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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
// Qt-Security score:significant reason:default
#include "qquickmonthmodel_p.h"
#include <QtCore/private/qabstractitemmodel_p.h>
#include <QtCore/qloggingcategory.h>
#include <QtCore/qtimezone.h>
namespace {
static const int daysInAWeek = 7;
static const int weeksOnACalendarMonth = 6;
static const int daysOnACalendarMonth = daysInAWeek * weeksOnACalendarMonth;
}
QT_BEGIN_NAMESPACE
Q_STATIC_LOGGING_CATEGORY(lcMonthModel, "qt.quick.controls.monthmodel")
class QQuickMonthModelPrivate : public QAbstractItemModelPrivate
{
Q_DECLARE_PUBLIC(QQuickMonthModel)
public:
QQuickMonthModelPrivate() : dates(daysOnACalendarMonth)
{
today = QDate::currentDate();
month = today.month();
year = today.year();
}
bool populate(int month, int year, const QLocale &locale, bool force = false);
int month;
int year;
QString title;
QLocale locale;
QList<QDateTime> dates;
QDate today;
};
bool QQuickMonthModelPrivate::populate(int m, int y, const QLocale &l, bool force)
{
Q_Q(QQuickMonthModel);
if (!force && m == month && y == year && l.firstDayOfWeek() == locale.firstDayOfWeek())
return false;
// The actual first (1st) day of the month.
const QDate firstDayOfMonthDate = QDate(y, m, 1);
// QDate is converted to local time when converted to a JavaScript Date,
// so if we stored our dates as QDates, it's possible that the date provided
// to delegates will be wrong in certain timezones:
// e.g. 00:00 UTC converted to UTC-8 is 16:00 the day before.
// To account for this, we store our dates as local QDateTimes.
const QDateTime firstDayOfMonthDateTime = firstDayOfMonthDate.startOfDay();
int difference = ((firstDayOfMonthDate.dayOfWeek() - l.firstDayOfWeek()) + 7) % 7;
// The first day to display should never be the 1st of the month, as we want some days from
// the previous month to be visible.
if (difference == 0)
difference += 7;
const QDateTime firstDateToDisplay = firstDayOfMonthDateTime.addDays(-difference);
today = QDate::currentDate();
for (int i = 0; i < daysOnACalendarMonth; ++i)
dates[i] = firstDateToDisplay.addDays(i);
q->setTitle(l.standaloneMonthName(m) + QStringLiteral(" ") + QString::number(y));
qCDebug(lcMonthModel) << "populated model for month" << m << "year" << y << "locale" << locale
<< "firstDayOfMonthDateTime" << firstDayOfMonthDateTime;
return true;
}
QQuickMonthModel::QQuickMonthModel(QObject *parent) :
QAbstractListModel(*(new QQuickMonthModelPrivate), parent)
{
Q_D(QQuickMonthModel);
d->populate(d->month, d->year, d->locale, true);
}
int QQuickMonthModel::month() const
{
Q_D(const QQuickMonthModel);
return d->month;
}
void QQuickMonthModel::setMonth(int month)
{
Q_D(QQuickMonthModel);
if (d->month != month) {
if (d->populate(month, d->year, d->locale))
emit dataChanged(index(0, 0), index(daysOnACalendarMonth - 1, 0));
d->month = month;
emit monthChanged();
}
}
int QQuickMonthModel::year() const
{
Q_D(const QQuickMonthModel);
return d->year;
}
void QQuickMonthModel::setYear(int year)
{
Q_D(QQuickMonthModel);
if (d->year != year) {
if (d->populate(d->month, year, d->locale))
emit dataChanged(index(0, 0), index(daysOnACalendarMonth - 1, 0));
d->year = year;
emit yearChanged();
}
}
QLocale QQuickMonthModel::locale() const
{
Q_D(const QQuickMonthModel);
return d->locale;
}
void QQuickMonthModel::setLocale(const QLocale &locale)
{
Q_D(QQuickMonthModel);
if (d->locale != locale) {
if (d->populate(d->month, d->year, locale))
emit dataChanged(index(0, 0), index(daysOnACalendarMonth - 1, 0));
d->locale = locale;
emit localeChanged();
}
}
QString QQuickMonthModel::title() const
{
Q_D(const QQuickMonthModel);
return d->title;
}
void QQuickMonthModel::setTitle(const QString &title)
{
Q_D(QQuickMonthModel);
if (d->title != title) {
d->title = title;
emit titleChanged();
}
}
QDateTime QQuickMonthModel::dateAt(int index) const
{
Q_D(const QQuickMonthModel);
return d->dates.value(index);
}
int QQuickMonthModel::indexOf(QDateTime date) const
{
Q_D(const QQuickMonthModel);
if (date < d->dates.first() || date > d->dates.last())
return -1;
return qMax(qint64(0), d->dates.first().daysTo(date));
}
QVariant QQuickMonthModel::data(const QModelIndex &index, int role) const
{
Q_D(const QQuickMonthModel);
if (index.isValid() && index.row() < daysOnACalendarMonth) {
const QDateTime dateTime = d->dates.at(index.row());
// As mentioned in populate, we store dates whose time is adjusted
// by the timezone offset, so we need to convert back to local time
// to get the correct date if the conversion to JavaScript's Date
// isn't being done for us.
const QDate date = d->dates.at(index.row()).toLocalTime().date();
switch (role) {
case DateRole:
return dateTime;
case DayRole:
return date.day();
case TodayRole:
return date == d->today;
case WeekNumberRole:
return date.weekNumber();
case MonthRole:
return date.month() - 1;
case YearRole:
return date.year();
default:
break;
}
}
return QVariant();
}
int QQuickMonthModel::rowCount(const QModelIndex &parent) const
{
if (parent.isValid())
return 0;
return daysOnACalendarMonth;
}
QHash<int, QByteArray> QQuickMonthModel::roleNames() const
{
QHash<int, QByteArray> roles;
roles[DateRole] = QByteArrayLiteral("date");
roles[DayRole] = QByteArrayLiteral("day");
roles[TodayRole] = QByteArrayLiteral("today");
roles[WeekNumberRole] = QByteArrayLiteral("weekNumber");
roles[MonthRole] = QByteArrayLiteral("month");
roles[YearRole] = QByteArrayLiteral("year");
return roles;
}
QT_END_NAMESPACE
#include "moc_qquickmonthmodel_p.cpp"