dom/html/HTMLStyleElement.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_HTMLStyleElement_h
   8 #define mozilla_dom_HTMLStyleElement_h
   9
  10 #include "mozilla/Attributes.h"
  11 #include "mozilla/dom/LinkStyle.h"
  12 #include "nsGenericHTMLElement.h"
  13 #include "nsStubMutationObserver.h"
  14
  15 namespace mozilla::dom {
  16
  17 class HTMLStyleElement final : public nsGenericHTMLElement,
  18                                public LinkStyle,
  19                                public nsStubMutationObserver {
  20  public:
  21   explicit HTMLStyleElement(
  22       already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
  23
  24   // nsISupports
  25   NS_DECL_ISUPPORTS_INHERITED
  26
  27   // CC
  28   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLStyleElement,
  29                                            nsGenericHTMLElement)
  30
  31   void GetInnerHTML(nsAString& aInnerHTML, OOMReporter& aError) override;
  32   using nsGenericHTMLElement::SetInnerHTML;
  33   virtual void SetInnerHTML(const nsAString& aInnerHTML,
  34                             nsIPrincipal* aSubjectPrincipal,
  35                             mozilla::ErrorResult& aError) override;
  36   virtual void SetTextContentInternal(const nsAString& aTextContent,
  37                                       nsIPrincipal* aSubjectPrincipal,
  38                                       mozilla::ErrorResult& aError) override;
  39   /**
  40    * Mark this style element with a devtools-specific principal that
  41    * skips Content Security Policy unsafe-inline checks. This triggering
  42    * principal will be overwritten by any callers that set textContent
  43    * or innerHTML on this element.
  44    */
  45   void SetDevtoolsAsTriggeringPrincipal();
  46
  47   virtual nsresult BindToTree(BindContext&, nsINode& aParent) override;
  48   virtual void UnbindFromTree(bool aNullParent = true) override;
  49   virtual void AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
  50                             const nsAttrValue* aValue,
  51                             const nsAttrValue* aOldValue,
  52                             nsIPrincipal* aSubjectPrincipal,
  53                             bool aNotify) override;
  54
  55   virtual nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
  56
  57   // nsIMutationObserver
  58   NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
  59   NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
  60   NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
  61   NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
  62
  63   bool Disabled() const;
  64   void SetDisabled(bool aDisabled);
  65   void GetMedia(nsAString& aValue) { GetHTMLAttr(nsGkAtoms::media, aValue); }
  66   void SetMedia(const nsAString& aMedia, ErrorResult& aError) {
  67     SetHTMLAttr(nsGkAtoms::media, aMedia, aError);
  68   }
  69   void GetType(nsAString& aValue) { GetHTMLAttr(nsGkAtoms::type, aValue); }
  70   void SetType(const nsAString& aType, ErrorResult& aError) {
  71     SetHTMLAttr(nsGkAtoms::type, aType, aError);
  72   }
  73
  74   virtual JSObject* WrapNode(JSContext* aCx,
  75                              JS::Handle<JSObject*> aGivenProto) override;
  76
  77  protected:
  78   virtual ~HTMLStyleElement();
  79
  80   nsIContent& AsContent() final { return *this; }
  81   const LinkStyle* AsLinkStyle() const final { return this; }
  82   Maybe<SheetInfo> GetStyleSheetInfo() final;
  83
  84   /**
  85    * Common method to call from the various mutation observer methods.
  86    * aContent is a content node that's either the one that changed or its
  87    * parent; we should only respond to the change if aContent is non-anonymous.
  88    */
  89   void ContentChanged(nsIContent* aContent);
  90 };
  91
  92 }  // namespace mozilla::dom
  93
  94 #endif