Initial Commit

Common/Auxiliary/EventExtensions.cs

@@ -0,0 +1,140 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Diagnostics;
+using System.ComponentModel;
+using System.Collections.Specialized;
+using System.Windows;
+using Microsoft.Research.DynamicDataDisplay.Common;
+
+namespace Microsoft.Research.DynamicDataDisplay
+{
+	public static class EventExtensions
+	{
+		[DebuggerStepThrough]
+		[DebuggerHidden]
+		public static void Raise<T>(this EventHandler<T> @event, object sender, T args) where T : EventArgs
+		{
+			if (@event != null)
+			{
+				@event(sender, args);
+			}
+		}
+
+		[DebuggerStepThrough]
+		[DebuggerHidden]
+		public static void Raise(this EventHandler @event, object sender)
+		{
+			if (@event != null)
+			{
+				@event(sender, EventArgs.Empty);
+			}
+		}
+
+		[DebuggerStepThrough]
+		[DebuggerHidden]
+		public static void Raise(this EventHandler @event, object sender, EventArgs args)
+		{
+			if (@event != null)
+			{
+				@event(sender, args);
+			}
+		}
+
+		[DebuggerStepThrough]
+		[DebuggerHidden]
+		public static void Raise(this PropertyChangedEventHandler @event, object sender, string propertyName)
+		{
+			if (@event != null)
+			{
+				@event(sender, new PropertyChangedEventArgs(propertyName));
+			}
+		}
+
+		/// <summary>
+		/// Raises the specified event with Reset action.
+		/// </summary>
+		/// <param name="event">The event.</param>
+		/// <param name="sender">The sender.</param>
+		[DebuggerStepThrough]
+		[DebuggerHidden]
+		public static void Raise(this NotifyCollectionChangedEventHandler @event, object sender)
+		{
+			if (@event != null)
+			{
+				@event(sender, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset));
+			}
+		}
+
+		[DebuggerStepThrough]
+		[DebuggerHidden]
+		public static void Raise(this NotifyCollectionChangedEventHandler @event, object sender, NotifyCollectionChangedAction action)
+		{
+			if (@event != null)
+			{
+				@event(sender, new NotifyCollectionChangedEventArgs(action));
+			}
+		}
+
+		[DebuggerStepThrough]
+		[DebuggerHidden]
+		public static void Raise(this NotifyCollectionChangedEventHandler @event, object sender, NotifyCollectionChangedEventArgs e)
+		{
+			if (e == null)
+				throw new ArgumentNullException("e");
+
+			if (@event != null)
+			{
+				@event(sender, e);
+			}
+		}
+
+		[DebuggerStepThrough]
+		[DebuggerHidden]
+		public static void RaiseRoutedEvent(this UIElement sender, RoutedEvent routedEvent)
+		{
+			sender.RaiseEvent(new RoutedEventArgs(routedEvent));
+		}
+
+		/// <summary>
+		/// Raises the specified value changed event.
+		/// </summary>
+		/// <typeparam name="T"></typeparam>
+		/// <typeparam name="TValue">The type of the value.</typeparam>
+		/// <param name="event">The event.</param>
+		/// <param name="sender">The sender of event.</param>
+		/// <param name="prevValue">The previous value.</param>
+		/// <param name="currValue">The current value.</param>
+		[DebuggerStepThrough]
+		[DebuggerHidden]
+		public static void Raise<TValue>(this EventHandler<ValueChangedEventArgs<TValue>> @event, object sender, TValue prevValue, TValue currValue)
+		{
+			if (@event != null)
+			{
+				ValueChangedEventArgs<TValue> args = new ValueChangedEventArgs<TValue>(prevValue, currValue);
+				@event(sender, args);
+			}
+		}
+
+		/// <summary>
+		/// Raises the specified value changed event.
+		/// </summary>
+		/// <typeparam name="T"></typeparam>
+		/// <typeparam name="TValue">The type of the value.</typeparam>
+		/// <param name="event">The event.</param>
+		/// <param name="sender">The sender of event.</param>
+		/// <param name="prevValue">The previous value.</param>
+		/// <param name="currValue">The current value.</param>
+		[DebuggerStepThrough]
+		[DebuggerHidden]
+		public static void Raise<TValue>(this EventHandler<ValueChangedEventArgs<TValue>> @event, object sender, object prevValue, object currValue)
+		{
+			if (@event != null)
+			{
+				ValueChangedEventArgs<TValue> args = new ValueChangedEventArgs<TValue>((TValue)prevValue, (TValue)currValue);
+				@event(sender, args);
+			}
+		}
+	}
+}