let canOverwriteTabs = false;
+
+ // Look at the open tabs in comparison to home pages. If all the tabs are
+ // home pages then we'll end up overwriting all of them. Otherwise we'll
+ // just close the tabs that match home pages. Tabs with the about:blank
+ // URI will always be overwritten.
+ let homePages = ["about:blank"];
+ let removableTabs = [];
+ let tabbrowser = aWindow.gBrowser;
+ let normalTabsLen = tabbrowser.tabs.length - tabbrowser._numPinnedTabs;
+ let startupPref = this._prefBranch.getIntPref("startup.page");
+ if (startupPref == 1)
+ homePages = homePages.concat(aWindow.gHomeButton.getHomePage().split("|"));
+
+ for (let i = tabbrowser._numPinnedTabs; i < tabbrowser.tabs.length; i++) {
+ let tab = tabbrowser.tabs[i];
+ if (homePages.indexOf(tab.linkedBrowser.currentURI.spec) != -1) {
+ removableTabs.push(tab);
+ }
+ }
+
+ if (tabbrowser.tabs.length == removableTabs.length) {
+ canOverwriteTabs = true;
+ }
+ else {
+ // If we're not overwriting all of the tabs, then close the home tabs.
+ for (let i = removableTabs.length - 1; i >= 0; i--) {
+ tabbrowser.removeTab(removableTabs.pop(), { animate: false });
+ }
+ }
+
+ return [true, canOverwriteTabs];
+ },
+
+ /* ........ Saving Functionality .............. */
+
+ /**
+ * Store all session data for a window
+ * @param aWindow
+ * Window reference
+ */
+ _saveWindowHistory: function(aWindow) {
+ var tabbrowser = aWindow.gBrowser;
+ var tabs = tabbrowser.tabs;
+ var tabsData = this._windows[aWindow.__SSi].tabs = [];
+
+ for (var i = 0; i < tabs.length; i++)
+ tabsData.push(this._collectTabData(tabs[i]));
+
+ this._windows[aWindow.__SSi].selected = tabbrowser.mTabBox.selectedIndex + 1;
+ },
+
+ /**
+ * Collect data related to a single tab
+ * @param aTab
+ * tabbrowser tab
+ * @param aFullData
+ * always return privacy sensitive data (use with care)
+ * @returns object
+ */
+ _collectTabData: function(aTab, aFullData) {
+ var tabData = { entries: [], lastAccessed: aTab.lastAccessed };
+ var browser = aTab.linkedBrowser;
+
+ if (!browser || !browser.currentURI)
+ // can happen when calling this function right after .addTab()
+ return tabData;
+ else if (browser.__SS_data && browser.__SS_tabStillLoading) {
+ // use the data to be restored when the tab hasn't been completely loaded
+ tabData = browser.__SS_data;
+ if (aTab.pinned)
+ tabData.pinned = true;
+ else
+ delete tabData.pinned;
+ tabData.hidden = aTab.hidden;
+
+ // If __SS_extdata is set then we'll use that since it might be newer.
+ if (aTab.__SS_extdata)
+ tabData.extData = aTab.__SS_extdata;
+ // If it exists but is empty then a key was likely deleted. In that case just
+ // delete extData.
+ if (tabData.extData && !Object.keys(tabData.extData).length)
+ delete tabData.extData;
+ return tabData;
+ }
+
+ var history = null;
+ try {
+ history = browser.sessionHistory;
+ }
+ catch (ex) { } // this could happen if we catch a tab during (de)initialization
+
+ // Limit number of back/forward button history entries to save
+ let oldest, newest;
+ let maxSerializeBack = this._prefBranch.getIntPref("sessionstore.max_serialize_back");
+ if (maxSerializeBack >= 0) {
+ oldest = Math.max(0, history.index - maxSerializeBack);
+ } else { // History.getEntryAtIndex(0, ...) is the oldest.
+ oldest = 0;
+ }
+ let maxSerializeFwd = this._prefBranch.getIntPref("sessionstore.max_serialize_forward");
+ if (maxSerializeFwd >= 0) {
+ newest = Math.min(history.count - 1, history.index + maxSerializeFwd);
+ } else { // History.getEntryAtIndex(history.count - 1, ...) is the newest.
+ newest = history.count - 1;
+ }
+
+ // XXXzeniko anchor navigation doesn't reset __SS_data, so we could reuse
+ // data even when we shouldn't (e.g. Back, different anchor)
+ // Warning: this is required to save form data and scrolling position!
+ if (history && browser.__SS_data &&
+ browser.__SS_data.entries[history.index] &&
+ browser.__SS_data.entries[history.index].url == browser.currentURI.spec &&
+ history.index < this._sessionhistory_max_entries - 1 && !aFullData) {
+ try {
+ tabData.entries = browser.__SS_data.entries.slice(oldest, newest + 1);
+ }
+ catch (ex) {
+ // No errors are expected above, but we use try-catch to keep sessionstore.js safe
+ NS_ASSERT(false, "SessionStore failed to slice history from browser.__SS_data");
+ }
+
+ // Set the one-based index of the currently active tab, ensuring it isn't out of bounds
+ tabData.index = Math.min(history.index - oldest + 1, tabData.entries.length);
+ }
+ else if (history && history.count > 0) {
+ browser.__SS_hostSchemeData = [];
+ try {
+ for (var j = oldest; j <= newest; j++) {
+ let entry = this._serializeHistoryEntry(history.getEntryAtIndex(j, false),
+ aFullData, aTab.pinned, browser.__SS_hostSchemeData);
+ tabData.entries.push(entry);
+ }
+ }
+ catch (ex) {
+ // In some cases, getEntryAtIndex will throw. This seems to be due to
+ // history.count being higher than it should be. By doing this in a
+ // try-catch, we'll update history to where it breaks, assert for
+ // non-release builds, and still save sessionstore.js.
+ NS_ASSERT(false, "SessionStore failed gathering complete history " +
+ "for the focused window/tab. See bug 669196.");
+ }
+
+ // Set the one-based index of the currently active tab, ensuring it isn't out of bounds
+ tabData.index = Math.min(history.index - oldest + 1, tabData.entries.length);
+
+ // make sure not to cache privacy sensitive data which shouldn't get out
+ if (!aFullData)
+ browser.__SS_data = tabData;
+ }
+ else if (browser.currentURI.spec != "about:blank" ||
+ browser.contentDocument.body.hasChildNodes()) {
+ tabData.entries[0] = { url: browser.currentURI.spec };
+ tabData.index = 1;
+ }
+
+ // If there is a userTypedValue set, then either the user has typed something
+ // in the URL bar, or a new tab was opened with a URI to load. userTypedClear
+ // is used to indicate whether the tab was in some sort of loading state with
+ // userTypedValue.
+ if (browser.userTypedValue) {
+ tabData.userTypedValue = browser.userTypedValue;
+ // We always used to keep track of the loading state as an integer, where
+ // '0' indicated the user had typed since the last load (or no load was
+ // ongoing), and any positive value indicated we had started a load since
+ // the last time the user typed in the URL bar. Mimic this to keep the
+ // session store representation in sync, even though we now represent this
+ // more explicitly:
+ tabData.userTypedClear = browser.didStartLoadSinceLastUserTyping() ? 1 : 0;
+ } else {
+ delete tabData.userTypedValue;
+ delete tabData.userTypedClear;
+ }
+
+ if (aTab.pinned)
+ tabData.pinned = true;
+ else
+ delete tabData.pinned;
+ tabData.hidden = aTab.hidden;
+
+ var disallow = [];
+ for (let cap of gDocShellCapabilities(browser.docShell))
+ if (!browser.docShell["allow" + cap])
+ disallow.push(cap);
+ if (disallow.length > 0)
+ tabData.disallow = disallow.join(",");
+ else if (tabData.disallow)
+ delete tabData.disallow;
+
+ // Save tab attributes.
+ tabData.attributes = TabAttributes.get(aTab);
+
+ // Store the tab icon.
+ let tabbrowser = aTab.ownerDocument.defaultView.gBrowser;
+ tabData.image = tabbrowser.getIcon(aTab);
+
+ if (aTab.__SS_extdata)
+ tabData.extData = aTab.__SS_extdata;
+ else if (tabData.extData)
+ delete tabData.extData;
+
+ if (history && browser.docShell instanceof Ci.nsIDocShell) {
+ let storageData = SessionStorage.serialize(browser.docShell, aFullData)
+ if (Object.keys(storageData).length)
+ tabData.storage = storageData;
+ }
+
+ return tabData;
+ },
+
+ /**
+ * Get an object that is a serialized representation of a History entry
+ * Used for data storage
+ * @param aEntry
+ * nsISHEntry instance
+ * @param aFullData
+ * always return privacy sensitive data (use with care)
+ * @param aIsPinned
+ * the tab is pinned and should be treated differently for privacy
+ * @param aHostSchemeData
+ * an array of objects with host & scheme keys
+ * @returns object
+ */
+ _serializeHistoryEntry:
+ function(aEntry, aFullData, aIsPinned, aHostSchemeData) {
+ var entry = { url: aEntry.URI.spec };
+
+ try {
+ // throwing is expensive, we know that about: pages will throw
+ if (entry.url.indexOf("about:") != 0)
+ aHostSchemeData.push({ host: aEntry.URI.host, scheme: aEntry.URI.scheme });
+ }
+ catch (ex) {
+ // We just won't attempt to get cookies for this entry.
+ }
+
+ if (aEntry.title && aEntry.title != entry.url) {
+ entry.title = aEntry.title;
+ }
+ if (aEntry.isSubFrame) {
+ entry.subframe = true;
+ }
+ if (!(aEntry instanceof Ci.nsISHEntry)) {
+ return entry;
+ }
+
+ var cacheKey = aEntry.cacheKey;
+ if (cacheKey && cacheKey instanceof Ci.nsISupportsPRUint32 &&
+ cacheKey.data != 0) {
+ // XXXbz would be better to have cache keys implement
+ // nsISerializable or something.
+ entry.cacheKey = cacheKey.data;
+ }
+ entry.ID = aEntry.ID;
+ entry.docshellID = aEntry.docshellID;
+
+ if (aEntry.referrerURI)
+ entry.referrer = aEntry.referrerURI.spec;
+
+ if (aEntry.srcdocData)
+ entry.srcdocData = aEntry.srcdocData;
+
+ if (aEntry.isSrcdocEntry)
+ entry.isSrcdocEntry = aEntry.isSrcdocEntry;
+
+ if (aEntry.contentType)
+ entry.contentType = aEntry.contentType;
+
+ var x = {}, y = {};
+ aEntry.getScrollPosition(x, y);
+ if (x.value != 0 || y.value != 0)
+ entry.scroll = x.value + "," + y.value;
+
+ try {
+ var prefPostdata = this._prefBranch.getIntPref("sessionstore.postdata");
+ if (aEntry.postData && (aFullData || prefPostdata &&
+ this.checkPrivacyLevel(aEntry.URI.schemeIs("https"), aIsPinned))) {
+ aEntry.postData.QueryInterface(Ci.nsISeekableStream).
+ seek(Ci.nsISeekableStream.NS_SEEK_SET, 0);
+ var stream = Cc["@mozilla.org/binaryinputstream;1"].
+ createInstance(Ci.nsIBinaryInputStream);
+ stream.setInputStream(aEntry.postData);
+ var postBytes = stream.readByteArray(stream.available());
+ var postdata = String.fromCharCode.apply(null, postBytes);
+ if (aFullData || prefPostdata == -1 ||
+ postdata.replace(/^(Content-.*\r\n)+(\r\n)*/, "").length <=
+ prefPostdata) {
+ // We can stop doing base64 encoding once our serialization into JSON
+ // is guaranteed to handle all chars in strings, including embedded
+ // nulls.
+ entry.postdata_b64 = btoa(postdata);
+ }
+ }
+ }
+ catch (ex) { debug(ex); } // POSTDATA is tricky - especially since some extensions don't get it right
+
+ if (aEntry.triggeringPrincipal) {
+ // Not catching anything specific here, just possible errors
+ // from writeCompoundObject and the like.
+ try {
+ var binaryStream = Cc["@mozilla.org/binaryoutputstream;1"].
+ createInstance(Ci.nsIObjectOutputStream);
+ var pipe = Cc["@mozilla.org/pipe;1"].createInstance(Ci.nsIPipe);
+ pipe.init(false, false, 0, 0xffffffff, null);
+ binaryStream.setOutputStream(pipe.outputStream);
+ binaryStream.writeCompoundObject(aEntry.triggeringPrincipal, Ci.nsIPrincipal, true);
+ binaryStream.close();
+
+ // Now we want to read the data from the pipe's input end and encode it.
+ var scriptableStream = Cc["@mozilla.org/binaryinputstream;1"].
+ createInstance(Ci.nsIBinaryInputStream);
+ scriptableStream.setInputStream(pipe.inputStream);
+ var triggeringPrincipalBytes =
+ scriptableStream.readByteArray(scriptableStream.available());
+ // We can stop doing base64 encoding once our serialization into JSON
+ // is guaranteed to handle all chars in strings, including embedded
+ // nulls.
+ entry.triggeringPrincipal_b64 = btoa(String.fromCharCode.apply(null, triggeringPrincipalBytes));
+ }
+ catch (ex) { debug(ex); }
+ }
+
+ entry.docIdentifier = aEntry.BFCacheEntry.ID;
+
+ if (aEntry.stateData != null) {
+ entry.structuredCloneState = aEntry.stateData.getDataAsBase64();
+ entry.structuredCloneVersion = aEntry.stateData.formatVersion;
+ }
+
+ if (!(aEntry instanceof Ci.nsISHContainer)) {
+ return entry;
+ }
+
+ if (aEntry.childCount > 0) {
+ let children = [];
+ for (var i = 0; i < aEntry.childCount; i++) {
+ var child = aEntry.GetChildAt(i);
+
+ if (child) {
+ // don't try to restore framesets containing wyciwyg URLs (cf. bug 424689 and bug 450595)
+ if (child.URI.schemeIs("wyciwyg")) {
+ children = [];
+ break;
+ }
+
+ children.push(this._serializeHistoryEntry(child, aFullData,
+ aIsPinned, aHostSchemeData));
+ }
+ }
+
+ if (children.length)
+ entry.children = children;
+ }
+
+ return entry;
+ },
+
+ /**
+ * go through all tabs and store the current scroll positions
+ * and innerHTML content of WYSIWYG editors
+ * @param aWindow
+ * Window reference
+ */
+ _updateTextAndScrollData: function(aWindow) {
+ var browsers = aWindow.gBrowser.browsers;
+ this._windows[aWindow.__SSi].tabs.forEach(function(tabData, i) {
+ try {
+ this._updateTextAndScrollDataForTab(aWindow, browsers[i], tabData);
+ }
+ catch (ex) { debug(ex); } // get as much data as possible, ignore failures (might succeed the next time)
+ }, this);
+ },
+
+ /**
+ * go through all frames and store the current scroll positions
+ * and innerHTML content of WYSIWYG editors
+ * @param aWindow
+ * Window reference
+ * @param aBrowser
+ * single browser reference
+ * @param aTabData
+ * tabData object to add the information to
+ * @param aFullData
+ * always return privacy sensitive data (use with care)
+ */
+ _updateTextAndScrollDataForTab:
+ function(aWindow, aBrowser, aTabData, aFullData) {
+ // we shouldn't update data for incompletely initialized tabs
+ if (aBrowser.__SS_data && aBrowser.__SS_tabStillLoading)
+ return;
+
+ var tabIndex = (aTabData.index || aTabData.entries.length) - 1;
+ // entry data needn't exist for tabs just initialized with an incomplete session state
+ if (!aTabData.entries[tabIndex])
+ return;
+
+ let selectedPageStyle = aBrowser.markupDocumentViewer.authorStyleDisabled ? "_nostyle" :
+ this._getSelectedPageStyle(aBrowser.contentWindow);
+ if (selectedPageStyle)
+ aTabData.pageStyle = selectedPageStyle;
+ else if (aTabData.pageStyle)
+ delete aTabData.pageStyle;
+
+ this._updateTextAndScrollDataForFrame(aWindow, aBrowser.contentWindow,
+ aTabData.entries[tabIndex],
+ !aBrowser.__SS_formDataSaved, aFullData,
+ !!aTabData.pinned);
+ aBrowser.__SS_formDataSaved = true;
+ if (aBrowser.currentURI.spec == "about:config")
+ aTabData.entries[tabIndex].formdata = {
+ id: {
+ "textbox": aBrowser.contentDocument.getElementById("textbox").value
+ },
+ xpath: {}
+ };
+ },
+
+ /**
+ * go through all subframes and store all form data, the current
+ * scroll positions and innerHTML content of WYSIWYG editors
+ * @param aWindow
+ * Window reference
+ * @param aContent
+ * frame reference
+ * @param aData
+ * part of a tabData object to add the information to
+ * @param aUpdateFormData
+ * update all form data for this tab
+ * @param aFullData
+ * always return privacy sensitive data (use with care)
+ * @param aIsPinned
+ * the tab is pinned and should be treated differently for privacy
+ */
+ _updateTextAndScrollDataForFrame:
+ function(aWindow, aContent, aData,
+ aUpdateFormData, aFullData, aIsPinned) {
+ for (var i = 0; i < aContent.frames.length; i++) {
+ if (aData.children && aData.children[i])
+ this._updateTextAndScrollDataForFrame(aWindow, aContent.frames[i],
+ aData.children[i], aUpdateFormData,
+ aFullData, aIsPinned);
+ }
+ var isHTTPS = this._getURIFromString((aContent.parent || aContent).
+ document.location.href).schemeIs("https");
+ let isAboutSR = aContent.top.document.location.href == "about:sessionrestore";
+ if (aFullData || this.checkPrivacyLevel(isHTTPS, aIsPinned) || isAboutSR) {
+ if (aFullData || aUpdateFormData) {
+ let formData = DocumentUtils.getFormData(aContent.document);
+
+ // We want to avoid saving data for about:sessionrestore as a string.
+ // Since it's stored in the form as stringified JSON, stringifying further
+ // causes an explosion of escape characters. cf. bug 467409
+ if (formData && isAboutSR) {
+ formData.id["sessionData"] = JSON.parse(formData.id["sessionData"]);
+ }
+
+ if (Object.keys(formData.id).length ||
+ Object.keys(formData.xpath).length) {
+ aData.formdata = formData;
+ } else if (aData.formdata) {
+ delete aData.formdata;
+ }
+ }
+
+ // designMode is undefined e.g. for XUL documents (as about:config)
+ if ((aContent.document.designMode || "") == "on" && aContent.document.body)
+ aData.innerHTML = aContent.document.body.innerHTML;
+ }
+
+ // get scroll position from nsIDOMWindowUtils, since it allows avoiding a
+ // flush of layout
+ let domWindowUtils = aContent.QueryInterface(Ci.nsIInterfaceRequestor)
+ .getInterface(Ci.nsIDOMWindowUtils);
+ let scrollX = {}, scrollY = {};
+ domWindowUtils.getScrollXY(false, scrollX, scrollY);
+ aData.scroll = scrollX.value + "," + scrollY.value;
+ },
+
+ /**
+ * determine the title of the currently enabled style sheet (if any)
+ * and recurse through the frameset if necessary
+ * @param aContent is a frame reference
+ * @returns the title style sheet determined to be enabled (empty string if none)
+ */
+ _getSelectedPageStyle: function(aContent) {
+ const forScreen = /(?:^|,)\s*(?:all|screen)\s*(?:,|$)/i;
+ for (let i = 0; i < aContent.document.styleSheets.length; i++) {
+ let ss = aContent.document.styleSheets[i];
+ let media = ss.media.mediaText;
+ if (!ss.disabled && ss.title && (!media || forScreen.test(media)))
+ return ss.title
+ }
+ for (let i = 0; i < aContent.frames.length; i++) {
+ let selectedPageStyle = this._getSelectedPageStyle(aContent.frames[i]);
+ if (selectedPageStyle)
+ return selectedPageStyle;
+ }
+ return "";
+ },
+
+ /**
+ * extract the base domain from a history entry and its children
+ * @param aEntry
+ * the history entry, serialized
+ * @param aHosts
+ * the hash that will be used to store hosts eg, { hostname: true }
+ * @param aCheckPrivacy
+ * should we check the privacy level for https
+ * @param aIsPinned
+ * is the entry we're evaluating for a pinned tab; used only if
+ * aCheckPrivacy
+ */
+ _extractHostsForCookiesFromEntry:
+ function(aEntry, aHosts, aCheckPrivacy, aIsPinned) {
+
+ let host = aEntry._host,
+ scheme = aEntry._scheme;
+
+ // If host & scheme aren't defined, then we are likely here in the startup
+ // process via _splitCookiesFromWindow. In that case, we'll turn aEntry.url
+ // into an nsIURI and get host/scheme from that. This will throw for about:
+ // urls in which case we don't need to do anything.
+ if (!host && !scheme) {
+ try {
+ let uri = this._getURIFromString(aEntry.url);
+ host = uri.host;
+ scheme = uri.scheme;
+ this._extractHostsForCookiesFromHostScheme(host, scheme, aHosts, aCheckPrivacy, aIsPinned);
+ }
+ catch(ex) { }
+ }
+
+ if (aEntry.children) {
+ aEntry.children.forEach(function(entry) {
+ this._extractHostsForCookiesFromEntry(entry, aHosts, aCheckPrivacy, aIsPinned);
+ }, this);
+ }
+ },
+
+ /**
+ * extract the base domain from a host & scheme
+ * @param aHost
+ * the host of a uri (usually via nsIURI.host)
+ * @param aScheme
+ * the scheme of a uri (usually via nsIURI.scheme)
+ * @param aHosts
+ * the hash that will be used to store hosts eg, { hostname: true }
+ * @param aCheckPrivacy
+ * should we check the privacy level for https
+ * @param aIsPinned
+ * is the entry we're evaluating for a pinned tab; used only if
+ * aCheckPrivacy
+ */
+ _extractHostsForCookiesFromHostScheme:
+ function(aHost, aScheme, aHosts, aCheckPrivacy, aIsPinned) {
+ // host and scheme may not be set (for about: urls for example), in which
+ // case testing scheme will be sufficient.
+ if (/https?/.test(aScheme) && !aHosts[aHost] &&
+ (!aCheckPrivacy ||
+ this.checkPrivacyLevel(aScheme == "https", aIsPinned))) {
+ // By setting this to true or false, we can determine when looking at
+ // the host in _updateCookies if we should check for privacy.
+ aHosts[aHost] = aIsPinned;
+ }
+ else if (aScheme == "file") {
+ aHosts[aHost] = true;
+ }
+ },
+
+ /**
+ * store all hosts for a URL
+ * @param aWindow
+ * Window reference
+ */
+ _updateCookieHosts: function(aWindow) {
+ var hosts = this._internalWindows[aWindow.__SSi].hosts = {};
+
+ // Since _updateCookiesHosts is only ever called for open windows during a
+ // session, we can call into _extractHostsForCookiesFromHostScheme directly
+ // using data that is attached to each browser.
+ for (let i = 0; i < aWindow.gBrowser.tabs.length; i++) {
+ let tab = aWindow.gBrowser.tabs[i];
+ let hostSchemeData = tab.linkedBrowser.__SS_hostSchemeData || [];
+ for (let j = 0; j < hostSchemeData.length; j++) {
+ this._extractHostsForCookiesFromHostScheme(hostSchemeData[j].host,
+ hostSchemeData[j].scheme,
+ hosts, true, tab.pinned);
+ }
+ }
+ },
+
+ /**
+ * Serialize cookie data
+ * @param aWindows
+ * JS object containing window data references
+ * { id: winData, etc. }
+ */
+ _updateCookies: function(aWindows) {
+ function addCookieToHash(aHash, aHost, aPath, aName, aCookie) {
+ // lazily build up a 3-dimensional hash, with
+ // aHost, aPath, and aName as keys
+ if (!aHash[aHost])
+ aHash[aHost] = {};
+ if (!aHash[aHost][aPath])
+ aHash[aHost][aPath] = {};
+ aHash[aHost][aPath][aName] = aCookie;
+ }
+
+ var jscookies = {};
+ var _this = this;
+ // MAX_EXPIRY should be 2^63-1, but JavaScript can't handle that precision
+ var MAX_EXPIRY = Math.pow(2, 62);
+
+ for (let [id, window] in Iterator(aWindows)) {
+ window.cookies = [];
+ let internalWindow = this._internalWindows[id];
+ if (!internalWindow.hosts)
+ return;
+ for (var [host, isPinned] in Iterator(internalWindow.hosts)) {
+ let list;
+ try {
+ list = Services.cookies.getCookiesFromHost(host, {});
+ }
+ catch (ex) {
+ debug("getCookiesFromHost failed. Host: " + host);
+ }
+ while (list && list.hasMoreElements()) {
+ var cookie = list.getNext().QueryInterface(Ci.nsICookie2);
+ // window._hosts will only have hosts with the right privacy rules,
+ // so there is no need to do anything special with this call to
+ // checkPrivacyLevel.
+ if (cookie.isSession && _this.checkPrivacyLevel(cookie.isSecure, isPinned)) {
+ // use the cookie's host, path, and name as keys into a hash,
+ // to make sure we serialize each cookie only once
+ if (!(cookie.host in jscookies &&
+ cookie.path in jscookies[cookie.host] &&
+ cookie.name in jscookies[cookie.host][cookie.path])) {
+ var jscookie = { "host": cookie.host, "value": cookie.value };
+ // only add attributes with non-default values (saving a few bits)
+ if (cookie.path) jscookie.path = cookie.path;
+ if (cookie.name) jscookie.name = cookie.name;
+ if (cookie.isSecure) jscookie.secure = true;
+ if (cookie.isHttpOnly) jscookie.httponly = true;
+ if (cookie.expiry < MAX_EXPIRY) jscookie.expiry = cookie.expiry;
+
+ addCookieToHash(jscookies, cookie.host, cookie.path, cookie.name, jscookie);
+ }
+ window.cookies.push(jscookies[cookie.host][cookie.path][cookie.name]);
+ }
+ }
+ }
+
+ // don't include empty cookie sections
+ if (!window.cookies.length)
+ delete window.cookies;
+ }
+ },
+
+ /**
+ * Store window dimensions, visibility, sidebar
+ * @param aWindow
+ * Window reference
+ */
+ _updateWindowFeatures: function(aWindow) {
+ var winData = this._windows[aWindow.__SSi];
+
+ WINDOW_ATTRIBUTES.forEach(function(aAttr) {
+ winData[aAttr] = this._getWindowDimension(aWindow, aAttr);
+ }, this);
+
+ var hidden = WINDOW_HIDEABLE_FEATURES.filter(function(aItem) {
+ return aWindow[aItem] && !aWindow[aItem].visible;
+ });
+ if (hidden.length != 0)
+ winData.hidden = hidden.join(",");
+ else if (winData.hidden)
+ delete winData.hidden;
+
+ var sidebar = aWindow.document.getElementById("sidebar-box").getAttribute("sidebarcommand");
+ if (sidebar)
+ winData.sidebar = sidebar;
+ else if (winData.sidebar)
+ delete winData.sidebar;
+ },
+
+ /**
+ * gather session data as object
+ * @param aUpdateAll
+ * Bool update all windows
+ * @param aPinnedOnly
+ * Bool collect pinned tabs only
+ * @returns object
+ */
+ _getCurrentState: function(aUpdateAll, aPinnedOnly) {
+ this._handleClosedWindows();
+
+ var activeWindow = this._getMostRecentBrowserWindow();
+
+ if (this._loadState == STATE_RUNNING) {
+ // update the data for all windows with activities since the last save operation
+ this._forEachBrowserWindow(function(aWindow) {
+ if (!this._isWindowLoaded(aWindow)) // window data is still in _statesToRestore
+ return;
+ if (aUpdateAll || this._dirtyWindows[aWindow.__SSi] || aWindow == activeWindow) {
+ this._collectWindowData(aWindow);
+ }
+ else { // always update the window features (whose change alone never triggers a save operation)
+ this._updateWindowFeatures(aWindow);
+ }
+ });
+ this._dirtyWindows = [];
+ }
+
+ // collect the data for all windows
+ var total = [], windows = {}, ids = [];
+ var nonPopupCount = 0;
+ var ix;
+ for (ix in this._windows) {
+ if (this._windows[ix]._restoring) // window data is still in _statesToRestore
+ continue;
+ total.push(this._windows[ix]);
+ ids.push(ix);
+ windows[ix] = this._windows[ix];
+ if (!this._windows[ix].isPopup)
+ nonPopupCount++;
+ }
+ this._updateCookies(windows);
+
+ // collect the data for all windows yet to be restored
+ for (ix in this._statesToRestore) {
+ for each (let winData in this._statesToRestore[ix].windows) {
+ total.push(winData);
+ if (!winData.isPopup)
+ nonPopupCount++;
+ }
+ }
+
+ // shallow copy this._closedWindows to preserve current state
+ let lastClosedWindowsCopy = this._closedWindows.slice();
+
+ // If no non-popup browser window remains open, return the state of the last
+ // closed window(s). We only want to do this when we're actually "ending"
+ // the session.
+ //XXXzpao We should do this for _restoreLastWindow == true, but that has
+ // its own check for popups. c.f. bug 597619
+ if (nonPopupCount == 0 && lastClosedWindowsCopy.length > 0 &&
+ this._loadState == STATE_QUITTING) {
+ // prepend the last non-popup browser window, so that if the user loads more tabs
+ // at startup we don't accidentally add them to a popup window
+ do {
+ total.unshift(lastClosedWindowsCopy.shift())
+ } while (total[0].isPopup && lastClosedWindowsCopy.length > 0)
+ }
+
+ if (aPinnedOnly) {
+ // perform a deep copy so that existing session variables are not changed.
+ total = JSON.parse(this._toJSONString(total));
+ total = total.filter(function(win) {
+ win.tabs = win.tabs.filter(function(tab) tab.pinned);
+ // remove closed tabs
+ win._closedTabs = [];
+ // correct selected tab index if it was stripped out
+ if (win.selected > win.tabs.length)
+ win.selected = 1;
+ return win.tabs.length > 0;
+ });
+ if (total.length == 0)
+ return null;
+
+ lastClosedWindowsCopy = [];
+ }
+
+ if (activeWindow) {
+ this.activeWindowSSiCache = activeWindow.__SSi || "";
+ }
+ ix = ids.indexOf(this.activeWindowSSiCache);
+ // We don't want to restore focus to a minimized window or a window which had all its
+ // tabs stripped out (doesn't exist).
+ if (ix != -1 && total[ix] && total[ix].sizemode == "minimized")
+ ix = -1;
+
+ let session = {
+ state: this._loadState == STATE_RUNNING ? STATE_RUNNING_STR : STATE_STOPPED_STR,
+ lastUpdate: Date.now(),
+ startTime: this._sessionStartTime,
+ recentCrashes: this._recentCrashes
+ };
+
+ var scratchpads = null;
+ var browserConsole = null;
+#ifdef MOZ_DEVTOOLS
+ // Scratchpad
+ // get open Scratchpad window states too
+ scratchpads = ScratchpadManager.getSessionState();
+
+ // The Browser Console
+ browserConsole = HUDService.getBrowserConsoleSessionState();
+#endif
+
+ return {
+ windows: total,
+ selectedWindow: ix + 1,
+ _closedWindows: lastClosedWindowsCopy,
+#ifdef MOZ_DEVTOOLS
+ session: session,
+ scratchpads: scratchpads,
+ browserConsole: browserConsole
+#else
+ session: session
+#endif
+ };
+ },
+
+ /**
+ * serialize session data for a window
+ * @param aWindow
+ * Window reference
+ * @returns string
+ */
+ _getWindowState: function(aWindow) {
+ if (!this._isWindowLoaded(aWindow))
+ return this._statesToRestore[aWindow.__SS_restoreID];
+
+ if (this._loadState == STATE_RUNNING) {
+ this._collectWindowData(aWindow);
+ }
+
+ var winData = this._windows[aWindow.__SSi];
+ let windows = {};
+ windows[aWindow.__SSi] = winData;
+ this._updateCookies(windows);
+
+ return { windows: [winData] };
+ },
+
+ _collectWindowData: function(aWindow) {
+ if (!this._isWindowLoaded(aWindow))
+ return;
+
+ // update the internal state data for this window
+ this._saveWindowHistory(aWindow);
+ this._updateTextAndScrollData(aWindow);
+ this._updateCookieHosts(aWindow);
+ this._updateWindowFeatures(aWindow);
+
+ // Make sure we keep __SS_lastSessionWindowID around for cases like entering
+ // or leaving PB mode.
+ if (aWindow.__SS_lastSessionWindowID)
+ this._windows[aWindow.__SSi].__lastSessionWindowID =
+ aWindow.__SS_lastSessionWindowID;
+
+ this._dirtyWindows[aWindow.__SSi] = false;
+ },
+
+ /* ........ Restoring Functionality .............. */
+
+ /**
+ * restore features to a single window
+ * @param aWindow
+ * Window reference
+ * @param aState
+ * JS object or its eval'able source
+ * @param aOverwriteTabs
+ * bool overwrite existing tabs w/ new ones
+ * @param aFollowUp
+ * bool this isn't the restoration of the first window
+ */
+ restoreWindow: function(aWindow, aState, aOverwriteTabs, aFollowUp) {
+ if (!aFollowUp) {
+ this.windowToFocus = aWindow;
+ }
+ // initialize window if necessary
+ if (aWindow && (!aWindow.__SSi || !this._windows[aWindow.__SSi]))
+ this.onLoad(aWindow);
+
+ try {
+ var root = typeof aState == "string" ? JSON.parse(aState) : aState;
+ if (!root.windows[0]) {
+ this._sendRestoreCompletedNotifications();
+ return; // nothing to restore
+ }
+ }
+ catch (ex) { // invalid state object - don't restore anything
+ debug(ex);
+ this._sendRestoreCompletedNotifications();
+ return;
+ }
+
+ // We're not returning from this before we end up calling restoreHistoryPrecursor
+ // for this window, so make sure we send the SSWindowStateBusy event.
+ this._setWindowStateBusy(aWindow);
+
+ if (root._closedWindows)
+ this._closedWindows = root._closedWindows;
+
+ var winData;
+ if (!root.selectedWindow || root.selectedWindow > root.windows.length) {
+ root.selectedWindow = 0;
+ }
+
+ // open new windows for all further window entries of a multi-window session
+ // (unless they don't contain any tab data)
+ for (var w = 1; w < root.windows.length; w++) {
+ winData = root.windows[w];
+ if (winData && winData.tabs && winData.tabs[0]) {
+ var window = this._openWindowWithState({ windows: [winData] });
+ if (w == root.selectedWindow - 1) {
+ this.windowToFocus = window;
+ }
+ }
+ }
+ winData = root.windows[0];
+ if (!winData.tabs) {
+ winData.tabs = [];
+ }
+ // don't restore a single blank tab when we've had an external
+ // URL passed in for loading at startup (cf. bug 357419)
+ else if (root._firstTabs && !aOverwriteTabs && winData.tabs.length == 1 &&
+ (!winData.tabs[0].entries || winData.tabs[0].entries.length == 0)) {
+ winData.tabs = [];
+ }
+
+ var tabbrowser = aWindow.gBrowser;
+ var openTabCount = aOverwriteTabs ? tabbrowser.browsers.length : -1;
+ var newTabCount = winData.tabs.length;
+ var tabs = [];
+
+ // disable smooth scrolling while adding, moving, removing and selecting tabs
+ var tabstrip = tabbrowser.tabContainer.mTabstrip;
+ var smoothScroll = tabstrip.smoothScroll;
+ tabstrip.smoothScroll = false;
+
+ // unpin all tabs to ensure they are not reordered in the next loop
+ if (aOverwriteTabs) {
+ for (let t = tabbrowser._numPinnedTabs - 1; t > -1; t--)
+ tabbrowser.unpinTab(tabbrowser.tabs[t]);
+ }
+
+ // make sure that the selected tab won't be closed in order to
+ // prevent unnecessary flickering
+ if (aOverwriteTabs && tabbrowser.selectedTab._tPos >= newTabCount)
+ tabbrowser.moveTabTo(tabbrowser.selectedTab, newTabCount - 1);
+
+ let numVisibleTabs = 0;
+
+ for (var t = 0; t < newTabCount; t++) {
+ tabs.push(t < openTabCount ?
+ tabbrowser.tabs[t] :
+ tabbrowser.addTab("about:blank",
+ {skipAnimation: true,
+ skipBackgroundNotify: true}));
+ // when resuming at startup: add additionally requested pages to the end
+ if (!aOverwriteTabs && root._firstTabs) {
+ tabbrowser.moveTabTo(tabs[t], t);
+ }
+
+ if (winData.tabs[t].pinned)
+ tabbrowser.pinTab(tabs[t]);
+
+ if (winData.tabs[t].hidden) {
+ tabbrowser.hideTab(tabs[t]);
+ }
+ else {
+ tabbrowser.showTab(tabs[t]);
+ numVisibleTabs++;
+ }
+ }
+
+ // if all tabs to be restored are hidden, make the first one visible
+ if (!numVisibleTabs && winData.tabs.length) {
+ winData.tabs[0].hidden = false;
+ tabbrowser.showTab(tabs[0]);
+ }
+
+ // If overwriting tabs, we want to reset each tab's "restoring" state. Since
+ // we're overwriting those tabs, they should no longer be restoring. The
+ // tabs will be rebuilt and marked if they need to be restored after loading
+ // state (in restoreHistoryPrecursor).
+ if (aOverwriteTabs) {
+ for (let i = 0; i < tabbrowser.tabs.length; i++) {
+ if (tabbrowser.browsers[i].__SS_restoreState)
+ this._resetTabRestoringState(tabbrowser.tabs[i]);
+ }
+ }
+
+ // We want to set up a counter on the window that indicates how many tabs
+ // in this window are unrestored. This will be used in restoreNextTab to
+ // determine if gRestoreTabsProgressListener should be removed from the window.
+ // If we aren't overwriting existing tabs, then we want to add to the existing
+ // count in case there are still tabs restoring.
+ if (!aWindow.__SS_tabsToRestore)
+ aWindow.__SS_tabsToRestore = 0;
+ if (aOverwriteTabs)
+ aWindow.__SS_tabsToRestore = newTabCount;
+ else
+ aWindow.__SS_tabsToRestore += newTabCount;
+
+ // We want to correlate the window with data from the last session, so
+ // assign another id if we have one. Otherwise clear so we don't do
+ // anything with it.
+ delete aWindow.__SS_lastSessionWindowID;
+ if (winData.__lastSessionWindowID)
+ aWindow.__SS_lastSessionWindowID = winData.__lastSessionWindowID;
+
+ // when overwriting tabs, remove all superflous ones
+ if (aOverwriteTabs && newTabCount < openTabCount) {
+ Array.slice(tabbrowser.tabs, newTabCount, openTabCount)
+ .forEach(tabbrowser.removeTab, tabbrowser);
+ }
+
+ if (aOverwriteTabs) {
+ this.restoreWindowFeatures(aWindow, winData);
+ delete this._windows[aWindow.__SSi].extData;
+ }
+ if (winData.cookies) {
+ this.restoreCookies(winData.cookies);
+ }
+ if (winData.extData) {
+ if (!this._windows[aWindow.__SSi].extData) {
+ this._windows[aWindow.__SSi].extData = {};
+ }
+ for (var key in winData.extData) {
+ this._windows[aWindow.__SSi].extData[key] = winData.extData[key];
+ }
+ }
+ if (aOverwriteTabs || root._firstTabs) {
+ this._windows[aWindow.__SSi]._closedTabs = winData._closedTabs || [];
+ }
+
+ this.restoreHistoryPrecursor(aWindow, tabs, winData.tabs,
+ (aOverwriteTabs ? (parseInt(winData.selected) || 1) : 0), 0, 0);
+
+#ifdef MOZ_DEVTOOLS
+ if (aState.scratchpads) {
+ ScratchpadManager.restoreSession(aState.scratchpads);
+ }
+
+ // The Browser Console
+ if (aState.browserConsole) {
+ HUDService.restoreBrowserConsoleSession();
+ }
+
+#endif
+ // set smoothScroll back to the original value
+ tabstrip.smoothScroll = smoothScroll;
+
+ this._sendRestoreCompletedNotifications();
+ },
+
+ /**
+ * Sets the tabs restoring order with the following priority:
+ * Selected tab, pinned tabs, optimized visible tabs, other visible tabs and
+ * hidden tabs.
+ * @param aTabBrowser
+ * Tab browser object
+ * @param aTabs
+ * Array of tab references
+ * @param aTabData
+ * Array of tab data
+ * @param aSelectedTab
+ * Index of selected tab (1 is first tab, 0 no selected tab)
+ */
+ _setTabsRestoringOrder : function(
+ aTabBrowser, aTabs, aTabData, aSelectedTab) {
+
+ // Store the selected tab. Need to substract one to get the index in aTabs.
+ let selectedTab;
+ if (aSelectedTab > 0 && aTabs[aSelectedTab - 1]) {
+ selectedTab = aTabs[aSelectedTab - 1];
+ }
+
+ // Store the pinned tabs and hidden tabs.
+ let pinnedTabs = [];
+ let pinnedTabsData = [];
+ let hiddenTabs = [];
+ let hiddenTabsData = [];
+ if (aTabs.length > 1) {
+ for (let t = aTabs.length - 1; t >= 0; t--) {
+ if (aTabData[t].pinned) {
+ pinnedTabs.unshift(aTabs.splice(t, 1)[0]);
+ pinnedTabsData.unshift(aTabData.splice(t, 1)[0]);
+ } else if (aTabData[t].hidden) {
+ hiddenTabs.unshift(aTabs.splice(t, 1)[0]);
+ hiddenTabsData.unshift(aTabData.splice(t, 1)[0]);
+ }
+ }
+ }
+
+ // Optimize the visible tabs only if there is a selected tab.
+ if (selectedTab) {
+ let selectedTabIndex = aTabs.indexOf(selectedTab);
+ if (selectedTabIndex > 0) {
+ let scrollSize = aTabBrowser.tabContainer.mTabstrip.scrollClientSize;
+ let tabWidth = aTabs[0].getBoundingClientRect().width;
+ let maxVisibleTabs = Math.ceil(scrollSize / tabWidth);
+ if (maxVisibleTabs < aTabs.length) {
+ let firstVisibleTab = 0;
+ let nonVisibleTabsCount = aTabs.length - maxVisibleTabs;
+ if (nonVisibleTabsCount >= selectedTabIndex) {
+ // Selected tab is leftmost since we scroll to it when possible.
+ firstVisibleTab = selectedTabIndex;
+ } else {
+ // Selected tab is rightmost or no more room to scroll right.
+ firstVisibleTab = nonVisibleTabsCount;
+ }
+ aTabs = aTabs.splice(firstVisibleTab, maxVisibleTabs).concat(aTabs);
+ aTabData =
+ aTabData.splice(firstVisibleTab, maxVisibleTabs).concat(aTabData);
+ }
+ }
+ }
+
+ // Merge the stored tabs in order.
+ aTabs = pinnedTabs.concat(aTabs, hiddenTabs);
+ aTabData = pinnedTabsData.concat(aTabData, hiddenTabsData);
+
+ // Load the selected tab to the first position and select it.
+ if (selectedTab) {
+ let selectedTabIndex = aTabs.indexOf(selectedTab);
+ if (selectedTabIndex > 0) {
+ aTabs = aTabs.splice(selectedTabIndex, 1).concat(aTabs);
+ aTabData = aTabData.splice(selectedTabIndex, 1).concat(aTabData);
+ }
+ aTabBrowser.selectedTab = selectedTab;
+ }
+
+ return [aTabs, aTabData];
+ },
+
+ /**
+ * Manage history restoration for a window
+ * @param aWindow
+ * Window to restore the tabs into
+ * @param aTabs
+ * Array of tab references
+ * @param aTabData
+ * Array of tab data
+ * @param aSelectTab
+ * Index of selected tab
+ * @param aIx
+ * Index of the next tab to check readyness for
+ * @param aCount
+ * Counter for number of times delaying b/c browser or history aren't ready
+ * @param aRestoreImmediately
+ * Flag to indicate whether the given set of tabs aTabs should be
+ * restored/loaded immediately even if restore_on_demand = true
+ */
+ restoreHistoryPrecursor:
+ function(aWindow, aTabs, aTabData, aSelectTab,
+ aIx, aCount, aRestoreImmediately = false) {
+ var tabbrowser = aWindow.gBrowser;
+
+ // make sure that all browsers and their histories are available
+ // - if one's not, resume this check in 100ms (repeat at most 10 times)
+ for (var t = aIx; t < aTabs.length; t++) {
+ try {
+ if (!tabbrowser.getBrowserForTab(aTabs[t]).webNavigation.sessionHistory) {
+ throw new Error();
+ }
+ }
+ catch (ex) { // in case browser or history aren't ready yet
+ if (aCount < 10) {
+ var restoreHistoryFunc = function(self) {
+ self.restoreHistoryPrecursor(aWindow, aTabs, aTabData, aSelectTab,
+ aIx, aCount + 1, aRestoreImmediately);
+ }
+ aWindow.setTimeout(restoreHistoryFunc, 100, this);
+ return;
+ }
+ }
+ }
+
+ if (!this._isWindowLoaded(aWindow)) {
+ // from now on, the data will come from the actual window
+ delete this._statesToRestore[aWindow.__SS_restoreID];
+ delete aWindow.__SS_restoreID;
+ delete this._windows[aWindow.__SSi]._restoring;
+
+ // It's important to set the window state to dirty so that
+ // we collect their data for the first time when saving state.
+ this._dirtyWindows[aWindow.__SSi] = true;
+ }
+
+ if (aTabs.length == 0) {
+ // this is normally done in restoreHistory() but as we're returning early
+ // here we need to take care of it.
+ this._setWindowStateReady(aWindow);
+ return;
+ }
+
+ // Sets the tabs restoring order.
+ [aTabs, aTabData] =
+ this._setTabsRestoringOrder(tabbrowser, aTabs, aTabData, aSelectTab);
+
+ // Prepare the tabs so that they can be properly restored. We'll pin/unpin
+ // and show/hide tabs as necessary. We'll also set the labels, user typed
+ // value, and attach a copy of the tab's data in case we close it before
+ // it's been restored.
+ for (t = 0; t < aTabs.length; t++) {
+ let tab = aTabs[t];
+ let browser = tabbrowser.getBrowserForTab(tab);
+ let tabData = aTabData[t];
+
+ if (tabData.pinned)
+ tabbrowser.pinTab(tab);
+ else
+ tabbrowser.unpinTab(tab);
+
+ if (tabData.hidden)
+ tabbrowser.hideTab(tab);
+ else
+ tabbrowser.showTab(tab);
+
+ if ("attributes" in tabData) {
+ // Ensure that we persist tab attributes restored from previous sessions.
+ Object.keys(tabData.attributes).forEach(a => TabAttributes.persist(a));
+ }
+
+ browser.__SS_tabStillLoading = true;
+
+ // keep the data around to prevent dataloss in case
+ // a tab gets closed before it's been properly restored
+ browser.__SS_data = tabData;
+ browser.__SS_restoreState = TAB_STATE_NEEDS_RESTORE;
+ browser.setAttribute("pending", "true");
+ tab.setAttribute("pending", "true");
+
+ // Make sure that set/getTabValue will set/read the correct data by
+ // wiping out any current value in tab.__SS_extdata.
+ delete tab.__SS_extdata;
+
+ if (!tabData.entries || tabData.entries.length == 0) {
+ // make sure to blank out this tab's content
+ // (just purging the tab's history won't be enough)
+ browser.contentDocument.location = "about:blank";
+ continue;
+ }
+
+ browser.stop(); // in case about:blank isn't done yet
+
+ // wall-paper fix for bug 439675: make sure that the URL to be loaded
+ // is always visible in the address bar
+ let activeIndex = (tabData.index || tabData.entries.length) - 1;
+ let activePageData = tabData.entries[activeIndex] || null;
+ let uri = activePageData ? activePageData.url || null : null;
+ browser.userTypedValue = uri;
+
+ // Also make sure currentURI is set so that switch-to-tab works before
+ // the tab is restored. We'll reset this to about:blank when we try to
+ // restore the tab to ensure that docshell doeesn't get confused.
+ if (uri)
+ browser.docShell.setCurrentURI(this._getURIFromString(uri));
+
+ // If the page has a title, set it.
+ if (activePageData) {
+ if (activePageData.title) {
+ tab.label = activePageData.title;
+ tab.crop = "end";
+ } else if (activePageData.url != "about:blank") {
+ tab.label = activePageData.url;
+ tab.crop = "center";
+ }
+ }
+ }
+
+ // helper hashes for ensuring unique frame IDs and unique document
+ // identifiers.
+ var idMap = { used: {} };
+ var docIdentMap = {};
+ this.restoreHistory(aWindow, aTabs, aTabData, idMap, docIdentMap,
+ aRestoreImmediately);
+ },
+
+ /**
+ * Restore history for a window
+ * @param aWindow
+ * Window reference
+ * @param aTabs
+ * Array of tab references
+ * @param aTabData
+ * Array of tab data
+ * @param aIdMap
+ * Hash for ensuring unique frame IDs
+ * @param aRestoreImmediately
+ * Flag to indicate whether the given set of tabs aTabs should be
+ * restored/loaded immediately even if restore_on_demand = true
+ */
+ restoreHistory:
+ function(aWindow, aTabs, aTabData, aIdMap, aDocIdentMap,
+ aRestoreImmediately) {
+ var _this = this;
+ // if the tab got removed before being completely restored, then skip it
+ while (aTabs.length > 0 && !(this._canRestoreTabHistory(aTabs[0]))) {
+ aTabs.shift();
+ aTabData.shift();
+ }
+ if (aTabs.length == 0) {
+ // At this point we're essentially ready for consumers to read/write data
+ // via the sessionstore API so we'll send the SSWindowStateReady event.
+ this._setWindowStateReady(aWindow);
+ return; // no more tabs to restore
+ }
+
+ var tab = aTabs.shift();
+ var tabData = aTabData.shift();
+
+ var browser = aWindow.gBrowser.getBrowserForTab(tab);
+ var history = browser.webNavigation.sessionHistory;
+
+ if (history.count > 0) {
+ history.PurgeHistory(history.count);
+ }
+ history.QueryInterface(Ci.nsISHistoryInternal);
+
+ browser.__SS_shistoryListener = new SessionStoreSHistoryListener(tab);
+ history.addSHistoryListener(browser.__SS_shistoryListener);
+
+ if (!tabData.entries) {
+ tabData.entries = [];
+ }
+ if (tabData.extData) {
+ tab.__SS_extdata = {};
+ for (let key in tabData.extData)
+ tab.__SS_extdata[key] = tabData.extData[key];
+ }
+ else
+ delete tab.__SS_extdata;
+
+ for (var i = 0; i < tabData.entries.length; i++) {
+ //XXXzpao Wallpaper patch for bug 514751
+ if (!tabData.entries[i].url)
+ continue;
+ history.addEntry(this._deserializeHistoryEntry(tabData.entries[i],
+ aIdMap, aDocIdentMap), true);
+ }
+
+ // make sure to reset the capabilities and attributes, in case this tab gets reused
+ let disallow = new Set(tabData.disallow && tabData.disallow.split(","));
+ for (let cap of gDocShellCapabilities(browser.docShell))
+ browser.docShell["allow" + cap] = !disallow.has(cap);
+
+ // Restore tab attributes.
+ if ("attributes" in tabData) {
+ TabAttributes.set(tab, tabData.attributes);
+ }
+
+ // Restore the tab icon.
+ if ("image" in tabData) {
+ // Using null as the loadingPrincipal because serializing
+ // the principal would be overkill. Within SetIcon we
+ // default to the systemPrincipal if aLoadingPrincipal is
+ // null which will allow the favicon to load.
+ aWindow.gBrowser.setIcon(tab, tabData.image, null);
+ }
+
+ if (tabData.storage && browser.docShell instanceof Ci.nsIDocShell)
+ SessionStorage.deserialize(browser.docShell, tabData.storage);
+
+ // notify the tabbrowser that the tab chrome has been restored
+ var event = aWindow.document.createEvent("Events");
+ event.initEvent("SSTabRestoring", true, false);
+ tab.dispatchEvent(event);
+
+ // Restore the history in the next tab
+ aWindow.setTimeout(function(){
+ _this.restoreHistory(aWindow, aTabs, aTabData, aIdMap, aDocIdentMap,
+ aRestoreImmediately);
+ }, 0);
+
+ // This could cause us to ignore max_concurrent_tabs pref a bit, but
+ // it ensures each window will have its selected tab loaded.
+ if (aRestoreImmediately || aWindow.gBrowser.selectedBrowser == browser) {
+ this.restoreTab(tab);
+ }
+ else {
+ TabRestoreQueue.add(tab);
+ this.restoreNextTab();
+ }
+ },
+
+ /**
+ * Restores the specified tab. If the tab can't be restored (eg, no history or
+ * calling gotoIndex fails), then state changes will be rolled back.
+ * This method will check if gTabsProgressListener is attached to the tab's
+ * window, ensuring that we don't get caught without one.
+ * This method removes the session history listener right before starting to
+ * attempt a load. This will prevent cases of "stuck" listeners.
+ * If this method returns false, then it is up to the caller to decide what to
+ * do. In the common case (restoreNextTab), we will want to then attempt to
+ * restore the next tab. In the other case (selecting the tab, reloading the
+ * tab), the caller doesn't actually want to do anything if no page is loaded.
+ *
+ * @param aTab
+ * the tab to restore
+ *
+ * @returns true/false indicating whether or not a load actually happened
+ */
+ restoreTab: function(aTab) {
+ let window = aTab.ownerDocument.defaultView;
+ let browser = aTab.linkedBrowser;
+ let tabData = browser.__SS_data;
+
+ // There are cases within where we haven't actually started a load. In that
+ // that case we'll reset state changes we made and return false to the caller
+ // can handle appropriately.
+ let didStartLoad = false;
+
+ // Make sure that the tabs progress listener is attached to this window
+ this._ensureTabsProgressListener(window);
+
+ // Make sure that this tab is removed from the priority queue.
+ TabRestoreQueue.remove(aTab);
+
+ // Increase our internal count.
+ this._tabsRestoringCount++;
+
+ // Set this tab's state to restoring
+ browser.__SS_restoreState = TAB_STATE_RESTORING;
+ browser.removeAttribute("pending");
+ aTab.removeAttribute("pending");
+
+ // Remove the history listener, since we no longer need it once we start restoring
+ this._removeSHistoryListener(aTab);
+
+ let activeIndex = (tabData.index || tabData.entries.length) - 1;
+ if (activeIndex >= tabData.entries.length)
+ activeIndex = tabData.entries.length - 1;
+ // Reset currentURI. This creates a new session history entry with a new
+ // doc identifier, so we need to explicitly save and restore the old doc
+ // identifier (corresponding to the SHEntry at activeIndex) below.
+ browser.webNavigation.setCurrentURI(this._getURIFromString("about:blank"));
+ // Attach data that will be restored on "load" event, after tab is restored.
+ if (activeIndex > -1) {
+ // restore those aspects of the currently active documents which are not
+ // preserved in the plain history entries (mainly scroll state and text data)
+ browser.__SS_restore_data = tabData.entries[activeIndex] || {};
+ browser.__SS_restore_pageStyle = tabData.pageStyle || "";
+ browser.__SS_restore_tab = aTab;
+ didStartLoad = true;
+ try {
+ // In order to work around certain issues in session history, we need to
+ // force session history to update its internal index and call reload
+ // instead of gotoIndex. See bug 597315.
+ browser.webNavigation.sessionHistory.getEntryAtIndex(activeIndex, true);
+ browser.webNavigation.sessionHistory.reloadCurrentEntry();
+ // If the user prefers it, bypass cache and always load from the network,
+ // but only if restoring on demand, to prevent request flooding (since
+ // reloading will override the max tabs to restore concurrently mechanism).
+ // See Issue #1772
+ if (TabRestoreQueue.prefs.restoreOnDemand) {
+ let flags = Ci.nsIWebNavigation.LOAD_FLAGS_NONE;
+ switch (this._cacheBehavior) {
+ case 2: // hard refresh
+ flags = Ci.nsIWebNavigation.LOAD_FLAGS_BYPASS_PROXY |
+ Ci.nsIWebNavigation.LOAD_FLAGS_BYPASS_CACHE;
+ browser.webNavigation.reload(flags);
+ break;
+ case 1: // soft refresh
+ browser.webNavigation.reload(flags);
+ break;
+ default: // 0 or other: use cache, so do nothing.
+ break;
+ }
+ }
+ }
+ catch (ex) {
+ // ignore page load errors
+ aTab.removeAttribute("busy");
+ didStartLoad = false;
+ }
+ }
+
+ // Handle userTypedValue. Setting userTypedValue seems to update gURLbar
+ // as needed. Calling loadURI will cancel form filling in restoreDocument
+ if (tabData.userTypedValue) {
+ browser.userTypedValue = tabData.userTypedValue;
+ if (tabData.userTypedClear) {
+ // Make it so that we'll enter restoreDocument on page load. We will
+ // fire SSTabRestored from there. We don't have any form data to restore
+ // so we can just set the URL to null.
+ browser.__SS_restore_data = { url: null };
+ browser.__SS_restore_tab = aTab;
+ if (didStartLoad)
+ browser.stop();
+ didStartLoad = true;
+ browser.loadURIWithFlags(tabData.userTypedValue,
+ Ci.nsIWebNavigation.LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP);
+ }
+ }
+
+ // If we didn't start a load, then we won't reset this tab through the usual
+ // channel (via the progress listener), so reset the tab ourselves. We will
+ // also send SSTabRestored since this tab has technically been restored.
+ if (!didStartLoad) {
+ this._sendTabRestoredNotification(aTab);
+ this._resetTabRestoringState(aTab);
+ }
+
+ return didStartLoad;
+ },
+
+ /**
+ * This _attempts_ to restore the next available tab. If the restore fails,
+ * then we will attempt the next one.
+ * There are conditions where this won't do anything:
+ * if we're in the process of quitting
+ * if there are no tabs to restore
+ * if we have already reached the limit for number of tabs to restore
+ */
+ restoreNextTab: function() {
+ // If we call in here while quitting, we don't actually want to do anything
+ if (this._loadState == STATE_QUITTING)
+ return;
+
+ // Don't exceed the maximum number of concurrent tab restores.
+ if (this._tabsRestoringCount >= this._maxConcurrentTabRestores)
+ return;
+
+ let tab = TabRestoreQueue.shift();
+ if (tab) {
+ let didStartLoad = this.restoreTab(tab);
+ // If we don't start a load in the restored tab (eg, no entries) then we
+ // want to attempt to restore the next tab.
+ if (!didStartLoad)
+ this.restoreNextTab();
+ }
+ },
+
+ /**
+ * expands serialized history data into a session-history-entry instance
+ * @param aEntry
+ * Object containing serialized history data for a URL
+ * @param aIdMap
+ * Hash for ensuring unique frame IDs
+ * @returns nsISHEntry
+ */
+ _deserializeHistoryEntry:
+ function(aEntry, aIdMap, aDocIdentMap) {
+
+ var shEntry = Cc["@mozilla.org/browser/session-history-entry;1"].
+ createInstance(Ci.nsISHEntry);
+
+ shEntry.setURI(this._getURIFromString(aEntry.url));
+ shEntry.setTitle(aEntry.title || aEntry.url);
+ if (aEntry.subframe)
+ shEntry.setIsSubFrame(aEntry.subframe || false);
+ shEntry.loadType = Ci.nsIDocShellLoadInfo.loadHistory;
+ if (aEntry.contentType)
+ shEntry.contentType = aEntry.contentType;
+ if (aEntry.referrer)
+ shEntry.referrerURI = this._getURIFromString(aEntry.referrer);
+ if (aEntry.isSrcdocEntry)
+ shEntry.srcdocData = aEntry.srcdocData;
+
+ if (aEntry.cacheKey) {
+ var cacheKey = Cc["@mozilla.org/supports-PRUint32;1"].
+ createInstance(Ci.nsISupportsPRUint32);
+ cacheKey.data = aEntry.cacheKey;
+ shEntry.cacheKey = cacheKey;
+ }
+
+ if (aEntry.ID) {
+ // get a new unique ID for this frame (since the one from the last
+ // start might already be in use)
+ var id = aIdMap[aEntry.ID] || 0;
+ if (!id) {
+ for (id = Date.now(); id in aIdMap.used; id++);
+ aIdMap[aEntry.ID] = id;
+ aIdMap.used[id] = true;
+ }
+ shEntry.ID = id;
+ }
+
+ if (aEntry.docshellID)
+ shEntry.docshellID = aEntry.docshellID;
+
+ if (aEntry.structuredCloneState && aEntry.structuredCloneVersion) {
+ shEntry.stateData =
+ Cc["@mozilla.org/docshell/structured-clone-container;1"].
+ createInstance(Ci.nsIStructuredCloneContainer);
+
+ shEntry.stateData.initFromBase64(aEntry.structuredCloneState,
+ aEntry.structuredCloneVersion);
+ }
+
+ if (aEntry.scroll) {
+ var scrollPos = (aEntry.scroll || "0,0").split(",");
+ scrollPos = [parseInt(scrollPos[0]) || 0, parseInt(scrollPos[1]) || 0];
+ shEntry.setScrollPosition(scrollPos[0], scrollPos[1]);
+ }
+
+ if (aEntry.postdata_b64) {
+ var postdata = atob(aEntry.postdata_b64);
+ var stream = Cc["@mozilla.org/io/string-input-stream;1"].
+ createInstance(Ci.nsIStringInputStream);
+ stream.setData(postdata, postdata.length);
+ shEntry.postData = stream;
+ }
+
+ let childDocIdents = {};
+ if (aEntry.docIdentifier) {
+ // If we have a serialized document identifier, try to find an SHEntry
+ // which matches that doc identifier and adopt that SHEntry's
+ // BFCacheEntry. If we don't find a match, insert shEntry as the match
+ // for the document identifier.
+ let matchingEntry = aDocIdentMap[aEntry.docIdentifier];
+ if (!matchingEntry) {
+ matchingEntry = {shEntry: shEntry, childDocIdents: childDocIdents};
+ aDocIdentMap[aEntry.docIdentifier] = matchingEntry;
+ }
+ else {
+ shEntry.adoptBFCacheEntry(matchingEntry.shEntry);
+ childDocIdents = matchingEntry.childDocIdents;
+ }
+ }
+
+ // The field aEntry.owner_b64 got renamed to aEntry.triggeringPricipal_b64 in
+ // Bug 1286472. To remain backward compatible we still have to support that
+ // field for a few cycles before we can remove it within Bug 1289785.
+ if (aEntry.owner_b64) {
+ aEntry.triggeringPrincipal_b64 = aEntry.owner_b64;
+ delete aEntry.owner_b64;
+ }
+
+ if (aEntry.triggeringPrincipal_b64) {
+ var triggeringPrincipalInput = Cc["@mozilla.org/io/string-input-stream;1"].
+ createInstance(Ci.nsIStringInputStream);
+ var binaryData = atob(aEntry.triggeringPrincipal_b64);
+ triggeringPrincipalInput.setData(binaryData, binaryData.length);
+ var binaryStream = Cc["@mozilla.org/binaryinputstream;1"].
+ createInstance(Ci.nsIObjectInputStream);
+ binaryStream.setInputStream(triggeringPrincipalInput);
+ try { // Catch possible deserialization exceptions
+ shEntry.triggeringPrincipal = binaryStream.readObject(true);
+ } catch (ex) { debug(ex); }
+ }
+
+ if (aEntry.children && shEntry instanceof Ci.nsISHContainer) {
+ for (var i = 0; i < aEntry.children.length; i++) {
+ //XXXzpao Wallpaper patch for bug 514751
+ if (!aEntry.children[i].url)
+ continue;
+
+ // We're getting sessionrestore.js files with a cycle in the
+ // doc-identifier graph, likely due to bug 698656. (That is, we have
+ // an entry where doc identifier A is an ancestor of doc identifier B,
+ // and another entry where doc identifier B is an ancestor of A.)
+ //
+ // If we were to respect these doc identifiers, we'd create a cycle in
+ // the SHEntries themselves, which causes the docshell to loop forever
+ // when it looks for the root SHEntry.
+ //
+ // So as a hack to fix this, we restrict the scope of a doc identifier
+ // to be a node's siblings and cousins, and pass childDocIdents, not
+ // aDocIdents, to _deserializeHistoryEntry. That is, we say that two
+ // SHEntries with the same doc identifier have the same document iff
+ // they have the same parent or their parents have the same document.
+
+ shEntry.AddChild(this._deserializeHistoryEntry(aEntry.children[i], aIdMap,
+ childDocIdents), i);
+ }
+ }
+
+ return shEntry;
+ },
+
+ /**
+ * Restore properties to a loaded document
+ */
+ restoreDocument: function(aWindow, aBrowser, aEvent) {
+ // wait for the top frame to be loaded completely
+ if (!aEvent || !aEvent.originalTarget || !aEvent.originalTarget.defaultView ||
+ aEvent.originalTarget.defaultView != aEvent.originalTarget.defaultView.top) {
+ return;
+ }
+
+ // always call this before injecting content into a document!
+ function hasExpectedURL(aDocument, aURL)
+ !aURL || aURL.replace(/#.*/, "") == aDocument.location.href.replace(/#.*/, "");
+
+ let selectedPageStyle = aBrowser.__SS_restore_pageStyle;
+ function restoreTextDataAndScrolling(aContent, aData, aPrefix) {
+ if (aData.formdata && hasExpectedURL(aContent.document, aData.url)) {
+ let formdata = aData.formdata;
+
+ // handle backwards compatibility
+ // this is a migration from pre-firefox 15. cf. bug 742051
+ if (!("xpath" in formdata || "id" in formdata)) {
+ formdata = { xpath: {}, id: {} };
+
+ for each (let [key, value] in Iterator(aData.formdata)) {
+ if (key.charAt(0) == "#") {
+ formdata.id[key.slice(1)] = value;
+ } else {
+ formdata.xpath[key] = value;
+ }
+ }
+ }
+
+ // for about:sessionrestore we saved the field as JSON to avoid
+ // nested instances causing humongous sessionstore.js files.
+ // cf. bug 467409
+ if (aData.url == "about:sessionrestore" &&
+ "sessionData" in formdata.id &&
+ typeof formdata.id["sessionData"] == "object") {
+ formdata.id["sessionData"] =
+ JSON.stringify(formdata.id["sessionData"]);
+ }
+
+ // update the formdata
+ aData.formdata = formdata;
+ // merge the formdata
+ DocumentUtils.mergeFormData(aContent.document, formdata);
+ }
+
+ if (aData.innerHTML) {
+ aWindow.setTimeout(function() {
+ if (aContent.document.designMode == "on" &&
+ hasExpectedURL(aContent.document, aData.url) &&
+ aContent.document.body) {
+ aContent.document.body.innerHTML = aData.innerHTML;
+ }
+ }, 0);
+ }
+ var match;
+ if (aData.scroll && (match = /(\d+),(\d+)/.exec(aData.scroll)) != null) {
+ aContent.scrollTo(match[1], match[2]);
+ }
+ Array.forEach(aContent.document.styleSheets, function(aSS) {
+ aSS.disabled = aSS.title && aSS.title != selectedPageStyle;
+ });
+ for (var i = 0; i < aContent.frames.length; i++) {
+ if (aData.children && aData.children[i] &&
+ hasExpectedURL(aContent.document, aData.url)) {
+ restoreTextDataAndScrolling(aContent.frames[i], aData.children[i], aPrefix + i + "|");
+ }
+ }
+ }
+
+ // don't restore text data and scrolling state if the user has navigated
+ // away before the loading completed (except for in-page navigation)
+ if (hasExpectedURL(aEvent.originalTarget, aBrowser.__SS_restore_data.url)) {
+ var content = aEvent.originalTarget.defaultView;
+ restoreTextDataAndScrolling(content, aBrowser.__SS_restore_data, "");
+ aBrowser.markupDocumentViewer.authorStyleDisabled = selectedPageStyle == "_nostyle";
+ }
+
+ // notify the tabbrowser that this document has been completely restored
+ this._sendTabRestoredNotification(aBrowser.__SS_restore_tab);
+
+ delete aBrowser.__SS_restore_data;
+ delete aBrowser.__SS_restore_pageStyle;
+ delete aBrowser.__SS_restore_tab;
+ },
+
+ /**
+ * Restore visibility and dimension features to a window
+ * @param aWindow
+ * Window reference
+ * @param aWinData
+ * Object containing session data for the window
+ */
+ restoreWindowFeatures: function(aWindow, aWinData) {
+ var hidden = (aWinData.hidden)?aWinData.hidden.split(","):[];
+ WINDOW_HIDEABLE_FEATURES.forEach(function(aItem) {
+ aWindow[aItem].visible = hidden.indexOf(aItem) == -1;
+ });
+
+ if (aWinData.isPopup) {
+ this._windows[aWindow.__SSi].isPopup = true;
+ if (aWindow.gURLBar) {
+ aWindow.gURLBar.readOnly = true;
+ aWindow.gURLBar.setAttribute("enablehistory", "false");
+ }
+ }
+ else {
+ delete this._windows[aWindow.__SSi].isPopup;
+ if (aWindow.gURLBar) {
+ aWindow.gURLBar.readOnly = false;
+ aWindow.gURLBar.setAttribute("enablehistory", "true");
+ }
+ }
+
+ var _this = this;
+ aWindow.setTimeout(function() {
+ _this.restoreDimensions.apply(_this, [aWindow,
+ +aWinData.width || 0,
+ +aWinData.height || 0,
+ "screenX" in aWinData ? +aWinData.screenX : NaN,
+ "screenY" in aWinData ? +aWinData.screenY : NaN,
+ aWinData.sizemode || "", aWinData.sidebar || ""]);
+ }, 0);
+ },
+
+ /**
+ * Restore a window's dimensions
+ * @param aWidth
+ * Window width
+ * @param aHeight
+ * Window height
+ * @param aLeft
+ * Window left
+ * @param aTop
+ * Window top
+ * @param aSizeMode
+ * Window size mode (eg: maximized)
+ * @param aSidebar
+ * Sidebar command
+ */
+ restoreDimensions: function(aWindow, aWidth, aHeight, aLeft, aTop, aSizeMode, aSidebar) {
+ var win = aWindow;
+ var _this = this;
+ function win_(aName) { return _this._getWindowDimension(win, aName); }
+
+ // Find available space on the screen where this window is being placed
+ let screen = gScreenManager.screenForRect(aLeft, aTop, aWidth, aHeight);
+ if (screen && !this._prefBranch.getBoolPref("sessionstore.exactPos")) {
+ let screenLeft = {}, screenTop = {}, screenWidth = {}, screenHeight = {};
+ screen.GetAvailRectDisplayPix(screenLeft, screenTop, screenWidth, screenHeight);
+
+ // Screen X/Y are based on the origin of the screen's desktop-pixel coordinate space
+ let screenLeftCss = screenLeft.value;
+ let screenTopCss = screenTop.value;
+
+ // Convert the screen's device pixel dimensions to CSS px dimensions
+ screen.GetAvailRect(screenLeft, screenTop, screenWidth, screenHeight);
+ let cssToDevScale = screen.defaultCSSScaleFactor;
+ let screenRightCss = screenLeftCss + screenWidth.value / cssToDevScale;
+ let screenBottomCss = screenTopCss + screenHeight.value / cssToDevScale;
+
+ // Pull the window within the screen's bounds.
+ // First, ensure the left edge is on-screen
+ if (aLeft < screenLeftCss) {
+ aLeft = screenLeftCss;
+ }
+ // Then check the resulting right edge, and reduce it if necessary.
+ let right = aLeft + aWidth;
+ if (right > screenRightCss) {
+ right = screenRightCss;
+ // See if we can move the left edge leftwards to maintain width.
+ if (aLeft > screenLeftCss) {
+ aLeft = Math.max(right - aWidth, screenLeftCss);
+ }
+ }
+ // Finally, update aWidth to account for the adjusted left and right edges.
+ aWidth = right - aLeft;
+
+ // Do the same in the vertical dimension.
+ // First, ensure the top edge is on-screen
+ if (aTop < screenTopCss) {
+ aTop = screenTopCss;
+ }
+ // Then check the resulting right edge, and reduce it if necessary.
+ let bottom = aTop + aHeight;
+ if (bottom > screenBottomCss) {
+ bottom = screenBottomCss;
+ // See if we can move the top edge upwards to maintain height.
+ if (aTop > screenTopCss) {
+ aTop = Math.max(bottom - aHeight, screenTopCss);
+ }
+ }
+ // Finally, update aHeight to account for the adjusted top and bottom edges.
+ aHeight = bottom - aTop;
+ }
+
+ // Only modify those aspects which aren't correct yet
+ if (!isNaN(aLeft) && !isNaN(aTop) && (aLeft != win_("screenX") || aTop != win_("screenY"))) {
+ aWindow.moveTo(aLeft, aTop);
+ }
+ if (aWidth && aHeight && (aWidth != win_("width") || aHeight != win_("height"))) {
+ // Don't resize the window if it's currently maximized and we would
+ // maximize it again shortly after.
+ if (aSizeMode != "maximized" || win_("sizemode") != "maximized") {
+ aWindow.resizeTo(aWidth, aHeight);
+ }
+ }
+
+ // Restore window state
+ if (aSizeMode && win_("sizemode") != aSizeMode)
+ {
+ switch (aSizeMode)
+ {
+ case "maximized":
+ aWindow.maximize();
+ break;
+ case "minimized":
+ aWindow.minimize();
+ break;
+ case "normal":
+ aWindow.restore();
+ break;
+ }
+ }
+ var sidebar = aWindow.document.getElementById("sidebar-box");
+ if (sidebar.getAttribute("sidebarcommand") != aSidebar) {
+ aWindow.toggleSidebar(aSidebar);
+ }
+ // since resizing/moving a window brings it to the foreground,
+ // we might want to re-focus the last focused window
+ if (this.windowToFocus) {
+ this.windowToFocus.focus();
+ }
+ },
+
+ /**
+ * Restores cookies
+ * @param aCookies
+ * Array of cookie objects
+ */
+ restoreCookies: function(aCookies) {
+ // MAX_EXPIRY should be 2^63-1, but JavaScript can't handle that precision
+ var MAX_EXPIRY = Math.pow(2, 62);
+ for (let i = 0; i < aCookies.length; i++) {
+ var cookie = aCookies[i];
+ try {
+ Services.cookies.add(cookie.host, cookie.path || "", cookie.name || "",
+ cookie.value, !!cookie.secure, !!cookie.httponly, true,
+ "expiry" in cookie ? cookie.expiry : MAX_EXPIRY, {});
+ }
+ catch (ex) { Cu.reportError(ex); } // don't let a single cookie stop recovering
+ }
+ },
+
+ /* ........ Disk Access .............. */
+
+ /**
+ * save state delayed by N ms
+ * marks window as dirty (i.e. data update can't be skipped)
+ * @param aWindow
+ * Window reference
+ * @param aDelay
+ * Milliseconds to delay
+ */
+ saveStateDelayed: function(aWindow, aDelay) {
+ if (aWindow) {
+ this._dirtyWindows[aWindow.__SSi] = true;
+ }
+
+ if (!this._saveTimer) {
+ // interval until the next disk operation is allowed
+ var minimalDelay = this._lastSaveTime + this._interval - Date.now();
+
+ // if we have to wait, set a timer, otherwise saveState directly
+ aDelay = Math.max(minimalDelay, aDelay || 2000);
+ if (aDelay > 0) {
+ this._saveTimer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+ this._saveTimer.init(this, aDelay, Ci.nsITimer.TYPE_ONE_SHOT);
+ }
+ else {
+ this.saveState();
+ }
+ }
+ },
+
+ /**
+ * save state to disk
+ * @param aUpdateAll
+ * Bool update all windows
+ */
+ saveState: function(aUpdateAll) {
+ // If crash recovery is disabled, we only want to resume with pinned tabs
+ // if we crash.
+ let pinnedOnly = this._loadState == STATE_RUNNING && !this._resume_from_crash;
+
+ var oState = this._getCurrentState(aUpdateAll, pinnedOnly);
+ if (!oState) {
+ return;
+ }
+
+ // Forget about private windows.
+ for (let i = oState.windows.length - 1; i >= 0; i--) {
+ if (oState.windows[i].isPrivate) {
+ oState.windows.splice(i, 1);
+ if (oState.selectedWindow >= i) {
+ oState.selectedWindow--;
+ }
+ }
+ }
+
+ for (let i = oState._closedWindows.length - 1; i >= 0; i--) {
+ if (oState._closedWindows[i].isPrivate) {
+ oState._closedWindows.splice(i, 1);
+ }
+ }
+
+ // We want to restore closed windows that are marked with _shouldRestore.
+ // We're doing this here because we want to control this only when saving
+ // the file.
+ while (oState._closedWindows.length) {
+ let i = oState._closedWindows.length - 1;
+ if (oState._closedWindows[i]._shouldRestore) {
+ delete oState._closedWindows[i]._shouldRestore;
+ oState.windows.unshift(oState._closedWindows.pop());
+ }
+ else {
+ // We only need to go until we hit !needsRestore since we're going in reverse
+ break;
+ }
+ }
+
+ if (pinnedOnly) {
+ // Save original resume_session_once preference for when quiting browser,
+ // otherwise session will be restored next time browser starts and we
+ // only want it to be restored in the case of a crash.
+ if (this._resume_session_once_on_shutdown == null) {
+ this._resume_session_once_on_shutdown =
+ this._prefBranch.getBoolPref("sessionstore.resume_session_once");
+ this._prefBranch.setBoolPref("sessionstore.resume_session_once", true);
+ // flush the preference file so preference will be saved in case of a crash
+ Services.prefs.savePrefFile(null);
+ }
+ }
+
+ // Persist the last session if we deferred restoring it
+ if (this._lastSessionState)
+ oState.lastSessionState = this._lastSessionState;
+
+ // Make sure that we keep the previous session if we started with a single
+ // private window and no non-private windows have been opened, yet.
+ if (this._deferredInitialState) {
+ oState.windows = this._deferredInitialState.windows || [];
+ }
+
+ this._saveStateObject(oState);
+ },
+
+ /**
+ * write a state object to disk
+ */
+ _saveStateObject: function(aStateObj) {
+ let data = this._toJSONString(aStateObj);
+
+ let stateString = this._createSupportsString(data);
+ Services.obs.notifyObservers(stateString, "sessionstore-state-write", "");
+ data = stateString.data;
+
+ // Don't touch the file if an observer has deleted all state data.
+ if (!data) {
+ return;
+ }
+
+ let promise;
+ // If "sessionstore.resume_from_crash" is true, attempt to backup the
+ // session file first, before writing to it.
+ if (this._resume_from_crash) {
+ // Note that we do not have race conditions here as _SessionFile
+ // guarantees that any I/O operation is completed before proceeding to
+ // the next I/O operation.
+ // Note backup happens only once, on initial save.
+ promise = this._backupSessionFileOnce;
+ } else {
+ promise = Promise.resolve();
+ }
+
+ // Attempt to write to the session file (potentially, depending on
+ // "sessionstore.resume_from_crash" preference, after successful backup).
+ promise = promise.then(function onSuccess() {
+ // Write (atomically) to a session file, using a tmp file.
+ return _SessionFile.write(data);
+ });
+
+ // Once the session file is successfully updated, save the time stamp of the
+ // last save and notify the observers.
+ promise = promise.then(() => {
+ this._lastSaveTime = Date.now();
+ Services.obs.notifyObservers(null, "sessionstore-state-write-complete",
+ "");
+ });
+ },
+
+ /* ........ Auxiliary Functions .............. */
+
+ // Wrap a string as a nsISupports
+ _createSupportsString: function(aData) {
+ let string = Cc["@mozilla.org/supports-string;1"]
+ .createInstance(Ci.nsISupportsString);
+ string.data = aData;
+ return string;
+ },
+
+ /**
+ * call a callback for all currently opened browser windows
+ * (might miss the most recent one)
+ * @param aFunc
+ * Callback each window is passed to
+ */
+ _forEachBrowserWindow: function(aFunc) {
+ var windowsEnum = Services.wm.getEnumerator("navigator:browser");
+
+ while (windowsEnum.hasMoreElements()) {
+ var window = windowsEnum.getNext();
+ if (window.__SSi && !window.closed) {
+ aFunc.call(this, window);
+ }
+ }
+ },
+
+ /**
+ * Returns most recent window
+ * @returns Window reference
+ */
+ _getMostRecentBrowserWindow: function() {
+ var win = Services.wm.getMostRecentWindow("navigator:browser");
+ if (!win)
+ return null;
+ if (!win.closed)
+ return win;
+
+#ifdef BROKEN_WM_Z_ORDER
+ win = null;
+ var windowsEnum = Services.wm.getEnumerator("navigator:browser");
+ // this is oldest to newest, so this gets a bit ugly
+ while (windowsEnum.hasMoreElements()) {
+ let nextWin = windowsEnum.getNext();
+ if (!nextWin.closed)
+ win = nextWin;
+ }
+ return win;
+#else
+ var windowsEnum =
+ Services.wm.getZOrderDOMWindowEnumerator("navigator:browser", true);
+ while (windowsEnum.hasMoreElements()) {
+ win = windowsEnum.getNext();
+ if (!win.closed)
+ return win;
+ }
+ return null;
+#endif
+ },
+
+ /**
+ * Calls onClose for windows that are determined to be closed but aren't
+ * destroyed yet, which would otherwise cause getBrowserState and
+ * setBrowserState to treat them as open windows.
+ */
+ _handleClosedWindows: function() {
+ var windowsEnum = Services.wm.getEnumerator("navigator:browser");
+
+ while (windowsEnum.hasMoreElements()) {
+ var window = windowsEnum.getNext();
+ if (window.closed) {
+ this.onClose(window);
+ }
+ }
+ },
+
+ /**
+ * open a new browser window for a given session state
+ * called when restoring a multi-window session
+ * @param aState
+ * Object containing session data
+ */
+ _openWindowWithState: function(aState) {
+ var argString = Cc["@mozilla.org/supports-string;1"].
+ createInstance(Ci.nsISupportsString);
+ argString.data = "";
+
+ // Build feature string
+ let features = "chrome,dialog=no,macsuppressanimation,all";
+ let winState = aState.windows[0];
+ WINDOW_ATTRIBUTES.forEach(function(aFeature) {
+ // Use !isNaN as an easy way to ignore sizemode and check for numbers
+ if (aFeature in winState && !isNaN(winState[aFeature]))
+ features += "," + aFeature + "=" + winState[aFeature];
+ });
+
+ if (winState.isPrivate) {
+ features += ",private";
+ }
+
+ var window =
+ Services.ww.openWindow(null, this._prefBranch.getCharPref("chromeURL"),
+ "_blank", features, argString);
+
+ do {
+ var ID = "window" + Math.random();
+ } while (ID in this._statesToRestore);
+ this._statesToRestore[(window.__SS_restoreID = ID)] = aState;
+
+ return window;
+ },
+
+ /**
+ * Whether or not to resume session, if not recovering from a crash.
+ * @returns bool
+ */
+ _doResumeSession: function() {
+ return this._prefBranch.getIntPref("startup.page") == 3 ||
+ this._prefBranch.getBoolPref("sessionstore.resume_session_once");
+ },
+
+ /**
+ * whether the user wants to load any other page at startup
+ * (except the homepage) - needed for determining whether to overwrite the current tabs
+ * C.f.: nsBrowserContentHandler's defaultArgs implementation.
+ * @returns bool
+ */
+ _isCmdLineEmpty: function(aWindow, aState) {
+ var pinnedOnly = aState.windows &&
+ aState.windows.every(function(win)
+ win.tabs.every(function(tab) tab.pinned));
+
+ let hasFirstArgument = aWindow.arguments && aWindow.arguments[0];
+ if (!pinnedOnly) {
+ let defaultArgs = Cc["@mozilla.org/browser/clh;1"].
+ getService(Ci.nsIBrowserHandler).defaultArgs;
+ if (aWindow.arguments &&
+ aWindow.arguments[0] &&
+ aWindow.arguments[0] == defaultArgs)
+ hasFirstArgument = false;
+ }
+
+ return !hasFirstArgument;
+ },
+
+ /**
+ * don't save sensitive data if the user doesn't want to
+ * (distinguishes between encrypted and non-encrypted sites)
+ * @param aIsHTTPS
+ * Bool is encrypted
+ * @param aUseDefaultPref
+ * don't do normal check for deferred
+ * @returns bool
+ */
+ checkPrivacyLevel: function(aIsHTTPS, aUseDefaultPref) {
+ let pref = "sessionstore.privacy_level";
+ // If we're in the process of quitting and we're not autoresuming the session
+ // then we should treat it as a deferred session. We have a different privacy
+ // pref for that case.
+ if (!aUseDefaultPref && this._loadState == STATE_QUITTING && !this._doResumeSession())
+ pref = "sessionstore.privacy_level_deferred";
+ return this._prefBranch.getIntPref(pref) < (aIsHTTPS ? PRIVACY_ENCRYPTED : PRIVACY_FULL);
+ },
+
+ /**
+ * on popup windows, the XULWindow's attributes seem not to be set correctly
+ * we use thus JSDOMWindow attributes for sizemode and normal window attributes
+ * (and hope for reasonable values when maximized/minimized - since then
+ * outerWidth/outerHeight aren't the dimensions of the restored window)
+ * @param aWindow
+ * Window reference
+ * @param aAttribute
+ * String sizemode | width | height | other window attribute
+ * @returns string
+ */
+ _getWindowDimension: function(aWindow, aAttribute) {
+ if (aAttribute == "sizemode") {
+ switch (aWindow.windowState) {
+ case aWindow.STATE_FULLSCREEN:
+ case aWindow.STATE_MAXIMIZED:
+ return "maximized";
+ case aWindow.STATE_MINIMIZED:
+ return "minimized";
+ default:
+ return "normal";
+ }
+ }
+
+ var dimension;
+ switch (aAttribute) {
+ case "width":
+ dimension = aWindow.outerWidth;
+ break;
+ case "height":
+ dimension = aWindow.outerHeight;
+ break;
+ default:
+ dimension = aAttribute in aWindow ? aWindow[aAttribute] : "";
+ break;
+ }
+
+ if (aWindow.windowState == aWindow.STATE_NORMAL) {
+ return dimension;
+ }
+ return aWindow.document.documentElement.getAttribute(aAttribute) || dimension;
+ },
+
+ /**
+ * Get nsIURI from string
+ * @param string
+ * @returns nsIURI
+ */
+ _getURIFromString: function(aString) {
+ return Services.io.newURI(aString, null, null);
+ },
+
+ /**
+ * @param aState is a session state
+ * @param aRecentCrashes is the number of consecutive crashes
+ * @returns whether a restore page will be needed for the session state
+ */
+ _needsRestorePage: function(aState, aRecentCrashes) {
+ const SIX_HOURS_IN_MS = 6 * 60 * 60 * 1000;
+
+ // don't display the page when there's nothing to restore
+ let winData = aState.windows || null;
+ if (!winData || winData.length == 0)
+ return false;
+
+ // don't wrap a single about:sessionrestore page
+ if (winData.length == 1 && winData[0].tabs &&
+ winData[0].tabs.length == 1 && winData[0].tabs[0].entries &&
+ winData[0].tabs[0].entries.length == 1 &&
+ winData[0].tabs[0].entries[0].url == "about:sessionrestore")
+ return false;
+
+ // don't automatically restore in Safe Mode
+ if (Services.appinfo.inSafeMode)
+ return true;
+
+ let max_resumed_crashes =
+ this._prefBranch.getIntPref("sessionstore.max_resumed_crashes");
+ let sessionAge = aState.session && aState.session.lastUpdate &&
+ (Date.now() - aState.session.lastUpdate);
+
+ return max_resumed_crashes != -1 &&
+ (aRecentCrashes > max_resumed_crashes ||
+ sessionAge && sessionAge >= SIX_HOURS_IN_MS);
+ },
+
+ /**
+ * Determine if the tab state we're passed is something we should save. This
+ * is used when closing a tab or closing a window with a single tab
+ *
+ * @param aTabState
+ * The current tab state
+ * @returns boolean
+ */
+ _shouldSaveTabState: function(aTabState) {
+ // If the tab has only a transient about: history entry, no other
+ // session history, and no userTypedValue, then we don't actually want to
+ // store this tab's data.
+ return aTabState.entries.length &&
+ !(aTabState.entries.length == 1 &&
+ (aTabState.entries[0].url == "about:blank" ||
+ aTabState.entries[0].url == "about:newtab") &&
+ !aTabState.userTypedValue);
+ },
+
+ /**
+ * Determine if we can restore history into this tab.
+ * This will be false when a tab has been removed (usually between
+ * restoreHistoryPrecursor && restoreHistory) or if the tab is still marked
+ * as loading.
+ *
+ * @param aTab
+ * @returns boolean
+ */
+ _canRestoreTabHistory: function(aTab) {
+ return aTab.parentNode && aTab.linkedBrowser &&
+ aTab.linkedBrowser.__SS_tabStillLoading;
+ },
+
+ /**
+ * This is going to take a state as provided at startup (via
+ * nsISessionStartup.state) and split it into 2 parts. The first part
+ * (defaultState) will be a state that should still be restored at startup,
+ * while the second part (state) is a state that should be saved for later.
+ * defaultState will be comprised of windows with only pinned tabs, extracted
+ * from state. It will contain the cookies that go along with the history
+ * entries in those tabs. It will also contain window position information.
+ *
+ * defaultState will be restored at startup. state will be placed into
+ * this._lastSessionState and will be kept in case the user explicitly wants
+ * to restore the previous session (publicly exposed as restoreLastSession).
+ *
+ * @param state
+ * The state, presumably from nsISessionStartup.state
+ * @returns [defaultState, state]
+ */
+ _prepDataForDeferredRestore: function(state) {
+ // Make sure that we don't modify the global state as provided by
+ // nsSessionStartup.state. Converting the object to a JSON string and
+ // parsing it again is the easiest way to do that, although not the most
+ // efficient one. Deferred sessions that don't have automatic session
+ // restore enabled tend to be a lot smaller though so that this shouldn't
+ // be a big perf hit.
+ state = JSON.parse(JSON.stringify(state));
+
+ let defaultState = { windows: [], selectedWindow: 1 };
+
+ state.selectedWindow = state.selectedWindow || 1;
+
+ // Look at each window, remove pinned tabs, adjust selectedindex,
+ // remove window if necessary.
+ for (let wIndex = 0; wIndex < state.windows.length;) {
+ let window = state.windows[wIndex];
+ window.selected = window.selected || 1;
+ // We're going to put the state of the window into this object
+ let pinnedWindowState = { tabs: [], cookies: []};
+ for (let tIndex = 0; tIndex < window.tabs.length;) {
+ if (window.tabs[tIndex].pinned) {
+ // Adjust window.selected
+ if (tIndex + 1 < window.selected)
+ window.selected -= 1;
+ else if (tIndex + 1 == window.selected)
+ pinnedWindowState.selected = pinnedWindowState.tabs.length + 2;
+ // + 2 because the tab isn't actually in the array yet
+
+ // Now add the pinned tab to our window
+ pinnedWindowState.tabs =
+ pinnedWindowState.tabs.concat(window.tabs.splice(tIndex, 1));
+ // We don't want to increment tIndex here.
+ continue;
+ }
+ tIndex++;
+ }
+
+ // At this point the window in the state object has been modified (or not)
+ // We want to build the rest of this new window object if we have pinnedTabs.
+ if (pinnedWindowState.tabs.length) {
+ // First get the other attributes off the window
+ WINDOW_ATTRIBUTES.forEach(function(attr) {
+ if (attr in window) {
+ pinnedWindowState[attr] = window[attr];
+ delete window[attr];
+ }
+ });
+ // We're just copying position data into the pinned window.
+ // Not copying over:
+ // - _closedTabs
+ // - extData
+ // - isPopup
+ // - hidden
+
+ // Assign a unique ID to correlate the window to be opened with the
+ // remaining data
+ window.__lastSessionWindowID = pinnedWindowState.__lastSessionWindowID
+ = "" + Date.now() + Math.random();
+
+ // Extract the cookies that belong with each pinned tab
+ this._splitCookiesFromWindow(window, pinnedWindowState);
+
+ // Actually add this window to our defaultState
+ defaultState.windows.push(pinnedWindowState);
+ // Remove the window from the state if it doesn't have any tabs
+ if (!window.tabs.length) {
+ if (wIndex + 1 <= state.selectedWindow)
+ state.selectedWindow -= 1;
+ else if (wIndex + 1 == state.selectedWindow)
+ defaultState.selectedIndex = defaultState.windows.length + 1;
+
+ state.windows.splice(wIndex, 1);
+ // We don't want to increment wIndex here.
+ continue;
+ }
+
+
+ }
+ wIndex++;
+ }
+
+ return [defaultState, state];
+ },
+
+ /**
+ * Splits out the cookies from aWinState into aTargetWinState based on the
+ * tabs that are in aTargetWinState.
+ * This alters the state of aWinState and aTargetWinState.
+ */
+ _splitCookiesFromWindow:
+ function(aWinState, aTargetWinState) {
+ if (!aWinState.cookies || !aWinState.cookies.length)
+ return;
+
+ // Get the hosts for history entries in aTargetWinState
+ let cookieHosts = {};
+ aTargetWinState.tabs.forEach(function(tab) {
+ tab.entries.forEach(function(entry) {
+ this._extractHostsForCookiesFromEntry(entry, cookieHosts, false);
+ }, this);
+ }, this);
+
+ // By creating a regex we reduce overhead and there is only one loop pass
+ // through either array (cookieHosts and aWinState.cookies).
+ let hosts = Object.keys(cookieHosts).join("|").replace("\\.", "\\.", "g");
+ // If we don't actually have any hosts, then we don't want to do anything.
+ if (!hosts.length)
+ return;
+ let cookieRegex = new RegExp(".*(" + hosts + ")");
+ for (let cIndex = 0; cIndex < aWinState.cookies.length;) {
+ if (cookieRegex.test(aWinState.cookies[cIndex].host)) {
+ aTargetWinState.cookies =
+ aTargetWinState.cookies.concat(aWinState.cookies.splice(cIndex, 1));
+ continue;
+ }
+ cIndex++;
+ }
+ },
+
+ /**
+ * Converts a JavaScript object into a JSON string
+ * (see http://www.json.org/ for more information).
+ *
+ * The inverse operation consists of JSON.parse(JSON_string).
+ *
+ * @param aJSObject is the object to be converted
+ * @returns the object's JSON representation
+ */
+ _toJSONString: function(aJSObject) {
+ return JSON.stringify(aJSObject);
+ },
+
+ _sendRestoreCompletedNotifications: function() {
+ // not all windows restored, yet
+ if (this._restoreCount > 1) {
+ this._restoreCount--;
+ return;
+ }
+
+ // observers were already notified
+ if (this._restoreCount == -1)
+ return;
+
+ // This was the last window restored at startup, notify observers.
+ Services.obs.notifyObservers(null,
+ this._browserSetState ? NOTIFY_BROWSER_STATE_RESTORED : NOTIFY_WINDOWS_RESTORED,
+ "");
+
+ this._browserSetState = false;
+ this._restoreCount = -1;
+ },
+
+ /**
+ * Set the given window's busy state
+ * @param aWindow the window
+ * @param aValue the window's busy state
+ */
+ _setWindowStateBusyValue:
+ function(aWindow, aValue) {
+
+ this._windows[aWindow.__SSi].busy = aValue;
+
+ // Keep the to-be-restored state in sync because that is returned by
+ // getWindowState() as long as the window isn't loaded, yet.
+ if (!this._isWindowLoaded(aWindow)) {
+ let stateToRestore = this._statesToRestore[aWindow.__SS_restoreID].windows[0];
+ stateToRestore.busy = aValue;
+ }
+ },
+
+ /**
+ * Set the given window's state to 'not busy'.
+ * @param aWindow the window
+ */
+ _setWindowStateReady: function(aWindow) {
+ this._setWindowStateBusyValue(aWindow, false);
+ this._sendWindowStateEvent(aWindow, "Ready");
+ },
+
+ /**
+ * Set the given window's state to 'busy'.
+ * @param aWindow the window
+ */
+ _setWindowStateBusy: function(aWindow) {
+ this._setWindowStateBusyValue(aWindow, true);
+ this._sendWindowStateEvent(aWindow, "Busy");
+ },
+
+ /**
+ * Dispatch an SSWindowState_____ event for the given window.
+ * @param aWindow the window
+ * @param aType the type of event, SSWindowState will be prepended to this string
+ */
+ _sendWindowStateEvent: function(aWindow, aType) {
+ let event = aWindow.document.createEvent("Events");
+ event.initEvent("SSWindowState" + aType, true, false);
+ aWindow.dispatchEvent(event);
+ },
+
+ /**
+ * Dispatch the SSTabRestored event for the given tab.
+ * @param aTab the which has been restored
+ */
+ _sendTabRestoredNotification: function(aTab) {
+ let event = aTab.ownerDocument.createEvent("Events");
+ event.initEvent("SSTabRestored", true, false);
+ aTab.dispatchEvent(event);
+ },
+
+ /**
+ * @param aWindow
+ * Window reference
+ * @returns whether this window's data is still cached in _statesToRestore
+ * because it's not fully loaded yet
+ */
+ _isWindowLoaded: function(aWindow) {
+ return !aWindow.__SS_restoreID;
+ },
+
+ /**
+ * Replace "Loading..." with the tab label (with minimal side-effects)
+ * @param aString is the string the title is stored in
+ * @param aTabbrowser is a tabbrowser object, containing aTab
+ * @param aTab is the tab whose title we're updating & using
+ *
+ * @returns aString that has been updated with the new title
+ */
+ _replaceLoadingTitle : function(aString, aTabbrowser, aTab) {
+ if (aString == aTabbrowser.mStringBundle.getString("tabs.connecting")) {
+ aTabbrowser.setTabTitle(aTab);
+ [aString, aTab.label] = [aTab.label, aString];
+ }
+ return aString;
+ },
+
+ /**
+ * Resize this._closedWindows to the value of the pref, except in the case
+ * where we don't have any non-popup windows on Windows and Linux. Then we must
+ * resize such that we have at least one non-popup window.
+ */
+ _capClosedWindows : function() {
+ if (this._closedWindows.length <= this._max_windows_undo)
+ return;
+ let spliceTo = this._max_windows_undo;
+ let normalWindowIndex = 0;
+ // try to find a non-popup window in this._closedWindows
+ while (normalWindowIndex < this._closedWindows.length &&
+ !!this._closedWindows[normalWindowIndex].isPopup)
+ normalWindowIndex++;
+ if (normalWindowIndex >= this._max_windows_undo)
+ spliceTo = normalWindowIndex + 1;
+ this._closedWindows.splice(spliceTo, this._closedWindows.length);
+ },
+
+ _clearRestoringWindows: function() {
+ for (let i = 0; i < this._closedWindows.length; i++) {
+ delete this._closedWindows[i]._shouldRestore;
+ }
+ },
+
+ /**
+ * Reset state to prepare for a new session state to be restored.
+ */
+ _resetRestoringState: function() {
+ TabRestoreQueue.reset();
+ this._tabsRestoringCount = 0;
+ },
+
+ /**
+ * Reset the restoring state for a particular tab. This will be called when
+ * removing a tab or when a tab needs to be reset (it's being overwritten).
+ *
+ * @param aTab
+ * The tab that will be "reset"
+ */
+ _resetTabRestoringState: function(aTab) {
+ let window = aTab.ownerDocument.defaultView;
+ let browser = aTab.linkedBrowser;
+
+ // Keep the tab's previous state for later in this method
+ let previousState = browser.__SS_restoreState;
+
+ // The browser is no longer in any sort of restoring state.
+ delete browser.__SS_restoreState;
+
+ aTab.removeAttribute("pending");
+ browser.removeAttribute("pending");
+
+ // We want to decrement window.__SS_tabsToRestore here so that we always
+ // decrement it AFTER a tab is done restoring or when a tab gets "reset".
+ window.__SS_tabsToRestore--;
+
+ // Remove the progress listener if we should.
+ this._removeTabsProgressListener(window);
+
+ if (previousState == TAB_STATE_RESTORING) {
+ if (this._tabsRestoringCount)
+ this._tabsRestoringCount--;
+ }
+ else if (previousState == TAB_STATE_NEEDS_RESTORE) {
+ // Make sure the session history listener is removed. This is normally
+ // done in restoreTab, but this tab is being removed before that gets called.
+ this._removeSHistoryListener(aTab);
+
+ // Make sure that the tab is removed from the list of tabs to restore.
+ // Again, this is normally done in restoreTab, but that isn't being called
+ // for this tab.
+ TabRestoreQueue.remove(aTab);
+ }
+ },
+
+ /**
+ * Add the tabs progress listener to the window if it isn't already
+ *
+ * @param aWindow
+ * The window to add our progress listener to
+ */
+ _ensureTabsProgressListener: function(aWindow) {
+ let tabbrowser = aWindow.gBrowser;
+ if (tabbrowser.mTabsProgressListeners.indexOf(gRestoreTabsProgressListener) == -1)
+ tabbrowser.addTabsProgressListener(gRestoreTabsProgressListener);
+ },
+
+ /**
+ * Attempt to remove the tabs progress listener from the window.
+ *
+ * @param aWindow
+ * The window from which to remove our progress listener from
+ */
+ _removeTabsProgressListener: function(aWindow) {
+ // If there are no tabs left to restore (or restoring) in this window, then
+ // we can safely remove the progress listener from this window.
+ if (!aWindow.__SS_tabsToRestore)
+ aWindow.gBrowser.removeTabsProgressListener(gRestoreTabsProgressListener);
+ },
+
+ /**
+ * Remove the session history listener from the tab's browser if there is one.
+ *
+ * @param aTab
+ * The tab who's browser to remove the listener
+ */
+ _removeSHistoryListener: function(aTab) {
+ let browser = aTab.linkedBrowser;
+ if (browser.__SS_shistoryListener) {
+ browser.webNavigation.sessionHistory.
+ removeSHistoryListener(browser.__SS_shistoryListener);
+ delete browser.__SS_shistoryListener;
+ }
+ }
+};
+
+/**
+ * Priority queue that keeps track of a list of tabs to restore and returns
+ * the tab we should restore next, based on priority rules. We decide between
+ * pinned, visible and hidden tabs in that and FIFO order. Hidden tabs are only
+ * restored with restore_hidden_tabs=true.
+ */
+var TabRestoreQueue = {
+ // The separate buckets used to store tabs.
+ tabs: {priority: [], visible: [], hidden: []},
+
+ // Preferences used by the TabRestoreQueue to determine which tabs
+ // are restored automatically and which tabs will be on-demand.
+ prefs: {
+ // Lazy getter that returns whether tabs are restored on demand.
+ get restoreOnDemand() {
+ let updateValue = () => {
+ let value = Services.prefs.getBoolPref(PREF);
+ let definition = {value: value, configurable: true};
+ Object.defineProperty(this, "restoreOnDemand", definition);
+ return value;
+ }
+
+ const PREF = "browser.sessionstore.restore_on_demand";
+ Services.prefs.addObserver(PREF, updateValue, false);
+ return updateValue();
+ },
+
+ // Lazy getter that returns whether pinned tabs are restored on demand.
+ get restorePinnedTabsOnDemand() {
+ let updateValue = () => {
+ let value = Services.prefs.getBoolPref(PREF);
+ let definition = {value: value, configurable: true};
+ Object.defineProperty(this, "restorePinnedTabsOnDemand", definition);
+ return value;
+ }
+
+ const PREF = "browser.sessionstore.restore_pinned_tabs_on_demand";
+ Services.prefs.addObserver(PREF, updateValue, false);
+ return updateValue();
+ },
+
+ // Lazy getter that returns whether we should restore hidden tabs.
+ get restoreHiddenTabs() {
+ let updateValue = () => {
+ let value = Services.prefs.getBoolPref(PREF);
+ let definition = {value: value, configurable: true};
+ Object.defineProperty(this, "restoreHiddenTabs", definition);
+ return value;
+ }
+
+ const PREF = "browser.sessionstore.restore_hidden_tabs";
+ Services.prefs.addObserver(PREF, updateValue, false);
+ return updateValue();
+ }
+ },
+
+ // Resets the queue and removes all tabs.
+ reset: function() {
+ this.tabs = {priority: [], visible: [], hidden: []};
+ },
+
+ // Adds a tab to the queue and determines its priority bucket.
+ add: function(tab) {
+ let {priority, hidden, visible} = this.tabs;
+
+ if (tab.pinned) {
+ priority.push(tab);
+ } else if (tab.hidden) {
+ hidden.push(tab);
+ } else {
+ visible.push(tab);
+ }
+ },
+
+ // Removes a given tab from the queue, if it's in there.
+ remove: function(tab) {
+ let {priority, hidden, visible} = this.tabs;
+
+ // We'll always check priority first since we don't
+ // have an indicator if a tab will be there or not.
+ let set = priority;
+ let index = set.indexOf(tab);
+
+ if (index == -1) {
+ set = tab.hidden ? hidden : visible;
+ index = set.indexOf(tab);
+ }
+
+ if (index > -1) {
+ set.splice(index, 1);
+ }
+ },
+
+ // Returns and removes the tab with the highest priority.
+ shift: function() {
+ let set;
+ let {priority, hidden, visible} = this.tabs;
+
+ let {restoreOnDemand, restorePinnedTabsOnDemand} = this.prefs;
+ let restorePinned = !(restoreOnDemand && restorePinnedTabsOnDemand);
+ if (restorePinned && priority.length) {
+ set = priority;
+ } else if (!restoreOnDemand) {
+ if (visible.length) {
+ set = visible;
+ } else if (this.prefs.restoreHiddenTabs && hidden.length) {
+ set = hidden;
+ }
+ }
+
+ return set && set.shift();
+ },
+
+ // Moves a given tab from the 'hidden' to the 'visible' bucket.
+ hiddenToVisible: function(tab) {
+ let {hidden, visible} = this.tabs;
+ let index = hidden.indexOf(tab);
+
+ if (index > -1) {
+ hidden.splice(index, 1);
+ visible.push(tab);
+ } else {
+ throw new Error("restore queue: hidden tab not found");
+ }
+ },
+
+ // Moves a given tab from the 'visible' to the 'hidden' bucket.
+ visibleToHidden: function(tab) {
+ let {visible, hidden} = this.tabs;
+ let index = visible.indexOf(tab);
+
+ if (index > -1) {
+ visible.splice(index, 1);
+ hidden.push(tab);
+ } else {
+ throw new Error("restore queue: visible tab not found");
+ }
+ }
+};
+
+// A map storing a closed window's state data until it goes aways (is GC'ed).
+// This ensures that API clients can still read (but not write) states of
+// windows they still hold a reference to but we don't.
+var DyingWindowCache = {
+ _data: new WeakMap(),
+
+ has: function(window) {
+ return this._data.has(window);
+ },
+
+ get: function(window) {
+ return this._data.get(window);
+ },
+
+ set: function(window, data) {
+ this._data.set(window, data);
+ },
+
+ remove: function(window) {
+ this._data.delete(window);
+ }
+};
+
+// A set of tab attributes to persist. We will read a given list of tab
+// attributes when collecting tab data and will re-set those attributes when
+// the given tab data is restored to a new tab.
+var TabAttributes = {
+ _attrs: new Set(),
+
+ // We never want to directly read or write those attributes.
+ // 'image' should not be accessed directly but handled by using the
+ // gBrowser.getIcon()/setIcon() methods.
+ // 'pending' is used internal by sessionstore and managed accordingly.
+ // 'skipbackgroundnotify' is used internal by tabbrowser.xml.
+ _skipAttrs: new Set(["image", "pending", "skipbackgroundnotify"]),
+
+ persist: function(name) {
+ if (this._attrs.has(name) || this._skipAttrs.has(name)) {
+ return false;
+ }
+
+ this._attrs.add(name);
+ return true;
+ },
+
+ get: function(tab) {
+ let data = {};
+
+ for (let name of this._attrs) {
+ if (tab.hasAttribute(name)) {
+ data[name] = tab.getAttribute(name);
+ }
+ }
+
+ return data;
+ },
+
+ set: function(tab, data = {}) {
+ // Clear attributes.
+ for (let name of this._attrs) {
+ tab.removeAttribute(name);
+ }
+
+ // Set attributes.
+ for (let name in data) {
+ tab.setAttribute(name, data[name]);
+ }
+ }
+};
+
+// This is used to help meter the number of restoring tabs. This is the control
+// point for telling the next tab to restore. It gets attached to each gBrowser
+// via gBrowser.addTabsProgressListener
+var gRestoreTabsProgressListener = {
+ onStateChange: function(aBrowser, aWebProgress, aRequest, aStateFlags, aStatus) {
+ // Ignore state changes on browsers that we've already restored and state
+ // changes that aren't applicable.
+ if (aBrowser.__SS_restoreState &&
+ aBrowser.__SS_restoreState == TAB_STATE_RESTORING &&
+ aStateFlags & Ci.nsIWebProgressListener.STATE_STOP &&
+ aStateFlags & Ci.nsIWebProgressListener.STATE_IS_NETWORK &&
+ aStateFlags & Ci.nsIWebProgressListener.STATE_IS_WINDOW) {
+ // We need to reset the tab before starting the next restore.
+ let win = aBrowser.ownerDocument.defaultView;
+ let tab = win.gBrowser.getTabForBrowser(aBrowser);
+ SessionStoreInternal._resetTabRestoringState(tab);
+ SessionStoreInternal.restoreNextTab();
+ }
+ }
+};
+
+// A SessionStoreSHistoryListener will be attached to each browser before it is
+// restored. We need to catch reloads that occur before the tab is restored
+// because otherwise, docShell will reload an old URI (usually about:blank).
+function SessionStoreSHistoryListener(aTab) {
+ this.tab = aTab;
+}
+SessionStoreSHistoryListener.prototype = {
+ QueryInterface: XPCOMUtils.generateQI([
+ Ci.nsISHistoryListener,
+ Ci.nsISupportsWeakReference
+ ]),
+ browser: null,
+ OnHistoryNewEntry: function(aNewURI) { },
+ OnHistoryGoBack: function(aBackURI) { return true; },
+ OnHistoryGoForward: function(aForwardURI) { return true; },
+ OnHistoryGotoIndex: function(aIndex, aGotoURI) { return true; },
+ OnHistoryPurge: function(aNumEntries) { return true; },
+ OnHistoryReload: function(aReloadURI, aReloadFlags) {
+ // On reload, we want to make sure that session history loads the right
+ // URI. In order to do that, we will juet call restoreTab. That will remove
+ // the history listener and load the right URI.
+ SessionStoreInternal.restoreTab(this.tab);
+ // Returning false will stop the load that docshell is attempting.
+ return false;
+ }
+}
+
+// See toolkit/forgetaboutsite/ForgetAboutSite.jsm
+String.prototype.hasRootDomain = function hasRootDomain(aDomain) {
+ let index = this.indexOf(aDomain);
+ if (index == -1)
+ return false;
+
+ if (this == aDomain)
+ return true;
+
+ let prevChar = this[index - 1];
+ return (index == (this.length - aDomain.length)) &&
+ (prevChar == "." || prevChar == "/");
+}
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-09 16:53:48 +0000