Settings: Allow nesting instances without breaking groups

Closes #1511

src/lib/app/settings.cpp

@@ -25,8 +25,9 @@ QzSettings* Settings::s_qzSettings = 0;
 
 Settings::Settings()
 {
+    // Save currently opened group
     if (!s_settings->group().isEmpty()) {
-        qDebug("Settings: Creating object with opened group!");
+        m_openedGroup = s_settings->group();
         s_settings->endGroup();
     }
 }
@@ -78,7 +79,11 @@ QzSettings* Settings::staticSettings()
 Settings::~Settings()
 {
     if (!s_settings->group().isEmpty()) {
-        qDebug("Settings: Deleting object with opened group!");
+        qDebug() << "Settings: Deleting object with opened group!";
         s_settings->endGroup();
     }
+
+    // Restore opened group
+    if (!m_openedGroup.isEmpty())
+        s_settings->beginGroup(m_openedGroup);
 }

src/lib/app/settings.h

@@ -18,7 +18,6 @@
 #ifndef SETTINGS_H
 #define SETTINGS_H
 
-#include <qglobal.h>
 #include <QVariant>
 
 #include "qzcommon.h"
@@ -45,14 +44,12 @@ public:
     void beginGroup(const QString &prefix);
     void endGroup();
 
-signals:
-
-public slots:
-
 private:
     static QSettings* s_settings;
     static QzSettings* s_qzSettings;
 
+    QString m_openedGroup;
+
 };
 
 #endif // SETTINGS_H