session_service.h | Explore in Territory

// Copyright 2012 The Chromium Authors
// 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_SERVICE_H_
#define CHROME_BROWSER_SESSIONS_SESSION_SERVICE_H_

#include <map>
#include <optional>
#include <string>

#include "base/callback_list.h"
#include "base/gtest_prod_util.h"
#include "base/memory/weak_ptr.h"
#include "chrome/browser/sessions/session_service_base.h"
#include "chrome/browser/ui/browser.h"
#include "components/sessions/core/command_storage_manager_delegate.h"
#include "components/tab_groups/tab_group_id.h"
#include "components/tab_groups/tab_group_visual_data.h"

class Profile;

namespace content {
class WebContents;
}  // namespace content

namespace sessions {
struct SessionWindow;
}  // namespace sessions

struct StartupTab;
StartupTabs;

// SessionService ------------------------------------------------------------

// SessionService is responsible for maintaining the state of open windows
// and tabs so that they can be restored at a later date. The state of the
// currently open browsers is referred to as the current session.
//
// SessionService supports restoring from the last session. The last session
// typically corresponds to the last run of the browser, but not always. For
// example, if the user has a tabbed browser and app window running, closes the
// tabbed browser, then creates a new tabbed browser the current session is made
// the last session and the current session reset. This is done to provide the
// illusion that app windows run in separate processes. Similar behavior occurs
// with incognito windows.
//
// SessionService itself uses functions from session_service_commands to store
// commands which can rebuild the open state of the browser (as |SessionWindow|,
// |SessionTab| and |SerializedNavigationEntry|). The commands are periodically
// flushed to |CommandStorageBackend| and written to a file. Every so often
// |SessionService| rebuilds the contents of the file from the open state of the
// browser.

// TODO([email protected]) When AppSessionService is implemented, we should
// make a pass in SessionService to remove app related code.
class SessionService : public SessionServiceBase { … };

#endif  // CHROME_BROWSER_SESSIONS_SESSION_SERVICE_H_
chromium/chrome/browser/sessions/session_service.h
