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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QDATETIMEEDIT_P_H
+#define QDATETIMEEDIT_P_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 "QtWidgets/qcombobox.h"
+#include "QtWidgets/qcalendarwidget.h"
+#include "QtWidgets/qspinbox.h"
+#include "QtWidgets/qtoolbutton.h"
+#include "QtWidgets/qmenu.h"
+#include "QtWidgets/qlabel.h"
+#include "QtWidgets/qdatetimeedit.h"
+#include "private/qabstractspinbox_p.h"
+#include "private/qdatetime_p.h"
+
+#include "qdebug.h"
+
+#ifndef QT_NO_DATETIMEEDIT
+
+QT_BEGIN_NAMESPACE
+
+class QCalendarPopup;
+class QDateTimeEditPrivate : public QAbstractSpinBoxPrivate, public QDateTimeParser
+{
+    Q_DECLARE_PUBLIC(QDateTimeEdit)
+public:
+    QDateTimeEditPrivate();
+
+    void init(const QVariant &var);
+    void readLocaleSettings();
+
+    void emitSignals(EmitPolicy ep, const QVariant &old);
+    QString textFromValue(const QVariant &f) const;
+    QVariant valueFromText(const QString &f) const;
+    virtual void _q_editorCursorPositionChanged(int oldpos, int newpos);
+    virtual void interpret(EmitPolicy ep);
+    virtual void clearCache() const;
+
+    QDateTime validateAndInterpret(QString &input, int &, QValidator::State &state,
+                                   bool fixup = false) const;
+    void clearSection(int index);
+    virtual QString displayText() const { return edit->text(); } // this is from QDateTimeParser
+
+    int absoluteIndex(QDateTimeEdit::Section s, int index) const;
+    int absoluteIndex(const SectionNode &s) const;
+    void updateEdit();
+    QDateTime stepBy(int index, int steps, bool test = false) const;
+    int sectionAt(int pos) const;
+    int closestSection(int index, bool forward) const;
+    int nextPrevSection(int index, bool forward) const;
+    void setSelected(int index, bool forward = false);
+
+    void updateCache(const QVariant &val, const QString &str) const;
+
+    void updateTimeSpec();
+    virtual QDateTime getMinimum() const { return minimum.toDateTime(); }
+    virtual QDateTime getMaximum() const { return maximum.toDateTime(); }
+    virtual QLocale locale() const { return q_func()->locale(); }
+    QString valueToText(const QVariant &var) const { return textFromValue(var); }
+    QString getAmPmText(AmPm ap, Case cs) const;
+    int cursorPosition() const { return edit ? edit->cursorPosition() : -1; }
+
+    virtual QStyle::SubControl newHoverControl(const QPoint &pos);
+    virtual void updateEditFieldGeometry();
+    virtual QVariant getZeroVariant() const;
+    virtual void setRange(const QVariant &min, const QVariant &max);
+
+    void _q_resetButton();
+    void updateArrow(QStyle::StateFlag state);
+    bool calendarPopupEnabled() const;
+    void syncCalendarWidget();
+
+    bool isSeparatorKey(const QKeyEvent *k) const;
+
+    static QDateTimeEdit::Sections convertSections(QDateTimeParser::Sections s);
+    static QDateTimeEdit::Section convertToPublic(QDateTimeParser::Section s);
+
+    void initCalendarPopup(QCalendarWidget *cw = 0);
+    void positionCalendarPopup();
+
+    QDateTimeEdit::Sections sections;
+    mutable bool cacheGuard;
+
+    QString defaultDateFormat, defaultTimeFormat, defaultDateTimeFormat, unreversedFormat;
+    mutable QVariant conflictGuard;
+    bool hasHadFocus, formatExplicitlySet, calendarPopup;
+    QStyle::StateFlag arrowState;
+    QCalendarPopup *monthCalendar;
+
+#ifdef QT_KEYPAD_NAVIGATION
+    bool focusOnButton;
+#endif
+};
+
+
+class QCalendarPopup : public QWidget
+{
+    Q_OBJECT
+public:
+    QCalendarPopup(QWidget *parent = 0, QCalendarWidget *cw = 0);
+    QDate selectedDate() { return verifyCalendarInstance()->selectedDate(); }
+    void setDate(const QDate &date);
+    void setDateRange(const QDate &min, const QDate &max);
+    void setFirstDayOfWeek(Qt::DayOfWeek dow) { verifyCalendarInstance()->setFirstDayOfWeek(dow); }
+    QCalendarWidget *calendarWidget() const { return const_cast<QCalendarPopup*>(this)->verifyCalendarInstance(); }
+    void setCalendarWidget(QCalendarWidget *cw);
+Q_SIGNALS:
+    void activated(const QDate &date);
+    void newDateSelected(const QDate &newDate);
+    void hidingCalendar(const QDate &oldDate);
+    void resetButton();
+
+private Q_SLOTS:
+    void dateSelected(const QDate &date);
+    void dateSelectionChanged();
+
+protected:
+    void hideEvent(QHideEvent *);
+    void mousePressEvent(QMouseEvent *e);
+    void mouseReleaseEvent(QMouseEvent *);
+    bool event(QEvent *e);
+
+private:
+    QCalendarWidget *verifyCalendarInstance();
+
+    QWeakPointer<QCalendarWidget> calendar;
+    QDate oldDate;
+    bool dateChanged;
+};
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_DATETIMEEDIT
+
+#endif // QDATETIMEEDIT_P_H