public static TypeDescriptionProvider GetProvider (object instance)
{
if (instance == null)
throw new ArgumentNullException ("instance");
TypeDescriptionProvider ret = null;
lock (componentDescriptionProvidersLock) {
LinkedList <TypeDescriptionProvider> plist;
WeakObjectWrapper instanceWrapper = new WeakObjectWrapper (instance);
if (componentDescriptionProviders.TryGetValue (instanceWrapper, out plist) && plist.Count > 0)
ret = plist.Last.Value;
instanceWrapper = null;
}
if (ret == null)
ret = GetProvider (instance.GetType ());
if (ret == null)
return new DefaultTypeDescriptionProvider ();
else
return new WrappedTypeDescriptionProvider (ret);
}
public static void RemoveProvider (TypeDescriptionProvider provider, object instance)
{
if (provider == null)
throw new ArgumentNullException ("provider");
if (instance == null)
throw new ArgumentNullException ("instance");
//bool removed = false;
lock (componentDescriptionProvidersLock) {
LinkedList <TypeDescriptionProvider> plist;
WeakObjectWrapper instanceWrapper = new WeakObjectWrapper (instance);
if (componentDescriptionProviders.TryGetValue (instanceWrapper, out plist) && plist.Count > 0) {
RemoveProvider (provider, plist);
//removed = true;
}
instanceWrapper = null;
}
var refreshed = Refreshed;
if (refreshed != null)
refreshed (new RefreshEventArgs (instance));
}
public static void AddProvider (TypeDescriptionProvider provider, object instance)
{
if (provider == null)
throw new ArgumentNullException ("provider");
if (instance == null)
throw new ArgumentNullException ("instance");
lock (componentDescriptionProvidersLock) {
LinkedList <TypeDescriptionProvider> plist;
WeakObjectWrapper instanceWrapper = new WeakObjectWrapper (instance);
if (!componentDescriptionProviders.TryGetValue (instanceWrapper, out plist)) {
plist = new LinkedList <TypeDescriptionProvider> ();
componentDescriptionProviders.Add (new WeakObjectWrapper (instance), plist);
}
plist.AddLast (provider);
instanceWrapper = null;
Refresh (instance);
}
}
