private void AssignToLayer(LayerTreeElement[] elements, LayerTreeElement layer)
{
if (layer == null || layer.Type != LayerTreeViewElementType.Layer || elements.Length == 0)
{
return;
}
foreach (var element in elements)
{
if (element.Type == LayerTreeViewElementType.Item)
{
var oldLayer = element.ReParent(layer) as LayerTreeElement;
var bh = element.Item as MonoBehaviour;
if (oldLayer != null)
{
_layers[oldLayer.Name].Remove(bh);
}
_layers[layer.Name].Add(bh);
}
}
Rebuild();
ItemsAssigned?.Invoke(layer, elements);
}
/// <summary>
/// Deletes a layer using a TreeElement ID used within TreeRoot
/// </summary>
/// <param name="id">the id of the layer TreeElement</param>
/// <remarks>
/// Cannot delete the last layer, table need at least one layer
/// Will transfer all items from the deleted layer to the first layer of the table
/// </remarks>
public void DeleteLayer(int id)
{
var layerItem = TreeRoot.Find(id);
if (layerItem != null && layerItem.Type == LayerTreeViewElementType.Layer)
{
if (_layers.Keys.Count == 1)
{
EditorUtility.DisplayDialog("Visual Pinball", "Cannot delete all layers.", "Close");
return;
}
if (!EditorUtility.DisplayDialog("Visual Pinball", $"Do you really want to delete layer {layerItem.Name} ?", "Yes", "No"))
{
return;
}
// Keep layer's items and put them in the first layer
var items = layerItem.GetChildren();
_layers.Remove(layerItem.LayerName);
if (items.Length > 0)
{
var firstLayer = TreeRoot.GetChildren(e => e.Type == LayerTreeViewElementType.Layer)[0];
foreach (var item in items)
{
item.ReParent(firstLayer);
}
Rebuild();
ItemsAssigned?.Invoke(firstLayer, items);
}
else
{
Rebuild();
}
}
}