public void SubscribeToDragStart(Action <DragActions> callback)
{
_grid.MouseDown += (sender, args) =>
{
if (args.Button != MouseButtons.Left)
{
return;
}
var index = _grid.HitTest(args.X, args.Y);
var rowIndex = index.RowIndex;
if (rowIndex == -1)
{
return;
}
//var selectedRows = _grid.SelectedRows;
DragActions subject;
var selectedRows = _grid.SelectedRows.Cast <DataGridViewRow>().ToArray();
if (selectedRows.Select(v => v.Index).Contains(rowIndex))
{
// our hit test includes selection.
// drag entire selection
subject = DragActions.CreateRequest(selectedRows
.Select(r => r.DataBoundItem as ActionDisplay)
.Select(a => a.Model));
}
else
{
var display = (ActionDisplay)_grid.Rows[index.RowIndex].DataBoundItem;
subject = DragActions.CreateRequest(new[] { display.Model });
}
callback(subject);
DoDragDrop(subject.Request, DragDropEffects.Move);
};
}
void StartDrag(DragActions obj)
{
_bus.Enqueue(new UI.DragStarted(new ActionDragManager(obj.Request, obj.Actions, _bus)));
}
public void RegisterDragEvents(DragActions dragAction)
{
this.dragActions.Add(dragAction);
}
public void DeregisterDragEvents(DragActions dragAction)
{
this.dragActions.Remove(dragAction);
}
public extern static void SetDestination(IntPtr widget, DefaultDestination defaultDestination, IntPtr targets, int targetCount, DragActions actions);
public void DeregisterDragEvents(DragActions dragAction)
{
this.dragActions.Remove(dragAction);
}
public void RegisterDragEvents(DragActions dragAction)
{
this.dragActions.Add(dragAction);
}