Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim:set ts=2 sw=2 sts=2 et cindent: */
       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_CSSPseudoElement_h
       8             : #define mozilla_dom_CSSPseudoElement_h
       9             : 
      10             : #include "js/TypeDecls.h"
      11             : #include "mozilla/Attributes.h"
      12             : #include "mozilla/ErrorResult.h"
      13             : #include "mozilla/dom/BindingDeclarations.h"
      14             : #include "mozilla/dom/Element.h"
      15             : #include "mozilla/RefPtr.h"
      16             : #include "nsCSSPseudoElements.h"
      17             : #include "nsWrapperCache.h"
      18             : 
      19             : namespace mozilla {
      20             : namespace dom {
      21             : 
      22             : class Animation;
      23             : class Element;
      24             : class UnrestrictedDoubleOrKeyframeAnimationOptions;
      25             : 
      26             : class CSSPseudoElement final : public nsWrapperCache
      27             : {
      28             : public:
      29           0 :   NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(CSSPseudoElement)
      30           0 :   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(CSSPseudoElement)
      31             : 
      32             : protected:
      33             :   virtual ~CSSPseudoElement();
      34             : 
      35             : public:
      36             :   ParentObject GetParentObject() const;
      37             : 
      38             :   virtual JSObject* WrapObject(JSContext* aCx,
      39             :                                JS::Handle<JSObject*> aGivenProto) override;
      40             : 
      41           0 :   CSSPseudoElementType GetType() const { return mPseudoType; }
      42           0 :   void GetType(nsString& aRetVal) const
      43             :   {
      44           0 :     MOZ_ASSERT(nsCSSPseudoElements::GetPseudoAtom(mPseudoType),
      45             :                "All pseudo-types allowed by this class should have a"
      46             :                " corresponding atom");
      47             :     // Our atoms use one colon and we would like to return two colons syntax
      48             :     // for the returned pseudo type string, so serialize this to the
      49             :     // non-deprecated two colon syntax.
      50           0 :     aRetVal.Assign(char16_t(':'));
      51           0 :     aRetVal.Append(
      52           0 :       nsDependentAtomString(nsCSSPseudoElements::GetPseudoAtom(mPseudoType)));
      53           0 :   }
      54           0 :   already_AddRefed<Element> ParentElement() const
      55             :   {
      56           0 :     RefPtr<Element> retVal(mParentElement);
      57           0 :     return retVal.forget();
      58             :   }
      59             : 
      60             :   void GetAnimations(const AnimationFilter& filter,
      61             :                      nsTArray<RefPtr<Animation>>& aRetVal);
      62             :   already_AddRefed<Animation>
      63             :     Animate(JSContext* aContext,
      64             :             JS::Handle<JSObject*> aKeyframes,
      65             :             const UnrestrictedDoubleOrKeyframeAnimationOptions& aOptions,
      66             :             ErrorResult& aError);
      67             : 
      68             :   // Given an element:pseudoType pair, returns the CSSPseudoElement stored as a
      69             :   // property on |aElement|. If there is no CSSPseudoElement for the specified
      70             :   // pseudo-type on element, a new CSSPseudoElement will be created and stored
      71             :   // on the element.
      72             :   static already_AddRefed<CSSPseudoElement>
      73             :     GetCSSPseudoElement(Element* aElement, CSSPseudoElementType aType);
      74             : 
      75             : private:
      76             :   // Only ::before and ::after are supported.
      77             :   CSSPseudoElement(Element* aElement, CSSPseudoElementType aType);
      78             : 
      79             :   static nsIAtom* GetCSSPseudoElementPropertyAtom(CSSPseudoElementType aType);
      80             : 
      81             :   // mParentElement needs to be an owning reference since if script is holding
      82             :   // on to the pseudo-element, it needs to continue to be able to refer to
      83             :   // the parent element.
      84             :   RefPtr<Element> mParentElement;
      85             :   CSSPseudoElementType mPseudoType;
      86             : };
      87             : 
      88             : } // namespace dom
      89             : } // namespace mozilla
      90             : 
      91             : #endif // mozilla_dom_CSSPseudoElement_h