feat: run shell commands asynchronously from command mode

src/tui.rs

@@ -1142,7 +1142,10 @@ impl BufferViewports {
         let Some(kind) = wheel_kind(&mouse) else {
             return false;
         };
-        if editor.palette().is_some() || editor.startup_diagnostic().is_some() {
+        if editor.palette().is_some()
+            || editor.startup_diagnostic().is_some()
+            || editor.command_output().is_some()
+        {
             return true;
         }
         let Some((buffer_id, viewport)) = self.document.geometry else {
@@ -1781,6 +1784,7 @@ fn chrome_items<'a>(
                 String::new()
             }),
             "battery" if editor.label(name).is_empty() => Cow::Borrowed(editor.battery_label()),
+            "shell" if editor.label(name).is_empty() => Cow::Borrowed(editor.shell_label()),
             _ => Cow::Borrowed(editor.label(name)),
         };
         // Empty values remain hidden even when a title or decoration is configured.
@@ -2839,6 +2843,7 @@ fn draw_overlays(
         || editor.palette().is_some()
         || editor.hover().is_some()
         || editor.startup_diagnostic().is_some()
+        || editor.command_output().is_some()
         || editor
             .file_picker()
             .is_some_and(|picker| picker.presentation == FilePresentation::Floating);
@@ -2852,6 +2857,7 @@ fn draw_overlays(
         }
     }
     if !matches!(editor.mode(), Mode::Command | Mode::Search)
+        && editor.command_output().is_none()
         && !editor.file_picker().is_some_and(|picker| picker.focused)
         && let Some((_, position)) = caret
         && !panels
@@ -2899,6 +2905,9 @@ fn draw_overlays(
     if let Some(diagnostic) = editor.startup_diagnostic() {
         draw_startup_diagnostic(frame, diagnostic, area);
     }
+    if let Some(output) = editor.command_output() {
+        draw_diagnostic_panel(frame, &output.content, area, &output.title, false);
+    }
 }
 
 struct DiffGeometry {
@@ -4622,6 +4631,16 @@ fn floating_panel(area: Rect) -> Rect {
 }
 
 fn draw_startup_diagnostic(frame: &mut Frame, diagnostic: &StartupDiagnostic, area: Rect) {
+    draw_diagnostic_panel(frame, diagnostic, area, "Configuration error", true);
+}
+
+fn draw_diagnostic_panel(
+    frame: &mut Frame,
+    diagnostic: &StartupDiagnostic,
+    area: Rect,
+    title: &str,
+    startup: bool,
+) {
     let panel = floating_panel(area);
     frame.render_widget(Clear, panel);
     let bordered = panel.width >= 4 && panel.height >= 4;
@@ -4631,8 +4650,8 @@ fn draw_startup_diagnostic(frame: &mut Frame, diagnostic: &StartupDiagnostic, ar
         } else {
             Borders::NONE
         })
-        .border_style(Style::default().fg(Color::Red))
-        .title(" Configuration error ");
+        .border_style(Style::default().fg(if startup { Color::Red } else { Color::DarkGray }))
+        .title(format!(" {} ", display_text(title)));
     let content = if bordered { block.inner(panel) } else { panel };
     if bordered {
         frame.render_widget(block, panel);
@@ -4658,11 +4677,15 @@ fn draw_startup_diagnostic(frame: &mut Frame, diagnostic: &StartupDiagnostic, ar
         .collect();
     frame.render_widget(Paragraph::new(lines), text_area);
     frame.render_widget(
-        Paragraph::new("Arrows scroll · Home reset · Enter/Esc continue")
-            .style(Style::default().fg(Color::DarkGray)),
+        Paragraph::new(if startup {
+            "Arrows scroll · Home reset · Enter/Esc continue"
+        } else {
+            "Arrows scroll · Home reset · Enter/Esc close"
+        })
+        .style(Style::default().fg(Color::DarkGray)),
         help_area,
     );
-    if text_area.width > 0 && text_area.height > 0 {
+    if startup && text_area.width > 0 && text_area.height > 0 {
         frame.set_cursor_position((text_area.x, text_area.y));
     }
 }
@@ -5546,6 +5569,19 @@ impl WheelPanels {
         let Some(kind) = wheel_kind(&mouse) else {
             return false;
         };
+        if session.editor().command_output().is_some() {
+            let input = match kind {
+                MouseEventKind::ScrollUp => Input::Up,
+                MouseEventKind::ScrollDown => Input::Down,
+                MouseEventKind::ScrollLeft => Input::Left,
+                MouseEventKind::ScrollRight => Input::Right,
+                _ => unreachable!(),
+            };
+            for _ in 0..3 {
+                session.handle(input.clone());
+            }
+            return true;
+        }
         let horizontal = matches!(
             kind,
             MouseEventKind::ScrollLeft | MouseEventKind::ScrollRight