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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., 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;
+}