playlistselection.h

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.7平台上编译为嵌入式图形界面操作系统。

/**********************************************************************
** Copyright (C) 2000-2002 Trolltech AS.  All rights reserved.
**
** This file is part of the Qtopia Environment.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact [e-mail] if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#ifndef PLAY_LIST_SELECTION_H
#define PLAY_LIST_SELECTION_H


#include <qlistview.h>
#include <qtopia/applnk.h>

    
class PlayListSelectionData;
class PlayListSelectionItem;
class CategorySelect;
class QComboBox;


class PlayListSelection : public QListView {
    Q_OBJECT
public:
    PlayListSelection( QWidget *parent, const char *name=0 );
    ~PlayListSelection();

    const DocLnk *current(); // retrieve the current playlist entry (media file link)

    void setCategoryFilter( CategorySelect* );
    void setLocationFilter( QComboBox* );
    bool advanceSelection();

public slots:
    void addLink( const DocLnk& );
    void removeLink( const DocLnk& );
    void changeLink( const DocLnk&, const DocLnk& );

    void addToSelection( const DocLnk& ); // Add a media file to the playlist
    void removeSelected();   // Remove a media file from the playlist
    void moveSelectedUp();   // Move the media file up the playlist so it is played earlier
    void moveSelectedDown(); // Move the media file down the playlist so it is played later
    bool prev();
    bool next();
    bool first();
    bool last();

    void showItemProperties( QListViewItem *i );

protected:
    virtual void viewportResizeEvent( QResizeEvent* );
    virtual void contentsMouseMoveEvent( QMouseEvent* );

private:
    bool filtersMatch( const DocLnk& lnk );
    PlayListSelectionItem *newItem( const DocLnk& lnk );
    void deleteItem( PlayListSelectionItem *item );
    bool sbVis;

    PlayListSelectionData *d;
};


#endif // PLAY_LIST_SELECTION_H