path: root/calendar/gui/e-itip-control.c

  
                                                                
/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *      JP Rosevear <jpr@novell.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <glib/gi18n.h>
#include <glib/gstdio.h>
#include <gtkhtml/gtkhtml.h>
#include <gtkhtml/gtkhtml-embedded.h>
#include <gtkhtml/gtkhtml-stream.h>
#include <libedataserver/e-source-list.h>
#include <libedataserverui/e-source-combo-box.h>
#include <libical/ical.h>
#include <libecal/e-cal-component.h>
#include <libecal/e-cal-time-util.h>
#include <libecal/e-cal.h>
#include <libedataserver/e-time-utils.h>
#include <e-util/e-dialog-widgets.h>
#include <e-util/e-html-utils.h>
#include <e-util/e-icon-factory.h>
#include <e-util/e-util-private.h>
#include "dialogs/delete-error.h"
#include "calendar-config.h"
#include "itip-utils.h"
#include "e-itip-control.h"
#include "common/authentication.h"
#include <shell/e-shell.h>

struct _EItipControlPrivate {
    GtkWidget *html;

    ESourceList *source_lists[E_CAL_SOURCE_TYPE_LAST];
    GHashTable *ecals[E_CAL_SOURCE_TYPE_LAST];

    ECal *current_ecal;
    ECalSourceType type;

    gchar action;
    gboolean rsvp;

    /* Use the gpointer variants for weak pointers. */
    union {
        GtkWidget *widget;
        gpointer pointer;
    } ok;
    union {
        GtkWidget *widget;
        gpointer pointer;
    } hbox;
    union {
        GtkWidget *widget;
        gpointer pointer;
    } vbox;

    gchar *vcalendar;
    ECalComponent *comp;
    icalcomponent *main_comp;
    icalcomponent *ical_comp;
    icalcomponent *top_level;
    icalcompiter iter;
    icalproperty_method method;

    gint current;
    gint total;

    gchar *calendar_uid;

    EAccountList *accounts;

    gchar *from_address;
    gchar *delegator_address;
    gchar *delegator_name;
    gchar *my_address;
    gint   view_only;
};

/* HTML Strings */
#define HTML_BODY_START "<body bgcolor=\"#ffffff\" text=\"#000000\" link=\"#336699\">"
#define HTML_SEP        "<hr color=#336699 align=\"left\" width=450>"
#define HTML_BODY_END   "</body>"
#define HTML_FOOTER     "</html>"

static void e_itip_control_destroy  (GtkObject               *obj);

static void find_my_address (EItipControl *itip, icalcomponent *ical_comp, icalparameter_partstat *status);
static void url_requested_cb (GtkHTML *html, const gchar *url, GtkHTMLStream *handle, gpointer data);
static gboolean object_requested_cb (GtkHTML *html, GtkHTMLEmbedded *eb, gpointer data);
static void ok_clicked_cb (GtkWidget *widget, gpointer data);

G_DEFINE_TYPE (EItipControl, e_itip_control, GTK_TYPE_VBOX)

static void
e_itip_control_class_init (EItipControlClass *klass)
{
    GtkObjectClass *gtkobject_class;

    gtkobject_class = GTK_OBJECT_CLASS (klass);

    gtkobject_class->destroy = e_itip_control_destroy;
}

static void
set_ok_sens (EItipControl *itip)
{
    EItipControlPrivate *priv;
    gboolean read_only = TRUE;

    priv = itip->priv;

    if (!priv->ok.widget)
        return;

    if (priv->current_ecal)
        e_cal_is_read_only (priv->current_ecal, &read_only, NULL);

    gtk_widget_set_sensitive (priv->ok.widget, priv->current_ecal != NULL && !read_only);
}

static void
cal_opened_cb (ECal *ecal, ECalendarStatus status, gpointer data)
{
    EItipControl *itip = data;
    EItipControlPrivate *priv;
    ESource *source;
    ECalSourceType source_type;

    priv = itip->priv;

    source_type = e_cal_get_source_type (ecal);
    source = e_cal_get_source (ecal);

    g_signal_handlers_disconnect_matched (ecal, G_SIGNAL_MATCH_FUNC, 0, 0, NULL, cal_opened_cb, NULL);

    if (status != E_CALENDAR_STATUS_OK) {
        g_hash_table_remove (priv->ecals[source_type], e_source_peek_uid (source));

        return;
    }

    priv->current_ecal = ecal;
    set_ok_sens (itip);
}

typedef void (* EItipControlOpenFunc) (ECal *ecal, ECalendarStatus status, gpointer data);

static ECal *
start_calendar_server (EItipControl *itip, ESource *source, ECalSourceType type, EItipControlOpenFunc func, gpointer data)
{
    EItipControlPrivate *priv;
    ECal *ecal;
    icaltimezone *zone;

    priv = itip->priv;

    ecal = g_hash_table_lookup (priv->ecals[type], e_source_peek_uid (source));
    if (ecal) {
        priv->current_ecal = ecal;
        set_ok_sens (itip);
        return ecal;
    }

    ecal = auth_new_cal_from_source (source, type);

    zone = calendar_config_get_icaltimezone ();
    e_cal_set_default_timezone (ecal, zone, NULL);

    g_signal_connect (G_OBJECT (ecal), "cal_opened", G_CALLBACK (func), data);

    g_hash_table_insert (priv->ecals[type], g_strdup (e_source_peek_uid (source)), ecal);

    e_cal_open_async (ecal, TRUE);

    return ecal;
}

static ECal *
start_calendar_server_by_uid (EItipControl *itip, const gchar *uid, ECalSourceType type)
{
    EItipControlPrivate *priv;
    gint i;

    priv = itip->priv;

    for (i = 0; i < E_CAL_SOURCE_TYPE_LAST; i++) {
        ESource *source;

        source = e_source_list_peek_source_by_uid (priv->source_lists[i], uid);
        if (source)
            return start_calendar_server (itip, source, type, cal_opened_cb, itip);
    }

    return NULL;
}

typedef struct {
    EItipControl *itip;
    gchar *uid;
    gint count;
    gboolean show_selector;
} EItipControlFindData;

static void
source_changed_cb (ESourceComboBox *escb, EItipControl *itip)
{
    EItipControlPrivate *priv = itip->priv;
    ESource *source;

    source = e_source_combo_box_get_active (escb);

    if (priv->ok.widget)
        gtk_widget_set_sensitive (priv->ok.widget, FALSE);

    start_calendar_server (itip, source, priv->type, cal_opened_cb, itip);
}

static void
find_cal_opened_cb (ECal *ecal, ECalendarStatus status, gpointer data)
{
    EShell *shell;
    EShellSettings *shell_settings;
    EItipControlFindData *fd = data;
    EItipControlPrivate *priv;
    ESource *source;
    ECalSourceType source_type;
    icalcomponent *icalcomp;

    /* FIXME Pass this in. */
    shell = e_shell_get_default ();
    shell_settings = e_shell_get_shell_settings (shell);

    source_type = e_cal_get_source_type (ecal);
    source = e_cal_get_source (ecal);

    priv = fd->itip->priv;

    fd->count--;

    g_signal_handlers_disconnect_matched (ecal, G_SIGNAL_MATCH_FUNC, 0, 0, NULL, find_cal_opened_cb, NULL);

    if (status != E_CALENDAR_STATUS_OK) {
        g_hash_table_remove (priv->ecals[source_type], e_source_peek_uid (source));

        goto cleanup;
    }

    if (e_cal_get_object (ecal, fd->uid, NULL, &icalcomp, NULL)) {
        icalcomponent_free (icalcomp);

        priv->current_ecal = ecal;
        set_ok_sens (fd->itip);
    }

 cleanup:
    if (fd->count == 0) {
        if (fd->show_selector && !priv->current_ecal && priv->vbox.widget) {
            GtkWidget *escb;
            const gchar *property_name;
            gchar *uid;

            switch (priv->type) {
            case E_CAL_SOURCE_TYPE_EVENT:
                property_name = "cal-primary-calendar";
                break;
            case E_CAL_SOURCE_TYPE_TODO:
                property_name = "cal-primary-tasks";
                break;
            default:
                uid = NULL;
                g_return_if_reached ();
            }

            uid = e_shell_settings_get_string (
                shell_settings, property_name);

            if (uid) {
                source = e_source_list_peek_source_by_uid (priv->source_lists[priv->type], uid);
                g_free (uid);
            }

            /* Try to create a default if there isn't one */
            if (!source)
                source = e_source_list_peek_source_any (priv->source_lists[priv->type]);

            escb = e_source_combo_box_new (priv->source_lists[priv->type]);
            g_signal_connect_object (
                escb, "changed",
                G_CALLBACK (source_changed_cb), fd->itip, 0);

            gtk_box_pack_start (GTK_BOX (priv->vbox.widget), escb, FALSE, TRUE, 0);
            gtk_widget_show (escb);

            /* FIXME What if there is no source? */
            if (source)
                e_source_combo_box_set_active (E_SOURCE_COMBO_BOX (escb), source);
        } else {
            /* FIXME Display error message to user */
        }

        g_free (fd->uid);
        g_free (fd);
    }
}

static void
find_server (EItipControl *itip, ECalComponent *comp, gboolean show_selector)
{
    EItipControlPrivate *priv;
    EItipControlFindData *fd = NULL;
    GSList *groups, *l;
    const gchar *uid;

    priv = itip->priv;

    e_cal_component_get_uid (comp, &uid);

    groups = e_source_list_peek_groups (priv->source_lists[priv->type]);
    for (l = groups; l; l = l->next) {
        ESourceGroup *group;
        GSList *sources, *m;

        group = l->data;

        sources = e_source_group_peek_sources (group);
        for (m = sources; m; m = m->next) {
            ESource *source;
            ECal *ecal;

            source = m->data;

            if (!fd) {
                fd = g_new0 (EItipControlFindData, 1);
                fd->itip = itip;
                fd->uid = g_strdup (uid);
                fd->show_selector = show_selector;
            }
            fd->count++;
            /* Check this return too? */
            ecal = start_calendar_server (itip, source, priv->type, find_cal_opened_cb, fd);
        }
    }
}

static void
cleanup_ecal (gpointer data)
{
    ECal *ecal = data;

    /* Clean up any signals */
    g_signal_handlers_disconnect_matched (ecal, G_SIGNAL_MATCH_FUNC, 0, 0, NULL, cal_opened_cb, NULL);
    g_signal_handlers_disconnect_matched (ecal, G_SIGNAL_MATCH_FUNC, 0, 0, NULL, find_cal_opened_cb, NULL);

    g_object_unref (ecal);
}

static void
html_destroyed (gpointer data)
{
    EItipControl *itip = data;
    EItipControlPrivate *priv;

    priv = itip->priv;

    priv->html = NULL;
}

static void
e_itip_control_init (EItipControl *itip)
{
    EItipControlPrivate *priv;
    GtkWidget *scrolled_window;
    gint i;

    priv = g_new0 (EItipControlPrivate, 1);
    itip->priv = priv;

    /* Addresses */
    priv->accounts = itip_addresses_get ();

    /* Source Lists */
    for (i = 0; i < E_CAL_SOURCE_TYPE_LAST; i++)
        priv->source_lists[i] = NULL;

    priv->source_lists[E_CAL_SOURCE_TYPE_EVENT] = e_source_list_new_for_gconf_default ("/apps/evolution/calendar/sources");
    priv->source_lists[E_CAL_SOURCE_TYPE_TODO] = e_source_list_new_for_gconf_default ("/apps/evolution/tasks/sources");

    /* Initialize the ecal hashes */
    for (i = 0; i < E_CAL_SOURCE_TYPE_LAST; i++)
        priv->ecals[i] = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, cleanup_ecal);
    priv->current_ecal = NULL;

    /* Other fields to init */
    priv->calendar_uid = NULL;
    priv->from_address = NULL;
    priv->delegator_address = NULL;
    priv->delegator_name = NULL;
    priv->my_address = NULL;
    priv->view_only = 0;

    /* Html Widget */
    priv->html = gtk_html_new ();
    gtk_html_set_default_content_type (GTK_HTML (priv->html),
                       "text/html; charset=utf-8");
    gtk_html_load_from_string (GTK_HTML (priv->html), " ", 1);
    gtk_widget_show (priv->html);

    scrolled_window = gtk_scrolled_window_new (NULL, NULL);
    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
                    GTK_POLICY_AUTOMATIC,
                    GTK_POLICY_AUTOMATIC);
    gtk_widget_show (scrolled_window);

    gtk_container_add (GTK_CONTAINER (scrolled_window), priv->html);
    g_object_weak_ref (G_OBJECT (priv->html), (GWeakNotify)html_destroyed, itip);
    gtk_widget_set_size_request (scrolled_window, 600, 400);
    gtk_box_pack_start (GTK_BOX (itip), scrolled_window, FALSE, FALSE, 6);

    g_signal_connect (priv->html, "url_requested", G_CALLBACK (url_requested_cb), itip);
    g_signal_connect (priv->html, "object_requested", G_CALLBACK (object_requested_cb), itip);
    g_signal_connect (priv->html, "submit", G_CALLBACK (ok_clicked_cb), itip);
}

static void
clean_up (EItipControl *itip)
{
    EItipControlPrivate *priv;

    priv = itip->priv;
    if (!priv)
        return;

    g_free (priv->vcalendar);
    priv->vcalendar = NULL;

    if (priv->comp) {
        g_object_unref (priv->comp);
        priv->comp = NULL;
    }

    if (priv->top_level) {
        icalcomponent_free (priv->top_level);
        priv->top_level = NULL;
    }

    if (priv->main_comp) {
        icalcomponent_free (priv->main_comp);
        priv->main_comp = NULL;
    }
    priv->ical_comp = NULL;

    priv->current = 0;
    priv->total = 0;

    g_free (priv->calendar_uid);
    priv->calendar_uid = NULL;

    g_free (priv->from_address);
    priv->from_address = NULL;
    g_free (priv->delegator_address);
    priv->delegator_address = NULL;
    g_free (priv->delegator_name);
    priv->delegator_name = NULL;
    g_free (priv->my_address);
    priv->my_address = NULL;
}

static void
e_itip_control_destroy (GtkObject *obj)
{
    EItipControl *itip = E_ITIP_CONTROL (obj);
    EItipControlPrivate *priv;

    priv = itip->priv;

    if (priv) {
        gint i;

        clean_up (itip);

        priv->accounts = NULL;

        for (i = 0; i < E_CAL_SOURCE_TYPE_LAST; i++) {
            if (priv->ecals[i]) {
                g_hash_table_destroy (priv->ecals[i]);
                priv->ecals[i] = NULL;
            }
        }

        if (priv->html) {
            g_signal_handlers_disconnect_matched (priv->html, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, itip);
            g_object_weak_unref (G_OBJECT (priv->html), (GWeakNotify)html_destroyed, itip);
        }

        g_free (priv);
        itip->priv = NULL;
    }

    (* GTK_OBJECT_CLASS (e_itip_control_parent_class)->destroy) (obj);
}

GtkWidget *
e_itip_control_new (void)
{
    return g_object_new (E_TYPE_ITIP_CONTROL, NULL);
}

static void
find_my_address (EItipControl *itip, icalcomponent *ical_comp, icalparameter_partstat *status)
{
    EItipControlPrivate *priv;
    icalproperty *prop;
    gchar *my_alt_address = NULL;

    priv = itip->priv;

    for (prop = icalcomponent_get_first_property (ical_comp, ICAL_ATTENDEE_PROPERTY);
         prop != NULL;
         prop = icalcomponent_get_next_property (ical_comp, ICAL_ATTENDEE_PROPERTY)) {
        icalvalue *value;
        icalparameter *param;
        const gchar *attendee, *name;
        gchar *attendee_clean, *name_clean;
        EIterator *it;

        value = icalproperty_get_value (prop);
        if (value != NULL) {
            attendee = icalvalue_get_string (value);
            attendee_clean = g_strdup (itip_strip_mailto (attendee));
            attendee_clean = g_strstrip (attendee_clean);
        } else {
            attendee = NULL;
            attendee_clean = NULL;
        }

        param = icalproperty_get_first_parameter (prop, ICAL_CN_PARAMETER);
        if (param != NULL) {
            name = icalparameter_get_cn (param);
            name_clean = g_strdup (name);
            name_clean = g_strstrip (name_clean);
        } else {
            name = NULL;
            name_clean = NULL;
        }

        if (priv->delegator_address) {
            gchar *delegator_clean;

            delegator_clean = g_strdup (itip_strip_mailto (attendee));
            delegator_clean = g_strstrip (delegator_clean);

            /* If the mailer told us the address to use, use that */
            if (delegator_clean != NULL
                && !g_ascii_strcasecmp (attendee_clean, delegator_clean)) {
                priv->my_address = g_strdup (itip_strip_mailto (priv->delegator_address));
                priv->my_address = g_strstrip (priv->my_address);

                if (status) {
                    param = icalproperty_get_first_parameter (prop, ICAL_PARTSTAT_PARAMETER);
                    *status = param ? icalparameter_get_partstat (param) : ICAL_PARTSTAT_NEEDSACTION;
                }
            }

            g_free (delegator_clean);
        } else {
            it = e_list_get_iterator((EList *)priv->accounts);
            while (e_iterator_is_valid(it)) {
                const EAccount *account = e_iterator_get(it);

                /* Check for a matching address */
                if (attendee_clean != NULL
                    && !g_ascii_strcasecmp (account->id->address, attendee_clean)) {
                    priv->my_address = g_strdup (account->id->address);
                    if (status) {
                        param = icalproperty_get_first_parameter (prop, ICAL_PARTSTAT_PARAMETER);
                        *status = param ? icalparameter_get_partstat (param) : ICAL_PARTSTAT_NEEDSACTION;
                    }
                    g_free (attendee_clean);
                    g_free (name_clean);
                    g_free (my_alt_address);
                    g_object_unref(it);
                    return;
                }

                /* Check for a matching cname to fall back on */
                if (name_clean != NULL
                    && !g_ascii_strcasecmp (account->id->name, name_clean))
                    my_alt_address = g_strdup (attendee_clean);

                e_iterator_next(it);
            }
            g_object_unref(it);
        }

        g_free (attendee_clean);
        g_free (name_clean);
    }

    priv->my_address = my_alt_address;
    if (status)
        *status = ICAL_PARTSTAT_NEEDSACTION;
}

static icalproperty *
find_attendee (icalcomponent *ical_comp, const gchar *address)
{
    icalproperty *prop;

    if (address == NULL)
        return NULL;

    for (prop = icalcomponent_get_first_property (ical_comp, ICAL_ATTENDEE_PROPERTY);
         prop != NULL;
         prop = icalcomponent_get_next_property (ical_comp, ICAL_ATTENDEE_PROPERTY)) {
        icalvalue *value;
        const gchar *attendee;
        gchar *text;

        value = icalproperty_get_value (prop);
        if (!value)
            continue;

        attendee = icalvalue_get_string (value);

        text = g_strdup (itip_strip_mailto (attendee));
        text = g_strstrip (text);
        if (!g_ascii_strcasecmp (address, text)) {
            g_free (text);
            break;
        }
        g_free (text);
    }

    return prop;
}

static void
write_label_piece (EItipControl *itip, ECalComponentDateTime *dt,
                   GString *buffer,
           const gchar *stext, const gchar *etext,
           gboolean just_date)
{
    EItipControlPrivate *priv;
    struct tm tmp_tm;
    gchar time_buf[64];
    icaltimezone *zone = NULL;
    const gchar *display_name;

    priv = itip->priv;

    /* UTC times get converted to the current timezone. This is done for
       the COMPLETED property, which is always in UTC, and also because
       Outlook sends simple events as UTC times. */
    if (dt->value->is_utc) {
        zone = calendar_config_get_icaltimezone ();
        icaltimezone_convert_time (dt->value, icaltimezone_get_utc_timezone (), zone);
    }

    tmp_tm = icaltimetype_to_tm (dt->value);
    if (just_date)
        tmp_tm.tm_hour = tmp_tm.tm_min = tmp_tm.tm_sec = 0;

    if (stext != NULL)
        g_string_append (buffer, stext);

    e_time_format_date_and_time (&tmp_tm,
                     calendar_config_get_24_hour_format (),
                     FALSE, FALSE,
                     time_buf, sizeof (time_buf));
    g_string_append (buffer, time_buf);

    if (!dt->value->is_utc && dt->tzid) {
        zone = icalcomponent_get_timezone (priv->top_level, dt->tzid);
    }

    /* Output timezone after time, e.g. " America/New_York". */
    if (zone && !just_date) {
        /* Note that this returns UTF-8, since all iCalendar data is
           UTF-8. But it probably is not translated. */
        display_name = icaltimezone_get_display_name (zone);
        if (display_name && *display_name) {
            g_string_append_len (buffer, " <font size=-1>[", 16);

            /* We check if it is one of our builtin timezone names,
               in which case we call gettext to translate it. */
            if (icaltimezone_get_builtin_timezone (display_name)) {
                g_string_append_printf (buffer, "%s", _(display_name));
            } else {
                g_string_append_printf (buffer, "%s", display_name);
            }
            g_string_append_len (buffer, "]</font>", 8);
        }
    }

    if (etext != NULL)
        g_string_append (buffer, etext);
}

static const gchar *
nth (gint n)
{
    if (n == -1)
        return "last";
    else if (n < 1 || n > 31)
        return "?";
    else
        return e_cal_recur_nth[n];
}

static const gchar *dayname[] = {
    N_("Sunday"),
    N_("Monday"),
    N_("Tuesday"),
    N_("Wednesday"),
    N_("Thursday"),
    N_("Friday"),
    N_("Saturday")
};

static const gchar *
get_dayname (struct icalrecurrencetype *r, gint i)
{
    enum icalrecurrencetype_weekday day;

    day = icalrecurrencetype_day_day_of_week (r->by_day[i]);
    g_return_val_if_fail (day > 0 && day < 8, "?");

    return _(dayname[day - 1]);
}

static void
write_recurrence_piece (EItipControl *itip, ECalComponent *comp,
                        GString *buffer)
{
    GSList *rrules;
    struct icalrecurrencetype *r;
    gint i;

    g_string_append_len (buffer, "<b>Recurring:</b> ", 18);

    if (!e_cal_component_has_simple_recurrence (comp)) {
        g_string_append_printf (
            buffer, "%s", _("Yes. (Complex Recurrence)"));
        return;
    }

    e_cal_component_get_rrule_list (comp, &rrules);
    g_return_if_fail (rrules && !rrules->next);

    r = rrules->data;

    switch (r->freq) {
    case ICAL_DAILY_RECURRENCE:
                /* For Translators: In this can also be translated as "With the period of %d
                 day/days", where %d is a number. The entire sentence is of the form "Recurring:
                 Every %d day/days" */
        /* For Translators : 'Every day' is event Recurring every day */
        /* For Translators : 'Every %d days' is event Recurring every %d days. %d is a digit */
        g_string_append_printf (
            buffer, ngettext ("Every day",
            "Every %d days", r->interval),
            r->interval);
        break;

    case ICAL_WEEKLY_RECURRENCE:
        if (r->by_day[0] == ICAL_RECURRENCE_ARRAY_MAX) {
                        /* For Translators: In this can also be translated as "With the period of %d
                         week/weeks", where %d is a number. The entire sentence is of the form "Recurring:
                         Every %d week/weeks" */
            /* For Translators : 'Every week' is event Recurring every week */
            /* For Translators : 'Every %d weeks' is event Recurring every %d weeks. %d is a digit */
            g_string_append_printf (
                buffer, ngettext ("Every week",
                "Every %d weeks", r->interval),
                r->interval);
        } else {
            /* For Translators : 'Every week on' is event Recurring every week on (dayname) and (dayname) and (dayname) */
            /* For Translators : 'Every %d weeks on' is event Recurring: every %d weeks on (dayname) and (dayname). %d is a digit */
            g_string_append_printf (
                buffer, ngettext ("Every week on ",
                "Every %d weeks on ", r->interval),
                r->interval);

            for (i = 1; i < 8 && r->by_day[i] != ICAL_RECURRENCE_ARRAY_MAX; i++) {
                if (i > 1)
                    g_string_append_len (buffer, ", ", 2);
                g_string_append (buffer, get_dayname (r, i - 1));
            }
            if (i > 1)
                /* For Translators : 'and' is part of the sentence 'event recurring every week on (dayname) and (dayname)' */
                g_string_append_printf (buffer, "%s", _(" and "));
            g_string_append (buffer, get_dayname (r, i - 1));
        }
        break;

    case ICAL_MONTHLY_RECURRENCE:
        if (r->by_month_day[0] != ICAL_RECURRENCE_ARRAY_MAX) {
            /* For Translators : 'The %s day of' is part of the sentence 'event recurring on the (nth) day of every month.' */
            g_string_append_printf (
                buffer, _("The %s day of "),
                nth (r->by_month_day[0]));
        } else {
            gint pos;

            /* Outlook 2000 uses BYDAY=TU;BYSETPOS=2, and will not
               accept BYDAY=2TU. So we now use the same as Outlook
               by default. */

            pos = icalrecurrencetype_day_position (r->by_day[0]);
            if (pos == 0)
                pos = r->by_set_pos[0];

            /* For Translators : 'The %s %s of' is part of the sentence 'event recurring on the (nth) (dayname) of every month.'
               eg,third monday of every month */
            g_string_append_printf (
                buffer, _("The %s %s of "),
                nth (pos), get_dayname (r, 0));
        }

              /* For Translators: In this can also be translated as "With the period of %d
                 month/months", where %d is a number. The entire sentence is of the form "Recurring:
                 Every %d month/months" */
        /* For Translators : 'every month' is part of the sentence 'event recurring on the (nth) day of every month.' */
        /* For Translators : 'every %d months' is part of the sentence 'event recurring on the (nth) day of every %d months.'
         %d is a digit */
        g_string_append_printf (
            buffer, ngettext ("every month",
            "every %d months", r->interval),
            r->interval);
        break;

    case ICAL_YEARLY_RECURRENCE:
              /* For Translators: In this can also be translated as "With the period of %d
                 year/years", where %d is a number. The entire sentence is of the form "Recurring:
                 Every %d year/years" */
        /* For Translators : 'Every year' is event Recurring every year */
        /* For Translators : 'Every %d years' is event Recurring every %d years. %d is a digit */
        g_string_append_printf (
            buffer, ngettext ("Every year",
            "Every %d years", r->interval),
            r->interval);
        break;

    default:
        g_return_if_reached ();
    }

    if (r->count) {
          /* For Translators:'a total of %d time' is part of the sentence of the form 'event recurring every day,a total of % time.' %d is a digit*/
          /* For Translators:'a total of %d times' is part of the sentence of the form 'event recurring every day,a total of % times.' %d is a digit*/
        g_string_append_printf (
            buffer, ngettext ("a total of %d time",
            "a total of %d times", r->count), r->count);
    } else if (!icaltime_is_null_time (r->until)) {
        ECalComponentDateTime dt;

        /* FIXME This should get the tzid id, not the whole zone */
        dt.value = &r->until;
        dt.tzid = icaltimezone_get_tzid ((icaltimezone *)r->until.zone);

        write_label_piece (itip, &dt, buffer,
                   /* For Translators : ', ending on' is part of the sentence of the form 'event recurring every day, ending on (date).'*/
                   _(", ending on "), NULL, TRUE);
    }

    g_string_append_len (buffer, "<br>", 4);
}

static void
set_date_label (EItipControl *itip, GtkHTML *html, GtkHTMLStream *html_stream,
        ECalComponent *comp)
{
    ECalComponentDateTime datetime;
    GString *buffer;
    gchar *str;
    gboolean wrote = FALSE, task_completed = FALSE;
    ECalComponentVType type;

    buffer = g_string_sized_new (1024);
    type = e_cal_component_get_vtype (comp);

    e_cal_component_get_dtstart (comp, &datetime);
    if (datetime.value) {
        /* For Translators : 'starts' is starts:date implying a task starts on what date */
        str = g_strdup_printf ("<b>%s:</b>", _("Starts"));
        write_label_piece (itip, &datetime, buffer, str, "<br>", FALSE);
        gtk_html_write (html, html_stream, buffer->str, buffer->len);
        wrote = TRUE;
        g_free (str);
    }
    e_cal_component_free_datetime (&datetime);

    /* Reset the buffer. */
    g_string_truncate (buffer, 0);

    e_cal_component_get_dtend (comp, &datetime);
    if (datetime.value){
        /* For Translators : 'ends' is ends:date implying a task ends on what date */
        str = g_strdup_printf ("<b>%s:</b>", _("Ends"));
        write_label_piece (itip, &datetime, buffer, str, "<br>", FALSE);
        gtk_html_write (html, html_stream, buffer->str, buffer->len);
        wrote = TRUE;
        g_free (str);
    }
    e_cal_component_free_datetime (&datetime);

    /* Reset the buffer. */
    g_string_truncate (buffer, 0);

    if (e_cal_component_has_recurrences (comp)) {
        write_recurrence_piece (itip, comp, buffer);
        gtk_html_write (html, html_stream, buffer->str, buffer->len);
        wrote = TRUE;
    }

    /* Reset the buffer. */
    g_string_truncate (buffer, 0);

    datetime.tzid = NULL;
    e_cal_component_get_completed (comp, &datetime.value);
    if (type == E_CAL_COMPONENT_TODO && datetime.value) {
        /* Pass TRUE as is_utc, so it gets converted to the current
           timezone. */
        str = g_strdup_printf ("<b>%s:</b>", _("Completed"));
        datetime.value->is_utc = TRUE;
        write_label_piece (itip, &datetime, buffer, str, "<br>", FALSE);
        gtk_html_write (html, html_stream, buffer->str, buffer->len);
        wrote = TRUE;
        task_completed = TRUE;
        g_free (str);
    }
    e_cal_component_free_datetime (&datetime);

    /* Reset the buffer. */
    g_string_truncate (buffer, 0);

    e_cal_component_get_due (comp, &datetime);
    if (type == E_CAL_COMPONENT_TODO && !task_completed && datetime.value) {
        str = g_strdup_printf ("<b>%s:</b>", _("Due"));
        write_label_piece (itip, &datetime, buffer, str, "<br>", FALSE);
        gtk_html_write (html, html_stream, buffer->str, buffer->len);
        wrote = TRUE;
        g_free (str);
    }

    e_cal_component_free_datetime (&datetime);

    if (wrote)
        gtk_html_stream_printf (html_stream, "<br>");

    g_string_free (buffer, TRUE);
}

static void
set_message (GtkHTML *html, GtkHTMLStream *html_stream, const gchar *message, gboolean err)
{
    if (message == NULL)
        return;


    if (err) {
        gtk_html_stream_printf (html_stream, "<b><font color=\"#ff0000\">%s</font></b><br><br>", message);
    } else {
        gtk_html_stream_printf (html_stream, "<b>%s</b><br><br>", message);
    }
}

static void
write_error_html (EItipControl *itip, const gchar *itip_err)
{
    EItipControlPrivate *priv;
    GtkHTMLStream *html_stream;
    gchar *filename;

    priv = itip->priv;

    /* Html widget */
    html_stream = gtk_html_begin (GTK_HTML (priv->html));
    gtk_html_stream_printf (html_stream,
                "<html><head><title>%s</title></head>",
                _("iCalendar Information"));

    gtk_html_write (GTK_HTML (priv->html), html_stream,
            HTML_BODY_START, strlen(HTML_BODY_START));

    /* The table */
    gtk_html_stream_printf (html_stream, "<table width=450 cellspacing=\"0\" cellpadding=\"4\" border=\"0\">");
    /* The column for the image */
    gtk_html_stream_printf (html_stream, "<tr><td width=48 align=\"center\" valign=\"top\" rowspan=\"8\">");
    /* The image */
    filename = e_icon_factory_get_icon_filename ("stock_new-meeting", GTK_ICON_SIZE_DIALOG);
    gtk_html_stream_printf (html_stream, "<img src=\"%s\"></td>", filename);
    g_free (filename);

    gtk_html_stream_printf (html_stream, "<td align=\"left\" valign=\"top\">");

    /* Title */
    set_message (GTK_HTML (priv->html), html_stream, _("iCalendar Error"), TRUE);

    /* Error */
    gtk_html_write (GTK_HTML (priv->html), html_stream, itip_err, strlen(itip_err));

    /* Clean up */
    gtk_html_stream_printf (html_stream, "</td></tr></table>");

    gtk_html_write (GTK_HTML (priv->html), html_stream,
            HTML_BODY_END, strlen(HTML_BODY_END));
    gtk_html_write (GTK_HTML (priv->html), html_stream,
            HTML_FOOTER, strlen(HTML_FOOTER));

    gtk_html_end (GTK_HTML (priv->html), html_stream, GTK_HTML_STREAM_OK);
}

static void
write_html (EItipControl *itip, const gchar *itip_desc, const gchar *itip_title, const gchar *options)
{
    EItipControlPrivate *priv;
    GtkHTMLStream *html_stream;
    ECalComponentText text;
    ECalComponentOrganizer organizer;
    ECalComponentAttendee *attendee;
    GSList *attendees, *l = NULL;
    const gchar *string;
    gchar *html;
    const gchar *const_html;
    gchar *filename;
    gchar *str;

    priv = itip->priv;

    if (priv->html == NULL)
        return;

    /* Html widget */
    html_stream = gtk_html_begin (GTK_HTML (priv->html));
    gtk_html_stream_printf (html_stream,
                "<html><head><title>%s</title></head>",
                _("iCalendar Information"));
    gtk_html_write (GTK_HTML (priv->html), html_stream,
            HTML_BODY_START, strlen(HTML_BODY_START));

    /* The table */
    const_html = "<table width=450 cellspacing=\"0\" cellpadding=\"4\" border=\"0\">";
    gtk_html_write (GTK_HTML (priv->html), html_stream, const_html, strlen(const_html));

    /* The column for the image */
    const_html = "<tr><td width=48 align=\"center\" valign=\"top\" rowspan=\"8\">";
    gtk_html_write (GTK_HTML (priv->html), html_stream, const_html, strlen(const_html));

    /* The image */
    filename = e_icon_factory_get_icon_filename ("stock_new-meeting", GTK_ICON_SIZE_DIALOG);
    gtk_html_stream_printf (html_stream, "<img src=\"%s\"></td>", filename);
    g_free (filename);

    const_html = "<td align=\"left\" valign=\"top\">";
    gtk_html_write (GTK_HTML (priv->html), html_stream, const_html, strlen(const_html));

    switch (priv->method) {
    case ICAL_METHOD_REFRESH:
    case ICAL_METHOD_REPLY:
        /* An attendee sent this */
        e_cal_component_get_attendee_list (priv->comp, &attendees);
        if (attendees != NULL) {
            attendee = attendees->data;
            html = g_strdup_printf (itip_desc,
                        attendee->cn ?
                        attendee->cn :
                        itip_strip_mailto (attendee->value));
        } else {
            html = g_strdup_printf (itip_desc, _("An unknown person"));
        }
        break;
    case ICAL_METHOD_REQUEST:
        /* The organizer sent this */
        e_cal_component_get_organizer (priv->comp, &organizer);
        if (priv->delegator_address != NULL) {
            if (organizer.value != NULL)
                html = g_strdup_printf (itip_desc,
                            organizer.cn ?
                            organizer.cn :
                            itip_strip_mailto (organizer.value),
                            priv->delegator_name ?
                            priv->delegator_name :
                                    priv->delegator_address);
            else
                html = g_strdup_printf (itip_desc, _("An unknown person"),
                            priv->delegator_name ?
                            priv->delegator_name :
                                    priv->delegator_address);
        } else {
            if (organizer.value != NULL)
                html = g_strdup_printf (itip_desc,
                            organizer.cn ?
                            organizer.cn :
                            itip_strip_mailto (organizer.value));
            else
                html = g_strdup_printf (itip_desc, _("An unknown person"));
        }

        break;

    case ICAL_METHOD_PUBLISH:
    case ICAL_METHOD_ADD:
    case ICAL_METHOD_CANCEL:
    default:
        /* The organizer sent this */
        e_cal_component_get_organizer (priv->comp, &organizer);
        if (organizer.value != NULL)
            html = g_strdup_printf (itip_desc,
                        organizer.cn ?
                        organizer.cn :
                        itip_strip_mailto (organizer.value));
        else
            html = g_strdup_printf (itip_desc, _("An unknown person"));
        break;
    }
    gtk_html_write (GTK_HTML (priv->html), html_stream, html, strlen(html));
    g_free (html);

    /* Describe what the user can do */
    const_html = _("<br> Please review the following information, "
            "and then select an action from the menu below.");
    gtk_html_write (GTK_HTML (priv->html), html_stream, const_html, strlen(const_html));

    /* Separator */
    gtk_html_write (GTK_HTML (priv->html), html_stream, HTML_SEP, strlen (HTML_SEP));

    /* Title */
    set_message (GTK_HTML (priv->html), html_stream, itip_title, FALSE);

    /* Date information */
    set_date_label (itip, GTK_HTML (priv->html), html_stream, priv->comp);

    /* Summary */
    e_cal_component_get_summary (priv->comp, &text);
    str = g_strdup_printf ("<i>%s:</i>", _("None"));

    html = text.value ? e_text_to_html_full (text.value, E_TEXT_TO_HTML_CONVERT_NL, 0) : str;
    gtk_html_stream_printf (html_stream, "<b>%s</b><br>%s<br><br>",
                _("Summary:"), html);
    g_free (str);
    if (text.value)
        g_free (html);

    /* Location */
    e_cal_component_get_location (priv->comp, &string);
    if (string != NULL) {
        html = e_text_to_html_full (string, E_TEXT_TO_HTML_CONVERT_NL, 0);
        gtk_html_stream_printf (html_stream, "<b>%s</b><br>%s<br><br>",
                    _("Location:"), html);
        g_free (html);
    }

    /* Status */
    if (priv->method == ICAL_METHOD_REPLY) {
        GSList *alist;

        e_cal_component_get_attendee_list (priv->comp, &alist);

        if (alist != NULL) {
            ECalComponentAttendee *a = alist->data;

            gtk_html_stream_printf (html_stream, "<b>%s</b><br>",
                        _("Status:"));

            switch (a->status) {
            case ICAL_PARTSTAT_ACCEPTED:
                gtk_html_stream_printf (html_stream, "%s<br><br>",
                            _("Accepted"));
                break;
            case ICAL_PARTSTAT_TENTATIVE:
                gtk_html_stream_printf (html_stream, "%s<br><br>",
                            _("Tentatively Accepted"));
                break;
            case ICAL_PARTSTAT_DECLINED:
                gtk_html_stream_printf (html_stream, "%s<br><br>",
                            _("Declined"));
                break;
            default:
                gtk_html_stream_printf (html_stream, "%s<br><br>",
                            _("Unknown"));
            }
        }

        e_cal_component_free_attendee_list (alist);
    }

    /* Description */
    e_cal_component_get_description_list (priv->comp, &l);
    if (l)
        text = *((ECalComponentText *)l->data);

    if (l && text.value) {
        html = e_text_to_html_full (text.value, E_TEXT_TO_HTML_CONVERT_NL, 0);
        gtk_html_stream_printf (html_stream, "<b>%s</b><br>%s",
                    _("Description:"), html);
        g_free (html);
    }
    e_cal_component_free_text_list (l);

    /* Separator */
    gtk_html_write (GTK_HTML (priv->html), html_stream, HTML_SEP, strlen (HTML_SEP));

    /* Options */
    if (!e_itip_control_get_view_only (itip)) {
        if (options != NULL) {
            const_html = "</td></tr><tr><td valign=\"center\">";
            gtk_html_write (GTK_HTML (priv->html), html_stream, const_html, strlen (const_html));
            gtk_html_write (GTK_HTML (priv->html), html_stream, options, strlen (options));
        }
    }

    const_html = "</td></tr></table>";
    gtk_html_write (GTK_HTML (priv->html), html_stream, const_html, strlen(const_html));

    gtk_html_write (GTK_HTML (priv->html), html_stream,
            HTML_BODY_END, strlen(HTML_BODY_END));
    gtk_html_write (GTK_HTML (priv->html), html_stream,
            HTML_FOOTER, strlen(HTML_FOOTER));

    gtk_html_end (GTK_HTML (priv->html), html_stream, GTK_HTML_STREAM_OK);
}


static gchar *
get_publish_options (void)
{
    return g_strdup_printf ("<object classid=\"itip:publish_options\"></object>");
}

static gchar *
get_request_options (void)
{
    return g_strdup_printf ("<object classid=\"itip:request_options\"></object>");
}

static gchar *
get_request_fb_options (void)
{
    return g_strdup_printf ("<object classid=\"itip:freebusy_options\"></object>");
}

static gchar *
get_reply_options (void)
{
    return g_strdup_printf ("<object classid=\"itip:reply_options\"></object>");
}

static gchar *
get_refresh_options (void)
{
    return g_strdup_printf ("<object classid=\"itip:refresh_options\"></object>");
}

static gchar *
get_cancel_options (gboolean found, icalcomponent_kind kind)
{
    if (!found) {
        switch (kind) {
        case ICAL_VEVENT_COMPONENT:
            return g_strdup_printf ("<i>%s</i>", _("The meeting has been canceled, however it could not be found in your calendars"));
        case ICAL_VTODO_COMPONENT:
            return g_strdup_printf ("<i>%s</i>", _("The task has been canceled, however it could not be found in your task lists"));
        default:
            g_return_val_if_reached (NULL);
        }
    }

    return g_strdup_printf ("<object classid=\"itip:cancel_options\"></object>");
}


static ECalComponent *
get_real_item (EItipControl *itip)
{
    EItipControlPrivate *priv;
    ECalComponent *comp;
    icalcomponent *icalcomp;
    gboolean found = FALSE;
    const gchar *uid;

    priv = itip->priv;

    e_cal_component_get_uid (priv->comp, &uid);

    found = e_cal_get_object (priv->current_ecal, uid, NULL, &icalcomp, NULL);
    if (!found)
        return NULL;

    comp = e_cal_component_new ();
    if (!e_cal_component_set_icalcomponent (comp, icalcomp)) {
        g_object_unref (comp);
        icalcomponent_free (icalcomp);
        return NULL;
    }

    return comp;
}

static void
adjust_item (EItipControl *itip, ECalComponent *comp)
{
    ECalComponent *real_comp;

    real_comp = get_real_item (itip);
    if (real_comp != NULL) {
        ECalComponentText text;
        const gchar *string;
        GSList *l;

        e_cal_component_get_summary (real_comp, &text);
        e_cal_component_set_summary (comp, &text);
        e_cal_component_get_location (real_comp, &string);
        e_cal_component_set_location (comp, string);
        e_cal_component_get_description_list (real_comp, &l);
        e_cal_component_set_description_list (comp, l);
        e_cal_component_free_text_list (l);

        g_object_unref (real_comp);
    } else {
        ECalComponentText text = {_("Unknown"), NULL};

        e_cal_component_set_summary (comp, &text);
    }
}

static void
show_current_event (EItipControl *itip)
{
    EItipControlPrivate *priv;
    const gchar *itip_title, *itip_desc;
    gchar *options;
    gboolean show_selector = FALSE;

    priv = itip->priv;

    priv->type = E_CAL_SOURCE_TYPE_EVENT;

    switch (priv->method) {
    case ICAL_METHOD_PUBLISH:
        itip_desc = _("<b>%s</b> has published meeting information.");
        itip_title = _("Meeting Information");
        options = get_publish_options ();
        show_selector = TRUE;
        break;
    case ICAL_METHOD_REQUEST:
        if (priv->delegator_address != NULL)
            itip_desc = _("<b>%s</b> requests the presence of %s at a meeting.");
        else
            itip_desc = _("<b>%s</b> requests your presence at a meeting.");
        itip_title = _("Meeting Proposal");
        options = get_request_options ();
        show_selector = TRUE;
        break;
    case ICAL_METHOD_ADD:
        /* FIXME Whats going on here? */
        itip_desc = _("<b>%s</b> wishes to be added to an existing meeting.");
        itip_title = _("Meeting Update");
        options = get_publish_options ();
        break;
    case ICAL_METHOD_REFRESH:
        itip_desc = _("<b>%s</b> wishes to receive the latest meeting information.");
        itip_title = _("Meeting Update Request");
        options = get_refresh_options ();

        /* Provide extra info, since its not in the component */
        adjust_item (itip, priv->comp);
        break;
    case ICAL_METHOD_REPLY:
        itip_desc = _("<b>%s</b> has replied to a meeting request.");
        itip_title = _("Meeting Reply");
        options = get_reply_options ();

        /* Provide extra info, since might not be in the component */
        adjust_item (itip, priv->comp);
        break;
    case ICAL_METHOD_CANCEL:
        itip_desc = _("<b>%s</b> has canceled a meeting.");
        itip_title = _("Meeting Cancelation");
        /* FIXME priv->current_ecal will always be NULL so the
         * user won't see an error message, the OK button will
         * just be de-sensitized */
        options = get_cancel_options (TRUE, ICAL_VEVENT_COMPONENT);

        /* Provide extra info, since might not be in the component */
        adjust_item (itip, priv->comp);
        break;
    default:
        itip_desc = _("<b>%s</b> has sent an unintelligible message.");
        itip_title = _("Bad Meeting Message");
        options = NULL;
    }

    write_html (itip, itip_desc, itip_title, options);
    g_free (options);

    if (priv->calendar_uid)
        priv->current_ecal = start_calendar_server_by_uid (itip, priv->calendar_uid, priv->type);
    else
        find_server (itip, priv->comp, show_selector);
}

static void
show_current_todo (EItipControl *itip)
{
    EItipControlPrivate *priv;
    const gchar *itip_title, *itip_desc;
    gchar *options;
    gboolean show_selector = FALSE;

    priv = itip->priv;

    priv->type = E_CAL_SOURCE_TYPE_TODO;

    switch (priv->method) {
    case ICAL_METHOD_PUBLISH:
        itip_desc = _("<b>%s</b> has published task information.");
        itip_title = _("Task Information");
        options = get_publish_options ();
        show_selector = TRUE;
        break;
    case ICAL_METHOD_REQUEST:
        /* FIXME Does this need to handle like events above? */
        if (priv->delegator_address != NULL)
            itip_desc = _("<b>%s</b> requests %s to perform a task.");
        else
            itip_desc = _("<b>%s</b> requests you perform a task.");
        itip_title = _("Task Proposal");
        options = get_request_options ();
        show_selector = TRUE;
        break;
    case ICAL_METHOD_ADD:
        /* FIXME Whats going on here? */
        itip_desc = _("<b>%s</b> wishes to be added to an existing task.");
        itip_title = _("Task Update");
        options = get_publish_options ();
        break;
    case ICAL_METHOD_REFRESH:
        itip_desc = _("<b>%s</b> wishes to receive the latest task information.");
        itip_title = _("Task Update Request");
        options = get_refresh_options ();

        /* Provide extra info, since its not in the component */
        adjust_item (itip, priv->comp);
        break;
    case ICAL_METHOD_REPLY:
        itip_desc = _("<b>%s</b> has replied to a task assignment.");
        itip_title = _("Task Reply");
        options = get_reply_options ();

        /* Provide extra info, since might not be in the component */
        adjust_item (itip, priv->comp);
        break;
    case ICAL_METHOD_CANCEL:
        itip_desc = _("<b>%s</b> has canceled a task.");
        itip_title = _("Task Cancelation");
        /* FIXME priv->current_ecal will always be NULL so the
         * user won't see an error message, the OK button will
         * just be de-sensitized */
        options = get_cancel_options (TRUE, ICAL_VTODO_COMPONENT);

        /* Provide extra info, since might not be in the component */
        adjust_item (itip, priv->comp);
        break;
    default:
        itip_desc = _("<b>%s</b> has sent an unintelligible message.");
        itip_title = _("Bad Task Message");
        options = NULL;
    }

    write_html (itip, itip_desc, itip_title, options);
    g_free (options);

    if (priv->calendar_uid)
        priv->current_ecal = start_calendar_server_by_uid (itip, priv->calendar_uid, priv->type);
    else
        find_server (itip, priv->comp, show_selector);
}

static void
show_current_freebusy (EItipControl *itip)
{
    EItipControlPrivate *priv;
    const gchar *itip_title, *itip_desc;
    gchar *options;

    priv = itip->priv;

    switch (priv->method) {
    case ICAL_METHOD_PUBLISH:
        itip_desc = _("<b>%s</b> has published free/busy information.");
        itip_title = _("Free/Busy Information");
        options = NULL;
        break;
    case ICAL_METHOD_REQUEST:
        itip_desc = _("<b>%s</b> requests your free/busy information.");
        itip_title = _("Free/Busy Request");
        options = get_request_fb_options ();
        break;
    case ICAL_METHOD_REPLY:
        itip_desc = _("<b>%s</b> has replied to a free/busy request.");
        itip_title = _("Free/Busy Reply");
        options = NULL;
        break;
    default:
        itip_desc = _("<b>%s</b> has sent an unintelligible message.");
        itip_title = _("Bad Free/Busy Message");
        options = NULL;
    }

    write_html (itip, itip_desc, itip_title, options);
    g_free (options);
}

static icalcomponent *
get_next (icalcompiter *iter)
{
    icalcomponent *ret = NULL;
    icalcomponent_kind kind;

    do {
        icalcompiter_next (iter);
        ret = icalcompiter_deref (iter);
        if (ret == NULL)
            break;
        kind = icalcomponent_isa (ret);
    } while (ret != NULL
         && kind != ICAL_VEVENT_COMPONENT
         && kind != ICAL_VTODO_COMPONENT
         && kind != ICAL_VFREEBUSY_COMPONENT);

    return ret;
}

static void
show_current (EItipControl *itip)
{
    EItipControlPrivate *priv;
    ECalComponentVType type;
    icalcomponent *alarm_comp;
    icalcompiter alarm_iter;
    icalproperty *prop;

    priv = itip->priv;

    g_object_ref (itip);

    if (priv->comp)
        g_object_unref (priv->comp);
    priv->current_ecal = NULL;

    /* Determine any delegate sections */
    prop = icalcomponent_get_first_property (priv->ical_comp, ICAL_X_PROPERTY);
    while (prop) {
        const gchar *x_name, *x_val;

        x_name = icalproperty_get_x_name (prop);
        x_val = icalproperty_get_x (prop);

        if (!strcmp (x_name, "X-EVOLUTION-DELEGATOR-CALENDAR-UID"))
            e_itip_control_set_calendar_uid (itip, x_val);
        else if (!strcmp (x_name, "X-EVOLUTION-DELEGATOR-CALENDAR-URI"))
            g_warning (G_STRLOC ": X-EVOLUTION-DELEGATOR-CALENDAR-URI used");
        else if (!strcmp (x_name, "X-EVOLUTION-DELEGATOR-ADDRESS"))
            e_itip_control_set_delegator_address (itip, x_val);
        else if (!strcmp (x_name, "X-EVOLUTION-DELEGATOR-NAME"))
            e_itip_control_set_delegator_name (itip, x_val);

        prop = icalcomponent_get_next_property (priv->ical_comp, ICAL_X_PROPERTY);
    }

    /* Strip out alarms for security purposes */
    alarm_iter = icalcomponent_begin_component (priv->ical_comp, ICAL_VALARM_COMPONENT);
    while ((alarm_comp = icalcompiter_deref (&alarm_iter)) != NULL) {
        icalcompiter_next (&alarm_iter);

        icalcomponent_remove_component (priv->ical_comp, alarm_comp);
        icalcomponent_free (alarm_comp);
    }

    priv->comp = e_cal_component_new ();
    if (!e_cal_component_set_icalcomponent (priv->comp, priv->ical_comp)) {
        write_error_html (itip, _("The message does not appear to be properly formed"));
        g_object_unref (priv->comp);
        priv->comp = NULL;
        g_object_unref (itip);
        return;
    };

    /* Add default reminder if the config says so */
    if (calendar_config_get_use_default_reminder ()) {
        ECalComponentAlarm *acomp;
        gint interval;
        CalUnits units;
        ECalComponentAlarmTrigger trigger;

        interval = calendar_config_get_default_reminder_interval ();
        units = calendar_config_get_default_reminder_units ();

        acomp = e_cal_component_alarm_new ();

        e_cal_component_alarm_set_action (acomp, E_CAL_COMPONENT_ALARM_DISPLAY);

        trigger.type = E_CAL_COMPONENT_ALARM_TRIGGER_RELATIVE_START;
        memset (&trigger.u.rel_duration, 0, sizeof (trigger.u.rel_duration));

        trigger.u.rel_duration.is_neg = TRUE;

        switch (units) {
        case CAL_MINUTES:
            trigger.u.rel_duration.minutes = interval;
            break;
        case CAL_HOURS:
            trigger.u.rel_duration.hours = interval;
            break;
        case CAL_DAYS:
            trigger.u.rel_duration.days = interval;
            break;
        default:
            g_return_if_reached ();
        }

        e_cal_component_alarm_set_trigger (acomp, trigger);
        e_cal_component_add_alarm (priv->comp, acomp);

        e_cal_component_alarm_free (acomp);
    }

    type = e_cal_component_get_vtype (priv->comp);

    switch (type) {
    case E_CAL_COMPONENT_EVENT:
        show_current_event (itip);
        break;
    case E_CAL_COMPONENT_TODO:
        show_current_todo (itip);
        break;
    case E_CAL_COMPONENT_FREEBUSY:
        show_current_freebusy (itip);
        break;
    default:
        write_error_html (itip, _("The message contains only unsupported requests."));
    }

    find_my_address (itip, priv->ical_comp, NULL);

    g_object_unref (itip);
}

void
e_itip_control_set_data (EItipControl *itip, const gchar *text)
{
    EItipControlPrivate *priv;
    icalproperty *prop;
    icalcomponent_kind kind = ICAL_NO_COMPONENT;
    icalcomponent *tz_comp;
    icalcompiter tz_iter;

    priv = itip->priv;
    if (priv == NULL)
        return;

    clean_up (itip);

    if (text == NULL || *text == '\0') {
        gtk_html_load_from_string (GTK_HTML (priv->html), " ", 1);
        return;
    }

    priv->vcalendar = g_strdup (text);
    priv->top_level = e_cal_util_new_top_level ();

    priv->main_comp = icalparser_parse_string (priv->vcalendar);
    if (priv->main_comp == NULL || !is_icalcomp_valid (priv->main_comp)) {
        write_error_html (itip, _("The attachment does not contain a valid calendar message"));

        if (priv->main_comp) {
            icalcomponent_free (priv->main_comp);
            priv->main_comp = NULL;
        }

        return;
    }

    prop = icalcomponent_get_first_property (priv->main_comp, ICAL_METHOD_PROPERTY);
    if (prop == NULL) {
        priv->method = ICAL_METHOD_PUBLISH;
    } else {
        priv->method = icalproperty_get_method (prop);
    }

    tz_iter = icalcomponent_begin_component (priv->main_comp, ICAL_VTIMEZONE_COMPONENT);
    while ((tz_comp = icalcompiter_deref (&tz_iter)) != NULL) {
        icalcomponent *clone;

        clone = icalcomponent_new_clone (tz_comp);
        icalcomponent_add_component (priv->top_level, clone);

        icalcompiter_next (&tz_iter);
    }

    priv->iter = icalcomponent_begin_component (priv->main_comp, ICAL_ANY_COMPONENT);
    priv->ical_comp = icalcompiter_deref (&priv->iter);
    if (priv->ical_comp != NULL) {
        kind = icalcomponent_isa (priv->ical_comp);
        if (kind != ICAL_VEVENT_COMPONENT
            && kind != ICAL_VTODO_COMPONENT
            && kind != ICAL_VFREEBUSY_COMPONENT)
            priv->ical_comp = get_next (&priv->iter);
    }

    if (priv->ical_comp == NULL) {
        write_error_html (itip, _("The attachment has no viewable calendar items"));
        return;
    }

    priv->total = icalcomponent_count_components (priv->main_comp, ICAL_VEVENT_COMPONENT);
    priv->total += icalcomponent_count_components (priv->main_comp, ICAL_VTODO_COMPONENT);
    priv->total += icalcomponent_count_components (priv->main_comp, ICAL_VFREEBUSY_COMPONENT);

    if (priv->total > 0)
        priv->current = 1;
    else
        priv->current = 0;

    show_current (itip);
}

gchar *
e_itip_control_get_data (EItipControl *itip)
{
    EItipControlPrivate *priv;

    priv = itip->priv;

    return g_strdup (priv->vcalendar);
}

gint
e_itip_control_get_data_size (EItipControl *itip)
{
    EItipControlPrivate *priv;

    priv = itip->priv;

    if (priv->vcalendar == NULL)
        return 0;

    return strlen (priv->vcalendar);
}

void
e_itip_control_set_from_address (EItipControl *itip, const gchar *address)
{
    EItipControlPrivate *priv;

    priv = itip->priv;

    if (priv->from_address)
        g_free (priv->from_address);

    priv->from_address = g_strdup (address);
}

const gchar *
e_itip_control_get_from_address (EItipControl *itip)
{
    EItipControlPrivate *priv;

    priv = itip->priv;

    return priv->from_address;
}

void
e_itip_control_set_view_only (EItipControl *itip, gint view_only)
{
    EItipControlPrivate *priv;

    priv = itip->priv;

    priv->view_only = view_only;
}

gint
e_itip_control_get_view_only (EItipControl *itip)
{
    EItipControlPrivate *priv;

    priv = itip->priv;

    return priv->view_only;
}


void
e_itip_control_set_delegator_address (EItipControl *itip, const gchar *address)
{
    EItipControlPrivate *priv;

    priv = itip->priv;

    if (priv->delegator_address)
        g_free (priv->delegator_address);

    priv->delegator_address = g_strdup (address);
}

const gchar *
e_itip_control_get_delegator_address (EItipControl *itip)
{
    EItipControlPrivate *priv;

    priv = itip->priv;

    return priv->delegator_address;
}


void
e_itip_control_set_delegator_name (EItipControl *itip, const gchar *name)
{
    EItipControlPrivate *priv;

    priv = itip->priv;

    if (priv->delegator_name)
        g_free (priv->delegator_name);

    priv->delegator_name = g_strdup (name);
}

const gchar *
e_itip_control_get_delegator_name (EItipControl *itip)
{
    EItipControlPrivate *priv;

    priv = itip->priv;

    return priv->delegator_name;
}

void
e_itip_control_set_calendar_uid (EItipControl *itip, const gchar *uri)
{
    EItipControlPrivate *priv;

    priv = itip->priv;

    if (priv->calendar_uid)
        g_free (priv->calendar_uid);

    priv->calendar_uid = g_strdup (uri);
}

const gchar *
e_itip_control_get_calendar_uid (EItipControl *itip)
{
    EItipControlPrivate *priv;

    priv = itip->priv;

    return priv->calendar_uid;
}


static gboolean
change_status (icalcomponent *ical_comp, const gchar *address, icalparameter_partstat status)
{
    icalproperty *prop;

    prop = find_attendee (ical_comp, address);
    if (prop) {
        icalparameter *param;

        icalproperty_remove_parameter (prop, ICAL_PARTSTAT_PARAMETER);
        param = icalparameter_new_partstat (status);
        icalproperty_add_parameter (prop, param);
    } else {
        icalparameter *param;

        if (address != NULL) {
            prop = icalproperty_new_attendee (address);
            icalcomponent_add_property (ical_comp, prop);

            param = icalparameter_new_role (ICAL_ROLE_OPTPARTICIPANT);
            icalproperty_add_parameter (prop, param);

            param = icalparameter_new_partstat (status);
            icalproperty_add_parameter (prop, param);
        } else {
            EAccount *a;

            a = itip_addresses_get_default ();

            prop = icalproperty_new_attendee (a->id->address);
            icalcomponent_add_property (ical_comp, prop);

            param = icalparameter_new_cn (a->id->name);
            icalproperty_add_parameter (prop, param);

            param = icalparameter_new_role (ICAL_ROLE_REQPARTICIPANT);
            icalproperty_add_parameter (prop, param);

            param = icalparameter_new_partstat (status);
            icalproperty_add_parameter (prop, param);
        }
    }

    return TRUE;
}

static void
update_item (EItipControl *itip)
{
    EItipControlPrivate *priv;
    struct icaltimetype stamp;
    gchar *str;
    icalproperty *prop;
    icalcomponent *clone;
    GtkWidget *dialog;
    GError *error = NULL;

    priv = itip->priv;

    /* Set X-MICROSOFT-CDO-REPLYTIME to record the time at which
     * the user accepted/declined the request. (Outlook ignores
     * SEQUENCE in REPLY reponses and instead requires that each
     * updated response have a later REPLYTIME than the previous
     * one.) This also ends up getting saved in our own copy of
     * the meeting, though there's currently no way to see that
     * information (unless it's being saved to an Exchange folder
     * and you then look at it in Outlook).
     */
    stamp = icaltime_current_time_with_zone (icaltimezone_get_utc_timezone ());
    str = icaltime_as_ical_string_r (stamp);
    prop = icalproperty_new_x (str);
    g_free (str);
    icalproperty_set_x_name (prop, "X-MICROSOFT-CDO-REPLYTIME");
    icalcomponent_add_property (priv->ical_comp, prop);

    clone = icalcomponent_new_clone (priv->ical_comp);
    icalcomponent_add_component (priv->top_level, clone);
    icalcomponent_set_method (priv->top_level, priv->method);

    if (!e_cal_receive_objects (priv->current_ecal, priv->top_level, &error)) {
        dialog = gtk_message_dialog_new (
            NULL, 0,
            GTK_MESSAGE_ERROR,
            GTK_BUTTONS_OK,
            "%s", error->message);
        g_error_free (error);
    } else {
        dialog = gtk_message_dialog_new (
            NULL, 0,
            GTK_MESSAGE_INFO,
            GTK_BUTTONS_OK,
            "%s", _("Update complete\n"));
    }
    gtk_dialog_run (GTK_DIALOG (dialog));
    gtk_widget_destroy (dialog);

    icalcomponent_remove_component (priv->top_level, clone);
    icalcomponent_free (clone);
}

static void
update_attendee_status (EItipControl *itip)
{
    EItipControlPrivate *priv;
    ECalComponent *comp = NULL;
    icalcomponent *icalcomp = NULL;
    const gchar *uid;
    GtkWidget *dialog;
    GError *error = NULL;

    priv = itip->priv;

    /* Obtain our version */
    e_cal_component_get_uid (priv->comp, &uid);
    if (e_cal_get_object (priv->current_ecal, uid, NULL, &icalcomp, NULL)) {
        GSList *attendees;

        comp = e_cal_component_new ();
        if (!e_cal_component_set_icalcomponent (comp, icalcomp)) {
            icalcomponent_free (icalcomp);

            dialog = gtk_message_dialog_new (
                NULL, 0,
                GTK_MESSAGE_WARNING,
                GTK_BUTTONS_OK,
                "%s", _("Object is invalid and "
                "cannot be updated\n"));
        } else {
            e_cal_component_get_attendee_list (priv->comp, &attendees);
            if (attendees != NULL) {
                ECalComponentAttendee *a = attendees->data;
                icalproperty *prop;

                prop = find_attendee (icalcomp, itip_strip_mailto (a->value));

                if (prop == NULL) {
                    gint response;

                    dialog = gtk_message_dialog_new (
                        NULL, GTK_DIALOG_MODAL,
                        GTK_MESSAGE_QUESTION,
                        GTK_BUTTONS_YES_NO,
                        "%s", _("This response is not from a "
                        "current attendee.  Add as an attendee?"));
                    response = gtk_dialog_run (GTK_DIALOG (dialog));
                    gtk_widget_destroy (dialog);

                    if (response == GTK_RESPONSE_YES) {
                        change_status (icalcomp,
                                   itip_strip_mailto (a->value),
                                   a->status);
                        e_cal_component_rescan (comp);
                    } else {
                        goto cleanup;
                    }
                } else if (a->status == ICAL_PARTSTAT_NONE || a->status == ICAL_PARTSTAT_X) {
                    dialog = gtk_message_dialog_new (
                        NULL, 0,
                        GTK_MESSAGE_WARNING,
                        GTK_BUTTONS_OK,
                        "%s", _("Attendee status could not be "
                        "updated because of an invalid status!\n"));
                    goto run;
                } else {
                    change_status (icalcomp,
                               itip_strip_mailto (a->value),
                               a->status);
                    e_cal_component_rescan (comp);
                }
            }
        }

        if (!e_cal_modify_object (priv->current_ecal, icalcomp, CALOBJ_MOD_ALL, &error)) {
            dialog = gtk_message_dialog_new (
                NULL, 0,
                GTK_MESSAGE_WARNING,
                GTK_BUTTONS_OK,
                "%s", error->message);
            g_error_free (error);
        } else {
            dialog = gtk_message_dialog_new (
                NULL, 0,
                GTK_MESSAGE_INFO,
                GTK_BUTTONS_OK,
                "%s", _("Attendee status updated\n"));
        }
    } else {
        dialog = gtk_message_dialog_new (
            NULL, 0,
            GTK_MESSAGE_WARNING,
            GTK_BUTTONS_OK,
            "%s", _("Attendee status can not be updated "
            "because the item no longer exists"));
    }

 run:
    gtk_dialog_run (GTK_DIALOG (dialog));
    gtk_widget_destroy (dialog);

 cleanup:
    if (comp != NULL)
        g_object_unref (comp);
}

static void
send_item (EItipControl *itip)
{
    EItipControlPrivate *priv;
    ECalComponent *comp;
    GtkWidget *dialog;

    priv = itip->priv;

    comp = get_real_item (itip);

    if (comp != NULL) {
        itip_send_comp (E_CAL_COMPONENT_METHOD_REQUEST, comp, priv->current_ecal, NULL, NULL, NULL, TRUE);
        g_object_unref (comp);
        dialog = gtk_message_dialog_new (
            NULL, 0,
            GTK_MESSAGE_INFO,
            GTK_BUTTONS_OK,
            "%s", _("Item sent!\n"));
    } else {
        dialog = gtk_message_dialog_new (
            NULL, 0,
            GTK_MESSAGE_WARNING,
            GTK_BUTTONS_OK,
            "%s", _("The item could not be sent!\n"));
    }
    gtk_dialog_run (GTK_DIALOG (dialog));
    gtk_widget_destroy (dialog);
}

static void
send_freebusy (EItipControl *itip)
{
    EItipControlPrivate *priv;
    ECalComponentDateTime datetime;
    time_t start, end;
    GtkWidget *dialog;
    GList *comp_list = NULL;
    icaltimezone *zone;

    priv = itip->priv;

    e_cal_component_get_dtstart (priv->comp, &datetime);
    if (datetime.tzid) {
        zone = icalcomponent_get_timezone (priv->top_level,
                           datetime.tzid);
    } else {
        zone = NULL;
    }
    start = icaltime_as_timet_with_zone (*datetime.value, zone);
    e_cal_component_free_datetime (&datetime);

    e_cal_component_get_dtend (priv->comp, &datetime);
    if (datetime.tzid) {
        zone = icalcomponent_get_timezone (priv->top_level,
                           datetime.tzid);
    } else {
        zone = NULL;
    }
    end = icaltime_as_timet_with_zone (*datetime.value, zone);
    e_cal_component_free_datetime (&datetime);

    if (e_cal_get_free_busy (priv->current_ecal, NULL, start, end, &comp_list, NULL)) {
        GList *l;

        for (l = comp_list; l; l = l->next) {
            ECalComponent *comp = E_CAL_COMPONENT (l->data);
            itip_send_comp (E_CAL_COMPONENT_METHOD_REPLY, comp, priv->current_ecal, NULL, NULL, NULL, TRUE);

            g_object_unref (comp);
        }
        dialog = gtk_message_dialog_new (
            NULL, 0,
            GTK_MESSAGE_INFO,
            GTK_BUTTONS_OK,
            "%s", _("Item sent!\n"));

        g_list_free (comp_list);
    } else {
        dialog = gtk_message_dialog_new (
            NULL, 0,
            GTK_MESSAGE_WARNING,
            GTK_BUTTONS_OK,
            "%s", _("The item could not be sent!\n"));
    }
    gtk_dialog_run (GTK_DIALOG (dialog));
    gtk_widget_destroy (dialog);
}

static void
url_requested_cb (GtkHTML *html, const gchar *url, GtkHTMLStream *handle, gpointer data)
{   guchar buffer[4096];
    gint len, fd;

    if ((fd = g_open (url, O_RDONLY|O_BINARY, 0)) == -1) {
        g_warning ("%s", g_strerror (errno));
        return;
    }

        while ((len = read (fd, buffer, 4096)) > 0) {
        gtk_html_write (html, handle, (gchar *)buffer, len);
    }

    if (len < 0) {
        /* check to see if we stopped because of an error */
        gtk_html_end (html, handle, GTK_HTML_STREAM_ERROR);
        g_warning ("%s", g_strerror (errno));
        return;
    }
    /* done with no errors */
    gtk_html_end (html, handle, GTK_HTML_STREAM_OK);
    close (fd);
}

static GtkWidget *
create_combo_box (void)
{
    GtkComboBox *combo;
    GtkCellRenderer *cell;
    GtkListStore *store;

    combo = GTK_COMBO_BOX (gtk_combo_box_new ());

    store = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT);
    gtk_combo_box_set_model (combo, GTK_TREE_MODEL (store));
    g_object_unref (store);

    gtk_cell_layout_clear (GTK_CELL_LAYOUT (combo));

    cell = gtk_cell_renderer_text_new ();
    gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo), cell, TRUE);
    gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo), cell,
                                  "text", 0,
                                  NULL);

    return GTK_WIDGET (combo);
}

static void
option_activated_cb (GtkWidget *widget, gpointer data)
{
    EItipControl *itip = E_ITIP_CONTROL (data);
    EItipControlPrivate *priv;
    GtkTreeIter iter;
    gint act;

    priv = itip->priv;

    g_return_if_fail (gtk_combo_box_get_active_iter (GTK_COMBO_BOX (widget), &iter));

    gtk_tree_model_get (gtk_combo_box_get_model (GTK_COMBO_BOX (widget)), &iter, 1, &act, -1);

    priv->action = act;
}

static void
add_option (EItipControl *itip, GtkWidget *combo, const gchar *text, gchar action)
{
    GtkTreeIter iter;
    GtkListStore *store;

    store = GTK_LIST_STORE (gtk_combo_box_get_model (GTK_COMBO_BOX (combo)));

    gtk_list_store_append (store, &iter);
    gtk_list_store_set (
        store, &iter,
        0, text,
        1, (gint) action,
        -1);

    if (gtk_combo_box_get_active (GTK_COMBO_BOX (combo)) == -1) {
        gtk_combo_box_set_active (GTK_COMBO_BOX (combo), 0);
        g_signal_connect (combo, "changed", G_CALLBACK (option_activated_cb), itip);
    }
}

static void
insert_boxes (GtkHTMLEmbedded *eb, EItipControl *itip)
{
    EItipControlPrivate *priv;

    priv = itip->priv;

    priv->vbox.widget = gtk_vbox_new (FALSE, 12);
    g_object_add_weak_pointer (G_OBJECT (priv->vbox.widget), &priv->vbox.pointer);
    gtk_container_add (GTK_CONTAINER (eb), priv->vbox.widget);
    gtk_widget_show (priv->vbox.widget);

    priv->hbox.widget = gtk_hbox_new (FALSE, 6);
    g_object_add_weak_pointer (G_OBJECT (priv->hbox.widget), &priv->hbox.pointer);

    gtk_box_pack_start (GTK_BOX (priv->vbox.widget), priv->hbox.widget, FALSE, TRUE, 0);
    gtk_widget_show (priv->hbox.widget);
}

static void
insert_label (GtkWidget *hbox)
{
    GtkWidget *label;
    gchar *text;

    text = g_strdup_printf ("<b>%s</b>", _("Choose an action:"));
    label = gtk_label_new (NULL);
    gtk_label_set_markup (GTK_LABEL (label), text);
    g_free (text);

    gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, TRUE, 0);
    gtk_widget_show (label);
}

static void
rsvp_clicked_cb (GtkWidget *widget, gpointer data)
{
    EItipControl *itip = E_ITIP_CONTROL (data);
    EItipControlPrivate *priv;

    priv = itip->priv;

    priv->rsvp = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget));
}

static void
insert_rsvp (GtkWidget *hbox, EItipControl *itip)
{
    EItipControlPrivate *priv;
    GtkWidget *btn;

    priv = itip->priv;

    /* To translators: RSVP means "please reply" */
    btn = gtk_check_button_new_with_label (_("RSVP"));
    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (btn), TRUE);
    priv->rsvp = TRUE;

    g_signal_connect (btn, "clicked", G_CALLBACK (rsvp_clicked_cb), itip);

    gtk_box_pack_start (GTK_BOX (hbox), btn, FALSE, TRUE, 0);
    gtk_widget_show (btn);
}

static void
insert_ok (GtkWidget *hbox, EItipControl *itip)
{
    EItipControlPrivate *priv;
    priv = itip->priv;

    priv->ok.widget = gtk_button_new_from_stock (GTK_STOCK_OK);
    g_object_add_weak_pointer (G_OBJECT (priv->ok.widget), &priv->ok.pointer);

    g_signal_connect (priv->ok.widget, "clicked", G_CALLBACK (ok_clicked_cb), itip);

    set_ok_sens (itip);

    gtk_box_pack_start (GTK_BOX (hbox), priv->ok.widget, FALSE, TRUE, 0);
    gtk_widget_show (priv->ok.widget);
}

static gboolean
publish_options_object (EItipControl *itip, GtkHTML *html, GtkHTMLEmbedded *eb)
{
    EItipControlPrivate *priv;
    GtkWidget *combo;

    priv = itip->priv;

    insert_boxes (eb, itip);
    insert_label (priv->hbox.widget);

    combo = create_combo_box ();

    add_option (itip, combo, _("Update"), 'U');
    priv->action = 'U';

    gtk_box_pack_start (GTK_BOX (priv->hbox.widget), combo, FALSE, TRUE, 0);
    gtk_widget_show (combo);

    insert_ok (priv->hbox.widget, itip);

    return TRUE;
}

static gboolean
request_options_object (EItipControl *itip, GtkHTML *html, GtkHTMLEmbedded *eb)
{
    EItipControlPrivate *priv;
    GtkWidget *combo;

    priv = itip->priv;

    insert_boxes (eb, itip);
    insert_label (priv->hbox.widget);

    combo = create_combo_box ();

    add_option (itip, combo, _("Accept"), 'A');
    add_option (itip, combo, _("Tentatively accept"), 'T');
    add_option (itip, combo, _("Decline"), 'D');
    priv->action = 'A';

    gtk_box_pack_start (GTK_BOX (priv->hbox.widget), combo, FALSE, TRUE, 0);
    gtk_widget_show (combo);

    insert_rsvp (priv->hbox.widget, itip);
    insert_ok (priv->hbox.widget, itip);

    return TRUE;
}

static gboolean
freebusy_options_object (EItipControl *itip, GtkHTML *html, GtkHTMLEmbedded *eb)
{
    EItipControlPrivate *priv;
    GtkWidget *combo;

    priv = itip->priv;

    insert_boxes (eb, itip);
    insert_label (priv->hbox.widget);

    combo = create_combo_box ();

    add_option (itip, combo, _("Send Free/Busy Information"), 'F');
    priv->action = 'F';

    gtk_container_add (GTK_CONTAINER (priv->hbox.widget), combo);
    gtk_widget_show (combo);

    insert_ok (priv->hbox.widget, itip);

    return TRUE;
}

static gboolean
reply_options_object (EItipControl *itip, GtkHTML *html, GtkHTMLEmbedded *eb)
{
    EItipControlPrivate *priv;
    GtkWidget *combo;

    priv = itip->priv;

    insert_boxes (eb, itip);
    insert_label (priv->hbox.widget);

    combo = create_combo_box ();

    add_option (itip, combo, _("Update respondent status"), 'R');
    priv->action = 'R';

    gtk_container_add (GTK_CONTAINER (priv->hbox.widget), combo);
    gtk_widget_show (combo);

    insert_ok (priv->hbox.widget, itip);

    return TRUE;
}

static gboolean
refresh_options_object (EItipControl *itip, GtkHTML *html, GtkHTMLEmbedded *eb)
{
    EItipControlPrivate *priv;
    GtkWidget *combo;

    priv = itip->priv;

    insert_boxes (eb, itip);
    insert_label (priv->hbox.widget);

    combo = create_combo_box ();

    add_option (itip, combo, _("Send Latest Information"), 'S');
    priv->action = 'S';

    gtk_container_add (GTK_CONTAINER (priv->hbox.widget), combo);
    gtk_widget_show (combo);

    insert_ok (priv->hbox.widget, itip);

    return TRUE;
}

static gboolean
cancel_options_object (EItipControl *itip, GtkHTML *html, GtkHTMLEmbedded *eb)
{
    EItipControlPrivate *priv;
    GtkWidget *combo;

    priv = itip->priv;

    insert_boxes (eb, itip);
    insert_label (priv->hbox.widget);

    combo = create_combo_box ();

    add_option (itip, combo, _("Cancel"), 'C');
    priv->action = 'C';

    gtk_container_add (GTK_CONTAINER (priv->hbox.widget), combo);
    gtk_widget_show (combo);

    insert_ok (priv->hbox.widget, itip);

    return TRUE;
}

static gboolean
object_requested_cb (GtkHTML *html, GtkHTMLEmbedded *eb, gpointer data)
{
    EItipControl *itip = E_ITIP_CONTROL (data);

    if (!strcmp (eb->classid, "itip:publish_options"))
        return publish_options_object (itip, html, eb);
    else if (!strcmp (eb->classid, "itip:request_options"))
        return request_options_object (itip, html, eb);
    else if (!strcmp (eb->classid, "itip:freebusy_options"))
        return freebusy_options_object (itip, html, eb);
    else if (!strcmp (eb->classid, "itip:reply_options"))
        return reply_options_object (itip, html, eb);
    else if (!strcmp (eb->classid, "itip:refresh_options"))
        return refresh_options_object (itip, html, eb);
    else if (!strcmp (eb->classid, "itip:cancel_options"))
        return cancel_options_object (itip, html, eb);

    return FALSE;
}

static void
ok_clicked_cb (GtkWidget *widget, gpointer data)
{
    EItipControl *itip = E_ITIP_CONTROL (data);
    EItipControlPrivate *priv;
    gboolean status = FALSE;

    priv = itip->priv;

    if (!priv->my_address && priv->current_ecal != NULL)
        e_cal_get_cal_address (priv->current_ecal, &priv->my_address, NULL);

    switch (priv->action) {
    case 'U':
        update_item (itip);
        break;
    case 'A':
        status = change_status (priv->ical_comp, priv->my_address,
                    ICAL_PARTSTAT_ACCEPTED);
        if (status) {
            e_cal_component_rescan (priv->comp);
            update_item (itip);
        }
        break;
    case 'T':
        status = change_status (priv->ical_comp, priv->my_address,
                    ICAL_PARTSTAT_TENTATIVE);
        if (status) {
            e_cal_component_rescan (priv->comp);
            update_item (itip);
        }
        break;
    case 'D':
        status = change_status (priv->ical_comp, priv->my_address,
                    ICAL_PARTSTAT_DECLINED);
        if (status) {
            e_cal_component_rescan (priv->comp);
            update_item (itip);
        }
        break;
    case 'F':
        send_freebusy (itip);
        break;
    case 'R':
        update_attendee_status (itip);
        break;
    case 'S':
        send_item (itip);
        break;
    case 'C':
        update_item (itip);
        break;
    }

    if (e_cal_get_save_schedules (priv->current_ecal))
        return;

    if (priv->rsvp && status) {
        ECalComponent *comp = NULL;
        icalcomponent *ical_comp;
        icalproperty *prop;
        icalvalue *value;
        const gchar *attendee;
        GSList *l, *list = NULL;

        comp = e_cal_component_clone (priv->comp);
        if (comp == NULL)
            return;

        if (priv->my_address == NULL)
            find_my_address (itip, priv->ical_comp, NULL);
        g_return_if_fail (priv->my_address != NULL);

        ical_comp = e_cal_component_get_icalcomponent (comp);

        for (prop = icalcomponent_get_first_property (ical_comp, ICAL_ATTENDEE_PROPERTY);
             prop != NULL;
             prop = icalcomponent_get_next_property (ical_comp, ICAL_ATTENDEE_PROPERTY))
        {
            gchar *text;

            value = icalproperty_get_value (prop);
            if (!value)
                continue;

            attendee = icalvalue_get_string (value);

            text = g_strdup (itip_strip_mailto (attendee));
            text = g_strstrip (text);
            if (g_ascii_strcasecmp (priv->my_address, text))
                list = g_slist_prepend (list, prop);
            g_free (text);
        }

        for (l = list; l; l = l->next) {
            prop = l->data;
            icalcomponent_remove_property (ical_comp, prop);
            icalproperty_free (prop);
        }
        g_slist_free (list);

        e_cal_component_rescan (comp);
        itip_send_comp (E_CAL_COMPONENT_METHOD_REPLY, comp, priv->current_ecal, priv->top_level, NULL, NULL, TRUE);

        g_object_unref (comp);
    }
}