[gimp] Don't lose the active item when reordering between containers of a tree

[Michael Natterer <mitch src gnome org>]

commit ff3ca8eee3242a0112725c0ae99410cb0bd0c4ce
Author: Michael Natterer <mitch gimp org>
Date:   Wed Sep 16 20:00:48 2009 +0200

    Don't lose the active item when reordering between containers of a tree
    
    Implement GimpContainerView::insert_item_after() and select the newly
    inserted item if it is the active item in the image.

 app/widgets/gimpitemtreeview.c |   33 +++++++++++++++++++++++++++------
 1 files changed, 27 insertions(+), 6 deletions(-)
---
diff --git a/app/widgets/gimpitemtreeview.c b/app/widgets/gimpitemtreeview.c
index 060c503..da7d8da 100644
--- a/app/widgets/gimpitemtreeview.c
+++ b/app/widgets/gimpitemtreeview.c
@@ -121,6 +121,9 @@ static gpointer gimp_item_tree_view_insert_item     (GimpContainerView *view,
                                                      GimpViewable      *viewable,
                                                      gpointer           parent_insert_data,
                                                      gint               index);
+static void   gimp_item_tree_view_insert_item_after (GimpContainerView *view,
+                                                     GimpViewable      *viewable,
+                                                     gpointer           insert_data);
 static gboolean gimp_item_tree_view_select_item     (GimpContainerView *view,
                                                      GimpViewable      *item,
                                                      gpointer           insert_data);
@@ -275,12 +278,13 @@ gimp_item_tree_view_view_iface_init (GimpContainerViewInterface *iface)
 {
   parent_view_iface = g_type_interface_peek_parent (iface);
 
-  iface->set_container = gimp_item_tree_view_set_container;
-  iface->set_context   = gimp_item_tree_view_set_context;
-  iface->insert_item   = gimp_item_tree_view_insert_item;
-  iface->select_item   = gimp_item_tree_view_select_item;
-  iface->activate_item = gimp_item_tree_view_activate_item;
-  iface->context_item  = gimp_item_tree_view_context_item;
+  iface->set_container     = gimp_item_tree_view_set_container;
+  iface->set_context       = gimp_item_tree_view_set_context;
+  iface->insert_item       = gimp_item_tree_view_insert_item;
+  iface->insert_item_after = gimp_item_tree_view_insert_item_after;
+  iface->select_item       = gimp_item_tree_view_select_item;
+  iface->activate_item     = gimp_item_tree_view_activate_item;
+  iface->context_item      = gimp_item_tree_view_context_item;
 }
 
 static void
@@ -931,6 +935,23 @@ gimp_item_tree_view_insert_item (GimpContainerView *view,
   return iter;
 }
 
+static void
+gimp_item_tree_view_insert_item_after (GimpContainerView *view,
+                                       GimpViewable      *viewable,
+                                       gpointer           insert_data)
+{
+  GimpItemTreeView      *item_view = GIMP_ITEM_TREE_VIEW (view);
+  GimpItemTreeViewClass *item_view_class;
+  GimpItem              *active_item;
+
+  item_view_class = GIMP_ITEM_TREE_VIEW_GET_CLASS (item_view);
+
+  active_item = item_view_class->get_active_item (item_view->priv->image);
+
+  if (active_item == (GimpItem *) viewable)
+    gimp_container_view_select_item (view, viewable);
+}
+
 static gboolean
 gimp_item_tree_view_select_item (GimpContainerView *view,
                                  GimpViewable      *item,