Update breadcrumbs when root directory changes.

src/gui/filesystem.rs

@@ -2,6 +2,19 @@
 //
 // SPDX-License-Identifier: GNU General Public License v3.0 or later
 
+use cxx_qt_lib::{QModelIndex, QString};
+use dirs;
+use log::warn;
+use std::fs;
+use std::path::Path;
+use syntect::easy::HighlightLines;
+use syntect::highlighting::ThemeSet;
+use syntect::html::{
+    IncludeBackground, append_highlighted_html_for_styled_line, start_highlighted_html_snippet,
+};
+use syntect::parsing::SyntaxSet;
+use syntect::util::LinesWithEndings;
+
 #[cxx_qt::bridge]
 pub mod qobject {
     unsafe extern "C++" {
@@ -21,7 +34,6 @@ pub mod qobject {
         #[qml_element]
         #[qml_singleton]
         #[qproperty(QString, file_path, cxx_name = "filePath")]
-        #[qproperty(QModelIndex, root_index, cxx_name = "rootIndex")]
         type FileSystem = super::FileSystemImpl;
 
         #[inherit]
@@ -43,24 +55,9 @@ pub mod qobject {
     }
 }
 
-use cxx_qt_lib::{QModelIndex, QString};
-use dirs;
-use log::warn;
-use std::fs;
-use std::io::BufRead;
-use std::path::Path;
-use syntect::easy::{HighlightFile, HighlightLines};
-use syntect::highlighting::ThemeSet;
-use syntect::html::{
-    IncludeBackground, append_highlighted_html_for_styled_line, start_highlighted_html_snippet,
-};
-use syntect::parsing::SyntaxSet;
-use syntect::util::LinesWithEndings;
-
 // TODO: Implement a provider for QFileSystemModel::setIconProvider for icons.
 pub struct FileSystemImpl {
     file_path: QString,
-    root_index: QModelIndex,
 }
 
 // Default is explicit to make the editor open this source file initially.
@@ -68,7 +65,6 @@ impl Default for FileSystemImpl {
     fn default() -> Self {
         Self {
             file_path: QString::from(file!()),
-            root_index: Default::default(),
         }
     }
 }
@@ -134,14 +130,13 @@ impl qobject::FileSystem {
             self.set_root_path(path)
         } else {
             // If the initial directory can't be opened, attempt to find the home directory.
-            self.set_root_path(&QString::from(
-                dirs::home_dir()
-                    .expect("Failed to get home directory")
-                    .as_path()
-                    .to_str()
-                    .unwrap()
-                    .to_string(),
-            ))
+            let homedir = dirs::home_dir()
+                .expect("Failed to get home directory")
+                .as_path()
+                .to_str()
+                .unwrap()
+                .to_string();
+            self.set_root_path(&QString::from(homedir))
         }
     }
 }