/* * Copyright (C) 1999 Lars Knoll (knoll@kde.org) * Copyright (C) 2000 Frederik Holljen (frederik.holljen@hig.no) * Copyright (C) 2001 Peter Kelly (pmk@post.com) * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com) * Copyright (C) 2004, 2008, 2009, 2015 Apple Inc. All rights reserved. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public License * along with this library; see the file COPYING.LIB. If not, write to * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301, USA. * */ #pragma once #include "CallbackResult.h" #include <wtf/RefCounted.h> namespace WebCore { class Node; class NodeFilter : public RefCounted<NodeFilter> { public: virtual ~NodeFilter() { } virtual CallbackResult<unsigned short> acceptNode(Node&) = 0; /* * The following constants are returned by the acceptNode() * method: */ enum { FILTER_ACCEPT = 1, FILTER_REJECT = 2, FILTER_SKIP = 3 }; /* * These are the available values for the whatToShow parameter. * They are the same as the set of possible types for Node, and * their values are derived by using a bit position corresponding * to the value of NodeType for the equivalent node type. */ enum : unsigned long { SHOW_ALL = 0xFFFFFFFF, SHOW_ELEMENT = 0x00000001, SHOW_ATTRIBUTE = 0x00000002, SHOW_TEXT = 0x00000004, SHOW_CDATA_SECTION = 0x00000008, SHOW_ENTITY_REFERENCE = 0x00000010, SHOW_ENTITY = 0x00000020, SHOW_PROCESSING_INSTRUCTION = 0x00000040, SHOW_COMMENT = 0x00000080, SHOW_DOCUMENT = 0x00000100, SHOW_DOCUMENT_TYPE = 0x00000200, SHOW_DOCUMENT_FRAGMENT = 0x00000400, SHOW_NOTATION = 0x00000800 }; }; } // namespace WebCore