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-rw-r--r--browser/components/webextensions/ext-sessions.js92
1 files changed, 92 insertions, 0 deletions
diff --git a/browser/components/webextensions/ext-sessions.js b/browser/components/webextensions/ext-sessions.js
new file mode 100644
index 000000000..4c13a1ac3
--- /dev/null
+++ b/browser/components/webextensions/ext-sessions.js
@@ -0,0 +1,92 @@
+/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set sts=2 sw=2 et tw=80: */
+"use strict";
+
+Cu.import("resource://gre/modules/ExtensionUtils.jsm");
+var {
+ promiseObserved,
+} = ExtensionUtils;
+
+XPCOMUtils.defineLazyModuleGetter(this, "SessionStore",
+ "resource:///modules/sessionstore/SessionStore.jsm");
+
+function getRecentlyClosed(maxResults, extension) {
+ let recentlyClosed = [];
+
+ // Get closed windows
+ let closedWindowData = SessionStore.getClosedWindowData(false);
+ for (let window of closedWindowData) {
+ recentlyClosed.push({
+ lastModified: window.closedAt,
+ window: WindowManager.convertFromSessionStoreClosedData(window, extension)});
+ }
+
+ // Get closed tabs
+ for (let window of WindowListManager.browserWindows()) {
+ let closedTabData = SessionStore.getClosedTabData(window, false);
+ for (let tab of closedTabData) {
+ recentlyClosed.push({
+ lastModified: tab.closedAt,
+ tab: TabManager.for(extension).convertFromSessionStoreClosedData(tab, window)});
+ }
+ }
+
+ // Sort windows and tabs
+ recentlyClosed.sort((a, b) => b.lastModified - a.lastModified);
+ return recentlyClosed.slice(0, maxResults);
+}
+
+function createSession(restored, extension, sessionId) {
+ if (!restored) {
+ return Promise.reject({message: `Could not restore object using sessionId ${sessionId}.`});
+ }
+ let sessionObj = {lastModified: Date.now()};
+ if (restored instanceof Ci.nsIDOMChromeWindow) {
+ return promiseObserved("sessionstore-single-window-restored", subject => subject == restored).then(() => {
+ sessionObj.window = WindowManager.convert(extension, restored, {populate: true});
+ return Promise.resolve([sessionObj]);
+ });
+ }
+ sessionObj.tab = TabManager.for(extension).convert(restored);
+ return Promise.resolve([sessionObj]);
+}
+
+extensions.registerSchemaAPI("sessions", "addon_parent", context => {
+ let {extension} = context;
+ return {
+ sessions: {
+ getRecentlyClosed: function(filter) {
+ let maxResults = filter.maxResults == undefined ? this.MAX_SESSION_RESULTS : filter.maxResults;
+ return Promise.resolve(getRecentlyClosed(maxResults, extension));
+ },
+ restore: function(sessionId) {
+ let session, closedId;
+ if (sessionId) {
+ closedId = sessionId;
+ session = SessionStore.undoCloseById(closedId);
+ } else if (SessionStore.lastClosedObjectType == "window") {
+ // If the most recently closed object is a window, just undo closing the most recent window.
+ session = SessionStore.undoCloseWindow(0);
+ } else {
+ // It is a tab, and we cannot call SessionStore.undoCloseTab without a window,
+ // so we must find the tab in which case we can just use its closedId.
+ let recentlyClosedTabs = [];
+ for (let window of WindowListManager.browserWindows()) {
+ let closedTabData = SessionStore.getClosedTabData(window, false);
+ for (let tab of closedTabData) {
+ recentlyClosedTabs.push(tab);
+ }
+ }
+
+ // Sort the tabs.
+ recentlyClosedTabs.sort((a, b) => b.closedAt - a.closedAt);
+
+ // Use the closedId of the most recently closed tab to restore it.
+ closedId = recentlyClosedTabs[0].closedId;
+ session = SessionStore.undoCloseById(closedId);
+ }
+ return createSession(session, extension, closedId);
+ },
+ },
+ };
+});