/* -*- Mode: IDL; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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/. */

#include "nsISupports.idl"

interface nsICmdLineService;

[scriptable, uuid(bc0cb41f-4924-4c69-a65b-e35225a8650f)]

interface nsIAppStartup : nsISupports
{
    /**
     * Create the hidden window.
     */
    void createHiddenWindow();

    /**
     * Destroys the hidden window. This will have no effect if the hidden window
     * has not yet been created.
     */
    void destroyHiddenWindow();

    /**
     * Runs an application event loop: normally the main event pump which
     * defines the lifetime of the application. If there are no windows open
     * and no outstanding calls to enterLastWindowClosingSurvivalArea this
     * method will exit immediately.
     *
     * @returnCode NS_SUCCESS_RESTART_APP
     *             This return code indicates that the application should be
     *             restarted because quit was called with the eRestart flag.

     * @returnCode NS_SUCCESS_RESTART_METRO_APP
     *             This return code indicates that the application should be
     *             restarted in metro because quit was called with the
     *             eRestartTouchEnviroment flag.
     */
    void run();

    /**
     * There are situations where all application windows will be
     * closed but we don't want to take this as a signal to quit the
     * app. Bracket the code where the last window could close with
     * these.
     */
    void enterLastWindowClosingSurvivalArea();
    void exitLastWindowClosingSurvivalArea();

    /**
     * Startup Crash Detection
     *
     * Keeps track of application startup begining and success using flags to
     * determine whether the application is crashing on startup.
     * When the number of crashes crosses the acceptable threshold, safe mode
     * or other repair procedures are performed.
     */

    /**
     * Whether automatic safe mode is necessary at this time.  This gets set
     * in trackStartupCrashBegin.
     *
     * @see trackStartupCrashBegin
     */
    readonly attribute boolean automaticSafeModeNecessary;

    /**
     * Restart the application in safe mode
     * @param aQuitMode
     *        This parameter modifies how the app is shutdown.
     * @see nsIAppStartup::quit
     */
    void restartInSafeMode(in uint32_t aQuitMode);

    /**
     * If the last startup crashed then increment a counter.
     * Set a flag so on next startup we can detect whether TrackStartupCrashEnd
     * was called (and therefore the application crashed).
     * @return whether safe mode is necessary
     */
    bool trackStartupCrashBegin();

    /**
     * We have succesfully started without crashing. Clear flags that were
     * tracking past crashes.
     */
    void trackStartupCrashEnd();

    /**
     * The following flags may be passed as the aMode parameter to the quit
     * method.  One and only one of the "Quit" flags must be specified.  The
     * eRestart flag may be bit-wise combined with one of the "Quit" flags to
     * cause the application to restart after it quits.
     */

    /**
     * Attempt to quit if all windows are closed.
     */
    const uint32_t eConsiderQuit = 0x01;

    /**
     * Try to close all windows, then quit if successful.
     */
    const uint32_t eAttemptQuit = 0x02;

    /**
     * Quit, damnit!
     */
    const uint32_t eForceQuit = 0x03;

    /**
     * Restart the application after quitting.  The application will be
     * restarted with the same profile and an empty command line.
     */
    const uint32_t eRestart = 0x10; 

    /**
     * When restarting attempt to start in the i386 architecture. Only supported
     * on OSX.
     */
    const uint32_t eRestarti386 = 0x20;

    /**
     * When restarting attempt to start in the x86_64 architecture. Only
     * supported on OSX.
     */
    const uint32_t eRestartx86_64 = 0x40;

    /**
     * Restart the application in a touch-optimized environment (such as Metro)
     * after quitting. The application will be restarted with the same profile
     * and an empty command line.
     */
    const uint32_t eRestartTouchEnvironment = 0x80;

    /**
     * Exit the event loop, and shut down the app.
     *
     * @param aMode
     *        This parameter modifies how the app is shutdown, and it is
     *        constructed from the constants defined above.
     */
    void quit(in uint32_t aMode);

    /**
     * True if the application is in the process of shutting down.
     */
    readonly attribute boolean shuttingDown;

    /**
     * True if the application is in the process of starting up.
     *
     * Startup is complete once all observers of final-ui-startup have returned.
     */
    readonly attribute boolean startingUp;

    /**
     * Mark the startup as completed.
     *
     * Called at the end of startup by nsAppRunner.
     */
    [noscript] void doneStartingUp();

    /**
     * True if the application is being restarted
     */
    readonly attribute boolean restarting;

    /**
     * True if this is the startup following restart, i.e. if the application
     * was restarted using quit(eRestart*).
     */
    readonly attribute boolean wasRestarted;

    /**
     * True if the application is being restarted in a touch-optimized
     * environment (such as Metro).
     */
    readonly attribute boolean restartingTouchEnvironment;

    /** 
     * Returns an object with main, process, firstPaint, sessionRestored properties.
     * Properties may not be available depending on platform or application
     */
    [implicit_jscontext] jsval getStartupInfo();

    /**
     * True if startup was interrupted by an interactive prompt.
     */
    attribute boolean interrupted;
};
