diff options
Diffstat (limited to 'cut-n-paste/smclient/eggsmclient-osx.c')
| -rw-r--r-- | cut-n-paste/smclient/eggsmclient-osx.c | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/cut-n-paste/smclient/eggsmclient-osx.c b/cut-n-paste/smclient/eggsmclient-osx.c new file mode 100644 index 00000000..5428c09f --- /dev/null +++ b/cut-n-paste/smclient/eggsmclient-osx.c @@ -0,0 +1,235 @@ +/* + * 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., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, 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 <gdk/gdkquartz.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; +} |