AvailableVoicesModel.h

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#ifndef OSMSCOUT_CLIENT_QT_VAILABLEVOICESMODEL_H
#define OSMSCOUT_CLIENT_QT_VAILABLEVOICESMODEL_H

/*
  OSMScout - a Qt backend for libosmscout and libosmscout-map
  Copyright (C) 2020 Lukas Karas

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library 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
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
*/

#include <osmscout/VoiceProvider.h>
#include <osmscout/VoiceManager.h>
#include <osmscout/Voice.h>

#include <osmscout/ClientQtImportExport.h>

#include <QAbstractListModel>
#include <QNetworkDiskCache>
#include <QNetworkAccessManager>

namespace osmscout {

class OSMSCOUT_CLIENT_QT_API AvailableVoicesModel : public QAbstractListModel {
  Q_OBJECT

  Q_PROPERTY(bool loading READ isLoading NOTIFY loadingChanged)
  Q_PROPERTY(QString fetchError READ getFetchError NOTIFY loadingChanged)

signals:
  void loadingChanged();

public slots:
  void listDownloaded(const VoiceProvider &provider, QNetworkReply*);
  void reload();

  void onVoiceStateChanged(const AvailableVoice &voice);

public:
  AvailableVoicesModel();

  virtual ~AvailableVoicesModel();

  enum Roles {
    NameRole = Qt::UserRole,
    LangRole = Qt::UserRole + 1,
    GenderRole = Qt::UserRole + 2,
    LicenseRole = Qt::UserRole + 3,
    DirectoryRole = Qt::UserRole + 4,
    AuthorRole = Qt::UserRole + 5,
    DescriptionRole = Qt::UserRole + 6,
    StateRole = Qt::UserRole + 7
  };
  Q_ENUM(Roles)

  enum VoiceState {
    Available,
    Downloading,
    Downloaded
  };
  Q_ENUM(VoiceState)

  Q_INVOKABLE virtual int rowCount(const QModelIndex &parent = QModelIndex()) const;
  Q_INVOKABLE virtual QVariant data(const QModelIndex &index, int role) const;
  virtual QHash<int, QByteArray> roleNames() const;
  Q_INVOKABLE virtual Qt::ItemFlags flags(const QModelIndex &index) const;

  Q_INVOKABLE void download(const QModelIndex &index);
  Q_INVOKABLE void remove(const QModelIndex &index);

  Q_INVOKABLE QString stateStr(VoiceState state) const;

  inline bool isLoading(){
    return requests>0;
  }

  inline QString getFetchError(){
    return fetchError;
  }

private:
  int findRow(const QString &lang, const QString &name);

private:
  VoiceManagerRef           voiceManager;
  QNetworkAccessManager     webCtrl;
  QNetworkDiskCache         diskCache;
  QList<VoiceProvider>      voiceProviders;
  size_t                    requests{0};
  QList<AvailableVoice*>    items;
  QString                   fetchError;
};

}

#endif //OSMSCOUT_CLIENT_QT_VAILABLEVOICESMODEL_H