--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hbcore/style/hbstylevalue.h	Mon Oct 18 18:23:13 2010 +0300
@@ -0,0 +1,144 @@
+/****************************************************************************
+**
+** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (developer.feedback@nokia.com)
+**
+** This file is part of the HbCore module of the UI Extensions for Mobile.
+**
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this file.
+** Please review the following information to ensure the GNU Lesser General
+** Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at developer.feedback@nokia.com.
+**
+****************************************************************************/
+
+#ifndef HBSTYLEVALUE_H
+#define HBSTYLEVALUE_H
+
+#include <QString>
+#include <QVariant>
+#include <hbicon.h>
+
+template<typename T>
+class HbStyleValue
+{
+public:
+    HbStyleValue();
+    ~HbStyleValue();
+
+    bool isSet() const;
+    T value() const;
+    operator T() const;
+    void operator=(const T &value);
+    bool operator!=(const T &value) const;
+    bool operator==(const T &value) const;
+    void clear();
+
+private:
+    bool mSet;
+    T mVal;
+};
+
+template<typename T>
+HbStyleValue<T>::HbStyleValue() : mSet(false)
+{
+}
+
+template<typename T>
+HbStyleValue<T>::~HbStyleValue()
+{
+}
+
+template<typename T>
+bool HbStyleValue<T>::isSet() const
+{
+    return mSet;
+}
+
+template<typename T>
+T HbStyleValue<T>::value() const
+{
+    Q_ASSERT(mSet);
+    return mVal;
+}
+
+template<typename T>
+HbStyleValue<T>::operator T() const
+{
+    Q_ASSERT(mSet);
+    return mVal;
+}
+
+template<typename T>
+void HbStyleValue<T>::operator=(const T &value)
+{
+    mVal = value;
+    mSet = true;
+}
+
+template<typename T>
+void HbStyleValue<T>::clear()
+{
+    mSet = false;
+}
+
+template<typename T>
+bool HbStyleValue<T>::operator!=(const T &value) const
+{
+    if (!mSet) {
+        return true;
+    }
+    return mVal!=value;
+}
+
+template<typename T>
+bool HbStyleValue<T>::operator==(const T &value) const
+{
+    return !(*this!=value);
+}
+
+template<typename T>
+bool operator!=(const T &value, const HbStyleValue<T> &other)
+{
+    return other!=value;
+}
+
+template<typename T>
+inline bool operator==(const T &value, const HbStyleValue<T> &other)
+{
+    return !(other!=value);
+}
+
+template<>
+inline void HbStyleValue<QString>::clear()
+{
+    mSet = false;
+    mVal.clear();
+}
+
+template<>
+inline void HbStyleValue<QVariant>::clear()
+{
+    mSet = false;
+    mVal.clear();
+}
+
+template<>
+inline void HbStyleValue<HbIcon>::clear()
+{
+    mSet = false;
+    mVal.clear();
+}
+
+#endif // HBSTYLEVALUE_H