protected override void OnClosed(EventArgs e)
{
ReleaseMouseCapture();
DockContainer.Focus();
var dc = DraggedItem as DockControl;
var dp = DraggedItem as DockPane;
// Tidy up tab buttons
if (dc?.TabButton is TabButton tb)
{
tb.Visibility = Visibility.Visible;
}
if (m_ghost_button.TabStrip != null)
{
m_ghost_button.TabStrip.Buttons.Remove(m_ghost_button);
}
// Commit the move on successful close
if (DialogResult == true)
{
// Preserve the active content
var active = DockContainer.ActiveContent;
// No address means float in a new floating window
if (DropAddress.Length == 0)
{
// Float the dragged content
if (dc != null)
{
dc.IsFloating = true;
}
// Or, float the dragged dock pane
if (dp != null)
{
dc = dp.VisibleContent;
dp.IsFloating = true;
}
// Set the location of the floating window to the last position of the ghost
if (dc?.TreeHost is FloatingWindow fw)
{
fw.Left = Ghost.Left;
fw.Top = Ghost.Top;
}
}
// Otherwise dock the dragged item at the dock address
else if (TreeHost != null)
{
// Ensure a pane exists at the drop address
var target = TreeHost.Root.DockPane(DropAddress);
var index = DropIndex ?? target.TabStrip.Buttons.Count;
var content =
dc != null ? new[] { dc } :
dp != null?dp.AllContent.ToArray() :
throw new Exception();
// Dock the dragged item(s)
foreach (var c in content)
{
// If we're dropping the item within the same pane, the index needs to be
// adjusted if the original index is less than the new index.
if (c.DockPane == target && c.TabButton != null && c.DockPane.TabStrip.Buttons.IndexOf(c.TabButton) < index)
{
--index;
}
// Even if 'dc.DockPane == target' remove and re-add 'c' because we might be
// changing the order
c.DockPane = null;
target.AllContent.Insert(index++, c);
}
}
// Restore the active content
DockContainer.ActiveContent = active;
Debug.Assert(DockContainer.ValidateTree());
}
Ghost = null !;
IndCrossLg = null !;
IndCrossSm = null !;
IndLeft = null !;
IndTop = null !;
IndRight = null !;
IndBottom = null !;
base.OnClosed(e);
}
