public static bool AllowMoving(BaseLayoutItem item, BaseLayoutItem target)
{
bool result = false;
if (target == null)
{
return(false);
}
if (DragHelper.IsItemInGroup(item) && DragHelper.IsTargetInGroup(target) && (target is LayoutControlItem))
{
return(true);
}
BaseLayoutItem draggedItem = null, targetItem = null;
if (item is LayoutControlItem)
{
draggedItem = item as LayoutControlItem;
if (target is LayoutControlItem)
{
targetItem = target as LayoutControlItem;
if (targetItem.Parent == draggedItem.Parent)
{
result = true;
}
}
if (target is LayoutGroup)
{
targetItem = target as LayoutGroup;
if (targetItem.Parent == draggedItem.Parent)
{
result = true;
}
}
}
if (item is LayoutGroup)
{
draggedItem = item as LayoutGroup;
if (target is LayoutControlItem)
{
targetItem = target as LayoutControlItem;
if (targetItem.Parent == draggedItem.Parent)
{
result = true;
}
}
if (target is LayoutGroup)
{
targetItem = target as LayoutGroup;
if (targetItem.Parent == draggedItem.Parent)
{
result = true;
}
}
}
return(result);
}
public override bool CanDrop(Point point, ILayoutElement element)
{
DockLayoutElementDragInfo dockLayoutElementDragInfo = new DockLayoutElementDragInfo(this.View, point, element);
BaseLayoutItem draggedItem = dockLayoutElementDragInfo.Item;
BaseLayoutItem target = dockLayoutElementDragInfo.Target;
if (!DragHelper.IsItemInGroup(draggedItem) && !DragHelper.IsTargetInGroup(target))
{
return(base.CanDrop(point, element));
}
bool result = DragHelper.AllowMoving(draggedItem, target);
return(result);
}
public override bool CanDrop(Point point, ILayoutElement element)
{
DockLayoutElementDragInfo dockLayoutElementDragInfo = new DockLayoutElementDragInfo(base.View, point, element);
var draggedItem = dockLayoutElementDragInfo.Item;
var target = dockLayoutElementDragInfo.Target;
if ((dockLayoutElementDragInfo.DropTarget is HiddenItemElement || dockLayoutElementDragInfo.DropTarget is HiddenItemsListElement) && dockLayoutElementDragInfo.Item.AllowHide)
{
LayoutItemType itemType = dockLayoutElementDragInfo.Item.ItemType;
return(LayoutItemsHelper.IsLayoutItem(dockLayoutElementDragInfo.Item) || itemType == LayoutItemType.Group);
}
if (!DragHelper.IsItemInGroup(draggedItem) && !DragHelper.IsTargetInGroup(target))
{
return(base.CanDrop(point, element));
}
return(DragHelper.AllowMoving(draggedItem, target));
}