chrome/browser/chromeos/media/media_player.h

// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_CHROMEOS_MEDIA_MEDIA_PLAYER_H_
#define CHROME_BROWSER_CHROMEOS_MEDIA_MEDIA_PLAYER_H_

#include <vector>

#include "base/memory/singleton.h"

template <typename T> struct DefaultSingletonTraits;

class Browser;
class GURL;

class MediaPlayer {
 public:
  typedef std::vector<GURL> UrlVector;

  virtual ~MediaPlayer();

  // Adjusts the mediaplayer window height.
  void AdjustWindowHeight(int height_diff);

  // Forces the mediaplayer window to be closed.
  void CloseWindow();

  // Clears the current playlist.
  void ClearPlaylist();

  // Enqueues this fileschema url into the current playlist.
  void EnqueueMediaFileUrl(const GURL& url);

  // Clears out the current playlist, and start playback of the given url.
  void ForcePlayMediaURL(const GURL& url);

  // Popup the mediaplayer, this shows the browser, and sets up its
  // locations correctly.
  void PopupMediaPlayer();

  // Sets the currently playing element to the given positions.
  void SetPlaylistPosition(int position);

  // Returns current playlist.
  const UrlVector& GetPlaylist() const;

  // Returns current playlist position.
  int GetPlaylistPosition() const;

  // Notfies the mediaplayer that the playlist changed. This could be
  // called from the mediaplayer itself for example.
  void NotifyPlaylistChanged();

  // Getter for the singleton.
  static MediaPlayer* GetInstance();

 private:
  friend class MediaPlayerBrowserTest;
  friend struct DefaultSingletonTraits<MediaPlayer>;

  // The current playlist of urls.
  UrlVector current_playlist_;

  // The position into the current_playlist_ of the currently playing item.
  int current_position_;

  MediaPlayer();

  static GURL GetMediaPlayerUrl();

  // Browser containing the Mediaplayer.
  static Browser* GetBrowser();

  DISALLOW_COPY_AND_ASSIGN(MediaPlayer);
};

#endif  // CHROME_BROWSER_CHROMEOS_MEDIA_MEDIA_PLAYER_H_