languagechooser.h Example File

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  #ifndef LANGUAGECHOOSER_H
  #define LANGUAGECHOOSER_H

  #include <QDialog>
  #include <QMap>
  #include <QStringList>

  class QAbstractButton;
  class QCheckBox;
  class QDialogButtonBox;
  class QGroupBox;

  class MainWindow;

  class LanguageChooser : public QDialog
  {
      Q_OBJECT

  public:
      explicit LanguageChooser(const QString& defaultLang = QString(), QWidget *parent = 0);

  protected:
      bool eventFilter(QObject *object, QEvent *event) override;
      void closeEvent(QCloseEvent *event) override;

  private slots:
      void checkBoxToggled();
      void showAll();
      void hideAll();

  private:
      QStringList findQmFiles();
      QString languageName(const QString &qmFile);
      QColor colorForLanguage(const QString &language);
      static bool languageMatch(const QString& lang, const QString& qmFile);

      QGroupBox *groupBox;
      QDialogButtonBox *buttonBox;
      QAbstractButton *showAllButton;
      QAbstractButton *hideAllButton;
      QMap<QCheckBox *, QString> qmFileForCheckBoxMap;
      QMap<QCheckBox *, MainWindow *> mainWindowForCheckBoxMap;
  };

  #endif