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-rw-r--r--juk/playlistinterface.cpp80
1 files changed, 80 insertions, 0 deletions
diff --git a/juk/playlistinterface.cpp b/juk/playlistinterface.cpp
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+++ b/juk/playlistinterface.cpp
@@ -0,0 +1,80 @@
+/***************************************************************************
+ copyright : (C) 2004 by Scott Wheeler
+ email : wheeler@kde.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. *
+ * *
+ ***************************************************************************/
+
+#include "playlistinterface.h"
+
+////////////////////////////////////////////////////////////////////////////////
+// Watched implementation
+////////////////////////////////////////////////////////////////////////////////
+
+void Watched::currentChanged()
+{
+ for(QValueList<PlaylistObserver *>::ConstIterator it = m_observers.begin();
+ it != m_observers.end();
+ ++it)
+ {
+ (*it)->updateCurrent();
+ }
+}
+
+void Watched::dataChanged()
+{
+ for(QValueList<PlaylistObserver *>::ConstIterator it = m_observers.begin();
+ it != m_observers.end();
+ ++it)
+ {
+ (*it)->updateData();
+ }
+}
+
+void Watched::addObserver(PlaylistObserver *observer)
+{
+ m_observers.append(observer);
+}
+
+void Watched::removeObserver(PlaylistObserver *observer)
+{
+ m_observers.remove(observer);
+}
+
+Watched::~Watched()
+{
+ for(QValueList<PlaylistObserver *>::Iterator it = m_observers.begin();
+ it != m_observers.end();
+ ++it)
+ {
+ (*it)->clearWatched();
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// PlaylistObserver implementation
+////////////////////////////////////////////////////////////////////////////////
+
+PlaylistObserver::~PlaylistObserver()
+{
+ if(m_playlist)
+ m_playlist->removeObserver(this);
+}
+
+PlaylistObserver::PlaylistObserver(PlaylistInterface *playlist) :
+ m_playlist(playlist)
+{
+ playlist->addObserver(this);
+}
+
+const PlaylistInterface *PlaylistObserver::playlist() const
+{
+ return m_playlist;
+}