[Refactor] Replace include guards with #pragma once in MainWindow and Tree headers + change row pointer to smart pointer

Author: chrisdedman

include/MainWindow.h

@@ -1,45 +1,46 @@
-#ifndef MAINWINDOW_H
-#define MAINWINDOW_H
-
-#include "CodeEditor.h"
-#include "Syntax.h"
-#include "Tree.h"
-
-#include <QMainWindow>
-#include <QMenu>
-#include <QAction>
-#include <QIcon>
-#include <QKeySequence>
-
-class MainWindow : public QMainWindow
-{
-    Q_OBJECT
-
-public:
-    explicit MainWindow(QWidget *parent = nullptr);
-    virtual ~MainWindow();
-    void loadFileInEditor(const QString &filePath);
-    void initTree();
-
-private slots:
-    void newFile();
-    void openFile();
-    void saveFile();
-    void saveFileAs();
-    void showAbout();
-
-private:
-    void createMenuBar();
-    void createFileActions(QMenu *fileMenu);
-    void createHelpActions(QMenu *helpMenu);
-    void createAppActions(QMenu *appMenu);
-    QAction *createAction(const QIcon &icon, const QString &text,
-                          const QKeySequence &shortcut, const QString &statusTip,
-                          void (MainWindow::*slot)());
-    CodeEditor *editor;
-    QString currentFileName;
-    Syntax *syntax;
-    Tree *tree;
-};
-
-#endif // MAINWINDOW_H
+#pragma once
+
+#include <QMainWindow>
+#include <QMenu>
+#include <QAction>
+#include <QIcon>
+#include <QKeySequence>
+#include <memory>
+#include <QFile>
+
+class CodeEditor;
+class Syntax;
+class Tree;
+
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    explicit MainWindow(QWidget *parent = nullptr);
+    virtual ~MainWindow();
+    void loadFileInEditor(const QString &filePath);
+    // Initialize the file tree view and set it as the central widget
+    // of the main window, alongside the code editor
+    void initTree();
+
+private slots:
+    void newFile();
+    void openFile();
+    void saveFile();
+    void saveFileAs();
+    void showAbout();
+
+private:
+    void createMenuBar();
+    void createFileActions(QMenu *fileMenu);
+    void createHelpActions(QMenu *helpMenu);
+    void createAppActions(QMenu *appMenu);
+    QAction *createAction(const QIcon &icon, const QString &text,
+                          const QKeySequence &shortcut, const QString &statusTip,
+                          void (MainWindow::*slot)());
+    std::unique_ptr<CodeEditor> editor;
+    QString currentFileName;
+    std::unique_ptr<Syntax> syntax;
+    std::unique_ptr<Tree> tree;
+};

include/Tree.h

@@ -1,31 +1,33 @@
-#ifndef TREE_H
-#define TREE_H
+#pragma once
 
 #include <QSplitter>
-#include <QTreeView>
-#include <QFileSystemModel>
 #include <QObject>
+#include <memory>
 
-class MainWindow; // Forward declaration
+// Forward declarations
+class MainWindow;
+class QTreeView;
+class QFileSystemModel;
+class QFileIconProvider;
 
 class Tree : public QObject
 {
     Q_OBJECT
 
 public:
-    Tree(QSplitter *splitter, MainWindow *mainWindow);
+    explicit Tree(QSplitter *splitter, MainWindow *mainWindow);
     ~Tree();
 
 private:
     void showContextMenu(const QPoint &pos);
     void setupModel();
     void setupTree();
     void openFile(const QModelIndex &index);
-    QString getDirectoryPath();
+    QString getDirectoryPath() const;
 
-    QFileSystemModel *model;
-    QTreeView *tree;
-    MainWindow *mainWindow;
-};
+    std::unique_ptr<QFileIconProvider> m_iconProvider;
+    std::unique_ptr<QFileSystemModel> m_model;
+    std::unique_ptr<QTreeView> m_tree;
 
-#endif // TREE_H
+    MainWindow *m_mainWindow;
+};