feat: word list UI implemented

src/main.rs

@@ -46,9 +46,4 @@ fn main() -> io::Result<()> {
             ));
         }
     }
-
-    Err(Error::new(
-        io::ErrorKind::Interrupted,
-        "Exit with abnormal procedure.",
-    ))
 }

src/modules/ui/app.rs

@@ -8,7 +8,7 @@ use ratatui::{
     layout::{Constraint, Direction, Flex, Layout},
     style::{Color, Style},
     text::Text,
-    widgets::{Block, Borders, Paragraph},
+    widgets::{Block, Borders, List, ListDirection, ListItem, ListState, Padding, Paragraph},
 };
 use std::io;
 
@@ -22,10 +22,14 @@ pub enum UiState {
     DELETE,
 }
 
+pub struct Preferences {
+    help: bool,
+}
+
 pub struct App {
     state: UiState,
     file_database: FileDatabase,
-    scroll_position: usize,
+    list_state: ListState,
     word_list: Vec<Word>,
     word_filter: Option<String>,
     lang_filter: Option<String>,
@@ -39,7 +43,7 @@ impl App {
         Self {
             state: UiState::LIST,
             file_database: db,
-            scroll_position: 0,
+            list_state: ListState::default().with_selected(Some(0)),
             word_list: wl,
             word_filter: None,
             lang_filter: None,
@@ -58,7 +62,7 @@ impl App {
         Ok(())
     }
 
-    fn draw(&self, frame: &mut Frame) {
+    fn draw(&mut self, frame: &mut Frame) {
         let main_layout = Layout::default()
             .direction(Direction::Vertical)
             .spacing(0)
@@ -109,13 +113,35 @@ impl App {
             filters_layout[1],
         );
 
-        frame.render_widget(
+        let word_key_list_items: Vec<ListItem> = self
-            Paragraph::new("Word list").block(Block::new().borders(Borders::ALL).title("Entries")),
+            .word_list
-            words_layout[0],
+            .clone()
-        );
+            .iter()
+            .map(|w| ListItem::new(w.key.clone()))
+            .collect();
 
+        let word_key_list = List::new(word_key_list_items)
+            .direction(ListDirection::TopToBottom)
+            .block(
+                Block::default()
+                    .title("Entries")
+                    .borders(Borders::ALL)
+                    .padding(Padding::horizontal(1)),
+            )
+            .highlight_style(Style::default().fg(Color::default()))
+            .highlight_symbol("> ")
+            .style(Style::default().fg(Color::DarkGray));
+        frame.render_stateful_widget(word_key_list, words_layout[0], &mut self.list_state);
+
+        let scroll_position: usize = {
+            if let Some(i) = self.list_state.selected() {
+                i
+            } else {
+                0
+            }
+        };
         // PERF: do not clone
-        let selected_word = self.word_list.clone().into_iter().nth(self.scroll_position);
+        let selected_word = self.word_list.clone().into_iter().nth(scroll_position);
         if let Some(w) = selected_word {
             frame.render_widget(
                 Paragraph::new(w.description).block(Block::new().borders(Borders::ALL)),
@@ -123,7 +149,7 @@ impl App {
             );
         }
 
-        let help_text = Text::raw("(f)ilter | lan(g) | (d)elete | (e)dit | (a)dd | (q)uit ")
+        let help_text = Text::raw("(f)ilter | (l)ang | (d)elete | (e)dit | (a)dd | (q)uit ")
             .style(Style::new().fg(Color::DarkGray));
         let help_area = help_layout[0].centered(
             Constraint::Length(help_text.width() as u16),
@@ -148,7 +174,7 @@ impl App {
                 self.file_database.get_all_words()
             }
         };
-        self.scroll_position = 0;
+        self.list_state.select(Some(0));
         self.word_list = word_list;
     }
 
@@ -184,7 +210,7 @@ impl App {
                             if c == 'f' || c == '/' {
                                 self.state = UiState::FILTERWORD;
                             }
-                            if c == 'g' {
+                            if c == 'l' {
                                 self.state = UiState::FILTERLANG;
                             }
                             if c == 'd' {
@@ -198,14 +224,10 @@ impl App {
                             }
                             // Movement
                             if c == 'j' {
-                                if self.scroll_position > 0 {
+                                self.list_state.select_next();
-                                    self.scroll_position -= 1;
-                                }
                             }
                             if c == 'k' {
-                                if self.scroll_position < self.word_list.len() - 1 {
+                                self.list_state.select_previous();
-                                    self.scroll_position += 1;
-                                }
                             }
                         }
                     }
@@ -223,7 +245,18 @@ impl App {
                             self.update_word_list();
                         }
                     }
-                    UiState::FILTERLANG => {}
+                    UiState::FILTERLANG => {
+                        if let Some(l) = &self.lang_filter {
+                            if l.len() <= 1 {
+                                self.lang_filter = None;
+                            } else {
+                                let mut new_l = l.clone();
+                                new_l.pop();
+                                self.lang_filter = Some(new_l);
+                            }
+                            self.update_word_list();
+                        }
+                    }
                     _ => {}
                 },
                 event::KeyCode::Esc => {