dom/xml/XMLStylesheetProcessingInstruction.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_dom_XMLStylesheetProcessingInstruction_h
   8 #define mozilla_dom_XMLStylesheetProcessingInstruction_h
   9
  10 #include "mozilla/Attributes.h"
  11 #include "mozilla/Unused.h"
  12 #include "mozilla/dom/LinkStyle.h"
  13 #include "mozilla/dom/ProcessingInstruction.h"
  14 #include "nsIURI.h"
  15
  16 namespace mozilla::dom {
  17
  18 class XMLStylesheetProcessingInstruction final : public ProcessingInstruction,
  19                                                  public LinkStyle {
  20  public:
  21   XMLStylesheetProcessingInstruction(
  22       already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
  23       const nsAString& aData)
  24       : ProcessingInstruction(std::move(aNodeInfo), aData) {}
  25
  26   XMLStylesheetProcessingInstruction(nsNodeInfoManager* aNodeInfoManager,
  27                                      const nsAString& aData)
  28       : ProcessingInstruction(
  29             aNodeInfoManager->GetNodeInfo(
  30                 nsGkAtoms::processingInstructionTagName, nullptr,
  31                 kNameSpaceID_None, PROCESSING_INSTRUCTION_NODE,
  32                 nsGkAtoms::xml_stylesheet),
  33             aData) {}
  34
  35   // CC
  36   NS_DECL_ISUPPORTS_INHERITED
  37   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(XMLStylesheetProcessingInstruction,
  38                                            ProcessingInstruction)
  39
  40   // nsINode
  41   virtual void SetNodeValueInternal(const nsAString& aNodeValue,
  42                                     mozilla::ErrorResult& aError) override;
  43
  44   // nsIContent
  45   virtual nsresult BindToTree(BindContext&, nsINode& aParent) override;
  46   virtual void UnbindFromTree(bool aNullParent = true) override;
  47
  48   /**
  49    * Tells this processing instruction to use a different base URI. This is used
  50    * for proper loading of xml-stylesheet processing instructions in XUL
  51    * overlays and is only currently used by nsXMLStylesheetPI.
  52    *
  53    * @param aNewBaseURI the new base URI, nullptr to use the default base URI.
  54    */
  55   void OverrideBaseURI(nsIURI* aNewBaseURI);
  56
  57   // LinkStyle
  58   void GetCharset(nsAString& aCharset) override;
  59
  60   virtual void SetData(const nsAString& aData,
  61                        mozilla::ErrorResult& rv) override {
  62     CharacterData::SetData(aData, rv);
  63     if (rv.Failed()) {
  64       return;
  65     }
  66     Unused << UpdateStyleSheetInternal(nullptr, nullptr, ForceUpdate::Yes);
  67   }
  68
  69  protected:
  70   virtual ~XMLStylesheetProcessingInstruction();
  71
  72   nsCOMPtr<nsIURI> mOverriddenBaseURI;
  73
  74   nsIContent& AsContent() final { return *this; }
  75   const LinkStyle* AsLinkStyle() const final { return this; }
  76   Maybe<SheetInfo> GetStyleSheetInfo() final;
  77
  78   already_AddRefed<CharacterData> CloneDataNode(
  79       mozilla::dom::NodeInfo* aNodeInfo, bool aCloneText) const final;
  80 };
  81
  82 }  // namespace mozilla::dom
  83
  84 #endif  // mozilla_dom_XMLStylesheetProcessingInstruction_h