using Windows.UI.Xaml;

using Microsoft.Xaml.Interactivity;

using Windows.ApplicationModel;

using System;

namespace ReactiveUI.Blend

{

public class Behavior<T> : DependencyObject, IBehavior where T: DependencyObject

{

public virtual void Attach(DependencyObject associatedObject)

{

if (associatedObject == this.AssociatedObject || DesignMode.DesignModeEnabled) {

return;

}

if (this.AssociatedObject != null) {

throw new InvalidOperationException("Cannot attach multiple objects.");

}

AssociatedObject = associatedObject as T;

OnAttached();

}

public virtual void Detach()

{

OnDetaching();

}

protected virtual void OnAttached()

{

}

protected virtual void OnDetaching()

{

}

public T AssociatedObject { get; private set; }

DependencyObject IBehavior.AssociatedObject {

get { return this.AssociatedObject; }

}

}

}