error if file to be opened in external editor will not be found (#184)

src/app.rs

@@ -18,8 +18,7 @@ use anyhow::{anyhow, Result};
 use asyncgit::{sync, AsyncNotification, CWD};
 use crossbeam_channel::Sender;
 use crossterm::event::{Event, KeyEvent};
-use std::path::PathBuf;
-use std::{cell::Cell, cell::RefCell, rc::Rc};
+use std::{cell::Cell, cell::RefCell, path::Path, rc::Rc};
 use tui::{
     backend::Backend,
     layout::{Constraint, Direction, Layout, Margin, Rect},
@@ -49,7 +48,7 @@ pub struct App {
 
     // "Flags"
     requires_redraw: Cell<bool>,
-    file_to_open: Option<Box<PathBuf>>,
+    file_to_open: Option<String>,
 }
 
 // public interface
@@ -202,7 +201,7 @@ impl App {
                 let result = match self.file_to_open.take() {
                     Some(path) => {
                         ExternalEditorComponent::open_file_in_editor(
-                            &path,
+                            Path::new(&path),
                         )
                     }
                     None => self.commit.show_editor(),

src/components/externaleditor.rs

@@ -38,6 +38,10 @@ impl ExternalEditorComponent {
 
     /// opens file at given `path` in an available editor
     pub fn open_file_in_editor(path: &Path) -> Result<()> {
+        if !path.exists() {
+            return Err(anyhow!("file not found: {:?}", path));
+        }
+
         io::stdout().execute(LeaveAlternateScreen)?;
         defer! {
             io::stdout().execute(EnterAlternateScreen).expect("reset terminal");

src/queue.rs

@@ -1,7 +1,6 @@
 use crate::tabs::StashingOptions;
 use asyncgit::sync::CommitId;
 use bitflags::bitflags;
-use std::path::PathBuf;
 use std::{cell::RefCell, collections::VecDeque, rc::Rc};
 
 bitflags! {
@@ -50,7 +49,7 @@ pub enum InternalEvent {
     ///
     InspectCommit(CommitId),
     ///
-    OpenExternalEditor(Option<Box<PathBuf>>),
+    OpenExternalEditor(Option<String>),
 }
 
 ///

src/tabs/status.rs

@@ -18,7 +18,6 @@ use asyncgit::{
 };
 use crossbeam_channel::Sender;
 use crossterm::event::Event;
-use std::path::PathBuf;
 use tui::layout::{Constraint, Direction, Layout};
 
 ///
@@ -389,9 +388,7 @@ impl Component for Status {
                         {
                             self.queue.borrow_mut().push_back(
                                 InternalEvent::OpenExternalEditor(
-                                    Some(Box::new(PathBuf::from(
-                                        path,
-                                    ))),
+                                    Some(path),
                                 ),
                             );
                         }