HTMLStyleElement.h

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/* -*- 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"

class nsDOMTokenList;

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(UnbindContext&) override;

  bool ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,

                      const nsAString& aValue,

                      nsIPrincipal* aMaybeScriptedPrincipal,

                      nsAttrValue& aResult) 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);

  nsDOMTokenList* Blocking();

  bool IsPotentiallyRenderBlocking() override;

  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);

  RefPtr<nsDOMTokenList> mBlocking;

};

}  // namespace mozilla::dom

#endif