private void selectedLayer(Layer layer) {
scene.setActiveLayer(layer.id);
layerUpButton.setDisabled(false);
layerDownButton.setDisabled(false);
ImmutableArray<Layer> layers = scene.getLayers();
int index = layers.indexOf(layer, true);
if (index == 0) layerUpButton.setDisabled(true);
if (index == layers.size() - 1) layerDownButton.setDisabled(true);
}
private void rebuildLayersTable() {
deselectAll();
Array<Actor> actors = new Array<>(layersTable.getChildren());
layersTable.clearChildren();
for (Layer layer : scene.getLayers()) {
LayerItem item = getItemForLayer(actors, layer);
if (item == null) item = new LayerItem(layer);
item.update();
layersTable.add(item).expandX().fillX().row();
if (layer == scene.getActiveLayer()) item.select();
}
if (scene.getLayers().size() == 1) {
layerDownButton.setDisabled(true);
layerUpButton.setDisabled(true);
layerRemoveButton.setDisabled(true);
} else layerRemoveButton.setDisabled(false);
}