path: root/calendar/gnome-cal.c

/*
 * GnomeCalendar widget
 * Copyright (C) 1998 the Free Software Foundation
 *
 * Author: Miguel de Icaza (miguel@kernel.org)
 */
#include <config.h>
#include <gnome.h>
#include <unistd.h>
#include <signal.h>
#include <sys/wait.h>
#include <fcntl.h>
#include "calendar.h"
#include "gnome-cal.h"
#include "gncal-day-panel.h"
#include "gncal-week-view.h"
#include "gncal-year-view.h"
#include "timeutil.h"
#include "views.h"
#include "main.h"

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) NULL,
            (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
setup_widgets (GnomeCalendar *gcal)
{
    time_t now;

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

    gtk_notebook_append_page (GTK_NOTEBOOK (gcal->notebook), gcal->day_view,  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 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_return_if_fail (new_time != -1);

    if (current == gcal->day_view)
        gncal_day_panel_set (GNCAL_DAY_PANEL (gcal->day_view), new_time);
    else if (current == gcal->week_view)
        gncal_week_view_set (GNCAL_WEEK_VIEW (gcal->week_view), new_time);
    else if (current == gcal->year_view)
        gncal_year_view_set (GNCAL_YEAR_VIEW (gcal->year_view), new_time);
    else {
        g_warning ("My penguin is gone!");
        g_assert_not_reached ();
    }

    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->day_view)
        new_time = time_add_day (gcal->current_display, 1 * direction);
    else if (cp == gcal->week_view)
        new_time = time_add_day (gcal->current_display, 7 * 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?");
        g_assert_not_reached ();
        new_time = 0;
    }

    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);
    setup_widgets (gcal);
    return retval;
}

static void
gnome_calendar_update_all (GnomeCalendar *cal, iCalObject *object, int flags)
{
    gncal_day_panel_update (GNCAL_DAY_PANEL (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);
}

int
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 0;
    }
    gnome_calendar_update_all (gcal, NULL, 0);
    return 1;
}

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 < top; 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;
        pid_t pid;
        int   p [2];

        pipe (p);
        pid = fork ();
        if (pid == 0){
            const int top = max_open_files ();
            int dev_null, i;
            dev_null = open ("/dev/null", O_RDWR);
            dup2 (p [1], 0);
            dup2 (dev_null, 1);
            dup2 (dev_null, 2);
            execl ("/usr/lib/sendmail", "/usr/lib/sendmail",
                   ico->malarm.data, NULL);
            _exit (127);
        }
        close (p [1]);
        command = g_copy_strings ("To: ", ico->malarm.data, "\n",
                      "Subject: ", _("Reminder of your appointment at "),
                      ctime (&app), "\n\n", NULL);
        write (p [0], command, strlen (command));

        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;
    }
}