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#import <Foundation/Foundation.h>
#import <AppKit/AppKit.h>

#include "qmenu.h"
#include "qmenubar.h"
#include "qmenubar_p.h"
#include "qmacnativewidget_mac.h"

#include <QtCore/QDebug>
#include <QtGui/QGuiApplication>
#include <QtGui/QWindow>
#include <qpa/qplatformnativeinterface.h>

QT_BEGIN_NAMESPACE

#ifndef QT_NO_MENU

namespace {
// TODO use QtMacExtras copy of this function when available.
inline QPlatformNativeInterface::NativeResourceForIntegrationFunction resolvePlatformFunction(const QByteArray &functionName)
{
    QPlatformNativeInterface *nativeInterface = QGuiApplication::platformNativeInterface();
    QPlatformNativeInterface::NativeResourceForIntegrationFunction function =
        nativeInterface->nativeResourceFunctionForIntegration(functionName);
    if (Q_UNLIKELY(!function))
         qWarning("Qt could not resolve function %s from "
                  "QGuiApplication::platformNativeInterface()->nativeResourceFunctionForIntegration()",
                  functionName.constData());
    return function;
}
} //namespsace


/*!
    \since 5.2

    Returns the native NSMenu for this menu. Available on \macos only.

    \note Qt sets the delegate on the native menu. If you need to set your own
    delegate, make sure you save the original one and forward any calls to it.
*/
NSMenu *QMenu::toNSMenu()
{
    Q_D(QMenu);
    // Call into the cocoa platform plugin: qMenuToNSMenu(platformMenu())
    QPlatformNativeInterface::NativeResourceForIntegrationFunction function = resolvePlatformFunction("qmenutonsmenu");
    if (function) {
        typedef void* (*QMenuToNSMenuFunction)(QPlatformMenu *platformMenu);
        return reinterpret_cast<NSMenu *>(reinterpret_cast<QMenuToNSMenuFunction>(function)(d->createPlatformMenu()));
    }
    return nil;
}


/*!
    \since 5.2

    Set this menu to be the dock menu available by option-clicking
    on the application dock icon. Available on \macos only.
*/
void QMenu::setAsDockMenu()
{
    Q_D(QMenu);
    // Call into the cocoa platform plugin: setDockMenu(platformMenu())
    QPlatformNativeInterface::NativeResourceForIntegrationFunction function = resolvePlatformFunction("setdockmenu");
    if (function) {
        typedef void (*SetDockMenuFunction)(QPlatformMenu *platformMenu);
        reinterpret_cast<SetDockMenuFunction>(function)(d->createPlatformMenu());
    }
}


/*! \fn void qt_mac_set_dock_menu(QMenu *menu)
    \relates QMenu
    \deprecated

    Sets this \a menu to be the dock menu available by option-clicking
    on the application dock icon. Available on \macos only.

    Deprecated; use \l QMenu::setAsDockMenu() instead.
*/

void QMenuPrivate::moveWidgetToPlatformItem(QWidget *widget, QPlatformMenuItem* item)
{
    QMacNativeWidget *container = new QMacNativeWidget;
    QObject::connect(platformMenu, SIGNAL(destroyed()), container, SLOT(deleteLater()));
    container->resize(widget->sizeHint());
    widget->setParent(container);
    widget->setVisible(true);

    NSView *containerView = container->nativeView();
    QWindow *containerWindow = container->windowHandle();
    Qt::WindowFlags wf = containerWindow->flags();
    containerWindow->setFlags(wf | Qt::SubWindow);
    [(NSView *)widget->winId() setAutoresizingMask:NSViewWidthSizable];

    item->setNativeContents((WId)containerView);
    container->show();
}

#endif //QT_NO_MENU

#ifndef QT_NO_MENUBAR

/*!
    \since 5.2

    Returns the native NSMenu for this menu bar. Available on \macos only.

    \note Qt may set the delegate on the native menu bar. If you need to set your
    own delegate, make sure you save the original one and forward any calls to it.
*/
NSMenu *QMenuBar::toNSMenu()
{
    // Call into the cocoa platform plugin: qMenuBarToNSMenu(platformMenuBar())
    QPlatformNativeInterface::NativeResourceForIntegrationFunction function = resolvePlatformFunction("qmenubartonsmenu");
    if (function) {
        typedef void* (*QMenuBarToNSMenuFunction)(QPlatformMenuBar *platformMenuBar);
        return reinterpret_cast<NSMenu *>(reinterpret_cast<QMenuBarToNSMenuFunction>(function)(platformMenuBar()));
    }
    return nil;
}
#endif //QT_NO_MENUBAR

QT_END_NAMESPACE