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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_TREENODEVISITOR_H
+#define AKREGATOR_TREENODEVISITOR_H
+
+namespace Akregator
+{
+
+class TreeNode;
+class Folder;
+class Feed;
+class TagNode;
+class TagFolder;
+
+class TreeNodeVisitor
+{
+ public:
+ virtual bool visit(TreeNode* node);
+ virtual bool visitTreeNode(TreeNode* /*node*/) { return false; }
+ virtual bool visitFolder(Folder* /*node*/) { return false; }
+ virtual bool visitTagFolder(TagFolder* /*node*/) { return false; }
+ virtual bool visitFeed(Feed* /*node*/) { return false; }
+ virtual bool visitTagNode(TagNode* /*node*/) { return false; }
+};
+
+}
+
+#endif