[tui] Handle MenuBar actions.

Fixes #7.

src/tui/app.rs

@@ -241,6 +241,7 @@ impl<'a> Component for App<'a> {
         };
         match action {
             Action::Quit | Action::Handled => return Ok(action),
+            Action::Save => self.editor.save()?,
             _ => {}
         }
         Ok(Action::Noop)

src/tui/title_bar.rs

@@ -1,4 +1,8 @@
+use crate::tui::component::Action::Pass;
 use crate::tui::component::{Action, Component, ComponentState};
+use crate::tui::title_bar::MenuBarItemOption::{
+    About, Exit, Reload, Save, ShowHideExplorer, ShowHideLogger,
+};
 use ratatui::buffer::Buffer;
 use ratatui::crossterm::event::{KeyCode, KeyEvent};
 use ratatui::layout::Rect;
@@ -16,6 +20,29 @@ enum MenuBarItem {
     Help,
 }
 
+#[derive(Debug, Clone, Copy, PartialEq, Eq, FromRepr, EnumIter)]
+enum MenuBarItemOption {
+    Save,
+    Reload,
+    Exit,
+    ShowHideExplorer,
+    ShowHideLogger,
+    About,
+}
+
+impl MenuBarItemOption {
+    fn id(&self) -> &str {
+        match self {
+            MenuBarItemOption::Save => "Save",
+            MenuBarItemOption::Reload => "Reload",
+            MenuBarItemOption::Exit => "Exit",
+            MenuBarItemOption::ShowHideExplorer => "Show / hide explorer",
+            MenuBarItemOption::ShowHideLogger => "Show / hide logger",
+            MenuBarItemOption::About => "About",
+        }
+    }
+}
+
 impl MenuBarItem {
     pub fn next(self) -> Self {
         let cur = self as usize;
@@ -37,11 +64,11 @@ impl MenuBarItem {
         }
     }
 
-    pub fn options(&self) -> &[&str] {
+    pub fn options(&self) -> &[MenuBarItemOption] {
         match self {
-            MenuBarItem::File => &["Save", "Reload"],
-            MenuBarItem::View => &["Show/hide explorer", "Show/hide logger"],
-            MenuBarItem::Help => &["About"],
+            MenuBarItem::File => &[Save, Reload, Exit],
+            MenuBarItem::View => &[ShowHideExplorer, ShowHideLogger],
+            MenuBarItem::Help => &[About],
         }
     }
 }
@@ -91,7 +118,7 @@ impl MenuBar {
     ) {
         let popup_area = Self::rect_under_option(title_bar_anchor, area, 40, 10);
         Clear::default().render(popup_area, buf);
-        let options = opened.options().iter().map(|i| ListItem::new(*i));
+        let options = opened.options().iter().map(|i| ListItem::new(i.id()));
         StatefulWidget::render(
             List::new(options)
                 .block(Block::bordered().title(self.selected.id()))
@@ -149,8 +176,18 @@ impl Component for MenuBar {
                     Ok(Action::Handled)
                 }
                 KeyCode::Enter => {
-                    // TODO: Handle action for the item.
-                    Ok(Action::Handled)
+                    if let Some(selected) = self.list_state.selected() {
+                        let seletion = self.selected.options()[selected];
+                        return match seletion {
+                            Save => Ok(Action::Save),
+                            Exit => Ok(Action::Quit),
+                            Reload => Ok(Action::Noop),           // TODO
+                            ShowHideExplorer => Ok(Action::Noop), // TODO
+                            ShowHideLogger => Ok(Action::Noop),   // TODO
+                            About => Ok(Action::Noop),            // TODO
+                        };
+                    }
+                    Ok(Action::Noop)
                 }
                 KeyCode::Esc | KeyCode::Char('q') => {
                     self.opened = None;