1 files changed, 68 insertions, 0 deletions
diff --git a/src/util/menu.rs b/src/util/menu.rs
new file mode 100644
index 0000000..a1be30a
--- /dev/null
+++ b/src/util/menu.rs
@@ -0,0 +1,68 @@
+use std::io::{self, Write};
+use std::iter::Iterator;
+
+use termion::clear;
+use termion::cursor::Goto;
+use termion::event::Key;
+use termion::input::TermRead;
+use termion::raw::IntoRawMode;
+use termion::screen::AlternateScreen;
+use tui::backend::{Backend, TermionBackend};
+use tui::layout::{Constraint, Direction, Layout, Rect};
+use tui::style::{Color, Style};
+use tui::widgets::{Block, Borders, List, Paragraph, Text, Widget};
+use tui::Terminal;
+use unicode_width::UnicodeWidthStr;
+
+use crate::ui::TuiBackend;
+use crate::util::event::{Event, Events};
+
+pub struct OptionMenu<'a> {
+    backend: &'a mut TuiBackend,
+    events: &'a Events
+}
+
+impl<'a> OptionMenu<'a> {
+    pub fn new(backend: &'a mut TuiBackend,
+            events: &'a Events) -> Self {
+        Self { backend, events }
+    }
+
+    pub fn get_option(&mut self, options: &[&str]) -> Option<Key> {
+        let events = self.events;
+
+        // initially, clear the line for textfield and move the cursor there as well
+        let f_size = {
+            let frame = self.backend.terminal.get_frame();
+            frame.size()
+        };
+        let txt_y = if f_size.height < options.len() as u16 {
+            0
+        } else {
+            f_size.height - options.len() as u16
+        };
+
+        let termion_terminal = self.backend.terminal.backend_mut();
+
+        write!(termion_terminal, "{}", Goto(1, txt_y));
+        for (i, option) in options.iter().enumerate() {
+            write!(termion_terminal, "{}{}{}",
+                option, Goto(1, txt_y + i as u16), clear::AfterCursor);
+        }
+        io::stdout().flush().ok();
+
+        loop {
+            eprintln!("menu loop");
+            let event = events.next();
+            if let Ok(event) = event {
+                match event {
+                    Event::Input(input) => match input {
+                        Key::Esc => return None,
+                        key => return Some(key),
+                    },
+                    _ => {},
+                }
+            }
+        }
+    }
+}