From 417cee4eeeaf7516dfeb59cdbe34fed18f30e0f7 Mon Sep 17 00:00:00 2001
From: Nathan Reiner <nathan@nathanreiner.xyz>
Date: Sun, 28 Jul 2024 12:50:02 +0200
Subject: add statusbar widget

---
 src/widgets/luaeditor/buffer.rs |  8 ++++-
 src/widgets/luaeditor/cursor.rs |  2 +-
 src/widgets/luaeditor/mod.rs    | 71 ++++++++++++++++++++++++++---------------
 3 files changed, 53 insertions(+), 28 deletions(-)

(limited to 'src/widgets/luaeditor')

diff --git a/src/widgets/luaeditor/buffer.rs b/src/widgets/luaeditor/buffer.rs
index 905950e..3f59b6c 100644
--- a/src/widgets/luaeditor/buffer.rs
+++ b/src/widgets/luaeditor/buffer.rs
@@ -2,7 +2,7 @@ use std::str::FromStr;
 
 use super::cursor::{Cursor, CursorMove};
 
-#[derive(Default, Debug)]
+#[derive(Default, Debug, Clone)]
 pub struct Buffer {
     lines: Vec<String>,
     cursor: Cursor,
@@ -157,6 +157,12 @@ impl Buffer {
     pub fn lines(&self) -> &Vec<String> {
         &self.lines
     }
+
+    pub fn set_lines(&mut self, lines: Vec<String>) {
+        self.lines = lines;
+        self.cursor.move_checked(CursorMove::Jump((0, 0)));
+        self.refresh_max();
+    }
 }
 
 impl FromStr for Buffer {
diff --git a/src/widgets/luaeditor/cursor.rs b/src/widgets/luaeditor/cursor.rs
index c4466d0..e051231 100644
--- a/src/widgets/luaeditor/cursor.rs
+++ b/src/widgets/luaeditor/cursor.rs
@@ -11,7 +11,7 @@ pub enum CursorMove {
     Jump((usize, usize)),
 }
 
-#[derive(Default, Debug)]
+#[derive(Default, Debug, Clone)]
 pub struct Cursor {
     x: isize,
     y: isize,
diff --git a/src/widgets/luaeditor/mod.rs b/src/widgets/luaeditor/mod.rs
index 63e3d65..98af9e5 100644
--- a/src/widgets/luaeditor/mod.rs
+++ b/src/widgets/luaeditor/mod.rs
@@ -1,11 +1,8 @@
-use std::str::FromStr;
-
 use ratatui::{
     crossterm::event::{KeyCode, KeyEvent},
-    prelude::BlockExt,
-    style::Stylize,
-    text::ToSpan,
-    widgets::{Block, Widget},
+    style::{Style, Stylize},
+    text::{ToLine, ToSpan},
+    widgets::Widget,
 };
 
 pub mod buffer;
@@ -18,31 +15,27 @@ use tree_sitter_highlight::HighlightConfiguration;
 
 use self::cursor::CursorMove;
 
-pub struct LuaEditor<'a> {
-    block: Option<Block<'a>>,
+use super::statusbar::StatusBar;
+
+pub struct LuaEditor {
+    bar: StatusBar,
     scroll: usize,
     buffer: Buffer,
     highlight_config: HighlightConfiguration,
 }
 
-impl<'a> LuaEditor<'a> {
-    pub fn new<S>(content: S) -> Self
-    where
-        S: AsRef<str>,
-    {
+impl LuaEditor {
+    pub fn new() -> Self {
         Self {
-            block: None,
+            bar: StatusBar::new()
+                .left(" [No Name] ")
+                .left_style(Style::default().on_magenta()),
             scroll: 0,
-            buffer: Buffer::from_str(content.as_ref()).unwrap(),
+            buffer: Buffer::new(),
             highlight_config: treesitter::new_highlight_configuration(),
         }
     }
 
-    pub fn block(mut self, block: Option<Block<'a>>) -> Self {
-        self.block = block;
-        self
-    }
-
     pub fn handle_key_event(&mut self, event: KeyEvent) {
         match event.code {
             KeyCode::Char(c) => self.buffer.insert(c),
@@ -79,30 +72,42 @@ impl<'a> LuaEditor<'a> {
         }
     }
 
+    pub fn set_text<S>(&mut self, content: S)
+    where
+        S: AsRef<str>,
+    {
+        self.buffer
+            .set_lines(content.as_ref().lines().map(|s| s.to_string()).collect())
+    }
+
     pub fn text(&self) -> String {
         self.buffer.lines().join("\n")
     }
 }
 
-impl Widget for &mut LuaEditor<'_> {
+impl Widget for &mut LuaEditor {
     fn render(self, area: ratatui::prelude::Rect, buf: &mut ratatui::prelude::Buffer)
     where
         Self: Sized,
     {
-        self.block.render(area, buf);
-        let inner_area = self.block.inner_if_some(area);
+        self.bar.render(area, buf);
+        let inner_area = self.bar.area(area);
 
         let text = self.text();
         let highlights = treesitter::highlighter_split(text.as_bytes(), &self.highlight_config);
 
-        let mut span_area = inner_area.clone();
+        let nr_width = (self.buffer.lines().len().to_string().len() + 1).max(4) as u16;
+        let mut text_area = inner_area.clone();
+        text_area.x += nr_width;
+
+        let mut span_area = text_area.clone();
         let mut current_line = 0;
 
         for (hl, group) in highlights.iter() {
             if *group == "\n" {
                 if current_line >= self.scroll {
                     span_area.y += 1;
-                    span_area.x = inner_area.x;
+                    span_area.x = text_area.x;
                 }
 
                 current_line += 1;
@@ -118,7 +123,21 @@ impl Widget for &mut LuaEditor<'_> {
             }
         }
 
-        let mut cursor_area = inner_area.clone();
+        for i in self.scroll..self.buffer.lines().len() {
+            let mut nr_area = span_area.clone();
+            nr_area.x = inner_area.x;
+            nr_area.width = nr_width - 1;
+            nr_area.y = inner_area.y + (i - self.scroll) as u16;
+            nr_area.height = 1;
+
+            if !inner_area.contains(nr_area.into()) {
+                break;
+            }
+
+            (i + 1).to_line().right_aligned().render(nr_area, buf);
+        }
+
+        let mut cursor_area = text_area.clone();
         cursor_area.width = 1;
         cursor_area.height = 1;
         cursor_area.y += self.buffer.cursor().y() as u16;
-- 
cgit v1.2.3-70-g09d2