BehaviorsAndTriggers.xaml.cs

using System;
using Xamarin.Forms;
using Xamarin.Forms.Internals;

namespace Xamarin.Forms.Controls
{
	[Preserve(AllMembers = true)]
	public partial class BehaviorsAndTriggers : ContentPage
	{
		public BehaviorsAndTriggers()
		{
			InitializeComponent();
		}
	}

	[Preserve(AllMembers = true)]
	public class Throb : TriggerAction<VisualElement>
	{
		bool _horizontal;

		public Throb(bool horizontal)
		{
			_horizontal = horizontal;
		}

		protected override async void Invoke(VisualElement sender)
		{
			for (var i = 0; i < 5; i++)
			{
				await sender.TranslateTo(_horizontal ? -5 : 0, !_horizontal ? -5 : 0, 25);
				await sender.TranslateTo(_horizontal ? 5 : 0, !_horizontal ? 5 : 0, 25);
			}
			await sender.TranslateTo(0, 0, 25);
		}
	}

	[Preserve(AllMembers = true)]
	public class HThrob : Throb
	{
		[Preserve]
		public HThrob()
			: base(true)
		{
		}
	}

	[Preserve(AllMembers = true)]
	public class VThrob : Throb
	{
		public VThrob() : base(false)
		{
		}
	}

	[Preserve(AllMembers = true)]
	public class StopItBehavior : Behavior<Button>
	{
		protected override void OnAttachedTo(Button bindable)
		{
			base.OnAttachedTo(bindable);
			bindable.Clicked += OnClicked;
		}

		protected override void OnDetachingFrom(Button bindable)
		{
			bindable.Clicked -= OnClicked;
			base.OnDetachingFrom(bindable);
		}

		void OnClicked(object sender, EventArgs e)
		{
			var button = (Button)sender;
			button.Text = "Don't do this again";
			button.IsEnabled = false;
		}
	}
}