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#ifndef DOMTOOL_H

#define DOMTOOL_H

#include <QVariant>

QT_BEGIN_NAMESPACE

class QDomElement;

class QDomDocument;

class QDomNode;

class QDomNodeList;

struct Common

{

    int kind;

    enum {

        Kind_Unknown = 0,

        Kind_Color,

        Kind_Point,

        Kind_Size,

        Kind_Rect,

        Kind_Font,

        Kind_SizePolicy,

        Kind_Cursor

    };

    inline void init()

    { kind = Kind_Unknown; }

};

struct Color

{

    Common common;

    int red, green, blue;

    inline void init(int r, int g, int b)

    {

        common.kind = Common::Kind_Color;

        red = r;

        green = g;

        blue = b;

    }

    inline bool operator == (const Color &other) const

    { return red == other.red && green == other.green && blue == other.blue; }

};

struct Point

{

    Common common;

    int x, y;

    inline void init(int x, int y)

    {

        common.kind = Common::Kind_Point;

        this->x = x;

        this->y = y;

    }

};

struct Size

{

    Common common;

    int width, height;

    inline bool isNull() const

    { return this->width == 0 && this->height == 0; }

    inline void init(int width, int height)

    {

        common.kind = Common::Kind_Size;

        this->width = width;

        this->height = height;

    }

};

struct Rect

{

    Common common;

    int x, y;

    int width, height;

    inline void init(int x, int y, int width, int height)

    {

        common.kind = Common::Kind_Rect;

        this->x = x;

        this->y = y;

        this->width = width;

        this->height = height;

    }

};

struct Font

{

    Common common;

    char *family;

    int pointsize;

    bool bold;

    bool italic;

    bool underline;

    bool strikeout;

    inline void init()

    {

        common.kind = Common::Kind_Font;

        family = 0;

        pointsize = 0;

        bold = false;

        italic = false;

        underline = false;

        strikeout = false;

    }

};

struct SizePolicy

{

    Common common;

    int hsizetype;

    int vsizetype;

    int horstretch;

    int verstretch;

    inline void init()

    {

        common.kind = Common::Kind_SizePolicy;

        hsizetype = 0;

        vsizetype = 0;

        horstretch = 0;

        verstretch = 0;

    }

};

struct Cursor

{

    Common common;

    int shape;

    inline void init(int shape)

    {

        common.kind = Common::Kind_Cursor;

        this->shape = shape;

    }

};

union Variant

{

    Common common;

    Color color;

    Size size;

    Point point;

    Rect rect;

    Font font;

    SizePolicy sizePolicy;

    Cursor cursor;

    inline Variant()

    { common.kind = Common::Kind_Unknown; }

    inline ~Variant()

    {

        if (common.kind == Common::Kind_Font) {

            delete[] font.family;

            font.family = 0;

        }

    }

    inline int kind() const

    { return common.kind; }

    inline Variant &createColor(int r, int g, int b)

    { color.init(r, g, b); return *this; }

    inline Variant &createPoint(int x, int y)

    { point.init(x, y); return *this; }

    inline Variant &createSize(int width, int height)

    { size.init(width, height); return *this; }

    inline Variant &createRect(int x, int y, int w, int h)

    { rect.init(x, y, w, h); return *this; }

    inline Variant &createFont()

    { font.init(); return *this; }

    inline Variant &createSizePolicy()

    { sizePolicy.init(); return *this; }

    inline Variant &createCursor(int shape)

    { cursor.init(shape); return *this; }

};

class DomTool

{

public:

    static QVariant readProperty(const QDomElement& e, const QString& name, const QVariant& defValue);

    static QVariant readProperty(const QDomElement& e, const QString& name, const QVariant& defValue, QString& comment);

    static bool hasProperty(const QDomElement& e, const QString& name);

    static QStringList propertiesOfType(const QDomElement& e, const QString& type);

    static QVariant elementToVariant(const QDomElement& e, const QVariant& defValue);

    static QVariant elementToVariant(const QDomElement& e, const QVariant& defValue, QString &comment);

    static QVariant readAttribute(const QDomElement& e, const QString& name, const QVariant& defValue);

    static QVariant readAttribute(const QDomElement& e, const QString& name, const QVariant& defValue, QString& comment);

    static bool hasAttribute(const QDomElement& e, const QString& name);

    static Color readColor(const QDomElement &e);

    static void fixDocument(QDomDocument&);

    static void fixAttributes(QDomNodeList&, double);

    static void fixAttribute(QDomNode&, double);

};

QT_END_NAMESPACE

Q_DECLARE_METATYPE(Size)

Q_DECLARE_METATYPE(Rect)

Q_DECLARE_METATYPE(Font)

Q_DECLARE_METATYPE(SizePolicy)

Q_DECLARE_METATYPE(Cursor)

Q_DECLARE_METATYPE(Color)

Q_DECLARE_METATYPE(Point)

Q_DECLARE_METATYPE(Common)

Q_DECLARE_METATYPE(Variant)

QT_BEGIN_NAMESPACE

inline Variant asVariant(const QVariant &v)

{

    Variant var;

    var = qVariantValue<Variant>(v);

    return var;

}

QT_END_NAMESPACE

#endif // DOMTOOL_H