Initial Commit

Charts/Axes/Integer/CollectionLabelProvider.cs

@@ -0,0 +1,107 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Windows;
+using System.Windows.Controls;
+using System.Collections.ObjectModel;
+using System.Collections.Specialized;
+using System.Diagnostics.CodeAnalysis;
+
+namespace Microsoft.Research.DynamicDataDisplay.Charts.Axes
+{
+	public class CollectionLabelProvider<T> : LabelProviderBase<int>
+	{
+		private IList<T> collection;
+
+		[SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
+		public IList<T> Collection
+		{
+			get { return collection; }
+			set
+			{
+				if (value == null)
+					throw new ArgumentNullException("value");
+
+				if (collection != value)
+				{
+					DetachCollection();
+
+					collection = value;
+
+					AttachCollection();
+
+					RaiseChanged();
+				}
+			}
+		}
+
+		#region Collection changed
+
+		private void AttachCollection()
+		{
+			INotifyCollectionChanged observableCollection = collection as INotifyCollectionChanged;
+			if (observableCollection != null)
+			{
+				observableCollection.CollectionChanged += OnCollectionChanged;
+			}
+		}
+
+		private void OnCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
+		{
+			RaiseChanged();
+		}
+
+		private void DetachCollection()
+		{
+			INotifyCollectionChanged observableCollection = collection as INotifyCollectionChanged;
+			if (observableCollection != null)
+			{
+				observableCollection.CollectionChanged -= OnCollectionChanged;
+			}
+		} 
+
+		#endregion
+
+		/// <summary>
+		/// Initializes a new instance of the <see cref="CollectionLabelProvider&lt;T&gt;"/> class with empty labels collection.
+		/// </summary>
+		public CollectionLabelProvider() { }
+
+		public CollectionLabelProvider(IList<T> collection)
+			: this()
+		{
+			Collection = collection;
+		}
+
+		public override UIElement[] CreateLabels(ITicksInfo<int> ticksInfo)
+		{
+			var ticks = ticksInfo.Ticks;
+
+			UIElement[] res = new UIElement[ticks.Length];
+
+			var tickInfo = new LabelTickInfo<int> { Info = ticksInfo.Info };
+
+			for (int i = 0; i < res.Length; i++)
+			{
+				int tick = ticks[i];
+				tickInfo.Tick = tick;
+
+				if (0 <= tick && tick < collection.Count)
+				{
+					string text = collection[tick].ToString();
+					res[i] = new TextBlock
+					{
+						Text = text,
+						ToolTip = text
+					};
+				}
+				else
+				{
+					res[i] = null;
+				}
+			}
+			return res;
+		}
+	}
+}