Desktop: Add native file dialogs (#2939)

* Add native open file dialog

* Add native save file dialog

* Fix integer underflow in defer message handler

* Update nix flake

* Cleanup

---------

Co-authored-by: Dennis Kobert <dennis@kobert.dev>

editor/src/messages/defer/defer_message_handler.rs

@@ -25,8 +25,8 @@ impl MessageHandler<DeferMessage, ()> for DeferMessageHandler {
 					return;
 				}
 				// Find the index of the last message we can process
-				let num_elements_to_remove = self.after_graph_run.binary_search_by_key(&(execution_id + 1), |x| x.0).unwrap_or_else(|pos| pos - 1);
-				let elements = self.after_graph_run.drain(0..=num_elements_to_remove);
+				let split = self.after_graph_run.partition_point(|&(id, _)| id <= execution_id);
+				let elements = self.after_graph_run.drain(..split);
 				for (_, message) in elements.rev() {
 					responses.add_front(message);
 				}

editor/src/messages/frontend/frontend_message.rs

@@ -12,6 +12,7 @@ use graph_craft::document::NodeId;
 use graphene_std::raster::Image;
 use graphene_std::raster::color::Color;
 use graphene_std::text::{Font, TextAlign};
+use std::path::PathBuf;
 
 #[cfg(not(target_family = "wasm"))]
 use crate::messages::portfolio::document::overlays::utility_types::OverlayContext;
@@ -63,6 +64,12 @@ pub enum FrontendMessage {
 		#[serde(rename = "commitDate")]
 		commit_date: String,
 	},
+	TriggerSaveDocument {
+		document_id: DocumentId,
+		name: String,
+		path: Option<PathBuf>,
+		document: String,
+	},
 	TriggerDownloadImage {
 		svg: String,
 		name: String,

editor/src/messages/portfolio/document/document_message.rs

@@ -1,3 +1,5 @@
+use std::path::PathBuf;
+
 use super::utility_types::misc::{GroupFolderType, SnappingState};
 use crate::messages::input_mapper::utility_types::input_keyboard::Key;
 use crate::messages::portfolio::document::overlays::utility_types::OverlayContext;
@@ -105,6 +107,9 @@ pub enum DocumentMessage {
 	RenderRulers,
 	RenderScrollbars,
 	SaveDocument,
+	SavedDocument {
+		path: Option<PathBuf>,
+	},
 	SelectParentLayer,
 	SelectAllLayers,
 	SelectedLayersLower,

editor/src/messages/portfolio/document/document_message_handler.rs

@@ -37,6 +37,7 @@ use graphene_std::table::Table;
 use graphene_std::vector::PointId;
 use graphene_std::vector::click_target::{ClickTarget, ClickTargetType};
 use graphene_std::vector::style::ViewMode;
+use std::path::PathBuf;
 use std::time::Duration;
 
 #[derive(ExtractField)]
@@ -115,6 +116,9 @@ pub struct DocumentMessageHandler {
 	/// Stack of document network snapshots for future history states.
 	#[serde(skip)]
 	document_redo_history: VecDeque<NodeNetworkInterface>,
+	/// The path of the to the document file.
+	#[serde(skip)]
+	path: Option<PathBuf>,
 	/// Hash of the document snapshot that was most recently saved to disk by the user.
 	#[serde(skip)]
 	saved_hash: Option<u64>,
@@ -162,6 +166,7 @@ impl Default for DocumentMessageHandler {
 			selection_network_path: Vec::new(),
 			document_undo_history: VecDeque::new(),
 			document_redo_history: VecDeque::new(),
+			path: None,
 			saved_hash: None,
 			auto_saved_hash: None,
 			layer_range_selection_reference: None,
@@ -996,11 +1001,16 @@ impl MessageHandler<DocumentMessage, DocumentMessageContext<'_>> for DocumentMes
 					true => self.name.clone(),
 					false => self.name.clone() + FILE_SAVE_SUFFIX,
 				};
-				responses.add(FrontendMessage::TriggerDownloadTextFile {
-					document: self.serialize_document(),
+				responses.add(FrontendMessage::TriggerSaveDocument {
+					document_id,
 					name,
+					path: self.path.clone(),
+					document: self.serialize_document(),
 				})
 			}
+			DocumentMessage::SavedDocument { path } => {
+				self.path = path;
+			}
 			DocumentMessage::SelectParentLayer => {
 				let selected_nodes = self.network_interface.selected_nodes();
 				let selected_layers = selected_nodes.selected_layers(self.metadata());