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/*
     This file is part of GNUnet
     (C) 2005, 2006, 2010 Christian Grothoff (and other contributing authors)

     GNUnet 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, or (at your
     option) any later version.

     GNUnet 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 GNUnet; see the file COPYING.  If not, write to the
     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
     Boston, MA 02111-1307, USA.
*/

/**
 * @file src/fs/gnunet-fs-gtk-main_window_open_directory.c
 * @author Christian Grothoff
 */
#include "gnunet-fs-gtk-common.h"
#include "gnunet-fs-gtk-event_handler.h"

struct AddChildContext
{
  const char *filename;
  GtkTreeStore *ts;
  struct SearchTab *tab;
  struct SearchResult *par;
  GtkTreeRowReference *prr;
  GtkTreeIter iter;
};


/**
 * Function used to process entries in a directory.
 *
 * @param cls closure, our 'struct AddChildContext*'
 * @param filename name of the file in the directory
 * @param uri URI of the file
 * @param metadata metadata for the file; metadata for
 *        the directory if everything else is NULL/zero
 * @param length length of the available data for the file
 *           (of type size_t since data must certainly fit
 *            into memory; if files are larger than size_t
 *            permits, then they will certainly not be
 *            embedded with the directory itself).
 * @param data data available for the file (length bytes)
 */
static void
add_child (void *cls, const char *filename, const struct GNUNET_FS_Uri *uri,
           const struct GNUNET_CONTAINER_MetaData *meta, size_t length,
           const void *data)
{
  struct AddChildContext *acc = cls;
  struct GNUNET_CONTAINER_MetaData *dmeta;
  GtkTreePath *tp;
  GtkTreeIter iter;

  if (uri == NULL)
  {
    /* directory meta data itself */
    dmeta = GNUNET_CONTAINER_meta_data_duplicate (meta);
    GNUNET_CONTAINER_meta_data_insert (dmeta, "<user>",
                                       EXTRACTOR_METATYPE_FILENAME,
                                       EXTRACTOR_METAFORMAT_UTF8,
                                       "text/plain", acc->filename,
                                       strlen (acc->filename) + 1);
    acc->tab = GNUNET_GTK_add_to_uri_tab (&acc->iter, &acc->par, dmeta, NULL);
    tp = gtk_tree_model_get_path (GTK_TREE_MODEL (acc->tab->ts), &acc->iter);
    acc->prr = gtk_tree_row_reference_new (GTK_TREE_MODEL (acc->tab->ts), tp);
    gtk_tree_path_free (tp);
    acc->ts = acc->tab->ts;
    GNUNET_CONTAINER_meta_data_destroy (dmeta);
    return;
  }
  if (acc->ts == NULL)
    return;
  GNUNET_assert (NULL !=
                 GNUNET_GTK_add_search_result (acc->tab, &iter, acc->prr, uri,
                                               meta, NULL, 0));
}

void
GNUNET_GTK_open_directory_dialog_response_cb (GtkDialog *dialog,
    gint response_id, gpointer user_data)
{
  GtkBuilder *builder;
  GtkWidget *ad;
  char *filename, *filename_utf8;
  struct AddChildContext acc;

  builder = GTK_BUILDER (user_data);
  ad = GTK_WIDGET (gtk_builder_get_object
                   (builder, "GNUNET_GTK_open_directory_dialog"));

  if (response_id != -5)
  {
    gtk_widget_destroy (ad);
    g_object_unref (G_OBJECT (builder));
    return;
  }

  filename = GNUNET_GTK_filechooser_get_filename_loc (GTK_FILE_CHOOSER (ad));
  filename_utf8 = GNUNET_GTK_filechooser_get_filename_utf8 (GTK_FILE_CHOOSER (ad));
  gtk_widget_destroy (ad);
  g_object_unref (G_OBJECT (builder));
  acc.filename = filename_utf8;
  acc.ts = NULL;
  GNUNET_FS_GTK_mmap_and_scan (filename, &add_child, &acc);
  g_free (filename_utf8);
  g_free (filename);
}

/**
 * User selected "Open directory" in menu.  Display dialog, open
 * file and then display a new tab with its contents.
 */
void
GNUNET_GTK_main_menu_file_open_gnunet_directory_activate_cb (GtkWidget * dummy,
                                                             gpointer data)
{
  GtkWidget *ad;
  GtkBuilder *builder;
  GtkWidget *toplevel;
  GtkFileFilter *ff;


  builder =
      GNUNET_GTK_get_new_builder ("gnunet_fs_gtk_open_directory_dialog.glade");
  if (builder == NULL)
  {
    GNUNET_break (0);
    return;
  }
  ad = GTK_WIDGET (gtk_builder_get_object
                   (builder, "GNUNET_GTK_open_directory_dialog"));
  ff = GTK_FILE_FILTER (gtk_builder_get_object
                        (builder, "gnunet_directory_filter"));
  /* FIXME: some day, write a custom file filter for gnunet-directories... */
  gtk_file_filter_add_pattern (ff, "*" GNUNET_FS_DIRECTORY_EXT);

  toplevel = gtk_widget_get_toplevel (dummy);
  if (GTK_IS_WINDOW (toplevel))
    gtk_window_set_transient_for (GTK_WINDOW (ad), GTK_WINDOW (toplevel));
  gtk_window_present (GTK_WINDOW (ad));
}

/* end of gnunet-fs-gtk-main_window_open_directory.c */