////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2011-2023 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>

#include "gui-settings.h"

OCTAVE_BEGIN_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);

  gui_settings * get_settings (void) const;

  gui_settings * get_default_settings (void) const;

  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, gui_settings *settings,
                            int mode = 0, int def = 0);
#endif

  void set_settings (const QString& file);

  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:

  /*!
   * 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;

  gui_settings *m_settings;

  gui_settings *m_default_settings;

  QList<QTemporaryFile *> m_temporary_files;

  QStringList m_icon_fallbacks;
};

OCTAVE_END_NAMESPACE(octave)

#endif