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A Flexible Plugin System

, 3 Sep 2008 LGPL3
A generic plugin system used to load and manage plugins
fadd-15373.zip
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xunit.dll
Examples
Plugins
ExampleApplication.Shared
Properties
ExampleApplication
Properties
ExamplePlugin.Shared
Properties
ExamplePlugin
Properties
Fadd.Globalization.Yaml
fadd.snk
Properties
Tests
fadd
Commands
Net
Tests
fadd.snk
Globalization
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Logging
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Properties
Tests
Validation
using System;
using System.Reflection;

namespace Fadd.Plugins
{
    /// <summary>
    /// Arguments for <see cref="PluginLoadedHandler{T}"/>
    /// </summary>
    /// <typeparam name="T">Implementation of IPlugin</typeparam>
    public class PluginLoadedHandlerEventArgs<T> : EventArgs where T : class, IPlugin
    {
        private readonly T _plugin;
        private readonly Assembly _assembly;
        private readonly PluginTypeInfo _typeInfo;

        /// <summary>
        /// Called when a plugin have been loaded.
        /// </summary>
        /// <param name="plugin">Plugin being loaded.</param>
        /// <param name="assembly">Assembly that the plugin exist in.</param>
        /// <param name="typeInfo">information about the plugin</param>
        /// <remarks>Plugin have not been started yet.</remarks>
        public PluginLoadedHandlerEventArgs(T plugin, Assembly assembly, PluginTypeInfo typeInfo)
        {
            _plugin = plugin;
            _assembly = assembly;
            _typeInfo = typeInfo;
        }

        /// <summary>
        /// Plugin being loaded
        /// </summary>
        public T Plugin
        {
            get { return _plugin; }
        }

        /// <summary>
        /// Assembly that the plugin exist in
        /// </summary>
        public Assembly Assembly
        {
            get { return _assembly; }
        }

        /// <summary>
        /// information about the plugin
        /// </summary>
        public PluginTypeInfo TypeInfo
        {
            get { return _typeInfo; }
        }
    }



    /// <summary>
    /// Invoked when a plugin have been loaded into the system.
    /// </summary>
    ///<param name="source">PluginManager that loaded the plugin.</param>
    ///<param name="args">Plugin information.</param>
    public delegate void PluginLoadedHandler<T>(object source, PluginLoadedHandlerEventArgs<T> args) where T : class, IPlugin;
}

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License

This article, along with any associated source code and files, is licensed under The GNU Lesser General Public License (LGPLv3)

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About the Author

jgauffin
Founder Gauffin Interactive AB
Sweden Sweden
Founder of OneTrueError, a .NET service which captures, analyzes and provide possible solutions for exceptions.
 
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