/*************************************************************************** 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 TQString &name = TQString(), const TQString &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(TQWidget *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 TQWidget. Here it updates the list of items (when * appropriate) as the widget is shown. */ virtual void showEvent(TQShowEvent *e); virtual void paintEvent(TQPaintEvent *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: TQValueList<PlaylistObserver *> m_observers; PlaylistItemList m_siblings; PlaylistList m_playlists; bool m_dirty; bool m_synchronizePlaying; }; #endif