/// <summary>
/// Searches the Application's Startup Directory for Plugins
/// </summary>
//public void FindPlugins()
//{
// //FindPlugins(AppDomain.CurrentDomain.BaseDirectory);
//}
/// <summary>
/// Searches the passed Path for Plugins
/// </summary>
/// <param name="Path">Directory to search for Plugins in</param>
public List <string> FindPlugins(string Path)
{
List <string> plugins = new List <string>();
try
{
//Go through all the files in the plugin directory
foreach (string fileOn in Directory.GetFiles(Path))
{
FileInfo file = new FileInfo(fileOn);
//Preliminary check, must be .dll
if (!file.Extension.Equals(".dll"))
{
continue;
}
Assembly pluginAssembly = Assembly.LoadFrom(Path + "\\" + file.Name);
//Next we'll loop through all the Types found in the assembly
foreach (Type pluginType in pluginAssembly.GetTypes())
{
if (!pluginType.IsPublic && pluginType.IsAbstract)
{
continue;
}
//Gets a type object of the interface we need the plugins to match
Type typeInterface = pluginType.GetInterface("PluginInterface.IPlugin", true);
if (typeInterface == null)
{
continue;
}
AvailablePlugin newPlugin = new AvailablePlugin();
newPlugin.AssemblyPath = Path;
newPlugin.Instance = (IPlugin)Activator.CreateInstance(pluginAssembly.GetType(pluginType.ToString()));
//Set the Plugin's host to this class which inherited IPluginHost
//newPlugin.Instance.Host = this;
plugins.Add(newPlugin.Instance.ShortName);
//cleanup a bit
newPlugin = null;
typeInterface = null; //Mr. Clean
}
}
}
catch (Exception ex)
{
Debug.Assert(false, ex.Message);
}
return(plugins);
}
private void AddPlugin(string FileName, UserSession session, AppInfo settings)
{
//Create a new assembly from the plugin file we're adding..
Assembly pluginAssembly = Assembly.LoadFrom(FileName);
//Next we'll loop through all the Types found in the assembly
foreach (Type pluginType in pluginAssembly.GetTypes())
{
if (pluginType.IsPublic) //Only look at public types
{
if (!pluginType.IsAbstract) //Only look at non-abstract types
{
//Gets a type object of the interface we need the plugins to match
Type typeInterface = pluginType.GetInterface("PluginInterface.IPlugin", true);
//Make sure the interface we want to use actually exists
if (typeInterface != null)
{
//Create a new available plugin since the type implements the IPlugin interface
AvailablePlugin newPlugin = new AvailablePlugin();
//Set the filename where we found it
newPlugin.AssemblyPath = FileName;
//Create a new instance and store the instance in the collection for later use
//We could change this later on to not load an instance.. we have 2 options
//1- Make one instance, and use it whenever we need it.. it's always there
//2- Don't make an instance, and instead make an instance whenever we use it, then close it
//For now we'll just make an instance of all the plugins
newPlugin.Instance = (IPlugin)Activator.CreateInstance(pluginAssembly.GetType(pluginType.ToString()));
//Set the Plugin's host to this class which inherited IPluginHost
newPlugin.Instance.Host = this;
try
{
//Call the initialization sub of the plugin
newPlugin.Instance.Initialize(session, settings);
}
catch { }
//Add the new plugin to our collection here
this.colAvailablePlugins.Add(newPlugin);
//cleanup a bit
newPlugin = null;
}
typeInterface = null; //Mr. Clean
}
}
}
pluginAssembly = null; //more cleanup
}
