Add gtk_combo_box_get_active_text() convenience function. (#136372,

Wed May  5 23:42:42 2004  Matthias Clasen  <maclas@gmx.de>

	* gtk/gtkcombobox.h:
	* gtk/gtkcombobox.c (gtk_combo_box_get_active_text):
	Add gtk_combo_box_get_active_text() convenience
	function. (#136372, Christian Neumeir, patch by Olivier Andrieu)

ChangeLog

@@ -1,3 +1,10 @@
+Wed May  5 23:42:42 2004  Matthias Clasen  <maclas@gmx.de>
+
+	* gtk/gtkcombobox.h: 
+	* gtk/gtkcombobox.c (gtk_combo_box_get_active_text): 
+	Add gtk_combo_box_get_active_text() convenience 
+	function. (#136372, Christian Neumeir, patch by Olivier Andrieu) 
+
 2004-05-05  Elijah Newren  <newren@math.utah.edu>
 
 	Changes to support do-not-focus-on-map hint in conjunction with

ChangeLog.pre-2-10

@@ -1,3 +1,10 @@
+Wed May  5 23:42:42 2004  Matthias Clasen  <maclas@gmx.de>
+
+	* gtk/gtkcombobox.h: 
+	* gtk/gtkcombobox.c (gtk_combo_box_get_active_text): 
+	Add gtk_combo_box_get_active_text() convenience 
+	function. (#136372, Christian Neumeir, patch by Olivier Andrieu) 
+
 2004-05-05  Elijah Newren  <newren@math.utah.edu>
 
 	Changes to support do-not-focus-on-map hint in conjunction with

ChangeLog.pre-2-6

@@ -1,3 +1,10 @@
+Wed May  5 23:42:42 2004  Matthias Clasen  <maclas@gmx.de>
+
+	* gtk/gtkcombobox.h: 
+	* gtk/gtkcombobox.c (gtk_combo_box_get_active_text): 
+	Add gtk_combo_box_get_active_text() convenience 
+	function. (#136372, Christian Neumeir, patch by Olivier Andrieu) 
+
 2004-05-05  Elijah Newren  <newren@math.utah.edu>
 
 	Changes to support do-not-focus-on-map hint in conjunction with

ChangeLog.pre-2-8

@@ -1,3 +1,10 @@
+Wed May  5 23:42:42 2004  Matthias Clasen  <maclas@gmx.de>
+
+	* gtk/gtkcombobox.h: 
+	* gtk/gtkcombobox.c (gtk_combo_box_get_active_text): 
+	Add gtk_combo_box_get_active_text() convenience 
+	function. (#136372, Christian Neumeir, patch by Olivier Andrieu) 
+
 2004-05-05  Elijah Newren  <newren@math.utah.edu>
 
 	Changes to support do-not-focus-on-map hint in conjunction with

docs/reference/ChangeLog

@@ -1,3 +1,7 @@
+Wed May  5 23:46:19 2004  Matthias Clasen  <maclas@gmx.de>
+
+	* gtk/gtk-sections.txt: Add gtk_combo_box_get_active_text().
+
 Wed May  5 23:12:36 2004  Matthias Clasen  <maclas@gmx.de>
 
 	* gdk-pixbuf/gdk-pixbuf-sections.txt: Add 

docs/reference/gtk/gtk-sections.txt

@@ -685,6 +685,7 @@ gtk_combo_box_append_text
 gtk_combo_box_insert_text
 gtk_combo_box_prepend_text
 gtk_combo_box_remove_text
+gtk_combo_box_get_active_text
 gtk_combo_box_popup
 gtk_combo_box_popdown
 <SUBSECTION Standard>

gtk/gtkcombobox.c

@@ -100,6 +100,10 @@ struct _GtkComboBoxPrivate
   gint width;
   GSList *cells;
 
+  GtkComboBoxSelectionFunc selection_func;
+  gpointer selection_data;
+  GDestroyNotify selection_destroy;
+
   guint popup_in_progress : 1;
   guint destroying : 1;
 };
@@ -254,6 +258,8 @@ static void     gtk_combo_box_set_active_internal  (GtkComboBox      *combo_box,
 static gboolean gtk_combo_box_key_press            (GtkWidget        *widget,
 						    GdkEventKey      *event,
 						    gpointer          data);
+static void     cell_view_sync_cells               (GtkComboBox      *combo_box,
+						    GtkCellView      *cell_view);
 
 /* listening to the model */
 static void     gtk_combo_box_model_row_inserted   (GtkTreeModel     *model,
@@ -1089,6 +1095,40 @@ gtk_combo_box_list_position (GtkComboBox *combo_box,
     *y -= *height;
 } 
 
+static void
+update_menu_sensitivity (GtkComboBox *combo_box)
+{
+  gint i, items;
+  GtkWidget *menu;
+  GList *children;
+
+  if (!combo_box->priv->model  || !combo_box->priv->selection_func)
+    return;
+
+  items = gtk_tree_model_iter_n_children (combo_box->priv->model, NULL);
+  menu = combo_box->priv->popup_widget;
+
+  children = gtk_container_get_children (GTK_CONTAINER (menu));
+  for (i = 0; i < items; i++, children = children->next)
+    {
+      GtkTreePath *path;
+      GtkWidget *item;
+      gboolean sensitive;
+
+      path = gtk_tree_path_new_from_indices (i, -1);
+      item = GTK_WIDGET (children->data);
+      
+      sensitive = (*combo_box->priv->selection_func) (combo_box->priv->model,
+						      path, 
+						      i == combo_box->priv->active_item,
+						      combo_box->priv->selection_data);
+
+      gtk_widget_set_sensitive (item, sensitive);
+
+      gtk_tree_path_free (path);
+    }
+}
+
 /**
  * gtk_combo_box_popup:
  * @combo_box: a #GtkComboBox
@@ -1112,6 +1152,8 @@ gtk_combo_box_popup (GtkComboBox *combo_box)
 
   if (GTK_IS_MENU (combo_box->priv->popup_widget))
     {
+      update_menu_sensitivity (combo_box);
+
       gtk_menu_set_active (GTK_MENU (combo_box->priv->popup_widget),
 			   combo_box->priv->active_item);
 
@@ -1886,7 +1928,9 @@ gtk_combo_box_menu_button_press (GtkWidget      *widget,
   if (event->type == GDK_BUTTON_PRESS && event->button == 1)
     {
       combo_box->priv->popup_in_progress = TRUE;
-      
+
+      update_menu_sensitivity (combo_box);
+
       gtk_menu_set_active (GTK_MENU (combo_box->priv->popup_widget),
 			   combo_box->priv->active_item);
 
@@ -2114,6 +2158,24 @@ gtk_combo_box_menu_row_changed (GtkTreeModel *model,
  * list style
  */
 
+static gboolean
+gtk_combo_box_selection_func (GtkTreeSelection *selection,
+			      GtkTreeModel     *model,
+			      GtkTreePath      *path,
+			      gboolean          currently_selected,
+			      gpointer          data)
+{
+  GtkComboBox *combo_box = GTK_COMBO_BOX (data);
+  
+  if (combo_box->priv->selection_func)
+    return (*combo_box->priv->selection_func) (model,
+					       path, 
+					       currently_selected,
+					       combo_box->priv->selection_data);
+
+  return TRUE;
+}
+
 static void
 gtk_combo_box_list_setup (GtkComboBox *combo_box)
 {
@@ -2186,6 +2248,11 @@ gtk_combo_box_list_setup (GtkComboBox *combo_box)
         gtk_tree_view_column_pack_end (combo_box->priv->column,
                                        info->cell, info->expand);
 
+      if (info->func) 
+	gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (combo_box->priv->column), 
+					    info->cell, info->func, 
+					    info->func_data, NULL);
+
       for (j = info->attributes; j; j = j->next->next)
         {
           gtk_tree_view_column_add_attribute (combo_box->priv->column,
@@ -2208,6 +2275,11 @@ gtk_combo_box_list_setup (GtkComboBox *combo_box)
         }
     }
 
+  gtk_tree_selection_set_select_function (gtk_tree_view_get_selection (GTK_TREE_VIEW (combo_box->priv->tree_view)),
+					  gtk_combo_box_selection_func,
+					  combo_box,
+					  NULL);
+
   /* set sample/popup widgets */
   gtk_combo_box_set_popup_widget (combo_box, combo_box->priv->tree_view);
 
@@ -2352,6 +2424,26 @@ gtk_combo_box_list_button_released (GtkWidget      *widget,
   return TRUE;
 }
 
+static gboolean
+is_selectable (GtkComboBox *combo_box,
+	       gint         index)
+{
+  GtkTreePath *path;
+  gboolean result = TRUE;
+
+  path = gtk_tree_path_new_from_indices (index, -1);
+
+  if (combo_box->priv->selection_func)
+    result = (*combo_box->priv->selection_func) (combo_box->priv->model,
+						 path, 
+						 FALSE,
+						 combo_box->priv->selection_data);
+
+  gtk_tree_path_free (path);
+
+  return result;
+}
+
 static gboolean
 gtk_combo_box_key_press (GtkWidget   *widget,
 			 GdkEventKey *event,
@@ -2376,22 +2468,34 @@ gtk_combo_box_key_press (GtkWidget   *widget,
     case GDK_Down:
     case GDK_KP_Down:
       new_index = index + 1;
+      while (new_index < items && !is_selectable (combo_box, new_index))
+	new_index++;
+      if (new_index == items)
+	new_index = index;
       break;
     case GDK_Up:
     case GDK_KP_Up:
       new_index = index - 1;
+      while (new_index >= 0 && !is_selectable (combo_box, new_index))
+	new_index--;
+      if (new_index < 0)
+	new_index = index;
       break;
     case GDK_Page_Up:
     case GDK_KP_Page_Up:
     case GDK_Home: 
     case GDK_KP_Home:
       new_index = 0;
+      while (new_index < items - 1 && !is_selectable (combo_box, new_index))
+	new_index++;
       break;
     case GDK_Page_Down:
     case GDK_KP_Page_Down:
     case GDK_End: 
     case GDK_KP_End:
       new_index = items - 1;
+      while (new_index > 0 && !is_selectable (combo_box, new_index))
+	new_index--;
       break;
     default:
       return FALSE;
@@ -2737,7 +2841,7 @@ gtk_combo_box_cell_layout_set_cell_data_func (GtkCellLayout         *layout,
 
   if (combo_box->priv->column)
     gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (combo_box->priv->column), cell, func, func_data, NULL);
-
+  
   menu = combo_box->priv->popup_widget;
   if (GTK_IS_MENU (menu))
     {
@@ -3394,6 +3498,33 @@ gtk_combo_box_remove_text (GtkComboBox *combo_box,
     gtk_list_store_remove (store, &iter);
 }
 
+/**
+ * gtk_combo_box_get_active_text:
+ * @combo_box: A #GtkComboBox constructed with gtk_combo_box_new_text().
+ *
+ * Returns the currently active string in @combo_box or %NULL if none
+ * is selected.  Note that you can only use this function with combo
+ * boxes constructed with gtk_combo_box_new_text().
+ *
+ * Returns: a newly allocated string containing the currently active text.
+ *
+ * Since: 2.6
+ */
+gchar *
+gtk_combo_box_get_active_text (GtkComboBox *combo_box)
+{
+  GtkTreeIter iter;
+  gchar *text = NULL;
+
+  g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
+  g_return_if_fail (GTK_IS_LIST_STORE (combo_box->priv->model));
+
+  if (gtk_combo_box_get_active_iter (combo_box, &iter))
+    gtk_tree_model_get (combo_box->priv->model, &iter, 
+			0, &text, -1);
+
+  return text;
+}
 
 static gboolean
 gtk_combo_box_mnemonic_activate (GtkWidget *widget,
@@ -3462,3 +3593,19 @@ gtk_combo_box_finalize (GObject *object)
 
    G_OBJECT_CLASS (parent_class)->finalize (object);
 }
+
+void
+gtk_combo_box_set_selection_func (GtkComboBox              *combo_box,
+				  GtkComboBoxSelectionFunc  func,
+				  gpointer                  func_data,
+				  GDestroyNotify            destroy)
+{
+  g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
+
+  if (combo_box->priv->selection_destroy)
+    combo_box->priv->selection_destroy (combo_box->priv->selection_data);
+
+  combo_box->priv->selection_func = func;
+  combo_box->priv->selection_data = func_data;
+  combo_box->priv->selection_destroy = destroy;
+}

gtk/gtkcombobox.h

@@ -98,11 +98,23 @@ void          gtk_combo_box_prepend_text     (GtkComboBox     *combo_box,
                                               const gchar     *text);
 void          gtk_combo_box_remove_text      (GtkComboBox     *combo_box,
                                               gint             position);
+gchar        *gtk_combo_box_get_active_text  (GtkComboBox     *combo_box);
 
 /* programmatic control */
 void          gtk_combo_box_popup            (GtkComboBox     *combo_box);
 void          gtk_combo_box_popdown          (GtkComboBox     *combo_box);
 
+/* insensitive items */
+typedef gboolean (*GtkComboBoxSelectionFunc) (GtkTreeModel *model,
+					      GtkTreePath  *path,
+					      gboolean      currently_selected,
+					      gpointer      data);
+
+void gtk_combo_box_set_selection_func (GtkComboBox             *combo_box,
+				       GtkComboBoxSelectionFunc func,
+				       gpointer                 data,
+				       GtkDestroyNotify         destroy);
+
 G_END_DECLS
 
 #endif /* __GTK_COMBO_BOX_H__ */