ios-samples/MonoCatalogSample/controls.cs

//
// Controls sample in C#
//

using System;
using MonoTouch.UIKit;
using MonoTouch.Foundation;
using System.Drawing;

public partial class ControlsViewController : UITableViewController {

	//
	// This datasource describes how the UITableView should render the
	// contents.   We have a number of sections determined by the
	// samples in our container class, and 2 rows per section:
	//
	//   Row 0: the actual styled button
	//   Row 1: the text information about the button
	//
	class DataSource : UITableViewDataSource {
		ControlsViewController cvc;
		static NSString kDisplayCell_ID = new NSString ("DisplayCellID");
		static NSString kSourceCell_ID = new NSString ("SourceCellID");
		
		public DataSource (ControlsViewController cvc)
		{
			this.cvc = cvc;
		}

		public override int NumberOfSections (UITableView tableView)
		{
			return cvc.samples.Length;
		}

		public override string TitleForHeader (UITableView tableView, int section)
		{
			return cvc.samples [section].Title;
		}

		public override int RowsInSection (UITableView tableView, int section)
		{
			return 2;
		}

		public override UITableViewCell GetCell (UITableView tableView, NSIndexPath indexPath)
		{
			UITableViewCell cell;

			if (indexPath.Row == 0){
				cell = tableView.DequeueReusableCell (kDisplayCell_ID);
				if (cell == null){
					cell = new UITableViewCell (UITableViewCellStyle.Default, kDisplayCell_ID);
					cell.SelectionStyle = UITableViewCellSelectionStyle.None;
				} else {
					// The cell is being recycled, remove the old content
					
					UIView viewToRemove = cell.ContentView.ViewWithTag (kViewTag);
					if (viewToRemove != null)
						viewToRemove.RemoveFromSuperview ();
				}
				cell.TextLabel.Text = cvc.samples [indexPath.Section].Label;
				cell.ContentView.AddSubview (cvc.samples [indexPath.Section].Control);
			} else {
				cell = tableView.DequeueReusableCell (kSourceCell_ID);
				if (cell == null){
					// Construct the cell with reusability (the second argument is not null)
					cell = new UITableViewCell (UITableViewCellStyle.Default, kSourceCell_ID);
					cell.SelectionStyle = UITableViewCellSelectionStyle.None;
					var label = cell.TextLabel;
					
					label.Opaque = false;
					label.TextAlignment = UITextAlignment.Center;
					label.TextColor = UIColor.Gray;
					label.Lines = 2;
					label.HighlightedTextColor = UIColor.Black;
					label.Font = UIFont.SystemFontOfSize (12f);
				}
				cell.TextLabel.Text = cvc.samples [indexPath.Section].Source;
			}

			return cell;
		}
	}

	class TableDelegate : UITableViewDelegate {
		public override float GetHeightForRow (UITableView tableView, NSIndexPath indexPath)
		{
			// First row is always 50 pixes, second row 38
			return indexPath.Row == 0 ? 50f : 38f;
		}
	}

	// Load our definition from the NIB file
	public ControlsViewController () : base ("ControlsViewController", null)
	{
	}

	// For tagging our embedded controls at cell recylce time.
	const int kViewTag = 1;

	UIControl SwitchControl ()
	{
		var sw = new UISwitch (new RectangleF (198f, 12f, 94f, 27f)){
			BackgroundColor = UIColor.Clear,
			Tag = kViewTag
		};
		sw.ValueChanged += delegate {
			// The enum variant causes a full-aot crash
			Console.WriteLine ("New state: {0}", (int) sw.State);
		};
		return sw;
	}
	
	UIControl SliderControl ()
	{
		var slider = new UISlider (new RectangleF (174f, 12f, 120f, 7f)){
			BackgroundColor = UIColor.Clear,
			MinValue = 0f,
			MaxValue = 100f,
			Continuous = true,
			Value = 50f,
			Tag = kViewTag
		};
		slider.ValueChanged += delegate {
			Console.WriteLine ("New value {0}", slider.Value);
		};
		return slider;
	}

	UIControl CustomSliderControl ()
	{
		var cslider = new UISlider (new RectangleF (174f, 12f, 120f, 7f)){
			BackgroundColor = UIColor.Clear,
			MinValue = 0f,
			MaxValue = 100f,
			Continuous = true,
			Value = 50f,
			Tag = kViewTag
		};
		
		var left = UIImage.FromFile ("orangeslide.png");
		left = left.StretchableImage (10, 0);
		var right = UIImage.FromFile ("yellowslide.png");
		right = right.StretchableImage (10, 0);

		cslider.SetThumbImage (UIImage.FromFile ("slider_ball.png"), UIControlState.Normal);
		cslider.SetMinTrackImage (left, UIControlState.Normal);
		cslider.SetMaxTrackImage (right, UIControlState.Normal);
		
		cslider.ValueChanged += delegate {
			Console.WriteLine ("New value {0}", cslider.Value);
		};
		return cslider;
	}

	UIControl PageControl ()
	{
		var page = new UIPageControl (new RectangleF (120f, 14f, 178f, 20f)){
			BackgroundColor = UIColor.Gray,
			Pages = 10,
			Tag = kViewTag
		};

		page.TouchUpInside += delegate {
			Console.WriteLine ("Current page: {0}", page.CurrentPage);
		};

		return page;
	}

	UIView ProgressIndicator ()
	{
		var pind = new UIActivityIndicatorView (new RectangleF (265f, 12f, 40f, 40f)){
			ActivityIndicatorViewStyle = UIActivityIndicatorViewStyle.Gray,
			AutoresizingMask = UIViewAutoresizing.FlexibleLeftMargin |
				UIViewAutoresizing.FlexibleRightMargin |
				UIViewAutoresizing.FlexibleTopMargin |
				UIViewAutoresizing.FlexibleBottomMargin,
			Tag = kViewTag
		};

		pind.StartAnimating ();
		pind.SizeToFit ();
		
		return pind;
	}

	UIView ProgressBar ()
	{
		return new UIProgressView (new RectangleF (126f, 20f, 160f, 24f)){
			Style = UIProgressViewStyle.Default,
			Progress = 0.5f,
			Tag = kViewTag
		};
	}
		
	struct ControlSample {
		public string Title, Label, Source;
		public UIView Control;

		public ControlSample (string t, string l, string s, UIView c)
		{
			Title = t;
			Label = l;
			Source = s;
			Control = c;
		}
	}

	ControlSample [] samples;

	public override void ViewDidLoad ()
	{
		base.ViewDidLoad ();
		Title = "Controls";

		samples = new ControlSample [] {
			new ControlSample ("UISwitch", "Standard Switch", "controls.cs: SwitchControl ()", SwitchControl ()),
			new ControlSample ("UISlider", "Standard Slider", "controls.cs: SliderControl ()", SliderControl ()),
			new ControlSample ("UISlider", "Customized Slider", "controls.cs: CustomSliderControl ()", CustomSliderControl ()),
			new ControlSample ("UIPageControl", "Ten Pages", "controls.cs: PageControl ()", PageControl ()),
			new ControlSample ("UIActivityIndicatorView", "Style Gray", "controls.cs: ProgressIndicator ()", ProgressIndicator ()),
			new ControlSample ("UIProgressView", "Style Default", "controls.cs: ProgressBar ()", ProgressBar ()),
		};

		TableView.DataSource = new DataSource (this);
		TableView.Delegate = new TableDelegate ();
	}

	
}