Add shutdown widget.

src/windows/MainWindow.h

@@ -19,6 +19,7 @@ class QSwipeGesture;
 class QPanGesture;
 class QDockWidget;
 class InitializeWidget;
+class ShutdownWidget;
 
 class MainWindow : public QMainWindow
 {
@@ -53,6 +54,8 @@ private:
     void swipeTriggered(QSwipeGesture* aSwipeGesture);
     void panTriggered(QPanGesture* aPanGesture);
     void loadStyleSheet(const QString& aSheetName);
+    void showShutdownWidget();
+    void processShutdownDmsFailed();
 
 private:
     Ui::MainWindow* mUI;
@@ -60,6 +63,8 @@ private:
     QTextEdit* mDebugMessageConsole;
     QTabWidget* mTabWidget;
     InitializeWidget* mInitializWidget;
+    ShutdownWidget* mShutdownWidget;
+
     int mAdminTabIndex;
     QThread* mThread;
     bool mIsDebugMode;