[nautilus] Adds key binding for expanding and collapsing folders in list view

[Marcus Carlson <mdc src gnome org>]

commit 8ef7a9a1a1bdd02926b8b1fe59a6e97cf6c69574
Author: Marcus Carlson <mdc src gnome org>
Date:   Sat Jul 10 00:14:00 2010 +0200

    Adds key binding for expanding and collapsing folders in list view
    
    https://bugzilla.gnome.org/show_bug.cgi?id=504869

 src/file-manager/fm-list-view.c |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)
---
diff --git a/src/file-manager/fm-list-view.c b/src/file-manager/fm-list-view.c
index a0f5d5b..724461e 100644
--- a/src/file-manager/fm-list-view.c
+++ b/src/file-manager/fm-list-view.c
@@ -982,6 +982,10 @@ key_press_callback (GtkWidget *widget, GdkEventKey *event, gpointer callback_dat
 	FMDirectoryView *view;
 	GdkEventButton button_event = { 0 };
 	gboolean handled;
+	GtkTreeView *tree_view;
+	GtkTreePath *path;
+
+	tree_view = GTK_TREE_VIEW (widget);
 
 	view = FM_DIRECTORY_VIEW (callback_data);
 	handled = FALSE;
@@ -993,6 +997,22 @@ key_press_callback (GtkWidget *widget, GdkEventKey *event, gpointer callback_dat
 			handled = TRUE;
 		}
 		break;
+	case GDK_Right:
+		gtk_tree_view_get_cursor (tree_view, &path, NULL);
+		if (path) {
+			gtk_tree_view_expand_row (tree_view, path, FALSE);
+			gtk_tree_path_free (path);
+		}
+		handled = TRUE;
+		break;
+	case GDK_Left:
+		gtk_tree_view_get_cursor (tree_view, &path, NULL);
+		if (path) {
+			gtk_tree_view_collapse_row (tree_view, path);
+			gtk_tree_path_free (path);
+		}
+		handled = TRUE;
+		break;
 	case GDK_space:
 		if (event->state & GDK_CONTROL_MASK) {
 			handled = FALSE;