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****************************************************************************/

#ifndef QACTIVEXPLUGINOBJECT_H

#define QACTIVEXPLUGINOBJECT_H

#include <QtCore/QPointer>

#include <QtCore/QMap>

#include <QtGui/QWidget>

#include <QtGui/QPixmap>

QT_BEGIN_NAMESPACE

class QAxWidget;

/* QDesignerAxWidget aggregates QAxWidget to keep it out of the event loop while applying

 * properties directly.

 * Thus, it is possible to set property values in designer that are out of range

 * for the control, which might cause it to throw exceptions.

 *

 * QDesignerAxWidget is the base class following the internal naming

 * conventions that makes the control property visible to the introspection interface.

 *

 * The trick to aggregate a QAxWidget is to overwrite the metaObject() function

 * generated by moc to return the QMetaObject of QAxWidget. This is what QDesignerAxPluginWidget does. */

class QDesignerAxWidget : public QWidget

{

    Q_OBJECT

    Q_PROPERTY(QString control READ control WRITE setControl RESET resetControl DESIGNABLE true)

    Q_DISABLE_COPY(QDesignerAxWidget)

protected:

    explicit QDesignerAxWidget(QWidget *parent);

public:

    virtual ~QDesignerAxWidget();

    bool loadControl(const QString &clsid);

    void resetControl();

    void setControl(const QString &clsid);

    QString control() const;

    QSize sizeHint() const;

    QSize minimumSizeHint() const;

    bool loaded() { return (m_axobject != 0); }

    static QPixmap widgetIcon();

    enum { DrawIndicator = 0x1, DrawFrame = 0x2, DrawControl = 0x4 };

    unsigned drawFlags() const { return m_drawFlags; }

    void setDrawFlags(unsigned f)  { m_drawFlags = f; }

protected:

    void paintEvent(QPaintEvent *event);

    QAxWidget *axobject() const { return m_axobject; }

private:

    const QSize m_defaultSize;

    unsigned m_drawFlags;

    QAxWidget *m_axobject;

    QPixmap m_axImage;

};

class QDesignerAxPluginWidget : public QDesignerAxWidget

{

   // No Q_OBJECT here! - meta functionality is overriden

public:

    explicit QDesignerAxPluginWidget(QWidget *parent);

    virtual ~QDesignerAxPluginWidget();

    virtual const QMetaObject *metaObject() const;

    virtual int qt_metacall(QMetaObject::Call, int, void **);

private:

    QMap<int, bool> m_propValues;

};

#if defined Q_CC_MSVC && _MSC_VER < 1300

template <> inline QDesignerAxWidget *qobject_cast_helper<QDesignerAxWidget*>(QObject *o,  QDesignerAxWidget*)

#else

template <> inline QDesignerAxWidget *qobject_cast<QDesignerAxWidget*>(QObject *o)

#endif

{

    if (!o)

        return 0;

    // Unloaded state

    if (strcmp(o->metaObject()->className(), "QDesignerAxWidget") == 0)

        return static_cast<QDesignerAxPluginWidget*>(o);

    // Loaded state with fake meta object

    if (strcmp(o->metaObject()->className(), "QAxWidget") == 0)

        return static_cast<QDesignerAxPluginWidget*>(o);

    return 0;

}

QT_END_NAMESPACE

#endif // ACTIVEQT_EXTRAINFO_H