Refactor view handling and keybinding API

Move the `View` enum to a dedicated module and implement `Widget` for
`&App` there.
Rename `default_view_keybindings` to `default_keybindings` and adjust
its
signature. Redesign `KeybindingsWidget` to accept an explicit list of
bindings instead of a `View`. Update imports, function signatures, and
rendering
logic across the codebase to reflect these changes.

src/app/app.rs

@@ -1,5 +1,5 @@
 use crate::{
-    app::{GameStates, handle_keybindings},
+    app::{GameStates, handle_keybindings, view::View},
     cli::Cli,
 };
 use clap::ValueEnum;
@@ -34,15 +34,6 @@ pub struct App {
     pub skill_points_limit: u16,
 }
 
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, ValueEnum)]
-pub enum View {
-    MainMenu,
-    Skirmish,
-    PerkDecks,
-    SkillsConfig,
-    Settings,
-}
-
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, ValueEnum)]
 pub enum GameMode {
     LastManStanding,
@@ -100,7 +91,8 @@ impl App {
     }
 
     fn handle_key_event(&mut self, key_event: KeyEvent) -> Result<()> {
-        handle_keybindings(self, key_event)
+        handle_keybindings(self, key_event);
+        Ok(())
     }
 }
 

src/app/keybind.rs

@@ -1,16 +1,14 @@
 use crate::app::{
-    App, View,
-    keybindings::{default_view_keybindings, main_menu_keybindings, settings_keybindings},
+    App,
+    keybindings::{default_keybindings, main_menu_keybindings, settings_keybindings},
+    view::View,
 };
 use ratatui::crossterm::event::KeyEvent;
-use std::io::Result;
 
-pub fn handle_keybindings(app: &mut App, key_event: KeyEvent) -> Result<()> {
+pub fn handle_keybindings(app: &mut App, key_event: KeyEvent) {
     match app.view {
         View::MainMenu => main_menu_keybindings(app, &key_event),
         View::Settings => settings_keybindings(app, &key_event),
-        _ => default_view_keybindings(app, &key_event),
+        _ => default_keybindings(app, &key_event),
     }
-
-    Ok(())
 }

src/app/keybindings/default.rs

@@ -4,7 +4,7 @@ use crate::app::{
 };
 use ratatui::crossterm::event::KeyEvent;
 
-pub fn default_view_keybindings(app: &mut App, key_event: &KeyEvent) {
+pub fn default_keybindings(app: &mut App, key_event: &KeyEvent) {
     if let Some(action) = event_to_action(&key_event) {
         match action {
             Action::Quit => app.exit = true,

src/app/keybindings/keybindings.rs

@@ -1,6 +1,4 @@
-use crate::app::View;
 use ratatui::crossterm::event::{KeyCode, KeyEvent, KeyEventKind, KeyModifiers};
-use std::collections::HashSet;
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub enum Action {
@@ -115,51 +113,3 @@ pub fn event_to_action(event: &KeyEvent) -> Option<Action> {
         .find(|b| b.code == event.code && b.kind == event.kind && b.modifiers == event.modifiers)
         .map(|b| b.action)
 }
-
-fn used_groups_in_view(keybindings: &Vec<Option<&'static KeyBinding>>) -> HashSet<Group> {
-    keybindings
-        .iter()
-        .filter_map(|b| b.map(|binding| binding.group))
-        .collect()
-}
-
-pub fn binding_for_view(view: View) -> (HashSet<Group>, Vec<Option<&'static KeyBinding>>) {
-    let main_menu_keybindings: Vec<Option<&'static KeyBinding>> = vec![
-        binding_for(Action::Up),
-        binding_for(Action::Down),
-        binding_for(Action::Space),
-        binding_for(Action::Quit),
-        binding_for(Action::Quit2),
-    ];
-
-    let settings_keybinding: Vec<Option<&'static KeyBinding>> = vec![
-        binding_for(Action::Up),
-        binding_for(Action::Down),
-        binding_for(Action::Space),
-        binding_for(Action::Enter),
-        binding_for(Action::Quit),
-        binding_for(Action::Quit2),
-        binding_for(Action::Esc),
-    ];
-
-    let default_keybindings: Vec<Option<&'static KeyBinding>> = vec![
-        binding_for(Action::Quit),
-        binding_for(Action::Quit2),
-        binding_for(Action::Esc),
-    ];
-
-    match view {
-        View::MainMenu => (
-            used_groups_in_view(&main_menu_keybindings),
-            main_menu_keybindings,
-        ),
-        View::Settings => (
-            used_groups_in_view(&settings_keybinding),
-            settings_keybinding,
-        ),
-        _ => (
-            used_groups_in_view(&default_keybindings),
-            default_keybindings,
-        ),
-    }
-}

src/app/keybindings/mod.rs

@@ -3,9 +3,7 @@ pub mod keybindings;
 pub mod main_menu;
 pub mod settings;
 
-pub use default::default_view_keybindings;
-pub use keybindings::{
-    Action, Group, KEYBINDINGS, KeyBinding, binding_for, binding_for_view, event_to_action,
-};
+pub use default::default_keybindings;
+pub use keybindings::{Action, Group, KEYBINDINGS, KeyBinding, binding_for, event_to_action};
 pub use main_menu::main_menu_keybindings;
 pub use settings::settings_keybindings;

src/app/mod.rs

@@ -2,11 +2,13 @@ pub mod app;
 pub mod game_states;
 pub mod keybind;
 pub mod keybindings;
-pub mod widget;
+pub mod view;
+pub mod views;
 pub mod widgets;
 
-pub use app::{App, Event, GameMode, PerkDecks, View, handle_input_events};
+pub use app::{App, Event, GameMode, PerkDecks, handle_input_events};
 pub use game_states::{
     GameStates, MainMenuState, PerkDecksState, SettingsState, SkillsConfigState, SkirmishState,
 };
 pub use keybind::handle_keybindings;
+pub use view::View;

src/app/view.rs

@@ -0,0 +1,28 @@
+use crate::app::{
+    App,
+    views::{default_view, main_menu_view, settings_view},
+};
+use clap::ValueEnum;
+use ratatui::{buffer::Buffer, layout::Rect, widgets::Widget};
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, ValueEnum)]
+pub enum View {
+    MainMenu,
+    Skirmish,
+    PerkDecks,
+    SkillsConfig,
+    Settings,
+}
+
+impl Widget for &App {
+    fn render(self, area: Rect, buf: &mut Buffer)
+    where
+        Self: Sized,
+    {
+        match self.view {
+            View::MainMenu => main_menu_view(self, area, buf),
+            View::Settings => settings_view(self, area, buf),
+            _ => default_view(area, buf),
+        }
+    }
+}

src/app/views/default.rs

@@ -1,4 +1,7 @@
-use crate::app::{App, widgets::KeybindingsWidget};
+use crate::app::{
+    keybindings::{Action, KeyBinding, binding_for},
+    widgets::KeybindingsWidget,
+};
 use ratatui::{
     buffer::Buffer,
     layout::{Alignment, Constraint, Layout, Rect},
@@ -6,7 +9,7 @@ use ratatui::{
     widgets::{Block, Borders, Paragraph, Widget},
 };
 
-pub fn default_view_widget(app: &App, area: Rect, buf: &mut Buffer) {
+pub fn default_view(area: Rect, buf: &mut Buffer) {
     let vertical_layout: Layout = Layout::vertical([Constraint::Fill(1), Constraint::Length(4)]);
 
     let [main_area, keybindings_area] = vertical_layout.areas(area);
@@ -21,5 +24,13 @@ pub fn default_view_widget(app: &App, area: Rect, buf: &mut Buffer) {
         )
         .render(main_area, buf);
 
-    KeybindingsWidget::new(app.view).render(keybindings_area, buf);
+    {
+        let keybindings: Vec<Option<&'static KeyBinding>> = vec![
+            binding_for(Action::Quit),
+            binding_for(Action::Quit2),
+            binding_for(Action::Esc),
+        ];
+
+        KeybindingsWidget::new(keybindings).render(keybindings_area, buf);
+    }
 }

src/app/views/main_menu.rs

@@ -1,4 +1,8 @@
-use crate::app::{App, View, widgets::KeybindingsWidget};
+use crate::app::{
+    App, View,
+    keybindings::{Action, KeyBinding, binding_for},
+    widgets::KeybindingsWidget,
+};
 use clap::ValueEnum;
 use ratatui::{
     buffer::Buffer,
@@ -26,7 +30,7 @@ fn view_options() -> Vec<(usize, String)> {
         .collect()
 }
 
-pub fn main_menu_widget(app: &App, area: Rect, buf: &mut Buffer) {
+pub fn main_menu_view(app: &App, area: Rect, buf: &mut Buffer) {
     let vertical_layout: Layout = Layout::vertical([Constraint::Fill(1), Constraint::Length(4)]);
 
     let [main_menu_area, keybindings_area] = vertical_layout.areas(area);
@@ -81,5 +85,15 @@ pub fn main_menu_widget(app: &App, area: Rect, buf: &mut Buffer) {
             .render(options_area, buf);
     }
 
-    KeybindingsWidget::new(View::MainMenu).render(keybindings_area, buf);
+    {
+        let keybindings: Vec<Option<&'static KeyBinding>> = vec![
+            binding_for(Action::Up),
+            binding_for(Action::Down),
+            binding_for(Action::Space),
+            binding_for(Action::Quit),
+            binding_for(Action::Quit2),
+        ];
+
+        KeybindingsWidget::new(keybindings).render(keybindings_area, buf);
+    }
 }

src/app/views/mod.rs

@@ -0,0 +1,7 @@
+pub mod default;
+pub mod main_menu;
+pub mod settings;
+
+pub use default::default_view;
+pub use main_menu::main_menu_view;
+pub use settings::settings_view;

src/app/views/settings.rs

@@ -1,4 +1,8 @@
-use crate::app::{App, widgets::KeybindingsWidget};
+use crate::app::{
+    App,
+    keybindings::{Action, KeyBinding, binding_for},
+    widgets::KeybindingsWidget,
+};
 use ratatui::{
     buffer::Buffer,
     layout::{Alignment, Constraint, Layout, Rect},
@@ -6,7 +10,7 @@ use ratatui::{
     widgets::{Block, Borders, Padding, Paragraph, Widget},
 };
 
-pub fn settings_widget(app: &App, area: Rect, buf: &mut Buffer) {
+pub fn settings_view(app: &App, area: Rect, buf: &mut Buffer) {
     let vertical_layout: Layout = Layout::vertical([
         Constraint::Length(10),
         Constraint::Fill(1),
@@ -37,5 +41,17 @@ pub fn settings_widget(app: &App, area: Rect, buf: &mut Buffer) {
         )
         .render(main_area, buf);
 
-    KeybindingsWidget::new(app.view).render(keybindings_area, buf);
+    {
+        let keybindings: Vec<Option<&'static KeyBinding>> = vec![
+            binding_for(Action::Up),
+            binding_for(Action::Down),
+            binding_for(Action::Space),
+            binding_for(Action::Enter),
+            binding_for(Action::Quit),
+            binding_for(Action::Quit2),
+            binding_for(Action::Esc),
+        ];
+
+        KeybindingsWidget::new(keybindings).render(keybindings_area, buf);
+    }
 }

src/app/widget.rs

@@ -1,18 +0,0 @@
-use crate::app::{
-    App, View,
-    widgets::{default_view_widget, main_menu_widget, settings_widget},
-};
-use ratatui::{buffer::Buffer, layout::Rect, widgets::Widget};
-
-impl Widget for &App {
-    fn render(self, area: Rect, buf: &mut Buffer)
-    where
-        Self: Sized,
-    {
-        match self.view {
-            View::MainMenu => main_menu_widget(self, area, buf),
-            View::Settings => settings_widget(self, area, buf),
-            _ => default_view_widget(self, area, buf),
-        }
-    }
-}

src/app/widgets/keybindings.rs

@@ -1,7 +1,6 @@
-use crate::app::{
-    View,
-    keybindings::{Group, binding_for_view},
-};
+use std::collections::HashSet;
+
+use crate::app::keybindings::{Group, KeyBinding};
 use ratatui::{
     buffer::Buffer,
     layout::{Alignment, Constraint, Layout, Rect},
@@ -15,8 +14,11 @@ pub struct KeybindingsWidget {
 }
 
 impl KeybindingsWidget {
-    pub fn new(view: View) -> Self {
-        let (used_groups, keybindings) = binding_for_view(view);
+    pub fn new(keybindings: Vec<Option<&'static KeyBinding>>) -> Self {
+        let used_groups: HashSet<Group> = keybindings
+            .iter()
+            .filter_map(|b| b.map(|binding| binding.group))
+            .collect();
 
         let mut grouped_keybindings: Vec<Paragraph<'static>> = Vec::new();
         for (i, group) in Group::iter().enumerate() {

src/app/widgets/mod.rs

@@ -1,9 +1,3 @@
-pub mod default;
 pub mod keybindings;
-pub mod main_menu;
-pub mod settings;
 
-pub use default::default_view_widget;
 pub use keybindings::KeybindingsWidget;
-pub use main_menu::main_menu_widget;
-pub use settings::settings_widget;

src/cli.rs

@@ -1,4 +1,4 @@
-use crate::app::{GameMode, PerkDecks, View};
+use crate::app::{GameMode, PerkDecks, view::View};
 use clap::Parser;
 
 #[derive(Parser, Debug)]