/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the QtGui module of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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/****************************************************************************+
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**+
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** Copyright (c) 2007-2008, Apple, Inc.+
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**+
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** All rights reserved.+
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**+
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** Redistribution and use in source and binary forms, with or without+
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** modification, are permitted provided that the following conditions are met:+
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**+
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**   * Redistributions of source code must retain the above copyright notice,+
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**     this list of conditions and the following disclaimer.+
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**   * Redistributions in binary form must reproduce the above copyright notice,+
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**     this list of conditions and the following disclaimer in the documentation+
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**+
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**   * Neither the name of Apple, Inc. nor the names of its contributors+
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**     may be used to endorse or promote products derived from this software+
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**     without specific prior written permission.+
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS+
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT+
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR+
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR+
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** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,+
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** NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS+
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** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.+
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**+
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****************************************************************************/+
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+
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#ifndef QEVENTDISPATCHER_MAC_P_H+
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#define QEVENTDISPATCHER_MAC_P_H+
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+
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//+
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//  W A R N I N G+
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//  -------------+
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//+
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// This file is not part of the Qt API.  It exists purely as an+
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// implementation detail.  This header file may change from version to+
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// version without notice, or even be removed.+
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//+
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// We mean it.+
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//+
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+
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#include <QtGui/qwindowdefs.h>+
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#include <QtCore/qhash.h>+
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#include <QtCore/qstack.h>+
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#include "private/qabstracteventdispatcher_p.h"+
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#include "private/qt_mac_p.h"+
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+
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QT_BEGIN_NAMESPACE+
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+
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#ifdef QT_MAC_USE_COCOA+
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typedef struct _NSModalSession *NSModalSession;+
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typedef struct _QCocoaModalSessionInfo {+
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    QPointer<QWidget> widget;+
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    NSModalSession session;+
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    void *nswindow;+
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} QCocoaModalSessionInfo;+
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#endif+
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+
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class QEventDispatcherMacPrivate;+
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+
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class QEventDispatcherMac : public QAbstractEventDispatcher+
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{+
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    Q_OBJECT+
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    Q_DECLARE_PRIVATE(QEventDispatcherMac)+
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+
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public:+
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    explicit QEventDispatcherMac(QObject *parent = 0);+
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    ~QEventDispatcherMac();+
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+
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    bool processEvents(QEventLoop::ProcessEventsFlags flags);+
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    bool hasPendingEvents();+
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+
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    void registerSocketNotifier(QSocketNotifier *notifier);+
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    void unregisterSocketNotifier(QSocketNotifier *notifier);+
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+
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    void registerTimer(int timerId, int interval, QObject *object);+
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    bool unregisterTimer(int timerId);+
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    bool unregisterTimers(QObject *object);+
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    QList<TimerInfo> registeredTimers(QObject *object) const;+
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+
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    void wakeUp();+
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    void flush();+
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    void interrupt();+
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+
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private:+
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    friend void qt_mac_select_timer_callbk(__EventLoopTimer*, void*);+
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    friend class QApplicationPrivate;+
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};+
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+
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struct MacTimerInfo {+
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    int id;+
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    int interval;+
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    QObject *obj;+
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    bool pending;+
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    CFRunLoopTimerRef runLoopTimer;+
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    bool operator==(const MacTimerInfo &other)+
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    {+
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        return (id == other.id);+
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    }+
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};+
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typedef QHash<int, MacTimerInfo *> MacTimerHash;+
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+
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struct MacSocketInfo {+
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    MacSocketInfo() : socket(0), runloop(0), readNotifier(0), writeNotifier(0) {}+
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    CFSocketRef socket;+
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    CFRunLoopSourceRef runloop;+
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    QObject *readNotifier;+
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    QObject *writeNotifier;+
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};+
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typedef QHash<int, MacSocketInfo *> MacSocketHash;+
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+
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class QEventDispatcherMacPrivate : public QAbstractEventDispatcherPrivate+
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{+
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    Q_DECLARE_PUBLIC(QEventDispatcherMac)+
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+
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public:+
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    QEventDispatcherMacPrivate();+
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+
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    static MacTimerHash macTimerHash;+
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    // Set 'blockSendPostedEvents' to true if you _really_ need+
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    // to make sure that qt events are not posted while calling+
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    // low-level cocoa functions (like beginModalForWindow). And+
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    // use a QBoolBlocker to be safe:+
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    static bool blockSendPostedEvents;+
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#ifdef QT_MAC_USE_COCOA+
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    // The following variables help organizing modal sessions:+
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    static QStack<QCocoaModalSessionInfo> cocoaModalSessionStack;+
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    static bool currentExecIsNSAppRun;+
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    static bool nsAppRunCalledByQt;+
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    static bool cleanupModalSessionsNeeded;+
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    static NSModalSession currentModalSessionCached;+
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    static NSModalSession currentModalSession();+
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    static void updateChildrenWorksWhenModal();+
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    static void temporarilyStopAllModalSessions();+
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    static void beginModalSession(QWidget *widget);+
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    static void endModalSession(QWidget *widget);+
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    static void cancelWaitForMoreEvents();+
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    static void cleanupModalSessions();+
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    static void ensureNSAppInitialized();+
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#endif+
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+
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    MacSocketHash macSockets;+
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    QList<void *> queuedUserInputEvents; // List of EventRef in Carbon, and NSEvent * in Cocoa+
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    CFRunLoopSourceRef postedEventsSource;+
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    CFRunLoopObserverRef waitingObserver;+
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    CFRunLoopObserverRef firstTimeObserver;+
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    QAtomicInt serialNumber;+
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    int lastSerial;+
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    static bool interrupt;+
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private:+
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    static Boolean postedEventSourceEqualCallback(const void *info1, const void *info2);+
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    static void postedEventsSourcePerformCallback(void *info);+
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    static void activateTimer(CFRunLoopTimerRef, void *info);+
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    static void waitingObserverCallback(CFRunLoopObserverRef observer,+
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                                        CFRunLoopActivity activity, void *info);+
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    static void firstLoopEntry(CFRunLoopObserverRef ref, CFRunLoopActivity activity, void *info);+
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};+
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+
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#ifdef QT_MAC_USE_COCOA+
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class QtMacInterruptDispatcherHelp : public QObject+
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{+
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    static QtMacInterruptDispatcherHelp *instance;+
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    bool cancelled;+
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+
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    QtMacInterruptDispatcherHelp();+
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    ~QtMacInterruptDispatcherHelp();+
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+
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    public:+
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    static void interruptLater();+
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    static void cancelInterruptLater();+
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};+
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#endif+
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+
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QT_END_NAMESPACE+
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+
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#endif // QEVENTDISPATCHER_MAC_P_H+
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