Makes the tab restore service persist closed tabs/windows to disk and

reload them when asked.

Sorry for largish looking change. It's made big by refactoring common
code between TabRestoreService and SessionService into a common
superclass. At the same time I removed some dead code and shuffled the
session related classes into a single directory for easier perusal.

BUG=384
TEST=close the browser, start the browser and make sure the new tab
     page shows closed windows/tabs from the previous session.

Review URL: http://codereview.chromium.org/13152

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@6490 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 55 insertions, 0 deletions

diff --git a/chrome/browser/sessions/session_restore.h b/chrome/browser/sessions/session_restore.h
new file mode 100644
index 0000000..eb44d9a
--- /dev/null
+++ b/chrome/browser/sessions/session_restore.h
@@ -0,0 +1,55 @@
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_SESSIONS_SESSION_RESTORE_H_
+#define CHROME_BROWSER_SESSIONS_SESSION_RESTORE_H_
+
+#include <vector>
+
+#include "chrome/browser/history/history.h"
+#include "base/basictypes.h"
+
+class Browser;
+class Profile;
+
+// SessionRestore handles restoring either the last or saved session. Session
+// restore come in two variants, asynchronous or synchronous. The synchronous
+// variety is meant for startup, and blocks until restore is complete.
+class SessionRestore {
+ public:
+  // Asnchronously restores the specified session.
+  // If |browser| is non-null the tabs for the first window are added to it.
+  // If clobber_existing_window is true and there is an open browser window,
+  // it is closed after restoring.
+  // If always_create_tabbed_browser is true at least one tabbed browser is
+  // created. For example, if there is an error restoring, or the last session
+  // session is empty and always_create_tabbed_browser is true, a new empty
+  // tabbed browser is created.
+  //
+  // If urls_to_open is non-empty, a tab is added for each of the URLs.
+  static void RestoreSession(Profile* profile,
+                             Browser* browser,
+                             bool clobber_existing_window,
+                             bool always_create_tabbed_browser,
+                             const std::vector<GURL>& urls_to_open);
+
+  // Synchronously restores the last session. At least one tabbed browser is
+  // created, even if there is an error in restoring.
+  //
+  // If urls_to_open is non-empty, a tab is added for each of the URLs.
+  static void RestoreSessionSynchronously(
+      Profile* profile,
+      const std::vector<GURL>& urls_to_open);
+
+  // The max number of non-selected tabs SessionRestore loads when restoring
+  // a session. A value of 0 indicates all tabs are loaded at once.
+  static size_t num_tabs_to_load_;
+
+ private:
+  SessionRestore();
+
+  DISALLOW_COPY_AND_ASSIGN(SessionRestore);
+};
+
+#endif  // CHROME_BROWSER_SESSIONS_SESSION_RESTORE_H_