third_party/WebKit/Source/core/dom/ProcessingInstruction.h

   1 /*
   2  * Copyright (C) 2000 Peter Kelly (pmk@post.com)
   3  * Copyright (C) 2006 Apple Inc. All rights reserved.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Library General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Library General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Library General Public License
  16  * along with this library; see the file COPYING.LIB.  If not, write to
  17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  18  * Boston, MA 02110-1301, USA.
  19  *
  20  */
  21
  22 #ifndef ProcessingInstruction_h
  23 #define ProcessingInstruction_h
  24
  25 #include "core/dom/CharacterData.h"
  26 #include "core/fetch/ResourceOwner.h"
  27 #include "core/fetch/StyleSheetResource.h"
  28 #include "core/fetch/StyleSheetResourceClient.h"
  29
  30 namespace blink {
  31
  32 class StyleSheet;
  33 class CSSStyleSheet;
  34 class EventListener;
  35
  36 class ProcessingInstruction final : public CharacterData, private ResourceOwner<StyleSheetResource> {
  37     DEFINE_WRAPPERTYPEINFO();
  38 public:
  39     static PassRefPtrWillBeRawPtr<ProcessingInstruction> create(Document&, const String& target, const String& data);
  40     ~ProcessingInstruction() override;
  41     DECLARE_VIRTUAL_TRACE();
  42
  43     const String& target() const { return m_target; }
  44
  45     void setCreatedByParser(bool createdByParser) { m_createdByParser = createdByParser; }
  46
  47     const String& localHref() const { return m_localHref; }
  48     StyleSheet* sheet() const { return m_sheet.get(); }
  49
  50     bool isCSS() const { return m_isCSS; }
  51     bool isXSL() const { return m_isXSL; }
  52
  53     void didAttributeChanged();
  54     bool isLoading() const;
  55
  56     // For XSLT
  57     class DetachableEventListener : public WillBeGarbageCollectedMixin {
  58     public:
  59         virtual ~DetachableEventListener() { }
  60         virtual EventListener* toEventListener() = 0;
  61         // Detach event listener from its processing instruction.
  62         virtual void detach() = 0;
  63
  64         DEFINE_INLINE_VIRTUAL_TRACE() { }
  65
  66 #if !ENABLE(OILPAN)
  67         void ref() { refDetachableEventListener(); }
  68         void deref() { derefDetachableEventListener(); }
  69
  70     private:
  71         virtual void refDetachableEventListener() = 0;
  72         virtual void derefDetachableEventListener() = 0;
  73 #endif
  74     };
  75
  76     void setEventListenerForXSLT(PassRefPtrWillBeRawPtr<DetachableEventListener> listener) { m_listenerForXSLT = listener; }
  77     EventListener* eventListenerForXSLT();
  78     void clearEventListenerForXSLT();
  79
  80 private:
  81     ProcessingInstruction(Document&, const String& target, const String& data);
  82
  83     String nodeName() const override;
  84     NodeType nodeType() const override;
  85     PassRefPtrWillBeRawPtr<Node> cloneNode(bool deep = true) override;
  86
  87     InsertionNotificationRequest insertedInto(ContainerNode*) override;
  88     void removedFrom(ContainerNode*) override;
  89
  90     bool checkStyleSheet(String& href, String& charset);
  91     void process(const String& href, const String& charset);
  92
  93     void setCSSStyleSheet(const String& href, const KURL& baseURL, const String& charset, const CSSStyleSheetResource*) override;
  94     void setXSLStyleSheet(const String& href, const KURL& baseURL, const String& sheet) override;
  95
  96     bool sheetLoaded() override;
  97
  98     void parseStyleSheet(const String& sheet);
  99     void clearSheet();
 100
 101     String m_target;
 102     String m_localHref;
 103     String m_title;
 104     String m_media;
 105     RefPtrWillBeMember<StyleSheet> m_sheet;
 106     bool m_loading;
 107     bool m_alternate;
 108     bool m_createdByParser;
 109     bool m_isCSS;
 110     bool m_isXSL;
 111
 112     RefPtrWillBeMember<DetachableEventListener> m_listenerForXSLT;
 113 };
 114
 115 DEFINE_NODE_TYPE_CASTS(ProcessingInstruction, nodeType() == Node::PROCESSING_INSTRUCTION_NODE);
 116
 117 inline bool isXSLStyleSheet(const Node& node)
 118 {
 119     return node.nodeType() == Node::PROCESSING_INSTRUCTION_NODE && toProcessingInstruction(node).isXSL();
 120 }
 121
 122 } // namespace blink
 123
 124 #endif // ProcessingInstruction_h