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+/*
+ This file is part of Akregator.
+
+ Copyright (C) 2005 Frank Osterfeld <frank.osterfeld at kdemail.net>
+
+ 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.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+ As a special exception, permission is given to link this program
+ with any edition of Qt, and distribute the resulting executable,
+ without including the source code for Qt in the source distribution.
+*/
+
+#ifndef AKREGATOR_NODELIST_H
+#define AKREGATOR_NODELIST_H
+
+#include <qobject.h>
+
+class QDomDocument;
+class QDomNode;
+class QString;
+
+template <class K,class T> class QMap;
+template <class T> class QValueList;
+
+// hack for KDE 3.x series
+#ifdef signals
+# undef signals
+# define signals public
+#endif
+
+namespace Akregator {
+
+class Folder;
+class TreeNode;
+
+class NodeList : public QObject
+{
+
+Q_OBJECT
+
+public:
+ NodeList(QObject *parent=0, const char *name=0);
+ virtual ~NodeList();
+
+ virtual Folder* rootNode() const;
+
+ virtual bool readFromXML(const QDomDocument& doc) = 0;
+
+ virtual QDomDocument toXML() const = 0;
+
+ virtual bool isEmpty() const;
+
+ TreeNode* findByID(int id) const;
+
+ /** returns the title of the feed list (as used in the OPML document) */
+ const QString& title() const;
+
+ /** sets the title of the feed list */
+ void setTitle(const QString& name);
+
+ /** returns a flat list containing all nodes in the tree */
+ const QValueList<TreeNode*>& asFlatList() const;
+
+signals:
+ void signalDestroyed(NodeList*);
+ /** emitted when a node was added to the list */
+ void signalNodeAdded(TreeNode*);
+ /** emitted when a node was removed from the list */
+ void signalNodeRemoved(TreeNode*);
+
+public slots:
+
+ /**
+ * Clears the list without touching the root node.
+ */
+ void clear();
+
+public: // compat with KDE-3.x assertions, remove for KDE 4
+// protected:
+
+ QValueList<TreeNode*>* flatList() const;
+ QMap<int, TreeNode*>* idMap() const;
+
+ int generateID();
+ void setRootNode(Folder* folder);
+ virtual void addNode(TreeNode* node, bool preserveID);
+ virtual void removeNode(TreeNode* node);
+
+public slots: // compat with KDE-3.x assertions, remove for KDE 4
+// protected slots:
+
+ virtual void slotNodeDestroyed(TreeNode* node);
+ virtual void slotNodeAdded(TreeNode* node);
+ virtual void slotNodeRemoved(Folder* parent, TreeNode* node);
+
+public: // compat with KDE-3.x assertions, remove for KDE 4
+// private:
+ NodeList(const NodeList&) : QObject() {}
+ NodeList& operator=(const NodeList&) { return *this; }
+
+ friend class AddNodeVisitor;
+ class AddNodeVisitor;
+
+ friend class RemoveNodeVisitor;
+ class RemoveNodeVisitor;
+
+ class NodeListPrivate;
+ NodeListPrivate* d;
+
+};
+
+} // namespace Akregator
+
+#endif // AKREGATOR_NODELIST_H