menu and directory chooser

src/cpp/qtapp/main.cpp

@@ -36,6 +36,9 @@
 #include <QStringList>
 #include <QListView>
 #include <QWindow>
+#include <QMenuBar>
+#include <QMenu>
+#include <QFileDialog>
 #include <qabstractitemmodel.h>
 
 #include "api.h"
@@ -73,7 +76,8 @@ struct Page {
 };
 
 QString                  workingPath   = "/home/jorenchik/Code/mdemory/memorybase";
-std::string              currentPath   = "";
+std::string              currentPath   = "/home/jorenchik/Code/mdemory/memorybase";
+QFileSystemModel        *model;
 
 // Mdem list
 QLabel                  *deckListLabel;
@@ -462,8 +466,30 @@ int main(int argc, char *argv[]) {
     QApplication app(argc, argv);
     QMainWindow window;
 
-    QSplitter *hSplitter = new QSplitter();
+	QMenuBar *menuBar = new QMenuBar;
+	QFileDialog *fileDialog = new QFileDialog;
 
+	QMenu *menu = new QMenu("File");
+	QAction *actionOpen = menu->addAction("Open memorybase");
+	QObject::connect(actionOpen, &QAction::triggered, [fileDialog]() {
+		fileDialog->setDirectory(QDir::homePath());
+		fileDialog->setFileMode(QFileDialog::FileMode::Directory);
+		fileDialog->open();
+		QObject::disconnect(fileDialog, 0, 0, 0);		
+		fileDialog->connect(
+			fileDialog,
+			&QFileDialog::fileSelected,
+			[](QString directory
+		) {
+			workingPath = directory;
+			model->setRootPath(workingPath);
+		});
+	});
+	menuBar->addMenu(menu);
+
+	window.setMenuBar(menuBar);
+
+    QSplitter *hSplitter = new QSplitter();
 
     // LeftSide
     QWidget          *leftWidget = new QWidget();
@@ -471,8 +497,11 @@ int main(int argc, char *argv[]) {
     QWidget          *leftTop    = new QWidget();
     QVBoxLayout      *vLeftTop   = new QVBoxLayout();
     QLabel           *mdemLabel  = new QLabel("mdems");
-    QFileSystemModel *model      = new QFileSystemModel();
     QTreeView        *mdemList   = new QTreeView();
+    model                        = new QFileSystemModel();
+	if (workingPath.length() > 0) {
+		model->setRootPath(workingPath);
+	}
 	mdemLabel->setStyleSheet(
 		"font-size: 17px;"
 		"font-weight: 400;"
@@ -484,14 +513,13 @@ int main(int argc, char *argv[]) {
 	leftTop->setLayout(vLeftTop);
 	leftTop->setMinimumSize(0, 40);
 	vLeftTop->addWidget(mdemLabel);
-    model->setRootPath(workingPath);
 	// Hide all columns except the first one
     mdemList->setModel(model);
 
 	QObject::connect(
 		mdemList,
 		&QTreeView::doubleClicked,
-		[model](const QModelIndex &index) {
+		[](const QModelIndex &index) {
 			auto fileInfo = model->fileInfo(index);
 			currentPath = fileInfo.filePath().toStdString();
 			loadMdem();