src/servicebrowser/ServiceInfoProxy.h

   1 /***************************************************************************
   2  *   Copyright (c) 2007  Nikolaj Hald Nielsen <nhnFreespirit@gmail.com>    *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
  18  ***************************************************************************/
  19
  20 #ifndef SERVICEINFOPROXY_H
  21 #define SERVICEINFOPROXY_H
  22
  23 #include "amarok_export.h"
  24 #include "ServiceInfoObserver.h"
  25
  26 #include <QVariant>
  27 #include <QSet>
  28
  29
  30 /**
  31 A proxy class for relaying information from the currently active service to the ServiceEngine so it can be displayed in a plasma applet in the context view. It is a singleton and included in the "THE" namespace for easy access
  32
  33         Nikolaj Hald Nielsen <nhnFreespirit@gmail.com>
  34 */
  35 class AMAROK_EXPORT ServiceInfoProxy{
  36 public:
  37
  38     static /*AMAROK_EXPORT*/ ServiceInfoProxy * instance();
  39     ~ServiceInfoProxy();
  40
  41     void /*AMAROK_EXPORT*/ subscribe( ServiceInfoObserver *observer );
  42     void /*AMAROK_EXPORT*/ unsubscribe( ServiceInfoObserver *observer );
  43
  44     void setInfo( QVariantMap infoMap );
  45     QVariantMap /*AMAROK_EXPORT*/ info();
  46
  47 private:
  48
  49     ServiceInfoProxy();
  50     void notifyObservers( QVariantMap infoMap ) const;
  51     QSet<ServiceInfoObserver *> m_observers;
  52
  53     static ServiceInfoProxy * m_instance;
  54
  55     QVariantMap m_storedInfo;
  56 };
  57
  58 #endif