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/* 
 * e-meeting-list-view.c
 *
 * Authors: Mike Kestner  <mkestner@ximian.com>
 *      JP Rosevear  <jpr@ximian.com>
 *
 * Copyright (C) 2003  Ximian, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * 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.
 */

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

#include <string.h>
#include <glib.h>
#include <gtk/gtktreemodel.h>
#include <bonobo/bonobo-control.h>
#include <bonobo/bonobo-widget.h>
#include <bonobo/bonobo-exception.h>
#include <libgnome/gnome-i18n.h>
#include <libgnome/gnome-util.h>
#include <libgnomevfs/gnome-vfs.h>
#include <libebook/e-book.h>
#include <libebook/e-vcard.h>
#include <libecal/e-cal-component.h>
#include <libecal/e-cal-util.h>
#include <libecal/e-cal-time-util.h>
#include "Evolution-Addressbook-SelectNames.h"
#include "calendar-config.h"
#include "e-meeting-list-view.h"
#include <misc/e-cell-renderer-combo.h>
#include <addressbook/util/eab-destination.h>
#include "e-select-names-renderer.h"

#define SELECT_NAMES_OAFID "OAFIID:GNOME_Evolution_Addressbook_SelectNames_2"

struct _EMeetingListViewPrivate 
{
    EMeetingStore *store;

    EBook *ebook;

        GNOME_Evolution_Addressbook_SelectNames corba_select_names;
};

#define BUF_SIZE 1024

static char *sections[] = {N_("Chair Persons"), 
               N_("Required Participants"), 
               N_("Optional Participants"), 
               N_("Resources"),
               NULL};
static icalparameter_role roles[] = {ICAL_ROLE_CHAIR,
                     ICAL_ROLE_REQPARTICIPANT,
                     ICAL_ROLE_OPTPARTICIPANT,
                     ICAL_ROLE_NONPARTICIPANT,
                     ICAL_ROLE_NONE};

static GtkTreeViewClass *parent_class = NULL;

static void
start_addressbook_server (EMeetingListView *view)
{
    GError *error = NULL;

    view->priv->ebook = e_book_new ();
    if (!e_book_load_local_addressbook (view->priv->ebook, &error)) {
        g_warning ("start_addressbook_server(): %s", error->message);
        g_error_free (error);

        return;
    }
}

static void
emlv_finalize (GObject *obj)
{
    EMeetingListView *view = E_MEETING_LIST_VIEW (obj);
    EMeetingListViewPrivate *priv = view->priv;
    
    if (priv->ebook != NULL)
        g_object_unref (priv->ebook);

    if (priv->corba_select_names != CORBA_OBJECT_NIL) {
        CORBA_Environment ev;
        CORBA_exception_init (&ev);
        bonobo_object_release_unref (priv->corba_select_names, &ev);
        CORBA_exception_free (&ev);
    }

    g_free (priv);

    if (G_OBJECT_CLASS (parent_class)->finalize)
        (* G_OBJECT_CLASS (parent_class)->finalize) (obj);
}

static void
emlv_class_init (GObjectClass *klass)
{
    parent_class = g_type_class_peek_parent (klass);

    klass->finalize = emlv_finalize;
}


static void
emlv_init (EMeetingListView *view)
{
    EMeetingListViewPrivate *priv;

    priv = g_new0 (EMeetingListViewPrivate, 1);

    view->priv = priv;

    priv->corba_select_names = CORBA_OBJECT_NIL;
    
    start_addressbook_server (view);
}

E_MAKE_TYPE (e_meeting_list_view, "EMeetingListView", EMeetingListView, emlv_class_init, emlv_init, GTK_TYPE_TREE_VIEW);
static GList *
get_type_strings ()
{
    GList *strings = NULL;

    strings = g_list_append (strings, (char*) _("Individual"));
        strings = g_list_append (strings, (char*) _("Group"));
        strings = g_list_append (strings, (char*) _("Resource"));
        strings = g_list_append (strings, (char*) _("Room"));
        strings = g_list_append (strings, (char*) _("Unknown"));

    return strings;
}

static GList *
get_role_strings ()
{
    GList *strings = NULL;

    strings = g_list_append (strings, (char*) _("Chair"));
    strings = g_list_append (strings, (char*) _("Required Participant"));
    strings = g_list_append (strings, (char*) _("Optional Participant"));
    strings = g_list_append (strings, (char*) _("Non-Participant"));
    strings = g_list_append (strings, (char*) _("Unknown"));

    return strings;
}

static GList *
get_rsvp_strings ()
{
    GList *strings = NULL;

    strings = g_list_append (strings, (char*) _("Yes"));
    strings = g_list_append (strings, (char*) _("No"));

    return strings;
}

static GList *
get_status_strings ()
{
    GList *strings = NULL;

    strings = g_list_append (strings, (char*) _("Needs Action"));
    strings = g_list_append (strings, (char*) _("Accepted"));
    strings = g_list_append (strings, (char*) _("Declined"));
    strings = g_list_append (strings, (char*) _("Tentative"));
    strings = g_list_append (strings, (char*) _("Delegated"));

    return strings;
}

static void
value_edited (GtkTreeView *view, gint col, const gchar *path, const gchar *text)
{
    EMeetingStore *model = E_MEETING_STORE (gtk_tree_view_get_model (view));
    GtkTreePath *treepath = gtk_tree_path_new_from_string (path);
    int row = gtk_tree_path_get_indices (treepath)[0];
       
    e_meeting_store_set_value (model, row, col, text);
    gtk_tree_path_free (treepath);
}

static void
attendee_edited_cb (GtkCellRenderer *renderer, const gchar *path, const gchar *address, const gchar *name, GtkTreeView *view)
{
    value_edited (view, E_MEETING_STORE_ADDRESS_COL, path, address);
    value_edited (view, E_MEETING_STORE_CN_COL, path, name);
}

static void
type_edited_cb (GtkCellRenderer *renderer, const gchar *path, const gchar *text, GtkTreeView *view)
{
    value_edited (view, E_MEETING_STORE_TYPE_COL, path, text);
}

static void
role_edited_cb (GtkCellRenderer *renderer, const gchar *path, const gchar *text, GtkTreeView *view)
{
    value_edited (view, E_MEETING_STORE_ROLE_COL, path, text);
}

static void
rsvp_edited_cb (GtkCellRenderer *renderer, const gchar *path, const gchar *text, GtkTreeView *view)
{
    value_edited (view, E_MEETING_STORE_RSVP_COL, path, text);
}

static void
status_edited_cb (GtkCellRenderer *renderer, const gchar *path, const gchar *text, GtkTreeView *view)
{
    value_edited (view, E_MEETING_STORE_STATUS_COL, path, text);
}

static void
build_table (GtkTreeView *view)
{
    GtkCellRenderer *renderer;

    gtk_tree_view_set_headers_visible (view, TRUE);
    gtk_tree_view_set_rules_hint (view, TRUE);

    renderer = e_select_names_renderer_new ();
    g_object_set (G_OBJECT (renderer), "editable", TRUE, NULL);
    gtk_tree_view_insert_column_with_attributes (view, -1, _("Attendee"), renderer,
                             "text", E_MEETING_STORE_ATTENDEE_COL,
                             "address", E_MEETING_STORE_ADDRESS_COL,
                             "underline", E_MEETING_STORE_ATTENDEE_UNDERLINE_COL,
                             NULL);
    g_signal_connect (renderer, "cell_edited", G_CALLBACK (attendee_edited_cb), view);
    
    renderer = e_cell_renderer_combo_new ();
    g_object_set (G_OBJECT (renderer), "list", get_type_strings (), "editable", TRUE, NULL);
    gtk_tree_view_insert_column_with_attributes (view, -1, _("Type"), renderer,
                             "text", E_MEETING_STORE_TYPE_COL,
                             NULL);
    g_signal_connect (renderer, "edited", G_CALLBACK (type_edited_cb), view);
    
    renderer = e_cell_renderer_combo_new ();
    g_object_set (G_OBJECT (renderer), "list", get_role_strings (), "editable", TRUE, NULL);
    gtk_tree_view_insert_column_with_attributes (view, -1, _("Role"), renderer,
                             "text", E_MEETING_STORE_ROLE_COL,
                             NULL);
    g_signal_connect (renderer, "edited", G_CALLBACK (role_edited_cb), view);

    renderer = e_cell_renderer_combo_new ();
    g_object_set (G_OBJECT (renderer), "list", get_rsvp_strings (), "editable", TRUE, NULL);
    gtk_tree_view_insert_column_with_attributes (view, -1, _("RSVP"), renderer,
                             "text", E_MEETING_STORE_RSVP_COL,
                             NULL);
    g_signal_connect (renderer, "edited", G_CALLBACK (rsvp_edited_cb), view);

    renderer = e_cell_renderer_combo_new ();
    g_object_set (G_OBJECT (renderer), "list", get_status_strings (), "editable", TRUE, NULL);
    gtk_tree_view_insert_column_with_attributes (view, -1, _("Status"), renderer,
                             "text", E_MEETING_STORE_STATUS_COL,
                             NULL);
    g_signal_connect (renderer, "edited", G_CALLBACK (status_edited_cb), view);
}

EMeetingListView *
e_meeting_list_view_new (EMeetingStore *store)
{
    EMeetingListView *view = g_object_new (E_TYPE_MEETING_LIST_VIEW, NULL);

    if (view) {
        view->priv->store = store;
        gtk_tree_view_set_model (GTK_TREE_VIEW (view), GTK_TREE_MODEL (store));
        build_table (GTK_TREE_VIEW (view));
    }

    return view;
}

void
e_meeting_list_view_column_set_visible (EMeetingListView *view, const gchar *col_name, gboolean visible)
{
    GList *cols, *l;

    cols = gtk_tree_view_get_columns (GTK_TREE_VIEW (view));

    for (l = cols; l; l = l->next) {
        GtkTreeViewColumn *col = (GtkTreeViewColumn *) l->data;

        if (strcmp (gtk_tree_view_column_get_title (col), col_name) == 0) {
            gtk_tree_view_column_set_visible (col, visible);
            break;
        }
    }
}

static void
process_section (EMeetingListView *view, EABDestination **cards, icalparameter_role role)
{
    EMeetingListViewPrivate *priv;
    int i;

    priv = view->priv;
    for (i = 0; i < G_N_ELEMENTS (cards); i++) {
        const char *name, *attendee = NULL;
        char *attr = NULL;

        name = eab_destination_get_name (cards[i]);

        /* Get the field as attendee from the backend */
        if (e_cal_get_ldap_attribute (e_meeting_store_get_e_cal (priv->store),
                           &attr, NULL)) {
            /* FIXME this should be more general */
            if (!g_ascii_strcasecmp (attr, "icscalendar")) {
                EContact *contact;

                /* FIXME: this does not work, have to use first
                   eab_destination_use_contact() */
                contact = eab_destination_get_contact (cards[i]);
                if (contact) {
                    attendee = e_contact_get (contact, E_CONTACT_FREEBUSY_URL);
                    if (!attendee)
                        attendee = e_contact_get (contact, E_CONTACT_CALENDAR_URI);
                }
            }
        }

        /* If we couldn't get the attendee prior, get the email address as the default */
        if (attendee == NULL || *attendee == '\0') {
            attendee = eab_destination_get_email (cards[i]);
        }
        
        if (attendee == NULL || *attendee == '\0')
            continue;
        
        if (e_meeting_store_find_attendee (priv->store, attendee, NULL) == NULL) {
            EMeetingAttendee *ia = e_meeting_store_add_attendee_with_defaults (priv->store);

            e_meeting_attendee_set_address (ia, g_strdup_printf ("MAILTO:%s", attendee));
            e_meeting_attendee_set_role (ia, role);
            if (role == ICAL_ROLE_NONPARTICIPANT)
                e_meeting_attendee_set_cutype (ia, ICAL_CUTYPE_RESOURCE);
            e_meeting_attendee_set_cn (ia, g_strdup (name));
        }
    }
}

static void
select_names_ok_cb (BonoboListener *listener, const char *event_name, const CORBA_any *arg, CORBA_Environment *ev, gpointer data)
{
    EMeetingListView *view = E_MEETING_LIST_VIEW (data);
    int i;
    
    for (i = 0; sections[i] != NULL; i++) {
        EABDestination **destv;
        char *string = NULL;
        Bonobo_Control corba_control = GNOME_Evolution_Addressbook_SelectNames_getEntryBySection 
            (view->priv->corba_select_names, sections[i], ev);
        GtkWidget *control_widget = bonobo_widget_new_control_from_objref (corba_control, CORBA_OBJECT_NIL);

        bonobo_widget_get_property (BONOBO_WIDGET (control_widget), "destinations",
                        TC_CORBA_string, &string, NULL);
        destv = eab_destination_importv (string);
        if (destv) {
            process_section (view, destv, roles[i]);
            g_free (destv);
        }
    }
}

static void
add_section (GNOME_Evolution_Addressbook_SelectNames corba_select_names, const char *name)
{
    CORBA_Environment ev;

    CORBA_exception_init (&ev);

    GNOME_Evolution_Addressbook_SelectNames_addSection (
                    corba_select_names, name, gettext (name), &ev);

    CORBA_exception_free (&ev);
}

static gboolean
get_select_name_dialog (EMeetingListView *view) 
{
    EMeetingListViewPrivate *priv;
    CORBA_Environment ev;
    int i;
    
    priv = view->priv;

    CORBA_exception_init (&ev);

    if (priv->corba_select_names != CORBA_OBJECT_NIL) {
        int i;
        
        for (i = 0; sections[i] != NULL; i++) {         
            GtkWidget *control_widget;
            Bonobo_Control corba_control = GNOME_Evolution_Addressbook_SelectNames_getEntryBySection 
                            (priv->corba_select_names, sections[i], &ev);
            if (BONOBO_EX (&ev)) {
                CORBA_exception_free (&ev);
                return FALSE;               
            }
            
            control_widget = bonobo_widget_new_control_from_objref (corba_control, CORBA_OBJECT_NIL);
            
            bonobo_widget_set_property (BONOBO_WIDGET (control_widget), "text", TC_CORBA_string, "", NULL);     
        }
        CORBA_exception_free (&ev);

        return TRUE;
    }
    
    priv->corba_select_names = bonobo_activation_activate_from_id (SELECT_NAMES_OAFID, 0, NULL, &ev);

    for (i = 0; sections[i] != NULL; i++)
        add_section (priv->corba_select_names, sections[i]);

    bonobo_event_source_client_add_listener (priv->corba_select_names,
                         (BonoboListenerCallbackFn) select_names_ok_cb,
                         "GNOME/Evolution:ok:dialog", NULL, view);
    
    if (BONOBO_EX (&ev)) {
        CORBA_exception_free (&ev);
        return FALSE;
    }

    CORBA_exception_free (&ev);

    return TRUE;
}

void
e_meeting_list_view_invite_others_dialog (EMeetingListView *view)
{
    CORBA_Environment ev;
    
    if (!get_select_name_dialog (view))
        return;

    CORBA_exception_init (&ev);

    GNOME_Evolution_Addressbook_SelectNames_activateDialog (
                view->priv->corba_select_names, _("Required Participants"), &ev);

    CORBA_exception_free (&ev);
}