Add ClideTreeView.

src/colors.rs

@@ -26,6 +26,8 @@ pub mod qobject {
         #[qproperty(QColor, editor_highlight)]
         #[qproperty(QColor, gutter)]
         #[qproperty(QColor, explorer_background)]
+        #[qproperty(QColor, explorer_folder)]
+        #[qproperty(QColor, explorer_folder_open)]
         type RustColors = super::RustColorsImpl;
     }
 }
@@ -50,6 +52,8 @@ pub struct RustColorsImpl {
     editor_highlight: QColor,
     gutter: QColor,
     explorer_background: QColor,
+    explorer_folder: QColor,
+    explorer_folder_open: QColor,
 }
 
 impl Default for RustColorsImpl {
@@ -72,6 +76,8 @@ impl Default for RustColorsImpl {
             editor_highlight: QColor::try_from("#ccced3").unwrap(),
             gutter: QColor::try_from("#1e1f22").unwrap(),
             explorer_background: QColor::try_from("#3c3f41").unwrap(),
+            explorer_folder: QColor::try_from("#FFF").unwrap(),
+            explorer_folder_open: QColor::try_from("#FFF").unwrap(),
         }
     }
 }

src/filesystem.rs

@@ -14,19 +14,31 @@ 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;
 
+        #[qinvokable]
+        #[cxx_name = "columnCount"]
+        pub fn column_count(self: &FileSystem, index: &QModelIndex) -> i32;
+
         #[qinvokable]
         #[cxx_name = "readFile"]
         fn read_file(self: &FileSystem, path: &QString) -> QString;
+
+        // TODO: Remove if unused in QML.
+        #[qinvokable]
+        #[cxx_name = "setInitialDirectory"]
+        fn set_initial_directory(self: &FileSystem, path: &QString);
     }
 }
 
 use cxx_qt_lib::{QModelIndex, QString};
+use dirs;
 use std::fs;
+
 pub struct FileSystemImpl {
     file_path: QString,
-    model_index: QModelIndex,
+    root_index: QModelIndex,
 }
 
 // Default is explicit to make the editor open this source file initially.
@@ -34,7 +46,7 @@ impl Default for FileSystemImpl {
     fn default() -> Self {
         Self {
             file_path: QString::from(file!()),
-            model_index: Default::default(),
+            root_index: Default::default(),
         }
     }
 }
@@ -50,4 +62,23 @@ impl qobject::FileSystem {
                 .expect(format!("Failed to read file {}", path).as_str()),
         )
     }
+
+    // There will never be more than one column.
+    pub fn column_count(&self, _index: &QModelIndex) -> i32 {
+        1
+    }
+
+    fn set_initial_directory(&self, path: &QString) {
+        if !path.is_empty()
+            && fs::metadata(path.to_string())
+                .expect(format!("Failed to get metadata for file {}", path).as_str())
+                .is_file()
+        {
+            // Open the file
+            // setRootPa
+        } else {
+            // If the initial directory can't be opened, attempt to find the home directory.
+            // dirs::home_dir()
+        }
+    }
 }