/*
   Strawberry Music Player
   This file was part of Clementine.
   Copyright 2010, David Sansome <me@davidsansome.com>

   Strawberry 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.

   Strawberry 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 Strawberry.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef ANALYZERCONTAINER_H
#define ANALYZERCONTAINER_H

#include "config.h"

#include <stdbool.h>

#include <QObject>
#include <QWidget>
#include <QPoint>
#include <QMenu>
#include <QAction>
#include <QActionGroup>
#include <QList>
#include <QString>
#include <QSignalMapper>
#include <QTimer>
#include <QtEvents>

#include "engine/engine_fwd.h"

class QMouseEvent;
class QWheelEvent;

namespace Analyzer {
class Base;
}  // namespace Analyzer

class AnalyzerContainer : public QWidget {
  Q_OBJECT

 public:
  AnalyzerContainer(QWidget* parent);

  void SetEngine(EngineBase *engine);
  void SetActions(QAction *visualisation);

  static const char *kSettingsGroup;
  static const char *kSettingsFramerate;

signals:
  void WheelEvent(int delta);

 protected:
  void mouseReleaseEvent(QMouseEvent*);
  void mouseDoubleClickEvent(QMouseEvent*);
  void wheelEvent(QWheelEvent *e);

 private slots:
  void ChangeAnalyzer(int id);
  void ChangeFramerate(int new_framerate);
  void DisableAnalyzer();
  void ShowPopupMenu();

 private:
  static const int kLowFramerate;
  static const int kMediumFramerate;
  static const int kHighFramerate;
  static const int kSuperHighFramerate;

  void Load();
  void Save();
  void SaveFramerate(int framerate);
  template <typename T>
  void AddAnalyzerType();
  void AddFramerate(const QString& name, int framerate);

 private:
  int current_framerate_;  // fps
  QMenu *context_menu_;
  QMenu *context_menu_framerate_;
  QActionGroup *group_;
  QActionGroup *group_framerate_;
  QSignalMapper *mapper_;
  QSignalMapper *mapper_framerate_;

  QList<const QMetaObject*> analyzer_types_;
  QList<int> framerate_list_;
  QList<QAction*> actions_;
  QAction *disable_action_;

  QAction *visualisation_action_;
  QTimer *double_click_timer_;
  QPoint last_click_pos_;
  bool ignore_next_click_;

  Analyzer::Base* current_analyzer_;
  EngineBase *engine_;

};

template <typename T>
void AnalyzerContainer::AddAnalyzerType() {
  int id = analyzer_types_.count();
  analyzer_types_ << &T::staticMetaObject;

  QAction *action = context_menu_->addAction(tr(T::kName), mapper_, SLOT(map()));
  group_->addAction(action);
  mapper_->setMapping(action, id);
  action->setCheckable(true);
  actions_ << action;
}

#endif