fix crash on entering submodule #1510

also do not allow opening submodule without workdir

CHANGELOG.md

@@ -33,6 +33,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * `edit` command duplication ([#1489](https://github.com/extrawurst/gitui/issues/1489))
 * syntax errors in `key_bindings.ron` will be logged ([#1491](https://github.com/extrawurst/gitui/issues/1491))
 * commit hooks report "command not found" on Windows with wsl2 installed ([#1528](https://github.com/extrawurst/gitui/issues/1528))
+* crashes on entering submodules ([#1510](https://github.com/extrawurst/gitui/issues/1510))
 
 ### Changed
 * minimum supported rust version bumped to 1.64 (thank you `clap`)

src/components/submodules.rs

@@ -88,7 +88,7 @@ impl DrawableComponent for SubmodulesListComponent {
 			let chunks = Layout::default()
 				.direction(Direction::Horizontal)
 				.constraints(
-					[Constraint::Min(40), Constraint::Length(40)]
+					[Constraint::Min(40), Constraint::Length(60)]
 						.as_ref(),
 				)
 				.split(chunks_vertical[0]);
@@ -127,7 +127,7 @@ impl Component for SubmodulesListComponent {
 
 			out.push(CommandInfo::new(
 				strings::commands::open_submodule(&self.key_config),
-				self.is_valid_selection(),
+				self.can_open_submodule(),
 				true,
 			));
 
@@ -182,9 +182,11 @@ impl Component for SubmodulesListComponent {
 					.map(Into::into);
 			} else if key_match(e, self.key_config.keys.enter) {
 				if let Some(submodule) = self.selected_entry() {
-					self.queue.push(InternalEvent::OpenRepo {
-						path: submodule.path.clone(),
-					});
+					if submodule.status.is_in_wd() {
+						self.queue.push(InternalEvent::OpenRepo {
+							path: submodule.path.clone(),
+						});
+					}
 				}
 			} else if key_match(
 				e,
@@ -297,6 +299,12 @@ impl SubmodulesListComponent {
 		self.selected_entry().is_some()
 	}
 
+	fn can_open_submodule(&self) -> bool {
+		self.selected_entry()
+			.map(|s| s.status.is_in_wd())
+			.unwrap_or_default()
+	}
+
 	//TODO: dedup this almost identical with BranchListComponent
 	fn move_selection(&mut self, scroll: ScrollType) -> Result<bool> {
 		let new_selection = match scroll {

src/watcher.rs

@@ -8,9 +8,7 @@ use notify_debouncer_mini::{
 	new_debouncer, new_debouncer_opt, DebouncedEvent,
 };
 use scopetime::scope_time;
-use std::{
-	path::Path, sync::mpsc::RecvError, thread, time::Duration,
-};
+use std::{path::Path, thread, time::Duration};
 
 pub struct RepoWatcher {
 	receiver: crossbeam_channel::Receiver<()>,
@@ -54,7 +52,7 @@ impl RepoWatcher {
 			Result<Vec<DebouncedEvent>, Vec<Error>>,
 		>,
 		sender: &Sender<()>,
-	) -> Result<(), RecvError> {
+	) -> Result<()> {
 		loop {
 			let ev = receiver.recv()?;
 
@@ -66,7 +64,7 @@ impl RepoWatcher {
 				}
 
 				if !ev.is_empty() {
-					sender.send(()).expect("send error");
+					sender.send(())?;
 				}
 			}
 		}