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/*
* Copyright (C) 2007 Novell, Inc.
* Copyright (C) 2008 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/* EggSMClientOSX
*
* For details on the OS X logout process, see:
* http://developer.apple.com/documentation/MacOSX/Conceptual/BPSystemStartup/Articles/BootProcess.html#//apple_ref/doc/uid/20002130-114618
*
* EggSMClientOSX registers for the kAEQuitApplication AppleEvent; the
* handler we register (quit_requested()) will be invoked from inside
* the quartz event-handling code (specifically, from inside
* [NSApplication nextEventMatchingMask]) when an AppleEvent arrives.
* We use AESuspendTheCurrentEvent() and AEResumeTheCurrentEvent() to
* allow asynchronous / non-main-loop-reentering processing of the
* quit request. (These are part of the Carbon framework; it doesn't
* seem to be possible to handle AppleEvents asynchronously from
* Cocoa.)
*/
#include "config.h"
#include "eggsmclient-private.h"
#include <glib.h>
#include <Carbon/Carbon.h>
#include <CoreServices/CoreServices.h>
#define EGG_TYPE_SM_CLIENT_OSX (egg_sm_client_osx_get_type ())
#define EGG_SM_CLIENT_OSX(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), EGG_TYPE_SM_CLIENT_OSX, EggSMClientOSX))
#define EGG_SM_CLIENT_OSX_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), EGG_TYPE_SM_CLIENT_OSX, EggSMClientOSXClass))
#define EGG_IS_SM_CLIENT_OSX(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), EGG_TYPE_SM_CLIENT_OSX))
#define EGG_IS_SM_CLIENT_OSX_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EGG_TYPE_SM_CLIENT_OSX))
#define EGG_SM_CLIENT_OSX_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), EGG_TYPE_SM_CLIENT_OSX, EggSMClientOSXClass))
typedef struct _EggSMClientOSX EggSMClientOSX;
typedef struct _EggSMClientOSXClass EggSMClientOSXClass;
struct _EggSMClientOSX {
EggSMClient parent;
AppleEvent quit_event, quit_reply;
gboolean quit_requested, quitting;
};
struct _EggSMClientOSXClass
{
EggSMClientClass parent_class;
};
static void sm_client_osx_startup (EggSMClient *client,
const char *client_id);
static void sm_client_osx_will_quit (EggSMClient *client,
gboolean will_quit);
static gboolean sm_client_osx_end_session (EggSMClient *client,
EggSMClientEndStyle style,
gboolean request_confirmation);
static pascal OSErr quit_requested (const AppleEvent *, AppleEvent *, long);
G_DEFINE_TYPE (EggSMClientOSX, egg_sm_client_osx, EGG_TYPE_SM_CLIENT)
static void
egg_sm_client_osx_init (EggSMClientOSX *osx)
{
;
}
static void
egg_sm_client_osx_class_init (EggSMClientOSXClass *klass)
{
EggSMClientClass *sm_client_class = EGG_SM_CLIENT_CLASS (klass);
sm_client_class->startup = sm_client_osx_startup;
sm_client_class->will_quit = sm_client_osx_will_quit;
sm_client_class->end_session = sm_client_osx_end_session;
}
EggSMClient *
egg_sm_client_osx_new (void)
{
return g_object_new (EGG_TYPE_SM_CLIENT_OSX, NULL);
}
static void
sm_client_osx_startup (EggSMClient *client,
const char *client_id)
{
AEInstallEventHandler (kCoreEventClass, kAEQuitApplication,
NewAEEventHandlerUPP (quit_requested),
(long)GPOINTER_TO_SIZE (client), false);
}
static gboolean
idle_quit_requested (gpointer client)
{
egg_sm_client_quit_requested (client);
return FALSE;
}
static pascal OSErr
quit_requested (const AppleEvent *aevt, AppleEvent *reply, long refcon)
{
EggSMClient *client = GSIZE_TO_POINTER ((gsize)refcon);
EggSMClientOSX *osx = GSIZE_TO_POINTER ((gsize)refcon);
g_return_val_if_fail (!osx->quit_requested, userCanceledErr);
/* FIXME AEInteractWithUser? */
osx->quit_requested = TRUE;
AEDuplicateDesc (aevt, &osx->quit_event);
AEDuplicateDesc (reply, &osx->quit_reply);
AESuspendTheCurrentEvent (aevt);
/* Don't emit the "quit_requested" signal immediately, since we're
* called from a weird point in the guts of gdkeventloop-quartz.c
*/
g_idle_add (idle_quit_requested, client);
return noErr;
}
static pascal OSErr
quit_requested_resumed (const AppleEvent *aevt, AppleEvent *reply, long refcon)
{
EggSMClientOSX *osx = GSIZE_TO_POINTER ((gsize)refcon);
osx->quit_requested = FALSE;
return osx->quitting ? noErr : userCanceledErr;
}
static gboolean
idle_will_quit (gpointer client)
{
EggSMClientOSX *osx = (EggSMClientOSX *)client;
/* Resume the event with a new handler that will return a value to
* the system.
*/
AEResumeTheCurrentEvent (&osx->quit_event, &osx->quit_reply,
NewAEEventHandlerUPP (quit_requested_resumed),
(long)GPOINTER_TO_SIZE (client));
AEDisposeDesc (&osx->quit_event);
AEDisposeDesc (&osx->quit_reply);
if (osx->quitting)
egg_sm_client_quit (client);
return FALSE;
}
static void
sm_client_osx_will_quit (EggSMClient *client,
gboolean will_quit)
{
EggSMClientOSX *osx = (EggSMClientOSX *)client;
g_return_if_fail (osx->quit_requested);
osx->quitting = will_quit;
/* Finish in an idle handler since the caller might have called
* egg_sm_client_will_quit() from inside the "quit_requested" signal
* handler, but may not expect the "quit" signal to arrive during
* the _will_quit() call.
*/
g_idle_add (idle_will_quit, client);
}
static gboolean
sm_client_osx_end_session (EggSMClient *client,
EggSMClientEndStyle style,
gboolean request_confirmation)
{
static const ProcessSerialNumber loginwindow_psn = { 0, kSystemProcess };
AppleEvent event = { typeNull, NULL }, reply = { typeNull, NULL };
AEAddressDesc target;
AEEventID id;
OSErr err;
switch (style)
{
case EGG_SM_CLIENT_END_SESSION_DEFAULT:
case EGG_SM_CLIENT_LOGOUT:
id = request_confirmation ? kAELogOut : kAEReallyLogOut;
break;
case EGG_SM_CLIENT_REBOOT:
id = request_confirmation ? kAEShowRestartDialog : kAERestart;
break;
case EGG_SM_CLIENT_SHUTDOWN:
id = request_confirmation ? kAEShowShutdownDialog : kAEShutDown;
break;
}
err = AECreateDesc (typeProcessSerialNumber, &loginwindow_psn,
sizeof (loginwindow_psn), &target);
if (err != noErr)
{
g_warning ("Could not create descriptor for loginwindow: %d", err);
return FALSE;
}
err = AECreateAppleEvent (kCoreEventClass, id, &target,
kAutoGenerateReturnID, kAnyTransactionID,
&event);
AEDisposeDesc (&target);
if (err != noErr)
{
g_warning ("Could not create logout AppleEvent: %d", err);
return FALSE;
}
err = AESend (&event, &reply, kAENoReply, kAENormalPriority,
kAEDefaultTimeout, NULL, NULL);
AEDisposeDesc (&event);
if (err == noErr)
AEDisposeDesc (&reply);
return err == noErr;
}
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