/*
  This file is part of the KTextTemplate library

  SPDX-FileCopyrightText: 2010 Stephen Kelly <steveire@gmail.com>

  SPDX-License-Identifier: LGPL-2.1-or-later

*/

#ifndef KTEXTTEMPLATE_QTLOCALIZER_P_H
#define KTEXTTEMPLATE_QTLOCALIZER_P_H

#include "abstractlocalizer.h"

class QTranslator;

namespace KTextTemplate
{

class QtLocalizerPrivate;

/*!
  \class KTextTemplate::QtLocalizer
  \inheaderfile KTextTemplate/QtLocalizer
  \inmodule KTextTemplate

  \brief Provides internationalization based on QLocale and QTranslator.

  This class implements access to the %Qt Localization system. Localizable
  types such as strings, numbers, dates and times can be processed.

  \code
    auto t = m_engine->loadTemplate(someTemplate);
    auto c = getContext();

    // Render with the German locale
    c.setLocalizer(m_de_Localizer);
    auto deText = t->render(&c);
    de_display->setText(deText);

    // Render with the French locale
    c.setLocalizer(m_fr_Localizer);
    auto frText = t->render(&c);
    fr_display->setText(frText);
  \endcode

*/
class KTEXTTEMPLATE_EXPORT QtLocalizer : public AbstractLocalizer
{
public:
    /*!
      Constructs a new QtLocalizer using the \a locale
    */
    QtLocalizer(const QLocale &locale = QLocale::system());

    ~QtLocalizer() override;

    /*!
      Set the path to look for translations of the application strings.
     */
    void setAppTranslatorPath(const QString &path);

    /*!
      Set the prefix of translation files. For example, if the German translation
      file is called myapp_de_DE.qm, the prefix should be set to
      myapp_.
     */
    void setAppTranslatorPrefix(const QString &prefix);

    /*!
      Install a \a translator to use for a particular \a localeName.

      \code
        auto deTranslator = new QTranslator(this);
        auto loaded = deTranslator->load("myapp_de_DE");
        if (!loaded)
          return;

        de_localizer->installTranslator(deTranslator, "de_DE");
      \endcode
     */
    void installTranslator(QTranslator *translator, const QString &localeName = QLocale::system().name());

    QString currentLocale() const override;
    void pushLocale(const QString &localeName) override;
    void popLocale() override;
    void loadCatalog(const QString &path, const QString &catalog) override;
    void unloadCatalog(const QString &catalog) override;

    QString localizeNumber(int number) const override;
    QString localizeNumber(qreal number) const override;
    QString localizeMonetaryValue(qreal value, const QString &currencyCode = {}) const override;
    QString localizeDate(const QDate &date, QLocale::FormatType formatType = QLocale::ShortFormat) const override;
    QString localizeTime(const QTime &time, QLocale::FormatType formatType = QLocale::ShortFormat) const override;
    QString localizeDateTime(const QDateTime &dateTime, QLocale::FormatType formatType = QLocale::ShortFormat) const override;
    QString localizeString(const QString &string, const QVariantList &arguments = {}) const override;
    QString localizeContextString(const QString &string, const QString &context, const QVariantList &arguments = {}) const override;
    QString
    localizePluralContextString(const QString &string, const QString &pluralForm, const QString &context, const QVariantList &arguments = {}) const override;
    QString localizePluralString(const QString &string, const QString &pluralForm, const QVariantList &arguments = {}) const override;

private:
    Q_DECLARE_PRIVATE(QtLocalizer)
    Q_DISABLE_COPY(QtLocalizer)
    QtLocalizerPrivate *const d_ptr;
};
}

#endif