/// <summary> /// Adds a listener to the inner list of listeners. /// </summary> /// <param name="rootObjectHashCode"><paramref name="listener"/>s root object hash code.</param> /// <param name="listener">The listener to add.</param> internal static void AddListener(int rootObjectHashCode, NestedMarkupExtension listener) { if (listener == null) { return; } lock (listenersLock) { // Do we have a listeners list for this root object yet, if not add it. if (!listeners.ContainsKey(rootObjectHashCode)) { listeners[rootObjectHashCode] = new List <WeakReference>(); } // Check, if this listener already was added. foreach (var wr in listeners[rootObjectHashCode].ToList()) { var targetReference = wr.Target; if (targetReference == null) { listeners[rootObjectHashCode].Remove(wr); } else if (targetReference == listener) { return; } else { var existing = (NestedMarkupExtension)targetReference; var targets = existing.GetTargetObjectsAndProperties(); foreach (var target in targets) { if (listener.IsConnected(target)) { listeners[rootObjectHashCode].Remove(wr); break; } } } } // Add it now. listeners[rootObjectHashCode].Add(new WeakReference(listener)); } }
/// <summary> /// Adds a listener to the inner list of listeners. /// </summary> /// <param name="listener">The listener to add.</param> internal static void AddListener(NestedMarkupExtension listener) { if (listener == null) { return; } lock (listenersLock) { // Check, if this listener already was added. foreach (var wr in listeners.ToList()) { var targetReference = wr.Target; if (targetReference == null) { listeners.Remove(wr); } else if (targetReference == listener) { return; } else { var existing = (NestedMarkupExtension)targetReference; var targets = existing.GetTargetObjectsAndProperties(); foreach (var target in targets) { if (listener.IsConnected(target)) { listeners.Remove(wr); break; } } } } // Add it now. listeners.Add(new WeakReference(listener)); } }