2 files changed, 25 insertions, 2 deletions
diff --git a/qtmips_gui/mainwindow.cpp b/qtmips_gui/mainwindow.cpp
index db9acce..932a6be 100644
--- a/qtmips_gui/mainwindow.cpp
+++ b/qtmips_gui/mainwindow.cpp
@@ -60,6 +60,7 @@
 #endif
 
 MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) {
+    ignore_unsaved = false;
     machine = nullptr;
     corescene = nullptr;
     current_srceditor = nullptr;
@@ -431,10 +432,30 @@ void MainWindow::view_mnemonics_registers(bool enable) {
     program->request_update_all();
 }
 
-void MainWindow::closeEvent(QCloseEvent *event __attribute__((unused))) {
+void MainWindow::closeEvent(QCloseEvent *event) {
     settings->setValue("windowGeometry", saveGeometry());
     settings->setValue("windowState", saveState());
     settings->sync();
+
+    QStringList list;
+    if (modified_file_list(list) && !ignore_unsaved) {
+        SaveChnagedDialog *dialog = new SaveChnagedDialog(list, this);
+        connect(dialog, SIGNAL(user_decision(bool,QStringList&)),
+                this, SLOT(save_exit_or_ignore(bool,QStringList&)));
+        dialog->open();
+        event->ignore();
+    }
+}
+
+void MainWindow::save_exit_or_ignore(bool cancel, QStringList &tosavelist) {
+    if (cancel)
+        return;
+    for (const auto &fname : tosavelist) {
+        SrcEditor *editor = source_editor_for_file(fname, false);
+        editor->saveFile();
+    }
+    ignore_unsaved = true;
+    close();
 }
 
 void MainWindow::show_dockwidget(QDockWidget *dw, Qt::DockWidgetArea area) {
diff --git a/qtmips_gui/mainwindow.h b/qtmips_gui/mainwindow.h
index 09c82fd..1a854e6 100644
--- a/qtmips_gui/mainwindow.h
+++ b/qtmips_gui/mainwindow.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+// SPDX-License-Identifier: GPL-2.0+
 /*******************************************************************************
  * QtMips - MIPS 32-bit Architecture Subset Simulator
  *
@@ -116,6 +116,7 @@ public slots:
     void tab_widget_destroyed(QObject *obj);
     void view_mnemonics_registers(bool enable);
     void message_selected(messagetype::Type type, QString file, int line, int column, QString text, QString hint);
+    void save_exit_or_ignore(bool cancel, QStringList &tosavelist);
 
 protected:
     void closeEvent(QCloseEvent *event);
@@ -158,6 +159,7 @@ private:
     bool modified_file_list(QStringList &list);
     SrcEditor *source_editor_for_file(QString filename, bool open);
     QPointer<ExtProcess> build_process;
+    bool ignore_unsaved;
 };
 
 #endif // MAINWINDOW_H