Confirm session deletion

src/app/view.rs

@@ -70,6 +70,7 @@ impl App {
     pub(super) fn modal_open(&self) -> bool {
         self.preferences_open
             || self.pending_project_path.is_some()
+            || self.pending_session_delete.is_some()
             || self.session_rename.is_some()
             || self.menu_session().is_some()
             || self.pending_a2ui_dismissal.is_some()
@@ -136,6 +137,8 @@ impl App {
             layers.push(self.project_dialog(path));
         } else if let Some((_, title)) = &self.session_rename {
             layers.push(self.rename_dialog(title));
+        } else if let Some(session) = self.pending_delete_session() {
+            layers.push(self.delete_session_panel(session));
         } else if let Some(session) = self.menu_session() {
             layers.push(self.session_menu_panel(session));
         } else if let Some(surface_id) = &self.pending_a2ui_dismissal {
@@ -150,6 +153,8 @@ impl App {
             layers.push(self.project_dialog(path));
         } else if let Some((_, title)) = &self.session_rename {
             layers.push(self.rename_dialog(title));
+        } else if let Some(session) = self.pending_delete_session() {
+            layers.push(self.delete_session_panel(session));
         } else if let Some(session) = self.menu_session() {
             layers.push(self.session_menu_panel(session));
         } else if let Some(surface_id) = &self.pending_a2ui_dismissal {
@@ -389,7 +394,7 @@ impl App {
                 .on_press(Message::OpenSessionMenu(session.id))
                 .style(button::text),
             button(icon(ICON_TRASH, 14))
-                .on_press(Message::DeleteSession(session.id))
+                .on_press(Message::RequestDeleteSession(session.id))
                 .style(button::text),
         ]
         .spacing(3)
@@ -508,12 +513,53 @@ impl App {
 
     fn menu_session(&self) -> Option<&Session> {
         let session_id = self.session_menu?;
+        self.session(session_id)
+    }
+
+    fn pending_delete_session(&self) -> Option<&Session> {
+        let session_id = self.pending_session_delete?;
+        self.session(session_id)
+    }
+
+    fn session(&self, session_id: i32) -> Option<&Session> {
         self.projects
             .iter()
             .flat_map(|project| &project.sessions)
             .find(|session| session.id == session_id)
     }
 
+    fn delete_session_panel<'a>(&self, session: &'a Session) -> Element<'a, Message> {
+        let dialog = container(
+            column![
+                text("Delete session?").size(24),
+                text(format!(
+                    "Delete “{}” and its conversation history? This cannot be undone.",
+                    session.title
+                ))
+                .size(14),
+                row![
+                    Space::new().width(Length::Fill),
+                    action_button("Cancel").on_press(Message::DismissPanel),
+                    danger_button("Delete session").on_press(Message::ConfirmDeleteSession),
+                ]
+                .spacing(8),
+            ]
+            .spacing(12),
+        )
+        .padding(22)
+        .width(460)
+        .style(overview_style);
+
+        opaque(
+            container(dialog)
+                .center_x(Length::Fill)
+                .center_y(Length::Fill)
+                .style(|_| {
+                    container::Style::default().background(Color::from_rgba8(0, 0, 0, 0.68))
+                }),
+        )
+    }
+
     /// Quick actions for one session. Which lifecycle moves are offered depends
     /// on the state the session is in.
     fn session_menu_panel<'a>(&self, session: &'a Session) -> Element<'a, Message> {