prevent opening the same file multiple times

src/editor.rs

@@ -93,6 +93,10 @@ impl Editor {
 		"untitled".into()
 	}
 
+	pub fn path(&self) -> Option<&PathBuf> {
+		self.path.as_ref()
+	}
+
 	pub fn has_unsaved_changes(&self) -> bool {
 		self.unsaved_changes
 	}
@@ -240,7 +244,7 @@ impl Editor {
 			self.cursor.line -= 1;
 			self.cursor.column = self.current_line().len();
 		}
-		self.scroll_to_cursor()
+		self.scroll_to_cursor();
 	}
 
 	fn move_right(&mut self) {
@@ -250,7 +254,7 @@ impl Editor {
 			self.cursor.line += 1;
 			self.cursor.column = 0;
 		}
-		self.scroll_to_cursor()
+		self.scroll_to_cursor();
 	}
 
 	fn move_up(&mut self, lines: usize) {

src/main.rs

@@ -169,14 +169,25 @@ impl Navigator {
 					env::set_current_dir(&self.path).unwrap();
 					self.selected = self.editors.len();
 				} else if path.is_file() {
+					let path = path.canonicalize().unwrap();
+					self.selected = self.editors.len();
+					for (i, editor) in self.editors.iter().enumerate() {
+						if editor.path() == Some(&path) {
+							self.selected = i;
+							break;
+						}
+					}
+					if self.selected == self.editors.len() {
 						if let Some(editor) =
 							Editor::open_file(self.clipboard.clone(), path.canonicalize().unwrap())
 						{
-						self.selected = self.editors.len();
 							self.editors.push(editor);
-						self.open_selected();
+						} else {
+							return;
 						}
 					}
+					self.open_selected();
+				}
 			}
 		}
 	}