#include <gtk/gtk.h>

static GtkTreeModel *

create_model (void)

{

  GtkTreeStore *store;

  GtkTreeIter iter;

  GtkTreeIter parent;

  store = gtk_tree_store_new (1, G_TYPE_STRING);

  gtk_tree_store_insert_with_values (store, &parent, NULL, 0,

				     0, "Applications", -1);

  gtk_tree_store_insert_with_values (store, &iter, &parent, 0,

				     0, "File Manager", -1);

  gtk_tree_store_insert_with_values (store, &iter, &parent, 0,

				     0, "Gossip", -1);

  gtk_tree_store_insert_with_values (store, &iter, &parent, 0,

				     0, "System Settings", -1);

  gtk_tree_store_insert_with_values (store, &iter, &parent, 0,

				     0, "The GIMP", -1);

  gtk_tree_store_insert_with_values (store, &iter, &parent, 0,

				     0, "Terminal", -1);

  gtk_tree_store_insert_with_values (store, &iter, &parent, 0,

				     0, "Word Processor", -1);

  gtk_tree_store_insert_with_values (store, &parent, NULL, 1,

				     0, "Documents", -1);

  gtk_tree_store_insert_with_values (store, &iter, &parent, 0,

				     0, "blaat.txt", -1);

  gtk_tree_store_insert_with_values (store, &iter, &parent, 0,

				     0, "sliff.txt", -1);

  gtk_tree_store_insert_with_values (store, &iter, &parent, 0,

				     0, "test.txt", -1);

  gtk_tree_store_insert_with_values (store, &iter, &parent, 0,

				     0, "blaat.txt", -1);

  gtk_tree_store_insert_with_values (store, &iter, &parent, 0,

				     0, "brrrr.txt", -1);

  gtk_tree_store_insert_with_values (store, &iter, &parent, 0,

				     0, "hohoho.txt", -1);

  gtk_tree_store_insert_with_values (store, &parent, NULL, 2,

				     0, "Images", -1);

  gtk_tree_store_insert_with_values (store, &iter, &parent, 0,

				     0, "image1.png", -1);

  gtk_tree_store_insert_with_values (store, &iter, &parent, 0,

				     0, "image2.png", -1);

  gtk_tree_store_insert_with_values (store, &iter, &parent, 0,

				     0, "image3.jpg", -1);

  return GTK_TREE_MODEL (store);

}

static void

set_color_func (GtkTreeViewColumn *column,

		GtkCellRenderer   *cell,

		GtkTreeModel      *model,

		GtkTreeIter       *iter,

		gpointer           data)

{

  if (gtk_tree_model_iter_has_child (model, iter))

    g_object_set (cell, "cell-background", "Grey", NULL);

  else

    g_object_set (cell, "cell-background", NULL, NULL);

}

static void

tree_view_row_activated (GtkTreeView       *tree_view,

			 GtkTreePath       *path,

			 GtkTreeViewColumn *column)

{

  if (gtk_tree_path_get_depth (path) > 1)

    return;

  if (gtk_tree_view_row_expanded (GTK_TREE_VIEW (tree_view), path))

    gtk_tree_view_collapse_row (GTK_TREE_VIEW (tree_view), path);

  else

    gtk_tree_view_expand_row (GTK_TREE_VIEW (tree_view), path, FALSE);

}

static gboolean

tree_view_select_func (GtkTreeSelection *selection,

		       GtkTreeModel     *model,

		       GtkTreePath      *path,

		       gboolean          path_currently_selected,

		       gpointer          data)

{

  if (gtk_tree_path_get_depth (path) > 1)

    return TRUE;

  return FALSE;

}

int

main (int argc, char **argv)

{

  GtkWidget *window, *sw, *tv;

  GtkTreeModel *model;

  GtkCellRenderer *renderer;

  GtkTreeViewColumn *column;

  gtk_init (&argc, &argv);

  model = create_model ();

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);

  g_signal_connect (window, "delete_event",

		    G_CALLBACK (gtk_main_quit), NULL);

  gtk_window_set_default_size (GTK_WINDOW (window), 320, 480);

  sw = gtk_scrolled_window_new (NULL, NULL);

  gtk_container_add (GTK_CONTAINER (window), sw);

  tv = gtk_tree_view_new_with_model (model);

  gtk_container_add (GTK_CONTAINER (sw), tv);

  g_signal_connect (tv, "row-activated",

		    G_CALLBACK (tree_view_row_activated), tv);

  g_object_set (tv,

		"show-expanders", FALSE,

		"level-indentation", 10,

		NULL);

  gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tv), FALSE);

  gtk_tree_view_expand_all (GTK_TREE_VIEW (tv));

  gtk_tree_selection_set_select_function (gtk_tree_view_get_selection (GTK_TREE_VIEW (tv)),

					  tree_view_select_func,

					  NULL,

					  NULL);

  renderer = gtk_cell_renderer_text_new ();

  column = gtk_tree_view_column_new_with_attributes ("(none)",

						     renderer,

						     "text", 0,

						     NULL);

  gtk_tree_view_column_set_cell_data_func (column,

					   renderer,

					   set_color_func,

					   NULL,

					   NULL);

  gtk_tree_view_insert_column (GTK_TREE_VIEW (tv), column, 0);

  gtk_widget_show_all (window);

  gtk_main ();

  return 0;

}