private void ExportsChanged(object sender, ExportChangedEventArgs e)
{
var temp = new List<IExport>();
foreach (ExportMetadata exportMetadata in
e.Removed.Where(exportMetadata => !temp.Contains(exportMetadata.Export)))
{
_exports.Remove(exportMetadata.Export);
temp.Add(exportMetadata.Export);
}
temp.Clear();
foreach (
ExportMetadata exportMetadata in e.Added.Where(exportMetadata => !temp.Contains(exportMetadata.Export)))
{
var attr = exportMetadata.Export.ImplementType.GetCustomAttribute<ExportLevelAttribute>();
if(attr == null)
attr = exportMetadata.Export.ImplementType.Assembly.GetCustomAttribute<ExportLevelAttribute>();
_exports.Register(exportMetadata.Export, attr == null ? 0 : attr.Level);
temp.Add(exportMetadata.Export);
}
}
/// <summary>
/// The on exports changed.
/// </summary>
/// <param name="e">
/// The e.
/// </param>
protected virtual void OnExportsChanged(ExportChangedEventArgs e)
{
Contract.Requires<ArgumentNullException>(e != null, "e");
EventHandler<ExportChangedEventArgs> handler = ExportsChanged;
if (handler != null) handler(this, e);
}