private void ShowPaneIndicators(FrameworkElement targetElement)
{
Debug.Assert(targetElement != null);
if (_paneDockIndicators != null && _paneDockIndicators.Target == targetElement)
{
return;
}
HidePaneIndicators();
// The visible drop target buttons are determined by the DockStrategy.
// For DockAnchorPanes only the inside button is visible.
bool isAnchorPane = targetElement is DockAnchorPane;
_paneDockIndicators = new PaneIndicators(targetElement)
{
AllowDockLeft = !isAnchorPane && CanDock(DockHelper.GetViewModel <IDockPane>(targetElement), DockPosition.Left),
AllowDockTop = !isAnchorPane && CanDock(DockHelper.GetViewModel <IDockPane>(targetElement), DockPosition.Top),
AllowDockRight = !isAnchorPane && CanDock(DockHelper.GetViewModel <IDockPane>(targetElement), DockPosition.Right),
AllowDockBottom = !isAnchorPane && CanDock(DockHelper.GetViewModel <IDockPane>(targetElement), DockPosition.Bottom),
AllowDockInside = CanDock(DockHelper.GetViewModel <IDockPane>(targetElement), DockPosition.Inside),
};
_paneDockIndicators.Show();
}
private void ShowBorderDockIndicators()
{
Debug.Assert(_dockControl != null);
if (_borderDockIndicators == null)
{
// The visible drop target buttons are determined by the DockStrategy.
_borderDockIndicators = new BorderIndicators(_dockControl)
{
AllowDockInside = false,
AllowDockLeft = CanDock(null, DockPosition.Left),
AllowDockTop = CanDock(null, DockPosition.Top),
AllowDockRight = CanDock(null, DockPosition.Right),
AllowDockBottom = CanDock(null, DockPosition.Bottom),
};
_borderDockIndicators.Show();
}
// Bring border DockIndicators to front, otherwise they might be behind the
// previews (semi-transparent rectangles) of the pane DockIndicators.
var hWnd = new WindowInteropHelper(_borderDockIndicators).Handle;
Win32.SetWindowPos(hWnd, IntPtr.Zero, 0, 0, 0, 0, SetWindowPosFlags.SWP_NOMOVE | SetWindowPosFlags.SWP_NOSIZE | SetWindowPosFlags.SWP_SHOWWINDOW | SetWindowPosFlags.SWP_NOACTIVATE);
// Alternative:
//_borderDockIndicators.Topmost = true;
//_borderDockIndicators.Topmost = false;
}
private void HidePaneIndicators()
{
if (_paneDockIndicators != null)
{
_paneDockIndicators.Close();
_paneDockIndicators = null;
}
}
private void HideBorderDockIndicators()
{
if (_borderDockIndicators != null)
{
_borderDockIndicators.Close();
_borderDockIndicators = null;
}
}
private static bool HasResult(DockIndicatorOverlay dockIndicators)
{
return(dockIndicators != null && dockIndicators.Result != DockPosition.None);
}
