Add test for deleting item from wxDataViewCtrl

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@47481 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/dataview.cpp

@@ -118,6 +118,7 @@ public:
     GtkWxTreeModel* GetOwner()          { return m_owner; }
 
     bool ItemAdded( const wxDataViewItem &parent, const wxDataViewItem &item );
+    bool ItemDeleted( const wxDataViewItem &item );
     
 protected:
     void InitTree();
@@ -612,6 +613,16 @@ bool wxGtkTreeModel::ItemAdded( const wxDataViewItem &parent, const wxDataViewIt
     return true;
 }
 
+bool wxGtkTreeModel::ItemDeleted( const wxDataViewItem &item )
+{
+    wxGtkTreeModelNode *node = FindNode( item );
+    wxGtkTreeModelNode *parent = node->GetParent();
+    parent->GetChildren().Remove( node );
+    delete node;
+
+    return true;
+}
+
 gboolean wxGtkTreeModel::get_iter( GtkTreeIter *iter, GtkTreePath *path )
 {
     int depth = gtk_tree_path_get_depth( path );
@@ -1228,6 +1239,8 @@ bool wxGtkDataViewModelNotifier::ItemDeleted( const wxDataViewItem &item )
         GTK_TREE_MODEL(m_wxgtk_model), path );
     gtk_tree_path_free (path);
 
+    m_wxgtk_model->model->ItemDeleted( item );
+    
     return true;
 }