T10: focus in and out reach a program under mode 1004; the window wears the program's title; a bell is logged and silent; the scrollback setting caps history and trims it live; Cmd-F finds in the scrollback with Ely's FindWidget, matches washed, Enter older, Shift-Enter newer, new output searched again

src/app.rs

@@ -4,21 +4,46 @@ use anyhow::Context as _;
 use ely_gpui_component::{primitives::FocusScope, theme::ActiveTheme};
 use gpui::{
     App, AppContext, Bounds, Context, Entity, FocusHandle, Focusable, IntoElement, ParentElement,
-    Render, Styled, TitlebarOptions, Window, WindowBounds, WindowHandle, WindowOptions, px, size,
+    Render, Styled, Subscription, TitlebarOptions, Window, WindowBounds, WindowHandle,
+    WindowOptions, px, size,
 };
 
 #[cfg(target_os = "macos")]
 use crate::term::mac;
 use crate::{
     settings::SettingsStore,
-    term::{ICONS, Launch, MONO, TerminalView, config, input, shell::ShellIntegration, spawn},
+    term::{
+        ICONS, Launch, MONO, TerminalEvent, TerminalView, config, input, shell::ShellIntegration,
+        spawn,
+    },
     themes,
 };
 
+/// The window title while the program names none.
+const TITLE: &str = "ELYTerminal";
+
 /// The main window's content.
 pub struct Workspace {
     focus: FocusHandle,
     terminal: Entity<TerminalView>,
+    _events: Subscription,
+}
+
+impl Workspace {
+    /// The window wears the terminal's title.
+    fn terminal_event(
+        &mut self,
+        _: &Entity<TerminalView>,
+        event: &TerminalEvent,
+        window: &mut Window,
+        _: &mut Context<Self>,
+    ) {
+        if let TerminalEvent::Title(title) = event {
+            let title = if title.is_empty() { TITLE } else { title };
+            log::debug!("app: the window title is {title:?}");
+            window.set_window_title(title);
+        }
+    }
 }
 
 impl Render for Workspace {
@@ -75,7 +100,7 @@ pub fn open(launch: Launch, cx: &mut App) -> anyhow::Result<WindowHandle<Workspa
     let options = WindowOptions {
         window_bounds: Some(WindowBounds::Windowed(bounds)),
         titlebar: Some(TitlebarOptions {
-            title: Some("ELYTerminal".into()),
+            title: Some(TITLE.into()),
             ..Default::default()
         }),
         ..Default::default()
@@ -89,6 +114,7 @@ pub fn open(launch: Launch, cx: &mut App) -> anyhow::Result<WindowHandle<Workspa
         window.focus(&terminal.focus_handle(cx), cx);
         cx.new(|cx| Workspace {
             focus: cx.focus_handle(),
+            _events: cx.subscribe_in(&terminal, window, Workspace::terminal_event),
             terminal,
         })
     })?;