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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_BROWSER_LIFETIME_APPLICATION_LIFETIME_H_
      6 #define CHROME_BROWSER_LIFETIME_APPLICATION_LIFETIME_H_
      7 
      8 #include "base/compiler_specific.h"
      9 
     10 class Browser;
     11 
     12 namespace chrome {
     13 
     14 // Starts a user initiated exit process. Called from Browser::Exit.
     15 // On platforms other than ChromeOS, this is equivalent to
     16 // CloseAllBrowsers() On ChromeOS, this tells session manager
     17 // that chrome is signing out, which lets session manager send
     18 // SIGTERM to start actual exit process.
     19 void AttemptUserExit();
     20 
     21 // Starts to collect shutdown traces. On ChromeOS this will start immediately
     22 // on AttemptUserExit() and all other systems will start once all tabs are
     23 // closed.
     24 void StartShutdownTracing();
     25 
     26 // Starts a user initiated restart process. On platforms other than
     27 // chromeos, this sets a restart bit in the preference so that
     28 // chrome will be restarted at the end of shutdown process. On
     29 // ChromeOS, this simply exits the chrome, which lets sesssion
     30 // manager re-launch the browser with restore last session flag.
     31 void AttemptRestart();
     32 
     33 #if defined(OS_WIN)
     34 enum AshExecutionStatus {
     35   ASH_KEEP_RUNNING,
     36   ASH_TERMINATE,
     37 };
     38 
     39 // Helper function to activate the desktop from Ash mode. The
     40 // |ash_execution_status| parameter indicates if we should exit Ash after
     41 // activating desktop.
     42 void ActivateDesktopHelper(AshExecutionStatus ash_execution_status);
     43 
     44 // Windows 8 specific: Like AttemptRestart but if chrome is running
     45 // in desktop mode it starts in metro mode and vice-versa. The switching like
     46 // the restarting is controlled by a preference.
     47 void AttemptRestartWithModeSwitch();
     48 void AttemptRestartToDesktopMode();
     49 void AttemptRestartToMetroMode();
     50 #endif
     51 
     52 // Attempt to exit by closing all browsers.  This is equivalent to
     53 // CloseAllBrowsers() on platforms where the application exits
     54 // when no more windows are remaining. On other platforms (the Mac),
     55 // this will additionally exit the application if all browsers are
     56 // successfully closed.
     57 //  Note that he exit process may be interrupted by download or
     58 // unload handler, and the browser may or may not exit.
     59 void AttemptExit();
     60 
     61 #if defined(OS_CHROMEOS)
     62 // This is equivalent to AttemptUserExit, except that it always set
     63 // exit cleanly bit. ChromeOS checks if it can exit without user
     64 // interactions, so it will always exit the browser.  This is used to
     65 // handle SIGTERM on chromeos which is a signal to force shutdown
     66 // the chrome.
     67 void ExitCleanly();
     68 #endif
     69 
     70 // Closes all browsers and if successful, quits.
     71 void CloseAllBrowsersAndQuit();
     72 
     73 // Closes all browsers. If the session is ending the windows are closed
     74 // directly. Otherwise the windows are closed by way of posting a WM_CLOSE
     75 // message. This will quit the application if there is nothing other than
     76 // browser windows keeping it alive or the application is quitting.
     77 void CloseAllBrowsers();
     78 
     79 // Begins shutdown of the application when the desktop session is ending.
     80 void SessionEnding();
     81 
     82 // Tells the BrowserList to keep the application alive after the last Browser
     83 // closes. This is implemented as a count, so callers should pair their calls
     84 // to StartKeepAlive() with matching calls to EndKeepAlive() when they no
     85 // longer need to keep the application running.
     86 void StartKeepAlive();
     87 
     88 // Stops keeping the application alive after the last Browser is closed.
     89 // Should match a previous call to StartKeepAlive().
     90 void EndKeepAlive();
     91 
     92 // Returns true if application will continue running after the last Browser
     93 // closes.
     94 bool WillKeepAlive();
     95 
     96 // Emits APP_TERMINATING notification. It is guaranteed that the
     97 // notification is sent only once.
     98 void NotifyAppTerminating();
     99 
    100 // Send out notifications.
    101 // For ChromeOS, also request session manager to end the session.
    102 void NotifyAndTerminate(bool fast_path);
    103 
    104 // Called once the application is exiting.
    105 void OnAppExiting();
    106 
    107 // Called once the application is exiting to do any platform specific
    108 // processing required.
    109 void HandleAppExitingForPlatform();
    110 
    111 // Returns true if we can start the shutdown sequence for the browser, i.e. the
    112 // last browser window is being closed.
    113 bool ShouldStartShutdown(Browser* browser);
    114 
    115 }  // namespace chrome
    116 
    117 #endif  // CHROME_BROWSER_LIFETIME_APPLICATION_LIFETIME_H_
    118