/* This file is part of the KDE project
   Copyright (C) 2004 Cedric Pasteur <cedric.pasteur@free.fr>
   Copyright (C) 2004 Alexander Dymo <cloudtemple@mskat.net>
   Copyright (C) 2012 Friedrich W. H. Kossebau <kossebau@kde.org>
   Copyright (C) 2015 Jarosław Staniek <staniek@kde.org>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
*/

#include "datetimeedit.h"
#include "KPropertyWidgetsFactory.h"
#include "KPropertyUtils.h"

#include <QLocale>

KPropertyDateTimeEditor::KPropertyDateTimeEditor(const KProperty* prop, QWidget* parent)
  : QDateTimeEdit(parent)
{
    setFrame(false);
    setCalendarPopup(true);

    if (prop->hasOptions()) {
        const QDateTime minDateTime = prop->option("min", minimumDateTime()).toDateTime();
        const QDateTime maxDateTime = prop->option("max", maximumDateTime()).toDateTime();
        if (minDateTime.isValid() && maxDateTime.isValid() && minDateTime <= maxDateTime) {
            setDateTimeRange(minDateTime, maxDateTime);
        }
        const QString minValueText(prop->option("minValueText").toString());
        if (!minValueText.isEmpty()) {
            setSpecialValueText(minValueText);
        }
    }
    connect(this, SIGNAL(dateTimeChanged(QDateTime)), this, SLOT(onDateTimeChanged()));
}

KPropertyDateTimeEditor::~KPropertyDateTimeEditor()
{
}

QVariant KPropertyDateTimeEditor::value() const
{
    return QVariant(dateTime());
}

void KPropertyDateTimeEditor::setValue(const QVariant& value)
{
    blockSignals(true);
    setDateTime(value.toDateTime());
    blockSignals(false);
}

void KPropertyDateTimeEditor::paintEvent(QPaintEvent* event)
{
    QDateTimeEdit::paintEvent(event);
    KPropertyWidgetsFactory::paintTopGridLine(this);
}


void KPropertyDateTimeEditor::onDateTimeChanged()
{
    emit commitData(this);
}


//! @todo Port to KLocale, be inspired by KexiDateTimeTableEdit (with Kexi*Formatter)
KPropertyDateTimeDelegate::KPropertyDateTimeDelegate()
{
}

QString KPropertyDateTimeDelegate::valueToString(const QVariant& value, const QLocale &locale) const
{
    const QString defaultDateTimeFormat = locale.dateTimeFormat(QLocale::ShortFormat);
    return value.toDateTime().toString(defaultDateTimeFormat);
}

QWidget* KPropertyDateTimeDelegate::createEditor(int type, QWidget* parent,
    const QStyleOptionViewItem& option, const QModelIndex& index) const
{
    Q_UNUSED(type);
    Q_UNUSED(option);

    KProperty *prop = KPropertyUtils::propertyForIndex(index);
    if (!prop) {
        return nullptr;
    }
    return new KPropertyDateTimeEditor(prop, parent);
}
