show unsaved changes

src/editor.rs

@@ -25,6 +25,7 @@ pub struct Editor {
 	clipboard: Clipboard,
 	path: Option<String>,
 	active: bool,
+	unsaved_changes: bool,
 }
 
 #[derive(Debug)]
@@ -48,6 +49,7 @@ impl Editor {
 			clipboard,
 			path: Some(path),
 			active: false,
+			unsaved_changes: false,
 		};
 		this.find_lines();
 		this
@@ -63,6 +65,7 @@ impl Editor {
 			clipboard,
 			path: None,
 			active: false,
+			unsaved_changes: true,
 		}
 	}
 
@@ -70,6 +73,10 @@ impl Editor {
 		self.path.as_ref().map_or("untitled", |s| s)
 	}
 
+	pub fn has_unsaved_changes(&self) -> bool {
+		self.unsaved_changes
+	}
+
 	pub fn open(&mut self) {
 		self.active = true;
 
@@ -258,6 +265,7 @@ impl Editor {
 	}
 
 	fn insert_char(&mut self, ch: char) {
+		self.unsaved_changes = true;
 		// eprintln!("inserting {ch} at {}", self.index());
 		self.text.insert(self.char_index(), ch);
 		self.find_lines();
@@ -305,6 +313,7 @@ impl Editor {
 	}
 
 	fn paste(&mut self) {
+		self.unsaved_changes = true;
 		let cursor = self.char_index();
 		self.text.insert_str(cursor, &self.clipboard.get());
 		self.find_lines();
@@ -352,6 +361,7 @@ impl Editor {
 		}
 		let mut file = File::create(self.path.as_ref().unwrap()).unwrap();
 		file.write_all(self.text.as_bytes()).unwrap();
+		self.unsaved_changes = false;
 	}
 }
 

src/main.rs

@@ -70,7 +70,12 @@ impl Navigator {
 			if Some(index) == self.selected {
 				print!("{}{}", color::Fg(color::Black), color::Bg(color::White));
 			}
-			print!("{}{}", Goto(2, index as u16 + 2), editor.name());
+			print!(
+				"{}{}{}",
+				Goto(2, index as u16 + 2),
+				editor.has_unsaved_changes().then_some("*").unwrap_or(" "),
+				editor.name()
+			);
 			print!("{}{}", color::Fg(color::Reset), color::Bg(color::Reset));
 		}