private void UpdateLayerSource(int index, ILayer layer)
{
if (layer == null)
{
throw new Exception("UpdateLayerSource para newlayer invalid");
}
VLayer oldlyrcanvas = this.Children[index] as VLayer;
if (oldlyrcanvas == null)
{
throw new Exception("UpdateLayerSource para child is not VLayer");
}
Binding binding = new Binding("Objects")
{
Source = layer
};
BindingOperations.SetBinding(oldlyrcanvas, VLayer.ObjectsSourceProperty, binding);
Binding bdname = new Binding("Name")
{
Source = layer
};
BindingOperations.SetBinding(oldlyrcanvas, FrameworkElement.NameProperty, binding);
}
private void InsertLayer(int index, ILayer layer)
{
if (layer == null)
{
throw new Exception("InsertLayer para layer invalid");
}
VLayer laycanvas = new VLayer();
this.Children.Insert(index, laycanvas);
UpdateLayerSource(index, layer);
}
private static void OnObjectSourceChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
VLayer layer = (VLayer)d;
layer.Children.Clear();
if (layer.ObjectsSource != null)
{
layer.ObjectsSource.OnItemAdded += layer.ObjectsSource_OnItemAdded;
layer.ObjectsSource.OnItemMoved += layer.ObjectsSource_OnItemMoved;
layer.ObjectsSource.OnItemRemoved += layer.ObjectsSource_OnItemRemoved;
layer.ObjectsSource.OnItemReplaced += layer.ObjectsSource_OnItemReplaced;
layer.ObjectsSource.OnCleared += layer.ObjectsSource_OnCleared;
for (int i = 0; i < layer.ObjectsSource.Count; i++)
{
layer.InsertObject(i, layer.ObjectsSource[i]);
}
}
}