////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2011-2022 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// This file is part of Octave.
//
// Octave is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Octave 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Octave; see the file COPYING.  If not, see
// <https://www.gnu.org/licenses/>.
//
////////////////////////////////////////////////////////////////////////

#if ! defined (octave_resource_manager_h)
#define octave_resource_manager_h 1

#include <QComboBox>
#include <QIcon>
#include <QPointer>
#if defined (HAVE_QSCINTILLA)
#  include <Qsci/qscilexer.h>
#endif
#include <QTranslator>
#include <QTemporaryFile>

namespace octave
{
  class resource_manager : public QObject
  {
    Q_OBJECT

  protected:

  public:

    resource_manager (void);

    // No copying!

    resource_manager (const resource_manager&) = delete;

    resource_manager& operator = (const resource_manager&) = delete;

    ~resource_manager ();

    QString get_gui_translation_dir (void);

    void config_translators (QTranslator *qt_tr, QTranslator *qsci_tr,
                             QTranslator *gui_tr);
    void config_icon_theme (void);

    QString get_settings_directory (void);

    QString get_settings_file (void);

    QString get_default_font_family (void);

    QStringList get_default_font (void);

    QPointer<QTemporaryFile>
    create_tmp_file (const QString& extension = QString (),
                     const QString& contents = QString ());

    void remove_tmp_file (QPointer<QTemporaryFile> tmp_file);

    void reload_settings (void);

#if defined (HAVE_QSCINTILLA)
    int get_valid_lexer_styles (QsciLexer *lexer, int *styles);
    void read_lexer_settings (QsciLexer *lexer, int mode = 0, int def = 0);
#endif

    bool update_settings_key (const QString& new_key, const QString& old_key);

    bool is_first_run (void) const;

    void update_network_settings (void);

    QIcon icon (const QString& icon_name, bool octave_only = false,
                const QString& icon_alt_name = QString ());

    void get_codecs (QStringList *codecs);

    void combo_encoding (QComboBox *combo, const QString& current = QString ());

  private:

    void check_settings (void);

    /*!
     * Copys the attributes bold, italic and underline from QFont
     * @p attr to the font @p base and returns the result without
     * changing @p base,
     * @param attr QFont with the desired attributes
     * @param base QFont with desired family and size
    */
    QFont copy_font_attributes (const QFont& attr, const QFont& base) const;

    QString m_settings_directory;

    QString m_settings_file;

    QList<QTemporaryFile *> m_temporary_files;

    QStringList m_icon_fallbacks;
  };
}

#endif