po

/*
 * GnomeCalendar widget
 * Copyright (C) 1998 the Free Software Foundation
 *
 * Authors:
 *          Miguel de Icaza (miguel@kernel.org)
 *          Federico Mena (quartic@gimp.org)
 */

#include <config.h>
#include <gnome.h>
#include <pwd.h>
#include <sys/types.h>
#include <string.h>
#include <ctype.h>
#include "alarm.h"
#include "calendar.h"
#include "eventedit.h"
#include "gnome-cal.h"
#include "main.h"
#include "timeutil.h"
#include "goto.xpm"

#define COOKIE_USER_HOME_DIR ((char *) -1)

/* The username, used to set the `owner' field of the event */
char *user_name;

/* The full user name from the Gecos field */
char *full_name;

/* The user's default calendar file */
char *user_calendar_file;

/* a gnome-config string prefix that can be used to access the calendar config info */
char *calendar_settings;

/* Day begin, day end parameters */
int day_begin, day_end;

/* Whether weeks starts on Sunday or Monday */
int week_starts_on_monday;

/* Number of calendars active */
int active_calendars = 0;

/* A list of all of the calendars started */
GList *all_calendars = NULL;

static void new_calendar (char *full_name, char *calendar_file, char *geometry, char *view);

/* For dumping part of a calendar */
static time_t from_t, to_t;

/* File to load instead of the user default's file */
static char *load_file;

/* If set, show events for the specified date and quit */
static int show_events;

static void
init_username (void)
{
    char *p;
    struct passwd *passwd;

    passwd = getpwuid (getuid ());
    if ((p = passwd->pw_name)) {
        char *comma;
        
        user_name = g_strdup (p);
        full_name = g_strdup (passwd->pw_gecos);

        /* Keep only the name from the gecos field */
        if ((comma = strchr (full_name, ',')) != NULL)
            *comma = 0;
    } else {
        if ((p = getenv ("USER"))) {
            user_name = g_strdup (p);
            full_name = g_strdup (p);
            return;
        } else {
            user_name = g_strdup ("unknown");
            full_name = g_strdup ("unknown");
        }
    }
    endpwent ();
}

static int
range_check_hour (int hour)
{
    if (hour < 0)
        hour = 0;
    else if (hour >= 24)
        hour = 23;

    return hour;
}

/*
 * Initializes the calendar internal variables, loads defaults
 */
static void
init_calendar (void)
{
    init_username ();
    user_calendar_file = g_concat_dir_and_file (gnome_util_user_home (), ".gnome/user-cal.vcf");

    gnome_config_push_prefix (calendar_settings);
    day_begin  = range_check_hour (gnome_config_get_int  ("/calendar/Calendar/Day start=8"));
    day_end    = range_check_hour (gnome_config_get_int  ("/calendar/Calendar/Day end=17"));
    am_pm_flag = gnome_config_get_bool ("/calendar/Calendar/AM PM flag=0");
    week_starts_on_monday = gnome_config_get_bool ("/calendar/Calendar/Week starts on Monday=0");

    if (day_end < day_begin){
        day_begin = 8;
        day_end   = 17;
    }

    gnome_config_pop_prefix ();
}

static void save_calendar_cmd (GtkWidget *widget, void *data);

static void
about_calendar_cmd (GtkWidget *widget, void *data)
{
        GtkWidget *about;
        const gchar *authors[] = {
        "Miguel de Icaza (miguel@kernel.org)",
        "Federico Mena (quartic@gimp.org)",
        "Arturo Espinosa (arturo@nuclecu.unam.mx)",
        NULL
    };

        about = gnome_about_new (_("Gnome Calendar"), VERSION,
                 "(C) 1998 the Free Software Foundation",
                 authors,
                 _("The GNOME personal calendar and schedule manager."),
                 NULL);
    gnome_dialog_run_and_destroy (GNOME_DIALOG (about));
#if 0
        gtk_widget_show (about);
#endif
}

static void
display_objedit (GtkWidget *widget, GnomeCalendar *gcal)
{
    GtkWidget *ee;
    iCalObject *ico;
    
    /* Default to the day the user is looking at */
    ico = ical_new ("", user_name, "");
    ico->new = 1;
    ico->dtstart = time_add_minutes (gcal->current_display, day_begin * 60);
    ico->dtend   = time_add_minutes (ico->dtstart, day_begin * 60 + 30 );
    
    ee = event_editor_new (gcal, ico);
    gtk_widget_show (ee);
}

static void
display_objedit_today (GtkWidget *widget, GnomeCalendar *gcal)
{
    GtkWidget *ee;
    
    ee = event_editor_new (gcal, NULL);
    gtk_widget_show (ee);
}

static void
close_cmd (GtkWidget *widget, GnomeCalendar *gcal)
{
    all_calendars = g_list_remove (all_calendars, gcal);
    if (gcal->cal->modified){
        if (!gcal->cal->filename)
            save_calendar_cmd (widget, gcal);
        else
            calendar_save (gcal->cal, gcal->cal->filename);
    }

    gtk_widget_destroy (GTK_WIDGET (gcal));
    active_calendars--;
    
    if (active_calendars == 0)
        gtk_main_quit ();
}

void
time_format_changed (void)
{
    GList *l;

    /* FIXME: update all the calendars and stuff */

    for (l = all_calendars; l; l = l->next){
        GnomeCalendar *cal = GNOME_CALENDAR (l->data);

        gtk_widget_queue_resize (cal->notebook);
    }
}

static void
quit_cmd (void)
{
    while (all_calendars){
        GnomeCalendar *cal = GNOME_CALENDAR (all_calendars->data);

        close_cmd (GTK_WIDGET (cal), cal);
    }
}

static void
previous_clicked (GtkWidget *widget, GnomeCalendar *gcal)
{
    gnome_calendar_previous (gcal);
}

static void
next_clicked (GtkWidget *widget, GnomeCalendar *gcal)
{
    gnome_calendar_next (gcal);
}

static void
today_clicked (GtkWidget *widget, GnomeCalendar *gcal)
{
    gnome_calendar_goto_today (gcal);
}

static void
goto_clicked (GtkWidget *widget, GnomeCalendar *gcal)
{
    goto_dialog (gcal);
}

static void
new_calendar_cmd (GtkWidget *widget, void *data)
{
    new_calendar (full_name, NULL, NULL, NULL);
}

static void
open_ok (GtkWidget *widget, GtkFileSelection *fs)
{
    /* FIXME: find out who owns this calendar and use that name */
    new_calendar ("Somebody", gtk_file_selection_get_filename (fs), NULL, NULL);

    gtk_widget_destroy (GTK_WIDGET (fs));
}

static void
open_calendar_cmd (GtkWidget *widget, void *data)
{
    GtkFileSelection *fs;

    fs = GTK_FILE_SELECTION (gtk_file_selection_new (_("Open calendar")));

    gtk_signal_connect (GTK_OBJECT (fs->ok_button), "clicked",
                (GtkSignalFunc) open_ok,
                fs);
    gtk_signal_connect_object (GTK_OBJECT (fs->cancel_button), "clicked",
                   (GtkSignalFunc) gtk_widget_destroy,
                   GTK_OBJECT (fs));

    gtk_widget_show (GTK_WIDGET (fs));
    gtk_grab_add (GTK_WIDGET (fs)); /* Yes, it is modal, so sue me */
}

static void
save_ok (GtkWidget *widget, GtkFileSelection *fs)
{
    GnomeCalendar *gcal;

    gcal = GNOME_CALENDAR (gtk_object_get_user_data (GTK_OBJECT (fs)));
    gtk_window_set_wmclass (GTK_WINDOW (gcal), "gnomecal", "gnomecal");
    
    if (gcal->cal->filename)
        g_free (gcal->cal->filename);

    gcal->cal->filename = g_strdup (gtk_file_selection_get_filename (fs));
    calendar_save (gcal->cal, gcal->cal->filename);
    gtk_main_quit ();
}

static gint
close_save (GtkWidget *w)
{
    gtk_main_quit ();
    return TRUE;
}

static void
save_as_calendar_cmd (GtkWidget *widget, void *data)
{
    GtkFileSelection *fs;

    fs = GTK_FILE_SELECTION (gtk_file_selection_new (_("Save calendar")));
    gtk_object_set_user_data (GTK_OBJECT (fs), data);

    gtk_signal_connect (GTK_OBJECT (fs->ok_button), "clicked",
                (GtkSignalFunc) save_ok,
                fs);
    gtk_signal_connect_object (GTK_OBJECT (fs->cancel_button), "clicked",
                   (GtkSignalFunc) close_save,
                   GTK_OBJECT (fs));
    gtk_signal_connect_object (GTK_OBJECT (fs), "delete_event",
                   GTK_SIGNAL_FUNC (close_save),
                   GTK_OBJECT (fs));
    gtk_widget_show (GTK_WIDGET (fs));
    gtk_grab_add (GTK_WIDGET (fs)); /* Yes, it is modal, so sue me even more */
    gtk_main ();
    gtk_widget_destroy (GTK_WIDGET (fs));
}

static void
save_calendar_cmd (GtkWidget *widget, void *data)
{
    GnomeCalendar *gcal = data;

    if (gcal->cal->filename)
        calendar_save (gcal->cal, gcal->cal->filename);
    else
        save_as_calendar_cmd (widget, data);
}

static GnomeUIInfo gnome_cal_file_menu [] = {
    { GNOME_APP_UI_ITEM, N_("New calendar"),  NULL, new_calendar_cmd, NULL, NULL,
      GNOME_APP_PIXMAP_STOCK, GNOME_STOCK_MENU_NEW },

    { GNOME_APP_UI_ITEM, N_("Open calendar..."), NULL, open_calendar_cmd, NULL, NULL,
      GNOME_APP_PIXMAP_STOCK, GNOME_STOCK_MENU_OPEN },

    { GNOME_APP_UI_ITEM, N_("Save calendar"), NULL, save_calendar_cmd, NULL, NULL,
      GNOME_APP_PIXMAP_STOCK, GNOME_STOCK_MENU_SAVE },

    { GNOME_APP_UI_ITEM, N_("Save calendar as..."), NULL, save_as_calendar_cmd, NULL, NULL,
      GNOME_APP_PIXMAP_STOCK, GNOME_STOCK_MENU_SAVE },

    { GNOME_APP_UI_SEPARATOR },
    { GNOME_APP_UI_ITEM, N_("Close this calendar"), NULL, close_cmd, NULL, NULL,
      GNOME_APP_PIXMAP_STOCK, GNOME_STOCK_MENU_EXIT },

    { GNOME_APP_UI_ITEM, N_("Exit"), NULL, quit_cmd, NULL, NULL,
      GNOME_APP_PIXMAP_STOCK, GNOME_STOCK_MENU_EXIT },

    GNOMEUIINFO_END
};

static GnomeUIInfo gnome_cal_about_menu [] = {
    { GNOME_APP_UI_ITEM, N_("About..."), NULL, about_calendar_cmd, NULL, NULL,
      GNOME_APP_PIXMAP_STOCK, GNOME_STOCK_MENU_ABOUT },
    GNOMEUIINFO_SEPARATOR,
    GNOMEUIINFO_HELP ("cal"),
    GNOMEUIINFO_END
};

static GnomeUIInfo gnome_cal_edit_menu [] = {
    { GNOME_APP_UI_ITEM, N_("New appointment..."), NULL, display_objedit },
    { GNOME_APP_UI_ITEM, N_("New appointment for today..."), NULL, display_objedit_today },
    GNOMEUIINFO_SEPARATOR,
    { GNOME_APP_UI_ITEM, N_("Preferences..."),      NULL, properties, NULL, NULL,
      GNOME_APP_PIXMAP_STOCK, GNOME_STOCK_MENU_PREF },
    GNOMEUIINFO_END
};

static GnomeUIInfo gnome_cal_menu [] = {
    { GNOME_APP_UI_SUBTREE, N_("File"), NULL, &gnome_cal_file_menu },
    { GNOME_APP_UI_SUBTREE, N_("Calendar"), NULL, &gnome_cal_edit_menu },
    { GNOME_APP_UI_SUBTREE, N_("Help"), NULL, &gnome_cal_about_menu },
    GNOMEUIINFO_END
};

static GnomeUIInfo gnome_toolbar [] = {
    { GNOME_APP_UI_ITEM, N_("New"), N_("Create a new appointment"), display_objedit, 0, 0,
      GNOME_APP_PIXMAP_STOCK, GNOME_STOCK_PIXMAP_NEW },

    GNOMEUIINFO_SEPARATOR,

    { GNOME_APP_UI_ITEM, N_("Prev"), N_("Go back in time"), previous_clicked, 0, 0,
      GNOME_APP_PIXMAP_STOCK, GNOME_STOCK_MENU_BACK },

    { GNOME_APP_UI_ITEM, N_("Today"), N_("Go to present time"), today_clicked, 0, 0,
      GNOME_APP_PIXMAP_STOCK, GNOME_STOCK_PIXMAP_HOME },

    { GNOME_APP_UI_ITEM, N_("Next"), N_("Go forward in time"), next_clicked, 0, 0,
      GNOME_APP_PIXMAP_STOCK, GNOME_STOCK_MENU_FORWARD },

    GNOMEUIINFO_SEPARATOR,

    GNOMEUIINFO_ITEM (N_("Go to"), N_("Go to a specific date"), goto_clicked, goto_xpm),

    GNOMEUIINFO_END
};

static void
setup_menu (GtkWidget *gcal)
{
    gnome_app_create_menus_with_data (GNOME_APP (gcal), gnome_cal_menu, gcal);
    gnome_app_create_toolbar_with_data (GNOME_APP (gcal), gnome_toolbar, gcal);
}

static gint
calendar_close_event (GtkWidget *widget, GdkEvent *event, GnomeCalendar *gcal)
{
    close_cmd (widget, gcal);
    return TRUE;
}

static void
new_calendar (char *full_name, char *calendar_file, char *geometry, char *page)
{
    GtkWidget   *toplevel;
    char        title[128];
    int         xpos, ypos, width, height;

    /* i18n: This "%s%s" indicates possession. Languages where the order is
       the inverse should translate it to "%2$s%1$s". */
    g_snprintf(title, 128, _("%s%s"), full_name, _("'s calendar"));

    toplevel = gnome_calendar_new (title);
    if (gnome_parse_geometry (geometry, &xpos, &ypos, &width, &height)){
        if (xpos != -1)
            gtk_widget_set_uposition (toplevel, xpos, ypos);
        if (width != -1)
            gtk_widget_set_usize (toplevel, width, height);
    }
    setup_menu (toplevel);

    if (page)
        gnome_calendar_set_view (GNOME_CALENDAR (toplevel), page);
    
    if (calendar_file && g_file_exists (calendar_file)) 
        gnome_calendar_load (GNOME_CALENDAR (toplevel), calendar_file);
    else
        GNOME_CALENDAR (toplevel)->cal->filename = g_strdup (calendar_file);

    gtk_signal_connect (GTK_OBJECT (toplevel), "delete_event",
                GTK_SIGNAL_FUNC(calendar_close_event), toplevel);
    
    active_calendars++;
    all_calendars = g_list_prepend (all_calendars, toplevel);
    gtk_widget_show (toplevel);
}

static void
process_dates (void)
{
    if (!from_t)
        from_t = time_start_of_day (time (NULL));
    
    if (!to_t || to_t < from_t)
        to_t = time_add_day (from_t, 1);
}

enum {
    GEOMETRY_KEY = -1,
    USERFILE_KEY = -2,
    VIEW_KEY     = -3
};

static struct argp_option argp_options [] = {
    { "events",         'e', NULL,           0, N_("Show events and quit"),                 0 },
    { "from",           'f', N_("DATE"),     0, N_("Specifies start date [for --events]"),  1 },
    { "file",           'F', N_("FILE"),     0, N_("File to load calendar from"),           1 },
    { "userfile", USERFILE_KEY,  NULL,           0, N_("Load the user calendar"),               1 },
    { "geometry", GEOMETRY_KEY,  N_("GEOMETRY"), 0, N_("Geometry for starting up"),             1 },
    { "view",     VIEW_KEY,      N_("VIEW"),     0, N_("The startup view mode"),                1 },
    { "to",                 't', N_("DATE"),     0, N_("Specifies ending date [for --events]"), 1 },
    { NULL, 0, NULL, 0, NULL, 0 },
};

/* Lists used to startup various GnomeCalendars */
static GList *start_calendars;
static GList *start_geometries;
static GList *start_views;

static int
same_day (struct tm *a, struct tm *b)
{
    return (a->tm_mday == b->tm_mday &&
        a->tm_mon  == b->tm_mon &&
        a->tm_year == b->tm_year);
}

static void
dump_events (void)
{
    Calendar *cal;
    GList *l;
    char *s;
    time_t now = time (NULL);
    struct tm today = *localtime (&now);
    
    process_dates ();
    init_calendar ();
    
    cal = calendar_new (full_name);
    s = calendar_load (cal, load_file ? load_file : user_calendar_file);
    if (s){
        printf ("error: %s\n", s);
        exit (1);
    }
    l = calendar_get_events_in_range (cal, from_t, to_t);
    for (; l; l = l->next){
        char start [80], end [80];
        CalendarObject *co = l->data;
        struct tm ts, te;
        char *format;
        
        ts = *localtime (&co->ev_start);
        te = *localtime (&co->ev_end);

        if (same_day (&today, &ts))
            format = "%H:%M";
        else
            format = "%A %d, %H:%M";
        strftime (start, sizeof (start), format, &ts);

        if (!same_day (&ts, &te))
            format = "%A %d, %H:%M";
        strftime (end,   sizeof (start), format, &te);
        
        printf ("%s -- %s\n", start, end);
        printf ("  %s\n", co->ico->summary);
    }
    calendar_destroy_event_list (l);
    calendar_destroy (cal);
    exit (0);
}

extern time_t get_date ();

static error_t
parse_an_arg (int key, char *arg, struct argp_state *state)
{
    switch (key){
    case 'f':
        from_t = get_date (arg, NULL);
        break;

    case 't':
        to_t = get_date (arg, NULL);
        break;

    case GEOMETRY_KEY:
        start_geometries = g_list_append (start_geometries, arg);
        break;

    case USERFILE_KEY:
        /* This is a special key that tells the program to load
         * the user's calendar file.  This allows session management
         * to work even if the User's home directory changes location
         * (ie, on a networked setup).
         */
        arg = COOKIE_USER_HOME_DIR;
        /* fall trough */

    case VIEW_KEY:
        start_views = g_list_append (start_views, arg);
        break;
        
    case 'F':
        start_calendars = g_list_append (start_calendars, arg);
        break;

    case 'e':
        show_events = 1;
        break;

    case ARGP_KEY_END:
        if (show_events)
            dump_events ();

    default:
        return ARGP_ERR_UNKNOWN;
    }
    return 0;
}

static struct argp parser =
{
    argp_options, parse_an_arg, NULL, NULL, NULL, NULL, NULL
};

static void
session_die (void)
{
    quit_cmd ();
}

/*
 * Save the session callback
 */
static int
session_save_state (GnomeClient *client, gint phase, GnomeRestartStyle save_style, gint shutdown,
            GnomeInteractStyle  interact_style, gint fast, gpointer client_data)
{
    char *sess_id;
    char **argv = (char **) g_malloc (sizeof (char *) * ((active_calendars * 6) + 3));
    GList *l, *free_list = 0;
    int   i;

    sess_id = gnome_client_get_id (client);
    
    argv [0] = client_data;
    for (i = 1, l = all_calendars; l; l = l->next){
        GnomeCalendar *gcal = GNOME_CALENDAR (l->data);
        char *geometry;

        geometry = gnome_geometry_string (GTK_WIDGET (gcal)->window);

        if (strcmp (gcal->cal->filename, user_calendar_file) == 0)
            argv [i++] = "--userfile";
        else {
            argv [i++] = "--file";
            argv [i++] = gcal->cal->filename;
        }
        argv [i++] = "--geometry";
        argv [i++] = geometry;
        argv [i++] = "--view";
        argv [i++] = gnome_calendar_get_current_view_name (gcal);
        free_list = g_list_append (free_list, geometry);
        calendar_save (gcal->cal, gcal->cal->filename);
    }
    argv [i] = NULL;
    gnome_client_set_clone_command (client, i, argv);
    gnome_client_set_restart_command (client, i, argv);

    for (l = free_list; l; l = l->next)
        g_free (l->data);
    g_list_free (free_list);
    
    return 1;
}

int 
main(int argc, char *argv[])
{
    GnomeClient *client;
    
    argp_program_version = VERSION;

    bindtextdomain(PACKAGE, GNOMELOCALEDIR);
    textdomain(PACKAGE);

    client = gnome_client_new_default ();
    if (client){
        gtk_signal_connect (GTK_OBJECT (client), "save_yourself",
                    GTK_SIGNAL_FUNC (session_save_state), argv [0]);
        gtk_signal_connect (GTK_OBJECT (client), "die",
                    GTK_SIGNAL_FUNC (session_die), NULL);
    }
    gnome_init ("calendar", &parser, argc, argv, 0, NULL);

    process_dates ();
    alarm_init ();
    init_calendar ();

    /*
     * Load all of the calendars specifies in the command line with
     * the geometry specificied -if any-
     */
    if (start_calendars){
        GList *p, *g, *v;
        char *title;

        p = start_calendars;
        g = start_geometries;
        v = start_views;
        while (p){
            char *file = p->data;
            char *geometry = g ? g->data : NULL;
            char *page_name = v ? v->data : NULL;
            
            if (file == COOKIE_USER_HOME_DIR)
                file = user_calendar_file;
            
            if (strcmp (file, user_calendar_file) == 0)
                title = full_name;
            else
                title = file;
            new_calendar (title, file, geometry, page_name);
            
            p = p->next;
            if (g)
                g = g->next;
            if (v)
                v = v->next;
        }
        g_list_free (p);
    } else {
        char *geometry = start_geometries ? start_geometries->data : NULL;
        char *page_name = start_views ? start_views->data : NULL;
        
        new_calendar (full_name, user_calendar_file, geometry, page_name);
    }
    gtk_main ();
    return 0;
}
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