1 files changed, 80 insertions, 0 deletions
diff --git a/juk/playlistinterface.cpp b/juk/playlistinterface.cpp
new file mode 100644
index 00000000..9ec550a2
--- /dev/null
+++ 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;
+}