qdatetimeedit.cpp

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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include <private/qapplication_p.h>
#include <private/qdatetimeedit_p.h>
#include <qabstractspinbox.h>
#include <qapplication.h>
#include <qdatetimeedit.h>
#include <qdebug.h>
#include <qevent.h>
#include <qlineedit.h>
#include <private/qlineedit_p.h>
#include <qlocale.h>
#include <qpainter.h>
#include <qlayout.h>
#include <qset.h>
#include <qstyle.h>
#include <qstylepainter.h>
 
#include <algorithm>
 
//#define QDATETIMEEDIT_QDTEDEBUG
#ifdef QDATETIMEEDIT_QDTEDEBUG
#  define QDTEDEBUG qDebug() << QString::fromLatin1("%1:%2").arg(__FILE__).arg(__LINE__)
#  define QDTEDEBUGN qDebug
#else
#  define QDTEDEBUG if (false) qDebug()
#  define QDTEDEBUGN if (false) qDebug
#endif
 
QT_BEGIN_NAMESPACE
 
using namespace Qt::StringLiterals;
 
// --- QDateTimeEdit ---
 
QDateTimeEdit::QDateTimeEdit(QWidget *parent)
    : QAbstractSpinBox(*new QDateTimeEditPrivate, parent)
{
    Q_D(QDateTimeEdit);
    d->init(QDATETIMEEDIT_DATE_INITIAL.startOfDay());
}
 
QDateTimeEdit::QDateTimeEdit(const QDateTime &datetime, QWidget *parent)
    : QAbstractSpinBox(*new QDateTimeEditPrivate, parent)
{
    Q_D(QDateTimeEdit);
    d->init(datetime.isValid() ? datetime : QDATETIMEEDIT_DATE_INITIAL.startOfDay());
}
 
QDateTimeEdit::QDateTimeEdit(QDate date, QWidget *parent)
    : QAbstractSpinBox(*new QDateTimeEditPrivate, parent)
{
    Q_D(QDateTimeEdit);
    d->init(date.isValid() ? date : QDATETIMEEDIT_DATE_INITIAL);
}
 
QDateTimeEdit::QDateTimeEdit(QTime time, QWidget *parent)
    : QAbstractSpinBox(*new QDateTimeEditPrivate, parent)
{
    Q_D(QDateTimeEdit);
    d->init(time.isValid() ? time : QDATETIMEEDIT_TIME_MIN);
}
 
QDateTimeEdit::QDateTimeEdit(const QVariant &var, QMetaType::Type parserType, QWidget *parent)
    : QAbstractSpinBox(*new QDateTimeEditPrivate(parserType == QMetaType::QDateTime
                                                 ? QTimeZone::LocalTime : QTimeZone::UTC),
                       parent)
{
    Q_D(QDateTimeEdit);
    d->parserType = parserType;
    d->init(var);
}
 
QDateTimeEdit::~QDateTimeEdit()
{
}
 
QDateTime QDateTimeEdit::dateTime() const
{
    Q_D(const QDateTimeEdit);
    return d->value.toDateTime();
}
 
void QDateTimeEdit::setDateTime(const QDateTime &datetime)
{
    Q_D(QDateTimeEdit);
    if (datetime.isValid()) {
        QDateTime when = d->convertTimeZone(datetime);
        Q_ASSERT(when.timeRepresentation() == d->timeZone);
 
        d->clearCache();
        const QDate date = when.date();
        if (!(d->sections & DateSections_Mask))
            setDateRange(date, date);
        d->setValue(when, EmitIfChanged);
    }
}
 
QDate QDateTimeEdit::date() const
{
    Q_D(const QDateTimeEdit);
    return d->value.toDate();
}
 
void QDateTimeEdit::setDate(QDate date)
{
    Q_D(QDateTimeEdit);
    if (date.isValid()) {
        if (!(d->sections & DateSections_Mask))
            setDateRange(date, date);
 
        d->clearCache();
        QDateTime when = d->dateTimeValue(date, d->value.toTime());
        Q_ASSERT(when.isValid());
        d->setValue(when, EmitIfChanged);
        d->updateTimeZone();
    }
}
 
QTime QDateTimeEdit::time() const
{
    Q_D(const QDateTimeEdit);
    return d->value.toTime();
}
 
void QDateTimeEdit::setTime(QTime time)
{
    Q_D(QDateTimeEdit);
    if (time.isValid()) {
        d->clearCache();
        d->setValue(d->dateTimeValue(d->value.toDate(), time), EmitIfChanged);
    }
}
 
 
QCalendar QDateTimeEdit::calendar() const
{
    Q_D(const QDateTimeEdit);
    return d->calendar;
}
 
void QDateTimeEdit::setCalendar(QCalendar calendar)
{
    Q_D(QDateTimeEdit);
    // Set invalid date time to prevent runtime crashes on calendar change
    QDateTime previousValue = d->value.toDateTime();
    setDateTime(QDateTime());
    d->setCalendar(calendar);
    setDateTime(previousValue);
}
 
QDateTime QDateTimeEdit::minimumDateTime() const
{
    Q_D(const QDateTimeEdit);
    return d->minimum.toDateTime();
}
 
void QDateTimeEdit::clearMinimumDateTime()
{
    setMinimumDateTime(QDATETIMEEDIT_COMPAT_DATE_MIN.startOfDay());
}
 
void QDateTimeEdit::setMinimumDateTime(const QDateTime &dt)
{
    Q_D(QDateTimeEdit);
    if (dt.isValid() && dt.date() >= QDATETIMEEDIT_DATE_MIN) {
        const QDateTime m = dt.toTimeZone(d->timeZone);
        const QDateTime max = d->maximum.toDateTime();
        d->setRange(m, (max > m ? max : m));
    }
}
 
QDateTime QDateTimeEdit::maximumDateTime() const
{
    Q_D(const QDateTimeEdit);
    return d->maximum.toDateTime();
}
 
void QDateTimeEdit::clearMaximumDateTime()
{
    setMaximumDateTime(QDATETIMEEDIT_DATE_MAX.endOfDay());
}
 
void QDateTimeEdit::setMaximumDateTime(const QDateTime &dt)
{
    Q_D(QDateTimeEdit);
    if (dt.isValid() && dt.date() <= QDATETIMEEDIT_DATE_MAX) {
        const QDateTime m = dt.toTimeZone(d->timeZone);
        const QDateTime min = d->minimum.toDateTime();
        d->setRange((min < m ? min : m), m);
    }
}
 
void QDateTimeEdit::setDateTimeRange(const QDateTime &min, const QDateTime &max)
{
    Q_D(QDateTimeEdit);
    // FIXME: does none of the range checks applied to setMin/setMax methods !
    const QDateTime minimum = min.toTimeZone(d->timeZone);
    const QDateTime maximum = (min > max ? minimum : max.toTimeZone(d->timeZone));
    d->setRange(minimum, maximum);
}
 
QDate QDateTimeEdit::minimumDate() const
{
    Q_D(const QDateTimeEdit);
    return d->minimum.toDate();
}
 
void QDateTimeEdit::setMinimumDate(QDate min)
{
    Q_D(QDateTimeEdit);
    if (min.isValid() && min >= QDATETIMEEDIT_DATE_MIN)
        setMinimumDateTime(d->dateTimeValue(min, d->minimum.toTime()));
}
 
void QDateTimeEdit::clearMinimumDate()
{
    setMinimumDate(QDATETIMEEDIT_COMPAT_DATE_MIN);
}
 
QDate QDateTimeEdit::maximumDate() const
{
    Q_D(const QDateTimeEdit);
    return d->maximum.toDate();
}
 
void QDateTimeEdit::setMaximumDate(QDate max)
{
    Q_D(QDateTimeEdit);
    if (max.isValid())
        setMaximumDateTime(d->dateTimeValue(max, d->maximum.toTime()));
}
 
void QDateTimeEdit::clearMaximumDate()
{
    setMaximumDate(QDATETIMEEDIT_DATE_MAX);
}
 
QTime QDateTimeEdit::minimumTime() const
{
    Q_D(const QDateTimeEdit);
    return d->minimum.toTime();
}
 
void QDateTimeEdit::setMinimumTime(QTime min)
{
    Q_D(QDateTimeEdit);
    if (min.isValid())
        setMinimumDateTime(d->dateTimeValue(d->minimum.toDate(), min));
}
 
void QDateTimeEdit::clearMinimumTime()
{
    setMinimumTime(QDATETIMEEDIT_TIME_MIN);
}
 
QTime QDateTimeEdit::maximumTime() const
{
    Q_D(const QDateTimeEdit);
    return d->maximum.toTime();
}
 
void QDateTimeEdit::setMaximumTime(QTime max)
{
    Q_D(QDateTimeEdit);
    if (max.isValid())
        setMaximumDateTime(d->dateTimeValue(d->maximum.toDate(), max));
}
 
void QDateTimeEdit::clearMaximumTime()
{
    setMaximumTime(QDATETIMEEDIT_TIME_MAX);
}
 
void QDateTimeEdit::setDateRange(QDate min, QDate max)
{
    Q_D(QDateTimeEdit);
    if (min.isValid() && max.isValid()) {
        setDateTimeRange(d->dateTimeValue(min, d->minimum.toTime()),
                         d->dateTimeValue(max, d->maximum.toTime()));
    }
}
 
void QDateTimeEdit::setTimeRange(QTime min, QTime max)
{
    Q_D(QDateTimeEdit);
    if (min.isValid() && max.isValid()) {
        setDateTimeRange(d->dateTimeValue(d->minimum.toDate(), min),
                         d->dateTimeValue(d->maximum.toDate(), max));
    }
}
 
QDateTimeEdit::Sections QDateTimeEdit::displayedSections() const
{
    Q_D(const QDateTimeEdit);
    return d->sections;
}
 
QDateTimeEdit::Section QDateTimeEdit::currentSection() const
{
    Q_D(const QDateTimeEdit);
#ifdef QT_KEYPAD_NAVIGATION
    if (QApplicationPrivate::keypadNavigationEnabled() && d->focusOnButton)
        return NoSection;
#endif
    return QDateTimeEditPrivate::convertToPublic(d->sectionType(d->currentSectionIndex));
}
 
void QDateTimeEdit::setCurrentSection(Section section)
{
    Q_D(QDateTimeEdit);
    if (section == NoSection || !(section & d->sections))
        return;
 
    d->updateCache(d->value, d->displayText());
    const int size = d->sectionNodes.size();
    int index = d->currentSectionIndex + 1;
    for (int i=0; i<2; ++i) {
        while (index < size) {
            if (QDateTimeEditPrivate::convertToPublic(d->sectionType(index)) == section) {
                d->edit->setCursorPosition(d->sectionPos(index));
                QDTEDEBUG << d->sectionPos(index);
                return;
            }
            ++index;
        }
        index = 0;
    }
}
 
QDateTimeEdit::Section QDateTimeEdit::sectionAt(int index) const
{
    Q_D(const QDateTimeEdit);
    if (index < 0 || index >= d->sectionNodes.size())
        return NoSection;
    return QDateTimeEditPrivate::convertToPublic(d->sectionType(index));
}
 
int QDateTimeEdit::sectionCount() const
{
    Q_D(const QDateTimeEdit);
    return d->sectionNodes.size();
}
 
 
int QDateTimeEdit::currentSectionIndex() const
{
    Q_D(const QDateTimeEdit);
    return d->currentSectionIndex;
}
 
void QDateTimeEdit::setCurrentSectionIndex(int index)
{
    Q_D(QDateTimeEdit);
    if (index < 0 || index >= d->sectionNodes.size())
        return;
    d->edit->setCursorPosition(d->sectionPos(index));
}
 
QCalendarWidget *QDateTimeEdit::calendarWidget() const
{
    Q_D(const QDateTimeEdit);
    if (!d->calendarPopup || !(d->sections & QDateTimeParser::DateSectionMask))
        return nullptr;
    if (!d->monthCalendar) {
        const_cast<QDateTimeEditPrivate*>(d)->initCalendarPopup();
    }
    return d->monthCalendar->calendarWidget();
}
 
void QDateTimeEdit::setCalendarWidget(QCalendarWidget *calendarWidget)
{
    Q_D(QDateTimeEdit);
    if (Q_UNLIKELY(!calendarWidget)) {
        qWarning("QDateTimeEdit::setCalendarWidget: Cannot set a null calendar widget");
        return;
    }
 
    if (Q_UNLIKELY(!d->calendarPopup)) {
        qWarning("QDateTimeEdit::setCalendarWidget: calendarPopup is set to false");
        return;
    }
 
    if (Q_UNLIKELY(!(d->display & QDateTimeParser::DateSectionMask))) {
        qWarning("QDateTimeEdit::setCalendarWidget: no date sections specified");
        return;
    }
    d->initCalendarPopup(calendarWidget);
}
 
 
void QDateTimeEdit::setSelectedSection(Section section)
{
    Q_D(QDateTimeEdit);
    if (section == NoSection) {
        d->edit->setSelection(d->edit->cursorPosition(), 0);
    } else if (section & d->sections) {
        if (currentSection() != section)
            setCurrentSection(section);
        d->setSelected(d->currentSectionIndex);
    }
}
 
 
 
QString QDateTimeEdit::sectionText(Section section) const
{
    Q_D(const QDateTimeEdit);
    if (section == QDateTimeEdit::NoSection || !(section & d->sections)) {
        return QString();
    }
 
    d->updateCache(d->value, d->displayText());
    const int sectionIndex = d->absoluteIndex(section, 0);
    return d->sectionText(sectionIndex);
}
 
QString QDateTimeEdit::displayFormat() const
{
    Q_D(const QDateTimeEdit);
    return isRightToLeft() ? d->unreversedFormat : d->displayFormat;
}
 
void QDateTimeEdit::setDisplayFormat(const QString &format)
{
    Q_D(QDateTimeEdit);
    if (d->parseFormat(format)) {
        d->unreversedFormat.clear();
        if (isRightToLeft()) {
            d->unreversedFormat = format;
            d->displayFormat.clear();
            for (int i=d->sectionNodes.size() - 1; i>=0; --i) {
                d->displayFormat += d->separators.at(i + 1);
                d->displayFormat += d->sectionNode(i).format();
            }
            d->displayFormat += d->separators.at(0);
            std::reverse(d->separators.begin(), d->separators.end());
            std::reverse(d->sectionNodes.begin(), d->sectionNodes.end());
        }
 
        d->formatExplicitlySet = true;
        d->sections = QDateTimeEditPrivate::convertSections(d->display);
        d->clearCache();
 
        d->currentSectionIndex = qMin(d->currentSectionIndex, d->sectionNodes.size() - 1);
        const bool timeShown = (d->sections & TimeSections_Mask);
        const bool dateShown = (d->sections & DateSections_Mask);
        Q_ASSERT(dateShown || timeShown);
        if (timeShown && !dateShown) {
            QTime time = d->value.toTime();
            setDateRange(d->value.toDate(), d->value.toDate());
            if (d->minimum.toTime() >= d->maximum.toTime()) {
                setTimeRange(QDATETIMEEDIT_TIME_MIN, QDATETIMEEDIT_TIME_MAX);
                // if the time range became invalid during the adjustment, the time would have been reset
                setTime(time);
            }
        } else if (dateShown && !timeShown) {
            setTimeRange(QDATETIMEEDIT_TIME_MIN, QDATETIMEEDIT_TIME_MAX);
            d->value = d->value.toDate().startOfDay(d->timeZone);
        }
        d->updateEdit();
        d->_q_editorCursorPositionChanged(-1, 0);
    }
}
 
bool QDateTimeEdit::calendarPopup() const
{
    Q_D(const QDateTimeEdit);
    return d->calendarPopup;
}
 
void QDateTimeEdit::setCalendarPopup(bool enable)
{
    Q_D(QDateTimeEdit);
    if (enable == d->calendarPopup)
        return;
    setAttribute(Qt::WA_MacShowFocusRect, !enable);
    d->calendarPopup = enable;
#ifdef QT_KEYPAD_NAVIGATION
    if (!enable)
        d->focusOnButton = false;
#endif
    d->updateEditFieldGeometry();
    update();
}
 
Qt::TimeSpec QDateTimeEdit::timeSpec() const
{
    Q_D(const QDateTimeEdit);
    return d->timeZone.timeSpec();
}
 
void QDateTimeEdit::setTimeSpec(Qt::TimeSpec spec)
{
    Q_D(QDateTimeEdit);
    if (spec != d->timeZone.timeSpec()) {
        switch (spec) {
        case Qt::UTC:
            d->timeZone = QTimeZone::UTC;
            break;
        case Qt::LocalTime:
            d->timeZone = QTimeZone::LocalTime;
            break;
        default:
            qWarning() << "Ignoring attempt to set time-spec" << spec
                       << "which is not yet supported by QDateTimeEdit";
            // TODO: fix that QTBUG-80417.
            return;
        }
        d->updateTimeZone();
    }
}
 
QSize QDateTimeEdit::sizeHint() const
{
    Q_D(const QDateTimeEdit);
    if (d->cachedSizeHint.isEmpty()) {
        ensurePolished();
 
        const QFontMetrics fm(fontMetrics());
        int h = d->edit->sizeHint().height();
        int w = 0;
        QString s;
        s = d->textFromValue(d->minimum) + u' ';
        w = qMax<int>(w, fm.horizontalAdvance(s));
        s = d->textFromValue(d->maximum) + u' ';
        w = qMax<int>(w, fm.horizontalAdvance(s));
        if (d->specialValueText.size()) {
            s = d->specialValueText;
            w = qMax<int>(w, fm.horizontalAdvance(s));
        }
        w += 2; // cursor blinking space
 
        QSize hint(w, h);
 
#ifdef Q_OS_MAC
        if (d->calendarPopupEnabled()) {
            QStyleOptionComboBox opt;
            d->cachedSizeHint = style()->sizeFromContents(QStyle::CT_ComboBox, &opt, hint, this);
        } else
#endif
        {
            QStyleOptionSpinBox opt;
            initStyleOption(&opt);
            d->cachedSizeHint = style()->sizeFromContents(QStyle::CT_SpinBox, &opt, hint, this);
        }
 
        d->cachedMinimumSizeHint = d->cachedSizeHint;
        // essentially make minimumSizeHint return the same as sizeHint for datetimeedits
    }
    return d->cachedSizeHint;
}
 
 
bool QDateTimeEdit::event(QEvent *event)
{
    Q_D(QDateTimeEdit);
    switch (event->type()) {
    case QEvent::ApplicationLayoutDirectionChange: {
        const bool was = d->formatExplicitlySet;
        const QString oldFormat = d->displayFormat;
        d->displayFormat.clear();
        setDisplayFormat(oldFormat);
        d->formatExplicitlySet = was;
        break; }
    case QEvent::LocaleChange:
        d->updateEdit();
        break;
    case QEvent::StyleChange:
#ifdef Q_OS_MAC
    case QEvent::MacSizeChange:
#endif
        d->setLayoutItemMargins(QStyle::SE_DateTimeEditLayoutItem);
        break;
    default:
        break;
    }
    return QAbstractSpinBox::event(event);
}
 
void QDateTimeEdit::clear()
{
    Q_D(QDateTimeEdit);
    d->clearSection(d->currentSectionIndex);
}
void QDateTimeEdit::keyPressEvent(QKeyEvent *event)
{
    Q_D(QDateTimeEdit);
    int oldCurrent = d->currentSectionIndex;
    bool select = true;
    bool inserted = false;
 
    switch (event->key()) {
#ifdef QT_KEYPAD_NAVIGATION
    case Qt::Key_NumberSign:    //shortcut to popup calendar
        if (QApplicationPrivate::keypadNavigationEnabled() && d->calendarPopupEnabled()) {
            d->initCalendarPopup();
            d->positionCalendarPopup();
            d->monthCalendar->show();
            return;
        }
        break;
    case Qt::Key_Select:
        if (QApplicationPrivate::keypadNavigationEnabled()) {
            if (hasEditFocus()) {
                if (d->focusOnButton) {
                    d->initCalendarPopup();
                    d->positionCalendarPopup();
                    d->monthCalendar->show();
                    d->focusOnButton = false;
                    return;
                }
                setEditFocus(false);
                selectAll();
            } else {
                setEditFocus(true);
 
                //hide cursor
                d->edit->d_func()->setCursorVisible(false);
                d->edit->d_func()->control->setBlinkingCursorEnabled(false);
                d->setSelected(0);
            }
        }
        return;
#endif
    case Qt::Key_Enter:
    case Qt::Key_Return:
        d->interpret(AlwaysEmit);
        d->setSelected(d->currentSectionIndex, true);
        event->ignore();
        emit editingFinished();
        emit d->edit->returnPressed();
        return;
    default:
#ifdef QT_KEYPAD_NAVIGATION
        if (QApplicationPrivate::keypadNavigationEnabled() && !hasEditFocus()
            && !event->text().isEmpty() && event->text().at(0).isLetterOrNumber()) {
            setEditFocus(true);
 
            //hide cursor
            d->edit->d_func()->setCursorVisible(false);
            d->edit->d_func()->control->setBlinkingCursorEnabled(false);
            d->setSelected(0);
            oldCurrent = 0;
        }
#endif
        if (!d->isSeparatorKey(event)) {
            inserted = select = !event->text().isEmpty() && event->text().at(0).isPrint()
                       && !(event->modifiers() & ~(Qt::ShiftModifier|Qt::KeypadModifier));
            break;
        }
        Q_FALLTHROUGH();
    case Qt::Key_Left:
    case Qt::Key_Right:
        if (event->key() == Qt::Key_Left || event->key() == Qt::Key_Right) {
            if (
#ifdef QT_KEYPAD_NAVIGATION
                QApplicationPrivate::keypadNavigationEnabled() && !hasEditFocus()
                || !QApplicationPrivate::keypadNavigationEnabled() &&
#endif
                !(event->modifiers() & Qt::ControlModifier)) {
                select = false;
                break;
            }
        }
        Q_FALLTHROUGH();
    case Qt::Key_Backtab:
    case Qt::Key_Tab: {
        event->accept();
        if (d->specialValue()) {
            d->edit->setSelection(d->edit->cursorPosition(), 0);
            return;
        }
        const bool forward = event->key() != Qt::Key_Left && event->key() != Qt::Key_Backtab
                             && (event->key() != Qt::Key_Tab || !(event->modifiers() & Qt::ShiftModifier));
#ifdef QT_KEYPAD_NAVIGATION
        int newSection = d->nextPrevSection(d->currentSectionIndex, forward);
        if (QApplicationPrivate::keypadNavigationEnabled()) {
            if (d->focusOnButton) {
                newSection = forward ? 0 : d->sectionNodes.size() - 1;
                d->focusOnButton = false;
                update();
            } else if (newSection < 0 && select && d->calendarPopupEnabled()) {
                setSelectedSection(NoSection);
                d->focusOnButton = true;
                update();
                return;
            }
        }
        // only allow date/time sections to be selected.
        if (newSection & ~(QDateTimeParser::TimeSectionMask | QDateTimeParser::DateSectionMask))
            return;
#endif
        //key tab and backtab will be managed thrgout QWidget::event
        if (event->key() != Qt::Key_Backtab && event->key() != Qt::Key_Tab)
            focusNextPrevChild(forward);
 
        return; }
    }
    QAbstractSpinBox::keyPressEvent(event);
    if (select && !d->edit->hasSelectedText()) {
        if (inserted && d->sectionAt(d->edit->cursorPosition()) == QDateTimeParser::NoSectionIndex) {
            QString str = d->displayText();
            int pos = d->edit->cursorPosition();
            if (validate(str, pos) == QValidator::Acceptable
                && (d->sectionNodes.at(oldCurrent).count != 1
                    || d->sectionMaxSize(oldCurrent) == d->sectionSize(oldCurrent)
                    || d->skipToNextSection(oldCurrent, d->value.toDateTime(), d->sectionText(oldCurrent)))) {
                QDTEDEBUG << "Setting currentsection to"
                          << d->closestSection(d->edit->cursorPosition(), true) << event->key()
                          << oldCurrent << str;
                const int tmp = d->closestSection(d->edit->cursorPosition(), true);
                if (tmp >= 0)
                    d->currentSectionIndex = tmp;
            }
        }
        if (d->currentSectionIndex != oldCurrent) {
            d->setSelected(d->currentSectionIndex);
        }
    }
    if (d->specialValue()) {
        d->edit->setSelection(d->edit->cursorPosition(), 0);
    }
}
 
#if QT_CONFIG(wheelevent)
void QDateTimeEdit::wheelEvent(QWheelEvent *event)
{
    QAbstractSpinBox::wheelEvent(event);
}
#endif
 
void QDateTimeEdit::focusInEvent(QFocusEvent *event)
{
    Q_D(QDateTimeEdit);
    QAbstractSpinBox::focusInEvent(event);
    const int oldPos = d->edit->cursorPosition();
    if (!d->formatExplicitlySet) {
        QString *frm = nullptr;
        if (d->displayFormat == d->defaultTimeFormat) {
            frm = &d->defaultTimeFormat;
        } else if (d->displayFormat == d->defaultDateFormat) {
            frm = &d->defaultDateFormat;
        } else if (d->displayFormat == d->defaultDateTimeFormat) {
            frm = &d->defaultDateTimeFormat;
        }
 
        if (frm) {
            d->readLocaleSettings();
            if (d->displayFormat != *frm) {
                setDisplayFormat(*frm);
                d->formatExplicitlySet = false;
                d->edit->setCursorPosition(oldPos);
            }
        }
    }
    const bool oldHasHadFocus = d->hasHadFocus;
    d->hasHadFocus = true;
    bool first = true;
    switch (event->reason()) {
    case Qt::BacktabFocusReason:
        first = false;
        break;
    case Qt::MouseFocusReason:
    case Qt::PopupFocusReason:
        return;
    case Qt::ActiveWindowFocusReason:
        if (oldHasHadFocus)
            return;
    case Qt::ShortcutFocusReason:
    case Qt::TabFocusReason:
    default:
        break;
    }
    if (isRightToLeft())
        first = !first;
    d->updateEdit(); // needed to make it update specialValueText
 
    d->setSelected(first ? 0 : d->sectionNodes.size() - 1);
}
 
bool QDateTimeEdit::focusNextPrevChild(bool next)
{
    Q_D(QDateTimeEdit);
    const int newSection = d->nextPrevSection(d->currentSectionIndex, next);
    switch (d->sectionType(newSection)) {
    case QDateTimeParser::NoSection:
    case QDateTimeParser::FirstSection:
    case QDateTimeParser::LastSection:
        return QAbstractSpinBox::focusNextPrevChild(next);
    default:
        d->edit->deselect();
        d->edit->setCursorPosition(d->sectionPos(newSection));
        QDTEDEBUG << d->sectionPos(newSection);
        d->setSelected(newSection, true);
        return false;
    }
}
 
void QDateTimeEdit::stepBy(int steps)
{
    Q_D(QDateTimeEdit);
#ifdef QT_KEYPAD_NAVIGATION
    // with keypad navigation and not editFocus, left right change the date/time by a fixed amount.
    if (QApplicationPrivate::keypadNavigationEnabled() && !hasEditFocus()) {
        // if date based, shift by day.  else shift by 15min
        if (d->sections & DateSections_Mask) {
            setDateTime(dateTime().addDays(steps));
        } else {
            int minutes = time().hour()*60 + time().minute();
            int blocks = minutes/15;
            blocks += steps;
            /* rounding involved */
            if (minutes % 15) {
                if (steps < 0) {
                    blocks += 1; // do one less step;
                }
            }
 
            minutes = blocks * 15;
 
            /* need to take wrapping into account */
            if (!d->wrapping) {
                int max_minutes = d->maximum.toTime().hour()*60 + d->maximum.toTime().minute();
                int min_minutes = d->minimum.toTime().hour()*60 + d->minimum.toTime().minute();
 
                if (minutes >= max_minutes) {
                    setTime(maximumTime());
                    return;
                } else if (minutes <= min_minutes) {
                    setTime(minimumTime());
                    return;
                }
            }
            setTime(QTime(minutes/60, minutes%60));
        }
        return;
    }
#endif
    // don't optimize away steps == 0. This is the only way to select
    // the currentSection in Qt 4.1.x
    if (d->specialValue() && displayedSections() != AmPmSection) {
        for (int i=0; i<d->sectionNodes.size(); ++i) {
            if (d->sectionType(i) != QDateTimeParser::AmPmSection) {
                d->currentSectionIndex = i;
                break;
            }
        }
    }
    d->setValue(d->stepBy(d->currentSectionIndex, steps, false), EmitIfChanged);
    d->updateCache(d->value, d->displayText());
 
    d->setSelected(d->currentSectionIndex);
    d->updateTimeZone();
}
 
QString QDateTimeEdit::textFromDateTime(const QDateTime &dateTime) const
{
    Q_D(const QDateTimeEdit);
    return locale().toString(dateTime, d->displayFormat, d->calendar);
}
 
 
QDateTime QDateTimeEdit::dateTimeFromText(const QString &text) const
{
    Q_D(const QDateTimeEdit);
    QString copy = text;
    int pos = d->edit->cursorPosition();
    QValidator::State state = QValidator::Acceptable;
    // TODO: if the format specifies time-zone, d->timeZone should change as
    // determined by the parsed text.
    return d->validateAndInterpret(copy, pos, state);
}
 
QValidator::State QDateTimeEdit::validate(QString &text, int &pos) const
{
    Q_D(const QDateTimeEdit);
    QValidator::State state;
    d->validateAndInterpret(text, pos, state);
    return state;
}
 
void QDateTimeEdit::fixup(QString &input) const
{
    Q_D(const QDateTimeEdit);
    QValidator::State state;
    int copy = d->edit->cursorPosition();
 
    QDateTime value = d->validateAndInterpret(input, copy, state, true);
    /*
        String was valid, but the datetime still is not; use the time that
        has the same distance from epoch.
        CorrectToPreviousValue correction is handled by QAbstractSpinBox.
    */
    if (!value.isValid() && d->correctionMode == QAbstractSpinBox::CorrectToNearestValue) {
        value = QDateTime::fromMSecsSinceEpoch(value.toMSecsSinceEpoch(),
                                               value.timeRepresentation());
        input = textFromDateTime(value);
    }
}
 
 
QDateTimeEdit::StepEnabled QDateTimeEdit::stepEnabled() const
{
    Q_D(const QDateTimeEdit);
    if (d->readOnly)
        return {};
    if (d->specialValue()) {
        return (d->minimum == d->maximum ? StepEnabled{} : StepEnabled(StepUpEnabled));
    }
 
    QAbstractSpinBox::StepEnabled ret = { };
 
#ifdef QT_KEYPAD_NAVIGATION
    if (QApplicationPrivate::keypadNavigationEnabled() && !hasEditFocus()) {
        if (d->wrapping)
            return StepEnabled(StepUpEnabled | StepDownEnabled);
        // 3 cases.  date, time, datetime.  each case look
        // at just the relevant component.
        QVariant max, min, val;
        if (!(d->sections & DateSections_Mask)) {
            // time only, no date
            max = d->maximum.toTime();
            min = d->minimum.toTime();
            val = d->value.toTime();
        } else if (!(d->sections & TimeSections_Mask)) {
            // date only, no time
            max = d->maximum.toDate();
            min = d->minimum.toDate();
            val = d->value.toDate();
        } else {
            // both
            max = d->maximum;
            min = d->minimum;
            val = d->value;
        }
        if (val != min)
            ret |= QAbstractSpinBox::StepDownEnabled;
        if (val != max)
            ret |= QAbstractSpinBox::StepUpEnabled;
        return ret;
    }
#endif
    switch (d->sectionType(d->currentSectionIndex)) {
    case QDateTimeParser::NoSection:
    case QDateTimeParser::FirstSection:
    case QDateTimeParser::LastSection: return { };
    default: break;
    }
    if (d->wrapping)
        return StepEnabled(StepDownEnabled|StepUpEnabled);
 
    QVariant v = d->stepBy(d->currentSectionIndex, 1, true);
    if (v != d->value) {
        ret |= QAbstractSpinBox::StepUpEnabled;
    }
    v = d->stepBy(d->currentSectionIndex, -1, true);
    if (v != d->value) {
        ret |= QAbstractSpinBox::StepDownEnabled;
    }
 
    return ret;
}
 
 
void QDateTimeEdit::mousePressEvent(QMouseEvent *event)
{
    Q_D(QDateTimeEdit);
    if (!d->calendarPopupEnabled()) {
        QAbstractSpinBox::mousePressEvent(event);
        return;
    }
    d->updateHoverControl(event->position().toPoint());
    if (d->hoverControl == QStyle::SC_ComboBoxArrow) {
        event->accept();
        if (d->readOnly) {
            return;
        }
        d->updateArrow(QStyle::State_Sunken);
        d->initCalendarPopup();
        d->positionCalendarPopup();
        //Show the calendar
        d->monthCalendar->show();
    } else {
        QAbstractSpinBox::mousePressEvent(event);
    }
}
 
QTimeEdit::QTimeEdit(QWidget *parent)
    : QDateTimeEdit(QDATETIMEEDIT_TIME_MIN, QMetaType::QTime, parent)
{
    connect(this, &QTimeEdit::timeChanged, this, &QTimeEdit::userTimeChanged);
}
 
QTimeEdit::QTimeEdit(QTime time, QWidget *parent)
    : QDateTimeEdit(time.isValid() ? time : QDATETIMEEDIT_TIME_MIN, QMetaType::QTime, parent)
{
    connect(this, &QTimeEdit::timeChanged, this, &QTimeEdit::userTimeChanged);
}
 
QTimeEdit::~QTimeEdit()
{
}
 
QDateEdit::QDateEdit(QWidget *parent)
    : QDateTimeEdit(QDATETIMEEDIT_DATE_INITIAL, QMetaType::QDate, parent)
{
    connect(this, &QDateEdit::dateChanged, this, &QDateEdit::userDateChanged);
}
 
QDateEdit::QDateEdit(QDate date, QWidget *parent)
    : QDateTimeEdit(date.isValid() ? date : QDATETIMEEDIT_DATE_INITIAL, QMetaType::QDate, parent)
{
    connect(this, &QDateEdit::dateChanged, this, &QDateEdit::userDateChanged);
}
 
QDateEdit::~QDateEdit()
{
}
 
// --- QDateTimeEditPrivate ---
 
QDateTimeEditPrivate::QDateTimeEditPrivate(const QTimeZone &zone)
    : QDateTimeParser(QMetaType::QDateTime, QDateTimeParser::DateTimeEdit, QCalendar()),
      timeZone(zone)
{
    fixday = true;
    type = QMetaType::QDateTime;
    currentSectionIndex = FirstSectionIndex;
 
    first.pos = 0;
    minimum = QDATETIMEEDIT_COMPAT_DATE_MIN.startOfDay(timeZone);
    maximum = QDATETIMEEDIT_DATE_MAX.endOfDay(timeZone);
    readLocaleSettings();
}
 
QDateTime QDateTimeEditPrivate::convertTimeZone(const QDateTime &datetime)
{
    return datetime.toTimeZone(timeZone);
}
 
QDateTime QDateTimeEditPrivate::dateTimeValue(QDate date, QTime time) const
{
    QDateTime when = QDateTime(date, time, timeZone);
    if (when.isValid())
        return when;
    // Hit a spring-forward gap
    return QDateTime::fromMSecsSinceEpoch(when.toMSecsSinceEpoch(), timeZone);
}
 
void QDateTimeEditPrivate::updateTimeZone()
{
    minimum = minimum.toDateTime().toTimeZone(timeZone);
    maximum = maximum.toDateTime().toTimeZone(timeZone);
    value = value.toDateTime().toTimeZone(timeZone);
 
    // time zone changes can lead to 00:00:00 becomes 01:00:00 and 23:59:59 becomes 00:59:59 (invalid range)
    const bool dateShown = (sections & QDateTimeEdit::DateSections_Mask);
    if (!dateShown) {
        if (minimum.toTime() >= maximum.toTime()){
            minimum = value.toDate().startOfDay(timeZone);
            maximum = value.toDate().endOfDay(timeZone);
        }
    }
}
 
void QDateTimeEditPrivate::updateEdit()
{
    const QString newText = (specialValue() ? specialValueText : textFromValue(value));
    if (newText == displayText())
        return;
    int selsize = edit->selectedText().size();
    const QSignalBlocker blocker(edit);
 
    edit->setText(newText);
 
    if (!specialValue()
#ifdef QT_KEYPAD_NAVIGATION
        && !(QApplicationPrivate::keypadNavigationEnabled() && !edit->hasEditFocus())
#endif
            ) {
        int cursor = sectionPos(currentSectionIndex);
        QDTEDEBUG << "cursor is " << cursor << currentSectionIndex;
        cursor = qBound(0, cursor, displayText().size());
        QDTEDEBUG << cursor;
        if (selsize > 0) {
            edit->setSelection(cursor, selsize);
            QDTEDEBUG << cursor << selsize;
        } else {
            edit->setCursorPosition(cursor);
            QDTEDEBUG << cursor;
 
        }
    }
}
 
QDateTime QDateTimeEditPrivate::getMinimum() const
{
    if (keyboardTracking)
        return minimum.toDateTime();
 
    if (timeZone.timeSpec() == Qt::LocalTime)
        return QDateTimeParser::getMinimum();
 
    return QDATETIMEEDIT_DATE_MIN.startOfDay(timeZone);
}
 
QDateTime QDateTimeEditPrivate::getMaximum() const
{
    if (keyboardTracking)
        return maximum.toDateTime();
 
    if (timeZone.timeSpec() == Qt::LocalTime)
        return QDateTimeParser::getMaximum();
 
    return QDATETIMEEDIT_DATE_MAX.endOfDay(timeZone);
}
 
void QDateTimeEditPrivate::setSelected(int sectionIndex, bool forward)
{
    if (specialValue()
#ifdef QT_KEYPAD_NAVIGATION
        || (QApplicationPrivate::keypadNavigationEnabled() && !edit->hasEditFocus())
#endif
        ) {
        edit->selectAll();
    } else {
        const SectionNode &node = sectionNode(sectionIndex);
        if (node.type == NoSection || node.type == LastSection || node.type == FirstSection)
            return;
 
        updateCache(value, displayText());
        const int size = sectionSize(sectionIndex);
        if (forward) {
            edit->setSelection(sectionPos(node), size);
        } else {
            edit->setSelection(sectionPos(node) + size, -size);
        }
    }
}
 
int QDateTimeEditPrivate::sectionAt(int pos) const
{
    if (pos < separators.first().size())
        return (pos == 0 ? FirstSectionIndex : NoSectionIndex);
 
    const QString text = displayText();
    const int textSize = text.size();
    if (textSize - pos < separators.last().size() + 1) {
        if (separators.last().size() == 0) {
            return sectionNodes.size() - 1;
        }
        return (pos == textSize ? LastSectionIndex : NoSectionIndex);
    }
    updateCache(value, text);
 
    for (int i=0; i<sectionNodes.size(); ++i) {
        const int tmp = sectionPos(i);
        if (pos < tmp + sectionSize(i)) {
            return (pos < tmp ? -1 : i);
        }
    }
    return -1;
}
 
int QDateTimeEditPrivate::closestSection(int pos, bool forward) const
{
    Q_ASSERT(pos >= 0);
    if (pos < separators.first().size())
        return forward ? 0 : FirstSectionIndex;
 
    const QString text = displayText();
    if (text.size() - pos < separators.last().size() + 1)
        return forward ? LastSectionIndex : int(sectionNodes.size() - 1);
 
    updateCache(value, text);
    for (int i=0; i<sectionNodes.size(); ++i) {
        const int tmp = sectionPos(sectionNodes.at(i));
        if (pos < tmp + sectionSize(i)) {
            if (pos < tmp && !forward) {
                return i-1;
            }
            return i;
        } else if (i == sectionNodes.size() - 1 && pos > tmp) {
            return i;
        }
    }
    qWarning("QDateTimeEdit: Internal Error: closestSection returned NoSection");
    return NoSectionIndex;
}
 
int QDateTimeEditPrivate::nextPrevSection(int current, bool forward) const
{
    Q_Q(const QDateTimeEdit);
    if (q->isRightToLeft())
        forward = !forward;
 
    switch (current) {
    case FirstSectionIndex: return forward ? 0 : FirstSectionIndex;
    case LastSectionIndex: return (forward ? LastSectionIndex : int(sectionNodes.size() - 1));
    case NoSectionIndex: return FirstSectionIndex;
    default: break;
    }
    Q_ASSERT(current >= 0 && current < sectionNodes.size());
 
    current += (forward ? 1 : -1);
    if (current >= sectionNodes.size()) {
        return LastSectionIndex;
    } else if (current < 0) {
        return FirstSectionIndex;
    }
 
    return current;
}
 
void QDateTimeEditPrivate::clearSection(int index)
{
    const auto space = u' ';
    int cursorPos = edit->cursorPosition();
    const QSignalBlocker blocker(edit);
    QString t = edit->text();
    const int pos = sectionPos(index);
    if (Q_UNLIKELY(pos == -1)) {
        qWarning("QDateTimeEdit: Internal error (%s:%d)", __FILE__, __LINE__);
        return;
    }
    const int size = sectionSize(index);
    t.replace(pos, size, QString().fill(space, size));
    edit->setText(t);
    edit->setCursorPosition(cursorPos);
    QDTEDEBUG << cursorPos;
}
 
 
void QDateTimeEditPrivate::updateCache(const QVariant &val, const QString &str) const
{
    if (val != cachedValue || str != cachedText || cacheGuard) {
        cacheGuard = true;
        QString copy = str;
        int unused = edit->cursorPosition();
        QValidator::State unusedState;
        validateAndInterpret(copy, unused, unusedState);
        cacheGuard = false;
    }
}
 
QDateTime QDateTimeEditPrivate::validateAndInterpret(QString &input, int &position,
                                                     QValidator::State &state, bool fixup) const
{
    if (input.isEmpty()) {
        if (sectionNodes.size() == 1 || !specialValueText.isEmpty()) {
            state = QValidator::Intermediate;
        } else {
            state = QValidator::Invalid;
        }
        return getZeroVariant().toDateTime();
    } else if (cachedText == input && !fixup) {
        state = cachedState;
        return cachedValue.toDateTime();
    } else if (!specialValueText.isEmpty()) {
        bool changeCase = false;
        const int max = qMin(specialValueText.size(), input.size());
        int i;
        for (i=0; i<max; ++i) {
            const QChar ic = input.at(i);
            const QChar sc = specialValueText.at(i);
            if (ic != sc) {
                if (sc.toLower() == ic.toLower()) {
                    changeCase = true;
                } else {
                    break;
                }
            }
        }
        if (i == max) {
            state = specialValueText.size() == input.size() ? QValidator::Acceptable : QValidator::Intermediate;
            if (changeCase) {
                input = specialValueText.left(max);
            }
            return minimum.toDateTime();
        }
    }
 
    StateNode tmp = parse(input, position, value.toDateTime(), fixup);
    // Take note of any corrections imposed during parsing:
    input = m_text;
    // Impose this widget's time system:
    tmp.value = tmp.value.toTimeZone(timeZone);
    // ... but that might turn a valid datetime into an invalid one:
    if (!tmp.value.isValid() && tmp.state == Acceptable)
        tmp.state = Intermediate;
 
    position += tmp.padded;
    state = QValidator::State(int(tmp.state));
    if (state == QValidator::Acceptable) {
        if (tmp.conflicts && conflictGuard != tmp.value) {
            conflictGuard = tmp.value;
            clearCache();
            input = textFromValue(tmp.value);
            updateCache(tmp.value, input);
            conflictGuard.clear();
        } else {
            cachedText = input;
            cachedState = state;
            cachedValue = tmp.value;
        }
    } else {
        clearCache();
    }
    return (tmp.value.isNull() ? getZeroVariant().toDateTime() : tmp.value);
}
 
 
QString QDateTimeEditPrivate::textFromValue(const QVariant &f) const
{
    Q_Q(const QDateTimeEdit);
    return q->textFromDateTime(f.toDateTime());
}
 
QVariant QDateTimeEditPrivate::valueFromText(const QString &f) const
{
    Q_Q(const QDateTimeEdit);
    return q->dateTimeFromText(f).toTimeZone(timeZone);
}
 
 
QDateTime QDateTimeEditPrivate::stepBy(int sectionIndex, int steps, bool test) const
{
    Q_Q(const QDateTimeEdit);
    QDateTime v = value.toDateTime();
    QString str = displayText();
    int pos = edit->cursorPosition();
    const SectionNode sn = sectionNode(sectionIndex);
 
    // to make sure it behaves reasonably when typing something and then stepping in non-tracking mode
    if (!test && pendingEmit && q->validate(str, pos) == QValidator::Acceptable)
        v = q->dateTimeFromText(str);
    int val = getDigit(v, sectionIndex);
 
    const int min = absoluteMin(sectionIndex);
    const int max = absoluteMax(sectionIndex, value.toDateTime());
 
    if (sn.type & DayOfWeekSectionMask) {
        // Must take locale's first day of week into account when *not*
        // wrapping; min and max don't help us.
#ifndef QT_ALWAYS_WRAP_WEEKDAY // (documentation, not an actual define)
        if (!wrapping) {
            /* It's not clear this is ever really a desirable behavior.
 
               It refuses to step backwards from the first day of the week or
               forwards from the day before, only allowing day-of-week stepping
               from start to end of one week. That's strictly what non-wrapping
               behavior must surely mean, when put in locale-neutral terms.
 
               It is, however, likely that users would prefer the "more natural"
               behavior of cycling through the week.
            */
            const int first = int(locale().firstDayOfWeek()); // Mon = 1 through 7 = Sun
            val = qBound(val < first ? first - 7 : first,
                         val + steps,
                         val < first ? first - 1 : first + 6);
        } else
#endif
        {
            val += steps;
        }
 
        // Restore to range from 1 through 7:
        val = val % 7;
        if (val <= 0)
            val += 7;
    } else {
        val += steps;
        const int span = max - min + 1;
        if (val < min)
            val = wrapping ? val + span : min;
        else if (val > max)
            val = wrapping ? val - span : max;
    }
 
    const int oldDay = v.date().day(calendar);
 
    /*
        Stepping into a daylight saving time that doesn't exist (setDigit() is
        true when date and time are valid, even if the date-time returned
        isn't), so use the time that has the same distance from epoch.
    */
    if (setDigit(v, sectionIndex, val) && !v.isValid()) {
        auto msecsSinceEpoch = v.toMSecsSinceEpoch();
        // decreasing from e.g 3am to 2am would get us back to 3am, but we want 1am
        if (steps < 0 && sn.type & HourSectionMask)
            msecsSinceEpoch -= 3600 * 1000;
        v = QDateTime::fromMSecsSinceEpoch(msecsSinceEpoch, v.timeRepresentation());
    }
    // if this sets year or month it will make
    // sure that days are lowered if needed.
 
    const QDateTime minimumDateTime = minimum.toDateTime();
    const QDateTime maximumDateTime = maximum.toDateTime();
    // changing one section should only modify that section, if possible
    if (sn.type != AmPmSection && !(sn.type & DayOfWeekSectionMask)
        && (v < minimumDateTime || v > maximumDateTime)) {
        const int localmin = getDigit(minimumDateTime, sectionIndex);
        const int localmax = getDigit(maximumDateTime, sectionIndex);
 
        if (wrapping) {
            // just because we hit the roof in one direction, it
            // doesn't mean that we hit the floor in the other
            if (steps > 0) {
                setDigit(v, sectionIndex, min);
                if (!(sn.type & DaySectionMask) && sections & DateSectionMask) {
                    const int daysInMonth = v.date().daysInMonth(calendar);
                    if (v.date().day(calendar) < oldDay && v.date().day(calendar) < daysInMonth) {
                        const int adds = qMin(oldDay, daysInMonth);
                        v = v.addDays(adds - v.date().day(calendar));
                    }
                }
 
                if (v < minimumDateTime) {
                    setDigit(v, sectionIndex, localmin);
                    if (v < minimumDateTime)
                        setDigit(v, sectionIndex, localmin + 1);
                }
            } else {
                setDigit(v, sectionIndex, max);
                if (!(sn.type & DaySectionMask) && sections & DateSectionMask) {
                    const int daysInMonth = v.date().daysInMonth(calendar);
                    if (v.date().day(calendar) < oldDay && v.date().day(calendar) < daysInMonth) {
                        const int adds = qMin(oldDay, daysInMonth);
                        v = v.addDays(adds - v.date().day(calendar));
                    }
                }
 
                if (v > maximumDateTime) {
                    setDigit(v, sectionIndex, localmax);
                    if (v > maximumDateTime)
                        setDigit(v, sectionIndex, localmax - 1);
                }
            }
        } else {
            setDigit(v, sectionIndex, (steps > 0 ? localmax : localmin));
        }
    }
    if (!test && oldDay != v.date().day(calendar) && !(sn.type & DaySectionMask)) {
        // this should not happen when called from stepEnabled
        cachedDay = qMax<int>(oldDay, cachedDay);
    }
 
    if (v < minimumDateTime) {
        if (wrapping) {
            QDateTime t = v;
            setDigit(t, sectionIndex, steps < 0 ? max : min);
            bool mincmp = (t >= minimumDateTime);
            bool maxcmp = (t <= maximumDateTime);
            if (!mincmp || !maxcmp) {
                setDigit(t, sectionIndex, getDigit(steps < 0
                                                   ? maximumDateTime
                                                   : minimumDateTime, sectionIndex));
                mincmp = (t >= minimumDateTime);
                maxcmp = (t <= maximumDateTime);
            }
            if (mincmp && maxcmp) {
                v = t;
            }
        } else {
            v = value.toDateTime();
        }
    } else if (v > maximumDateTime) {
        if (wrapping) {
            QDateTime t = v;
            setDigit(t, sectionIndex, steps > 0 ? min : max);
            bool mincmp = (t >= minimumDateTime);
            bool maxcmp = (t <= maximumDateTime);
            if (!mincmp || !maxcmp) {
                setDigit(t, sectionIndex, getDigit(steps > 0 ?
                                                   minimumDateTime :
                                                   maximumDateTime, sectionIndex));
                mincmp = (t >= minimumDateTime);
                maxcmp = (t <= maximumDateTime);
            }
            if (mincmp && maxcmp) {
                v = t;
            }
        } else {
            v = value.toDateTime();
        }
    }
 
    return bound(v, value, steps).toDateTime().toTimeZone(timeZone);
}
 
void QDateTimeEditPrivate::emitSignals(EmitPolicy ep, const QVariant &old)
{
    Q_Q(QDateTimeEdit);
    if (ep == NeverEmit) {
        return;
    }
    pendingEmit = false;
 
    const bool dodate = value.toDate().isValid() && (sections & DateSectionMask);
    const bool datechanged = (ep == AlwaysEmit || old.toDate() != value.toDate());
    const bool dotime = value.toTime().isValid() && (sections & TimeSectionMask);
    const bool timechanged = (ep == AlwaysEmit || old.toTime() != value.toTime());
 
    updateCache(value, displayText());
 
    syncCalendarWidget();
    if (datechanged || timechanged)
        emit q->dateTimeChanged(value.toDateTime());
    if (dodate && datechanged)
        emit q->dateChanged(value.toDate());
    if (dotime && timechanged)
        emit q->timeChanged(value.toTime());
 
}
 
void QDateTimeEditPrivate::_q_editorCursorPositionChanged(int oldpos, int newpos)
{
    if (ignoreCursorPositionChanged || specialValue())
        return;
    const QString oldText = displayText();
    updateCache(value, oldText);
 
    const bool allowChange = !edit->hasSelectedText();
    const bool forward = oldpos <= newpos;
    ignoreCursorPositionChanged = true;
    int s = sectionAt(newpos);
    if (s == NoSectionIndex && forward && newpos > 0) {
        s = sectionAt(newpos - 1);
    }
 
    int c = newpos;
 
    const int selstart = edit->selectionStart();
    const int selSection = sectionAt(selstart);
    const int l = selSection != -1 ? sectionSize(selSection) : 0;
 
    if (s == NoSectionIndex) {
        if (l > 0 && selstart == sectionPos(selSection) && edit->selectedText().size() == l) {
            s = selSection;
            if (allowChange)
                setSelected(selSection, true);
            c = -1;
        } else {
            int closest = closestSection(newpos, forward);
            c = sectionPos(closest) + (forward ? 0 : qMax<int>(0, sectionSize(closest)));
 
            if (allowChange) {
                edit->setCursorPosition(c);
                QDTEDEBUG << c;
            }
            s = closest;
        }
    }
 
    if (allowChange && currentSectionIndex != s) {
        interpret(EmitIfChanged);
    }
    if (c == -1) {
        setSelected(s, true);
    } else if (!edit->hasSelectedText()) {
        if (oldpos < newpos) {
            edit->setCursorPosition(displayText().size() - (oldText.size() - c));
        } else {
            edit->setCursorPosition(c);
        }
    }
 
    QDTEDEBUG << "currentSectionIndex is set to" << sectionNode(s).name()
              << oldpos << newpos
              << "was" << sectionNode(currentSectionIndex).name();
 
    currentSectionIndex = s;
    Q_ASSERT_X(currentSectionIndex < sectionNodes.size(),
               "QDateTimeEditPrivate::_q_editorCursorPositionChanged()",
               qPrintable(QString::fromLatin1("Internal error (%1 %2)").
                          arg(currentSectionIndex).
                          arg(sectionNodes.size())));
 
    ignoreCursorPositionChanged = false;
}
 
void QDateTimeEditPrivate::readLocaleSettings()
{
    const QLocale loc;
    defaultTimeFormat = loc.timeFormat(QLocale::ShortFormat);
    defaultDateFormat = loc.dateFormat(QLocale::ShortFormat);
    defaultDateTimeFormat = loc.dateTimeFormat(QLocale::ShortFormat);
}
 
QDateTimeEdit::Section QDateTimeEditPrivate::convertToPublic(QDateTimeParser::Section s)
{
    switch (s & ~Internal) {
    case AmPmSection: return QDateTimeEdit::AmPmSection;
    case MSecSection: return QDateTimeEdit::MSecSection;
    case SecondSection: return QDateTimeEdit::SecondSection;
    case MinuteSection: return QDateTimeEdit::MinuteSection;
    case DayOfWeekSectionShort:
    case DayOfWeekSectionLong:
    case DaySection: return QDateTimeEdit::DaySection;
    case MonthSection: return QDateTimeEdit::MonthSection;
    case YearSection2Digits:
    case YearSection: return QDateTimeEdit::YearSection;
    case Hour12Section:
    case Hour24Section: return QDateTimeEdit::HourSection;
    case FirstSection:
    case NoSection:
    case LastSection: break;
    }
    return QDateTimeEdit::NoSection;
}
 
QDateTimeEdit::Sections QDateTimeEditPrivate::convertSections(QDateTimeParser::Sections s)
{
    QDateTimeEdit::Sections ret;
    if (s & QDateTimeParser::MSecSection)
        ret |= QDateTimeEdit::MSecSection;
    if (s & QDateTimeParser::SecondSection)
        ret |= QDateTimeEdit::SecondSection;
    if (s & QDateTimeParser::MinuteSection)
        ret |= QDateTimeEdit::MinuteSection;
    if (s & (QDateTimeParser::HourSectionMask))
        ret |= QDateTimeEdit::HourSection;
    if (s & QDateTimeParser::AmPmSection)
        ret |= QDateTimeEdit::AmPmSection;
    if (s & (QDateTimeParser::DaySectionMask))
        ret |= QDateTimeEdit::DaySection;
    if (s & QDateTimeParser::MonthSection)
        ret |= QDateTimeEdit::MonthSection;
    if (s & (QDateTimeParser::YearSectionMask))
        ret |= QDateTimeEdit::YearSection;
 
    return ret;
}
 
void QDateTimeEdit::paintEvent(QPaintEvent *event)
{
    Q_D(QDateTimeEdit);
    if (!d->calendarPopupEnabled()) {
        QAbstractSpinBox::paintEvent(event);
        return;
    }
 
    QStyleOptionSpinBox opt;
    initStyleOption(&opt);
 
    QStyleOptionComboBox optCombo;
 
    optCombo.initFrom(this);
    optCombo.editable = true;
    optCombo.frame = opt.frame;
    optCombo.subControls = opt.subControls;
    optCombo.activeSubControls = opt.activeSubControls;
    optCombo.state = opt.state;
    if (d->readOnly) {
        optCombo.state &= ~QStyle::State_Enabled;
    }
 
    QStylePainter p(this);
    p.drawComplexControl(QStyle::CC_ComboBox, optCombo);
}
 
int QDateTimeEditPrivate::absoluteIndex(QDateTimeEdit::Section s, int index) const
{
    for (int i=0; i<sectionNodes.size(); ++i) {
        if (convertToPublic(sectionNodes.at(i).type) == s && index-- == 0) {
            return i;
        }
    }
    return NoSectionIndex;
}
 
int QDateTimeEditPrivate::absoluteIndex(const SectionNode &s) const
{
    return sectionNodes.indexOf(s);
}
 
void QDateTimeEditPrivate::interpret(EmitPolicy ep)
{
    Q_Q(QDateTimeEdit);
    QString tmp = displayText();
    int pos = edit->cursorPosition();
    const QValidator::State state = q->validate(tmp, pos);
    if (state != QValidator::Acceptable
        && correctionMode == QAbstractSpinBox::CorrectToPreviousValue
        && (state == QValidator::Invalid
            || currentSectionIndex < 0
            || !(fieldInfo(currentSectionIndex) & AllowPartial))) {
        setValue(value, ep);
        updateTimeZone();
    } else {
        QAbstractSpinBoxPrivate::interpret(ep);
    }
}
 
void QDateTimeEditPrivate::clearCache() const
{
    QAbstractSpinBoxPrivate::clearCache();
    cachedDay = -1;
}
 
void QDateTimeEdit::initStyleOption(QStyleOptionSpinBox *option) const
{
    if (!option)
        return;
 
    Q_D(const QDateTimeEdit);
    QAbstractSpinBox::initStyleOption(option);
    if (d->calendarPopupEnabled()) {
        option->subControls = QStyle::SC_ComboBoxFrame | QStyle::SC_ComboBoxEditField
                              | QStyle::SC_ComboBoxArrow;
        if (d->arrowState == QStyle::State_Sunken)
            option->state |= QStyle::State_Sunken;
        else
            option->state &= ~QStyle::State_Sunken;
    }
}
 
void QDateTimeEditPrivate::init(const QVariant &var)
{
    Q_Q(QDateTimeEdit);
    switch (var.userType()) {
    case QMetaType::QDate:
        value = var.toDate().startOfDay(timeZone);
        updateTimeZone();
        q->setDisplayFormat(defaultDateFormat);
        if (sectionNodes.isEmpty()) // ### safeguard for broken locale
            q->setDisplayFormat("dd/MM/yyyy"_L1);
        break;
    case QMetaType::QDateTime:
        value = var;
        updateTimeZone();
        q->setDisplayFormat(defaultDateTimeFormat);
        if (sectionNodes.isEmpty()) // ### safeguard for broken locale
            q->setDisplayFormat("dd/MM/yyyy hh:mm:ss"_L1);
        break;
    case QMetaType::QTime:
        value = dateTimeValue(QDATETIMEEDIT_DATE_INITIAL, var.toTime());
        updateTimeZone();
        q->setDisplayFormat(defaultTimeFormat);
        if (sectionNodes.isEmpty()) // ### safeguard for broken locale
            q->setDisplayFormat("hh:mm:ss"_L1);
        break;
    default:
        Q_ASSERT_X(0, "QDateTimeEditPrivate::init", "Internal error");
        break;
    }
#ifdef QT_KEYPAD_NAVIGATION
    if (QApplicationPrivate::keypadNavigationEnabled())
        q->setCalendarPopup(true);
#endif
    q->setInputMethodHints(Qt::ImhPreferNumbers);
    setLayoutItemMargins(QStyle::SE_DateTimeEditLayoutItem);
}
 
void QDateTimeEditPrivate::_q_resetButton()
{
    updateArrow(QStyle::State_None);
}
 
void QDateTimeEditPrivate::updateArrow(QStyle::StateFlag state)
{
    Q_Q(QDateTimeEdit);
 
    if (arrowState == state)
        return;
    arrowState = state;
    if (arrowState != QStyle::State_None)
        buttonState |= Mouse;
    else {
        buttonState = 0;
        hoverControl = QStyle::SC_ComboBoxFrame;
    }
    q->update();
}
 
QStyle::SubControl QDateTimeEditPrivate::newHoverControl(const QPoint &pos)
{
    if (!calendarPopupEnabled())
        return QAbstractSpinBoxPrivate::newHoverControl(pos);
 
    Q_Q(QDateTimeEdit);
 
    QStyleOptionComboBox optCombo;
    optCombo.initFrom(q);
    optCombo.editable = true;
    optCombo.subControls = QStyle::SC_All;
    hoverControl = q->style()->hitTestComplexControl(QStyle::CC_ComboBox, &optCombo, pos, q);
    return hoverControl;
}
 
void QDateTimeEditPrivate::updateEditFieldGeometry()
{
    if (!calendarPopupEnabled()) {
        QAbstractSpinBoxPrivate::updateEditFieldGeometry();
        return;
    }
 
    Q_Q(QDateTimeEdit);
 
    QStyleOptionComboBox optCombo;
    optCombo.initFrom(q);
    optCombo.editable = true;
    optCombo.subControls = QStyle::SC_ComboBoxEditField;
    edit->setGeometry(q->style()->subControlRect(QStyle::CC_ComboBox, &optCombo,
                                                 QStyle::SC_ComboBoxEditField, q));
}
 
QVariant QDateTimeEditPrivate::getZeroVariant() const
{
    Q_ASSERT(type == QMetaType::QDateTime);
    return QDATETIMEEDIT_DATE_INITIAL.startOfDay(timeZone);
}
 
void QDateTimeEditPrivate::setRange(const QVariant &min, const QVariant &max)
{
    QAbstractSpinBoxPrivate::setRange(min, max);
    syncCalendarWidget();
}
 
 
bool QDateTimeEditPrivate::isSeparatorKey(const QKeyEvent *ke) const
{
    if (!ke->text().isEmpty() && currentSectionIndex + 1 < sectionNodes.size() && currentSectionIndex >= 0) {
        if (fieldInfo(currentSectionIndex) & Numeric) {
            if (ke->text().at(0).isNumber())
                return false;
        } else if (ke->text().at(0).isLetterOrNumber()) {
            return false;
        }
        return separators.at(currentSectionIndex + 1).contains(ke->text());
    }
    return false;
}
 
void QDateTimeEditPrivate::initCalendarPopup(QCalendarWidget *cw)
{
    Q_Q(QDateTimeEdit);
    if (!monthCalendar) {
        monthCalendar = new QCalendarPopup(q, cw, calendar);
        monthCalendar->setObjectName("qt_datetimedit_calendar"_L1);
        QObject::connect(monthCalendar, SIGNAL(newDateSelected(QDate)), q, SLOT(setDate(QDate)));
        QObject::connect(monthCalendar, SIGNAL(hidingCalendar(QDate)), q, SLOT(setDate(QDate)));
        QObject::connect(monthCalendar, SIGNAL(activated(QDate)), q, SLOT(setDate(QDate)));
        QObject::connect(monthCalendar, SIGNAL(activated(QDate)), monthCalendar, SLOT(close()));
        QObject::connect(monthCalendar, SIGNAL(resetButton()), q, SLOT(_q_resetButton()));
    } else if (cw) {
        monthCalendar->setCalendarWidget(cw);
    }
    syncCalendarWidget();
}
 
void QDateTimeEditPrivate::positionCalendarPopup()
{
    Q_Q(QDateTimeEdit);
    QPoint pos = (q->layoutDirection() == Qt::RightToLeft) ? q->rect().bottomRight() : q->rect().bottomLeft();
    QPoint pos2 = (q->layoutDirection() == Qt::RightToLeft) ? q->rect().topRight() : q->rect().topLeft();
    pos = q->mapToGlobal(pos);
    pos2 = q->mapToGlobal(pos2);
    QSize size = monthCalendar->sizeHint();
    QScreen *screen = QGuiApplication::screenAt(pos);
    if (!screen)
        screen = QGuiApplication::primaryScreen();
    const QRect screenRect = screen->availableGeometry();
    //handle popup falling "off screen"
    if (q->layoutDirection() == Qt::RightToLeft) {
        pos.setX(pos.x()-size.width());
        pos2.setX(pos2.x()-size.width());
        if (pos.x() < screenRect.left())
            pos.setX(qMax(pos.x(), screenRect.left()));
        else if (pos.x()+size.width() > screenRect.right())
            pos.setX(qMax(pos.x()-size.width(), screenRect.right()-size.width()));
    } else {
        if (pos.x()+size.width() > screenRect.right())
            pos.setX(screenRect.right()-size.width());
        pos.setX(qMax(pos.x(), screenRect.left()));
    }
    if (pos.y() + size.height() > screenRect.bottom())
        pos.setY(pos2.y() - size.height());
    else if (pos.y() < screenRect.top())
        pos.setY(screenRect.top());
    if (pos.y() < screenRect.top())
        pos.setY(screenRect.top());
    if (pos.y()+size.height() > screenRect.bottom())
        pos.setY(screenRect.bottom()-size.height());
    monthCalendar->move(pos);
}
 
bool QDateTimeEditPrivate::calendarPopupEnabled() const
{
    return (calendarPopup && (sections & (DateSectionMask)));
}
 
void QDateTimeEditPrivate::syncCalendarWidget()
{
    Q_Q(QDateTimeEdit);
    if (monthCalendar) {
        const QSignalBlocker blocker(monthCalendar);
        monthCalendar->setDateRange(q->minimumDate(), q->maximumDate());
        monthCalendar->setDate(q->date());
    }
}
 
QCalendarPopup::QCalendarPopup(QWidget *parent, QCalendarWidget *cw, QCalendar ca)
    : QWidget(parent, Qt::Popup), calendarSystem(ca)
{
    setAttribute(Qt::WA_WindowPropagation);
 
    dateChanged = false;
    if (!cw) {
        verifyCalendarInstance();
    } else {
        setCalendarWidget(cw);
    }
}
 
QCalendarWidget *QCalendarPopup::verifyCalendarInstance()
{
    if (calendar.isNull()) {
        QCalendarWidget *cw = new QCalendarWidget(this);
        cw->setCalendar(calendarSystem);
        cw->setVerticalHeaderFormat(QCalendarWidget::NoVerticalHeader);
#ifdef QT_KEYPAD_NAVIGATION
        if (QApplicationPrivate::keypadNavigationEnabled())
            cw->setHorizontalHeaderFormat(QCalendarWidget::SingleLetterDayNames);
#endif
        setCalendarWidget(cw);
        return cw;
    } else {
        return calendar.data();
    }
}
 
void QCalendarPopup::setCalendarWidget(QCalendarWidget *cw)
{
    Q_ASSERT(cw);
    QVBoxLayout *widgetLayout = qobject_cast<QVBoxLayout*>(layout());
    if (!widgetLayout) {
        widgetLayout = new QVBoxLayout(this);
        widgetLayout->setContentsMargins(QMargins());
        widgetLayout->setSpacing(0);
    }
    delete calendar.data();
    calendar = QPointer<QCalendarWidget>(cw);
    widgetLayout->addWidget(cw);
 
    connect(cw, SIGNAL(activated(QDate)), this, SLOT(dateSelected(QDate)));
    connect(cw, SIGNAL(clicked(QDate)), this, SLOT(dateSelected(QDate)));
    connect(cw, SIGNAL(selectionChanged()), this, SLOT(dateSelectionChanged()));
 
    cw->setFocus();
}
 
 
void QCalendarPopup::setDate(QDate date)
{
    oldDate = date;
    verifyCalendarInstance()->setSelectedDate(date);
}
 
void QCalendarPopup::setDateRange(QDate min, QDate max)
{
    QCalendarWidget *cw = verifyCalendarInstance();
    cw->setMinimumDate(min);
    cw->setMaximumDate(max);
}
 
void QCalendarPopup::mousePressEvent(QMouseEvent *event)
{
    QDateTimeEdit *dateTime = qobject_cast<QDateTimeEdit *>(parentWidget());
    if (dateTime) {
        QStyleOptionComboBox opt;
        opt.initFrom(dateTime);
        QRect arrowRect = dateTime->style()->subControlRect(QStyle::CC_ComboBox, &opt,
                                                            QStyle::SC_ComboBoxArrow, dateTime);
        arrowRect.moveTo(dateTime->mapToGlobal(arrowRect .topLeft()));
        if (arrowRect.contains(event->globalPosition().toPoint()) || rect().contains(event->position().toPoint()))
            setAttribute(Qt::WA_NoMouseReplay);
    }
    QWidget::mousePressEvent(event);
}
 
void QCalendarPopup::mouseReleaseEvent(QMouseEvent*)
{
    emit resetButton();
}
 
bool QCalendarPopup::event(QEvent *event)
{
#if QT_CONFIG(shortcut)
    if (event->type() == QEvent::KeyPress) {
        QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);
        if (keyEvent->matches(QKeySequence::Cancel))
            dateChanged = false;
    }
#endif
    return QWidget::event(event);
}
 
void QCalendarPopup::dateSelectionChanged()
{
    dateChanged = true;
    emit newDateSelected(verifyCalendarInstance()->selectedDate());
}
void QCalendarPopup::dateSelected(QDate date)
{
    dateChanged = true;
    emit activated(date);
    close();
}
 
void QCalendarPopup::hideEvent(QHideEvent *)
{
    emit resetButton();
    if (!dateChanged)
        emit hidingCalendar(oldDate);
}
 
QT_END_NAMESPACE
#include "moc_qdatetimeedit.cpp"
#include "moc_qdatetimeedit_p.cpp"