ESRI.ArcGIS.Client.Toolkit.EditorWidget.AttachLayerEventHandlers C# (CSharp) Méthode

        private void AttachLayerEventHandlers(GraphicsLayer layer)
        {
            if (layer != null)
            {
                if (!layer.IsInitialized)
                    layer.Initialized += Layer_Initialized;
                else
                    UpdateVisibleButtons();
                layer.PropertyChanged += Layer_PropertyChanged;
                if (layer is FeatureLayer)
                    layer.MouseLeftButtonDown += Layer_MouseLeftButtonDown;
            }
        }

        private static void OnMapPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            Map          oldMap = e.OldValue as Map;
            Map          newMap = e.NewValue as Map;
            EditorWidget widget = (EditorWidget)d;

            if (widget != null)
            {
                widget.editor.Map = newMap;
                if (oldMap != null && oldMap.Layers != null)
                {
                    List <GraphicsLayer> oldGraphicsLayers = new List <GraphicsLayer>();
                    foreach (Layer layer in oldMap.Layers)
                    {
                        if (layer is GraphicsLayer)
                        {
                            oldGraphicsLayers.Add(layer as GraphicsLayer);
                        }
                    }
                    widget.DetachLayerEventHandlers(oldGraphicsLayers);
                    oldMap.Layers.CollectionChanged -= widget.Layers_CollectionChanged;
                }
                if (newMap != null && newMap.Layers != null)
                {
                    newMap.Layers.CollectionChanged += widget.Layers_CollectionChanged;
                    widget.AttachLayerEventHandlers(widget.editor.GraphicsLayers);
                }
            }
        }