1 /* 2 * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org) 3 * Copyright (C) 2000 Frederik Holljen (frederik.holljen (at) hig.no) 4 * Copyright (C) 2001 Peter Kelly (pmk (at) post.com) 5 * Copyright (C) 2006 Samuel Weinig (sam.weinig (at) gmail.com) 6 * Copyright (C) 2004, 2008, 2009 Apple Inc. All rights reserved. 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Library General Public 10 * License as published by the Free Software Foundation; either 11 * version 2 of the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Library General Public License for more details. 17 * 18 * You should have received a copy of the GNU Library General Public License 19 * along with this library; see the file COPYING.LIB. If not, write to 20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 21 * Boston, MA 02110-1301, USA. 22 * 23 */ 24 25 #ifndef NodeFilter_h 26 #define NodeFilter_h 27 28 #include "DOMWrapperWorld.h" 29 #include "NodeFilterCondition.h" 30 #include <wtf/RefPtr.h> 31 32 namespace WebCore { 33 34 class NodeFilter : public RefCounted<NodeFilter> { 35 public: 36 /** 37 * The following constants are returned by the acceptNode() 38 * method: 39 */ 40 enum { 41 FILTER_ACCEPT = 1, 42 FILTER_REJECT = 2, 43 FILTER_SKIP = 3 44 }; 45 46 /** 47 * These are the available values for the whatToShow parameter. 48 * They are the same as the set of possible types for Node, and 49 * their values are derived by using a bit position corresponding 50 * to the value of NodeType for the equivalent node type. 51 */ 52 enum { 53 SHOW_ALL = 0xFFFFFFFF, 54 SHOW_ELEMENT = 0x00000001, 55 SHOW_ATTRIBUTE = 0x00000002, 56 SHOW_TEXT = 0x00000004, 57 SHOW_CDATA_SECTION = 0x00000008, 58 SHOW_ENTITY_REFERENCE = 0x00000010, 59 SHOW_ENTITY = 0x00000020, 60 SHOW_PROCESSING_INSTRUCTION = 0x00000040, 61 SHOW_COMMENT = 0x00000080, 62 SHOW_DOCUMENT = 0x00000100, 63 SHOW_DOCUMENT_TYPE = 0x00000200, 64 SHOW_DOCUMENT_FRAGMENT = 0x00000400, 65 SHOW_NOTATION = 0x00000800 66 }; 67 68 static PassRefPtr<NodeFilter> create(PassRefPtr<NodeFilterCondition> condition) 69 { 70 return adoptRef(new NodeFilter(condition)); 71 } 72 73 static PassRefPtr<NodeFilter> create() 74 { 75 return adoptRef(new NodeFilter()); 76 } 77 78 short acceptNode(ScriptState*, Node*) const; 79 80 // Do not call these functions. They are just scaffolding to support the Objective-C bindings. 81 // They operate in the main thread normal world, and they swallow JS exceptions. 82 short acceptNode(Node* node) const { return acceptNode(scriptStateFromNode(mainThreadNormalWorld(), node), node); } 83 84 void setCondition(PassRefPtr<NodeFilterCondition> condition) { ASSERT(!m_condition); m_condition = condition; } 85 86 private: 87 NodeFilter(PassRefPtr<NodeFilterCondition> condition) : m_condition(condition) { } 88 NodeFilter() {} 89 90 RefPtr<NodeFilterCondition> m_condition; 91 }; 92 93 } // namespace WebCore 94 95 #endif // NodeFilter_h 96
