Long live Qt 4.5!

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diff --git a/tools/qconfig/feature.h b/tools/qconfig/feature.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the tools applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef FEATURE_H
+#define FEATURE_H
+
+#include <QString>
+#include <QStringList>
+#include <QMap>
+#include <QSet>
+#include <QList>
+
+QT_BEGIN_NAMESPACE
+
+class Feature;
+
+class FeaturePrivate
+{
+public:
+    FeaturePrivate(const QString &k)
+	: key(k), enabled(true), selectable(true) {};
+    
+    const QString key;
+    QString section;
+    QString title;
+    QString description;
+    QSet<Feature*> dependencies;
+    QSet<Feature*> supports; // features who depends on this one
+    QSet<Feature*> relations;
+    bool enabled;
+    bool selectable;
+};
+
+class Feature : public QObject
+{
+    Q_OBJECT    
+
+public:
+    static Feature* getInstance(const QString &key);
+    static void clear();
+
+public:
+    QString key() const { return d->key; }
+
+    void setTitle(const QString &title);
+    QString title() const { return d->title; }
+
+    void setSection(const QString &section);
+    QString section() const { return d->section; }
+
+    void setDescription(const QString &description);    
+    QString description() const { return d->description; };
+
+    void addRelation(const QString &key);
+    void setRelations(const QStringList &keys);
+    QList<Feature*> relations() const;    
+
+    void addDependency(const QString &dependency);
+    void setDependencies(const QStringList &dependencies);
+    QList<Feature*> dependencies() const;
+
+    QList<Feature*> supports() const;    
+    QString getDocumentation() const;
+
+    void setEnabled(bool on);
+    bool enabled() const { return d->enabled; };
+
+    bool selectable() const { return d->selectable; }
+    
+    QString toHtml() const;    
+    
+    ~Feature();    
+
+signals:
+    void changed();
+    
+private:
+    Feature(const QString &key);
+    void updateSelectable();
+    
+    static QMap<QString, Feature*> instances;
+    FeaturePrivate *d;
+};
+
+QT_END_NAMESPACE
+
+#endif // FEATURE_H