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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

/* Evolution calendar - Event editor dialog
 *
 * Copyright (C) 2000 Ximian, Inc.
 * Copyright (C) 2001 Ximian, Inc.
 *
 * Authors: Miguel de Icaza <miguel@ximian.com>
 *          Federico Mena-Quintero <federico@ximian.com>
 *          Seth Alves <alves@hungry.com>
 *
 * 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.
 */

#include <config.h>
#include <string.h>
#include <glade/glade.h>
#include <gal/widgets/e-unicode.h>
#include <libgnome/gnome-i18n.h>
#include <widgets/misc/e-dateedit.h>

#include "event-page.h"
#include "alarm-page.h"
#include "recurrence-page.h"
#include "meeting-page.h"
#include "schedule-page.h"
#include "cancel-comp.h"
#include "event-editor.h"

struct _EventEditorPrivate {
    EventPage *event_page;
    AlarmPage *alarm_page;
    RecurrencePage *recur_page;
    MeetingPage *meet_page;
    SchedulePage *sched_page;

    EMeetingModel *model;

    gboolean meeting_shown;
    gboolean updating;  
};



static void event_editor_class_init (EventEditorClass *class);
static void event_editor_init (EventEditor *ee);
static void event_editor_set_cal_client (CompEditor *editor, CalClient *client);
static void event_editor_edit_comp (CompEditor *editor, CalComponent *comp);
static gboolean event_editor_send_comp (CompEditor *editor, CalComponentItipMethod method);
static void event_editor_destroy (GtkObject *object);

static void schedule_meeting_cmd (GtkWidget *widget, gpointer data);
static void refresh_meeting_cmd (GtkWidget *widget, gpointer data);
static void cancel_meeting_cmd (GtkWidget *widget, gpointer data);
static void forward_cmd (GtkWidget *widget, gpointer data);

static void model_row_changed_cb (ETableModel *etm, int row, gpointer data);
static void row_count_changed_cb (ETableModel *etm, int row, int count, gpointer data);

static EPixmap pixmaps [] = {
    E_PIXMAP ("/Toolbar/Actions/ActionScheduleMeeting", "schedule-meeting-24.png"),
    E_PIXMAP_END
};

static BonoboUIVerb verbs [] = {
    BONOBO_UI_UNSAFE_VERB ("ActionScheduleMeeting", schedule_meeting_cmd),
    BONOBO_UI_UNSAFE_VERB ("ActionRefreshMeeting", refresh_meeting_cmd),
    BONOBO_UI_UNSAFE_VERB ("ActionCancelMeeting", cancel_meeting_cmd),
    BONOBO_UI_UNSAFE_VERB ("ActionForward", forward_cmd),

    BONOBO_UI_VERB_END
};

static CompEditorClass *parent_class;



/**
 * event_editor_get_type:
 *
 * Registers the #EventEditor class if necessary, and returns the type ID
 * associated to it.
 *
 * Return value: The type ID of the #EventEditor class.
 **/
GtkType
event_editor_get_type (void)
{
    static GtkType event_editor_type = 0;

    if (!event_editor_type) {
        static const GtkTypeInfo event_editor_info = {
            "EventEditor",
            sizeof (EventEditor),
            sizeof (EventEditorClass),
            (GtkClassInitFunc) event_editor_class_init,
            (GtkObjectInitFunc) event_editor_init,
            NULL, /* reserved_1 */
            NULL, /* reserved_2 */
            (GtkClassInitFunc) NULL
        };

        event_editor_type = gtk_type_unique (TYPE_COMP_EDITOR,
                             &event_editor_info);
    }

    return event_editor_type;
}

/* Class initialization function for the event editor */
static void
event_editor_class_init (EventEditorClass *klass)
{
    GtkObjectClass *object_class;
    CompEditorClass *editor_class;
    
    object_class = (GtkObjectClass *) klass;
    editor_class = (CompEditorClass *) klass;

    parent_class = gtk_type_class (TYPE_COMP_EDITOR);

    editor_class->set_cal_client = event_editor_set_cal_client;
    editor_class->edit_comp = event_editor_edit_comp;
    editor_class->send_comp = event_editor_send_comp;
    
    object_class->destroy = event_editor_destroy;
}

static void
set_menu_sens (EventEditor *ee) 
{
    EventEditorPrivate *priv;
    gboolean sens, existing, user;
    
    priv = ee->priv;

    existing = comp_editor_get_existing_org (COMP_EDITOR (ee));
    user = comp_editor_get_user_org (COMP_EDITOR (ee));

    sens = priv->meeting_shown;
    comp_editor_set_ui_prop (COMP_EDITOR (ee), 
                 "/commands/ActionScheduleMeeting", 
                 "sensitive", sens ? "0" : "1");

    sens = priv->meeting_shown && existing && !user;
    comp_editor_set_ui_prop (COMP_EDITOR (ee), 
                 "/commands/ActionRefreshMeeting", 
                 "sensitive", sens ? "1" : "0");

    sens = priv->meeting_shown && existing && user;
    comp_editor_set_ui_prop (COMP_EDITOR (ee), 
                 "/commands/ActionCancelMeeting", 
                 "sensitive", sens ? "1" : "0");
}

static void
init_widgets (EventEditor *ee)
{
    EventEditorPrivate *priv;

    priv = ee->priv;

    gtk_signal_connect (GTK_OBJECT (priv->model), "model_row_changed",
                GTK_SIGNAL_FUNC (model_row_changed_cb), ee);
    gtk_signal_connect (GTK_OBJECT (priv->model), "model_rows_inserted",
                GTK_SIGNAL_FUNC (row_count_changed_cb), ee);
    gtk_signal_connect (GTK_OBJECT (priv->model), "model_rows_deleted",
                GTK_SIGNAL_FUNC (row_count_changed_cb), ee);
}

/* Object initialization function for the event editor */
static void
event_editor_init (EventEditor *ee)
{
    EventEditorPrivate *priv;
    
    priv = g_new0 (EventEditorPrivate, 1);
    ee->priv = priv;

    priv->event_page = event_page_new ();
    comp_editor_append_page (COMP_EDITOR (ee), 
                 COMP_EDITOR_PAGE (priv->event_page),
                 _("Appointment"));

    priv->alarm_page = alarm_page_new ();
    comp_editor_append_page (COMP_EDITOR (ee),
                 COMP_EDITOR_PAGE (priv->alarm_page),
                 _("Reminder"));

    priv->recur_page = recurrence_page_new ();
    comp_editor_append_page (COMP_EDITOR (ee),
                 COMP_EDITOR_PAGE (priv->recur_page),
                 _("Recurrence"));
    
    priv->model = E_MEETING_MODEL (e_meeting_model_new ());
    
    priv->sched_page = schedule_page_new (priv->model);
    comp_editor_append_page (COMP_EDITOR (ee),
                 COMP_EDITOR_PAGE (priv->sched_page),
                 _("Scheduling"));

    priv->meet_page = meeting_page_new (priv->model);
    comp_editor_append_page (COMP_EDITOR (ee),
                 COMP_EDITOR_PAGE (priv->meet_page),
                 _("Meeting"));

    comp_editor_merge_ui (COMP_EDITOR (ee), "evolution-event-editor.xml", verbs, pixmaps);

    priv->meeting_shown = TRUE;
    priv->updating = FALSE; 

    init_widgets (ee);
    set_menu_sens (ee); 
}

static void
event_editor_set_cal_client (CompEditor *editor, CalClient *client)
{
    EventEditor *ee;
    EventEditorPrivate *priv;
    
    ee = EVENT_EDITOR (editor);
    priv = ee->priv;

    e_meeting_model_set_cal_client (priv->model, client);
    
    if (parent_class->set_cal_client)
        parent_class->set_cal_client (editor, client);  
}

static void
event_editor_edit_comp (CompEditor *editor, CalComponent *comp)
{
    EventEditor *ee;
    EventEditorPrivate *priv;
    CalComponentOrganizer organizer;
    GSList *attendees = NULL;
    
    ee = EVENT_EDITOR (editor);
    priv = ee->priv;
    
    priv->updating = TRUE;
    
    if (parent_class->edit_comp)
        parent_class->edit_comp (editor, comp);

    /* Get meeting related stuff */
    cal_component_get_organizer (comp, &organizer);
    cal_component_get_attendee_list (comp, &attendees);

    /* Clear things up */
    e_meeting_model_restricted_clear (priv->model);
    e_meeting_model_remove_all_attendees (priv->model);

    /* Set up the attendees */
    if (attendees == NULL) {
        comp_editor_remove_page (editor, COMP_EDITOR_PAGE (priv->meet_page));
        comp_editor_remove_page (editor, COMP_EDITOR_PAGE (priv->sched_page));
        priv->meeting_shown = FALSE;
    } else {
        GSList *l;

        if (!priv->meeting_shown) {
            comp_editor_append_page (COMP_EDITOR (ee),
                         COMP_EDITOR_PAGE (priv->sched_page),
                         _("Scheduling"));
            comp_editor_append_page (COMP_EDITOR (ee),
                         COMP_EDITOR_PAGE (priv->meet_page),
                         _("Meeting"));
        }
    
        for (l = attendees; l != NULL; l = l->next) {
            CalComponentAttendee *ca = l->data;
            EMeetingAttendee *ia;

            ia = E_MEETING_ATTENDEE (e_meeting_attendee_new_from_cal_component_attendee (ca));
            e_meeting_model_add_attendee (priv->model, ia);
            
            gtk_object_unref (GTK_OBJECT (ia));
        }

        if (organizer.value != NULL) {
            GList *addresses, *l;
            const char *strip;
            int row;

            strip = itip_strip_mailto (organizer.value);

            addresses = itip_addresses_get ();
            for (l = addresses; l != NULL; l = l->next) {
                ItipAddress *a = l->data;
                
                if (e_meeting_model_find_attendee (priv->model, a->address, &row))
                    e_meeting_model_restricted_add (priv->model, row);
            }
            itip_addresses_free (addresses);
        }
        
        if (comp_editor_get_user_org (editor))
            e_meeting_model_restricted_clear (priv->model);

        priv->meeting_shown = TRUE;
    }   
    cal_component_free_attendee_list (attendees);

    set_menu_sens (ee);
    comp_editor_set_needs_send (COMP_EDITOR (ee), priv->meeting_shown && itip_organizer_is_user (comp));
    
    priv->updating = FALSE;
}

static gboolean
event_editor_send_comp (CompEditor *editor, CalComponentItipMethod method)
{
    EventEditor *ee = EVENT_EDITOR (editor);
    EventEditorPrivate *priv;
    CalComponent *comp = NULL;

    priv = ee->priv;

    /* Don't cancel more than once or when just publishing */
    if (method == CAL_COMPONENT_METHOD_PUBLISH ||
        method == CAL_COMPONENT_METHOD_CANCEL)
        goto parent;
    
    comp = meeting_page_get_cancel_comp (priv->meet_page);
    if (comp != NULL) {
        CalClient *client;
        gboolean result;
        
        client = e_meeting_model_get_cal_client (priv->model);
        result = itip_send_comp (CAL_COMPONENT_METHOD_CANCEL, comp, client, NULL);
        gtk_object_unref (GTK_OBJECT (comp));

        if (!result)
            return FALSE;
    }

 parent:
    if (parent_class->send_comp)
        return parent_class->send_comp (editor, method);

    return FALSE;
}

/* Destroy handler for the event editor */
static void
event_editor_destroy (GtkObject *object)
{
    EventEditor *ee;
    EventEditorPrivate *priv;

    g_return_if_fail (object != NULL);
    g_return_if_fail (IS_EVENT_EDITOR (object));

    ee = EVENT_EDITOR (object);
    priv = ee->priv;

    gtk_object_unref (GTK_OBJECT (priv->event_page));
    gtk_object_unref (GTK_OBJECT (priv->alarm_page));
    gtk_object_unref (GTK_OBJECT (priv->recur_page));
    gtk_object_unref (GTK_OBJECT (priv->meet_page));
    gtk_object_unref (GTK_OBJECT (priv->sched_page));

    gtk_object_destroy (GTK_OBJECT (priv->model));
    gtk_object_unref (GTK_OBJECT (priv->model));

    if (GTK_OBJECT_CLASS (parent_class)->destroy)
        (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}

/**
 * event_editor_new:
 *
 * Creates a new event editor dialog.
 *
 * Return value: A newly-created event editor dialog, or NULL if the event
 * editor could not be created.
 **/
EventEditor *
event_editor_new (void)
{
    return EVENT_EDITOR (gtk_type_new (TYPE_EVENT_EDITOR));
}

static void
show_meeting (EventEditor *ee)
{
    EventEditorPrivate *priv;

    priv = ee->priv;

    if (!priv->meeting_shown) {
        comp_editor_append_page (COMP_EDITOR (ee),
                     COMP_EDITOR_PAGE (priv->sched_page),
                     _("Scheduling"));
        comp_editor_append_page (COMP_EDITOR (ee),
                     COMP_EDITOR_PAGE (priv->meet_page),
                     _("Meeting"));
        priv->meeting_shown = TRUE;

        set_menu_sens (ee);
        comp_editor_set_changed (COMP_EDITOR (ee), priv->meeting_shown);
        comp_editor_set_needs_send (COMP_EDITOR (ee), priv->meeting_shown);
    }
    
    comp_editor_show_page (COMP_EDITOR (ee),
                   COMP_EDITOR_PAGE (priv->meet_page));
}

void
event_editor_show_meeting (EventEditor *ee)
{
    g_return_if_fail (ee != NULL);
    g_return_if_fail (IS_EVENT_EDITOR (ee));


    show_meeting (ee);
}

static void
schedule_meeting_cmd (GtkWidget *widget, gpointer data)
{
    EventEditor *ee = EVENT_EDITOR (data);

    show_meeting (ee);
}

static void
refresh_meeting_cmd (GtkWidget *widget, gpointer data)
{
    EventEditor *ee = EVENT_EDITOR (data);
    
    comp_editor_send_comp (COMP_EDITOR (ee), CAL_COMPONENT_METHOD_REFRESH);
}

static void
cancel_meeting_cmd (GtkWidget *widget, gpointer data)
{
    EventEditor *ee = EVENT_EDITOR (data);
    CalComponent *comp;
    
    comp = comp_editor_get_current_comp (COMP_EDITOR (ee));
    if (cancel_component_dialog (comp, FALSE)) {
        comp_editor_send_comp (COMP_EDITOR (ee), CAL_COMPONENT_METHOD_CANCEL);
        comp_editor_delete_comp (COMP_EDITOR (ee));
    }
}

static void
forward_cmd (GtkWidget *widget, gpointer data)
{
    EventEditor *ee = EVENT_EDITOR (data);

    if (comp_editor_save_comp (COMP_EDITOR (ee), TRUE))
        comp_editor_send_comp (COMP_EDITOR (ee), CAL_COMPONENT_METHOD_PUBLISH);
}

static void
model_row_changed_cb (ETableModel *etm, int row, gpointer data)
{
    EventEditor *ee = EVENT_EDITOR (data);
    EventEditorPrivate *priv;
    
    priv = ee->priv;
    
    if (!priv->updating) {
        comp_editor_set_changed (COMP_EDITOR (ee), TRUE);
        comp_editor_set_needs_send (COMP_EDITOR (ee), TRUE);
    }
}

static void
row_count_changed_cb (ETableModel *etm, int row, int count, gpointer data)
{
    EventEditor *ee = EVENT_EDITOR (data);
    EventEditorPrivate *priv;
    
    priv = ee->priv;
    
    if (!priv->updating) {
        comp_editor_set_changed (COMP_EDITOR (ee), TRUE);
        comp_editor_set_needs_send (COMP_EDITOR (ee), TRUE);
    }
}