Add layer node chains, import/export edge connectors, and refactor graph editing to go thru a NodeNetworkInterface (#1794)

* WIP: NodeNetworkInterface

* Organize ModifyInputsContext to use network interface

* Improve ClickTarget and Position state

* Rework ClickTarget state

* Continue fixing NodeGraphMessageHandler

* Restructure network_metadata

* Final(?) NodeNetworkInterface struct

* Final(??) NodeNetworkInterface

* Final(???) NodeNetworkInterface. Separated persistent and transient data

* Final NodeNetworkInterface data structure. Implemented all basic getters

* Continue migrating functionality to network interface

* Migrate all NodeGraphMessage's to use network interface

* Fix all helper functions in NodeGraphMessageHandler

* Move document metadata to network interface, remove various cached fields

* Move all editor only NodeNetwork implementations to NodeNetworkInterface

* Fix all DocumentNodeDefinitions

* Rework and migrate GraphOperationMessages to network interface

* Continue migration to NodeNetworkInterface

* Save point before merging master

* Fix all errors in network_interface

* 850 -> 160 errors

* Fix all errors :D

* Render default document

* Visualize click targets

* merge conflicts

* Cache transient metadata separately, store entire interface in document history

* Start migration to storing selected nodes for each network

* Remove selected nodes from document message handler

* Move outward wires and all nodes bounding box to transient metadata

* Fix connecting/disconnecting nodes

* Layer stack organization for disconnecting/connecting nodes

* Basic chain locking

* Improve chain positioning

* Add copy/pasting

* Move upstream nodes on shift+drag

* merge conflict fixes

* Improve Graph.svelte code quality

* Final improvements to Graph.svelte

* Fix layer panel

* Performance optimizations

* Bug fixes and derived PTZ

* Chain organization improvement and bug fixes

* Bug fixes, remove all warnings

* Automatic file upgrade

* Final code review

* Fix editor tests

* Fix compile errors

* Remove select tool intersection check when panning

* WIP: Import/Exports

* Fix JS issues

* Finish simplified import/export UI

* Import/Export viewport edge UI

* Remove minimum y bound on import/export ports

* Improve performance while panning graph

* cargo fmt

* Fix CI code build

* Format the demo artwork graph with chains

* Code review

---------

Co-authored-by: Keavon Chambers <keavon@keavon.com>
Co-authored-by: dennis@kobert.dev <dennis@kobert.dev>

editor/src/messages/dialog/dialog_message_handler.rs

@@ -70,22 +70,25 @@ impl MessageHandler<DialogMessage, DialogMessageData<'_>> for DialogMessageHandl
 			DialogMessage::RequestExportDialog => {
 				if let Some(document) = portfolio.active_document() {
 					let artboards = document
-						.metadata
+						.metadata()
 						.all_layers()
-						.filter(|&layer| document.metadata.is_artboard(layer))
+						.filter(|&layer| document.network_interface.is_artboard(&layer.to_node(), &[]))
 						.map(|layer| {
 							let name = document
-								.network
-								.nodes
-								.get(&layer.to_node())
-								.and_then(|node| if node.alias.is_empty() { None } else { Some(node.alias.clone()) })
+								.network_interface
+								.node_metadata(&layer.to_node(), &[])
+								.map(|node| node.persistent_metadata.display_name.clone())
+								.and_then(|name| if name.is_empty() { None } else { Some(name) })
 								.unwrap_or_else(|| "Artboard".to_string());
 							(layer, name)
 						})
 						.collect();
 
 					self.export_dialog.artboards = artboards;
-					self.export_dialog.has_selection = document.selected_nodes.selected_layers(document.metadata()).next().is_some();
+					self.export_dialog.has_selection = document
+						.network_interface
+						.selected_nodes(&[])
+						.is_some_and(|selected_nodes| selected_nodes.selected_layers(document.metadata()).next().is_some());
 					self.export_dialog.send_dialog_to_frontend(responses);
 				}
 			}