[gtk+/gtk-2-16] Add a tooltip to the save folder combo

[Matthias Clasen <matthiasc src gnome org>]

commit 7e602acc8d96421fa528f5a12102faa6db6e2825
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Jul 15 19:17:36 2009 -0400

    Add a tooltip to the save folder combo
    
    Add a tooltip that shows the full path of the current folder, to avoid
    ambiguity. We only show the tooltip when the expander is collapsed to
    avoid cluttering the full file chooser.

 gtk/gtkfilechooserdefault.c |   36 ++++++++++++++++++++++++++++++++++++
 1 files changed, 36 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkfilechooserdefault.c b/gtk/gtkfilechooserdefault.c
index ffbabfb..4064cff 100644
--- a/gtk/gtkfilechooserdefault.c
+++ b/gtk/gtkfilechooserdefault.c
@@ -4775,6 +4775,38 @@ save_folder_combo_changed_cb (GtkComboBox           *combo,
     }
 }
 
+static void
+save_folder_update_tooltip (GtkComboBox           *combo,
+			    GtkFileChooserDefault *impl)
+{
+  GtkTreeIter iter;
+  gchar *tooltip;
+
+  tooltip = NULL;
+
+  if (gtk_combo_box_get_active_iter (combo, &iter))
+    {
+      GtkTreeIter child_iter;
+      gpointer col_data;
+      ShortcutType shortcut_type;
+
+      gtk_tree_model_filter_convert_iter_to_child_iter (GTK_TREE_MODEL_FILTER (impl->shortcuts_combo_filter_model),
+                                                        &child_iter,
+                                                        &iter);
+      gtk_tree_model_get (GTK_TREE_MODEL (impl->shortcuts_model), &child_iter,
+                          SHORTCUTS_COL_DATA, &col_data,
+                          SHORTCUTS_COL_TYPE, &shortcut_type,
+                          -1);
+
+      if (shortcut_type == SHORTCUT_TYPE_FILE)
+        tooltip = g_file_get_parse_name (G_FILE (col_data));
+   }
+
+  gtk_widget_set_tooltip_text (GTK_WIDGET (combo), tooltip);
+  gtk_widget_set_has_tooltip (GTK_WIDGET (combo),
+                              gtk_widget_get_sensitive (GTK_WIDGET (combo)));
+}
+
 /* Filter function used to filter out the Search item and its separator.  
  * Used for the "Save in folder" combo box, so that these items do not appear in it.
  */
@@ -4865,6 +4897,8 @@ save_folder_combo_create (GtkFileChooserDefault *impl)
 
   g_signal_connect (combo, "changed",
 		    G_CALLBACK (save_folder_combo_changed_cb), impl);
+  g_signal_connect (combo, "changed",
+		    G_CALLBACK (save_folder_update_tooltip), impl);
 
   return combo;
 }
@@ -5467,12 +5501,14 @@ update_appearance (GtkFileChooserDefault *impl)
 	{
 	  gtk_widget_set_sensitive (impl->save_folder_label, FALSE);
 	  gtk_widget_set_sensitive (impl->save_folder_combo, FALSE);
+	  gtk_widget_set_has_tooltip (impl->save_folder_combo, FALSE);
 	  gtk_widget_show (impl->browse_widgets);
 	}
       else
 	{
 	  gtk_widget_set_sensitive (impl->save_folder_label, TRUE);
 	  gtk_widget_set_sensitive (impl->save_folder_combo, TRUE);
+	  gtk_widget_set_has_tooltip (impl->save_folder_combo, TRUE);
 	  gtk_widget_hide (impl->browse_widgets);
 	}