using System;
using System.Collections.Generic;
using System.Linq;
using Xamarin.Forms.Internals;

namespace Xamarin.Forms.Controls
{
	[Preserve (AllMembers = true)]
	public class CellForceUpdateSizeGalleryPage : TabbedPage
	{
		public class ViewCellPage : ContentPage
		{
			[Preserve (AllMembers = true)]
			public class MyViewCell : ViewCell
			{
				public MyViewCell ()
				{
					var image = new Image {
						Source = ImageSource.FromFile ("crimson.jpg"),
						BackgroundColor = Color.Gray,
						HeightRequest = 50,
						VerticalOptions = LayoutOptions.Fill,
						HorizontalOptions = LayoutOptions.Fill
					};

					var button = new Button { Text = "+" };
					button.Clicked += (object sender, EventArgs e) =>
					{
						image.HeightRequest = image.Height + 100;
						ForceUpdateSize ();
					};

					Tapped += (object sender, EventArgs e) =>
					{
						image.HeightRequest = image.Height - 100;
						ForceUpdateSize ();
					};

					View = new StackLayout { Orientation = StackOrientation.Horizontal, Children = { image, button } };
				}
			}

			public ViewCellPage ()
			{
				var listview = new ListView {
					HasUnevenRows = true,
				};
				var items = Enumerable.Range (0, 10);
				listview.ItemsSource = items;
				listview.ItemTemplate = new DataTemplate (typeof (MyViewCell));
				Content = listview;
				Title = "View Cell";
			}
		}

		public class ImageCellPage : ContentPage
		{
			[Preserve (AllMembers = true)]
			public class MyImageCell : ImageCell
			{
				public MyImageCell ()
				{
					ImageSource = ImageSource.FromFile ("crimson.jpg");
					Height = 20;
					Command = new Command (() =>
					{
						Height += 20;
						ForceUpdateSize ();
					});
				}
			}
			public ImageCellPage ()
			{
				var listview = new ListView {
					HasUnevenRows = true,
				};
				var items = Enumerable.Range (0, 10);
				listview.ItemsSource = items;
				listview.ItemTemplate = new DataTemplate (typeof (MyImageCell));
				Content = listview;
				Title = "Image Cell";
			}
		}

		public class TextCellPage : ContentPage
		{
			[Preserve (AllMembers = true)]
			public class MyTextCell : TextCell
			{
				public MyTextCell ()
				{
					Text = "I am a TextCell, short and stout.";
					Height = 20;
					Command = new Command (() =>
					{
						Height += 20;
						ForceUpdateSize ();
					});
				}
			}

			public TextCellPage ()
			{
				var listview = new ListView {
					HasUnevenRows = true,
				};
				var items = Enumerable.Range (0, 10);
				listview.ItemsSource = items;
				listview.ItemTemplate = new DataTemplate (typeof (MyTextCell));
				Content = listview;
				Title = "Text Cell";
			}
		}

		public class EntryCellPage : ContentPage
		{
			[Preserve (AllMembers = true)]
			public class MyEntryCell : EntryCell
			{
				public MyEntryCell ()
				{
					Text = "I am an EntryCell, short and stout.";
					Height = 20;
					Tapped += (object sender, EventArgs e) =>
					{
						Height += 20;
						ForceUpdateSize ();
					};
					Completed += (object sender, EventArgs e) =>
					{
						Height -= 20;
						ForceUpdateSize ();
					};
				}
			}

			public EntryCellPage ()
			{
				var listview = new ListView {
					HasUnevenRows = true,
				};
				var items = Enumerable.Range (0, 10);
				listview.ItemsSource = items;
				listview.ItemTemplate = new DataTemplate (typeof (MyEntryCell));
				Content = listview;
				Title = "Entry Cell";
			}
		}

		public class SwitchCellPage : ContentPage
		{
			[Preserve (AllMembers = true)]
			public class MySwitchCell : SwitchCell
			{
				public MySwitchCell ()
				{
					Text = "I am a SwitchCell, short and stout.";
					Height = 20;
					Tapped += (object sender, EventArgs e) =>
					{
						Height += 20;
						ForceUpdateSize ();
					};
					OnChanged += (object sender, ToggledEventArgs e) =>
					{
						Height -= 20;
						ForceUpdateSize ();
					};
				}
			}

			public SwitchCellPage ()
			{
				var listview = new ListView {
					HasUnevenRows = true,
				};
				var items = Enumerable.Range (0, 10);
				listview.ItemsSource = items;
				listview.ItemTemplate = new DataTemplate (typeof (MySwitchCell));
				Content = listview;
				Title = "Switch Cell";
			}
		}

		public CellForceUpdateSizeGalleryPage ()
		{
			Children.Add (new ViewCellPage ());
			Children.Add (new ImageCellPage ());
			Children.Add (new TextCellPage ());
			Children.Add (new EntryCellPage ());
			Children.Add (new SwitchCellPage ());
		}
	}
}