Tidy up NodeNetworkInterface, replacing &[] root network arguments with methods for the document network (#2393)

* Replace `.selected_nodes(&[])` with `.selected_nodes_in_nested_network()` and `.selected_nodes()`

* Replace `.network(&[])` with `.document_network()` and `.nested_network()`

* Replace `.network_metadata(&[])` with `.document_network_metadata()`

editor/src/messages/tool/common_functionality/compass_rose.rs

@@ -19,7 +19,7 @@ impl CompassRose {
 		layer_transform * bounds_transform
 	}
 	pub fn refresh_position(&mut self, document: &DocumentMessageHandler) {
-		let selected_nodes = document.network_interface.selected_nodes(&[]).unwrap();
+		let selected_nodes = document.network_interface.selected_nodes();
 		let mut layers = selected_nodes.selected_visible_and_unlocked_layers(&document.network_interface);
 
 		let Some(first) = layers.next() else { return };

editor/src/messages/tool/common_functionality/graph_modification_utils.rs

@@ -409,7 +409,7 @@ impl<'a> NodeGraphLayer<'a> {
 			.skip(1)// Skip self
 			.take_while(|node_id| !self.network_interface.is_layer(node_id,&[]))
 			.find(|node_id| self.network_interface.reference(node_id,&[]).is_some_and(|reference| *reference == Some(node_name.to_string())))
-			.and_then(|node_id| self.network_interface.network(&[]).unwrap().nodes.get(&node_id).map(|node| &node.inputs))
+			.and_then(|node_id| self.network_interface.document_network().nodes.get(&node_id).map(|node| &node.inputs))
 	}
 
 	/// Find a specific input of a node within the layer's primary flow

editor/src/messages/tool/common_functionality/pivot.rs

@@ -45,7 +45,7 @@ impl Pivot {
 
 	/// Recomputes the pivot position and transform.
 	fn recalculate_pivot(&mut self, document: &DocumentMessageHandler) {
-		let selected_nodes = document.network_interface.selected_nodes(&[]).unwrap();
+		let selected_nodes = document.network_interface.selected_nodes();
 		let mut layers = selected_nodes.selected_visible_and_unlocked_layers(&document.network_interface);
 		let Some(first) = layers.next() else {
 			// If no layers are selected then we revert things back to default
@@ -67,8 +67,7 @@ impl Pivot {
 			// If more than one layer is selected we use the AABB with the mean of the pivots
 			let xy_summation = document
 				.network_interface
-				.selected_nodes(&[])
-				.unwrap()
+				.selected_nodes()
 				.selected_visible_and_unlocked_layers(&document.network_interface)
 				.map(|layer| graph_modification_utils::get_viewport_pivot(layer, &document.network_interface))
 				.reduce(|a, b| a + b)
@@ -104,12 +103,7 @@ impl Pivot {
 
 	/// Sets the viewport position of the pivot for all selected layers.
 	pub fn set_viewport_position(&self, position: DVec2, document: &DocumentMessageHandler, responses: &mut VecDeque<Message>) {
-		for layer in document
-			.network_interface
-			.selected_nodes(&[])
-			.unwrap()
-			.selected_visible_and_unlocked_layers(&document.network_interface)
-		{
+		for layer in document.network_interface.selected_nodes().selected_visible_and_unlocked_layers(&document.network_interface) {
 			let transform = Self::get_layer_pivot_transform(layer, document);
 			// Only update the pivot when computed position is finite.
 			if transform.matrix2.determinant().abs() <= f64::EPSILON {

editor/src/messages/tool/common_functionality/resize.rs

@@ -37,7 +37,7 @@ impl Resize {
 			return None;
 		}
 
-		if !document.network_interface.network(&[]).unwrap().nodes.contains_key(&layer.to_node()) {
+		if !document.network_interface.document_network().nodes.contains_key(&layer.to_node()) {
 			self.layer.take();
 			return None;
 		}