public override Control GetVisualizerWidget (ObjectValue val)
		{
			string value = val.Value;
			Gdk.Color col = new Gdk.Color (85, 85, 85);

			if (!val.IsNull && (val.TypeName == "string" || val.TypeName == "char[]"))
				value = '"' + GetString (val) + '"';
			if (DebuggingService.HasInlineVisualizer (val))
				value = DebuggingService.GetInlineVisualizer (val).InlineVisualize (val);

			var label = new Gtk.Label ();
			label.Text = value;
			var font = label.Style.FontDescription.Copy ();

			if (font.SizeIsAbsolute) {
				font.AbsoluteSize = font.Size - 1;
			} else {
				font.Size -= (int)(Pango.Scale.PangoScale);
			}

			label.ModifyFont (font);
			label.ModifyFg (StateType.Normal, col);
			label.SetPadding (4, 4);

			if (label.SizeRequest ().Width > 500) {
				label.WidthRequest = 500;
				label.Wrap = true;
				label.LineWrapMode = Pango.WrapMode.WordChar;
			} else {
				label.Justify = Gtk.Justification.Center;
			}

			if (label.Layout.GetLine (1) != null) {
				label.Justify = Gtk.Justification.Left;
				var line15 = label.Layout.GetLine (15);
				if (line15 != null) {
					label.Text = value.Substring (0, line15.StartIndex).TrimEnd ('\r', '\n') + "\n…";
				}
			}

			label.Show ();

			return label;
		}

		public PinnedWatchWidget (TextEditor editor, PinnedWatch watch)
		{
			objectValue = watch.Value;
			Editor = editor;
			Watch = watch;

			valueTree = new ObjectValueTreeView ();
			valueTree.AllowAdding = false;
			valueTree.AllowEditing = true;
			valueTree.AllowPinning = true;
			valueTree.HeadersVisible = false;
			valueTree.CompactView = true;
			valueTree.PinnedWatch = watch;
			if (objectValue != null)
				valueTree.AddValue (objectValue);
			
			valueTree.ButtonPressEvent += HandleValueTreeButtonPressEvent;
			valueTree.ButtonReleaseEvent += HandleValueTreeButtonReleaseEvent;
			valueTree.MotionNotifyEvent += HandleValueTreeMotionNotifyEvent;
			
			Gtk.Frame fr = new Gtk.Frame ();
			fr.ShadowType = Gtk.ShadowType.Out;
			fr.Add (valueTree);
			Add (fr);
			HandleEditorOptionsChanged (null, null);
			ShowAll ();
			//unpin.Hide ();
			Editor.EditorOptionsChanged += HandleEditorOptionsChanged;
			
			DebuggingService.PausedEvent += HandleDebuggingServicePausedEvent;
			DebuggingService.ResumedEvent += HandleDebuggingServiceResumedEvent;
		}

		public override Gtk.Widget GetVisualizerWidget (ObjectValue val)
		{
			var ops = DebuggingService.DebuggerSession.EvaluationOptions.Clone ();
			string file = Path.GetTempFileName ();
			Gdk.Pixbuf pixbuf;

			ops.AllowTargetInvoke = true;

			try {
				var pix = (RawValue) val.GetRawValue (ops);
				pix.CallMethod ("Save", file, "png");
				pixbuf = new Gdk.Pixbuf (file);
			} finally {
				File.Delete (file);
			}

			var sc = new Gtk.ScrolledWindow ();
			sc.ShadowType = Gtk.ShadowType.In;
			sc.HscrollbarPolicy = Gtk.PolicyType.Automatic;
			sc.VscrollbarPolicy = Gtk.PolicyType.Automatic;
			var image = new Gtk.Image (pixbuf);
			sc.AddWithViewport (image);
			sc.ShowAll ();
			return sc;
		}

		/// <summary>
		/// The provided value can have the following members:
		/// Type of the object: type of the exception
		/// Message: Message of the exception
		/// Instance: Raw instance of the exception
		/// StackTrace: an array of frames. Each frame must have:
		///     Value of the object: display text of the frame
		///     File: name of the file
		///     Line: line
		///     Col: column
		/// InnerException: inner exception, following the same format described above.
		/// </summary>
		public ExceptionInfo (ObjectValue exception)
		{
			this.exception = exception;
			if (exception.IsEvaluating || exception.IsEvaluatingGroup)
				exception.ValueChanged += HandleExceptionValueChanged;
				
		}

		string GetString (ObjectValue val)
		{
			var ops = DebuggingService.DebuggerSession.EvaluationOptions.Clone ();
			ops.AllowTargetInvoke = true;
			ops.ChunkRawStrings = true;
			if (val.TypeName == "string") {
				var rawString = val.GetRawValue (ops) as RawValueString;
				var length = rawString.Length;
				if (length > 0) {
					return rawString.Substring (0, Math.Min (length, 4096));
				} else {
					return "";
				}
			} else if (val.TypeName == "char[]") {
				var rawArray = val.GetRawValue (ops) as RawValueArray;
				var length = rawArray.Length;
				if (length > 0) {
					return new string (rawArray.GetValues (0, Math.Min (length, 4096)) as char[]);
				} else {
					return "";
				}

			} else {
				throw new InvalidOperationException ();
			}
		}

		public void Show (ObjectValue val)
		{
			value = val;
			visualizers = new List<ValueVisualizer> (DebuggingService.GetValueVisualizers (val));
			visualizers.Sort ((v1, v2) => string.Compare (v1.Name, v2.Name, StringComparison.CurrentCultureIgnoreCase));
			buttons = new List<ToggleButton> ();

			Gtk.Button defaultVis = null;

			for (int i = 0; i < visualizers.Count; i++) {
				var button = new ToggleButton ();
				button.Label = visualizers [i].Name;
				button.Toggled += OnComboVisualizersChanged;
				if (visualizers [i].IsDefaultVisualizer (val))
					defaultVis = button;
				hbox1.PackStart (button, false, false, 0);
				buttons.Add (button);
				button.CanFocus = false;
				button.Show ();
			}

			if (defaultVis != null)
				defaultVis.Click ();
			else if (buttons.Count > 0)
				buttons [0].Click ();

			if (val.IsReadOnly || !visualizers.Any (v => v.CanEdit (val))) {
				buttonCancel.Label = Gtk.Stock.Close;
				buttonSave.Hide ();
			}
		}

		public override bool CanVisualize (ObjectValue val)
		{
			switch (val.TypeName) {
			case "char[]": return true;
			case "string": return true;
			default: return false;
			}
		}

		static ObjectValue Create (IObjectValueSource source, ObjectPath path, string typeName)
		{
			ObjectValue ob = new ObjectValue ();
			ob.source = source;
			ob.path = path;
			ob.typeName = typeName;
			return ob;
		}

		public static void Show (ObjectValue val, Control widget, Gdk.Rectangle previewButtonArea)
		{
			DestroyWindow ();
			wnd = new PreviewVisualizerWindow (val, widget);
			wnd.ShowPopup (widget, previewButtonArea, PopupPosition.Left);
			wnd.Destroyed += HandleDestroyed;
			OnWindowShown (EventArgs.Empty);
		}

		static ObjectValue Create (IObjectValueSource source, ObjectPath path, string typeName)
		{
			var val = new ObjectValue ();
			val.typeName = typeName;
			val.source = source;
			val.path = path;
			return val;
		}

		public void UpdateValue (ObjectValue newValue)
		{
			try {
				callback.UpdateValue (newValue);
			} catch {
				// Ignore
			}
		}

//		PinWindow pinWindow;
//		TreeIter currentPinIter;
		
		public DebugValueWindow (Mono.TextEditor.TextEditor editor, int offset, StackFrame frame, ObjectValue value, PinnedWatch watch): base (Gtk.WindowType.Toplevel)
		{
			this.TypeHint = WindowTypeHint.PopupMenu;
			this.AllowShrink = false;
			this.AllowGrow = false;
			this.Decorated = false;

			TransientFor = (Gtk.Window) editor.Toplevel;
			
			// Avoid getting the focus when the window is shown. We'll get it when the mouse enters the window
			AcceptFocus = false;
			
			sw = new ScrolledWindow ();
			sw.HscrollbarPolicy = PolicyType.Never;
			sw.VscrollbarPolicy = PolicyType.Never;
			
			tree = new ObjectValueTreeView ();
			sw.Add (tree);
			ContentBox.Add (sw);
			
			tree.Frame = frame;
			tree.CompactView = true;
			tree.AllowAdding = false;
			tree.AllowEditing = true;
			tree.HeadersVisible = false;
			tree.AllowPinning = true;
			tree.RootPinAlwaysVisible = true;
			tree.PinnedWatch = watch;
			DocumentLocation location = editor.Document.OffsetToLocation (offset);
			tree.PinnedWatchLine = location.Line;
			tree.PinnedWatchFile = ((ExtensibleTextEditor)editor).View.ContentName;
			
			tree.AddValue (value);
			tree.Selection.UnselectAll ();
			tree.SizeAllocated += OnTreeSizeChanged;
			tree.PinStatusChanged += delegate {
				Destroy ();
			};
			
//			tree.MotionNotifyEvent += HandleTreeMotionNotifyEvent;
			
			sw.ShowAll ();
			
//			pinWindow = new PinWindow (this);
//			pinWindow.SetPinned (false);
//			pinWindow.ButtonPressEvent += HandlePinWindowButtonPressEvent;
			
			tree.StartEditing += delegate {
				Modal = true;
			};
			
			tree.EndEditing += delegate {
				Modal = false;
			};

			ShowArrow = true;
			Theme.CornerRadius = 3;
		}

		public bool StoreValue (ObjectValue val)
		{
			try {
				val.SetRawValue (textView.Buffer.Text);
			} catch {
				MonoDevelop.Ide.MessageService.ShowError ("Unable to set text");
			}
			return true;
		}

		public void Show (ObjectValue val)
		{
			value = val;
			visualizers = new List<IValueVisualizer> (DebuggingService.GetValueVisualizers (val));
			visualizers.Sort (delegate (IValueVisualizer v1, IValueVisualizer v2) {
				return v1.Name.CompareTo (v2.Name);
			});
			foreach (IValueVisualizer vis in visualizers)
				comboVisualizers.AppendText (vis.Name);
			comboVisualizers.Active = 0;
		}

		public override bool CanVisualize (ObjectValue val)
		{
			switch (val.TypeName) {
			case "System.IO.MemoryStream":
			case "Foundation.NSData":
			case "sbyte[]":
			case "byte[]":
				return true;
			default:
				return false;
			}
		}

		public static ObjectValue CreateObject (IObjectValueSource source, ObjectPath path, string typeName, EvaluationResult value, ObjectValueFlags flags, ObjectValue[] children)
		{
			ObjectValue ob = Create (source, path, typeName);
			ob.path = path;
			ob.flags = flags | ObjectValueFlags.Object;
			ob.value = value.Value;
			ob.displayValue = value.DisplayValue;
			if (children != null) {
				ob.children = new List<ObjectValue> ();
				ob.children.AddRange (children);
			}
			return ob;
		}

		void PrintValue (ObjectValue val)
		{
			string result = val.Value;
			if (string.IsNullOrEmpty (result)) {
				if (val.IsNotSupported)
					result = GettextCatalog.GetString ("Expression not supported.");
				else if (val.IsError || val.IsUnknown)
					result = GettextCatalog.GetString ("Evaluation failed.");
				else
					result = string.Empty;
			}
			view.WriteOutput (result);
		}

		public void Show (ObjectValue val)
		{
			value = val;
			visualizers = new List<IValueVisualizer> (DebuggingService.GetValueVisualizers (val));
			visualizers.Sort (delegate (IValueVisualizer v1, IValueVisualizer v2) {
				return v1.Name.CompareTo (v2.Name);
			});
			foreach (IValueVisualizer vis in visualizers)
				comboVisualizers.AppendText (vis.Name);
			comboVisualizers.Active = 0;
			if (val.IsReadOnly || visualizers.Count == 0) {
				buttonCancel.Hide ();
				buttonOk.Label = Gtk.Stock.Close;
			}
		}

		public override bool IsDefaultVisualizer (ObjectValue val)
		{
			switch (val.TypeName) {
			case "MonoTouch.Foundation.NSData":
			case "MonoMac.Foundation.NSData":
			case "System.IO.MemoryStream":
			case "Foundation.NSData":
			case "sbyte[]":
			case "byte[]":
				return true;
			case "char[]": 
			case "string":
			default:
				return false;
			}
		}

		public DebugValueWindow (TextEditor editor, int offset, StackFrame frame, ObjectValue value, PinnedWatch watch) : base (Gtk.WindowType.Toplevel)
		{
			this.TypeHint = WindowTypeHint.PopupMenu;
			this.AllowShrink = false;
			this.AllowGrow = false;
			this.Decorated = false;

			TransientFor = (Gtk.Window) ((Gtk.Widget)editor).Toplevel;
			// Avoid getting the focus when the window is shown. We'll get it when the mouse enters the window
			AcceptFocus = false;

			sw = new ScrolledWindow ();
			sw.HscrollbarPolicy = PolicyType.Never;
			sw.VscrollbarPolicy = PolicyType.Never;

			tree = new ObjectValueTreeView ();
			sw.Add (tree);
			ContentBox.Add (sw);

			tree.Frame = frame;
			tree.CompactView = true;
			tree.AllowAdding = false;
			tree.AllowEditing = true;
			tree.HeadersVisible = false;
			tree.AllowPinning = true;
			tree.RootPinAlwaysVisible = true;
			tree.PinnedWatch = watch;
			var location = editor.OffsetToLocation (offset);
			tree.PinnedWatchLine = location.Line;
			tree.PinnedWatchFile = editor.FileName;

			tree.AddValue (value);
			tree.Selection.UnselectAll ();
			tree.SizeAllocated += OnTreeSizeChanged;
			tree.PinStatusChanged += OnPinStatusChanged;

			sw.ShowAll ();

			tree.StartEditing += OnStartEditing;
			tree.EndEditing += OnEndEditing;

			ShowArrow = true;
			Theme.CornerRadius = 3;
		}