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#ifndef ACTIONPROVIDER_H

#define ACTIONPROVIDER_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include <QtDesigner/extension.h>

#include <QtCore/QPoint>

#include <QtCore/QRect>

#include <QtGui/QApplication>

QT_BEGIN_NAMESPACE

class QAction;

class QDesignerActionProviderExtension

{

public:

    virtual ~QDesignerActionProviderExtension() {}

    virtual QRect actionGeometry(QAction *action) const = 0;

    virtual QAction *actionAt(const QPoint &pos) const = 0;

    virtual void adjustIndicator(const QPoint &pos) = 0;

};

// Find action at the given position for a widget that has actionGeometry() (QToolBar,

// QMenuBar, QMenu). They usually have actionAt(), but that fails since Designer usually sets

// WA_TransparentForMouseEvents on the widgets.

template <class Widget>

    int actionIndexAt(const Widget *w, const QPoint &pos, Qt::Orientation orientation)

{

    const QList<QAction*> actions = w->actions();

    const int actionCount = actions.count();

    if (actionCount == 0)

        return -1;

    // actionGeometry() can be wrong sometimes; it returns a geometry that

    // stretches to the end of the toolbar/menu bar. So, check from the beginning

    // in the case of a horizontal right-to-left orientation.

    const bool checkTopRight = orientation == Qt::Horizontal && w->layoutDirection() == Qt::RightToLeft;

    const QPoint topRight = QPoint(w->rect().width(), 0);

    for (int index = 0; index < actionCount; ++index) {

        QRect g = w->actionGeometry(actions.at(index));

        if (checkTopRight)

            g.setTopRight(topRight);

        else

            g.setTopLeft(QPoint(0, 0));

        if (g.contains(pos))

            return index;

    }

    return -1;

}

Q_DECLARE_EXTENSION_INTERFACE(QDesignerActionProviderExtension, "com.trolltech.Qt.Designer.ActionProvider")

QT_END_NAMESPACE

#endif // ACTIONPROVIDER_H