private IBioLinkExtension InstantiateExtension(Type type)
{
ConstructorInfo ctor = type.GetConstructor(new Type[] { });
IBioLinkExtension extension = null;
if (ctor != null)
{
extension = Activator.CreateInstance(type) as IBioLinkExtension;
}
else
{
throw new Exception(String.Format("Could not load extension {0} - no default constructor", type.FullName));
}
return(extension);
}
private void LoadPlugins(PluginAction pluginAction, params string[] paths)
{
using (new CodeTimer("Plugin loader")) {
FileSystemTraverser t = new FileSystemTraverser();
NotifyProgress("Searching for extensions...", -1, ProgressEventType.Start);
List <Type> extensionTypes = new List <Type>();
foreach (string pathelement in paths)
{
string path = pathelement;
string filterexpr = ".*[.]dll$";
if (path.Contains("|"))
{
path = pathelement.Substring(0, pathelement.IndexOf("|"));
filterexpr = pathelement.Substring(pathelement.IndexOf("|") + 1);
}
Regex regex = new Regex(filterexpr, RegexOptions.IgnoreCase);
FileSystemTraverser.Filter filter = (fileinfo) => {
return(regex.IsMatch(fileinfo.Name));
};
Logger.Debug("LoadPlugins: Scanning: {0}", path);
t.FilterFiles(path, filter, fileinfo => { ProcessAssembly(fileinfo, extensionTypes); }, false);
}
NotifyProgress("Loading plugins...", 0, ProgressEventType.Start);
int i = 0;
foreach (Type type in extensionTypes)
{
try {
Logger.Debug("Instantiating type {0}", type.FullName);
IBioLinkExtension extension = InstantiateExtension(type);
if (extension != null)
{
if (extension is IBioLinkPlugin)
{
IBioLinkPlugin plugin = extension as IBioLinkPlugin;
Logger.Debug("Initializing Plugin {0}...", plugin.Name);
plugin.InitializePlugin(User, this, this.ParentWindow);
Logger.Debug("Integrating Plugin...", plugin.Name);
// Allow the consumer to process this plugin...
if (pluginAction != null)
{
pluginAction(plugin);
}
}
_extensions.Add(extension);
double percentComplete = ((double)++i / (double)extensionTypes.Count) * 100.0;
NotifyProgress(extension.Name, percentComplete, ProgressEventType.Update);
}
DoEvents();
} catch (Exception ex) {
GlobalExceptionHandler.Handle(ex);
}
}
// Fire an event signalling plugin loading is complete, and all plugins have been initialized
if (this.PluginsLoaded != null)
{
PluginsLoaded(this);
}
NotifyProgress("Plugin loading complete", 100, ProgressEventType.End);
}
}