/*****************************************************************************
 * input_manager.hpp : Manage an input and interact with its GUI elements
 ****************************************************************************
 * Copyright (C) 2006-2008 the VideoLAN team
 * $Id: 8e728cbc19a2840eb4e27908e5e6b637c65a476e $
 *
 * Authors: Clément Stenac <zorglub@videolan.org>
 *
 * This program 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 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

#ifndef _INPUT_MANAGER_H_
#define _INPUT_MANAGER_H_

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <vlc_common.h>
#include <vlc_input.h>

#include "qt4.hpp"

#include <QObject>
#include <QEvent>

enum {
    PositionUpdate_Type = QEvent::User + IMEventType + 1,
    ItemChanged_Type,
    ItemStateChanged_Type,
    ItemTitleChanged_Type,
    ItemRateChanged_Type,
    VolumeChanged_Type,
    ItemSpuChanged_Type,
    ItemTeletextChanged_Type,
    InterfaceVoutUpdate_Type,
    StatisticsUpdate_Type,

    FullscreenControlToggle_Type = QEvent::User + IMEventType + 20,
    FullscreenControlShow_Type,
    FullscreenControlHide_Type,
    FullscreenControlPlanHide_Type,
};

class IMEvent : public QEvent
{
friend class InputManager;
    public:
    IMEvent( int type, int id ) : QEvent( (QEvent::Type)(type) )
    { i_id = id ; } ;
    virtual ~IMEvent() {};

private:
    int i_id;
};

class InputManager : public QObject
{
    Q_OBJECT;
    friend class MainInputManager;

public:
    InputManager( QObject *, intf_thread_t * );
    virtual ~InputManager();

    void delInput();
    bool hasInput() { return p_input && !p_input->b_dead
                            && vlc_object_alive (p_input); }
    bool hasAudio();
    bool hasVideo() { return hasInput() && b_video; }

    QString getName() { return oldName; }

private:
    intf_thread_t  *p_intf;
    input_thread_t *p_input;
    int             i_input_id;
    int             i_old_playing_status;
    QString         oldName;
    QString         artUrl;
    int             i_rate;
    bool            b_video;
    mtime_t         timeA, timeB;

    void customEvent( QEvent * );

    void addCallbacks();
    void delCallbacks();

    void UpdateRate();
    void UpdateMeta();
    void UpdateStatus();
    void UpdateNavigation();
    void UpdatePosition();
    void UpdateSPU();
    void UpdateTeletext();
    void UpdateArt();
    void UpdateVout();
    void UpdateStats();

    void AtoBLoop( int );

public slots:
    void setInput( input_thread_t * ); ///< Our controlled input changed
    void sliderUpdate( float ); ///< User dragged the slider. We get new pos
    /* SpeedRate Rate Management */
    void slower();
    void faster();
    void normalRate();
    void setRate( int );
    /* Menus */
    void sectionNext();
    void sectionPrev();
    void sectionMenu();
    /* Teletext */
    void telexSetPage( int );          ///< Goto teletext page
    void telexSetTransparency( bool ); ///< Transparency on teletext background
    void telexActivation( bool );      ///< Enable disable teletext buttons
    void activateTeletext( bool );     ///< Toggle buttons after click
    /* A to B Loop */
    void setAtoB();

private slots:
    void togglePlayPause();

signals:
    /// Send new position, new time and new length
    void positionUpdated( float , int, int );
    void rateChanged( int );
    void nameChanged( QString );
    /// Used to signal whether we should show navigation buttons
    void titleChanged( bool );
    void chapterChanged( bool );
    /// Statistics are updated
    void statisticsUpdated( input_item_t* );
    /// Play/pause status
    void statusChanged( int );
    void artChanged( input_item_t* );
    /// Teletext
    void teletextPossible( bool );
    void teletextActivated( bool );
    void teletextTransparencyActivated( bool );
    void newTelexPageSet( int );
    /// Advanced buttons
    void AtoBchanged( bool, bool );
    /// Vout
    void voutChanged( bool );
};

class MainInputManager : public QObject
{
    Q_OBJECT;
public:
    static MainInputManager *getInstance( intf_thread_t *_p_intf )
    {
        if( !instance )
            instance = new MainInputManager( _p_intf );
        return instance;
    }
    static void killInstance()
    {
        if( instance ) delete instance;
    }
    virtual ~MainInputManager();

    input_thread_t *getInput() { return p_input; };
    InputManager *getIM() { return im; };

private:
    MainInputManager( intf_thread_t * );
    static MainInputManager *instance;

    void customEvent( QEvent * );

    InputManager            *im;
    input_thread_t          *p_input;
    intf_thread_t           *p_intf;

public slots:
    void togglePlayPause();
    void stop();
    void next();
    void prev();

signals:
    void inputChanged( input_thread_t * );
    void volumeChanged();
};

#endif
