1 files changed, 84 insertions, 0 deletions
diff --git a/dom/xml/XMLStylesheetProcessingInstruction.h b/dom/xml/XMLStylesheetProcessingInstruction.h
new file mode 100644
index 0000000000..a6b3aa6978
--- /dev/null
+++ b/dom/xml/XMLStylesheetProcessingInstruction.h
@@ -0,0 +1,84 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_XMLStylesheetProcessingInstruction_h
+#define mozilla_dom_XMLStylesheetProcessingInstruction_h
+
+#include "mozilla/Attributes.h"
+#include "mozilla/Unused.h"
+#include "mozilla/dom/LinkStyle.h"
+#include "mozilla/dom/ProcessingInstruction.h"
+#include "nsIURI.h"
+
+namespace mozilla::dom {
+
+class XMLStylesheetProcessingInstruction final : public ProcessingInstruction,
+                                                 public LinkStyle {
+ public:
+  XMLStylesheetProcessingInstruction(
+      already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
+      const nsAString& aData)
+      : ProcessingInstruction(std::move(aNodeInfo), aData) {}
+
+  XMLStylesheetProcessingInstruction(nsNodeInfoManager* aNodeInfoManager,
+                                     const nsAString& aData)
+      : ProcessingInstruction(
+            aNodeInfoManager->GetNodeInfo(
+                nsGkAtoms::processingInstructionTagName, nullptr,
+                kNameSpaceID_None, PROCESSING_INSTRUCTION_NODE,
+                nsGkAtoms::xml_stylesheet),
+            aData) {}
+
+  // CC
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(XMLStylesheetProcessingInstruction,
+                                           ProcessingInstruction)
+
+  // nsINode
+  virtual void SetNodeValueInternal(const nsAString& aNodeValue,
+                                    mozilla::ErrorResult& aError) override;
+
+  // nsIContent
+  virtual nsresult BindToTree(BindContext&, nsINode& aParent) override;
+  virtual void UnbindFromTree(bool aNullParent = true) override;
+
+  /**
+   * Tells this processing instruction to use a different base URI. This is used
+   * for proper loading of xml-stylesheet processing instructions in XUL
+   * overlays and is only currently used by nsXMLStylesheetPI.
+   *
+   * @param aNewBaseURI the new base URI, nullptr to use the default base URI.
+   */
+  void OverrideBaseURI(nsIURI* aNewBaseURI);
+
+  // LinkStyle
+  void GetCharset(nsAString& aCharset) override;
+
+  virtual void SetData(const nsAString& aData,
+                       mozilla::ErrorResult& rv) override {
+    CharacterData::SetData(aData, rv);
+    if (rv.Failed()) {
+      return;
+    }
+    Unused << UpdateStyleSheetInternal(nullptr, nullptr, ForceUpdate::Yes);
+  }
+
+ protected:
+  virtual ~XMLStylesheetProcessingInstruction();
+
+  nsCOMPtr<nsIURI> mOverriddenBaseURI;
+
+  nsIContent& AsContent() final { return *this; }
+  const LinkStyle* AsLinkStyle() const final { return this; }
+  Maybe<SheetInfo> GetStyleSheetInfo() final;
+
+  already_AddRefed<CharacterData> CloneDataNode(
+      mozilla::dom::NodeInfo* aNodeInfo, bool aCloneText) const final;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_XMLStylesheetProcessingInstruction_h