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

1 files changed, 110 insertions, 0 deletions

diff --git a/juk/dynamicplaylist.h b/juk/dynamicplaylist.h
new file mode 100644
index 00000000..3e6e2c4b
--- /dev/null
+++ b/juk/dynamicplaylist.h
@@ -0,0 +1,110 @@
+/***************************************************************************
+    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