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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
 *
 *  Authors: Rodrigo Moya <rodrigo@novell.com>
 *
 *  Copyright 2004 Novell, Inc. (www.novell.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 Street #330, Boston, MA 02111-1307, USA.
 *
 */

/* This is prototype code only, this may, or may not, use undocumented
 * unstable or private internal function calls. */

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

#include <glib.h>
#include <glib/gi18n.h>
#ifdef USE_GTKFILECHOOSER
#  include <gtk/gtkfilechooser.h>
#  include <gtk/gtkfilechooserdialog.h>
#else
#  include <gtk/gtkfilesel.h>
#endif
#include <gtk/gtkmessagedialog.h>
#include <gtk/gtkstock.h>
#include <gtk/gtk.h>
#include <libedataserver/e-source.h>
#include <libedataserverui/e-source-selector.h>
#include <libecal/e-cal.h>
#include <calendar/gui/e-cal-popup.h>
#include <libgnomevfs/gnome-vfs.h>
#include <string.h>

#include "format-handler.h"

enum {  /* GtkComboBox enum */
    DEST_NAME_COLUMN,
    DEST_HANDLER,
    N_DEST_COLUMNS

};

void org_gnome_save_calendar (EPlugin *ep, ECalPopupTargetSource *target);
void org_gnome_save_tasks (EPlugin *ep, ECalPopupTargetSource *target);


static void 
extra_widget_foreach_hide (GtkWidget *widget, gpointer data)
{
    if (widget != data)
        gtk_widget_hide (widget);
}

static void 
on_type_combobox_changed (GtkComboBox *combobox, gpointer data)
{
    FormatHandler *handler = NULL;
    GtkWidget *extra_widget = data;
    GtkTreeIter iter;
    GtkTreeModel *model = gtk_combo_box_get_model (combobox);

    gtk_container_foreach (GTK_CONTAINER (extra_widget), 
        extra_widget_foreach_hide, combobox);

    gtk_combo_box_get_active_iter (combobox, &iter);

    gtk_tree_model_get (model, &iter, 
        DEST_HANDLER, &handler, -1);


    if (handler->options_widget)
    {
        gtk_widget_show (handler->options_widget);
    } 

}

static void 
format_handlers_foreach_free (gpointer data, gpointer user_data)
{
    FormatHandler *handler = data;

    if (handler->options_widget)
        gtk_widget_destroy (handler->options_widget);

    if (handler->data)
        g_free (handler->data);

    g_free (data);
}

static void 
ask_destination_and_save (EPlugin *ep, ECalPopupTargetSource *target, ECalSourceType type)
{
    FormatHandler *handler = NULL;

    GtkWidget *extra_widget = gtk_vbox_new (FALSE, 0);
    GtkComboBox *combo = GTK_COMBO_BOX(gtk_combo_box_new ());
    GtkTreeModel *model = GTK_TREE_MODEL (gtk_list_store_new 
        (N_DEST_COLUMNS, G_TYPE_STRING, G_TYPE_POINTER));
    GtkCellRenderer *renderer=NULL;
    GtkListStore *store = GTK_LIST_STORE (model);
    GtkTreeIter iter;
    GtkWidget *dialog = NULL;
    char *dest_uri = NULL;

    GList *format_handlers = NULL;

    /* The available formathandlers */
    format_handlers = g_list_append (format_handlers, 
        ical_format_handler_new ());
    format_handlers = g_list_append (format_handlers, 
        csv_format_handler_new ());
    format_handlers = g_list_append (format_handlers, 
        rdf_format_handler_new ());

    /* The Type GtkComboBox */
    gtk_box_pack_start (GTK_BOX (extra_widget), GTK_WIDGET (combo), 
        TRUE, TRUE, 0);
    gtk_combo_box_set_model (combo, model);

    gtk_list_store_clear (store);
    renderer = gtk_cell_renderer_text_new ();
    gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo), renderer, TRUE);
    gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo), 
            renderer, "text", DEST_NAME_COLUMN, NULL);

    while (format_handlers) {
        handler = format_handlers->data;
        gtk_list_store_append (store, &iter);
        gtk_list_store_set (store, &iter, DEST_NAME_COLUMN, 
            handler->combo_label, -1);
        gtk_list_store_set (store, &iter, DEST_HANDLER, handler, -1);

        if (handler->options_widget) {
            gtk_box_pack_start (GTK_BOX (extra_widget), 
                GTK_WIDGET (handler->options_widget), TRUE, TRUE, 0);
            gtk_widget_hide (handler->options_widget);
        }

        if (handler->isdefault) {
            gtk_combo_box_set_active_iter (combo, &iter);
            if (handler->options_widget)
                gtk_widget_show (handler->options_widget);
        }

        format_handlers = g_list_next (format_handlers);
    }


    g_signal_connect (G_OBJECT(combo), "changed", 
        G_CALLBACK (on_type_combobox_changed), extra_widget);

#ifdef USE_GTKFILECHOOSER

    dialog = gtk_file_chooser_dialog_new (_("Select destination file"),
                          NULL,
                          GTK_FILE_CHOOSER_ACTION_SAVE,
                          GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
                          GTK_STOCK_SAVE_AS, GTK_RESPONSE_OK,
                          NULL);

    gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_OK);
    gtk_file_chooser_set_extra_widget (GTK_FILE_CHOOSER (dialog), extra_widget);
#else
    dialog = gtk_file_selection_new (_("Select destination file"));
    gtk_box_pack_start (GTK_BOX (GTK_FILE_SELECTION (dialog)->main_vbox), extra_widget, FALSE, TRUE, 0);
#endif
    gtk_widget_show (GTK_WIDGET(combo));
    gtk_widget_show (extra_widget);


    if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_OK) {
        char *tmp = NULL;

        gtk_combo_box_get_active_iter (combo, &iter);
        gtk_tree_model_get (model, &iter, 
            DEST_HANDLER, &handler, -1);

#ifdef USE_GTKFILECHOOSER
           dest_uri = gtk_file_chooser_get_uri 
            (GTK_FILE_CHOOSER (dialog));
#else
           dest_uri = g_strdup (gtk_file_selection_get_filename 
            (GTK_FILE_SELECTION (dialog)));
#endif

        tmp = strstr (dest_uri, handler->filename_ext);

        if (!(tmp && *(tmp + strlen (handler->filename_ext)) == '\0')) {

            char *temp;
            temp = g_strconcat (dest_uri, handler->filename_ext, NULL);
            g_free (dest_uri);
            dest_uri = temp;
        }

        handler->save (handler, ep, target, type, dest_uri);
    }

    /* Free the handlers */
    g_list_foreach (format_handlers, format_handlers_foreach_free, NULL);
    g_list_free (format_handlers);

    /* Now we can destroy it */
    gtk_widget_destroy (dialog);    
    g_free (dest_uri);

}

void
org_gnome_save_calendar (EPlugin *ep, ECalPopupTargetSource *target)
{
    ask_destination_and_save (ep, target, E_CAL_SOURCE_TYPE_EVENT);
}

void
org_gnome_save_tasks (EPlugin *ep, ECalPopupTargetSource *target)
{
    ask_destination_and_save (ep, target, E_CAL_SOURCE_TYPE_TODO);
}