Initial Commit

Common/Auxiliary/ValueStore.cs

@@ -0,0 +1,106 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.ComponentModel;
+using System.Diagnostics;
+
+namespace Microsoft.Research.DynamicDataDisplay
+{
+	public sealed class ValueStore : CustomTypeDescriptor, INotifyPropertyChanged
+	{
+		public ValueStore(params string[] propertiesNames)
+		{
+			foreach (var propertyName in propertiesNames)
+			{
+				this[propertyName] = "";
+			}
+		}
+
+		private Dictionary<string, object> cache = new Dictionary<string, object>();
+
+		public object this[string propertyName]
+		{
+			get { return cache[propertyName]; }
+			set { SetValue(propertyName, value); }
+		}
+
+		public ValueStore SetValue(string propertyName, object value)
+		{
+			cache[propertyName] = value;
+			PropertyChanged.Raise(this, propertyName);
+
+			return this;
+		}
+
+		private PropertyDescriptorCollection collection;
+		public override PropertyDescriptorCollection GetProperties()
+		{
+			PropertyDescriptor[] propertyDescriptors = new PropertyDescriptor[cache.Count];
+			var keys = cache.Keys.ToArray();
+			for (int i = 0; i < keys.Length; i++)
+			{
+				propertyDescriptors[i] = new ValueStorePropertyDescriptor(keys[i]);
+			}
+
+			collection = new PropertyDescriptorCollection(propertyDescriptors);
+			return collection;
+		}
+
+		private sealed class ValueStorePropertyDescriptor : PropertyDescriptor
+		{
+			private readonly string name;
+
+			public ValueStorePropertyDescriptor(string name)
+				: base(name, null)
+			{
+				this.name = name;
+			}
+
+			public override bool CanResetValue(object component)
+			{
+				return false;
+			}
+
+			public override Type ComponentType
+			{
+				get { return typeof(ValueStore); }
+			}
+
+			public override object GetValue(object component)
+			{
+				ValueStore store = (ValueStore)component;
+				return store[name];
+			}
+
+			public override bool IsReadOnly
+			{
+				get { return false; }
+			}
+
+			public override Type PropertyType
+			{
+				get { return typeof(string); }
+			}
+
+			public override void ResetValue(object component)
+			{
+			}
+
+			public override void SetValue(object component, object value)
+			{
+			}
+
+			public override bool ShouldSerializeValue(object component)
+			{
+				return false;
+			}
+		}
+
+		#region INotifyPropertyChanged Members
+
+		public event PropertyChangedEventHandler PropertyChanged;
+
+		#endregion
+	}
+}