[tui] Add basic component trait.

src/main.rs

@@ -6,7 +6,6 @@ use structopt::StructOpt;
 
 pub mod gui;
 pub mod tui;
-
 /// Command line interface IDE with full GUI and headless modes.
 /// If no flags are provided, the GUI editor is launched in a separate process.
 /// If no path is provided, the current directory is used.

src/tui.rs

@@ -1,4 +1,5 @@
 pub mod app;
+mod component;
 mod explorer;
 
 use anyhow::{Context, Result};

src/tui/app.rs

@@ -1,16 +1,12 @@
-use anyhow::Context;
+use crate::tui::component::{Action, ClideComponent};
+use crate::tui::explorer::Explorer;
 use ratatui::buffer::Buffer;
-use ratatui::crossterm::event;
-use ratatui::crossterm::event::{Event, KeyCode};
 use ratatui::layout::{Constraint, Direction, Layout, Rect};
 use ratatui::prelude::{Color, Style, Widget};
 use ratatui::widgets::{Block, Borders, Padding, Paragraph, Tabs, Wrap};
 use ratatui::{DefaultTerminal, symbols};
-use std::time::Duration;
 
-use crate::tui::explorer::Explorer;
+#[derive(Debug, Clone)]
-
-#[derive(Debug, Clone, Copy)]
 pub struct App<'a> {
     explorer: Explorer<'a>,
 }
@@ -24,37 +20,29 @@ impl<'a> App<'a> {
 
     pub fn run(mut self, mut terminal: DefaultTerminal) -> anyhow::Result<()> {
         loop {
-            terminal.draw(|f| f.render_widget(self, f.area()))?;
+            terminal.draw(|f| {
-            if self.should_quit()? {
+                f.render_widget(&self, f.area());
-                break;
+            })?;
+
+            // TODO: Handle events based on which component is active.
+            //   match self.explorer.handle_events() { ... }
+            match self.handle_events() {
+                Action::Quit => break,
+                _ => {}
             }
-            self.handle_events()?;
         }
         Ok(())
     }
 
-    fn handle_events(&mut self) -> anyhow::Result<()> {
+    fn draw_status(&self, area: Rect, buf: &mut Buffer) {
-        // Handle other keyboard events here, aside from quitting.
+        // TODO: Status bar should have drop down menus
-        Ok(())
-    }
-
-    fn should_quit(self) -> anyhow::Result<bool> {
-        if event::poll(Duration::from_millis(250)).context("event poll failed")? {
-            if let Event::Key(key) = event::read().context("event read failed")? {
-                return Ok(KeyCode::Char('q') == key.code);
-            }
-        }
-        Ok(false)
-    }
-
-    fn draw_status(self, area: Rect, buf: &mut Buffer) {
         Tabs::new(["File", "Edit", "View", "Help"])
             .style(Style::default())
             .block(Block::default().borders(Borders::ALL))
             .render(area, buf);
     }
 
-    fn draw_tabs(self, area: Rect, buf: &mut Buffer) {
+    fn draw_tabs(&self, area: Rect, buf: &mut Buffer) {
         // TODO: Tabs should be opened from file explorer
         Tabs::new(["file.md", "file.cpp"])
             .divider(symbols::DOT)
@@ -67,7 +55,7 @@ impl<'a> App<'a> {
             .render(area, buf);
     }
 
-    fn draw_editor(self, area: Rect, buf: &mut Buffer) {
+    fn draw_editor(&self, area: Rect, buf: &mut Buffer) {
         // TODO: Title should be detected programming language name
         // TODO: Content should be file contents
         // TODO: Contents should use vim in rendered TTY
@@ -85,7 +73,7 @@ impl<'a> App<'a> {
             .render(area, buf);
     }
 
-    fn draw_terminal(self, area: Rect, buf: &mut Buffer) {
+    fn draw_terminal(&self, area: Rect, buf: &mut Buffer) {
         // TODO: Title should be detected shell name
         // TODO: Contents should be shell output
         Paragraph::new("shaun@pc:~/Code/clide$ ")
@@ -102,7 +90,7 @@ impl<'a> App<'a> {
 }
 
 // TODO: Separate complex components into their own widgets.
-impl<'a> Widget for App<'a> {
+impl<'a> Widget for &App<'a> {
     fn render(self, area: Rect, buf: &mut Buffer)
     where
         Self: Sized,
@@ -128,16 +116,18 @@ impl<'a> Widget for App<'a> {
             .direction(Direction::Vertical)
             .constraints([
                 Constraint::Length(1), // Editor tabs.
-                Constraint::Fill(1),
+                Constraint::Fill(1),   // Editor contents.
             ])
             .split(horizontal[1]);
 
         self.draw_status(vertical[0], buf);
         self.draw_terminal(vertical[2], buf);
 
-        self.explorer.draw(horizontal[0], buf);
+        self.explorer.render(horizontal[0], buf);
 
         self.draw_tabs(editor_layout[0], buf);
         self.draw_editor(editor_layout[1], buf);
     }
 }
+
+impl<'a> ClideComponent for App<'a> {}

src/tui/component.rs

@@ -0,0 +1,40 @@
+use ratatui::crossterm::event;
+use ratatui::crossterm::event::{Event, KeyCode, KeyEvent, MouseEvent};
+use std::time::Duration;
+
+pub enum Action {
+    Noop,
+    Quit,
+}
+
+pub trait ClideComponent {
+    fn handle_events(&mut self) -> Action {
+        if !event::poll(Duration::from_millis(250)).expect("event poll failed") {
+            return Action::Noop;
+        }
+
+        let key_event = event::read().expect("event read failed");
+        match key_event {
+            Event::Key(key_event) => self.handle_key_events(key_event),
+            Event::Mouse(mouse_event) => self.handle_mouse_events(mouse_event),
+            _ => Action::Noop,
+        }
+    }
+
+    fn handle_key_events(&mut self, key: KeyEvent) -> Action {
+        match key.code {
+            KeyCode::Char('q') => Action::Quit,
+            _ => Action::Noop,
+        }
+    }
+
+    fn handle_mouse_events(&mut self, mouse: MouseEvent) -> Action {
+        Action::Noop
+    }
+
+    fn update(&mut self, action: Action) -> Action {
+        Action::Noop
+    }
+
+    // fn render(&mut self, area: Rect, buf: &mut Buffer);
+}

src/tui/explorer.rs

@@ -1,29 +1,29 @@
-use std::fs;
+use crate::tui::component::ClideComponent;
+use anyhow::Result;
 use ratatui::buffer::Buffer;
 use ratatui::layout::Rect;
 use ratatui::prelude::Style;
 use ratatui::widgets::{Block, Borders, Widget};
+use std::fs;
 use tui_tree_widget::{Tree, TreeItem};
 use uuid::Uuid;
 
-#[derive(Clone, Copy, Debug)]
+#[derive(Clone, Debug)]
 pub struct Explorer<'a> {
     root_path: &'a std::path::Path,
+    tree_items: TreeItem<'a, String>,
 }
 
 impl<'a> Explorer<'a> {
     pub fn new(path: &'a std::path::Path) -> Self {
-        Explorer { root_path: path }
+        let mut explorer = Explorer {
+            root_path: path,
+            tree_items: Self::build_tree_from_path(path.into()),
+        };
+        explorer
     }
 
-    pub fn draw(self, area: Rect, buf: &mut Buffer) {
+    pub fn draw(&self, area: Rect, buf: &mut Buffer) {}
-        let tree_item = Self::build_tree_from_path(self.root_path.to_path_buf());
-        Tree::new(&tree_item.children())
-            .expect("Failed to build tree.")
-            .style(Style::default())
-            .block(Block::default().borders(Borders::ALL))
-            .render(area, buf);
-    }
 
     fn build_tree_from_path(path: std::path::PathBuf) -> TreeItem<'static, String> {
         let mut children = vec![];
@@ -56,3 +56,15 @@ impl<'a> Explorer<'a> {
         .expect("Failed to build tree from path.")
     }
 }
+
+impl<'a> Widget for &Explorer<'a> {
+    fn render(self, area: Rect, buf: &mut Buffer) {
+        Tree::new(&self.tree_items.children())
+            .expect("Failed to build tree.")
+            .style(Style::default())
+            .block(Block::default().borders(Borders::ALL))
+            .render(area, buf);
+    }
+}
+
+impl<'a> ClideComponent for Explorer<'a> {}