path: root/calendar/gui/gnome-cal.c

/*
 * GnomeCalendar widget
 * Copyright (C) 1998 the Free Software Foundation
 *
 * Author: Miguel de Icaza (miguel@kernel.org)
 */

#include <gnome.h>
#include <unistd.h>
#include <signal.h>
#include "calendar.h"
#include "gnome-cal.h"
#include "gncal-full-day.h"
#include "gncal-year-view.h"
#include "gncal-week-view.h"
#include "timeutil.h"
#include "views.h"
#include "main.h"

static void gnome_calendar_init                    (GnomeCalendar *gcal);

GnomeApp *parent_class;

guint
gnome_calendar_get_type (void)
{
    static guint gnome_calendar_type = 0;
    if(!gnome_calendar_type) {
        GtkTypeInfo gnome_calendar_info = {
            "GnomeCalendar",
            sizeof(GnomeCalendar),
            sizeof(GnomeCalendarClass),
            (GtkClassInitFunc) NULL,
            (GtkObjectInitFunc) gnome_calendar_init,
            (GtkArgSetFunc) NULL,
            (GtkArgGetFunc) NULL,
        };
        gnome_calendar_type = gtk_type_unique(gnome_app_get_type(), &gnome_calendar_info);
        parent_class = gtk_type_class (gnome_app_get_type());
    }
    return gnome_calendar_type;
}

static void
day_view_range_activated (GncalFullDay *fullday, GnomeCalendar *gcal)
{
    iCalObject *ical;

    ical = ical_new ("", user_name, "");
    ical->new = 1;

    gncal_full_day_selection_range (fullday, &ical->dtstart, &ical->dtend);

    gnome_calendar_add_object (gcal, ical);
    gncal_full_day_focus_child (fullday, ical);
}

static void
set_day_view_label (GnomeCalendar *gcal, time_t t)
{
    static char buf[256];

    strftime (buf, sizeof (buf), "%a %b %d %Y", localtime (&t));
    gtk_label_set (GTK_LABEL (gcal->day_view_label), buf);
}

static void
setup_day_view (GnomeCalendar *gcal, time_t now)
{
    GtkTable  *t;
    GtkWidget *sw;
    
    time_t a, b;
    
    a = time_start_of_day (now);
    b = time_end_of_day (now);
    
    gcal->day_view = gncal_full_day_new (gcal, a, b);
    gtk_signal_connect (GTK_OBJECT (gcal->day_view), "range_activated",
                (GtkSignalFunc) day_view_range_activated,
                gcal);

    t = (GtkTable *) gcal->day_view_container = gtk_table_new (0, 0, 0);
    gtk_container_border_width (GTK_CONTAINER (t), 4);
    gtk_table_set_row_spacings (t, 4);
    gtk_table_set_col_spacings (t, 4);
    
    gcal->day_view_label = gtk_label_new ("");
    set_day_view_label (gcal, now);
    gtk_table_attach (t, gcal->day_view_label, 0, 1, 0, 1,
              GTK_FILL | GTK_SHRINK,
              GTK_FILL | GTK_SHRINK,
              0, 0);

    sw = gtk_scrolled_window_new (NULL, NULL);
    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
                    GTK_POLICY_AUTOMATIC,
                    GTK_POLICY_AUTOMATIC);
    gtk_table_attach (t, sw, 0, 1, 1, 2,
              GTK_FILL | GTK_EXPAND | GTK_SHRINK,
              GTK_FILL | GTK_EXPAND | GTK_SHRINK,
              0, 0);
    gtk_container_add (GTK_CONTAINER (sw), gcal->day_view);
    gtk_widget_show_all (GTK_WIDGET (t));
}

static void
setup_widgets (GnomeCalendar *gcal)
{
    time_t now;

    now = time (NULL);
    
    gcal->notebook  = gtk_notebook_new ();
    gcal->week_view = gncal_week_view_new (gcal, now);
    gcal->year_view = gncal_year_view_new (gcal, now);
    gcal->task_view = tasks_create (gcal);

    setup_day_view (gcal, now);
    
    gtk_notebook_append_page (GTK_NOTEBOOK (gcal->notebook), gcal->day_view_container,  gtk_label_new (_("Day View")));
    gtk_notebook_append_page (GTK_NOTEBOOK (gcal->notebook), gcal->week_view, gtk_label_new (_("Week View")));
    gtk_notebook_append_page (GTK_NOTEBOOK (gcal->notebook), gcal->year_view, gtk_label_new (_("Year View")));
/*  gtk_notebook_append_page (GTK_NOTEBOOK (gcal->notebook), gcal->task_view, gtk_label_new (_("Todo"))); */

    gtk_widget_show_all (gcal->notebook);
    
    gnome_app_set_contents (GNOME_APP (gcal), gcal->notebook);
    
}

static void
gnome_calendar_init(GnomeCalendar *gcal)
{
    gcal->cal = 0;
    gcal->day_view = 0;
    gcal->week_view = 0;
    gcal->year_view = 0;
    gcal->event_editor = 0;

    setup_widgets (gcal);
}

static GtkWidget *
get_current_page (GnomeCalendar *gcal)
{
    return GTK_NOTEBOOK (gcal->notebook)->cur_page->child;
}

void
gnome_calendar_goto (GnomeCalendar *gcal, time_t new_time)
{
    GtkWidget *current = get_current_page (gcal);
    g_assert (new_time != -1);

    if (current == gcal->week_view)
        gncal_week_view_set (GNCAL_WEEK_VIEW (gcal->week_view), new_time);
    else if (current == gcal->day_view_container){
        gncal_full_day_set_bounds (GNCAL_FULL_DAY (gcal->day_view),
                       time_start_of_day (new_time),
                       time_end_of_day (new_time));
        set_day_view_label (gcal, new_time);
    } else if (current == gcal->year_view)
        gncal_year_view_set (GNCAL_YEAR_VIEW (gcal->year_view), new_time);
    else
        printf ("My penguin is gone!\n");
    gcal->current_display = new_time;
}

static void
gnome_calendar_direction (GnomeCalendar *gcal, int direction)
{
    GtkWidget *cp = get_current_page (gcal);
    time_t new_time;
    
    if (cp == gcal->week_view)
        new_time = time_add_day (gcal->current_display, 7 * direction);
    else if (cp == gcal->day_view_container)
        new_time = time_add_day (gcal->current_display, 1 * direction);
    else if (cp == gcal->year_view)
        new_time = time_add_year (gcal->current_display, 1 * direction);
    else
        g_warning ("Weee!  Where did the penguin go?");
    
    gnome_calendar_goto (gcal, new_time);
}

void
gnome_calendar_next (GnomeCalendar *gcal)
{
gnome_calendar_direction (gcal, 1);
}

void
gnome_calendar_previous (GnomeCalendar *gcal)
{
    gnome_calendar_direction (gcal, -1);
}

void
gnome_calendar_dayjump (GnomeCalendar *gcal, time_t time)
{
    gtk_notebook_set_page (GTK_NOTEBOOK (gcal->notebook), 0);
    gnome_calendar_goto (gcal, time);
}

GtkWidget *
gnome_calendar_new (char *title)
{
    GtkWidget      *retval;
    GnomeCalendar  *gcal;
    GnomeApp       *app;
        
    retval = gtk_type_new (gnome_calendar_get_type ());
    app = GNOME_APP (retval);
    gcal = GNOME_CALENDAR (retval);
    
    app->name = g_strdup ("calendar");
    app->prefix = g_copy_strings ("/", app->name, "/", NULL);
    
    gtk_window_set_title(GTK_WINDOW(retval), title);

    gcal->current_display = time (NULL);
    gcal->cal = calendar_new (title);
    return retval;
}

static void
gnome_calendar_update_all (GnomeCalendar *cal, iCalObject *object, int flags)
{
    gncal_full_day_update  (GNCAL_FULL_DAY  (cal->day_view),  object, flags);
    gncal_week_view_update (GNCAL_WEEK_VIEW (cal->week_view), object, flags);
    gncal_year_view_update (GNCAL_YEAR_VIEW (cal->year_view), object, flags);
}

void
gnome_calendar_load (GnomeCalendar *gcal, char *file)
{
    char *r;
    
    if ((r = calendar_load (gcal->cal, file)) != NULL){
        printf ("Error loading calendar: %s\n", r);
        return;
    }
    gnome_calendar_update_all (gcal, NULL, 0);
}

void
gnome_calendar_add_object (GnomeCalendar *gcal, iCalObject *obj)
{
    calendar_add_object (gcal->cal, obj);
    gnome_calendar_update_all (gcal, obj, CHANGE_NEW);
}

void
gnome_calendar_remove_object (GnomeCalendar *gcal, iCalObject *obj)
{
    calendar_remove_object (gcal->cal, obj);
    gnome_calendar_update_all (gcal, obj, CHANGE_ALL);
}

void
gnome_calendar_object_changed (GnomeCalendar *gcal, iCalObject *obj, int flags)
{
    g_return_if_fail (gcal != NULL);
    g_return_if_fail (GNOME_IS_CALENDAR (gcal));
    g_return_if_fail (obj != NULL);

    /* FIXME: for now we only update the views.  Most likely we
     * need to do something else like set the last_mod field on
     * the iCalObject and such - Federico
     */

    gcal->cal->modified = TRUE;

    gnome_calendar_update_all (gcal, obj, flags);
}

static int
max_open_files (void)
{
        static int files;

        if (files)
                return files;

        files = sysconf (_SC_OPEN_MAX);
        if (files != -1)
                return files;
#ifdef OPEN_MAX
        return files = OPEN_MAX;
#else
        return files = 256;
#endif
}

static void
execute (char *command, int close_standard)
{
    struct sigaction ignore, save_intr, save_quit;
    int status = 0, i;
    pid_t pid;
    
    ignore.sa_handler = SIG_IGN;
    sigemptyset (&ignore.sa_mask);
    ignore.sa_flags = 0;
    
    sigaction (SIGINT, &ignore, &save_intr);    
    sigaction (SIGQUIT, &ignore, &save_quit);

    if ((pid = fork ()) < 0){
        fprintf (stderr, "\n\nfork () = -1\n");
        return;
    }
    if (pid == 0){
        pid = fork ();
        if (pid == 0){
            const int top = max_open_files ();
            sigaction (SIGINT,  &save_intr, NULL);
            sigaction (SIGQUIT, &save_quit, NULL);
            
            for (i = (close_standard ? 0 : 3); i < 4096; i++)
                close (i);
            
            /* FIXME: As an excercise to the reader, copy the
             * code from mc to setup shell properly instead of
             * /bin/sh.  Yes, this comment is larger than a cut and paste.
             */
            execl ("/bin/sh", "/bin/sh", "-c", command, (char *) 0);
            
            exit (127);
        } else {
            exit (127);
        }
    }
    wait (&status);
    sigaction (SIGINT,  &save_intr, NULL);
    sigaction (SIGQUIT, &save_quit, NULL);
}

void
calendar_notify (time_t time, void *data)
{
    iCalObject *ico = data;

    if (ico->aalarm.enabled && ico->aalarm.trigger == time){
        printf ("bip\n");
        return;
    }

        if (ico->palarm.enabled && ico->palarm.trigger == time){
        execute (ico->palarm.data, 0);
        return;
    }

    if (ico->malarm.enabled && ico->malarm.trigger == time){
        char *command;
        time_t app = ico->malarm.trigger + ico->malarm.offset;
        
        command = g_copy_strings ("mail -s '",
                      _("Reminder of your appointment at "),
                      ctime (&app), "' '",
                      ico->malarm.data, "' ",
                      NULL);
        execute (command, 1);
        
        g_free (command);
        return;
    }

    if (ico->dalarm.enabled && ico->dalarm.trigger == time){
        time_t app = ico->dalarm.trigger + ico->dalarm.offset;
        GtkWidget *w;
        char *msg;

        msg = g_copy_strings (_("Reminder of your appointment at "),
                    ctime (&app), "`",
                    ico->summary, "'", NULL);
        w = gnome_message_box_new (msg, GNOME_MESSAGE_BOX_INFO, "Ok", NULL);
        gtk_widget_show (w);
        return;
    }
}