akregator/src
treenodevisitor.h
00001 /* 00002 This file is part of Akregator. 00003 00004 Copyright (C) 2005 Frank Osterfeld <frank.osterfeld at kdemail.net> 00005 00006 This program is free software; you can redistribute it and/or modify 00007 it under the terms of the GNU General Public License as published by 00008 the Free Software Foundation; either version 2 of the License, or 00009 (at your option) any later version. 00010 00011 This program is distributed in the hope that it will be useful, 00012 but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 GNU General Public License for more details. 00015 00016 You should have received a copy of the GNU General Public License 00017 along with this program; if not, write to the Free Software 00018 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 00019 00020 As a special exception, permission is given to link this program 00021 with any edition of Qt, and distribute the resulting executable, 00022 without including the source code for Qt in the source distribution. 00023 */ 00024 #ifndef AKREGATOR_TREENODEVISITOR_H 00025 #define AKREGATOR_TREENODEVISITOR_H 00026 00027 namespace Akregator 00028 { 00029 00030 class TreeNode; 00031 class Folder; 00032 class Feed; 00033 class TagNode; 00034 class TagFolder; 00035 00036 class TreeNodeVisitor 00037 { 00038 public: 00039 virtual bool visit(TreeNode* node); 00040 virtual bool visitTreeNode(TreeNode* /*node*/) { return false; } 00041 virtual bool visitFolder(Folder* /*node*/) { return false; } 00042 virtual bool visitTagFolder(TagFolder* /*node*/) { return false; } 00043 virtual bool visitFeed(Feed* /*node*/) { return false; } 00044 virtual bool visitTagNode(TagNode* /*node*/) { return false; } 00045 }; 00046 00047 } 00048 00049 #endif