AddinLoader.cs

// <copyright file="AddinLoader.cs" company="Rene Windegger">
// Copyright (c) 2013 Rene Windegger. All rights reserved.
// </copyright>
// <author>Rene Windegger</author>
// <date>23.12.2013</date>
// <summary>Implements the addin loader class</summary>
namespace wtf.windegger.addinframework
{
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Reflection;
    using System.Text;
    using System.Threading.Tasks;

    /// <summary> An addin loader. </summary>
    /// <remarks> Rene Windegger, 23.12.2013. </remarks>
    /// <typeparam name="PluginIdentifier"> Type of the plugin identifier. </typeparam>
    /// <typeparam name="PluginType"> Type of the plugin type. </typeparam>
    public class AddinLoader<PluginIdentifier, PluginType>
        where PluginIdentifier : AddinIdentifierAttribute
    {
        /// <summary> Identifier for the plugin. </summary>
        private readonly Type m_PluginIdentifier;
        /// <summary> Type of the plugin. </summary>
        private readonly Type m_PluginType;

        /// <summary> The addins. </summary>
        private List<Addin<PluginType>> m_Addins = new List<Addin<PluginType>>();

        /// <summary> Gets the addins. </summary>
        /// <value> The addins. </value>
        public List<Addin<PluginType>> Addins
        {
            get
            {
                return m_Addins;
            }
            private set
            {
                m_Addins = value;
            }
        }

        /// <summary> Initializes a new instance of the AddinLoader class. </summary>
        /// <remarks> Rene Windegger, 23.12.2013. </remarks>
        public AddinLoader()
        {
            m_PluginIdentifier = typeof(PluginIdentifier);
            m_PluginType = typeof(PluginType);
        }

        /// <summary> Loads addins from file. </summary>
        /// <remarks> Rene Windegger, 23.12.2013. </remarks>
        /// <param name="fileName"> Filename of the file. </param>
        public void LoadAddinsFromFile(string fileName)
        {
            Assembly currentAssembly = Assembly.LoadFrom(fileName);
            LoadAddinsFromAssembly(currentAssembly);
        }

        /// <summary> Loads addins from assembly. </summary>
        /// <remarks> Rene Windegger, 23.12.2013. </remarks>
        /// <param name="assembly"> The assembly. </param>
        public void LoadAddinsFromAssembly(Assembly assembly)
        {
            PluginIdentifier[] Attributes = (PluginIdentifier[])assembly.GetCustomAttributes(m_PluginIdentifier, false);
            foreach (PluginIdentifier i in Attributes)
            {
                m_Addins.Add(new Addin<PluginType>(assembly.GetType(i.ClassName)));
            }
        }
    }
}