Add file tree view

src/fileview/fileviewtreeitem.h

@@ -0,0 +1,52 @@
+/*
+ * Strawberry Music Player
+ * Copyright 2025, Jonas Kvinge <jonas@jkvinge.net>
+ *
+ * Strawberry is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Strawberry is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef FILEVIEWTREEITEM_H
+#define FILEVIEWTREEITEM_H
+
+#include "config.h"
+
+#include <QFileInfo>
+
+#include "core/simpletreeitem.h"
+
+class FileViewTreeItem : public SimpleTreeItem<FileViewTreeItem> {
+ public:
+  enum class Type {
+    Root,          // Hidden root
+    VirtualRoot,   // User-configured root paths
+    Directory,     // File system directory
+    File           // File system file
+  };
+
+  explicit FileViewTreeItem(SimpleTreeModel<FileViewTreeItem> *_model) : SimpleTreeItem<FileViewTreeItem>(_model), type(Type::Root), lazy_loaded(false) {}
+  explicit FileViewTreeItem(const Type _type, FileViewTreeItem *_parent = nullptr) : SimpleTreeItem<FileViewTreeItem>(_parent), type(_type), lazy_loaded(false) {}
+
+  Type type;
+  QString file_path;        // Absolute file system path
+  QFileInfo file_info;      // Cached file info
+  bool lazy_loaded;         // Whether children have been loaded
+
+ private:
+  Q_DISABLE_COPY(FileViewTreeItem)
+};
+
+Q_DECLARE_METATYPE(FileViewTreeItem::Type)
+
+#endif  // FILEVIEWTREEITEM_H