path: root/calendar/gui/e-meeting-edit.c

/* Evolution calendar - Meeting editor dialog
 *
 * Copyright (C) 2000 Helix Code, Inc.
 * Copyright (C) 2000 Ximian, Inc.
 *
 * Authors: Jesse Pavel <jpavel@ximian.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 */

#include <config.h>
#include <gtk/gtkclist.h>
#include <gtk/gtkentry.h>
#include <gtk/gtkmain.h>
#include <gtk/gtktogglebutton.h>
#include <gtk/gtkwindow.h>
#include <gdk_imlib.h>
#include <libgnomeui/gnome-dialog.h>
#include <libgnomeui/gnome-dialog-util.h>
#include <bonobo/bonobo-object.h>
#include <bonobo/bonobo-object-client.h>
#include <glade/glade.h>
#include <ical.h>
#include <widgets/meeting-time-sel/e-meeting-time-sel.h>
#include <Evolution-Composer.h>
#include <string.h>
#include "e-meeting-edit.h"
#include "itip-utils.h"

#define E_MEETING_GLADE_XML "e-meeting-dialog.glade"


typedef struct _EMeetingEditorPrivate EMeetingEditorPrivate;

struct _EMeetingEditorPrivate {
    /* These are the widgets to be used in the GUI. */
    GladeXML *xml;
    GtkWidget *meeting_window;
    GtkWidget *attendee_list;
    GtkWidget *address_entry;
    GtkWidget *edit_dialog;
    GtkWidget *organizer_entry;
    GtkWidget *role_entry;
    GtkWidget *rsvp_check;
    GtkWidget *publish_button, *request_button, *cancel_button,
          *schedule_button;
    
    gint changed_signal_id;

    /* Various pieces of information. */
    gint selected_row;
    CalComponent *comp;
    CalClient *client;
    icalcomponent *icalcomp, *vevent;

    gint numentries;  /* How many attendees are there? */
    gboolean dirty;  /* Has anything changed? */
}; 

#define NUM_COLUMNS 4  /* The number of columns in our attendee list. */

enum column_names {ADDRESS_COL, ROLE_COL, RSVP_COL, STATUS_COL};


static void
save_organizer (EMeetingEditorPrivate *priv)
{
    icalproperty *prop;
    icalvalue *value;
    gchar *text;

    /* Save the organizer into the iCAL object. */

    text = gtk_entry_get_text (GTK_ENTRY (priv->organizer_entry));
    if (strlen (text) > 0) {
        gchar buffer[200];
        g_snprintf (buffer, 190, "MAILTO:%s", text);
    
        prop = icalcomponent_get_first_property (priv->vevent, ICAL_ORGANIZER_PROPERTY);
        if (prop == NULL) {
            /* We need to add an ORGANIZER property. */
            prop = icalproperty_new (ICAL_ORGANIZER_PROPERTY);
            icalcomponent_add_property (priv->vevent, prop);
        }
        value = icalvalue_new_text (buffer);
        icalproperty_set_value (prop, value);
    }
}
    
    

static gboolean
window_delete_cb (GtkWidget *widget,
          GdkEvent *event,
          gpointer data)
{   
    EMeetingEditorPrivate *priv;

    priv = (EMeetingEditorPrivate *) ((EMeetingEditor *)data)->priv;

    save_organizer (priv);

    if (priv->dirty == TRUE) {
        /* FIXME: notify the event editor that our data has changed. 
            For now, I'll just display a dialog box. */
        {
            if (!cal_client_update_object (priv->client, priv->comp)) {
                GtkWidget *dialog;
            
                dialog = gnome_warning_dialog_parented ("I couldn't automatically save this meeting,\n"
                                    "so try to save this event manually.",
                                    GTK_WINDOW (priv->meeting_window));
                gnome_dialog_run (GNOME_DIALOG(dialog));
            }
        }
    }

    gtk_entry_set_text (GTK_ENTRY (priv->organizer_entry), "");

    return (FALSE);
}

static void 
window_destroy_cb (GtkWidget *widget,
           gpointer data)
{
    EMeetingEditorPrivate *priv;

    priv = (EMeetingEditorPrivate *) ((EMeetingEditor *)data)->priv;

    gtk_main_quit ();
    return;
}

/* put_property_in_list() synchronizes the display of row `rownum'
   in our attendee list to the values of `prop'. If rownum < 0,
   then put_property_in_list() will append a new row. 
   If the property doesn't contain certain parameters that we deem
   necessary, it will add them. */
static void
put_property_in_list (icalproperty *prop, gint rownum, gpointer data)
{
    gchar *row_text[NUM_COLUMNS];
    gchar *text, *new_text;
    icalparameter *param;
    icalvalue *value;
    icalparameter_role role_val;
    icalparameter_partstat part_val;
    gint cntr;

    EMeetingEditorPrivate *priv;

    priv = (EMeetingEditorPrivate *) ((EMeetingEditor *)data)->priv;
    
    value = icalproperty_get_value (prop);

    if (value != NULL) {
        text = strdup (icalvalue_as_ical_string (value));
    
        /* Here I strip off the "MAILTO:" if it is present. */
        new_text = strchr (text, ':');
        if (new_text != NULL)
            new_text++;
        else
            new_text = text;
    
        row_text[ADDRESS_COL] = g_strdup (new_text);
        g_free (text);
    }

    param = get_icalparam_by_type (prop, ICAL_ROLE_PARAMETER);
    if (param == NULL) {
        param = icalparameter_new_role (ICAL_ROLE_REQPARTICIPANT);
        icalproperty_add_parameter (prop, param);
    }
        
    role_val = icalparameter_get_role (param);
    if (role_val < ICAL_ROLE_CHAIR || role_val > ICAL_ROLE_NONPARTICIPANT)
        role_val = ICAL_ROLE_REQPARTICIPANT;
    row_text[ROLE_COL] = role_values[role_val - ICAL_ROLE_CHAIR];

    param = get_icalparam_by_type (prop, ICAL_RSVP_PARAMETER);
    if (param == NULL) {
        param = icalparameter_new_rsvp (ICAL_RSVP_TRUE);
        icalproperty_add_parameter (prop, param);
    }

    if (icalparameter_get_rsvp (param))
        row_text[RSVP_COL] = "Y";
    else
        row_text[RSVP_COL] = "N";

    param = get_icalparam_by_type (prop, ICAL_PARTSTAT_PARAMETER);
    if (param == NULL) {
        param = icalparameter_new_partstat (ICAL_PARTSTAT_NEEDSACTION);
        icalproperty_add_parameter (prop, param);
    }

    part_val = icalparameter_get_partstat (param);
    if (part_val < ICAL_PARTSTAT_NEEDSACTION || part_val > ICAL_PARTSTAT_INPROCESS)
        part_val = ICAL_PARTSTAT_NEEDSACTION;
    row_text[STATUS_COL] = partstat_values [part_val - ICAL_PARTSTAT_NEEDSACTION];

    if (rownum < 0) {
        gtk_clist_append (GTK_CLIST (priv->attendee_list), row_text);
        gtk_clist_set_row_data (GTK_CLIST (priv->attendee_list), priv->numentries, prop);
        priv->numentries++;
    }
    else {
        for (cntr = 0; cntr < NUM_COLUMNS; cntr++) {
            gtk_clist_set_text (GTK_CLIST (priv->attendee_list), 
                        rownum,
                        cntr,
                        row_text[cntr]);
        }
    }

    g_free (row_text[ADDRESS_COL]);
}

    

/********
 * edit_attendee() performs the GUI manipulation and interaction for
 * editing `prop' and returns TRUE if the user indicated that he wants
 * to save the new property information.
 * 
 * Note that it is necessary that the property have parameters of the types
 * RSVP, PARTSTAT, and ROLE already when passed into this function. 
 ********/
static gboolean
edit_attendee (icalproperty *prop, gpointer data)
{
    EMeetingEditorPrivate *priv;
    gint button_num;
    gchar *new_text, *text;
    icalparameter *param;
    icalvalue *value;
    gchar buffer[200];
    gint cntr;
    icalparameter_role role_val;
    gboolean retval;

    priv = (EMeetingEditorPrivate *) ((EMeetingEditor *)data)->priv;

    g_return_val_if_fail (prop != NULL, FALSE);

    if (priv->edit_dialog == NULL || priv->address_entry == NULL) {
        priv->edit_dialog = glade_xml_get_widget (priv->xml, "edit_dialog");
        priv->address_entry = glade_xml_get_widget (priv->xml, "address_entry");

        gnome_dialog_set_close (GNOME_DIALOG (priv->edit_dialog), TRUE);
        gnome_dialog_editable_enters (GNOME_DIALOG (priv->edit_dialog), 
                          GTK_EDITABLE (priv->address_entry));
        gnome_dialog_close_hides (GNOME_DIALOG (priv->edit_dialog), TRUE);
        gnome_dialog_set_default (GNOME_DIALOG (priv->edit_dialog), 0);
    }

    g_return_val_if_fail (priv->edit_dialog != NULL, FALSE);
    g_return_val_if_fail (priv->address_entry != NULL, FALSE);

    gtk_widget_realize (priv->edit_dialog);
    
    value = icalproperty_get_value (prop);

    if (value != NULL) {
        text = strdup (icalvalue_as_ical_string (value));
    
        /* Here I strip off the "MAILTO:" if it is present. */
        new_text = strchr (text, ':');
        if (new_text != NULL)
            new_text++;
        else
            new_text = text;
    
        gtk_entry_set_text (GTK_ENTRY (priv->address_entry), new_text);
        g_free (text);
    }
    else {
        gtk_entry_set_text (GTK_ENTRY (priv->address_entry), "");
    }
                

    param = get_icalparam_by_type (prop, ICAL_ROLE_PARAMETER);
    role_val = icalparameter_get_role (param);
    if (role_val < ICAL_ROLE_CHAIR || role_val > ICAL_ROLE_NONPARTICIPANT)
        role_val = ICAL_ROLE_REQPARTICIPANT;
    
    text = role_values [role_val - ICAL_ROLE_CHAIR];
    gtk_entry_set_text (GTK_ENTRY (priv->role_entry), text);

    param = get_icalparam_by_type (prop, ICAL_RSVP_PARAMETER);
    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->rsvp_check),
                    icalparameter_get_rsvp (param));

    gtk_widget_show (priv->edit_dialog);

    button_num = gnome_dialog_run (GNOME_DIALOG (priv->edit_dialog));

    if (button_num == 0) {
        /* The user pressed the OK button. */
        new_text = gtk_entry_get_text (GTK_ENTRY (priv->address_entry));

        g_snprintf (buffer, 190, "MAILTO:%s", new_text);
        value = icalvalue_new_text (buffer);
        icalproperty_set_value (prop, value);

        /* Take care of the ROLE. */
        icalproperty_remove_parameter (prop, ICAL_ROLE_PARAMETER);

        param = NULL;
        text = gtk_entry_get_text (GTK_ENTRY(priv->role_entry));

        for (cntr = 0; cntr < 4; cntr++) {
            if (strncmp (text, role_values[cntr], 3) == 0) {
                param = icalparameter_new_role (ICAL_ROLE_CHAIR + cntr);
                break;
            }
        }

        if (param == NULL) {
            g_print ("e-meeting-edit.c: edit_attendee() the ROLE param was null.\n");
            /* Use this as a default case, if none of the others match. */
            param = icalparameter_new_role (ICAL_ROLE_REQPARTICIPANT);
        }

        icalproperty_add_parameter (prop, param);

        /* Now the RSVP. */
        icalproperty_remove_parameter (prop, ICAL_RSVP_PARAMETER);

        if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->rsvp_check)))
            param = icalparameter_new_rsvp (ICAL_RSVP_TRUE);
        else
            param = icalparameter_new_rsvp (ICAL_RSVP_FALSE);
        icalproperty_add_parameter (prop, param);

        retval = TRUE;
    }
    else  /* The user didn't say OK. */
        retval = FALSE;
    
    return retval;
}

static void
schedule_button_clicked_cb (GtkWidget *widget, gpointer data)
{
    EMeetingEditorPrivate *priv;

    EMeetingTimeSelector *mts;
    EMeetingTimeSelectorAttendeeType type;
    GtkWidget *dialog;
    gchar *attendee;
    gint cntr, row;
    icalproperty *prop;
    icalparameter *param;
    gint button_num;

    priv = (EMeetingEditorPrivate *) ((EMeetingEditor *)data)->priv;

    
    gtk_widget_push_visual (gdk_imlib_get_visual ());
    gtk_widget_push_colormap (gdk_imlib_get_colormap ());
    
    dialog = gnome_dialog_new ("Schedule Meeting", "Set Time", "Cancel", NULL);

    gtk_window_set_default_size (GTK_WINDOW (dialog), 600, 400);
    gtk_window_set_policy (GTK_WINDOW (dialog), FALSE, TRUE, FALSE);

    mts = (EMeetingTimeSelector *)e_meeting_time_selector_new ();
    gtk_container_add (GTK_CONTAINER (GNOME_DIALOG (dialog)->vbox), GTK_WIDGET (mts));
    gtk_window_add_accel_group (GTK_WINDOW (dialog),
                    E_MEETING_TIME_SELECTOR (mts)->accel_group);
    gtk_widget_show (GTK_WIDGET (mts));
    
    gtk_widget_pop_visual ();
    gtk_widget_pop_colormap ();
    

    /* Let's stick all the attendees that we have in our clist, into the
       meeting time widget. */
    for (cntr = 0; cntr < priv->numentries; cntr++ ) {
        gtk_clist_get_text (GTK_CLIST (priv->attendee_list), cntr, 
                    ADDRESS_COL, &attendee);
        row = e_meeting_time_selector_attendee_add (mts, attendee, NULL);

        prop = (icalproperty *)gtk_clist_get_row_data (GTK_CLIST (priv->attendee_list), cntr);
        param = get_icalparam_by_type (prop, ICAL_ROLE_PARAMETER);

        switch (icalparameter_get_role (param)) {
            case ICAL_ROLE_CHAIR:
            case ICAL_ROLE_REQPARTICIPANT:
              type = E_MEETING_TIME_SELECTOR_REQUIRED_PERSON;
              break;
            default:
              type = E_MEETING_TIME_SELECTOR_OPTIONAL_PERSON;
        }

        e_meeting_time_selector_attendee_set_type (mts, row, type);
    }

    /* I don't want the meeting widget to be destroyed before I can
       extract information from it; so now the dialog window will just
       be hidden when the user clicks a button or closes it. */
    gnome_dialog_close_hides (GNOME_DIALOG (dialog), TRUE);

    gnome_dialog_set_close (GNOME_DIALOG (dialog), TRUE);

    button_num = gnome_dialog_run (GNOME_DIALOG (dialog));

    if (button_num == 0) {
        /* The user clicked "Set Time". */
                gint start_year, start_month, start_day, start_hour, start_minute, 
             end_year, end_month, end_day, end_hour, end_minute;
        CalComponentDateTime cal_dtstart, cal_dtend;


        e_meeting_time_selector_get_meeting_time (mts,
                                   &start_year,
                                   &start_month,
                                   &start_day,
                                   &start_hour,
                                   &start_minute,
                                   &end_year,
                                   &end_month,
                                   &end_day,
                                   &end_hour,
                                   &end_minute);
        
        cal_component_get_dtstart (priv->comp, &cal_dtstart);
        cal_component_get_dtend (priv->comp, &cal_dtend);

        cal_dtstart.value->second = 0;
        cal_dtstart.value->minute = start_minute;
        cal_dtstart.value->hour = start_hour;
        cal_dtstart.value->day = start_day;
        cal_dtstart.value->month = start_month;
        cal_dtstart.value->year = start_year;

        cal_dtend.value->second = 0;
        cal_dtend.value->minute = end_minute;
        cal_dtend.value->hour = end_hour;
        cal_dtend.value->day = end_day;
        cal_dtend.value->month = end_month;
        cal_dtend.value->year = end_year;

        cal_component_set_dtstart (priv->comp, &cal_dtstart);
        cal_component_set_dtend (priv->comp, &cal_dtend);

        cal_component_free_datetime (&cal_dtstart);
        cal_component_free_datetime (&cal_dtend);

        priv->dirty = TRUE;
    }

    gtk_widget_destroy (GTK_WIDGET (dialog));

    return;
}

#define GNOME_EVOLUTION_COMPOSER_OAFIID "OAFIID:GNOME_Evolution_Mail_Composer"

static gchar *itip_methods[] = {
    "REQUEST",
    "PUBLISH",
    "CANCEL"
};

enum itip_method_enum {
    METHOD_REQUEST,
    METHOD_PUBLISH,
    METHOD_CANCEL
};

typedef enum itip_method_enum itip_method_enum;

static void
send_calendar_info (itip_method_enum method, EMeetingEditorPrivate *priv)
{
    BonoboObjectClient *bonobo_server;
    GNOME_Evolution_Composer composer_server;
    CORBA_Environment ev;
    GNOME_Evolution_Composer_RecipientList *to_list, *cc_list, *bcc_list;
    GNOME_Evolution_Composer_Recipient *recipient;
    gchar *cell_text;
    CORBA_char *subject;
    gint cntr;
    gint len;
    CalComponentText caltext;
    CORBA_char *content_type, *filename, *description, *attach_data;
    CORBA_boolean show_inline;
    CORBA_char tempstr[200];

    
    CORBA_exception_init (&ev);

    /* First, I obtain an object reference that represents the Composer. */
    bonobo_server = bonobo_object_activate (GNOME_EVOLUTION_COMPOSER_OAFIID, 0);

    g_return_if_fail (bonobo_server != NULL);

    composer_server = bonobo_object_corba_objref (BONOBO_OBJECT (bonobo_server));

    /* All right, now I have to convert my list of recipients into one of those
       CORBA sequences. */
    to_list = GNOME_Evolution_Composer_RecipientList__alloc ();
    to_list->_maximum = priv->numentries;
    to_list->_length = priv->numentries; 
    to_list->_buffer = CORBA_sequence_GNOME_Evolution_Composer_Recipient_allocbuf (priv->numentries);

    for (cntr = 0; cntr < priv->numentries; cntr++) {
        gtk_clist_get_text (GTK_CLIST (priv->attendee_list),
                    cntr, ADDRESS_COL,
                    &cell_text);
        len = strlen (cell_text);

        recipient = &(to_list->_buffer[cntr]);
        recipient->name = CORBA_string_alloc (0);  /* FIXME: we may want an actual name here. */
        recipient->name[0] = '\0';
        recipient->address = CORBA_string_alloc (len);
        strcpy (recipient->address, cell_text);
    }

    cc_list = GNOME_Evolution_Composer_RecipientList__alloc ();
    cc_list->_maximum = cc_list->_length = 0;
    bcc_list = GNOME_Evolution_Composer_RecipientList__alloc ();
    bcc_list->_maximum = bcc_list->_length = 0;

    cal_component_get_summary (priv->comp, &caltext);
    subject = CORBA_string_alloc (strlen (caltext.value));
    strcpy (subject, caltext.value);

    GNOME_Evolution_Composer_setHeaders (composer_server, to_list, cc_list, bcc_list, subject, &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        g_printerr ("gui/e-meeting-edit.c: I couldn't set the composer headers via CORBA! Aagh.\n");
        CORBA_exception_free (&ev);
        return;
    }

    sprintf (tempstr, "text/calendar;METHOD=%s", itip_methods[method]);
    content_type = CORBA_string_alloc (strlen (tempstr));
    strcpy (content_type, tempstr);
    filename = CORBA_string_alloc (0);
    filename[0] = '\0';
    sprintf (tempstr, "Calendar attachment");
    description = CORBA_string_alloc (strlen (tempstr));
    strcpy (description, tempstr);
    show_inline = FALSE;

    /* I need to create an encapsulating iCalendar component, and stuff our vEvent
       into it. */
    {
        icalcomponent *comp;
        icalproperty *prop;
        icalvalue *value;
        gchar *ical_string;

        save_organizer (priv);
        
        comp = icalcomponent_new (ICAL_VCALENDAR_COMPONENT);
        
        prop = icalproperty_new (ICAL_PRODID_PROPERTY);
        value = icalvalue_new_text ("-//HelixCode/Evolution//EN");
        icalproperty_set_value (prop, value);
        icalcomponent_add_property (comp, prop);

        prop = icalproperty_new (ICAL_VERSION_PROPERTY);
        value = icalvalue_new_text ("2.0");
        icalproperty_set_value (prop, value);
        icalcomponent_add_property (comp, prop);

        prop = icalproperty_new (ICAL_METHOD_PROPERTY);
        value = icalvalue_new_text (itip_methods[method]);
        icalproperty_set_value (prop, value);
        icalcomponent_add_property (comp, prop);

        icalcomponent_add_component (comp, priv->vevent);

        ical_string = icalcomponent_as_ical_string (comp);
        attach_data = CORBA_string_alloc (strlen (ical_string));
        strcpy (attach_data, ical_string);

        icalcomponent_remove_component (comp, priv->vevent);
        icalcomponent_free (comp);
    }

    GNOME_Evolution_Composer_attachData (composer_server, 
                    content_type, filename, description,
                    show_inline, attach_data,
                    &ev);
    
    if (ev._major != CORBA_NO_EXCEPTION) {
        g_printerr ("gui/e-meeting-edit.c: I couldn't attach data to the composer via CORBA! Aagh.\n");
        CORBA_exception_free (&ev);
        return;
    }
    
    GNOME_Evolution_Composer_show (composer_server, &ev);

    if (ev._major != CORBA_NO_EXCEPTION) {
        g_printerr ("gui/e-meeting-edit.c: I couldn't show the composer via CORBA! Aagh.\n");
        CORBA_exception_free (&ev);
        return;
    }
    
    CORBA_exception_free (&ev);

    /* Let's free shit up. */

    /* Beware--depending on whether CORBA_free is recursive, which I
       think is is, we might have memory leaks, in which case the code
       below is necessary. */
#if 0
    for (cntr = 0; cntr < priv->numentries; cntr++) {
        recipient = &(to_list->_buffer[cntr]);
        CORBA_free (recipient->name);
        CORBA_free (recipient->address);
        recipient->name = recipient->address = NULL;
    }
#endif

    if (CORBA_sequence_get_release (to_list) != FALSE)
        CORBA_free (to_list->_buffer);

    CORBA_free (to_list);
    CORBA_free (cc_list);
    CORBA_free (bcc_list);

    CORBA_free (subject);
    CORBA_free (content_type);
    CORBA_free (filename);
    CORBA_free (description);
    CORBA_free (attach_data);

    /* bonobo_object_unref (BONOBO_OBJECT (bonobo_server));   */
}

/********
 * This routine is called when the publish button is clicked. Duh. 
 * Actually, I'm just testing my commenting macros.
 ********/
static void
publish_button_clicked_cb (GtkWidget *widget, gpointer data)
{
    EMeetingEditorPrivate *priv;


    priv = (EMeetingEditorPrivate *) ((EMeetingEditor *)data)->priv;

    send_calendar_info (METHOD_PUBLISH, priv);

}

static void
request_button_clicked_cb (GtkWidget *widget, gpointer data)
{
    EMeetingEditorPrivate *priv;

    priv = (EMeetingEditorPrivate *) ((EMeetingEditor *)data)->priv;

    send_calendar_info (METHOD_REQUEST, priv);

}

static void
cancel_button_clicked_cb (GtkWidget *widget, gpointer data)
{
    EMeetingEditorPrivate *priv;

    priv = (EMeetingEditorPrivate *) ((EMeetingEditor *)data)->priv;

    send_calendar_info (METHOD_CANCEL, priv);
}



static void 
add_button_clicked_cb (GtkWidget *widget, gpointer data)
{
    EMeetingEditorPrivate *priv;
    icalproperty *prop;
    icalparameter *param;

    priv = (EMeetingEditorPrivate *) ((EMeetingEditor *)data)->priv;

    prop = icalproperty_new (ICAL_ATTENDEE_PROPERTY);
    param = icalparameter_new_role (ICAL_ROLE_REQPARTICIPANT); 
    icalproperty_add_parameter (prop, param);
    param = icalparameter_new_rsvp (ICAL_RSVP_TRUE); 
    icalproperty_add_parameter (prop, param);
    param = icalparameter_new_partstat (ICAL_PARTSTAT_NEEDSACTION);
    icalproperty_add_parameter (prop, param);

    if (edit_attendee (prop, data) == TRUE) {
        /* Let's add this property to our component and to the CList. */
        icalcomponent_add_property (priv->vevent, prop);

        /* The -1 indicates that we should add a new row. */
        put_property_in_list (prop, -1, data);

        priv->dirty = TRUE;
    }
    else {
        icalproperty_free (prop);
    }
}   

static void 
delete_button_clicked_cb (GtkWidget *widget, gpointer data)
{
    EMeetingEditorPrivate *priv;

    priv = (EMeetingEditorPrivate *) ((EMeetingEditor *)data)->priv;

    if (priv->selected_row < 0) {
        GtkWidget *dialog;

        dialog = gnome_warning_dialog_parented ("You must select an entry to delete.",
                            GTK_WINDOW (priv->meeting_window));
        gnome_dialog_run (GNOME_DIALOG(dialog));
    }
    else {
        /* Delete the associated property from the iCAL object. */
        icalproperty *prop;

        prop = (icalproperty *)gtk_clist_get_row_data (GTK_CLIST (priv->attendee_list),
                                   priv->selected_row);
        icalcomponent_remove_property (priv->vevent, prop);
        icalproperty_free (prop);

        gtk_clist_remove (GTK_CLIST (priv->attendee_list), priv->selected_row);
        priv->selected_row = -1;
        priv->numentries--;
        priv->dirty = TRUE;
    }
}

static void 
edit_button_clicked_cb (GtkWidget *widget, gpointer data)
{
    EMeetingEditorPrivate *priv;

    priv = (EMeetingEditorPrivate *) ((EMeetingEditor *)data)->priv;

    
    if (priv->selected_row < 0) {
        GtkWidget *dialog;

        dialog = gnome_warning_dialog_parented ("You must select an entry to edit.",
                            GTK_WINDOW (priv->meeting_window));
        gnome_dialog_run (GNOME_DIALOG(dialog));
        return;
    }
    else {
        icalproperty *prop, *new_prop;
        icalparameter *param;
        icalvalue *value;
        
        prop = (icalproperty *)gtk_clist_get_row_data (GTK_CLIST (priv->attendee_list),
                                   priv->selected_row);

        g_assert (prop != NULL);

        new_prop = icalproperty_new_clone (prop);

        if (edit_attendee (new_prop, data)) {
            /* The user hit Okay. */
            /*We need to synchronize the old property with the newly edited one.*/
            value = icalvalue_new_clone (icalproperty_get_value (new_prop));
            icalproperty_set_value (prop, value);

            icalproperty_remove_parameter (prop, ICAL_ROLE_PARAMETER);
            icalproperty_remove_parameter (prop, ICAL_RSVP_PARAMETER);
            icalproperty_remove_parameter (prop, ICAL_PARTSTAT_PARAMETER);

            param = icalparameter_new_clone (get_icalparam_by_type (new_prop, ICAL_ROLE_PARAMETER));
            g_assert (param != NULL);
            icalproperty_add_parameter (prop, param);
            param = icalparameter_new_clone (get_icalparam_by_type (new_prop, ICAL_RSVP_PARAMETER));
            g_assert (param != NULL);
            icalproperty_add_parameter (prop, param);
            param = icalparameter_new_clone (get_icalparam_by_type (new_prop, ICAL_PARTSTAT_PARAMETER));
            g_assert (param != NULL);
            icalproperty_add_parameter (prop, param);
            
            put_property_in_list (prop, priv->selected_row, data);
            priv->dirty = TRUE;

        }
        icalproperty_free (new_prop);
    }
}



static void 
list_row_select_cb  (GtkWidget *widget,
                     gint row,
                     gint column,
                     GdkEventButton *event,
                     gpointer data)
{
    EMeetingEditorPrivate *priv;

    priv = (EMeetingEditorPrivate *) ((EMeetingEditor *)data)->priv;
    
    priv->selected_row = row;
}

static void
organizer_changed_cb (GtkWidget *widget, gpointer data)
{
    EMeetingEditorPrivate *priv;

    priv = (EMeetingEditorPrivate *) ((EMeetingEditor *)data)->priv;

    gtk_signal_disconnect (GTK_OBJECT (priv->organizer_entry), priv->changed_signal_id);

    priv->dirty = TRUE;
}


/* ------------------------------------------------------------ */
/* --------------------- Exported Functions ------------------- */
/* ------------------------------------------------------------ */

EMeetingEditor * 
e_meeting_editor_new (CalComponent *comp, CalClient *client)
{
    EMeetingEditor *object;
    EMeetingEditorPrivate *priv;

    object = (EMeetingEditor *)g_new(EMeetingEditor, 1);
    
    priv = (EMeetingEditorPrivate *) g_new0(EMeetingEditorPrivate, 1);
    priv->selected_row = -1;
    priv->comp = comp;
    priv->client = client;
    priv->icalcomp = cal_component_get_icalcomponent (comp);
    
    object->priv = priv;

    return object;  
}

void
e_meeting_editor_free (EMeetingEditor *editor)
{
    if (editor == NULL)
        return;
        
    if (editor->priv != NULL)
        g_free (editor->priv);
    
    g_free (editor);
}
    


void 
e_meeting_edit (EMeetingEditor *editor)
{
    EMeetingEditorPrivate *priv;
    GtkWidget *add_button, *delete_button, *edit_button;
    icalproperty *prop;
    icalvalue *value;
    gchar *text;


    g_return_if_fail (editor != NULL);

    priv = (EMeetingEditorPrivate *)editor->priv;

    g_return_if_fail (priv != NULL);


    priv->xml = glade_xml_new (EVOLUTION_GLADEDIR "/" E_MEETING_GLADE_XML, NULL);
    
    priv->meeting_window =  glade_xml_get_widget (priv->xml, "meeting_window");
    priv->attendee_list = glade_xml_get_widget (priv->xml, "attendee_list");
    priv->role_entry = glade_xml_get_widget (priv->xml, "role_entry");
    priv->rsvp_check = glade_xml_get_widget (priv->xml, "rsvp_check");
    priv->schedule_button = glade_xml_get_widget (priv->xml, "schedule_button");
    priv->publish_button = glade_xml_get_widget (priv->xml, "publish_button");
    priv->request_button = glade_xml_get_widget (priv->xml, "request_button");
    priv->cancel_button = glade_xml_get_widget (priv->xml, "cancel_button");

    gtk_clist_set_column_justification (GTK_CLIST (priv->attendee_list), ROLE_COL, GTK_JUSTIFY_CENTER);
    gtk_clist_set_column_justification (GTK_CLIST (priv->attendee_list), RSVP_COL, GTK_JUSTIFY_CENTER);
    gtk_clist_set_column_justification (GTK_CLIST (priv->attendee_list), STATUS_COL, GTK_JUSTIFY_CENTER);

        gtk_signal_connect (GTK_OBJECT (priv->meeting_window), "delete_event",
                            GTK_SIGNAL_FUNC (window_delete_cb), editor);

    gtk_signal_connect_after (GTK_OBJECT (priv->meeting_window), "delete_event",
                  GTK_SIGNAL_FUNC (window_destroy_cb), editor);

        gtk_signal_connect (GTK_OBJECT (priv->meeting_window), "destroy_event",
                            GTK_SIGNAL_FUNC (window_destroy_cb), editor);

    gtk_signal_connect (GTK_OBJECT (priv->attendee_list), "select_row",
                GTK_SIGNAL_FUNC (list_row_select_cb), editor);
    
    gtk_signal_connect (GTK_OBJECT (priv->schedule_button), "clicked",
                GTK_SIGNAL_FUNC (schedule_button_clicked_cb), editor);
    
    gtk_signal_connect (GTK_OBJECT (priv->publish_button), "clicked",
                GTK_SIGNAL_FUNC (publish_button_clicked_cb), editor);

    gtk_signal_connect (GTK_OBJECT (priv->request_button), "clicked",
                GTK_SIGNAL_FUNC (request_button_clicked_cb), editor);

    gtk_signal_connect (GTK_OBJECT (priv->cancel_button), "clicked",
                GTK_SIGNAL_FUNC (cancel_button_clicked_cb), editor);

    add_button = glade_xml_get_widget (priv->xml, "add_button");
    delete_button = glade_xml_get_widget (priv->xml, "delete_button");
    edit_button = glade_xml_get_widget (priv->xml, "edit_button");

    gtk_signal_connect (GTK_OBJECT (add_button), "clicked",
                GTK_SIGNAL_FUNC (add_button_clicked_cb), editor);
    
    gtk_signal_connect (GTK_OBJECT (delete_button), "clicked",
                GTK_SIGNAL_FUNC (delete_button_clicked_cb), editor);

    gtk_signal_connect (GTK_OBJECT (edit_button), "clicked",
                GTK_SIGNAL_FUNC (edit_button_clicked_cb), editor);

    priv->organizer_entry = glade_xml_get_widget (priv->xml, "organizer_entry");

    if (icalcomponent_isa (priv->icalcomp) != ICAL_VEVENT_COMPONENT) {
        icalcompiter iter;

        iter = icalcomponent_begin_component (priv->icalcomp, ICAL_VEVENT_COMPONENT);
        priv->vevent = icalcompiter_deref (&iter);
    } else
        priv->vevent = priv->icalcomp;

    g_assert (priv->vevent != NULL);

    /* Let's extract the organizer, if there is one. */
        prop = icalcomponent_get_first_property (priv->vevent, ICAL_ORGANIZER_PROPERTY);

    if (prop != NULL) {
        gchar *buffer;

            value = icalproperty_get_value (prop);
        buffer = g_strdup (icalvalue_as_ical_string (value));
            if (buffer != NULL) {
            /* Strip off the MAILTO:, if it is present. */
                text = strchr (buffer, ':');
            if (text == NULL)
                text = buffer;
            else
                text++;
                
            gtk_entry_set_text (GTK_ENTRY (priv->organizer_entry), text);
            g_free (buffer);
        }
        
    }

    priv->changed_signal_id = gtk_signal_connect (GTK_OBJECT (priv->organizer_entry), "changed",
                              GTK_SIGNAL_FUNC (organizer_changed_cb), editor);


    /* Let's go through the iCAL object, and create a list entry
       for each ATTENDEE property. */
        for (prop = icalcomponent_get_first_property (priv->vevent, ICAL_ATTENDEE_PROPERTY);
             prop != NULL;
             prop = icalcomponent_get_next_property (priv->vevent, ICAL_ATTENDEE_PROPERTY))
    {
        put_property_in_list (prop, -1, editor);
    }
    

    gtk_widget_show (priv->meeting_window);

    gtk_main ();

    if (priv->meeting_window != NULL)
        gtk_widget_destroy (priv->meeting_window);

    if (priv->edit_dialog != NULL)
        gtk_widget_destroy (priv->edit_dialog);

    gtk_object_unref (GTK_OBJECT (priv->xml));
}