r18426 - gnucash/trunk/src - Bug #121695: Support account reparenting through drag and drop in the account tree view

Christian Stimming cstim at code.gnucash.org
Fri Nov 20 14:57:14 EST 2009


Author: cstim
Date: 2009-11-20 14:57:13 -0500 (Fri, 20 Nov 2009)
New Revision: 18426
Trac: http://svn.gnucash.org/trac/changeset/18426

Added:
   gnucash/trunk/src/gnome-utils/gnc-tree-model-account-drag.c
   gnucash/trunk/src/gnome-utils/gnc-tree-model-account-drag.h
Modified:
   gnucash/trunk/src/gnome-utils/Makefile.am
   gnucash/trunk/src/gnome-utils/gnc-tree-view-account.c
   gnucash/trunk/src/gnome/gnc-plugin-page-account-tree.c
Log:
Bug #121695: Support account reparenting through drag and drop in the account tree view

Patch by Matt Lavin:
Here is a patch that implements drag and drop reparenting in the accounts page.
The function works for me, and I can't think of anything more that needs to be
done, but I'm new to the Gnucash codebase so a thorough review would be great.

Modified: gnucash/trunk/src/gnome/gnc-plugin-page-account-tree.c
===================================================================
--- gnucash/trunk/src/gnome/gnc-plugin-page-account-tree.c	2009-11-20 02:10:08 UTC (rev 18425)
+++ gnucash/trunk/src/gnome/gnc-plugin-page-account-tree.c	2009-11-20 19:57:13 UTC (rev 18426)
@@ -407,6 +407,25 @@
   gnc_main_window_close_page(plugin_page);
 }
 
+static const GtkTargetEntry dnd_targets[] = {
+  { "gnc_account", GTK_TARGET_SAME_WIDGET, 0 }
+};
+
+
+static void
+gnc_enable_account_dragging(GtkTreeView *tree_view)
+{
+  GtkTreeModel *model;
+
+  model = gtk_tree_view_get_model (tree_view);
+
+  g_return_if_fail (G_TYPE_CHECK_INSTANCE_TYPE (model, GTK_TYPE_TREE_DRAG_DEST));
+  g_return_if_fail (G_TYPE_CHECK_INSTANCE_TYPE (model, GTK_TYPE_TREE_DRAG_SOURCE));
+
+  gtk_tree_view_enable_model_drag_source(tree_view, GDK_BUTTON1_MASK, dnd_targets, 1, GDK_ACTION_MOVE);
+  gtk_tree_view_enable_model_drag_dest(tree_view, dnd_targets, 1, GDK_ACTION_MOVE);
+}
+
 static GtkWidget *
 gnc_plugin_page_account_tree_create_widget (GncPluginPage *plugin_page)
 {
@@ -466,6 +485,9 @@
 	g_signal_connect (G_OBJECT (tree_view), "row-activated",
 			  G_CALLBACK (gnc_plugin_page_account_tree_double_click_cb), page);
 
+	/* Support dragging accounts for re-ordering/re-parenting */
+	gnc_enable_account_dragging(tree_view);
+
 	gtk_tree_view_set_headers_visible(tree_view, TRUE);
 	gnc_plugin_page_account_tree_selection_changed_cb (NULL, page);
 	gtk_widget_show (GTK_WIDGET (tree_view));

Modified: gnucash/trunk/src/gnome-utils/Makefile.am
===================================================================
--- gnucash/trunk/src/gnome-utils/Makefile.am	2009-11-20 02:10:08 UTC (rev 18425)
+++ gnucash/trunk/src/gnome-utils/Makefile.am	2009-11-20 19:57:13 UTC (rev 18426)
@@ -82,6 +82,7 @@
   gnc-tree-model.c \
   gnc-tree-model-account-types.c \
   gnc-tree-model-account.c \
+  gnc-tree-model-account-drag.c \
   gnc-tree-model-budget.c \
   gnc-tree-model-commodity.c \
   gnc-tree-model-price.c \
@@ -150,6 +151,7 @@
   gnc-tree-model.h \
   gnc-tree-model-account-types.h \
   gnc-tree-model-account.h \
+  gnc-tree-model-account-drag.h \
   gnc-tree-model-budget.h \
   gnc-tree-model-commodity.h \
   gnc-tree-model-price.h \

Added: gnucash/trunk/src/gnome-utils/gnc-tree-model-account-drag.c
===================================================================
--- gnucash/trunk/src/gnome-utils/gnc-tree-model-account-drag.c	                        (rev 0)
+++ gnucash/trunk/src/gnome-utils/gnc-tree-model-account-drag.c	2009-11-20 19:57:13 UTC (rev 18426)
@@ -0,0 +1,732 @@
+/* gnc-tree-model-account-drag.c
+ * Copyright (C) 2009 Matt Lavin <matt.lavin at gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/** @addtogroup GUI
+    @{ */
+/** @addtogroup GuiTreeModel GnuCash Tree Model
+    @{ */
+/** @file gnc-tree-model-account-drag.c
+    @brief GtkTreeModel wrapper that supports dragging Accounts for reparenting
+    @author Matt Lavin <matt.lavin at gmail.com>
+*/
+
+#include "gnc-tree-model-account-drag.h"
+#include "gnc-component-manager.h"
+
+#include <glib/gi18n.h>
+
+/** Static Globals *******************************************************/
+static QofLogModule log_module = GNC_MOD_GUI;
+
+/* general (object/interface init, etc) */
+static void gnc_tree_model_account_drag_tree_model_init       (GtkTreeModelIface     *iface);
+static void gnc_tree_model_account_drag_tree_sortable_init    (GtkTreeSortableIface  *iface);
+static void gnc_tree_model_account_drag_drag_source_init      (GtkTreeDragSourceIface*iface);
+static void gnc_tree_model_account_drag_drag_dest_init        (GtkTreeDragDestIface  *iface);
+static void gnc_tree_model_account_drag_finalize              (GObject               *object);
+
+/* TreeModel signal handlers */
+static void gnc_tree_model_account_drag_row_changed(GtkTreeModel *c_model,
+                                                    GtkTreePath *c_path,
+                                                    GtkTreeIter *c_iter,
+                                                    gpointer data);
+static void gnc_tree_model_account_drag_row_inserted(GtkTreeModel *c_model,
+                                                     GtkTreePath *c_path,
+                                                     GtkTreeIter *c_iter,
+                                                     gpointer data);
+static void gnc_tree_model_account_drag_row_has_child_toggled(GtkTreeModel *c_model,
+                                                              GtkTreePath *c_path,
+                                                              GtkTreeIter *c_iter,
+                                                              gpointer data);
+static void gnc_tree_model_account_drag_row_deleted(GtkTreeModel *c_model,
+                                                    GtkTreePath *c_path,
+                                                    gpointer data);
+static void gnc_tree_model_account_drag_rows_reordered(GtkTreeModel *c_model,
+                                                       GtkTreePath *c_path,
+                                                       GtkTreeIter *c_iter,
+                                                       gint *new_order,
+                                                       gpointer data);
+
+/* TreeModel interface */
+static GtkTreeModelFlags gnc_tree_model_account_drag_get_flags     (GtkTreeModel          *tree_model);
+static gint         gnc_tree_model_account_drag_get_n_columns      (GtkTreeModel          *tree_model);
+static GType        gnc_tree_model_account_drag_get_column_type    (GtkTreeModel          *tree_model,
+								    gint                   index);
+static gboolean     gnc_tree_model_account_drag_get_iter           (GtkTreeModel          *tree_model,
+								    GtkTreeIter           *iter,
+								    GtkTreePath           *path);
+static GtkTreePath *gnc_tree_model_account_drag_get_path           (GtkTreeModel          *tree_model,
+								    GtkTreeIter           *iter);
+static void         gnc_tree_model_account_drag_get_value          (GtkTreeModel          *tree_model,
+								    GtkTreeIter           *iter,
+								    gint                   column,
+								    GValue                *value);
+static gboolean     gnc_tree_model_account_drag_iter_next          (GtkTreeModel          *tree_model,
+								    GtkTreeIter           *iter);
+static gboolean     gnc_tree_model_account_drag_iter_children      (GtkTreeModel          *tree_model,
+								    GtkTreeIter           *iter,
+								    GtkTreeIter           *parent);
+static gboolean     gnc_tree_model_account_drag_iter_has_child     (GtkTreeModel          *tree_model,
+								    GtkTreeIter           *iter);
+static gint         gnc_tree_model_account_drag_iter_n_children    (GtkTreeModel          *tree_model,
+								    GtkTreeIter           *iter);
+static gboolean     gnc_tree_model_account_drag_iter_nth_child     (GtkTreeModel          *tree_model,
+								    GtkTreeIter           *iter,
+								    GtkTreeIter           *parent,
+								    gint                   n);
+static gboolean     gnc_tree_model_account_drag_iter_parent        (GtkTreeModel          *tree_model,
+								    GtkTreeIter           *iter,
+								    GtkTreeIter           *child);
+static void         gnc_tree_model_account_drag_ref_node           (GtkTreeModel          *tree_model,
+								    GtkTreeIter           *iter);
+static void         gnc_tree_model_account_drag_unref_node         (GtkTreeModel          *tree_model,
+								    GtkTreeIter           *iter);
+
+/* TreeDragSource interface */
+static gboolean     gnc_tree_model_account_drag_row_draggable         (GtkTreeDragSource      *drag_source,
+								       GtkTreePath            *path);
+static gboolean     gnc_tree_model_account_drag_drag_data_get         (GtkTreeDragSource      *drag_source,
+								       GtkTreePath            *path,
+								       GtkSelectionData       *selection_data);
+static gboolean     gnc_tree_model_account_drag_drag_data_delete      (GtkTreeDragSource      *drag_source,
+								       GtkTreePath            *path);
+
+/* TreeDragDest interface */
+static  gboolean    gnc_tree_model_account_drag_drag_data_received(GtkTreeDragDest   *drag_dest,
+								   GtkTreePath       *dest,
+								   GtkSelectionData  *selection_data);
+
+static  gboolean    gnc_tree_model_account_drag_row_drop_possible(GtkTreeDragDest   *drag_dest,
+								  GtkTreePath       *dest_path,
+								  GtkSelectionData  *selection_data);
+
+
+/* TreeSortable interface */
+static gboolean     gnc_tree_model_account_drag_get_sort_column_id    (GtkTreeSortable        *sortable,
+								       gint                   *sort_column_id,
+								       GtkSortType            *order);
+static void         gnc_tree_model_account_drag_set_sort_column_id    (GtkTreeSortable        *sortable,
+								       gint                    sort_column_id,
+								       GtkSortType        order);
+static void         gnc_tree_model_account_drag_set_sort_func         (GtkTreeSortable        *sortable,
+								       gint                    sort_column_id,
+								       GtkTreeIterCompareFunc  func,
+								       gpointer                data,
+								       GDestroyNotify          destroy);
+static void         gnc_tree_model_account_drag_set_default_sort_func (GtkTreeSortable        *sortable,
+								       GtkTreeIterCompareFunc  func,
+								       gpointer                data,
+								       GDestroyNotify          destroy);
+static gboolean     gnc_tree_model_account_drag_has_default_sort_func (GtkTreeSortable     *sortable);
+
+G_DEFINE_TYPE_WITH_CODE (GncTreeModelAccountDrag, gnc_tree_model_account_drag, G_TYPE_OBJECT,
+			 G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_MODEL,
+						gnc_tree_model_account_drag_tree_model_init)
+			 G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_SORTABLE,
+						gnc_tree_model_account_drag_tree_sortable_init)
+			 G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_DRAG_SOURCE,
+						gnc_tree_model_account_drag_drag_source_init)
+			 G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_DRAG_DEST,
+						gnc_tree_model_account_drag_drag_dest_init))
+
+
+static void
+gnc_tree_model_account_drag_init (GncTreeModelAccountDrag *tree_model_drag)
+{
+}
+
+static void
+gnc_tree_model_account_drag_class_init (GncTreeModelAccountDragClass *class)
+{
+  GObjectClass *object_class;
+
+  object_class = (GObjectClass *) class;
+
+  object_class->finalize = gnc_tree_model_account_drag_finalize;
+}
+
+
+static void
+gnc_tree_model_account_drag_tree_model_init (GtkTreeModelIface *iface)
+{
+  iface->get_flags = gnc_tree_model_account_drag_get_flags;
+  iface->get_n_columns = gnc_tree_model_account_drag_get_n_columns;
+  iface->get_column_type = gnc_tree_model_account_drag_get_column_type;
+  iface->get_iter = gnc_tree_model_account_drag_get_iter;
+  iface->get_path = gnc_tree_model_account_drag_get_path;
+  iface->get_value = gnc_tree_model_account_drag_get_value;
+  iface->iter_next = gnc_tree_model_account_drag_iter_next;
+  iface->iter_children = gnc_tree_model_account_drag_iter_children;
+  iface->iter_has_child = gnc_tree_model_account_drag_iter_has_child;
+  iface->iter_n_children = gnc_tree_model_account_drag_iter_n_children;
+  iface->iter_nth_child = gnc_tree_model_account_drag_iter_nth_child;
+  iface->iter_parent = gnc_tree_model_account_drag_iter_parent;
+  iface->ref_node = gnc_tree_model_account_drag_ref_node;
+  iface->unref_node = gnc_tree_model_account_drag_unref_node;
+}
+
+static void
+gnc_tree_model_account_drag_tree_sortable_init (GtkTreeSortableIface *iface)
+{
+  iface->get_sort_column_id = gnc_tree_model_account_drag_get_sort_column_id;
+  iface->set_sort_column_id = gnc_tree_model_account_drag_set_sort_column_id;
+  iface->set_sort_func = gnc_tree_model_account_drag_set_sort_func;
+  iface->set_default_sort_func = gnc_tree_model_account_drag_set_default_sort_func;
+  iface->has_default_sort_func = gnc_tree_model_account_drag_has_default_sort_func;
+}
+
+static void
+gnc_tree_model_account_drag_drag_source_init (GtkTreeDragSourceIface *iface)
+{
+  iface->row_draggable = gnc_tree_model_account_drag_row_draggable;
+  iface->drag_data_delete = gnc_tree_model_account_drag_drag_data_delete;
+  iface->drag_data_get = gnc_tree_model_account_drag_drag_data_get;
+}
+
+static void
+gnc_tree_model_account_drag_drag_dest_init (GtkTreeDragDestIface *iface)
+{
+  iface->drag_data_received= gnc_tree_model_account_drag_drag_data_received;
+  iface->row_drop_possible = gnc_tree_model_account_drag_row_drop_possible;
+}
+
+/**
+ * gnc_tree_model_account_drag_new_with_model:
+ * @child_model: A #GtkTreeModel
+ *
+ * Creates a new #GtkTreeModel, with @child_model as the child model.
+ *
+ * Return value: A new #GtkTreeModel.
+ */
+GtkTreeModel *
+gnc_tree_model_account_drag_new_with_model (GtkTreeModel *child_model,
+                                            GtkWidget* widget,
+                                            GncTreeModelAccountDragLookupFunc lookup_func,
+                                            gpointer user_data)
+{
+  GtkTreeModel *retval;
+  GncTreeModelAccountDrag* model;
+
+  g_return_val_if_fail (GTK_IS_TREE_MODEL (child_model), NULL);
+  g_return_val_if_fail (lookup_func != NULL, NULL);
+
+  retval = g_object_new (gnc_tree_model_account_drag_get_type (), NULL);
+
+  model = GNC_TREE_MODEL_ACCOUNT_DRAG(retval);
+  g_object_ref(child_model);
+  model->child_model = child_model;
+  g_object_ref(widget);
+  model->widget = widget;
+  model->lookup_func = lookup_func;
+  model->user_data = user_data;
+
+  // Register signal handlers
+  model->changed_id = g_signal_connect (child_model, "row-changed",
+      G_CALLBACK (gnc_tree_model_account_drag_row_changed),
+      model);
+  model->inserted_id = g_signal_connect (child_model, "row-inserted",
+      G_CALLBACK (gnc_tree_model_account_drag_row_inserted),
+      model);
+  model->has_child_toggled_id
+      = g_signal_connect (child_model, "row-has-child-toggled",
+          G_CALLBACK (gnc_tree_model_account_drag_row_has_child_toggled),
+          model);
+  model->deleted_id = g_signal_connect (child_model, "row-deleted",
+      G_CALLBACK (gnc_tree_model_account_drag_row_deleted),
+      model);
+  model->reordered_id = g_signal_connect (child_model, "rows-reordered",
+      G_CALLBACK (gnc_tree_model_account_drag_rows_reordered),
+      model);
+
+
+  return retval;
+}
+
+GtkTreeModel *
+gnc_tree_model_account_drag_get_model (GncTreeModelAccountDrag *model)
+{
+  g_return_val_if_fail (model != NULL, NULL);
+  return model->child_model;
+}
+
+/* GObject callbacks */
+static void
+gnc_tree_model_account_drag_finalize (GObject *object)
+{
+  GncTreeModelAccountDrag *tree_model = (GncTreeModelAccountDrag *) object;
+
+  // Disconnect signal handlers
+  g_signal_handler_disconnect (tree_model->child_model,
+                               tree_model->changed_id);
+  g_signal_handler_disconnect (tree_model->child_model,
+                               tree_model->inserted_id);
+  g_signal_handler_disconnect (tree_model->child_model,
+                               tree_model->has_child_toggled_id);
+  g_signal_handler_disconnect (tree_model->child_model,
+                               tree_model->deleted_id);
+  g_signal_handler_disconnect (tree_model->child_model,
+                               tree_model->reordered_id);
+
+
+  g_object_unref(tree_model->child_model);
+  tree_model->child_model = NULL;
+  tree_model->lookup_func = NULL;
+  tree_model->user_data = NULL;
+
+  g_object_unref(tree_model->widget);
+  tree_model->widget = NULL;
+
+  /* must chain up */
+  G_OBJECT_CLASS (gnc_tree_model_account_drag_parent_class)->finalize (object);
+}
+
+/* TreeModel signal handlers */
+static void
+gnc_tree_model_account_drag_row_changed(GtkTreeModel *c_model,
+                                        GtkTreePath *c_path,
+                                        GtkTreeIter *c_iter,
+                                        gpointer data)
+{
+  g_return_if_fail(GNC_IS_TREE_MODEL_ACCOUNT_DRAG(data));
+  gtk_tree_model_row_changed(GTK_TREE_MODEL(data), c_path, c_iter);
+}
+
+static void
+gnc_tree_model_account_drag_row_inserted(GtkTreeModel *c_model,
+                                         GtkTreePath *c_path,
+                                         GtkTreeIter *c_iter,
+                                         gpointer data)
+{
+  g_return_if_fail(GNC_IS_TREE_MODEL_ACCOUNT_DRAG(data));
+  gtk_tree_model_row_inserted(GTK_TREE_MODEL(data), c_path, c_iter);
+}
+
+static void
+gnc_tree_model_account_drag_row_has_child_toggled(GtkTreeModel *c_model,
+                                                  GtkTreePath *c_path,
+                                                  GtkTreeIter *c_iter,
+                                                  gpointer data)
+{
+  g_return_if_fail(GNC_IS_TREE_MODEL_ACCOUNT_DRAG(data));
+  gtk_tree_model_row_has_child_toggled(GTK_TREE_MODEL(data), c_path, c_iter);
+}
+
+static void
+gnc_tree_model_account_drag_row_deleted(GtkTreeModel *c_model,
+                                        GtkTreePath *c_path,
+                                        gpointer data)
+{
+  g_return_if_fail(GNC_IS_TREE_MODEL_ACCOUNT_DRAG(data));
+  gtk_tree_model_row_deleted(GTK_TREE_MODEL(data), c_path);
+}
+
+static void
+gnc_tree_model_account_drag_rows_reordered(GtkTreeModel *c_model,
+                                           GtkTreePath *c_path,
+                                           GtkTreeIter *c_iter,
+                                           gint *new_order,
+                                           gpointer data)
+{
+  g_return_if_fail(GNC_IS_TREE_MODEL_ACCOUNT_DRAG(data));
+  gtk_tree_model_rows_reordered(GTK_TREE_MODEL(data), c_path, c_iter, new_order);
+}
+
+/* Fulfill our model requirements */
+static GtkTreeModelFlags
+gnc_tree_model_account_drag_get_flags (GtkTreeModel *tree_model)
+{
+  GncTreeModelAccountDrag *tree_model_drag = (GncTreeModelAccountDrag *) tree_model;
+
+  g_return_val_if_fail (tree_model_drag->child_model != NULL, 0);
+
+  return gtk_tree_model_get_flags (tree_model_drag->child_model);
+}
+
+static gint
+gnc_tree_model_account_drag_get_n_columns (GtkTreeModel *tree_model)
+{
+  GncTreeModelAccountDrag *tree_model_drag = (GncTreeModelAccountDrag *) tree_model;
+
+  g_return_val_if_fail (tree_model_drag->child_model != NULL, 0);
+
+  return gtk_tree_model_get_n_columns (tree_model_drag->child_model);
+}
+
+static GType
+gnc_tree_model_account_drag_get_column_type (GtkTreeModel *tree_model,
+					     gint          index)
+{
+  GncTreeModelAccountDrag *tree_model_drag = (GncTreeModelAccountDrag *) tree_model;
+
+  g_return_val_if_fail (tree_model_drag->child_model != NULL, G_TYPE_INVALID);
+
+  return gtk_tree_model_get_column_type (tree_model_drag->child_model, index);
+}
+
+static gboolean
+gnc_tree_model_account_drag_get_iter (GtkTreeModel *tree_model,
+				      GtkTreeIter  *iter,
+				      GtkTreePath  *path)
+{
+  GncTreeModelAccountDrag *tree_model_drag = (GncTreeModelAccountDrag *) tree_model;
+
+  g_return_val_if_fail (tree_model_drag->child_model != NULL, FALSE);
+  
+  return gtk_tree_model_get_iter (tree_model_drag->child_model, iter, path);
+}  
+ 
+static GtkTreePath *
+gnc_tree_model_account_drag_get_path (GtkTreeModel *tree_model,
+				      GtkTreeIter  *iter)
+{
+  GncTreeModelAccountDrag *tree_model_drag = (GncTreeModelAccountDrag *) tree_model;
+ 
+  g_return_val_if_fail (tree_model_drag->child_model != NULL, NULL);
+ 
+  return gtk_tree_model_get_path (tree_model_drag->child_model, iter);
+}
+
+static void
+gnc_tree_model_account_drag_get_value (GtkTreeModel *tree_model,
+				       GtkTreeIter  *iter,
+				       gint          column,
+				       GValue       *value)
+{
+  GncTreeModelAccountDrag *tree_model_drag = (GncTreeModelAccountDrag *) tree_model;
+
+  g_return_if_fail (tree_model_drag->child_model != NULL);
+
+  gtk_tree_model_get_value (tree_model_drag->child_model,
+			    iter, column, value);
+}
+
+static gboolean
+gnc_tree_model_account_drag_iter_next (GtkTreeModel *tree_model,
+				       GtkTreeIter  *iter)
+{
+  GncTreeModelAccountDrag *tree_model_drag = (GncTreeModelAccountDrag *) tree_model;
+
+  g_return_val_if_fail (tree_model_drag->child_model != NULL, FALSE);
+
+  return gtk_tree_model_iter_next (tree_model_drag->child_model, iter);
+}
+
+static gboolean
+gnc_tree_model_account_drag_iter_children (GtkTreeModel *tree_model,
+					   GtkTreeIter  *iter,
+					   GtkTreeIter  *parent)
+{
+  GncTreeModelAccountDrag *tree_model_drag = (GncTreeModelAccountDrag *) tree_model;
+
+  g_return_val_if_fail (tree_model_drag->child_model != NULL, FALSE);
+
+  return gtk_tree_model_iter_children (tree_model_drag->child_model, iter, parent);
+}
+
+static gboolean
+gnc_tree_model_account_drag_iter_has_child (GtkTreeModel *tree_model,
+					    GtkTreeIter  *iter)
+{
+  GncTreeModelAccountDrag *tree_model_drag = (GncTreeModelAccountDrag *) tree_model;
+
+  g_return_val_if_fail (tree_model_drag->child_model != NULL, FALSE);
+
+  return gtk_tree_model_iter_has_child (tree_model_drag->child_model, iter);
+}
+
+static gint
+gnc_tree_model_account_drag_iter_n_children (GtkTreeModel *tree_model,
+					     GtkTreeIter  *iter)
+{
+  GncTreeModelAccountDrag *tree_model_drag = (GncTreeModelAccountDrag *) tree_model;
+
+  g_return_val_if_fail (tree_model_drag->child_model != NULL, 0);
+
+  return gtk_tree_model_iter_n_children (tree_model_drag->child_model, iter);
+}
+
+static gboolean
+gnc_tree_model_account_drag_iter_nth_child (GtkTreeModel *tree_model,
+				    GtkTreeIter  *iter,
+				    GtkTreeIter  *parent,
+				    gint          n)
+{
+  GncTreeModelAccountDrag *tree_model_drag = (GncTreeModelAccountDrag *) tree_model;
+
+  g_return_val_if_fail (tree_model_drag->child_model != NULL, FALSE);
+
+  return gtk_tree_model_iter_nth_child(tree_model_drag->child_model, iter, parent, n);
+}
+
+static gboolean
+gnc_tree_model_account_drag_iter_parent (GtkTreeModel *tree_model,
+					 GtkTreeIter  *iter,
+					 GtkTreeIter  *child)
+{ 
+  GncTreeModelAccountDrag *tree_model_drag = (GncTreeModelAccountDrag *) tree_model;
+
+  g_return_val_if_fail (tree_model_drag->child_model != NULL, FALSE);
+
+  return gtk_tree_model_iter_parent (tree_model_drag->child_model, iter, child);
+}
+
+static void
+gnc_tree_model_account_drag_ref_node (GtkTreeModel *tree_model,
+				      GtkTreeIter  *iter)
+{
+  GncTreeModelAccountDrag *tree_model_drag = (GncTreeModelAccountDrag *) tree_model;
+
+  g_return_if_fail (tree_model_drag->child_model != NULL);
+
+  gtk_tree_model_ref_node (tree_model_drag->child_model, iter);
+}
+
+static void
+gnc_tree_model_account_drag_unref_node (GtkTreeModel *tree_model,
+					GtkTreeIter  *iter)
+{
+  GncTreeModelAccountDrag *tree_model_drag = (GncTreeModelAccountDrag *) tree_model;
+
+  g_return_if_fail (tree_model_drag->child_model != NULL);
+
+  gtk_tree_model_unref_node (tree_model_drag->child_model, iter);
+}
+
+/* Sortable interface */
+static gboolean
+gnc_tree_model_account_drag_get_sort_column_id (GtkTreeSortable *sortable,
+						gint            *sort_column_id,
+						GtkSortType     *order)
+{
+  GncTreeModelAccountDrag *tree_model_drag = (GncTreeModelAccountDrag *) sortable;
+
+  g_return_val_if_fail (tree_model_drag->child_model != NULL, FALSE);
+
+  return gtk_tree_sortable_get_sort_column_id(GTK_TREE_SORTABLE(tree_model_drag->child_model), sort_column_id, order);
+}
+
+static void
+gnc_tree_model_account_drag_set_sort_column_id (GtkTreeSortable *sortable,
+						gint             sort_column_id,
+						GtkSortType      order)
+{
+  GncTreeModelAccountDrag *tree_model_drag = (GncTreeModelAccountDrag *) sortable;
+
+  g_return_if_fail (tree_model_drag->child_model != NULL);
+
+  gtk_tree_sortable_set_sort_column_id(GTK_TREE_SORTABLE(tree_model_drag->child_model), sort_column_id, order);
+}
+
+static void
+gnc_tree_model_account_drag_set_sort_func (GtkTreeSortable        *sortable,
+					   gint                    sort_column_id,
+					   GtkTreeIterCompareFunc  func,
+					   gpointer                data,
+					   GDestroyNotify          destroy)
+{
+  GncTreeModelAccountDrag *tree_model_drag = (GncTreeModelAccountDrag *) sortable;
+
+  g_return_if_fail (tree_model_drag->child_model != NULL);
+
+  gtk_tree_sortable_set_sort_func(GTK_TREE_SORTABLE(tree_model_drag->child_model), sort_column_id, func, data, destroy);
+}
+
+static void
+gnc_tree_model_account_drag_set_default_sort_func (GtkTreeSortable        *sortable,
+						   GtkTreeIterCompareFunc  func,
+						   gpointer                data,
+						   GDestroyNotify          destroy)
+{
+  GncTreeModelAccountDrag *tree_model_drag = (GncTreeModelAccountDrag *) sortable;
+
+  g_return_if_fail (tree_model_drag->child_model != NULL);
+
+  gtk_tree_sortable_set_default_sort_func(GTK_TREE_SORTABLE(tree_model_drag->child_model), func, data, destroy);
+}
+
+static gboolean
+gnc_tree_model_account_drag_has_default_sort_func (GtkTreeSortable *sortable)
+{
+  GncTreeModelAccountDrag *tree_model_drag = (GncTreeModelAccountDrag *) sortable;
+
+  g_return_val_if_fail (tree_model_drag->child_model != NULL, FALSE);
+
+  return gtk_tree_sortable_has_default_sort_func(GTK_TREE_SORTABLE(tree_model_drag->child_model));
+}
+
+/** GtkTreeDragSource implementation methods ****************************/
+
+static gboolean
+gnc_tree_model_account_drag_row_draggable(GtkTreeDragSource *drag_source,
+					  GtkTreePath *path) 
+{
+  DEBUG("Inside gnc_tree_model_account_drag_source_row_draggable\n");
+  return TRUE;
+}
+
+static gboolean
+gnc_tree_model_account_drag_drag_data_get(GtkTreeDragSource *drag_source,
+					  GtkTreePath *path,
+					  GtkSelectionData *selection_data)
+{
+  Account *account;
+  gchar *full_account_name;
+  GncTreeModelAccountDrag* account_drag;
+
+  g_return_val_if_fail(GNC_IS_TREE_MODEL_ACCOUNT_DRAG(drag_source), FALSE);
+  account_drag = GNC_TREE_MODEL_ACCOUNT_DRAG(drag_source);
+  
+  account = account_drag->lookup_func(path, account_drag->user_data);
+  if (account == NULL)
+    return FALSE;
+
+  full_account_name = gnc_account_get_full_name(account);
+  
+  gtk_selection_data_set(selection_data, selection_data->target, 8, (const guchar *)full_account_name, strlen(full_account_name));
+  DEBUG("Inside gnc_tree_model_account_drag_source_drag_data_get.  Target type \"%s\" desired.  Account name \"%s\" was selected.\n", gdk_atom_name(selection_data->target), full_account_name);
+
+  g_free(full_account_name);
+
+  return TRUE;
+}
+
+static gboolean 
+gnc_tree_model_account_drag_drag_data_delete(GtkTreeDragSource *drag_source,
+					     GtkTreePath *path)
+{
+  DEBUG("Inside gnc_tree_model_account_drag_source_drag_data_delete\n");
+  return TRUE;
+}
+
+/** GtkTreeDragDest implementation methods ****************************/
+
+static gboolean
+gnc_tree_model_account_drag_account_is_child_of(Account *child, Account* possible_parent)
+{
+  Account* parent = child;
+
+  while (parent != NULL)
+    {
+      if (parent == possible_parent)
+        {
+          return TRUE;
+        }
+
+      parent = gnc_account_get_parent(parent);
+    }
+
+  return FALSE;
+}
+
+static gboolean
+gnc_tree_model_account_drag_drag_data_received(GtkTreeDragDest *drag_dest,
+					       GtkTreePath *dest,
+					       GtkSelectionData *selection_data)
+{
+  GtkTreePath *parent_path;
+  Account *new_parent, *dragged_account;
+  gchar *parent_full_account_name, *dragged_full_account_name;
+  GncTreeModelAccountDrag* account_drag;
+
+  DEBUG("Inside gnc_tree_model_account_drag_drag_data_received.\n");
+
+  g_return_val_if_fail(GNC_IS_TREE_MODEL_ACCOUNT_DRAG(drag_dest), FALSE);
+  account_drag = GNC_TREE_MODEL_ACCOUNT_DRAG(drag_dest);
+  
+  // The dest path is spec's as the element to insert before,
+  // but the parent is what's really desired, so move up
+  // the path to find the parent.
+  parent_path = gtk_tree_path_copy(dest);
+  g_return_val_if_fail(parent_path != NULL, FALSE);
+
+  gtk_tree_path_up(parent_path);
+  new_parent = account_drag->lookup_func(parent_path, account_drag->user_data);
+  gtk_tree_path_free(parent_path);
+  g_return_val_if_fail(new_parent != NULL, FALSE);
+
+  parent_full_account_name = gnc_account_get_full_name(new_parent);
+  DEBUG("Account name \"%s\" was drop target.\n", parent_full_account_name);
+  g_free(parent_full_account_name);
+
+  g_return_val_if_fail(g_utf8_validate((gchar*)selection_data->data, selection_data->length, NULL), FALSE);
+  dragged_full_account_name = g_strndup((gchar*)selection_data->data, selection_data->length);
+  DEBUG("Account name \"%s\" was dragged account.\n", dragged_full_account_name);
+
+  dragged_account = gnc_account_lookup_by_full_name(new_parent, dragged_full_account_name);
+  g_free(dragged_full_account_name);
+  g_return_val_if_fail(dragged_account != NULL, FALSE);
+
+  // Make sure that the new hierarchy would still be valid.  Accounts cannot be children
+  // of themselves
+  if (gnc_tree_model_account_drag_account_is_child_of(new_parent, dragged_account)) {
+    GtkWindow *window;
+    GtkWidget *dialog;
+
+    window = account_drag->widget == NULL ? NULL : GTK_WINDOW (gtk_widget_get_toplevel (account_drag->widget));
+
+    dialog = gtk_message_dialog_new (window,
+                                     GTK_DIALOG_DESTROY_WITH_PARENT,
+                                     GTK_MESSAGE_ERROR,
+                                     GTK_BUTTONS_CLOSE,
+                                     _("You cannot move an account into itself."));
+    gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG(dialog),
+                                              _("The destination account is a child of the dragged account."));
+    gtk_dialog_run (GTK_DIALOG (dialog));
+    gtk_widget_destroy (dialog);
+
+    return FALSE;
+  }
+
+  // Make sure the parent account has a valid type for the new child
+  if (xaccAccountTypesCompatible(xaccAccountGetType(new_parent), xaccAccountGetType(dragged_account)) == FALSE) {
+    GtkWindow *window;
+    GtkWidget *dialog;
+
+    window = account_drag->widget == NULL ? NULL : GTK_WINDOW (gtk_widget_get_toplevel (account_drag->widget));
+
+    dialog = gtk_message_dialog_new (window,
+                                     GTK_DIALOG_DESTROY_WITH_PARENT,
+                                     GTK_MESSAGE_ERROR,
+                                     GTK_BUTTONS_CLOSE,
+                                     _("The account cannot be moved because the account types are incompatible."));
+    gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG(dialog),
+                                              _("The destination account type, %s, is not compatible with the new parent's type, %s."),
+                                              xaccAccountGetTypeStr(xaccAccountGetType(dragged_account)),
+                                              xaccAccountGetTypeStr(xaccAccountGetType(new_parent)));
+    gtk_dialog_run (GTK_DIALOG (dialog));
+    gtk_widget_destroy (dialog);
+
+    return FALSE;
+  }
+
+  gnc_suspend_gui_refresh ();
+  gnc_account_append_child (new_parent, dragged_account);
+  gnc_resume_gui_refresh ();
+
+  return TRUE;
+}
+
+static gboolean
+gnc_tree_model_account_drag_row_drop_possible(GtkTreeDragDest *drag_dest,
+                                              GtkTreePath *dest,
+                                              GtkSelectionData *selection_data)
+{
+  DEBUG("Inside gnc_tree_model_account_drag_dest_row_drop_possible.");
+  return TRUE;
+}

Added: gnucash/trunk/src/gnome-utils/gnc-tree-model-account-drag.h
===================================================================
--- gnucash/trunk/src/gnome-utils/gnc-tree-model-account-drag.h	                        (rev 0)
+++ gnucash/trunk/src/gnome-utils/gnc-tree-model-account-drag.h	2009-11-20 19:57:13 UTC (rev 18426)
@@ -0,0 +1,78 @@
+/* gnc-tree-model-account-drag.h
+ * Copyright (C) 2009 Matt Lavin <matt.lavin at gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/** @addtogroup GUI
+    @{ */
+/** @addtogroup GuiTreeModel GnuCash Tree Model
+    @{ */
+/** @file gnc-tree-model-account-drag.h
+    @brief GtkTreeModel wrapper that supports dragging Accounts for reparenting
+    @author Matt Lavin <matt.lavin at gmail.com>
+*/
+
+#ifndef __GNC_TREE_MODEL_ACCOUNT_DRAG_H
+#define __GNC_TREE_MODEL_ACCOUNT_DRAG_H
+
+#include <gtk/gtk.h>
+#include <gtk/gtktreemodel.h>
+
+#include "config.h"
+#include "Account.h"
+#include "gnc-tree-view-account.h"
+
+G_BEGIN_DECLS
+
+#define GNC_TYPE_TREE_MODEL_ACCOUNT_DRAG			(gnc_tree_model_account_drag_get_type ())
+#define GNC_TREE_MODEL_ACCOUNT_DRAG(obj)			(G_TYPE_CHECK_INSTANCE_CAST ((obj), GNC_TYPE_TREE_MODEL_ACCOUNT_DRAG, GncTreeModelAccountDrag))
+#define GNC_TREE_MODEL_ACCOUNT_DRAG_CLASS(klass)		(G_TYPE_CHECK_CLASS_CAST ((klass), GNC_TYPE_TREE_MODEL_ACCOUNT_DRAG, GncTreeModelAccountDragClass))
+#define GNC_IS_TREE_MODEL_ACCOUNT_DRAG(obj)			(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GNC_TYPE_TREE_MODEL_ACCOUNT_DRAG))
+#define GNC_IS_TREE_MODEL_ACCOUNT_DRAG_CLASS(klass)		(G_TYPE_CHECK_CLASS_TYPE ((klass), GNC_TYPE_TREE_MODEL_ACCOUNT_DRAG))
+#define GNC_TREE_MODEL_ACCOUNT_DRAG_GET_CLASS(obj)		(G_TYPE_INSTANCE_GET_CLASS ((obj), GNC_TYPE_TREE_MODEL_ACCOUNT_DRAG, GncTreeModelAccountDragClass))
+
+typedef Account* (*GncTreeModelAccountDragLookupFunc) (GtkTreePath  *path,
+						       gpointer user_data);
+
+typedef struct {
+  GObject parent;
+
+  /* < private > */
+  GtkTreeModel *child_model;
+  GtkWidget* widget;
+  GncTreeModelAccountDragLookupFunc lookup_func;
+  gpointer user_data;
+
+  gulong changed_id;
+  gulong inserted_id;
+  gulong has_child_toggled_id;
+  gulong deleted_id;
+  gulong reordered_id;
+} GncTreeModelAccountDrag;
+
+typedef struct {
+  GObjectClass parent_class;
+} GncTreeModelAccountDragClass;
+
+
+GType         gnc_tree_model_account_drag_get_type       (void) G_GNUC_CONST;
+GtkTreeModel *gnc_tree_model_account_drag_new_with_model (GtkTreeModel *child_model, GtkWidget* widget, GncTreeModelAccountDragLookupFunc lookup_func, gpointer user_data);
+GtkTreeModel *gnc_tree_model_account_drag_get_model      (GncTreeModelAccountDrag *model);            
+
+G_END_DECLS
+
+#endif /* __GNC_TREE_MODEL_ACCOUNT_DRAG_H */

Modified: gnucash/trunk/src/gnome-utils/gnc-tree-view-account.c
===================================================================
--- gnucash/trunk/src/gnome-utils/gnc-tree-view-account.c	2009-11-20 02:10:08 UTC (rev 18425)
+++ gnucash/trunk/src/gnome-utils/gnc-tree-view-account.c	2009-11-20 19:57:13 UTC (rev 18426)
@@ -30,6 +30,7 @@
 
 #include "gnc-tree-view.h"
 #include "gnc-tree-model-account.h"
+#include "gnc-tree-model-account-drag.h"
 #include "gnc-tree-model-account-types.h"
 #include "gnc-tree-view-account.h"
 
@@ -62,10 +63,16 @@
 static void gtva_update_column_names (GncTreeView *view);
 static void gtva_currency_changed_cb (void);
 
+static Account* gnc_tree_view_account_loookup_account (GtkTreePath *path,
+						       gpointer data);
+
 static gboolean gnc_tree_view_account_filter_helper (GtkTreeModel *model,
                                                      GtkTreeIter *iter,
                                                      gpointer data);
 
+static GtkTreeModel*
+gnc_tree_view_account_get_sort_model (GncTreeViewAccount *view);
+
 static void gtva_setup_column_renderer_edited_cb(GncTreeViewAccount *account_view,
                                                  GtkTreeViewColumn *column,
                                                  GtkCellRenderer *renderer,
@@ -469,7 +476,7 @@
 gnc_tree_view_account_new_with_root (Account *root, gboolean show_root)
 {
   GncTreeView *view;
-  GtkTreeModel *model, *f_model, *s_model;
+  GtkTreeModel *model, *f_model, *s_model, *d_model;
   GtkTreePath *virtual_root_path = NULL;
   const gchar *sample_type, *sample_commodity;
   GncTreeViewAccountPrivate *priv;
@@ -497,9 +504,13 @@
   /* Set up the view private sort layer on the common model. */
   s_model = gtk_tree_model_sort_new_with_model(f_model);
   g_object_unref(G_OBJECT(f_model));
-  gnc_tree_view_set_model (view, s_model);
+
+  d_model = gnc_tree_model_account_drag_new_with_model(s_model, GTK_WIDGET(view), gnc_tree_view_account_loookup_account, view);
   g_object_unref(G_OBJECT(s_model));
 
+  gnc_tree_view_set_model (view, d_model);
+  g_object_unref(G_OBJECT(d_model));
+
   /* Set default visibilities */
   gtk_tree_view_set_headers_visible (GTK_TREE_VIEW(view), FALSE);
 
@@ -700,6 +711,28 @@
     g_free(path_string);				\
   }
 
+
+static Account*
+gnc_tree_view_account_loookup_account (GtkTreePath *path,
+				       gpointer data)
+{
+  g_return_val_if_fail(GNC_IS_TREE_VIEW_ACCOUNT(data), NULL);
+
+  return gnc_tree_view_account_get_account_from_path(GNC_TREE_VIEW_ACCOUNT(data), path);
+}
+
+
+static GtkTreeModel*
+gnc_tree_view_account_get_sort_model (GncTreeViewAccount *view)
+{
+  GtkTreeModel *d_model, *s_model;
+
+  d_model = gtk_tree_view_get_model(GTK_TREE_VIEW(view));
+  s_model = gnc_tree_model_account_drag_get_model(GNC_TREE_MODEL_ACCOUNT_DRAG(d_model));
+
+  return s_model;
+}
+
 static GtkTreePath *
 gnc_tree_view_account_get_path_from_account (GncTreeViewAccount *view,
 					     Account *account)
@@ -715,7 +748,7 @@
   }
 
   /* Reach down to the real model and get a path for this account */
-  s_model = gtk_tree_view_get_model(GTK_TREE_VIEW(view));
+  s_model = gnc_tree_view_account_get_sort_model(view);
   f_model = gtk_tree_model_sort_get_model(GTK_TREE_MODEL_SORT(s_model));
   model = gtk_tree_model_filter_get_model(GTK_TREE_MODEL_FILTER(f_model));
   path = gnc_tree_model_account_get_path_from_account (GNC_TREE_MODEL_ACCOUNT(model), account);
@@ -754,7 +787,7 @@
   ENTER("view %p, account %p (%s)", view, account, xaccAccountGetName(account));
 
   /* Reach down to the real model and get an iter for this account */
-  s_model = gtk_tree_view_get_model(GTK_TREE_VIEW(view));
+  s_model = gnc_tree_view_account_get_sort_model(view);
   f_model = gtk_tree_model_sort_get_model(GTK_TREE_MODEL_SORT(s_model));
   model = gtk_tree_model_filter_get_model(GTK_TREE_MODEL_FILTER(f_model));
   if (!gnc_tree_model_account_get_iter_from_account (
@@ -793,7 +826,7 @@
   }
 
   /* Any children? */
-  s_model = gtk_tree_view_get_model(GTK_TREE_VIEW(view));
+  s_model = gnc_tree_view_account_get_sort_model(view);
   num_children = gtk_tree_model_iter_n_children(s_model, &s_iter);
   LEAVE("%d children", num_children);
   return num_children;
@@ -925,7 +958,7 @@
 
   g_return_if_fail(GNC_IS_TREE_VIEW_ACCOUNT(view));
 
-  s_model = gtk_tree_view_get_model(GTK_TREE_VIEW(view));
+  s_model = gnc_tree_view_account_get_sort_model(view);
   f_model = gtk_tree_model_sort_get_model(GTK_TREE_MODEL_SORT(s_model));
   gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (f_model));
 }
@@ -979,7 +1012,7 @@
     g_return_val_if_fail (GNC_IS_TREE_VIEW_ACCOUNT (view), NULL);
     g_return_val_if_fail (s_path != NULL, NULL);
     
-    s_model = gtk_tree_view_get_model(GTK_TREE_VIEW(view));
+    s_model = gnc_tree_view_account_get_sort_model(view);
     f_path = gtk_tree_model_sort_convert_path_to_child_path (
         GTK_TREE_MODEL_SORT (s_model), s_path);
     if (!f_path) {
@@ -1010,18 +1043,20 @@
 
 
 Account *
-gnc_tree_view_account_get_account_from_iter (GtkTreeModel *s_model,
+gnc_tree_view_account_get_account_from_iter (GtkTreeModel *d_model,
 					     GtkTreeIter  *s_iter)
 {
-  GtkTreeModel *model, *f_model;
+  GtkTreeModel *model, *f_model, *s_model;
   GtkTreeIter iter, f_iter;
   Account *account;
 
-  g_return_val_if_fail (GTK_IS_TREE_MODEL_SORT(s_model), NULL);
+  g_return_val_if_fail (GNC_IS_TREE_MODEL_ACCOUNT_DRAG(d_model), NULL);
   g_return_val_if_fail (s_iter != NULL, NULL);
 
-  ENTER("model %p, iter %p", s_model, s_iter);
+  ENTER("model %p, iter %p", d_model, s_iter);
 
+  s_model = gnc_tree_model_account_drag_get_model(GNC_TREE_MODEL_ACCOUNT_DRAG (d_model));  
+
   gtk_tree_model_sort_convert_iter_to_child_iter (GTK_TREE_MODEL_SORT(s_model),
 						  &f_iter,
 						  s_iter);
@@ -1044,7 +1079,7 @@
 gnc_tree_view_account_get_selected_account (GncTreeViewAccount *view)
 {
     GtkTreeSelection *selection;
-    GtkTreeModel *f_model, *s_model;
+    GtkTreeModel *f_model, *s_model, *d_model;
     GtkTreeIter iter, f_iter, s_iter;
     Account *account;
     GtkSelectionMode mode;
@@ -1057,11 +1092,13 @@
     if ((mode != GTK_SELECTION_SINGLE) && (mode != GTK_SELECTION_BROWSE)) {
       return NULL;
     }
-    if (!gtk_tree_selection_get_selected (selection, &s_model, &s_iter)) {
+    if (!gtk_tree_selection_get_selected (selection, &d_model, &s_iter)) {
       LEAVE("no account, get_selected failed");
       return FALSE;
     }
 
+    
+    s_model = gnc_tree_model_account_drag_get_model(GNC_TREE_MODEL_ACCOUNT_DRAG (d_model));
     gtk_tree_model_sort_convert_iter_to_child_iter (GTK_TREE_MODEL_SORT (s_model),
 						    &f_iter, &s_iter);
 
@@ -1097,7 +1134,7 @@
   if (account == NULL)
     return;
 
-  s_model = gtk_tree_view_get_model(GTK_TREE_VIEW(view));
+  s_model = gnc_tree_view_account_get_sort_model(view);
   f_model = gtk_tree_model_sort_get_model(GTK_TREE_MODEL_SORT(s_model));
   model = gtk_tree_model_filter_get_model(GTK_TREE_MODEL_FILTER(f_model));
 
@@ -1223,7 +1260,7 @@
 
   g_return_if_fail (GNC_IS_TREE_VIEW_ACCOUNT (view));
 
-  s_model = gtk_tree_view_get_model(GTK_TREE_VIEW(view));
+  s_model = gnc_tree_view_account_get_sort_model(view);
   f_model = gtk_tree_model_sort_get_model(GTK_TREE_MODEL_SORT(s_model));
   model = gtk_tree_model_filter_get_model(GTK_TREE_MODEL_FILTER(f_model));
 
@@ -1304,7 +1341,7 @@
   }
 
   /* Any children? */
-  s_model = gtk_tree_view_get_model(GTK_TREE_VIEW(view));
+  s_model = gnc_tree_view_account_get_sort_model(view);
   num_children = gtk_tree_model_iter_n_children(s_model, &si_account);
   if (num_children == 0) {
     LEAVE("no children");
@@ -1377,7 +1414,7 @@
     ENTER("view %p", view);
     g_return_val_if_fail (GNC_IS_TREE_VIEW_ACCOUNT (view), NULL);
 
-    s_model = gtk_tree_view_get_model (GTK_TREE_VIEW(view));
+    s_model = gnc_tree_view_account_get_sort_model(view);
     gtk_tree_view_get_cursor (GTK_TREE_VIEW(view), &s_path, NULL);
     if (!s_path) {
       LEAVE("no account");
@@ -1457,15 +1494,14 @@
 static void
 account_cell_kvp_data_func (GtkTreeViewColumn *tree_column,
 			    GtkCellRenderer *cell,
-			    GtkTreeModel *s_model,
+			    GtkTreeModel *model,
 			    GtkTreeIter *s_iter,
 			    gpointer key)
 {
     Account *account;
     kvp_frame * frame;
     
-    g_return_if_fail (GTK_IS_TREE_MODEL_SORT (s_model));
-    account = gnc_tree_view_account_get_account_from_iter(s_model, s_iter);
+    account = gnc_tree_view_account_get_account_from_iter(model, s_iter);
     frame = xaccAccountGetSlots(account);
     
     g_object_set (G_OBJECT (cell),
@@ -1503,10 +1539,10 @@
 }
 
 static void col_edited_helper(GtkCellRendererText *cell, gchar *path_string, 
-                              gchar *new_text, gpointer _s_model)
+                              gchar *new_text, gpointer _model)
 {
     Account *account;
-    GtkTreeModel *s_model;
+    GtkTreeModel *model;
     GtkTreeIter s_iter;
     GncTreeViewAccountColumnTextEdited col_edited_cb;
     GtkTreeViewColumn *col;
@@ -1515,26 +1551,25 @@
                                       "column_edited_callback");
     col = GTK_TREE_VIEW_COLUMN(g_object_get_data(G_OBJECT(cell), 
                                                  "column_view"));
-    s_model = GTK_TREE_MODEL(_s_model);
+    model = GTK_TREE_MODEL(_model);
 
-    if (!gtk_tree_model_get_iter_from_string(s_model, &s_iter, path_string))
+    if (!gtk_tree_model_get_iter_from_string(model, &s_iter, path_string))
         return;
         
-    account = gnc_tree_view_account_get_account_from_iter(s_model, &s_iter);
+    account = gnc_tree_view_account_get_account_from_iter(model, &s_iter);
     col_edited_cb(account, col, new_text);
 }
 
 static void col_source_helper(GtkTreeViewColumn *col, GtkCellRenderer *cell,
-                              GtkTreeModel *s_model, GtkTreeIter *s_iter,
+                              GtkTreeModel *model, GtkTreeIter *iter,
                               gpointer _col_source_cb)
 {
     Account *account;
     gchar *text;
     GncTreeViewAccountColumnSource col_source_cb;
     
-    g_return_if_fail (GTK_IS_TREE_MODEL_SORT (s_model));
     col_source_cb = (GncTreeViewAccountColumnSource) _col_source_cb;
-    account = gnc_tree_view_account_get_account_from_iter(s_model, s_iter);
+    account = gnc_tree_view_account_get_account_from_iter(model, iter);
     text = col_source_cb(account, col, cell);
     g_object_set (G_OBJECT (cell), "text", text, "xalign", 1.0, NULL);
     g_free(text);
@@ -1556,7 +1591,7 @@
   {
     g_object_set(G_OBJECT(renderer), "editable", FALSE, NULL);
     g_object_set_data(G_OBJECT(renderer), "column_edited_callback", col_edited_cb);
-    s_model = gtk_tree_view_get_model(GTK_TREE_VIEW(account_view));
+    s_model = gnc_tree_view_account_get_sort_model(account_view);
     g_signal_handlers_disconnect_by_func(G_OBJECT(renderer), col_edited_cb, s_model);
     g_object_set_data(G_OBJECT(renderer), "column_view", column);
   }
@@ -1565,7 +1600,7 @@
     g_object_set(G_OBJECT(renderer), "editable", TRUE, NULL);
     g_object_set_data(G_OBJECT(renderer), "column_edited_callback",
                       col_edited_cb);
-    s_model = gtk_tree_view_get_model(GTK_TREE_VIEW(account_view));
+    s_model = gnc_tree_view_account_get_sort_model(account_view);
     g_signal_connect(G_OBJECT(renderer), "edited", 
                      (GCallback) col_edited_helper, s_model);
     g_object_set_data(G_OBJECT(renderer), "column_view", column);



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