public void UpdateGroupingFields()
{
if (this.Description == null || string.IsNullOrEmpty(this.Description.Expression))
{
this.groupFields = new GroupFieldElement[0];
}
else
{
this.panel.DisposeChildren();
SortDescriptorCollection groupNames = this.Description.GroupNames;
int count = groupNames.Count;
List <GroupFieldElement> groupFieldElementList = new List <GroupFieldElement>();
GridViewColumnCollection columns = this.TemplateElement.ViewTemplate.Columns;
for (int index = 0; index < count; ++index)
{
GroupFieldElement groupFieldElement = new GroupFieldElement(this.TemplateElement, this.Description, groupNames[index]);
if (groupFieldElement.Column != null)
{
this.panel.Children.Add((RadElement)groupFieldElement);
groupFieldElementList.Add(groupFieldElement);
if (index < count - 1)
{
this.panel.Children.Add((RadElement) new GroupLinkElement(this.TemplateElement)
{
Type = GroupLinkElement.LinkType.NamesLink
});
}
}
}
this.groupFields = groupFieldElementList.ToArray();
}
}
protected virtual void CalcFinalRectRightToLeftBottomGroupLink(
GroupElement fromGroupElement,
GroupElement toGroupElement,
out PointF beingPoint,
out PointF endPoint)
{
GroupFieldElement groupingFieldElement1 = toGroupElement.GroupingFieldElements[0];
GroupFieldElement groupingFieldElement2 = fromGroupElement.GroupingFieldElements[fromGroupElement.GroupingFieldElements.Count - 1];
Rectangle boundingRectangle1 = groupingFieldElement1.ControlBoundingRectangle;
Rectangle boundingRectangle2 = groupingFieldElement2.ControlBoundingRectangle;
float x1;
float y1;
float x2;
float y2;
if (this.LinkPosition == TemplateGroupsElement.GroupLinkPosition.Bottom)
{
x1 = (float)(boundingRectangle1.Right + groupingFieldElement1.Padding.Right);
y1 = (float)(boundingRectangle2.Bottom + groupingFieldElement2.Padding.Bottom);
x2 = (float)(boundingRectangle2.Right - this.LinkOffset);
y2 = (float)(boundingRectangle1.Bottom + Math.Abs(boundingRectangle2.Bottom - boundingRectangle1.Y));
}
else
{
x1 = (float)(boundingRectangle1.X + this.LinkOffset);
y1 = (float)(boundingRectangle2.Y - Math.Abs(boundingRectangle2.Bottom - boundingRectangle1.Y));
x2 = (float)(boundingRectangle2.X - groupingFieldElement2.Padding.Left);
y2 = (float)(boundingRectangle1.Y - groupingFieldElement1.Padding.Top);
}
beingPoint = new PointF(x1, y1);
endPoint = new PointF(x2, y2);
}
protected override void OnPreviewDropTarget(PreviewDropTargetEventArgs e)
{
base.OnPreviewDropTarget(e);
TemplateGroupsElement dropTarget = e.DropTarget as TemplateGroupsElement;
if (dropTarget == null || dropTarget.CanDragOver(e.DragInstance))
{
return;
}
GroupFieldElement dragInstance = e.DragInstance as GroupFieldElement;
if (dragInstance != null)
{
e.DropTarget = (ISupportDrop)dragInstance.TemplateElement;
}
else
{
e.DropTarget = (ISupportDrop)dropTarget.GroupPanelElement;
}
}
protected virtual IGridDragDropBehavior GetDragDropBehavior()
{
IGridDragDropBehavior dragDropBehavior = (IGridDragDropBehavior)null;
ISupportDrop dropTarget = this.DropTarget;
if (dropTarget is GridHeaderCellElement)
{
dragDropBehavior = (IGridDragDropBehavior) new GridColumnDragDropBehvavior();
}
else if (dropTarget is GridDataRowElement)
{
dragDropBehavior = (IGridDragDropBehavior) new GridRowDragDropBehavior();
}
else
{
GroupFieldElement groupFieldElement = dropTarget as GroupFieldElement;
}
dragDropBehavior?.Initialize(this.GridViewElement);
return(dragDropBehavior);
}
