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/*
This file is part of GNUnet
(C) 2006 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/common/iterators.c
* @brief This file contains GTK helper functions related to iterations
* @author Igor Wronsky
* @author Christian Grothoff
*/
#include "platform.h"
#include "gnunetgtk_common.h"
#include <GNUnet/gnunet_util_crypto.h>
#include <glib.h>
/**
* Identical to "gtk_tree_selection_selected_foreach",
* except that modifications of the underlying model
* during the iteration are tolerated.
*/
void
GNUNET_GTK_tree_selection_selected_foreach (GtkTreeSelection * selection,
GtkTreeSelectionForeachFunc func,
gpointer data)
{
unsigned int i;
unsigned int size;
GList *selected;
GtkTreeRowReference **refs;
GtkTreeModel *model;
GtkTreePath *path;
GtkTreeIter iter;
selected = gtk_tree_selection_get_selected_rows (selection, &model);
i = g_list_length (selected);
size = 0;
refs = NULL;
GNUNET_array_grow (refs, size, i);
for (i = 0; i < size; i++)
refs[i] = gtk_tree_row_reference_new (model,
g_list_nth_data (selected, i));
g_list_foreach (selected, (GFunc) & gtk_tree_path_free, NULL);
g_list_free (selected);
for (i = 0; i < size; i++)
{
path = gtk_tree_row_reference_get_path (refs[i]);
gtk_tree_row_reference_free (refs[i]);
if (TRUE == gtk_tree_model_get_iter (model, &iter, path))
func (model, path, &iter, data);
gtk_tree_path_free (path);
}
GNUNET_array_grow (refs, size, 0);
}
typedef struct
{
GtkTreeRowReference **refs;
unsigned int pos;
unsigned int size;
} CollectData;
static gboolean
collectAllRows (GtkTreeModel * model,
GtkTreePath * path, GtkTreeIter * iter, gpointer cls)
{
CollectData *cd = cls;
if (cd->size == cd->pos)
GNUNET_array_grow (cd->refs, cd->size, cd->size * 2 + 4);
cd->refs[cd->pos++] = gtk_tree_row_reference_new (model, path);
return FALSE;
}
/**
* Identical to "gtk_tree_model_foreach",
* except that modifications of the underlying model
* during the iteration are tolerated.
*/
void
GNUNET_GTK_tree_model_foreach (GtkTreeModel * model,
GtkTreeSelectionForeachFunc func,
gpointer data)
{
int i;
GtkTreePath *path;
GtkTreeIter iter;
CollectData cd;
memset (&cd, 0, sizeof (CollectData));
gtk_tree_model_foreach (model, &collectAllRows, &cd);
for (i = cd.pos - 1; i >= 0; i--)
{
path = gtk_tree_row_reference_get_path (cd.refs[i]);
gtk_tree_row_reference_free (cd.refs[i]);
if (TRUE == gtk_tree_model_get_iter (model, &iter, path))
func (model, path, &iter, data);
gtk_tree_path_free (path);
}
GNUNET_array_grow (cd.refs, cd.size, 0);
}
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