nautilus-application.c 30.7 KB
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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
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/*
 *  Nautilus
 *
 *  Copyright (C) 1999, 2000 Red Hat, Inc.
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 *  Copyright (C) 2000, 2001 Eazel, Inc.
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 *
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 *  Nautilus is free software; you can redistribute it and/or
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 *  modify it under the terms of the GNU General Public License as
 *  published by the Free Software Foundation; either version 2 of the
 *  License, or (at your option) any later version.
 *
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 *  Nautilus is distributed in the hope that it will be useful,
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
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 *  along with this program; if not, write to the Free Software
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 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
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 *  Authors: Elliot Lee <sopwith@redhat.com>,
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 *           Darin Adler <darin@bentspoon.com>
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 *
 */

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#include <config.h>
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#include "nautilus-application.h"
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#include "file-manager/fm-desktop-icon-view.h"
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#include "file-manager/fm-icon-view.h"
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#include "file-manager/fm-list-view.h"
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#include "file-manager/fm-search-list-view.h"
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#include "nautilus-desktop-window.h"
#include "nautilus-first-time-druid.h"
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#include "nautilus-main.h"
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#include "nautilus-shell-interface.h"
#include "nautilus-shell.h"
#include <bonobo/bonobo-main.h>
#include <bonobo/bonobo-object.h>
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#include <dirent.h>
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#include <eel/eel-gtk-macros.h>
#include <eel/eel-stock-dialogs.h>
#include <eel/eel-string-list.h>
#include <eel/eel-string.h>
#include <eel/eel-vfs-extensions.h>
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#include <gtk/gtksignal.h>
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#include <libgnome/gnome-config.h>
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#include <libgnome/gnome-i18n.h>
#include <libgnome/gnome-util.h>
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#include <libgnomeui/gnome-client.h>
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#include <libgnomeui/gnome-messagebox.h>
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#include <libgnomeui/gnome-stock-icons.h>
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#include <libgnomevfs/gnome-vfs-mime-handlers.h>
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#include <libgnomevfs/gnome-vfs-ops.h>
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#include <libgnomevfs/gnome-vfs-utils.h>
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#include <libnautilus-private/nautilus-file-utilities.h>
#include <libnautilus-private/nautilus-global-preferences.h>
#include <libnautilus-private/nautilus-icon-factory.h>
#include <libnautilus-private/nautilus-metafile-factory.h>
#include <libnautilus-private/nautilus-sound.h>
#include <libnautilus-private/nautilus-undo-manager.h>
#include <libnautilus-private/nautilus-volume-monitor.h>
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#include <libnautilus-private/nautilus-authn-manager.h>
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#include <bonobo-activation/bonobo-activation.h>
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/* Needed for the is_kdesktop_present check */
#include <gdk/gdkx.h>
#include <X11/Xlib.h>

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#define FACTORY_IID	     "OAFIID:nautilus_factory:bd1e1862-92d7-4391-963e-37583f0daef3"
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#define SEARCH_LIST_VIEW_IID "OAFIID:nautilus_file_manager_search_list_view:b186e381-198e-43cf-9c46-60b6bb35db0b"
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#define SHELL_IID	     "OAFIID:nautilus_shell:cd5183b2-3913-4b74-9b8e-10528b0de08d"
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/* Keeps track of the one and only desktop window. */
static NautilusDesktopWindow *nautilus_application_desktop_window;

/* Keeps track of all the nautilus windows. */
static GList *nautilus_application_window_list;

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static gboolean need_to_show_first_time_druid     (void);
static void     desktop_changed_callback          (gpointer                  user_data);
static void     desktop_location_changed_callback (gpointer                  user_data);
static void     volume_mounted_callback           (NautilusVolumeMonitor    *monitor,
						   NautilusVolume           *volume,
						   NautilusApplication      *application);
static void     volume_unmounted_callback         (NautilusVolumeMonitor    *monitor,
						   NautilusVolume           *volume,
						   NautilusApplication      *application);
static void     update_session                    (gpointer                  callback_data);
static void     init_session                      (void);
static gboolean is_kdesktop_present               (void);

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BONOBO_CLASS_BOILERPLATE (NautilusApplication, nautilus_application,
			  BonoboGenericFactory, BONOBO_GENERIC_FACTORY_TYPE)
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static CORBA_Object
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create_object (PortableServer_Servant servant,
	       const CORBA_char *iid,
	       CORBA_Environment *ev)
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{
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	BonoboObject *object;
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	FMDirectoryView *directory_view;
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	NautilusApplication *application;
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	if (strcmp (iid, NAUTILUS_ICON_VIEW_IID) == 0) {
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		directory_view = FM_DIRECTORY_VIEW (g_object_new (fm_icon_view_get_type (), NULL));
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		object = BONOBO_OBJECT (fm_directory_view_get_nautilus_view (directory_view));
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	} else if (strcmp (iid, NAUTILUS_DESKTOP_ICON_VIEW_IID) == 0) {
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		directory_view = FM_DIRECTORY_VIEW (g_object_new (fm_desktop_icon_view_get_type (), NULL));
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		object = BONOBO_OBJECT (fm_directory_view_get_nautilus_view (directory_view));
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	} else if (strcmp (iid, NAUTILUS_LIST_VIEW_IID) == 0) {
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		directory_view = FM_DIRECTORY_VIEW (g_object_new (fm_list_view_get_type (), NULL));
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		object = BONOBO_OBJECT (fm_directory_view_get_nautilus_view (directory_view));
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#if GNOME2_CONVERSION_COMPLETE
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	} else if (strcmp (iid, SEARCH_LIST_VIEW_IID) == 0) {
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		directory_view = FM_DIRECTORY_VIEW (g_object_new (fm_search_list_view_get_type (), NULL));
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		object = BONOBO_OBJECT (fm_directory_view_get_nautilus_view (directory_view));
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#endif
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	} else if (strcmp (iid, SHELL_IID) == 0) {
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		application = NAUTILUS_APPLICATION (bonobo_object_from_servant (servant));
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		object = BONOBO_OBJECT (nautilus_shell_new (application));
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	} else if (strcmp (iid, METAFILE_FACTORY_IID) == 0) {
		object = BONOBO_OBJECT (nautilus_metafile_factory_get_instance ());
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	} else {
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		return CORBA_OBJECT_NIL;
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	}
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	return CORBA_Object_duplicate (bonobo_object_corba_objref (object), ev);
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}

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GList *
nautilus_application_get_window_list (void)
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{
	return nautilus_application_window_list;
}

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static void
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nautilus_application_instance_init (NautilusApplication *application)
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{
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	/* Create an undo manager */
	application->undo_manager = nautilus_undo_manager_new ();
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	/* Watch for volume mounts so we can restore open windows */
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	g_signal_connect (nautilus_volume_monitor_get (),
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			    "volume_mounted",
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			    G_CALLBACK (volume_mounted_callback),
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			    application);

	/* Watch for volume unmounts so we can close open windows */
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	g_signal_connect (nautilus_volume_monitor_get (),
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			    "volume_unmounted",
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			    G_CALLBACK (volume_unmounted_callback),
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			    application);
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}

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NautilusApplication *
nautilus_application_new (void)
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{
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	NautilusApplication *application;

	application = g_object_new (NAUTILUS_TYPE_APPLICATION, NULL);
	
	bonobo_generic_factory_construct_noreg (BONOBO_GENERIC_FACTORY (application),
						FACTORY_IID,
						NULL);
	
	return application;
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}

static void
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nautilus_application_destroy (BonoboObject *object)
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{
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	NautilusApplication *application;

	application = NAUTILUS_APPLICATION (object);

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	nautilus_bookmarks_exiting ();
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	bonobo_object_unref (BONOBO_OBJECT (application->undo_manager));

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	EEL_CALL_PARENT (BONOBO_OBJECT_CLASS, destroy, (object));
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}
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static gboolean
check_required_directories (NautilusApplication *application)
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{
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	char *user_directory;
	char *desktop_directory;
	EelStringList *directories;
	char *directories_as_string;
	char *error_string;
	char *dialog_title;
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	GtkDialog *dialog;
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	int failed_count;
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	g_assert (NAUTILUS_IS_APPLICATION (application));
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	user_directory = nautilus_get_user_directory ();
	desktop_directory = nautilus_get_desktop_directory ();

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	directories = eel_string_list_new (TRUE);
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	if (!g_file_test (user_directory, G_FILE_TEST_IS_DIR)) {
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		eel_string_list_insert (directories, user_directory);
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	}
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	g_free (user_directory);	    
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	if (!g_file_test (desktop_directory, G_FILE_TEST_IS_DIR)) {
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		eel_string_list_insert (directories, desktop_directory);
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	}
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	g_free (desktop_directory);
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	failed_count = eel_string_list_get_length (directories);
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	if (failed_count != 0) {
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		directories_as_string = eel_string_list_as_string (directories, "\n", EEL_STRING_LIST_ALL_STRINGS);
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		if (failed_count == 1) {
			dialog_title = g_strdup (_("Couldn't Create Required Folder"));
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			error_string = g_strdup_printf (_("Nautilus could not create the required folder \"%s\". "
							  "Before running Nautilus, please create this folder, or "
							  "set permissions such that Nautilus can create it."),
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							directories_as_string);
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		} else {
			dialog_title = g_strdup (_("Couldn't Create Required Folders"));
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			error_string = g_strdup_printf (_("Nautilus could not create the following required folders:\n\n"
							  "%s\n\n"
							  "Before running Nautilus, please create these folders, or "
							  "set permissions such that Nautilus can create them."),
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							directories_as_string);
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		}
		
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		dialog = eel_show_error_dialog (error_string, dialog_title, NULL);
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		/* We need the main event loop so the user has a chance to see the dialog. */
		nautilus_main_event_loop_register (GTK_OBJECT (dialog));
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		g_free (directories_as_string);
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		g_free (error_string);
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		g_free (dialog_title);
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	}

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	eel_string_list_free (directories);
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	return failed_count == 0;
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}

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static int
nautilus_strv_length (const char * const *strv)
{
	const char * const *p;

	for (p = strv; *p != NULL; p++) { }
	return p - strv;
}

static Nautilus_URIList *
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nautilus_make_uri_list_from_shell_strv (const char * const *strv)
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{
	int length, i;
	Nautilus_URIList *uri_list;
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	char *translated_uri;
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	length = nautilus_strv_length (strv);

	uri_list = Nautilus_URIList__alloc ();
	uri_list->_maximum = length;
	uri_list->_length = length;
	uri_list->_buffer = CORBA_sequence_Nautilus_URI_allocbuf (length);
	for (i = 0; i < length; i++) {
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		translated_uri = eel_make_uri_from_shell_arg (strv[i]);
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		uri_list->_buffer[i] = CORBA_string_dup (translated_uri);
		g_free (translated_uri);
		translated_uri = NULL;
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	}
	CORBA_sequence_set_release (uri_list, CORBA_TRUE);

	return uri_list;
}

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/* Find ~/.gnome-desktop/Trash and rename it to ~/.gnome-desktop/Trash.gmc
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 * Only if it is a directory
 */
static void
migrate_gmc_trash (void)
{
	char *dp, *trash_dir, *dest;
	struct stat buf;

	dp = nautilus_get_desktop_directory ();
	trash_dir = g_strconcat (dp, "/", "Trash", NULL);
	dest = g_strconcat (dp, "/", "Trash.gmc", NULL);
	
	if (stat (trash_dir, &buf) == 0 && S_ISDIR (buf.st_mode)) {
		rename (trash_dir, dest);
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#if GNOME2_CONVERSION_COMPLETE
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		gnome_metadata_rename (trash_dir, dest);
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#endif
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	}
	
	g_free (dp);
	g_free (trash_dir);
	g_free (dest);
}

static void
migrate_old_nautilus_files (void)
{
	char *new_desktop_dir, *np;
	char *old_desktop_dir, *op;
	char *old_desktop_dir_new_name;
	struct stat buf;
	DIR *dir;
	struct dirent *de;
	
	old_desktop_dir = g_strconcat (g_get_home_dir (), "/.nautilus/desktop", NULL);
	if (stat (old_desktop_dir, &buf) == -1) {
		g_free (old_desktop_dir);
		return;
	}
	if (!S_ISLNK (buf.st_mode)){
		dir = opendir (old_desktop_dir);
		if (dir == NULL) {
			g_free (old_desktop_dir);
			return;
		}
	
		new_desktop_dir = nautilus_get_desktop_directory ();
		
		while ((de = readdir (dir)) != NULL){
			if (de->d_name [0] == '.'){
				if (de->d_name [0] == 0)
					continue;
				
				if (de->d_name [1] == '.' && de->d_name [2] == 0)
					continue;
			}
	
			op = g_strconcat (old_desktop_dir, "/", de->d_name, NULL);
			np = g_strconcat (new_desktop_dir, "/", de->d_name, NULL);
	
			rename (op, np);
	
			g_free (op);
			g_free (np);
		}

		closedir (dir);

		g_free (new_desktop_dir);
	}

	/* In case we miss something */
	old_desktop_dir_new_name = g_strconcat (old_desktop_dir, "-old", NULL);
	rename (old_desktop_dir, old_desktop_dir_new_name);
	g_free (old_desktop_dir_new_name);

	g_free (old_desktop_dir);
}

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static gint
create_starthere_link_callback (gpointer data)
{
	char *desktop_path;
	char *desktop_link_file;
	char *cmd;
	
	/* Create default services icon on the desktop */
	desktop_path = nautilus_get_desktop_directory ();
	desktop_link_file = nautilus_make_path (desktop_path,
						"starthere.desktop");

	cmd = g_strconcat ("/bin/cp ",
			   NAUTILUS_DATADIR,
			   "/starthere-link.desktop ",
			   desktop_link_file,
			   NULL);

	if (system (cmd) != 0) {
		g_warning ("Failed to execute command '%s'\n", cmd);
	}
	
	g_free (desktop_path);
	g_free (desktop_link_file);
	g_free (cmd);
	
	return FALSE;
}

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static void
finish_startup (NautilusApplication *application)
{
	/* initialize the sound machinery */
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	nautilus_sound_init ();
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	/* initialize URI authentication manager */
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	nautilus_authentication_manager_init ();
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	/* Make the desktop work with gmc and old Nautilus. */
	migrate_gmc_trash ();
	migrate_old_nautilus_files ();
}

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void
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nautilus_application_startup (NautilusApplication *application,
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			      gboolean kill_shell,
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			      gboolean restart_shell,
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			      gboolean no_default_window,
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			      gboolean no_desktop,
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			      gboolean do_first_time_druid_check,
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			      const char *geometry,
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			      const char *urls[])
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{
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	CORBA_Environment ev;
	Nautilus_Shell shell;
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	Bonobo_RegistrationResult result;
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	const char *message, *detailed_message;
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	GtkDialog *dialog;
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	Nautilus_URIList *url_list;
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	const CORBA_char *corba_geometry;
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	int num_failures;

	num_failures = 0;
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	/* Check the user's ~/.nautilus directories and post warnings
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	 * if there are problems.
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	 */
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	if (!kill_shell && !check_required_directories (application)) {
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		return;
	}
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	/* Run the first time startup druid if needed. */
	if (do_first_time_druid_check && need_to_show_first_time_druid ()) {
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		/* Do this at idle time, once nautilus has initialized
		 * itself. Otherwise we may spawn a second nautilus
		 * process when looking for a metadata factory..
		 */
		g_idle_add (create_starthere_link_callback, NULL);
		nautilus_set_first_time_file_flag ();
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	}
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	CORBA_exception_init (&ev);

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	/* Start up the factory. */
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	while (TRUE) {
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		/* Try to register the file manager view factory. */
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		result = bonobo_activation_active_server_register
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			(FACTORY_IID,
			 bonobo_object_corba_objref (BONOBO_OBJECT (application)));
		switch (result) {
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		case Bonobo_ACTIVATION_REG_SUCCESS:
			/* We are registered and all is right with the world. */
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			finish_startup (application);
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		case Bonobo_ACTIVATION_REG_ALREADY_ACTIVE:
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			/* Another copy of nautilus already is running and registered. */
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			message = NULL;
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			detailed_message = NULL;
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			break;
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		case Bonobo_ACTIVATION_REG_NOT_LISTED:
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			/* Can't register myself due to trouble locating the
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			 * Nautilus_Shell.server file. This has happened when you
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			 * launch Nautilus with an LD_LIBRARY_PATH that
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			 * doesn't include the directory containing the oaf
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			 * library. It could also happen if the
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			 * Nautilus_Shell.server file was not present for some
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			 * reason. Sometimes killing oafd and gconfd fixes
			 * this problem but we don't exactly understand why,
			 * since neither of the above causes explain it.
			 */
			message = _("Nautilus can't be used now. "
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				    "Running the command \"bonobo-slay\""
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				    " from the console may fix the problem. If not,"
				    " you can try rebooting the computer or"
				    " installing Nautilus again.");
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			/* FIXME bugzilla.gnome.org 42536: The guesses and stuff here are lame. */
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			detailed_message = _("Nautilus can't be used now. "
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					     "Running the command \"bonobo-slay\" "
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					     "from the console may fix the problem. If not, "
					     "you can try rebooting the computer or "
					     "installing Nautilus again.\n\n"
					     "Bonobo couldn't locate the Nautilus_shell.server file. "
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					     "One cause of this seems to be an LD_LIBRARY_PATH "
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					     "that does not include the bonobo-activation library's directory. "
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					     "Another possible cause would be bad install "
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					     "with a missing Nautilus_Shell.server file.\n\n"
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					     "Running \"bonobo-slay\" will kill all "
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					     "Bonobo Activation and GConf processes, which may be needed by "
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					     "other applications.\n\n"
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					     "Sometimes killing bonobo-activation-server and gconfd fixes "
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					     "the problem, but we don't know why.\n\n"
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					     "We have also seen this error when a faulty "
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					     "version of bonobo-activation was installed.");
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			break;
		default:
			/* This should never happen. */
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			g_warning ("bad error code from bonobo_activation_active_server_register");
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		case Bonobo_ACTIVATION_REG_ERROR:
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			/* Some misc. error (can never happen with current
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			 * version of bonobo-activation). Show dialog and terminate the
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			 * program.
			 */
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			/* FIXME bugzilla.gnome.org 42537: Looks like this does happen with the
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			 * current OAF. I guess I read the code wrong. Need to figure out when and make a
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			 * good message.
			 */
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			message = _("Nautilus can't be used now, due to an unexpected error.");
			detailed_message = _("Nautilus can't be used now, due to an unexpected error "
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					     "from Bonobo when attempting to register the file manager view server.");
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			break;
		}
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		/* Get the shell object. */
		if (message == NULL) {
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			shell = bonobo_activation_activate_from_id (SHELL_IID, 0, NULL, NULL);
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			if (!CORBA_Object_is_nil (shell, &ev)) {
				break;
			}

			/* If we couldn't find ourselves it's a bad problem so
			 * we better stop looping.
			 */
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			if (result == Bonobo_ACTIVATION_REG_SUCCESS) {
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				/* FIXME bugzilla.gnome.org 42538: When can this happen? */
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				message = _("Nautilus can't be used now, due to an unexpected error.");
				detailed_message = _("Nautilus can't be used now, due to an unexpected error "
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						     "from Bonobo when attempting to locate the factory."
						     "Killing bonobo-activation-server and restarting Nautilus may help fix the problem.");
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			} else {
				num_failures++;
				if (num_failures > 20) {
					message = _("Nautilus can't be used now, due to an unexpected error.");
					detailed_message = _("Nautilus can't be used now, due to an unexpected error "
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							     "from Bonobo when attempting to locate the shell object. "
							     "Killing bonobo-activation-server and restarting Nautilus may help fix the problem.");
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				}
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			}
		}

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		if (message != NULL) {
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			dialog = eel_show_error_dialog_with_details (message, NULL, detailed_message, NULL);
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			/* We need the main event loop so the user has a chance to see the dialog. */
			nautilus_main_event_loop_register (GTK_OBJECT (dialog));
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			goto out;
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		}
	}

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	if (kill_shell) {
		Nautilus_Shell_quit (shell, &ev);
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	} else if (restart_shell) {
		Nautilus_Shell_restart (shell, &ev);
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	} else {
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		/* If KDE desktop is running, then force no_desktop */
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		if (is_kdesktop_present ()) {
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			no_desktop = TRUE;
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		}
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		if (!no_desktop && eel_preferences_get_boolean (NAUTILUS_PREFERENCES_SHOW_DESKTOP)) {
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			Nautilus_Shell_start_desktop (shell, &ev);
		}
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		/* Monitor the preference to show or hide the desktop */
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		eel_preferences_add_callback_while_alive (NAUTILUS_PREFERENCES_SHOW_DESKTOP,
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							  desktop_changed_callback,
							  application,
							  G_OBJECT (application));
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		/* Monitor the preference to have the desktop */
		/* point to the Unix home folder */
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		eel_preferences_add_callback_while_alive (NAUTILUS_PREFERENCES_DESKTOP_IS_HOME_DIR,
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							  desktop_location_changed_callback,
							  NULL,
							  G_OBJECT (application));
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		/* CORBA C mapping doesn't allow NULL to be passed
		   for string parameters */
		corba_geometry = (geometry != NULL) ? geometry : "";

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	  	/* Create the other windows. */
		if (urls != NULL) {
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			url_list = nautilus_make_uri_list_from_shell_strv (urls);
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			Nautilus_Shell_open_windows (shell, url_list, corba_geometry, &ev);
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			CORBA_free (url_list);
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		} else if (!no_default_window) {
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			Nautilus_Shell_open_default_window (shell, corba_geometry, &ev);
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		}
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		/* Add ourselves to the session */
		init_session ();
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	}
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	/* We're done with the shell now, so let it go. */
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	/* HACK: Don't bother releasing the shell in the case where we
	 * just told it to quit -- that just leads to hangs and does
	 * no good. We could probably fix this in some fancier way if
	 * we could figure out a better lifetime rule.
	 */
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	if (!(kill_shell || restart_shell)) {
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		bonobo_object_release_unref (shell, NULL);
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	}
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	CORBA_exception_free (&ev);
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}

static void
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nautilus_application_create_desktop_window (NautilusApplication *application)
{
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	g_return_if_fail (nautilus_application_desktop_window == NULL);
	g_return_if_fail (NAUTILUS_IS_APPLICATION (application));
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	nautilus_application_desktop_window = nautilus_desktop_window_new (application);
	gtk_widget_show (GTK_WIDGET (nautilus_application_desktop_window));
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}

void
nautilus_application_open_desktop (NautilusApplication *application)
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{
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	if (nautilus_application_desktop_window == NULL) {
		nautilus_application_create_desktop_window (application);
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	}
}

void
nautilus_application_close_desktop (void)
{
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	if (nautilus_application_desktop_window != NULL) {
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		gtk_widget_destroy (GTK_WIDGET (nautilus_application_desktop_window));
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		nautilus_application_desktop_window = NULL;
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	}
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}

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void
nautilus_application_close_all_windows (void)
{
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	while (nautilus_application_window_list != NULL) {
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		nautilus_window_close (NAUTILUS_WINDOW (nautilus_application_window_list->data));
	}
}

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static void
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nautilus_application_destroyed_window (GtkObject *object, NautilusApplication *application)
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{
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	nautilus_application_window_list = g_list_remove (nautilus_application_window_list, object);
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}

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static gboolean
nautilus_window_delete_event_callback (GtkWidget *widget,
				       GdkEvent *event,
				       gpointer user_data)
{
	NautilusWindow *window;

	window = NAUTILUS_WINDOW (widget);
	nautilus_window_close (window);

	return TRUE;
}				       

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NautilusWindow *
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nautilus_application_create_window (NautilusApplication *application)
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{
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	NautilusWindow *window;
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	g_return_val_if_fail (NAUTILUS_IS_APPLICATION (application), NULL);
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	window = NAUTILUS_WINDOW (gtk_widget_new (nautilus_window_get_type (),
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						  "app", G_OBJECT (application),
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						  "app_id", "nautilus", NULL));
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	g_signal_connect (window, 
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			    "delete_event", G_CALLBACK (nautilus_window_delete_event_callback),
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                    	    NULL);

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	g_signal_connect (window,
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			    "destroy", G_CALLBACK (nautilus_application_destroyed_window),
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			    application);

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	nautilus_application_window_list = g_list_prepend (nautilus_application_window_list, window);
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	/* Do not yet show the window. It will be shown later on if it can
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	 * successfully display its initial URI. Otherwise it will be destroyed
	 * without ever having seen the light of day.
	 */
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	return window;
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}
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/* callback for changing the directory the desktop points to */
static void
desktop_location_changed_callback (gpointer user_data)
{
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	if (nautilus_application_desktop_window != NULL) {
		nautilus_desktop_window_update_directory
			(nautilus_application_desktop_window);
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	}
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}

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/* callback for showing or hiding the desktop based on the user's preference */
static void
desktop_changed_callback (gpointer user_data)
{
	NautilusApplication *application;
	
	application = NAUTILUS_APPLICATION (user_data);
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	if ( eel_preferences_get_boolean (NAUTILUS_PREFERENCES_SHOW_DESKTOP)) {
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		nautilus_application_open_desktop (application);
	} else {
		nautilus_application_close_desktop ();
	}
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	/* Can't make this function just watch the preference
	 * itself changing since ordering is important
	 */
	update_session (gnome_master_client ());
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}

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/*
 * need_to_show_first_time_druid
 *
 * Determine whether Nautilus needs to show the first time druid.
 * 
 * Note that the flag file indicating whether the druid has been
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 * presented is: ~/.nautilus/first-time-flag.
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 *
 * Another alternative could be to use preferences to store this flag
 * However, there because of bug 1229 this is not yet possible.
 *
 * Also, for debugging purposes, it is convenient to have just one file
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 * to kill in order to test the startup druid:
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 *
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 * rm -f ~/.nautilus/first-time-flag
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 *
 * In order to accomplish the same thing with preferences, you would have
 * to either kill ALL your preferences or spend time digging in ~/.gconf
 * xml files finding the right one.
 */
static gboolean
need_to_show_first_time_druid (void)
{
	gboolean result;
	char *user_directory;
	char *druid_flag_file_name;
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	user_directory = nautilus_get_user_directory ();

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	druid_flag_file_name = g_strconcat (user_directory, "/first-time-flag", NULL);
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	result = !g_file_exists (druid_flag_file_name);	
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	g_free (druid_flag_file_name);

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	/* we changed the name of the flag for version 1.0, so we should
	 * check for and delete the old one, if the new one didn't exist 
	 */
	if (result) {
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		druid_flag_file_name = g_strconcat (user_directory, "/first-time-wizard-flag", NULL);
		unlink (druid_flag_file_name);
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		g_free (druid_flag_file_name);
	}
	g_free (user_directory); 
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	return result;
}
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static void
volume_mounted_callback (NautilusVolumeMonitor *monitor, NautilusVolume *volume,
			 NautilusApplication *application)
{
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	NautilusWindow *window;
	char *uri;
	
	if (volume == NULL || application == NULL) {
		return;
	}
	
	/* Open a window to the CD if the user has set that preference. */
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	if (nautilus_volume_get_device_type (volume) == NAUTILUS_DEVICE_CDROM_DRIVE
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		&& gnome_config_get_bool ("/magicdev/Options/do_fileman_window=true")) {		
		window = nautilus_application_create_window (application);
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		uri = gnome_vfs_get_uri_from_local_path (nautilus_volume_get_mount_path (volume));
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		nautilus_window_go_to (window, uri);
		g_free (uri);
	}
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}

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static gboolean
window_can_be_closed (NautilusWindow *window)
{
	if (!NAUTILUS_IS_DESKTOP_WINDOW (window)) {
		return TRUE;
	}
	
	return FALSE;
}

static gboolean
is_last_closable_window (NautilusWindow *window)
{
	GList *node, *window_list;
	
	window_list = nautilus_application_get_window_list ();
	
	for (node = window_list; node != NULL; node = node->next) {
		if (window != NAUTILUS_WINDOW (node->data) && window_can_be_closed (NAUTILUS_WINDOW (node->data))) {
			return FALSE;
		}
	}
	
	return TRUE;
}


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/* Called whenever a volume is unmounted. Check and see if there are any windows open
 * displaying contents on the volume. If there are, close them.
 * It would also be cool to save open window and position info.
 */
static void
volume_unmounted_callback (NautilusVolumeMonitor *monitor, NautilusVolume *volume,
			   NautilusApplication *application)
{
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	GList *window_list, *node, *close_list;
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	NautilusWindow *window;
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	char *uri;
	char *path;
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	close_list = NULL;
	
	/* Check and see if any of the open windows are displaying contents from the unmounted volume */
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	window_list = nautilus_application_get_window_list ();
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	/* Construct a list of windows to be closed. Do not add the non-closable windows to the list. */
	for (node = window_list; node != NULL; node = node->next) {
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		window = NAUTILUS_WINDOW (node->data);
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		if (window != NULL && window_can_be_closed (window)) {
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			uri = nautilus_window_get_location (window);
			path = gnome_vfs_get_local_path_from_uri (uri);
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			if (eel_str_has_prefix (path, nautilus_volume_get_mount_path (volume))) {
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				close_list = g_list_prepend (close_list, window);
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			}
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			g_free (path);
			g_free (uri);
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		}
	}
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	/* Handle the windows in the close list. */
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	for (node = close_list; node != NULL; node = node->next) {
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		window = NAUTILUS_WINDOW (node->data);
		if (is_last_closable_window (window)) {
			/* Don't close the last or only window. Try to redirect to the default home directory. */		 	
			nautilus_window_go_home (window);
		} else {
			nautilus_window_close (window);
		}
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	}