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 {
  16 namespace dom {
  17
  18 class HTMLStyleElement final : public nsGenericHTMLElement,
  19                                public LinkStyle,
  20                                public nsStubMutationObserver {
  21  public:
  22   explicit HTMLStyleElement(
  23       already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
  24
  25   // nsISupports
  26   NS_DECL_ISUPPORTS_INHERITED
  27
  28   // CC
  29   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLStyleElement,
  30                                            nsGenericHTMLElement)
  31
  32   void GetInnerHTML(nsAString& aInnerHTML, OOMReporter& aError) override;
  33   using nsGenericHTMLElement::SetInnerHTML;
  34   virtual void SetInnerHTML(const nsAString& aInnerHTML,
  35                             nsIPrincipal* aSubjectPrincipal,
  36                             mozilla::ErrorResult& aError) override;
  37   virtual void SetTextContentInternal(const nsAString& aTextContent,
  38                                       nsIPrincipal* aSubjectPrincipal,
  39                                       mozilla::ErrorResult& aError) override;
  40   /**
  41    * Mark this style element with a devtools-specific principal that
  42    * skips Content Security Policy unsafe-inline checks. This triggering
  43    * principal will be overwritten by any callers that set textContent
  44    * or innerHTML on this element.
  45    */
  46   void SetDevtoolsAsTriggeringPrincipal();
  47
  48   virtual nsresult BindToTree(BindContext&, nsINode& aParent) override;
  49   virtual void UnbindFromTree(bool aNullParent = true) override;
  50   virtual nsresult AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
  51                                 const nsAttrValue* aValue,
  52                                 const nsAttrValue* aOldValue,
  53                                 nsIPrincipal* aSubjectPrincipal,
  54                                 bool aNotify) override;
  55
  56   virtual nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
  57
  58   // nsIMutationObserver
  59   NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
  60   NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
  61   NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
  62   NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
  63
  64   bool Disabled() const;
  65   void SetDisabled(bool aDisabled);
  66   void GetMedia(nsAString& aValue) { GetHTMLAttr(nsGkAtoms::media, aValue); }
  67   void SetMedia(const nsAString& aMedia, ErrorResult& aError) {
  68     SetHTMLAttr(nsGkAtoms::media, aMedia, aError);
  69   }
  70   void GetType(nsAString& aValue) { GetHTMLAttr(nsGkAtoms::type, aValue); }
  71   void SetType(const nsAString& aType, ErrorResult& aError) {
  72     SetHTMLAttr(nsGkAtoms::type, aType, aError);
  73   }
  74
  75   virtual JSObject* WrapNode(JSContext* aCx,
  76                              JS::Handle<JSObject*> aGivenProto) override;
  77
  78  protected:
  79   virtual ~HTMLStyleElement();
  80
  81   nsIContent& AsContent() final { return *this; }
  82   const LinkStyle* AsLinkStyle() const final { return this; }
  83   Maybe<SheetInfo> GetStyleSheetInfo() final;
  84
  85   /**
  86    * Common method to call from the various mutation observer methods.
  87    * aContent is a content node that's either the one that changed or its
  88    * parent; we should only respond to the change if aContent is non-anonymous.
  89    */
  90   void ContentChanged(nsIContent* aContent);
  91 };
  92
  93 }  // namespace dom
  94 }  // namespace mozilla
  95
  96 #endif