public void ActivatingNewViewDeactivatesCurrent()
{
IRegion region = new SingleActiveRegion();
var view = new object();
region.Add(view);
region.Activate(view);
Assert.IsTrue(region.ActiveViews.Contains(view));
var view2 = new object();
region.Add(view2);
region.Activate(view2);
Assert.IsFalse(region.ActiveViews.Contains(view));
Assert.IsTrue(region.ActiveViews.Contains(view2));
}
/// <summary>
/// Creates a new <see cref="IRegion"/> and registers it in the default <see cref="IRegionManager"/>
/// attaching to it a <see cref="DialogActivationBehavior"/> behavior.
/// </summary>
/// <param name="owner">The owner of the Popup.</param>
/// <param name="regionName">The name of the <see cref="IRegion"/>.</param>
/// <remarks>
/// This method would typically not be called directly, instead the behavior
/// should be set through the Attached Property <see cref="CreatePopupRegionWithNameProperty"/>.
/// </remarks>
public static void RegisterNewPopupRegion(DependencyObject owner, string regionName)
{
// Creates a new region and registers it in the default region manager.
// Another option if you need the complete infrastructure with the default region behaviors
// is to extend DelayedRegionCreationBehavior overriding the CreateRegion method and create an
// instance of it that will be in charge of registering the Region once a RegionManager is
// set as an attached property in the Visual Tree.
IRegionManager regionManager = ServiceLocator.Current.GetInstance<IRegionManager>();
if (regionManager != null)
{
IRegion region = new SingleActiveRegion();
DialogActivationBehavior behavior;
behavior = new WindowDialogActivationBehavior();
behavior.HostControl = owner;
region.Behaviors.Add(DialogActivationBehavior.BehaviorKey, behavior);
regionManager.Regions.Add(regionName, region);
}
}