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/* Evolution calendar - Delete calendar component dialog
 *
 * Copyright (C) 2001 Ximian, Inc.
 *
 * Author: Federico Mena-Quintero <federico@ximian.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.
 */

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

#include <glib.h>
#include <gtk/gtkstock.h>
#include <gtk/gtkmessagedialog.h>
#include <libgnome/gnome-i18n.h>
#include <gal/widgets/e-unicode.h>
#include "../calendar-config.h"
#include "delete-comp.h"



/**
 * delete_component_dialog:
 * @comp: A calendar component if a single component is to be deleted, or NULL
 * if more that one component is to be deleted.
 * @consider_as_untitled: If deleting more than one component, this is ignored.
 * Otherwise, whether to consider the component as not having a summary; if
 * FALSE then the component's summary string will be used.
 * @n_comps: Number of components that are to be deleted.
 * @vtype: Type of the components that are to be deleted.  This is ignored
 * if only one component is to be deleted, and the vtype is extracted from
 * the component instead.
 * @widget: A widget to use as a basis for conversion from UTF8 into font
 * encoding.
 * 
 * Pops up a dialog box asking the user whether he wants to delete a number of
 * calendar components.  The dialog will not appear, however, if the
 * configuration option for confirmation is turned off.
 * 
 * Return value: TRUE if the user clicked Yes, FALSE otherwise.  If the
 * configuration option for confirmation is turned off, this function will
 * unconditionally return TRUE.
 **/
gboolean
delete_component_dialog (CalComponent *comp,
             gboolean consider_as_untitled,
             int n_comps, CalComponentVType vtype,
             GtkWidget *widget)
{
    char *str;
    GtkWidget *dialog;
    int ret;

    if (comp) {
        g_return_val_if_fail (IS_CAL_COMPONENT (comp), FALSE);
        g_return_val_if_fail (n_comps == 1, FALSE);
    } else {
        g_return_val_if_fail (n_comps > 1, FALSE);
        g_return_val_if_fail (vtype != CAL_COMPONENT_NO_TYPE, FALSE);
    }

    g_return_val_if_fail (widget != NULL, FALSE);
    g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);

    if (!calendar_config_get_confirm_delete ())
        return TRUE;

    if (comp) {
        CalComponentText summary;
        char *tmp;

        vtype = cal_component_get_vtype (comp);

        if (!consider_as_untitled) {
            cal_component_get_summary (comp, &summary);
            tmp = g_strdup (summary.value);
        } else
            tmp = NULL;

        switch (vtype) {
        case CAL_COMPONENT_EVENT:
            if (tmp)
                str = g_strdup_printf (_("Are you sure you want to delete "
                             "the appointment `%s'?"), tmp);
            else
                str = g_strdup (_("Are you sure you want to delete this "
                          "untitled appointment?"));
            break;

        case CAL_COMPONENT_TODO:
            if (tmp)
                str = g_strdup_printf (_("Are you sure you want to delete "
                             "the task `%s'?"), tmp);
            else
                str = g_strdup (_("Are you sure you want to delete this "
                          "untitled task?"));
            break;

        case CAL_COMPONENT_JOURNAL:
            if (tmp)
                str = g_strdup_printf (_("Are you sure you want to delete "
                             "the journal entry `%s'?"), tmp);
            else
                str = g_strdup (_("Are you sure want to delete this "
                          "untitled journal entry?"));
            break;

        default:
            g_message ("delete_component_dialog(): Cannot handle object of type %d",
                   vtype);
            g_free (tmp);
            return FALSE;
        }

        g_free (tmp);
    } else {
        switch (vtype) {
        case CAL_COMPONENT_EVENT:
            str = g_strdup_printf (_("Are you sure you want to delete "
                         "%d appointments?"), n_comps);
            break;

        case CAL_COMPONENT_TODO:
            str = g_strdup_printf (_("Are you sure you want to delete "
                         "%d tasks?"), n_comps);
            break;

        case CAL_COMPONENT_JOURNAL:
            str = g_strdup_printf (_("Are you sure you want to delete "
                         "%d journal entries?"), n_comps);
            break;

        default:
            g_message ("delete_component_dialog(): Cannot handle objects of type %d",
                   vtype);
            return FALSE;
        }
    }

    dialog = gtk_message_dialog_new ((GtkWindow *)gtk_widget_get_toplevel (widget),
                     0, GTK_MESSAGE_QUESTION, GTK_BUTTONS_YES_NO, "%s", str);
    g_free (str);
    ret = gtk_dialog_run ((GtkDialog *)dialog) == GTK_RESPONSE_YES;
    gtk_widget_destroy (dialog);

    return ret;
}