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#include "qmacdefines_mac.h"

#include "qapplication.h"

#ifdef QT_MAC_USE_COCOA

#import <private/qcocoamenu_mac_p.h>

#import <private/qcocoamenuloader_mac_p.h>

#include <private/qt_cocoa_helpers_mac_p.h>

#include <private/qapplication_p.h>

#include <private/qaction_p.h>

#include <QtGui/QMenu>

QT_FORWARD_DECLARE_CLASS(QAction)

QT_FORWARD_DECLARE_CLASS(QWidget)

QT_FORWARD_DECLARE_CLASS(QApplication)

QT_FORWARD_DECLARE_CLASS(QCoreApplication)

QT_FORWARD_DECLARE_CLASS(QApplicationPrivate)

QT_FORWARD_DECLARE_CLASS(QKeyEvent)

QT_FORWARD_DECLARE_CLASS(QEvent)

QT_BEGIN_NAMESPACE

extern bool qt_sendSpontaneousEvent(QObject*, QEvent*); //qapplication.cpp

QT_END_NAMESPACE

QT_USE_NAMESPACE

@implementation QT_MANGLE_NAMESPACE(QCocoaMenu)

- (id)initWithQMenu:(QMenu*)menu

{

    self = [super init];

    if (self) {

        qmenu = menu;

        previousAction = 0;

        [self setAutoenablesItems:NO];

        [self setDelegate:self];

    }

    return self;

}

- (void)menu:(NSMenu*)menu willHighlightItem:(NSMenuItem*)item;

{

    Q_UNUSED(menu);

    if (!item) {

        if (previousAction) {

            qt_mac_clear_status_text(previousAction);

            previousAction = 0;

        }

        return;

    }

    if (QAction *action = reinterpret_cast<QAction *>([item tag])) {

        QMenu *qtmenu = static_cast<QT_MANGLE_NAMESPACE(QCocoaMenu) *>(menu)->qmenu;

        previousAction = action;

        action->activate(QAction::Hover);

        qt_mac_menu_emit_hovered(qtmenu, action);

        action->showStatusText(0); // 0 widget -> action's parent

    }

}

- (void)menuWillOpen:(NSMenu*)menu;

{

    while (QWidget *popup

                = QApplication::activePopupWidget())

        popup->close();

    QMenu *qtmenu = static_cast<QT_MANGLE_NAMESPACE(QCocoaMenu) *>(menu)->qmenu;

    qt_mac_emit_menuSignals(qtmenu, true);

    qt_mac_menu_collapseSeparators(menu, qtmenu->separatorsCollapsible());

}

- (void)menuDidClose:(NSMenu*)menu;

{

    qt_mac_emit_menuSignals(((QT_MANGLE_NAMESPACE(QCocoaMenu) *)menu)->qmenu, false);

    if (previousAction) {

        qt_mac_clear_status_text(previousAction);

        previousAction = 0;

    }

}

- (BOOL)hasShortcut:(NSMenu *)menu forKey:(NSString *)key forModifiers:(NSUInteger)modifier

  whichItem:(NSMenuItem**)outItem

{

    for (NSMenuItem *item in [menu itemArray]) {

        if (![item isEnabled] || [item isHidden] || [item isSeparatorItem])

            continue;

        if ([item hasSubmenu]) {

            if ([self hasShortcut:[item submenu]

                           forKey:key

                     forModifiers:modifier whichItem:outItem]) {

                if (outItem)

                    *outItem = item;

                return YES;

            }

        }

        NSString *menuKey = [item keyEquivalent];

        if (menuKey && NSOrderedSame == [menuKey compare:key]

            && (modifier == [item keyEquivalentModifierMask])) {

            if (outItem)

                *outItem = item;

            return YES;

        }

    }

    if (outItem)

        *outItem = 0;

    return NO;

}

- (BOOL)menuHasKeyEquivalent:(NSMenu *)menu forEvent:(NSEvent *)event target:(id *)target action:(SEL *)action

{

    // Check if the menu actually has a keysequence defined for this key event.

    // If it does, then we will first send the key sequence to the QWidget that has focus

    // since (in Qt's eyes) it needs to a chance at the key event first. If the widget

    // accepts the key event, we then return YES, but set the target and action to be nil,

    // which means that the action should not be triggered, and instead dispatch the event ourselves.

    // In every other case we return NO, which means that Cocoa can do as it pleases

    // (i.e., fire the menu action).

    NSMenuItem *whichItem;

    if ([self hasShortcut:menu

                   forKey:[event characters]

             forModifiers:([event modifierFlags] & NSDeviceIndependentModifierFlagsMask)

                 whichItem:&whichItem]) {

        QWidget *widget = 0;

        QAction *qaction = 0;

        if (whichItem && [whichItem tag]) {

            qaction = reinterpret_cast<QAction *>([whichItem tag]);

        }

        if (qApp->activePopupWidget())

            widget = (qApp->activePopupWidget()->focusWidget() ?

                      qApp->activePopupWidget()->focusWidget() : qApp->activePopupWidget());

        else if (QApplicationPrivate::focus_widget)

            widget = QApplicationPrivate::focus_widget;

        if (qaction && widget) {

            int key = qaction->shortcut();

            QKeyEvent accel_ev(QEvent::ShortcutOverride, (key & (~Qt::KeyboardModifierMask)),

                               Qt::KeyboardModifiers(key & Qt::KeyboardModifierMask));

            accel_ev.ignore();

            qt_sendSpontaneousEvent(widget, &accel_ev);

            if (accel_ev.isAccepted()) {

                if (qt_dispatchKeyEvent(event, widget)) {

                    *target = nil;

                    *action = nil;

                    return YES;

                }

            }

        }

    }

    return NO;

}

@end

QT_BEGIN_NAMESPACE

extern int qt_mac_menus_open_count; // qmenu_mac.mm

void qt_mac_emit_menuSignals(QMenu *menu, bool show)

{

    if (!menu)

        return;

    int delta;

    if (show) {

        emit menu->aboutToShow();

        delta = 1;

    } else {

        emit menu->aboutToHide();

        delta = -1;

    }

    qt_mac_menus_open_count += delta;

}

void qt_mac_clear_status_text(QAction *action)

{

    action->d_func()->showStatusText(0, QString());

}

void qt_mac_menu_emit_hovered(QMenu *menu, QAction *action)

{

    emit menu->hovered(action);

}

QT_END_NAMESPACE

#endif