xiaoningsdiary/include/MediaPlayer/PlaylistEditorDialog.h

/*  Copyright (C) 2009 Väinö Lappi <djap84@gmail.com>

    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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

/*
 * PlaylistEditorDialog.h
 *
 *  Created on: 11.5.2009
 *      Author: djap
 */

#ifndef PLAYLISTEDITORDIALOG_H_
#define PLAYLISTEDITORDIALOG_H_

#include <QtGui/QDialog>
#include <QStringList>
#include <QHeaderView>
#include <QStandardItemModel>
#include <QDir>
#include <QMutex>
#include <QWaitCondition>

#include "../../ui_PlaylistEditor.h"

#define MAX_REMEMBERED_RANDOM_PREVIOUS_SONGS 50         //How big list of previously played songs I want to keep when playing in random order

class PlaylistTreeWidget;
class QTreeWidgetItem;
class PlaylistFolderAdder;
class PlaylistChildThreadsTracker;

class PlaylistEditorDialog: public QDialog {
         Q_OBJECT
public:
        PlaylistEditorDialog(QWidget *aParent);
        virtual ~PlaylistEditorDialog();

        Ui_GlobalPlaylistEditorDialog ui;

        void PopulateList(const QStringList &fileNameList, const QStringList &FullPathList);
        
        virtual bool LoadPlaylist(const QString &fullPlaylistPath);
        
        virtual bool SavePlaylist(const QString &fullPlaylistPath);

        bool getNext(QString &absoluteFileName, bool checkRandom = true);

        bool getPrevious(QString &absoluteFileName, bool checkRandom = true);

        QString getCurrent();
        unsigned getResumeValue();
        unsigned getNowPlayingIndex();                  //Get the number of file now being played
        void setNowPlayingIndex(unsigned val);  //Set the number of file being played, used for setting starting point when starting.
        void setResumeValue(unsigned value);
        virtual void StopThreads();
        void HandleUiLanguageChange();
protected:
        /*
         * Random a file to play 
         */
        bool getRandomFile(QString &absoluteFileName);
        bool getPreviousRandomFile(QString &absoluteFileName);
protected:
//      QWaitCondition iDelay;  //I use this only to create some delay in destructor.
        int iPreviousSongs[MAX_REMEMBERED_RANDOM_PREVIOUS_SONGS];       //use this to store the last played song indexes when playing in random order
        int iPreviousSongsIndexCounter;
        PlaylistChildThreadsTracker* iChildThreadTracker;
public:
        QGridLayout *iListLayout;
        PlaylistTreeWidget *iPlayListtreeWidget;
protected:
        int iNowPlayingIndex;
        unsigned iResumePlayingLocation;        //This is used to store the progress of the song that was being played
                                                                                //Needed when there is something to be played for the day the user have switched
                                                                                //to and we need to start playing day specific playlist instead of this
                                                                                //The value is stored when switching and used to resume when continuing to
                                                                                //play from this list again.
public slots:
        //From outside
        void PreviousRequested();
        void NextRequested();
        void CurrentRequested();
        //internal/from objects owned by this
        void itemDoubleclicked(QTreeWidgetItem * item, int column);
        virtual void OpenClicked();
        void RemoveSelectedClicked();
        void AddFolderClicked();
        void RandomPlayOrderToggled(bool checked);
        /*
         * Add a new entry at the end of the list.
         */
        void Append(const QString &fileName, const QString &FullPath);
        void RemoveItem(QTreeWidgetItem *item);
signals:
        void PlayFile(const QString &fullName);
        void ListGotContent();  //Emitted in case an empty list got some content
        void ListWasEmptied();  //Emitted in case all content was removed from list
};

#endif /* PLAYLISTEDITORDIALOG_H_ */

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