internal void ShowDropMark(Point mousePosition)
{
if (m_dropMarkAdorner == null)
{
var dataGridContext = this.DataGridContext;
var grid = (dataGridContext != null) ? dataGridContext.DataGridControl : null;
Pen pen = UIViewBase.GetDropMarkPen(this);
if ((pen == null) && (grid != null))
{
UIViewBase uiViewBase = grid.GetView() as UIViewBase;
pen = uiViewBase.DefaultDropMarkPen;
}
DropMarkOrientation orientation = UIViewBase.GetDropMarkOrientation(this);
if ((orientation == DropMarkOrientation.Default) && (grid != null))
{
UIViewBase uiViewBase = grid.GetView() as UIViewBase;
orientation = uiViewBase.DefaultDropMarkOrientation;
}
m_dropMarkAdorner = new DropMarkAdorner(this, pen, orientation);
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(this);
if (adornerLayer != null)
{
adornerLayer.Add(m_dropMarkAdorner);
}
}
m_dropMarkAdorner.UpdateAlignment(mousePosition);
}
internal void ShowFarDropMark(Point mousePosition)
{
int itemsCount = this.Items.Count;
if (itemsCount < 1)
{
if (m_dropMarkAdorner == null)
{
DataGridContext dataGridContext = DataGridControl.GetDataGridContext(this);
DataGridControl grid = (dataGridContext != null)
? dataGridContext.DataGridControl
: null;
Pen pen = UIViewBase.GetDropMarkPen(this);
if ((pen == null) && (grid != null))
{
UIViewBase uiViewBase = grid.GetView() as UIViewBase;
pen = uiViewBase.DefaultDropMarkPen;
}
DropMarkOrientation orientation = UIViewBase.GetDropMarkOrientation(this);
if ((orientation == DropMarkOrientation.Default) && (grid != null))
{
UIViewBase uiViewBase = grid.GetView() as UIViewBase;
orientation = uiViewBase.DefaultDropMarkOrientation;
}
m_dropMarkAdorner = new DropMarkAdorner(this, pen, orientation);
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(this);
if (adornerLayer != null)
{
adornerLayer.Add(m_dropMarkAdorner);
}
}
// We Only want the drop mark to be displayed at the end of the HierarchicalGroupByControlNode
m_dropMarkAdorner.ForceAlignment(DropMarkAlignment.Far);
}
else
{
HierarchicalGroupByItem hierarchicalGroupByItem = this.ItemContainerGenerator.ContainerFromIndex(itemsCount - 1) as HierarchicalGroupByItem;
Debug.Assert(hierarchicalGroupByItem != null);
GroupLevelDescription groupLevelDescription = hierarchicalGroupByItem.Content as GroupLevelDescription;
Debug.Assert(groupLevelDescription != null);
// Show Far DropMark only if not already grouped
if (this.Items.Contains(groupLevelDescription) == false)
{
hierarchicalGroupByItem.ShowFarDropMark(mousePosition);
}
}
}
// A null value for the pen parameter means that the adorner will not show any visual cue.
public DropMarkAdorner( UIElement adornedElement, Pen pen, DropMarkOrientation orientation )
: base( adornedElement )
{
Debug.Assert( orientation != DropMarkOrientation.Default, "A DropMarkAdorner without a specific orientation should virtually never happen. The only known way to do this would be to have a grid element not hosted in a DataGridControl. The DropMarkAdorner should react well to this nonetheless." );
m_pen = pen;
m_orientation = orientation;
this.IsHitTestVisible = false;
}
// A null value for the pen parameter means that the adorner will not show any visual cue.
public DropMarkAdorner(UIElement adornedElement, Pen pen, DropMarkOrientation orientation)
: base(adornedElement)
{
Debug.Assert(orientation != DropMarkOrientation.Default, "A DropMarkAdorner without a specific orientation should virtually never happen. The only known way to do this would be to have a grid element not hosted in a DataGridControl. The DropMarkAdorner should react well to this nonetheless.");
m_pen = pen;
m_orientation = orientation;
this.IsHitTestVisible = false;
}
private void ShowDropMark(Point mousePosition, DropMarkAlignment defaultAlignment, bool forceDefaultAlignment)
{
if (m_dropMarkAdorner == null)
{
DataGridContext dataGridContext = DataGridControl.GetDataGridContext(this);
DataGridControl grid = (dataGridContext != null)
? dataGridContext.DataGridControl
: null;
Pen pen = UIViewBase.GetDropMarkPen(this);
if ((pen == null) && (grid != null))
{
UIViewBase uiViewBase = grid.GetView() as UIViewBase;
pen = uiViewBase.DefaultDropMarkPen;
}
DropMarkOrientation orientation = Nequeo.Wpf.DataGrid.Views.UIViewBase.GetDropMarkOrientation(this);
if ((orientation == DropMarkOrientation.Default) && (grid != null))
{
UIViewBase uiViewBase = grid.GetView() as UIViewBase;
orientation = uiViewBase.DefaultDropMarkOrientation;
}
m_dropMarkAdorner = new DropMarkAdorner(this, pen, orientation);
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(this);
if (adornerLayer != null)
{
adornerLayer.Add(m_dropMarkAdorner);
}
}
if (forceDefaultAlignment)
{
m_dropMarkAdorner.ForceAlignment(defaultAlignment);
}
else
{
m_dropMarkAdorner.UpdateAlignment(mousePosition);
}
}
private void ShowFarDropMark()
{
if (m_dropMarkAdorner == null)
{
DataGridContext dataGridContext = DataGridControl.GetDataGridContext(this);
DataGridControl grid = (dataGridContext != null)
? dataGridContext.DataGridControl
: null;
Pen pen = Xceed.Wpf.DataGrid.Views.UIViewBase.GetDropMarkPen(this);
if ((pen == null) && (grid != null))
{
UIViewBase uiViewBase = grid.GetView() as UIViewBase;
pen = uiViewBase.DefaultDropMarkPen;
}
DropMarkOrientation orientation = UIViewBase.GetDropMarkOrientation(this);
if ((orientation == DropMarkOrientation.Default) && (grid != null))
{
UIViewBase uiViewBase = grid.GetView() as UIViewBase;
orientation = uiViewBase.DefaultDropMarkOrientation;
}
m_dropMarkAdorner = new DropMarkAdorner(this, pen, orientation);
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(this);
if (adornerLayer != null)
{
adornerLayer.Add(m_dropMarkAdorner);
}
}
// We Only want the drop mark to be displayed at the end of the HierarchicalGroupByControlNode
m_dropMarkAdorner.ForceAlignment(DropMarkAlignment.Far);
}
public static void SetDropMarkOrientation(DependencyObject obj, DropMarkOrientation value)
{
obj.SetValue(UIViewBase.DropMarkOrientationProperty, value);
}
public static void SetDropMarkOrientation( DependencyObject obj, DropMarkOrientation value )
{
obj.SetValue( UIViewBase.DropMarkOrientationProperty, value );
}
