private void HandleDrag(DragEventArgs e)
{
DragLayer.UpdateAdornerPosition(e);
if (e.Data.GetDataPresent(DataFormats.FileDrop))
{
e.Effects = DragDropEffects.Link;
}
else
{
DataSourcesControl.Instance?.HandleDrag(e);
}
e.Handled = true;
}
private void PartDataSourcesOnMouseMove(object sender, MouseEventArgs e)
{
if (DragLayer.ShouldStartDrag(e))
{
IDataSourceViewModel source = SelectedItem;
TreeViewItem treeViewItem = SelectedTreeViewItem;
if (treeViewItem.IsMouseOver && ((DataSourcesViewModel)DataContext).CanBeDragged(source))
{
DragLayer.DoDragDrop(source, treeViewItem, DragDropEffects.Move);
}
}
}
public void HandleDrag(DragEventArgs e)
{
DragLayer.UpdateAdornerPosition(e);
DropInfo dropInfo;
if (IsValidDrop(e, out dropInfo))
{
DragLayer.AdornDropTarget(dropInfo);
e.Effects = DragDropEffects.Move;
e.Handled = true;
}
}
private void OnMouseMove(object sender, MouseEventArgs e)
{
if (DragLayer.ShouldStartDrag(e))
{
// Get the item under the mouse
var relativePosition = e.GetPosition(this);
var element = InputHitTest(relativePosition) as FrameworkElement;
var uiElement = element.FindFirstAncestorWithName("PART_WidgetFactory");
var factory = uiElement?.DataContext as WidgetFactoryViewModel;
if (factory != null)
{
DragLayer.DoDragDrop(factory, uiElement, DragDropEffects.Copy);
}
}
}
public void PartDataSourcesOnDrop(object sender, DragEventArgs e)
{
DropInfo dropInfo;
if (IsValidDrop(e, out dropInfo))
{
var vm = DataContext as DataSourcesViewModel;
vm?.OnDropped(dropInfo.Source.ViewModel,
dropInfo.Target.ViewModel,
dropInfo.Type);
e.Handled = true;
}
DragLayer.RemoveArrangeAdorner();
DragLayer.RemoveDropAdorner();
}
private void OnMouseMove(object sender, MouseEventArgs e)
{
DragLayer.OnMouseMove(e);
}