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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* main.c
 *
 * Copyright (C) 2000  Ximian, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * This program 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * Author: Ettore Perazzoli
 */

#include <config.h>
#include <fcntl.h>
#include <glib.h>
#include <stdio.h>

#include <gtk/gtkalignment.h>
#include <gtk/gtkframe.h>
#include <gtk/gtklabel.h>
#include <gtk/gtkmain.h>
#include <gtk/gtksignal.h>
#include <gtk/gtkwindow.h>

#include <gdk/gdkx.h>
#include <X11/Xlib.h>

#include <libgnome/gnome-defs.h>
#include <libgnome/gnome-i18n.h>
#include <libgnome/gnome-util.h>
#include <libgnomeui/gnome-init.h>
#include <libgnomeui/gnome-stock.h>
#include <libgnomeui/gnome-window-icon.h>
#include <bonobo/bonobo-main.h>
#include <glade/glade.h>
#include <liboaf/liboaf.h>

#ifdef GTKHTML_HAVE_GCONF
#include <gconf/gconf.h>
#endif

#include <gal/widgets/e-gui-utils.h>
#include <gal/widgets/e-cursors.h>

#include "e-util/e-gtk-utils.h"

#include "e-icon-factory.h"
#include "e-shell-constants.h"
#include "e-shell-config.h"
#include "e-setup.h"

#include "e-shell.h"


static EShell *shell = NULL;
static char *evolution_directory = NULL;

/* Command-line options.  */
static gboolean no_splash = FALSE;
static gboolean start_online = FALSE;
static gboolean start_offline = FALSE;
extern char *evolution_debug_log;


static GtkWidget *
quit_box_new (void)
{
    GtkWidget *window;
    GtkWidget *label;
    GtkWidget *frame;

    window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
    gtk_window_set_policy (GTK_WINDOW (window), FALSE, FALSE, FALSE);
    gtk_window_set_position (GTK_WINDOW (window), GTK_WIN_POS_CENTER);

    /* (Just to prevent smart-ass window managers like Sawfish from setting
      the make the dialog as big as the standard Evolution window).  */
    gtk_window_set_wmclass (GTK_WINDOW (window), "evolution-quit", "Evolution:quit");

    e_make_widget_backing_stored (window);

    gtk_window_set_title (GTK_WINDOW (window), _("Evolution"));

    frame = gtk_frame_new (NULL);
    gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
    gtk_container_add (GTK_CONTAINER (window), frame);

    label = gtk_label_new (_("Evolution is now exiting ..."));
    gtk_misc_set_padding (GTK_MISC (label), 30, 25);

    gtk_container_add (GTK_CONTAINER (frame), label);

    gtk_widget_show_now (frame);
    gtk_widget_show_now (label);
    gtk_widget_show_now (window);

    /* For some reason, the window fails to update without this
       sometimes.  */
    gtk_widget_queue_draw (window);
    gtk_widget_queue_draw (label);
    gtk_widget_queue_draw (frame);

    gdk_flush ();

    while (gtk_events_pending ())
        gtk_main_iteration ();

    gdk_flush ();

    return window;
}

static void
quit_box_destroyed_callback (GtkObject *object,
                 void *data)
{
    GtkWidget **p;

    p = (GtkWidget **) data;
    *p = NULL;
}

static void
no_views_left_cb (EShell *shell, gpointer data)
{
    GtkWidget *quit_box;

    quit_box = quit_box_new ();
    gtk_signal_connect (GTK_OBJECT (quit_box), "destroy", quit_box_destroyed_callback, &quit_box);

    /* FIXME: This is wrong.  We should exit only when the shell is
       destroyed.  But refcounting is broken at present, so this is a
       reasonable workaround for now.  */

    e_shell_unregister_all (shell);

    /* FIXME: And this is another ugly hack.  We have a strange race
       condition that I cannot work around.  What happens is that the
       EShell object gets unreffed and its aggregate EActivityHandler gets
       destroyed too.  But for some reason, the EActivityHanlder GtkObject
       gets freed, while its CORBA object counterpart is still an active
       server.  So there is a slight chance that we receive CORBA
       invocation that act on an uninitialized object, and we crash.  (See
       #8615.) 

       The CORBA invocation on the dead object only happens because we
       ::unref the BonoboConf database server in the ::destroy method of
       the shell.  Since this is a CORBA call, it allows incoming CORBA
       calls to happen -- and these get invoked on the partially
       uninitialized object.

       Since I am not 100% sure what the reason for this half-stale object
       is, I am just going to make sure that no CORBA ops happen in
       ::destroy...  And this is achieved by placing this call here.  (If
       the DB is disconnected, there will be no ::unref of it in
       ::destroy.)  */

    e_shell_disconnect_db (shell);

    bonobo_object_unref (BONOBO_OBJECT (shell));

    if (quit_box != NULL)
        gtk_widget_destroy (quit_box);

    gtk_main_quit ();
}

static void
destroy_cb (GtkObject *object, gpointer data)
{
    gtk_main_quit ();
}


/* Warning dialog to scare people off a little bit.  */

static void
warning_dialog_clicked_callback (GnomeDialog *dialog,
                 int button_number,
                 void *data)
{
    GtkCheckButton *dont_bother_me_again_checkbox;
    Bonobo_ConfigDatabase config_db;

    dont_bother_me_again_checkbox = GTK_CHECK_BUTTON (data);
    config_db = e_shell_get_config_db (shell);

    bonobo_config_set_boolean (config_db, "/Shell/skip_warning_dialog_1_1",
                   gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (dont_bother_me_again_checkbox)),
                   NULL);

    gtk_widget_destroy (GTK_WIDGET (dialog));
}

static void
show_development_warning (GtkWindow *parent)
{
    GtkWidget *label;
    GtkWidget *warning_dialog;
    GtkWidget *dont_bother_me_again_checkbox;
    GtkWidget *alignment;
    Bonobo_ConfigDatabase config_db;
    
    config_db = e_shell_get_config_db (shell);
    if (bonobo_config_get_boolean_with_default (config_db, "/Shell/skip_warning_dialog_1_1", FALSE, NULL))
        return;

    warning_dialog = gnome_dialog_new ("Ximian Evolution " VERSION, GNOME_STOCK_BUTTON_OK, NULL);
    gtk_window_set_transient_for (GTK_WINDOW (warning_dialog), parent);

    label = gtk_label_new (
        /* xgettext:no-c-format */
        _("Hi.  Thanks for taking the time to download this preview release\n"
          "of the Ximian Evolution groupware suite.\n"
          "\n"
          "This version of Ximian Evolution is not yet complete. It's getting close,\n"
          "but some features are either unfinished or don't work properly.\n"
          "\n"
          "If you want a stable version of Evolution, we urge you to uninstall,\n"
          "this version, and install a 1.0.x version instead (1.0.5 recommended).\n"
          "\n"
          "If you find bugs, please report them to us at bugzilla.ximian.com.\n"
                  "This product comes with no warranty and is not intended for\n"
          "individuals prone to violent fits of anger.\n"
                  "\n"
          "We hope that you enjoy the results of our hard work, and we\n"
          "eagerly await your contributions!\n"
          ));
    gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);

    gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (warning_dialog)->vbox), 
                label, TRUE, TRUE, 4);

    label = gtk_label_new (
        _(
          "Thanks\n"
          "The Ximian Evolution Team\n"
          ));
    gtk_label_set_justify(GTK_LABEL(label), GTK_JUSTIFY_RIGHT);
    gtk_misc_set_alignment(GTK_MISC(label), 1, .5);

    gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (warning_dialog)->vbox), 
                label, TRUE, TRUE, 0);

    dont_bother_me_again_checkbox = gtk_check_button_new_with_label (_("Don't tell me again"));

    /* GTK sucks.  (Just so you know.)  */
    alignment = gtk_alignment_new (0.0, 0.0, 0.0, 0.0);

    gtk_container_add (GTK_CONTAINER (alignment), dont_bother_me_again_checkbox);
    gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (warning_dialog)->vbox),
                alignment, FALSE, FALSE, 0);

    gtk_widget_show_all (warning_dialog);

    gtk_signal_connect (GTK_OBJECT (warning_dialog), "clicked",
                GTK_SIGNAL_FUNC (warning_dialog_clicked_callback),
                dont_bother_me_again_checkbox);
}

/* The following signal handlers are used to display the development warning as
   soon as the first view is created.  */

static void
view_map_callback (GtkWidget *widget,
           void *data)
{
    gtk_signal_disconnect_by_func (GTK_OBJECT (widget),
                       GTK_SIGNAL_FUNC (view_map_callback),
                       data);

    show_development_warning (GTK_WINDOW (widget));
}

static void
new_view_created_callback (EShell *shell,
               EShellView *view,
               void *data)
{
    gtk_signal_disconnect_by_func (GTK_OBJECT (shell),
                       GTK_SIGNAL_FUNC (new_view_created_callback),
                       data);

    gtk_signal_connect (GTK_OBJECT (view), "map", view_map_callback, NULL);
}


/* This is for doing stuff that requires the GTK+ loop to be running already.  */

static gint
idle_cb (void *data)
{
    GSList *uri_list;
    GNOME_Evolution_Shell corba_shell;
    CORBA_Environment ev;
    EShellConstructResult result;
    EShellStartupLineMode startup_line_mode;
    GSList *p;
    gboolean have_evolution_uri;
    gboolean display_default;
    gboolean displayed_any;

    CORBA_exception_init (&ev);

    uri_list = (GSList *) data;

    if (! start_online && ! start_offline)
        startup_line_mode = E_SHELL_STARTUP_LINE_MODE_CONFIG;
    else if (start_online)
        startup_line_mode = E_SHELL_STARTUP_LINE_MODE_ONLINE;
    else
        startup_line_mode = E_SHELL_STARTUP_LINE_MODE_OFFLINE;

    shell = e_shell_new (evolution_directory, ! no_splash, startup_line_mode, &result);
    g_free (evolution_directory);

    switch (result) {
    case E_SHELL_CONSTRUCT_RESULT_OK:
        e_shell_config_factory_register (shell);

        gtk_signal_connect (GTK_OBJECT (shell), "no_views_left",
                    GTK_SIGNAL_FUNC (no_views_left_cb), NULL);
        gtk_signal_connect (GTK_OBJECT (shell), "destroy",
                    GTK_SIGNAL_FUNC (destroy_cb), NULL);

        if (!getenv ("EVOLVE_ME_HARDER"))
            gtk_signal_connect (GTK_OBJECT (shell), "new_view_created",
                        GTK_SIGNAL_FUNC (new_view_created_callback), NULL);

        corba_shell = bonobo_object_corba_objref (BONOBO_OBJECT (shell));
        corba_shell = CORBA_Object_duplicate (corba_shell, &ev);
        break;

    case E_SHELL_CONSTRUCT_RESULT_CANNOTREGISTER:
        corba_shell = oaf_activate_from_id (E_SHELL_OAFIID, 0, NULL, &ev);
        if (ev._major != CORBA_NO_EXCEPTION || corba_shell == CORBA_OBJECT_NIL) {
            e_notice (NULL, GNOME_MESSAGE_BOX_ERROR,
                  _("Cannot access the Ximian Evolution shell."));
            CORBA_exception_free (&ev);
            gtk_main_quit ();
            return FALSE;
        }
        break;

    default:
        e_notice (NULL, GNOME_MESSAGE_BOX_ERROR,
              _("Cannot initialize the Ximian Evolution shell: %s"),
              e_shell_construct_result_to_string (result));
        CORBA_exception_free (&ev);
        gtk_main_quit ();
        return FALSE;

    }

    have_evolution_uri = FALSE;
    for (p = uri_list; p != NULL; p = p->next) {
        const char *uri;

        uri = (const char *) p->data;
        if (strncmp (uri, E_SHELL_URI_PREFIX, E_SHELL_URI_PREFIX_LEN) == 0 ||
            strncmp (uri, E_SHELL_DEFAULTURI_PREFIX, E_SHELL_DEFAULTURI_PREFIX_LEN) == 0)
            have_evolution_uri = TRUE;
    }

    if (shell == NULL) {
        /* We're talking to a remote shell. If the user didn't
         * ask us to open any particular URI, then open another
         * view of the default URI
         */
        if (uri_list == NULL)
            display_default = TRUE;
        else
            display_default = FALSE;
    } else {
        /* We're starting a new shell. If the user didn't specify
         * any evolution: URIs to view, AND we can't load the
         * user's previous settings, then show the default URI.
         */
        if (! have_evolution_uri) {
            if (! e_shell_restore_from_settings (shell)) 
                display_default = TRUE;
            else
                display_default = FALSE;
        } else {
            display_default = FALSE;
        }
    }

    displayed_any = FALSE;
    for (p = uri_list; p != NULL; p = p->next) {
        const char *uri;

        uri = (const char *) p->data;
        GNOME_Evolution_Shell_handleURI (corba_shell, uri, &ev);
        if (ev._major == CORBA_NO_EXCEPTION)
            displayed_any = TRUE;
        else {
            g_warning ("CORBA exception %s when requesting URI -- %s", ev._repo_id, uri);
            CORBA_exception_free (&ev);
        }
    }

    g_slist_free (uri_list);

    if (display_default && ! displayed_any) {
        const char *uri;

        uri = E_SHELL_VIEW_DEFAULT_URI;
        GNOME_Evolution_Shell_handleURI (corba_shell, uri, &ev);
        if (ev._major != CORBA_NO_EXCEPTION)
            g_warning ("CORBA exception %s when requesting URI -- %s", ev._repo_id, uri);
    }

    CORBA_Object_release (corba_shell, &ev);

    CORBA_exception_free (&ev);
    
    if (shell == NULL)
        gtk_main_quit ();

    return FALSE;
}

int
main (int argc, char **argv)
{
    struct poptOption options[] = {
        { "no-splash", '\0', POPT_ARG_NONE, &no_splash, 0, N_("Disable splash screen"), NULL },
        { "offline", '\0', POPT_ARG_NONE, &start_offline, 0, N_("Start in offline mode"), NULL },
        { "online", '\0', POPT_ARG_NONE, &start_online, 0, N_("Start in online mode"), NULL },
        { "debug", '\0', POPT_ARG_STRING, &evolution_debug_log, 0, N_("Send the debugging output of all components to a file."), NULL },
        { NULL, '\0', POPT_ARG_INCLUDE_TABLE, &oaf_popt_options, 0, NULL, NULL },
        POPT_AUTOHELP
        { NULL, '\0', 0, NULL, 0, NULL, NULL }
    };
    GSList *uri_list;
    const char **args;
    poptContext popt_context;

    bindtextdomain (PACKAGE, EVOLUTION_LOCALEDIR);
    textdomain (PACKAGE);

    /* Make ElectricFence work.  */
    free (malloc (10));

    gnome_init_with_popt_table ("Evolution", VERSION " [" SUB_VERSION "]", argc, argv, options, 0, &popt_context);

    if (start_online && start_offline) {
        fprintf (stderr, _("%s: --online and --offline cannot be used together.\n  Use %s --help for more information.\n"),
             argv[0], argv[0]);
        exit (1);
    }

    if (evolution_debug_log) {
        int fd;

        fd = open (evolution_debug_log, O_WRONLY | O_CREAT | O_TRUNC, 0600);
        if (fd) {
            dup2 (fd, STDOUT_FILENO);
            dup2 (fd, STDERR_FILENO);
            close (fd);
        } else
            g_warning ("Could not set up debugging output file.");
    }

    oaf_init (argc, argv);

#ifdef GTKHTML_HAVE_GCONF
    gconf_init (argc, argv, NULL);
#endif

    glade_gnome_init ();
    e_cursors_init ();
    e_icon_factory_init ();

    gnome_window_icon_set_default_from_file (EVOLUTION_IMAGES "/evolution-inbox.png");

    if (! bonobo_init (CORBA_OBJECT_NIL, CORBA_OBJECT_NIL, CORBA_OBJECT_NIL)) {
        e_notice (NULL, GNOME_MESSAGE_BOX_ERROR,
              _("Cannot initialize the Bonobo component system."));
        exit (1);
    }

    /* FIXME */
    evolution_directory = g_concat_dir_and_file (g_get_home_dir (), "evolution");

    if (! e_setup (evolution_directory))
        exit (1);

    uri_list = NULL;

    args = poptGetArgs (popt_context);
    if (args != NULL) {
        const char **p;

        for (p = args; *p != NULL; p++)
            uri_list = g_slist_prepend (uri_list, (char *) *p);
    }

    gtk_idle_add (idle_cb, uri_list);

    gtk_widget_push_visual (gdk_rgb_get_visual ());
    gtk_widget_push_colormap (gdk_rgb_get_cmap ());

    bonobo_main ();

    return 0;
}