indexing
	description: "."
	copyright: "[
					Copyright (C) 2006 Paolo Redaelli, GTK+ team
					
					This library is free software; you can redistribute it and/or
					modify it under the terms of the GNU Lesser General Public License
					as published by the Free Software Foundation; either version 2.1 of
					the License, or (at your option) any later version.
					
					This library 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
					Lesser General Public License for more details.

					You should have received a copy of the GNU Lesser General Public
					License along with this library; if not, write to the Free Software
					Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
					02110-1301 USA
			]"

class COMBOBOX

creation make

feature
-- /* Combo boxes 
--  *
--  * The ComboBox widget allows to select one option out of a list.
--  * The ComboBoxEntry additionally allows the user to enter a value
--  * that is not in the list of options. 
--  *
--  * How the options are displayed is controlled by cell renderers.
--  */

-- #include <gtk/gtk.h>

-- enum 
-- {
--   PIXBUF_COL,
--   TEXT_COL
-- };

-- static gchar *
-- strip_underscore (const gchar *text)
-- {
--   gchar *p, *q;
--   gchar *result;
  
--   result = g_strdup (text);
--   p = q = result;
--   while (*p) 
--     {
--       if (*p != '_')
-- 	{
-- 	  *q = *p;
-- 	  q++;
-- 	}
--       p++;
--     }
--   *q = '\0';

--   return result;
-- }

-- static GtkTreeModel *
-- create_stock_icon_store (void)
-- {
--   gchar *stock_id[6] = {
--     GTK_STOCK_DIALOG_WARNING,
--     GTK_STOCK_STOP,
--     GTK_STOCK_NEW,
--     GTK_STOCK_CLEAR,
--     NULL,
--     GTK_STOCK_OPEN    
--   };

--   GtkStockItem item;
--   GdkPixbuf *pixbuf;
--   GtkWidget *cellview;
--   GtkTreeIter iter;
--   GtkListStore *store;
--   gchar *label;
--   gint i;

--   cellview = gtk_cell_view_new ();
  
--   store = gtk_list_store_new (2, GDK_TYPE_PIXBUF, G_TYPE_STRING);

--   for (i = 0; i < G_N_ELEMENTS (stock_id); i++)
--     {
--       if (stock_id[i])
-- 	{
-- 	  pixbuf = gtk_widget_render_icon (cellview, stock_id[i],
-- 					   GTK_ICON_SIZE_BUTTON, NULL);
-- 	  gtk_stock_lookup (stock_id[i], &item);
-- 	  label = strip_underscore (item.label);
-- 	  gtk_list_store_append (store, &iter);
-- 	  gtk_list_store_set (store, &iter,
-- 			      PIXBUF_COL, pixbuf,
-- 			      TEXT_COL, label,
-- 			      -1);
-- 	  g_free (label);
-- 	}
--       else
-- 	{
-- 	  gtk_list_store_append (store, &iter);
-- 	  gtk_list_store_set (store, &iter,
-- 			      PIXBUF_COL, NULL,
-- 			      TEXT_COL, "separator",
-- 			      -1);
-- 	}
--     }

--   gtk_widget_destroy (cellview);
  
--   return GTK_TREE_MODEL (store);
-- }

-- /* A GtkCellLayoutDataFunc that demonstrates how one can control
--  * sensitivity of rows. This particular function does nothing 
--  * useful and just makes the second row insensitive.
--  */
-- static void
-- set_sensitive (GtkCellLayout   *cell_layout,
-- 	       GtkCellRenderer *cell,
-- 	       GtkTreeModel    *tree_model,
-- 	       GtkTreeIter     *iter,
-- 	       gpointer         data)
-- {
--   GtkTreePath *path;
--   gint *indices;
--   gboolean sensitive;

--   path = gtk_tree_model_get_path (tree_model, iter);
--   indices = gtk_tree_path_get_indices (path);
--   sensitive = indices[0] != 1;
--   gtk_tree_path_free (path);

--   g_object_set (cell, "sensitive", sensitive, NULL);
-- }

-- /* A GtkTreeViewRowSeparatorFunc that demonstrates how rows can be
--  * rendered as separators. This particular function does nothing 
--  * useful and just turns the fourth row into a separator.
--  */
-- static gboolean
-- is_separator (GtkTreeModel *model,
-- 	      GtkTreeIter  *iter,
-- 	      gpointer      data)
-- {
--   GtkTreePath *path;
--   gboolean result;

--   path = gtk_tree_model_get_path (model, iter);
--   result = gtk_tree_path_get_indices (path)[0] == 4;
--   gtk_tree_path_free (path);

--   return result;
-- }

-- static GtkTreeModel *
-- create_capital_store (void)
-- {
--   struct {
--     gchar *group;
--     gchar *capital;
--   } capitals[] = {
--     { "A - B", NULL }, 
--     { NULL, "Albany" },
--     { NULL, "Annapolis" },
--     { NULL, "Atlanta" },
--     { NULL, "Augusta" }, 
--     { NULL, "Austin" },
--     { NULL, "Baton Rouge" },
--     { NULL, "Bismarck" },
--     { NULL, "Boise" },
--     { NULL, "Boston" },
--     { "C - D", NULL },
--     { NULL, "Carson City" },
--     { NULL, "Charleston" },
--     { NULL, "Cheyenne" },
--     { NULL, "Columbia" },
--     { NULL, "Columbus" },
--     { NULL, "Concord" },
--     { NULL, "Denver" },
--     { NULL, "Des Moines" },
--     { NULL, "Dover" },
--     { "E - J", NULL },
--     { NULL, "Frankfort" },
--     { NULL, "Harrisburg" },
--     { NULL, "Hartford" },
--     { NULL, "Helena" },
--     { NULL, "Honolulu" },
--     { NULL, "Indianapolis" },
--     { NULL, "Jackson" },
--     { NULL, "Jefferson City" },
--     { NULL, "Juneau" },
--     { "K - O" },
--     { NULL, "Lansing" },
--     { NULL, "Lincoln" },
--     { NULL, "Little Rock" },
--     { NULL, "Madison" },
--     { NULL, "Montgomery" },
--     { NULL, "Montpelier" },
--     { NULL, "Nashville" },
--     { NULL, "Oklahoma City" },
--     { NULL, "Olympia" },
--     { NULL, "P - S" },
--     { NULL, "Phoenix" },
--     { NULL, "Pierre" },
--     { NULL, "Providence" },
--     { NULL, "Raleigh" },
--     { NULL, "Richmond" },
--     { NULL, "Sacramento" },
--     { NULL, "Salem" },
--     { NULL, "Salt Lake City" },
--     { NULL, "Santa Fe" },
--     { NULL, "Springfield" },
--     { NULL, "St. Paul" },
--     { "T - Z", NULL },
--     { NULL, "Tallahassee" },
--     { NULL, "Topeka" },
--     { NULL, "Trenton" },
--     { NULL, NULL }
--   };
  
--   GtkTreeIter iter, iter2;
--   GtkTreeStore *store;
--   gint i;

--   store = gtk_tree_store_new (1, G_TYPE_STRING);
  
--   for (i = 0; capitals[i].group || capitals[i].capital; i++)
--     {
--       if (capitals[i].group)
-- 	{
-- 	  gtk_tree_store_append (store, &iter, NULL);
-- 	  gtk_tree_store_set (store, &iter, 0, capitals[i].group, -1);
-- 	}
--       else if (capitals[i].capital)
-- 	{
-- 	  gtk_tree_store_append (store, &iter2, &iter);
-- 	  gtk_tree_store_set (store, &iter2, 0, capitals[i].capital, -1);
-- 	}
--     }
  
--   return GTK_TREE_MODEL (store);
-- }

-- static void
-- is_capital_sensitive (GtkCellLayout   *cell_layout,
-- 		      GtkCellRenderer *cell,
-- 		      GtkTreeModel    *tree_model,
-- 		      GtkTreeIter     *iter,
-- 		      gpointer         data)
-- {
--   gboolean sensitive;

--   sensitive = !gtk_tree_model_iter_has_child (tree_model, iter);

--   g_object_set (cell, "sensitive", sensitive, NULL);
-- }

-- static void
-- fill_combo_entry (GtkWidget *entry)
-- {
--   gtk_combo_box_append_text (GTK_COMBO_BOX (entry), "One");
--   gtk_combo_box_append_text (GTK_COMBO_BOX (entry), "Two");
--   gtk_combo_box_append_text (GTK_COMBO_BOX (entry), "2\302\275");
--   gtk_combo_box_append_text (GTK_COMBO_BOX (entry), "Three");
-- }

-- GtkWidget *
-- do_combobox (GtkWidget *do_widget)
-- {
--   static GtkWidget *window = NULL;
--   GtkWidget *vbox, *frame, *box, *combo;
--   GtkTreeModel *model;
--   GtkCellRenderer *renderer;
--   GtkTreePath *path;
--   GtkTreeIter iter;

--   if (!window)
--   {
--     window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
--     gtk_window_set_screen (GTK_WINDOW (window),
--                            gtk_widget_get_screen (do_widget));
--     gtk_window_set_title (GTK_WINDOW (window), "Combo boxes");
	
--     g_signal_connect (window, "destroy",
--                       G_CALLBACK (gtk_widget_destroyed),
--                       &window);
	
--     gtk_container_set_border_width (GTK_CONTAINER (window), 10);

--     vbox = gtk_vbox_new (FALSE, 2);
--     gtk_container_add (GTK_CONTAINER (window), vbox);

--     /* A combobox demonstrating cell renderers, separators and
--      *  insensitive rows 
--      */
--     frame = gtk_frame_new ("Some stock icons");
--     gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
	
--     box = gtk_vbox_new (FALSE, 0);
--     gtk_container_set_border_width (GTK_CONTAINER (box), 5);
--     gtk_container_add (GTK_CONTAINER (frame), box);
	
--     model = create_stock_icon_store ();
--     combo = gtk_combo_box_new_with_model (model);
--     g_object_unref (model);
--     gtk_container_add (GTK_CONTAINER (box), combo);
	
--     renderer = gtk_cell_renderer_pixbuf_new ();
--     gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo), renderer, FALSE);
--     gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo), renderer,
-- 				    "pixbuf", PIXBUF_COL, 
-- 				    NULL);

--     gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (combo),
-- 					renderer,
-- 					set_sensitive,
-- 					NULL, NULL);
	
--     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", TEXT_COL,
-- 				    NULL);

--     gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (combo),
-- 					renderer,
-- 					set_sensitive,
-- 					NULL, NULL);

--     gtk_combo_box_set_row_separator_func (GTK_COMBO_BOX (combo), 
-- 					  is_separator, NULL, NULL);
	
--     gtk_combo_box_set_active (GTK_COMBO_BOX (combo), 0);
	
--     /* A combobox demonstrating trees.
--      */
--     frame = gtk_frame_new ("Where are we ?");
--     gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);

--     box = gtk_vbox_new (FALSE, 0);
--     gtk_container_set_border_width (GTK_CONTAINER (box), 5);
--     gtk_container_add (GTK_CONTAINER (frame), box);
	
--     model = create_capital_store ();
--     combo = gtk_combo_box_new_with_model (model);
--     g_object_unref (model);
--     gtk_container_add (GTK_CONTAINER (box), combo);

--     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", 0,
-- 				    NULL);
--     gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (combo),
-- 					renderer,
-- 					is_capital_sensitive,
-- 					NULL, NULL);

--     path = gtk_tree_path_new_from_indices (0, 8, -1);
--     gtk_tree_model_get_iter (model, &iter, path);
--     gtk_tree_path_free (path);
--     gtk_combo_box_set_active_iter (GTK_COMBO_BOX (combo), &iter);

--     /* A GtkComboBoxEntry 
--      */
--     frame = gtk_frame_new ("Editable");
--     gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
	
--     box = gtk_vbox_new (FALSE, 0);
--     gtk_container_set_border_width (GTK_CONTAINER (box), 5);
--     gtk_container_add (GTK_CONTAINER (frame), box);
	
--     combo = gtk_combo_box_entry_new_text ();
--     fill_combo_entry (combo);
--     gtk_container_add (GTK_CONTAINER (box), combo);
	
--   }

--   if (!GTK_WIDGET_VISIBLE (window))
--     {
--       gtk_widget_show_all (window);
--     }
--   else
--     {    
--       gtk_widget_destroy (window);
--       window = NULL;
--     }

--   return window;
-- }
end