void IDropTarget.DragLeave(UIElement draggedElement)
{
ColumnManagerCell cell = draggedElement as ColumnManagerCell;
if (cell == null)
{
return;
}
DataGridContext draggedDetailContext = DataGridControl.GetDataGridContext(draggedElement);
int lastIndex = draggedDetailContext.GroupLevelDescriptions.Count - 1;
if (lastIndex > -1)
{
GroupByItem groupByItem = this.ItemContainerGenerator.ContainerFromIndex(lastIndex) as GroupByItem;
Debug.Assert(groupByItem != null);
if (groupByItem == null)
{
throw new DataGridInternalException("groupByItem is null.");
}
groupByItem.HideDropMark();
}
else
{
this.HideDropMark();
}
}
protected override void PrepareContainerForItemOverride(DependencyObject element, object item)
{
DataGridContext dataGridContext = DataGridControl.GetDataGridContext(this);
DataGridControl grid = (dataGridContext != null)
? dataGridContext.DataGridControl
: null;
base.PrepareContainerForItemOverride(element, item);
if (grid != null)
{
GroupByItem groupByItem = ( GroupByItem )element;
groupByItem.PrepareDefaultStyleKey(grid.GetView());
}
}
void IDropTarget.Drop(UIElement draggedElement)
{
if (m_dropMarkAdorner != null)
{
DataGridContext dataGridContext = DataGridControl.GetDataGridContext(this);
Debug.Assert(dataGridContext != null);
if (dataGridContext != null)
{
GroupLevelDescription draggedOverGroupLevelDescription = this.Content as GroupLevelDescription;
Debug.Assert(draggedOverGroupLevelDescription != null);
if (draggedOverGroupLevelDescription != null)
{
DropMarkAlignment alignment = m_dropMarkAdorner.Alignment;
this.HideDropMark();
ColumnManagerCell draggedCell = draggedElement as ColumnManagerCell;
if (draggedCell != null)
{
GroupingHelper.AddNewGroupFromColumnManagerCell(draggedCell, draggedOverGroupLevelDescription, alignment, dataGridContext.DataGridControl);
}
else
{
GroupByItem draggedGroupBy = draggedElement as GroupByItem;
Debug.Assert(draggedGroupBy != null);
if (draggedGroupBy != null)
{
GroupLevelDescription draggedGroupLevelDescription = draggedGroupBy.Content as GroupLevelDescription;
GroupingHelper.MoveGroupDescription(dataGridContext.Columns, dataGridContext.Items.GroupDescriptions, draggedOverGroupLevelDescription, alignment, draggedGroupLevelDescription, dataGridContext.DataGridControl);
}
}
}
}
}
}
private static void OnSortDirectionInternalChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
GroupByItem groupByItem = ( GroupByItem )sender;
groupByItem.OnPropertyChanged(new PropertyChangedEventArgs("SortDirection"));
}