public virtual void RearrangeModels(ModelDropEventArgs args)
{
DropTargetLocation dropTargetLocation = args.DropTargetLocation;
if (dropTargetLocation == DropTargetLocation.Background)
{
this.ListView.AddObjects(args.SourceModels);
}
else if (dropTargetLocation != DropTargetLocation.AboveItem)
{
if (dropTargetLocation != DropTargetLocation.BelowItem)
{
return;
}
this.ListView.MoveObjects(args.DropTargetIndex + 1, args.SourceModels);
}
else
{
this.ListView.MoveObjects(args.DropTargetIndex, args.SourceModels);
}
if (args.SourceListView != this.ListView)
{
args.SourceListView.RemoveObjects(args.SourceModels);
}
}
public DragDropEffects CanModelDrop(ConnectionInfo dropSource,
ConnectionInfo dropTarget,
DropTargetLocation dropTargetLocation)
{
var dragDropEffect = DragDropEffects.None;
if (!NodeIsDraggable(dropSource))
{
_infoMessage = Language.strNodeNotDraggable;
_enableFeedback = false;
}
else
{
switch (dropTargetLocation)
{
case DropTargetLocation.Item:
dragDropEffect = HandleCanDropOnItem(dropSource, dropTarget);
break;
case DropTargetLocation.AboveItem:
case DropTargetLocation.BelowItem:
dragDropEffect = HandleCanDropBetweenItems(dropSource, dropTarget);
break;
}
}
return(dragDropEffect);
}
public void DropModel(ConnectionInfo dropSource, ConnectionInfo dropTarget, DropTargetLocation dropTargetLocation)
{
if (dropTargetLocation == DropTargetLocation.Item)
DropModelOntoTarget(dropSource, dropTarget);
else if (dropTargetLocation == DropTargetLocation.AboveItem)
DropModelAboveTarget(dropSource, dropTarget);
else if (dropTargetLocation == DropTargetLocation.BelowItem)
DropModelBelowTarget(dropSource, dropTarget);
}
public DragDropEffects CanModelDrop(ConnectionInfo dropSource, ConnectionInfo dropTarget, DropTargetLocation dropTargetLocation)
{
var dragDropEffect = DragDropEffects.None;
if (!NodeIsDraggable(dropSource))
{
_infoMessage = Language.strNodeNotDraggable;
_enableFeedback = false;
}
else if (dropTargetLocation == DropTargetLocation.Item)
dragDropEffect = HandleCanDropOnItem(dropSource, dropTarget);
else if (dropTargetLocation == DropTargetLocation.AboveItem || dropTargetLocation == DropTargetLocation.BelowItem)
dragDropEffect = HandleCanDropBetweenItems(dropSource, dropTarget);
return dragDropEffect;
}
public void DropModel(ConnectionInfo dropSource, ConnectionInfo dropTarget, DropTargetLocation dropTargetLocation)
{
if (dropTargetLocation == DropTargetLocation.Item)
{
DropModelOntoTarget(dropSource, dropTarget);
}
else if (dropTargetLocation == DropTargetLocation.AboveItem)
{
DropModelAboveTarget(dropSource, dropTarget);
}
else if (dropTargetLocation == DropTargetLocation.BelowItem)
{
DropModelBelowTarget(dropSource, dropTarget);
}
}
public void DropModel(ConnectionInfo dropSource,
ConnectionInfo dropTarget,
DropTargetLocation dropTargetLocation)
{
switch (dropTargetLocation)
{
case DropTargetLocation.Item:
DropModelOntoTarget(dropSource, dropTarget);
break;
case DropTargetLocation.AboveItem:
DropModelAboveTarget(dropSource, dropTarget);
break;
case DropTargetLocation.BelowItem:
DropModelBelowTarget(dropSource, dropTarget);
break;
}
}
private void HandleReorder(ExtractableColumn sourceColumn, IOrderable targetOrderable, DropTargetLocation location)
{
if (targetOrderable == null)
{
targetOrderable = olvSelected.Objects.Cast <IOrderable>().OrderByDescending(o => o.Order).FirstOrDefault();
}
if (targetOrderable == null)
{
return;
}
int destinationOrder = targetOrderable.Order;
switch (location)
{
case DropTargetLocation.AboveItem:
//bump down the other columns
foreach (ConcreteColumn c in olvSelected.Objects.OfType <ConcreteColumn>().ToArray())
{
if (c.Order >= destinationOrder && !Equals(c, sourceColumn))
{
c.Order++;
c.SaveToDatabase();
}
}
//should now be space at the destination order position
sourceColumn.Order = destinationOrder;
break;
case DropTargetLocation.None:
case DropTargetLocation.BelowItem:
//bump up other columns
foreach (ConcreteColumn c in olvSelected.Objects.OfType <ConcreteColumn>().ToArray())
{
if (c.Order <= destinationOrder && !Equals(c, sourceColumn))
{
c.Order--;
c.SaveToDatabase();
}
}
sourceColumn.Order = destinationOrder;
break;
default:
throw new ArgumentOutOfRangeException();
}
sourceColumn.SaveToDatabase();
olvSelected.RefreshObjects(olvSelected.Objects.OfType <object>().ToArray());
SortSelectedByOrder();
}
/// <summary>
/// When the mouse is at the given point, what should the target of the drop be?
/// </summary>
/// <remarks>This method should update the DropTarget* members of the given arg block</remarks>
/// <param name="pt">The mouse point, in client co-ordinates</param>
protected virtual void CalculateDropTarget(OlvDropEventArgs args, Point pt)
{
const int SMALL_VALUE = 3;
DropTargetLocation location = DropTargetLocation.None;
int targetIndex = -1;
int targetSubIndex = 0;
if (this.CanDropOnBackground)
{
location = DropTargetLocation.Background;
}
// Which item is the mouse over?
// If it is not over any item, it's over the background.
ListViewHitTestInfo info = this.ListView.HitTest(pt.X, pt.Y);
if (info.Item != null && this.CanDropOnItem)
{
location = DropTargetLocation.Item;
targetIndex = info.Item.Index;
if (info.SubItem != null && this.CanDropOnSubItem)
{
targetSubIndex = info.Item.SubItems.IndexOf(info.SubItem);
}
}
// Check to see if the mouse is "between" rows.
// ("between" is somewhat loosely defined)
if (this.CanDropBetween && this.ListView.GetItemCount() > 0)
{
// If the mouse is over an item, check to see if it is near the top or bottom
if (location == DropTargetLocation.Item)
{
if (pt.Y - SMALL_VALUE <= info.Item.Bounds.Top)
{
location = DropTargetLocation.AboveItem;
}
if (pt.Y + SMALL_VALUE >= info.Item.Bounds.Bottom)
{
location = DropTargetLocation.BelowItem;
}
}
else
{
// Is there an item a little below the mouse?
// If so, we say the drop point is above that row
info = this.ListView.HitTest(pt.X, pt.Y + SMALL_VALUE);
if (info.Item != null)
{
targetIndex = info.Item.Index;
location = DropTargetLocation.AboveItem;
}
else
{
// Is there an item a little above the mouse?
info = this.ListView.HitTest(pt.X, pt.Y - SMALL_VALUE);
if (info.Item != null)
{
targetIndex = info.Item.Index;
location = DropTargetLocation.BelowItem;
}
}
}
}
args.DropTargetLocation = location;
args.DropTargetIndex = targetIndex;
args.DropTargetSubItemIndex = targetSubIndex;
}
