Close databases when they are locked.

Previously we've only hidden access to them.

Closes #275

src/gui/DatabaseWidget.h

@@ -22,6 +22,7 @@
 #include <QStackedWidget>
 
 #include "core/Global.h"
+#include "core/Uuid.h"
 
 #include "gui/entry/EntryModel.h"
 
@@ -78,6 +79,7 @@ public:
     void setSplitterSizes(const QList<int>& sizes);
     QList<int> entryHeaderViewSizes() const;
     void setEntryViewHeaderSizes(const QList<int>& sizes);
+    void clearAllWidgets();
 
 Q_SIGNALS:
     void closeRequest();
@@ -143,6 +145,7 @@ private Q_SLOTS:
 private:
     void setClipboardTextAndMinimize(const QString& text);
     void setIconFromParent();
+    void replaceDatabase(Database* db);
 
     Database* m_db;
     const QScopedPointer<Ui::SearchWidget> m_searchUi;
@@ -164,8 +167,8 @@ private:
     Group* m_newParent;
     Group* m_lastGroup;
     QTimer* m_searchTimer;
-    QWidget* m_widgetBeforeLock;
     QString m_filename;
+    Uuid m_groupBeforeLock;
 };
 
 #endif // KEEPASSX_DATABASEWIDGET_H