feat: Added basic two level navigation

src/app.rs

@@ -1,10 +1,21 @@
 
+use crate::uis::new_transaction::NewTransactionTabState;
+
 pub type AppResult<T> = std::result::Result<T, Box<dyn std::error::Error>>;
 
+pub enum FocusedBlock {
+    Navigation,
+    Body,
+}
+
 pub struct App<'a> {
     pub running: bool,
     pub tabs: Vec<&'a str>,
     pub tab_index: usize,
+    pub focus: FocusedBlock,
+
+    pub new_transaction_tab_state: NewTransactionTabState<'a>,
+
 }
 
 impl<'a> App<'a> {
@@ -12,8 +23,11 @@ impl<'a> App<'a> {
         App {
             running: true,
 
-            tabs: vec!["Tab1", "Tab2", "Tab3"],
+            tabs: vec!["History", "Tab2", "Tab3"],
             tab_index: 0,
+            focus: FocusedBlock::Navigation,
+
+            new_transaction_tab_state: NewTransactionTabState::new(),
         }
     }
 
@@ -27,4 +41,13 @@ impl<'a> App<'a> {
         } else {
             self.tab_index = self.tabs.len() - 1;
         }
-    }}
+    }
+
+    pub fn focus_navigation(&mut self) {
+        self.focus = FocusedBlock::Navigation;
+    }
+
+    pub fn focus_body(&mut self) {
+        self.focus = FocusedBlock::Body;
+    }
+}

src/main.rs

@@ -7,8 +7,9 @@ use ratatui::{
     Terminal,
 };
 
-use recount::app::{App, AppResult};
+use recount::app::{App, AppResult, FocusedBlock};
 use recount::tui::Tui;
+use recount::uis::new_transaction::NewTransactionTabState;
 
 fn main() -> AppResult<()> {
     // Create an application.
@@ -28,16 +29,34 @@ fn main() -> AppResult<()> {
 
         // Handle events.
         if let Event::Key(key) = event::read()? {
+            match app.focus {
+                FocusedBlock::Body => {
+                    match app.tab_index {
+                        2 => {
+                            NewTransactionTabState::handle_event(key, &mut app);
+                        },
+                        _ => {
+                            // Work around "You entered an empty body, and now, I am dead" loops
+                            app.focus_navigation();
+                        }
+                    }
+
+                }
+                FocusedBlock::Navigation => {
                     if key.kind == KeyEventKind::Press {
                         match key.code {
                             KeyCode::Char('q') => break,
                             KeyCode::Tab => app.next_tab(),
+                            KeyCode::Enter => app.focus_body(),
                             // KeyCode::Right => app.next(),
                             // KeyCode::Left => app.previous(),
                             _ => {}
                         }
                     }
                 }
+            }
+        }
+
         std::thread::sleep(Duration::from_millis(20));
     }
 

src/ui.rs

@@ -8,7 +8,7 @@ use ratatui::{
     Frame,
 };
 
-use crate::uis::render_history_tab;
+use crate::uis::{render_new_transaction_tab, render_history_tab};
 
 
 pub fn render<B: Backend> (f: &mut Frame<B>, app: &App) {
@@ -31,7 +31,8 @@ pub fn render<B: Backend> (f: &mut Frame<B>, app: &App) {
         .constraints([Constraint::Percentage(100)])
         .split(chunks[1]);
     // if app.tabs selected == history,
-    render_history_tab(f, bottom_chunk[0], app);
+    //render_history_tab(f, bottom_chunk[0], app);
+    render_new_transaction_tab(f, bottom_chunk[0], app);
 }
 
 pub fn render_statusbar<B: Backend> (f: &mut Frame<B>, status_rect: Rect, app: &App) {

src/uis/mod.rs

@@ -2,3 +2,6 @@
 
 pub mod history;
 pub use self::history::render_history_tab;
+
+pub mod new_transaction;
+pub use self::new_transaction::render_new_transaction_tab;

src/uis/new_transaction.rs

@@ -0,0 +1,76 @@
+use crate::app::App;
+use crossterm::event::{Event, KeyEvent, KeyEventKind, KeyCode};
+use ratatui::{backend::Backend, Frame, layout::{Rect, Layout, Direction, Constraint}, widgets::{Paragraph, Borders, Block}, text::Text, style::{Style, Color}};
+
+pub struct NewTransactionTabState<'a> {
+    pub cur_tab_index: usize,
+    pub tabs: Vec<&'a str>,
+}
+
+impl<'a> NewTransactionTabState<'a> {
+    pub fn new() -> NewTransactionTabState<'a> {
+        NewTransactionTabState {
+            cur_tab_index: 1,
+            tabs: vec!["Quick Entry", "Manual Entry"]
+        }
+    }
+
+    pub fn next_tab(&mut self) {
+        self.cur_tab_index = (self.cur_tab_index + 1) % self.tabs.len();
+    }
+
+    pub fn handle_event(event: KeyEvent, app: &mut App) {
+        if event.kind == KeyEventKind::Press {
+            match event.code {
+                KeyCode::Char('q') => app.focus_navigation(),
+                KeyCode::Tab => app.new_transaction_tab_state.next_tab(),
+                // KeyCode::Right => app.next(),
+                // KeyCode::Left => app.previous(),
+                _ => {}
+            }
+        }
+
+    }
+}
+
+pub fn render_new_transaction_tab<B: Backend> (f: &mut Frame<B>, body_rect: Rect, app: &App) {
+
+    let chunks = Layout::default()
+        .direction(Direction::Vertical)
+        .constraints([Constraint::Length(3), Constraint::Min(0)])
+        .split(body_rect);
+
+    // Render the custom tab bar
+    let mut constraints: Vec<Constraint> = vec![];
+    let tab_percent: u16 = (100 / app.new_transaction_tab_state.tabs.len()) as u16;
+    for _ in  0..app.new_transaction_tab_state.tabs.len() {
+        constraints.push(Constraint::Percentage(tab_percent));
+    }
+
+    let tab_chunks = Layout::default()
+        .direction(Direction::Horizontal)
+        .constraints(constraints)
+        .split(chunks[0]);
+
+    for i in  0..app.new_transaction_tab_state.tabs.len() {
+
+        let tab = Paragraph::new(
+            Text::styled(app.new_transaction_tab_state.tabs[i],
+                        Style::default().fg(Color::White)
+                )
+            )
+            .alignment(ratatui::layout::Alignment::Center)
+            .block(
+                Block::default()
+                    .borders(Borders::ALL)
+                    .style({
+                        if app.new_transaction_tab_state.cur_tab_index == i {
+                            Style::default().bg(Color::Blue)
+                        } else {
+                            Style::default()
+                        }
+                    })
+            );
+        f.render_widget(tab, tab_chunks[i])
+    }
+}