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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* tasks-control.c
 *
 * Copyright (C) 2000  Ximian, Inc.
 *
 * 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.
 *
 * Authors: Damon Chaplin <damon@ximian.com>
 *      Ettore Perazzoli
 */

#include <config.h>
#include <gtk/gtksignal.h>
#include <libgnome/gnome-defs.h>
#include <libgnome/gnome-i18n.h>
#include <libgnome/gnome-util.h>
#include <bonobo/bonobo-control.h>
#include <bonobo/bonobo-ui-util.h>
#include "calendar-config.h"
#include "e-tasks.h"
#include "tasks-control.h"
#include "evolution-shell-component-utils.h"

#define TASKS_CONTROL_PROPERTY_URI      "folder_uri"
#define TASKS_CONTROL_PROPERTY_URI_IDX      1


static void tasks_control_properties_init   (BonoboControl      *control,
                         ETasks         *tasks);
static void tasks_control_get_property      (BonoboPropertyBag  *bag,
                         BonoboArg      *arg,
                         guint           arg_id,
                         CORBA_Environment      *ev,
                         gpointer        user_data);
static void tasks_control_set_property      (BonoboPropertyBag  *bag,
                         const BonoboArg    *arg,
                         guint           arg_id,
                         CORBA_Environment      *ev,
                         gpointer        user_data);
static void tasks_control_activate_cb       (BonoboControl      *control,
                         gboolean        activate,
                         gpointer        user_data);
static void tasks_control_activate      (BonoboControl      *control,
                         ETasks         *tasks);
static void tasks_control_deactivate        (BonoboControl      *control,
                         ETasks         *tasks);

static void tasks_control_new_task_cmd      (BonoboUIComponent  *uic,
                         gpointer        data,
                         const char     *path);
static void tasks_control_cut_cmd               (BonoboUIComponent      *uic,
                         gpointer                data,
                         const gchar            *path);
static void tasks_control_copy_cmd              (BonoboUIComponent      *uic,
                         gpointer                data,
                         const gchar            *path);
static void tasks_control_paste_cmd             (BonoboUIComponent      *uic,
                         gpointer                data,
                         const gchar            *path);
static void tasks_control_delete_cmd        (BonoboUIComponent  *uic,
                         gpointer        data,
                         const char     *path);


BonoboControl *
tasks_control_new           (void)
{
    BonoboControl *control;
    GtkWidget *tasks;

    tasks = e_tasks_new ();
    if (!tasks)
        return NULL;

    gtk_widget_show (tasks);

    control = bonobo_control_new (tasks);
    if (!control) {
        g_message ("control_factory_fn(): could not create the control!");
        return NULL;
    }

    tasks_control_properties_init (control, E_TASKS (tasks));

    gtk_signal_connect (GTK_OBJECT (control), "activate",
                GTK_SIGNAL_FUNC (tasks_control_activate_cb),
                tasks);

    return control;
}


/* Creates the property bag for our new control. */
static void
tasks_control_properties_init       (BonoboControl      *control,
                     ETasks         *tasks)
                     
{
    BonoboPropertyBag *pbag;

    pbag = bonobo_property_bag_new (tasks_control_get_property,
                    tasks_control_set_property, tasks);

    bonobo_property_bag_add (pbag,
                 TASKS_CONTROL_PROPERTY_URI,
                 TASKS_CONTROL_PROPERTY_URI_IDX,
                 BONOBO_ARG_STRING,
                 NULL,
                 _("The URI of the tasks folder to display"),
                 0);

    bonobo_control_set_properties (control, pbag);
    bonobo_object_unref (BONOBO_OBJECT (pbag));
}


/* Gets a property of our control. FIXME: Finish. */
static void
tasks_control_get_property      (BonoboPropertyBag  *bag,
                     BonoboArg      *arg,
                     guint           arg_id,
                     CORBA_Environment      *ev,
                     gpointer        user_data)
{
    /*GnomeCalendar *gcal = user_data;*/

    switch (arg_id) {

    case TASKS_CONTROL_PROPERTY_URI_IDX:
        /*
        if (fb && fb->uri)
            BONOBO_ARG_SET_STRING (arg, fb->uri);
        else
            BONOBO_ARG_SET_STRING (arg, "");
        */
        break;

    default:
        g_warning ("Unhandled arg %d\n", arg_id);
    }
}


static void
tasks_control_set_property      (BonoboPropertyBag  *bag,
                     const BonoboArg    *arg,
                     guint           arg_id,
                     CORBA_Environment      *ev,
                     gpointer        user_data)
{
    ETasks *tasks = user_data;
    char *filename;

    switch (arg_id) {

    case TASKS_CONTROL_PROPERTY_URI_IDX:
        filename = g_strdup_printf ("%s/tasks.ics",
                        BONOBO_ARG_GET_STRING (arg));
        e_tasks_open (tasks, filename);
        g_free (filename);
        break;

    default:
        g_warning ("Unhandled arg %d\n", arg_id);
        break;
    }
}


static void
tasks_control_activate_cb       (BonoboControl      *control,
                     gboolean        activate,
                     gpointer        user_data)
{
    ETasks *tasks;

    tasks = E_TASKS (user_data);

    if (activate)
        tasks_control_activate (control, tasks);
    else
        tasks_control_deactivate (control, tasks);
}

/* Sensitizes the UI Component menu/toolbar commands based on the number of
 * selected tasks.
 */
static void
sensitize_commands (ETasks *tasks, BonoboControl *control, int n_selected)
{
    BonoboUIComponent *uic;

    uic = bonobo_control_get_ui_component (control);
    g_assert (uic != NULL);

    bonobo_ui_component_set_prop (uic, "/commands/TasksDelete", "sensitive",
                      n_selected == 0 ? "0" : "1",
                      NULL);
}

/* Callback used when the selection in the table changes */
static void
selection_changed_cb (ETasks *tasks, int n_selected, gpointer data)
{
    BonoboControl *control;

    control = BONOBO_CONTROL (data);

    sensitize_commands (tasks, control, n_selected);
}

static BonoboUIVerb verbs [] = {
    BONOBO_UI_VERB ("TasksNewTask", tasks_control_new_task_cmd),
    BONOBO_UI_VERB ("TasksCut", tasks_control_cut_cmd),
    BONOBO_UI_VERB ("TasksCopy", tasks_control_copy_cmd),
    BONOBO_UI_VERB ("TasksPaste", tasks_control_paste_cmd),
    BONOBO_UI_VERB ("TasksDelete", tasks_control_delete_cmd),

    BONOBO_UI_VERB_END
};

static EPixmap pixmaps [] = {
    E_PIXMAP ("/menu/File/New/NewFirstItem/NewTask",    "evolution-tasks-mini.png"),
    E_PIXMAP ("/menu/File/Print/Print", "print.xpm"),
    E_PIXMAP_END
};

static void
tasks_control_activate (BonoboControl *control, ETasks *tasks)
{
    Bonobo_UIContainer remote_uih;
    BonoboUIComponent *uic;
    int n_selected;
    ECalendarTable *cal_table;
    ETable *etable;

    uic = bonobo_control_get_ui_component (control);
    g_assert (uic != NULL);

    remote_uih = bonobo_control_get_remote_ui_container (control);
    bonobo_ui_component_set_container (uic, remote_uih);
    bonobo_object_release_unref (remote_uih, NULL);

    bonobo_ui_component_add_verb_list_with_data (uic, verbs, tasks);

    bonobo_ui_component_freeze (uic, NULL);

    bonobo_ui_util_set_ui (uic, EVOLUTION_DATADIR,
                   "evolution-tasks.xml",
                   "evolution-tasks");

    e_tasks_setup_menus(tasks, uic);

    e_pixmaps_update (uic, pixmaps);

    gtk_signal_connect (GTK_OBJECT (tasks), "selection_changed",
                GTK_SIGNAL_FUNC (selection_changed_cb), control);

    cal_table = e_tasks_get_calendar_table (tasks);
    etable = e_calendar_table_get_table (cal_table);
    n_selected = e_table_selected_count (etable);

    sensitize_commands (tasks, control, n_selected);

    bonobo_ui_component_thaw (uic, NULL);

    /* Show the dialog for setting the timezone if the user hasn't chosen
       a default timezone already. */
    calendar_config_check_timezone_set ();
}


static void
tasks_control_deactivate (BonoboControl *control, ETasks *tasks)
{
    BonoboUIComponent *uic = bonobo_control_get_ui_component (control);
    g_assert (uic != NULL);

    /* Stop monitoring the "selection_changed" signal */
    gtk_signal_disconnect_by_data (GTK_OBJECT (tasks), control);

    bonobo_ui_component_rm (uic, "/", NULL);
    bonobo_ui_component_unset_container (uic);
}


static void
tasks_control_new_task_cmd      (BonoboUIComponent  *uic,
                     gpointer        data,
                     const char     *path)
{
    ETasks *tasks;

    tasks = E_TASKS (data);
    e_tasks_new_task (tasks);
}

static void
tasks_control_cut_cmd                   (BonoboUIComponent      *uic,
                     gpointer                data,
                     const char             *path)
{
    ETasks *tasks;
    ECalendarTable *cal_table;

    tasks = E_TASKS (data);
    cal_table = e_tasks_get_calendar_table (tasks);
    e_calendar_table_cut_clipboard (tasks);
}

static void
tasks_control_copy_cmd                  (BonoboUIComponent      *uic,
                     gpointer                data,
                     const char             *path)
{
    ETasks *tasks;
    ECalendarTable *cal_table;

    tasks = E_TASKS (data);
    cal_table = e_tasks_get_calendar_table (tasks);
    e_calendar_table_copy_clipboard (tasks);
}

static void
tasks_control_paste_cmd                 (BonoboUIComponent      *uic,
                     gpointer                data,
                     const char             *path)
{
    ETasks *tasks;
    ECalendarTable *cal_table;

    tasks = E_TASKS (data);
    cal_table = e_tasks_get_calendar_table (tasks);
    e_calendar_table_paste_clipboard (cal_table);
}

static void
tasks_control_delete_cmd        (BonoboUIComponent  *uic,
                     gpointer        data,
                     const char     *path)
{
    ETasks *tasks;

    tasks = E_TASKS (data);
    e_tasks_delete_selected (tasks);
}