/// <summary>
/// Ensures that the selected control is removed (OnLeave) if it is a descendant of this control.
/// </summary>
/// <returns>True, if the focused control was nested in this control, otherwise false.</returns>
public bool LeaveNestedFocusedControl()
{
if (IsAttached)
{
IContainer container = this as IContainer;
if (container != null)
{
if (Container == null || Container.Host == null)
{
return(false);
}
FluidControl selected = IsAttached ? Container.Host.FocusedControl : null;
if (selected != null)
{
if (container != null && selected.IsDescendantOf(container))
{
if (IsAttached)
{
Container.Host.FocusedControl = this.Selectable ? this : null;
}
return(true);
}
}
}
}
return(false);
}
/// <summary>
/// Removes the focus of the selected control, if this control is a parent of the selected control.
/// </summary>
private void LeaveDescendant()
{
FluidControl selected = Container.Host.FocusedControl;
if (selected != null)
{
if (selected.IsDescendantOf(this))
{
Container.Host.FocusedControl = this;
}
}
}
