void MoveDraggedItemToNewControl(MouseButtonEventArgs e)
{
bool ctrlDown = Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl);
if (ctrlDown || this.controlUnderCursor == null || this.hitTestSpot == null)
{
var pos = draggedItem.PointToScreenIndependent(e.GetPosition(draggedItem));
var originalContent = draggedItem.Content as FrameworkElement;
Size size = new Size(300, 200);
if (originalContent != null)
{
size = new Size(originalContent.ActualWidth, originalContent.ActualHeight);
}
var w = sourceSplitTabsControl.CreateFloatingHost();
w.Left = pos.X;
w.Top = pos.Y;
w.Width = size.Width;
w.Height = size.Height;
w.SplitTabsControl.Loaded += (s, e2) =>
{
sourceSplitTabsControl.RemoveItemFromControl(this.draggedItem);
w.SplitTabsControl.AddItemToControl(this.draggedItem, w.SplitTabsControl.RootNode.TabControl, true);
};
w.Show();
return;
}
SplitTabsControl destSplitTabsControl = this.controlUnderCursor.FindParent <SplitTabsControl>();
if (sourceSplitTabsControl == null || destSplitTabsControl == null)
{
Debug.Fail("How does a tab control not live in a split tabs control parent?");
return;
}
// Before removing the dragged item (which presumably has focus), set focus on the destination
// tab control. Otherwise we end up removing the focused element from the tree, which tends to
// confuse the WPF focus manager.
destSplitTabsControl.Focus();
if (this.hitTestSpot.IsTabbed)
{
if (this.controlUnderCursor != this.sourceControl)
{
sourceSplitTabsControl.RemoveItemFromControl(this.draggedItem);
destSplitTabsControl.AddItemToControl(this.draggedItem, this.controlUnderCursor, true);
}
return;
}
var newNode = destSplitTabsControl.SplitNode(this.hitTestSpot.DestinationNode, this.hitTestSpot.Dock);
if (newNode != null)
{
sourceSplitTabsControl.RemoveItemFromControl(this.draggedItem);
destSplitTabsControl.AddItemToControl(this.draggedItem, newNode.TabControl, true);
}
}
