1 /* 2 * This file is part of the XSL implementation. 3 * 4 * Copyright (C) 2004, 2006, 2008, 2012 Apple Inc. All rights reserved. 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Library General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Library General Public License for more details. 15 * 16 * You should have received a copy of the GNU Library General Public License 17 * along with this library; see the file COPYING.LIB. If not, write to 18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA. 20 * 21 */ 22 23 #ifndef XSLStyleSheet_h 24 #define XSLStyleSheet_h 25 26 #include "core/css/StyleSheet.h" 27 #include "core/dom/ProcessingInstruction.h" 28 #include "platform/RuntimeEnabledFeatures.h" 29 #include "wtf/PassRefPtr.h" 30 #include <libxml/tree.h> 31 #include <libxslt/transform.h> 32 33 namespace blink { 34 35 class ResourceFetcher; 36 class XSLImportRule; 37 38 class XSLStyleSheet FINAL : public StyleSheet { 39 public: 40 static PassRefPtrWillBeRawPtr<XSLStyleSheet> create(XSLImportRule* parentImport, const String& originalURL, const KURL& finalURL) 41 { 42 ASSERT(RuntimeEnabledFeatures::xsltEnabled()); 43 return adoptRefWillBeNoop(new XSLStyleSheet(parentImport, originalURL, finalURL)); 44 } 45 static PassRefPtrWillBeRawPtr<XSLStyleSheet> create(ProcessingInstruction* parentNode, const String& originalURL, const KURL& finalURL) 46 { 47 ASSERT(RuntimeEnabledFeatures::xsltEnabled()); 48 return adoptRefWillBeNoop(new XSLStyleSheet(parentNode, originalURL, finalURL, false)); 49 } 50 static PassRefPtrWillBeRawPtr<XSLStyleSheet> createEmbedded(ProcessingInstruction* parentNode, const KURL& finalURL) 51 { 52 ASSERT(RuntimeEnabledFeatures::xsltEnabled()); 53 return adoptRefWillBeNoop(new XSLStyleSheet(parentNode, finalURL.string(), finalURL, true)); 54 } 55 56 // Taking an arbitrary node is unsafe, because owner node pointer can become 57 // stale. XSLTProcessor ensures that the stylesheet doesn't outlive its 58 // parent, in part by not exposing it to JavaScript. 59 static PassRefPtrWillBeRawPtr<XSLStyleSheet> createForXSLTProcessor(Document* document, Node* stylesheetRootNode, const String& originalURL, const KURL& finalURL) 60 { 61 ASSERT(RuntimeEnabledFeatures::xsltEnabled()); 62 return adoptRefWillBeNoop(new XSLStyleSheet(document, stylesheetRootNode, originalURL, finalURL, false)); 63 } 64 65 virtual ~XSLStyleSheet(); 66 67 bool parseString(const String&); 68 69 void checkLoaded(); 70 71 const KURL& finalURL() const { return m_finalURL; } 72 73 void loadChildSheets(); 74 void loadChildSheet(const String& href); 75 76 ResourceFetcher* fetcher(); 77 78 Document* ownerDocument(); 79 virtual XSLStyleSheet* parentStyleSheet() const OVERRIDE { return m_parentStyleSheet; } 80 void setParentStyleSheet(XSLStyleSheet*); 81 82 xmlDocPtr document(); 83 xsltStylesheetPtr compileStyleSheet(); 84 xmlDocPtr locateStylesheetSubResource(xmlDocPtr parentDoc, const xmlChar* uri); 85 86 void clearDocuments(); 87 88 void markAsProcessed(); 89 bool processed() const { return m_processed; } 90 91 virtual String type() const OVERRIDE { return "text/xml"; } 92 virtual bool disabled() const OVERRIDE { return m_isDisabled; } 93 virtual void setDisabled(bool b) OVERRIDE { m_isDisabled = b; } 94 virtual Node* ownerNode() const OVERRIDE { return m_ownerNode; } 95 virtual String href() const OVERRIDE { return m_originalURL; } 96 virtual String title() const OVERRIDE { return emptyString(); } 97 98 virtual void clearOwnerNode() OVERRIDE { m_ownerNode = nullptr; } 99 virtual KURL baseURL() const OVERRIDE { return m_finalURL; } 100 virtual bool isLoading() const OVERRIDE; 101 102 virtual void trace(Visitor*) OVERRIDE; 103 104 private: 105 XSLStyleSheet(Node* parentNode, const String& originalURL, const KURL& finalURL, bool embedded); 106 XSLStyleSheet(Document* ownerDocument, Node* styleSheetRootNode, const String& originalURL, const KURL& finalURL, bool embedded); 107 XSLStyleSheet(XSLImportRule* parentImport, const String& originalURL, const KURL& finalURL); 108 109 RawPtrWillBeMember<Node> m_ownerNode; 110 String m_originalURL; 111 KURL m_finalURL; 112 bool m_isDisabled; 113 114 WillBeHeapVector<OwnPtrWillBeMember<XSLImportRule> > m_children; 115 116 bool m_embedded; 117 bool m_processed; 118 119 xmlDocPtr m_stylesheetDoc; 120 bool m_stylesheetDocTaken; 121 bool m_compilationFailed; 122 123 RawPtrWillBeMember<XSLStyleSheet> m_parentStyleSheet; 124 RefPtrWillBeMember<Document> m_ownerDocument; 125 }; 126 127 DEFINE_TYPE_CASTS(XSLStyleSheet, StyleSheet, sheet, !sheet->isCSSStyleSheet(), !sheet.isCSSStyleSheet()); 128 129 } // namespace blink 130 131 #endif // XSLStyleSheet_h 132