+ // no need to fix up array
+
+ unsigned int len = m_array.GetCount();
+
+ unsigned int pos = m_array.Add( len );
+
+ if (pos == 0)
+ return wxDataViewListModel::RowPrepended();
+
+ if (pos == len)
+ return wxDataViewListModel::RowAppended();
+
+ return wxDataViewListModel::RowInserted( pos );
+}
+
+bool wxDataViewSortedListModel::ChildRowPrepended()
+{
+ // fix up array
+ unsigned int i;
+ unsigned int len = m_array.GetCount();
+ for (i = 0; i < len; i++)
+ {
+ unsigned int value = m_array[i];
+ m_array[i] = value+1;
+ }
+
+ unsigned int pos = m_array.Add( 0 );
+
+ if (pos == 0)
+ return wxDataViewListModel::RowPrepended();
+
+ if (pos == len)
+ return wxDataViewListModel::RowAppended();
+
+ return wxDataViewListModel::RowInserted( pos );
+}
+
+bool wxDataViewSortedListModel::ChildRowInserted( unsigned int before )
+{
+ // fix up array
+ unsigned int i;
+ unsigned int len = m_array.GetCount();
+ for (i = 0; i < len; i++)
+ {
+ unsigned int value = m_array[i];
+ if (value >= before)
+ m_array[i] = value+1;
+ }
+
+ unsigned int pos = m_array.Add( before );
+
+ if (pos == 0)
+ return wxDataViewListModel::RowPrepended();
+
+ if (pos == len)
+ return wxDataViewListModel::RowAppended();
+
+ return wxDataViewListModel::RowInserted( pos );
+}
+
+bool wxDataViewSortedListModel::ChildRowDeleted( unsigned int row )
+{
+ unsigned int i;
+ unsigned int len = m_array.GetCount();
+ int pos = -1;
+ for (i = 0; i < len; i++)
+ {
+ unsigned int value = m_array[i];
+ if (value == row)
+ {
+ // delete later
+ pos = (int) i;
+ }
+ else
+ {
+ // Fix up array
+ if (value > row)
+ m_array[i] = value-1;
+ }
+ }
+
+ if (pos == -1)
+ return false; // we should probably assert
+
+ // remove
+ m_array.RemoveAt( (unsigned int) pos );
+
+ return wxDataViewListModel::RowDeleted( (unsigned int) pos);
+}
+
+bool wxDataViewSortedListModel::ChildRowChanged( unsigned int row )
+{
+ unsigned int i;
+ unsigned int len = m_array.GetCount();
+