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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 Qt Designer 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 FONTPROPERTYMANAGER_H
#define FONTPROPERTYMANAGER_H

#include <QtCore/QMap>
#include <QtCore/QStringList>
#include <QtGui/QFont>

QT_BEGIN_NAMESPACE

class QtProperty;
class QtVariantPropertyManager;

class QString;
class QVariant;

namespace qdesigner_internal {

/* FontPropertyManager: A mixin for DesignerPropertyManager that manages font
 * properties. Adds an antialiasing subproperty and reset flags/mask handling
 * for the other subproperties. It also modifies the font family
 * enumeration names, which it reads from an XML mapping file that
 * contains annotations indicating the platform the font is available on. */

class FontPropertyManager {
    Q_DISABLE_COPY(FontPropertyManager)

public:
    FontPropertyManager();

    typedef QMap<QtProperty *, bool> ResetMap;
    typedef QMap<QString, QString> NameMap;

    // Call before QtVariantPropertyManager::initializeProperty.
    void preInitializeProperty(QtProperty *property, int type, ResetMap &resetMap);
    // Call after QtVariantPropertyManager::initializeProperty. This will trigger
    // a recursion for the sub properties
    void postInitializeProperty(QtVariantPropertyManager *vm, QtProperty *property, int type, int enumTypeId);

    bool uninitializeProperty(QtProperty *property);

    // Call from  QtPropertyManager's propertyDestroyed signal
    void slotPropertyDestroyed(QtProperty *property);

    bool resetFontSubProperty(QtVariantPropertyManager *vm, QtProperty *subProperty);

    // Call from slotValueChanged().
    enum ValueChangedResult { NoMatch, Unchanged, Changed };
    ValueChangedResult valueChanged(QtVariantPropertyManager *vm, QtProperty *property, const QVariant &value);

    // Call from setValue() before calling setValue() on  QtVariantPropertyManager.
    void setValue(QtVariantPropertyManager *vm, QtProperty *property, const QVariant &value);

    static bool readFamilyMapping(NameMap *rc, QString *errorMessage);

private:
    typedef QMap<QtProperty *, QtProperty *> PropertyToPropertyMap;
    typedef QList<QtProperty *> PropertyList;
    typedef QMap<QtProperty *, PropertyList>  PropertyToSubPropertiesMap;

    void removeAntialiasingProperty(QtProperty *);
    void updateModifiedState(QtProperty *property, const QVariant &value);
    static int antialiasingToIndex(QFont::StyleStrategy antialias);
    static QFont::StyleStrategy indexToAntialiasing(int idx);
    static unsigned fontFlag(int idx);

    PropertyToPropertyMap m_propertyToAntialiasing;
    PropertyToPropertyMap m_antialiasingToProperty;

    PropertyToSubPropertiesMap m_propertyToFontSubProperties;
    QMap<QtProperty *, int> m_fontSubPropertyToFlag;
    PropertyToPropertyMap m_fontSubPropertyToProperty;
    QtProperty *m_createdFontProperty;
    QStringList m_aliasingEnumNames;
    // Font families with Designer annotations
    QStringList m_designerFamilyNames;
    NameMap m_familyMappings;
};

}

QT_END_NAMESPACE

#endif // FONTPROPERTYMANAGER_H