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

**

** All rights reserved.

** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying

** this package.

**

** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

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

#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

{

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