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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commite2de64d6f1beb9e492daf5b886e19933c1fa41dd (patch)
tree9047cf9e6b5c43878d5bf82660adae77ceee097a /juk/dynamicplaylist.h
downloadtdemultimedia-e2de64d6f1beb9e492daf5b886e19933c1fa41dd.tar.gz
tdemultimedia-e2de64d6f1beb9e492daf5b886e19933c1fa41dd.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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+/***************************************************************************
+ begin : Mon May 5 2003
+ copyright : (C) 2003 - 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. *
+ * *
+ ***************************************************************************/
+
+#ifndef DYNAMICPLAYLIST_H
+#define DYNAMICPLAYLIST_H
+
+#include "playlist.h"
+
+/**
+ * A Playlist that is a union of other playlists that is created dynamically.
+ */
+
+class DynamicPlaylist : public Playlist
+{
+ Q_OBJECT
+public:
+ /**
+ * Creates a dynamic playlist based on lists.
+ */
+ DynamicPlaylist(const PlaylistList &lists,
+ PlaylistCollection *collection,
+ const QString &name = QString::null,
+ const QString &iconName = "midi",
+ bool setupPlaylist = true,
+ bool synchronizePlaying = false);
+
+ virtual ~DynamicPlaylist();
+
+ virtual bool canReload() const { return false; }
+
+ void setPlaylists(const PlaylistList &playlists);
+
+public slots:
+ /**
+ * Reimplemented so that it will reload all of the playlists that are
+ * associated with the dynamic list.
+ */
+ virtual void slotReload();
+ void slotSetDirty() { m_dirty = true; }
+
+ /**
+ * This is called when lowering the widget from the widget stack so that
+ * it can synchronize the playing item with the one that playlist it was
+ * create from.
+ */
+ void lower(QWidget *top = 0);
+
+protected:
+ /**
+ * Returns true if this list's items need to be updated the next time it's
+ * shown.
+ */
+ bool dirty() const { return m_dirty; }
+
+ /**
+ * Return a list of the items in this playlist. For example in a search
+ * list this should return only the matched items. By default it returns
+ * all of the items in the playlists associated with this dynamic list.
+ */
+ virtual PlaylistItemList items();
+
+ /**
+ * Reimplemented from QWidget. Here it updates the list of items (when
+ * appropriate) as the widget is shown.
+ */
+ virtual void showEvent(QShowEvent *e);
+
+ virtual void paintEvent(QPaintEvent *e);
+
+ /**
+ * Updates the items (unconditionally). This should be reimplemented in
+ * subclasses to refresh the items in the dynamic list (i.e. running a
+ * search).
+ */
+ virtual void updateItems();
+
+ bool synchronizePlaying() const;
+
+private:
+ /**
+ * Checks to see if the current list of items is "dirty" and if so updates
+ * this dynamic playlist's items to be in sync with the lists that it is a
+ * wrapper around.
+ */
+ void checkUpdateItems();
+
+private slots:
+ void slotUpdateItems();
+
+private:
+ QValueList<PlaylistObserver *> m_observers;
+ PlaylistItemList m_siblings;
+ PlaylistList m_playlists;
+ bool m_dirty;
+ bool m_synchronizePlaying;
+};
+
+#endif