feat: add highlighting to editor

rustfmt.toml

@@ -0,0 +1 @@
+tab_spaces = 2

src/components/editor.rs

@@ -1,5 +1,5 @@
 use iced::{
-    Element, Length, Theme,
+  Element, Length, Theme, highlighter,
   widget::{container, markdown, row, text_editor},
 };
 
@@ -9,6 +9,7 @@ pub fn view<'a>(file: &'a File, mode: Mode, font_size: u32) -> Element<'a, Messa
   match mode {
     Mode::Edit => {
       let editor = text_editor(file.content())
+        .highlight(file.extension().unwrap_or("txt"), highlighter::Theme::Base16Ocean)
         .size(font_size)
         .height(Length::Fill)
         .on_action(Message::Edit);
@@ -21,8 +22,7 @@ pub fn view<'a>(file: &'a File, mode: Mode, font_size: u32) -> Element<'a, Messa
 
       let settings = markdown::Settings::with_text_size(font_size, style);
 
-            let markdown_preview =
+      let markdown_preview = markdown::view(file.markdown(), settings).map(Message::LinkClicked);
-                markdown::view(file.markdown(), settings).map(Message::LinkClicked);
 
       container(row![markdown_preview])
         .height(Length::Fill)

src/file.rs

@@ -1,4 +1,4 @@
-use std::path::PathBuf;
+use std::{ffi, path::{Path, PathBuf}};
 
 use iced::widget::{markdown, text_editor};
 
@@ -58,6 +58,13 @@ impl File {
         self.path = path;
     }
 
+    pub fn extension(&self) -> Option<&str> {
+        self.path
+            .as_deref()
+            .and_then(Path::extension)
+            .and_then(ffi::OsStr::to_str)
+    }
+
     pub fn display_name(&self) -> &str {
         self.path
             .as_deref()