/// <summary>
/// Ensures that <see cref="ActiveViewManager"/> assigned to host object.
/// </summary>
/// <param name="d">Host control.</param>
/// <returns><see cref="ActiveViewManager"/> that belongs to host controls.</returns>
private static ActiveViewManager EnsureActiveViewManagerAssigned(DependencyObject d)
{
var activeViewManager = GetActiveViewManager(d);
if (activeViewManager == null)
{
var regionWrapper = GetObservableRegion(d);
activeViewManager = new ActiveViewManager(d, regionWrapper);
SetActiveViewManager(d, activeViewManager);
}
return activeViewManager;
}
/// <summary>
/// Sets value to ActiveViewManager property.
/// </summary>
/// <param name="o">Host control.</param>
/// <param name="value"><see cref="ActiveViewManager"/> that belongs to host controls.</param>
public static void SetActiveViewManager(DependencyObject o, ActiveViewManager value)
{
o.SetValue(ActiveViewManagerProperty, value);
}
