kcms/region_language/languagelistmodel.h

0001 /*
0002     languagelistmodel.cpp
0003     SPDX-FileCopyrightText: 2021 Han Young <hanyoung@protonmail.com>
0004     SPDX-FileCopyrightText: 2019 Kevin Ottens <kevin.ottens@enioka.com>
0005     SPDX-License-Identifier: GPL-2.0-or-later
0006 */
0007
0008 #pragma once
0009
0010 #include <QAbstractListModel>
0011
0012 class SelectedLanguageModel;
0013 class RegionAndLangSettings;
0014 class KCMRegionAndLang;
0015 class LanguageListModel : public QAbstractListModel
0016 {
0017     Q_OBJECT
0018     Q_PROPERTY(SelectedLanguageModel *selectedLanguageModel READ selectedLanguageModel CONSTANT)
0019     Q_PROPERTY(int currentIndex READ currentIndex WRITE setCurrentIndex NOTIFY currentIndexChanged)
0020     Q_PROPERTY(QString numberExample READ numberExample NOTIFY exampleChanged)
0021     Q_PROPERTY(QString currencyExample READ currencyExample NOTIFY exampleChanged)
0022     Q_PROPERTY(QString timeExample READ timeExample NOTIFY exampleChanged)
0023     Q_PROPERTY(QString metric READ metric NOTIFY exampleChanged)
0024     Q_PROPERTY(bool isPreviewExample READ isPreviewExample WRITE setIsPreviewExample NOTIFY isPreviewExampleChanged)
0025 public:
0026     enum Roles { NativeName = Qt::UserRole + 1, LanguageCode, Flag };
0027     explicit LanguageListModel(QObject *parent = nullptr);
0028
0029     int rowCount(const QModelIndex &parent = QModelIndex()) const override;
0030     QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
0031     QHash<int, QByteArray> roleNames() const override;
0032
0033     SelectedLanguageModel *selectedLanguageModel() const;
0034
0035     int currentIndex() const;
0036     void setCurrentIndex(int index);
0037     QString numberExample() const;
0038     QString currencyExample() const;
0039     QString timeExample() const;
0040     QString paperSizeExample() const;
0041 #ifdef LC_ADDRESS
0042     QString addressExample() const;
0043     QString nameStyleExample() const;
0044     QString phoneNumbersExample() const;
0045 #endif
0046     QString metric() const;
0047
0048     // currently unused, but we need it if we want preview examples in add langauge overlay
0049     bool isPreviewExample() const;
0050     void setIsPreviewExample(bool preview);
0051
0052     Q_INVOKABLE void setRegionAndLangSettings(QObject *settings, QObject *kcm);
0053 Q_SIGNALS:
0054     void currentIndexChanged();
0055     void exampleChanged();
0056     void isPreviewExampleChanged();
0057
0058 protected:
0059     friend class SelectedLanguageModel;
0060     static QString languageCodeToName(const QString &languageCode);
0061     bool isSupportedLanguage(const QString &language) const;
0062
0063 private:
0064     QString exampleHelper(const std::function<QString(const QLocale &)> &func) const;
0065     RegionAndLangSettings *m_settings{nullptr};
0066     QList<QString> m_availableLanguages;
0067     SelectedLanguageModel *m_selectedLanguageModel;
0068     int m_index = -1;
0069     bool m_isPreviewExample = false;
0070 };
0071
0072 class SelectedLanguageModel : public QAbstractListModel
0073 {
0074     Q_OBJECT
0075     Q_PROPERTY(bool shouldWarnMultipleLang READ shouldWarnMultipleLang NOTIFY shouldWarnMultipleLangChanged)
0076     Q_PROPERTY(bool hasImplicitLang READ hasImplicitLang NOTIFY hasImplicitLangChanged)
0077     Q_PROPERTY(QString unsupportedLanguage READ unsupportedLanguage NOTIFY unsupportedLanguageChanged)
0078 public:
0079     explicit SelectedLanguageModel(LanguageListModel *parent = nullptr);
0080
0081     int rowCount(const QModelIndex &parent = QModelIndex()) const override;
0082     QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
0083     void setRegionAndLangSettings(RegionAndLangSettings *settings, KCMRegionAndLang *kcm);
0084
0085     bool shouldWarnMultipleLang() const;
0086     bool hasImplicitLang() const;
0087     const QString &unsupportedLanguage() const;
0088
0089     Q_INVOKABLE void move(int from, int to);
0090     Q_INVOKABLE void remove(int index);
0091     Q_INVOKABLE void addLanguage(const QString &lang);
0092     Q_INVOKABLE void replaceLanguage(int index, const QString &lang);
0093 Q_SIGNALS:
0094     void exampleChanged();
0095     void shouldWarnMultipleLangChanged();
0096     void hasImplicitLangChanged();
0097     void unsupportedLanguageChanged();
0098
0099 private:
0100     void saveLanguages();
0101     RegionAndLangSettings *m_settings = nullptr;
0102     QList<QString> m_selectedLanguages;
0103     bool m_hasImplicitLang = false;
0104     QString m_unsupportedLanguage;
0105     KCMRegionAndLang *m_kcm = nullptr;
0106     LanguageListModel *m_parent = nullptr;
0107 };