plasma-workspace/applets/digital-clock/plugin/timezonemodel.h

/*
    SPDX-FileCopyrightText: 2014 Kai Uwe Broulik <kde@privat.broulik.de>
    SPDX-FileCopyrightText: 2014 Martin Klapetek <mklapetek@kde.org>

    SPDX-License-Identifier: GPL-2.0-or-later
*/

#pragma once

#include <QAbstractListModel>
#include <QSortFilterProxyModel>

#include "timezonedata.h"

class TimezonesI18n;

class TimeZoneFilterProxy : public QSortFilterProxyModel
{
    Q_OBJECT
    Q_PROPERTY(QString filterString WRITE setFilterString MEMBER m_filterString NOTIFY filterStringChanged)
    Q_PROPERTY(bool onlyShowChecked WRITE setOnlyShowChecked MEMBER m_onlyShowChecked NOTIFY onlyShowCheckedChanged)

public:
    explicit TimeZoneFilterProxy(QObject *parent = nullptr);
    bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const override;

    void setFilterString(const QString &filterString);
    void setOnlyShowChecked(const bool show);

Q_SIGNALS:
    void filterStringChanged();
    void onlyShowCheckedChanged();

private:
    QString m_filterString;
    bool m_onlyShowChecked = false;
    QStringMatcher m_stringMatcher;
};

//=============================================================================

class TimeZoneModel : public QAbstractListModel
{
    Q_OBJECT
    Q_PROPERTY(QStringList selectedTimeZones WRITE setSelectedTimeZones MEMBER m_selectedTimeZones NOTIFY selectedTimeZonesChanged)

public:
    explicit TimeZoneModel(QObject *parent = nullptr);
    ~TimeZoneModel() override;

    enum Roles {
        TimeZoneIdRole = Qt::UserRole + 1,
        RegionRole,
        CityRole,
        CommentRole,
        CheckedRole,
        IsLocalTimeZoneRole,
    };

    int rowCount(const QModelIndex &parent) const override;
    QVariant data(const QModelIndex &index, int role) const override;
    bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole) override;

    void update();
    void setSelectedTimeZones(const QStringList &selectedTimeZones);

    Q_INVOKABLE void selectLocalTimeZone();

Q_SIGNALS:
    void selectedTimeZonesChanged();

protected:
    QHash<int, QByteArray> roleNames() const override;

private:
    void sortTimeZones();

    QList<TimeZoneData> m_data;
    QHash<QString, int> m_offsetData; // used for sorting
    QStringList m_selectedTimeZones;
    TimezonesI18n *m_timezonesI18n;
};