1 files changed, 94 insertions, 0 deletions
diff --git a/dom/html/HTMLStyleElement.h b/dom/html/HTMLStyleElement.h
new file mode 100644
index 0000000000..f12d6e0cae
--- /dev/null
+++ b/dom/html/HTMLStyleElement.h
@@ -0,0 +1,94 @@
+/* -*- 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_HTMLStyleElement_h
+#define mozilla_dom_HTMLStyleElement_h
+
+#include "mozilla/Attributes.h"
+#include "mozilla/dom/LinkStyle.h"
+#include "nsGenericHTMLElement.h"
+#include "nsStubMutationObserver.h"
+
+namespace mozilla::dom {
+
+class HTMLStyleElement final : public nsGenericHTMLElement,
+                               public LinkStyle,
+                               public nsStubMutationObserver {
+ public:
+  explicit HTMLStyleElement(
+      already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
+
+  // nsISupports
+  NS_DECL_ISUPPORTS_INHERITED
+
+  // CC
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLStyleElement,
+                                           nsGenericHTMLElement)
+
+  void GetInnerHTML(nsAString& aInnerHTML, OOMReporter& aError) override;
+  using nsGenericHTMLElement::SetInnerHTML;
+  virtual void SetInnerHTML(const nsAString& aInnerHTML,
+                            nsIPrincipal* aSubjectPrincipal,
+                            mozilla::ErrorResult& aError) override;
+  virtual void SetTextContentInternal(const nsAString& aTextContent,
+                                      nsIPrincipal* aSubjectPrincipal,
+                                      mozilla::ErrorResult& aError) override;
+  /**
+   * Mark this style element with a devtools-specific principal that
+   * skips Content Security Policy unsafe-inline checks. This triggering
+   * principal will be overwritten by any callers that set textContent
+   * or innerHTML on this element.
+   */
+  void SetDevtoolsAsTriggeringPrincipal();
+
+  virtual nsresult BindToTree(BindContext&, nsINode& aParent) override;
+  virtual void UnbindFromTree(bool aNullParent = true) override;
+  virtual void AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
+                            const nsAttrValue* aValue,
+                            const nsAttrValue* aOldValue,
+                            nsIPrincipal* aSubjectPrincipal,
+                            bool aNotify) override;
+
+  virtual nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
+
+  // nsIMutationObserver
+  NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
+  NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
+  NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
+  NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
+
+  bool Disabled() const;
+  void SetDisabled(bool aDisabled);
+  void GetMedia(nsAString& aValue) { GetHTMLAttr(nsGkAtoms::media, aValue); }
+  void SetMedia(const nsAString& aMedia, ErrorResult& aError) {
+    SetHTMLAttr(nsGkAtoms::media, aMedia, aError);
+  }
+  void GetType(nsAString& aValue) { GetHTMLAttr(nsGkAtoms::type, aValue); }
+  void SetType(const nsAString& aType, ErrorResult& aError) {
+    SetHTMLAttr(nsGkAtoms::type, aType, aError);
+  }
+
+  virtual JSObject* WrapNode(JSContext* aCx,
+                             JS::Handle<JSObject*> aGivenProto) override;
+
+ protected:
+  virtual ~HTMLStyleElement();
+
+  nsIContent& AsContent() final { return *this; }
+  const LinkStyle* AsLinkStyle() const final { return this; }
+  Maybe<SheetInfo> GetStyleSheetInfo() final;
+
+  /**
+   * Common method to call from the various mutation observer methods.
+   * aContent is a content node that's either the one that changed or its
+   * parent; we should only respond to the change if aContent is non-anonymous.
+   */
+  void ContentChanged(nsIContent* aContent);
+};
+
+}  // namespace mozilla::dom
+
+#endif