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Thread-safe Silverlight Cairngorm

, 20 Oct 2008 CDDL
Some code changes and improvements that make the Silverlight Cairngorm thread-safe
SilverlightCairngorm
Business
Command
Control
Model
Properties
SilverlightCairngormDemo
SilverlightCairngorm
Business
Command
Control
Model
Properties
SilverlightCairngormDemo
Business
Command
Control
Model
Properties
View
SilverlightCairngormDemoWeb
App_Data
ClientBin
SilverlightCairngormDemo.xap
SilverlightCairngormDemoTestPage.aspx.exclude
SilverlightCairngormDemo.suo
SilverlightCairngormDemo.suo
using System;
using System.Collections.Generic;
using System.Text;

namespace SilverlightCairngorm.Control
{
    /// <summary>
    /// Used to dispatch system events, by raising an event that the 
    /// controller class subscribes to every time any system event is 
    /// raised.
	/// Client code has no need to use this class. (internal class)
    /// </summary>
    internal class CairngormEventDispatcher
    {
		private static readonly CairngormEventDispatcher _instance = new CairngormEventDispatcher();

		// Explicit static constructor to tell C# compiler
		// not to mark type as beforefieldinit
		static CairngormEventDispatcher()
		{
		}

		/// <summary>
		/// private constructor
		/// </summary>
		private CairngormEventDispatcher()
		{
		}

		/// <summary>
		/// Returns the single instance of the dispatcher
		/// </summary>
		/// <returns>single instance of the dispatcher</returns>
		public static CairngormEventDispatcher Instance { get { return _instance; } }

		/// <summary>
        /// The subscriber to a system event must accept as argument
        /// the CairngormEvent raised (within a CairngormEventArgs\
        /// object)
        /// </summary>
        /// <param name="sender">Unused</param>
		/// <param name="args">a CairngormEventArgs object, containing the raised event object</param>
        public delegate void EventDispatchDelegate(object sender, CairngormEventArgs args);
		/// <summary>
        /// The single event raised whenever a Cairngorm system event occurs
        /// </summary>
		public event EventDispatchDelegate EventDispatched = delegate { };

        /// <summary>
        /// dispatchEvent raises a normal .net event, containing the 
        /// instance of the CairngormEvent raised - to be handled by
        /// the Controller Class
        /// </summary>
        /// <param name="cairngormEvent">the raised Cairngorm Event</param>
        public void dispatchEvent(CairngormEvent cairngormEvent)
        {
			CairngormEventArgs args = new CairngormEventArgs(cairngormEvent);
			EventDispatched(null, args);
        }
    }
}

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This article, along with any associated source code and files, is licensed under The Common Development and Distribution License (CDDL)

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Modesty Zhang
Technical Lead
United States United States
https://github.com/modesty

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