Initial commit

examples/example.rs

@@ -0,0 +1,98 @@
+mod util;
+
+use crate::util::{
+    event::{Event, Events},
+    StatefulTree,
+};
+use std::{error::Error, io};
+use termion::{event::Key, input::MouseTerminal, raw::IntoRawMode, screen::AlternateScreen};
+use tui::{
+    backend::TermionBackend,
+    style::{Color, Modifier, Style},
+    widgets::{Block, Borders},
+    Terminal,
+};
+
+use tui_tree_widget::{Tree, TreeItem};
+
+struct App<'a> {
+    tree: StatefulTree<'a>,
+}
+
+impl<'a> App<'a> {
+    fn new() -> App<'a> {
+        App {
+            tree: StatefulTree::with_items(vec![
+                TreeItem::new_leaf("a"),
+                TreeItem::new(
+                    "b",
+                    vec![
+                        TreeItem::new_leaf("c"),
+                        TreeItem::new("d", vec![TreeItem::new_leaf("e"), TreeItem::new_leaf("f")]),
+                        TreeItem::new_leaf("g"),
+                    ],
+                ),
+                TreeItem::new_leaf("h"),
+            ]),
+        }
+    }
+}
+
+fn main() -> Result<(), Box<dyn Error>> {
+    // Terminal initialization
+    let stdout = io::stdout().into_raw_mode()?;
+    let stdout = MouseTerminal::from(stdout);
+    let stdout = AlternateScreen::from(stdout);
+    let backend = TermionBackend::new(stdout);
+    let mut terminal = Terminal::new(backend)?;
+
+    let events = Events::new();
+
+    // App
+    let mut app = App::new();
+
+    loop {
+        terminal.draw(|f| {
+            let area = f.size();
+
+            let items = Tree::new(app.tree.items.to_vec())
+                .block(
+                    Block::default()
+                        .borders(Borders::ALL)
+                        .title(format!("Tree Widget {:?}", app.tree.state)),
+                )
+                .highlight_style(
+                    Style::default()
+                        .fg(Color::Black)
+                        .bg(Color::LightGreen)
+                        .add_modifier(Modifier::BOLD),
+                )
+                .highlight_symbol(">> ");
+            f.render_stateful_widget(items, area, &mut app.tree.state);
+        })?;
+
+        match events.next()? {
+            Event::Input(input) => match input {
+                Key::Char('q') => {
+                    break;
+                }
+                Key::Left => {
+                    app.tree.close();
+                }
+                Key::Right => {
+                    app.tree.open();
+                }
+                Key::Down => {
+                    app.tree.next();
+                }
+                Key::Up => {
+                    app.tree.previous();
+                }
+                _ => {}
+            },
+            Event::Tick => {}
+        }
+    }
+
+    Ok(())
+}