layout/style/nsDOMCSSAttrDeclaration.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 /* DOM object for element.style */
   8
   9 #ifndef nsDOMCSSAttributeDeclaration_h
  10 #define nsDOMCSSAttributeDeclaration_h
  11
  12 #include "mozilla/Attributes.h"
  13 #include "mozilla/dom/DocGroup.h"
  14 #include "mozilla/ServoTypes.h"
  15 #include "nsDOMCSSDeclaration.h"
  16
  17 struct RawServoUnlockedDeclarationBlock;
  18
  19 namespace mozilla {
  20
  21 class SMILValue;
  22 class SVGAnimatedLength;
  23 class SVGAnimatedPathSegList;
  24
  25 namespace dom {
  26 class DomGroup;
  27 class Element;
  28 }  // namespace dom
  29 }  // namespace mozilla
  30
  31 class nsDOMCSSAttributeDeclaration final : public nsDOMCSSDeclaration {
  32  public:
  33   typedef mozilla::dom::Element Element;
  34   typedef mozilla::SMILValue SMILValue;
  35   typedef mozilla::SVGAnimatedLength SVGAnimatedLength;
  36   nsDOMCSSAttributeDeclaration(Element* aContent, bool aIsSMILOverride);
  37
  38   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  39   NS_DECL_CYCLE_COLLECTION_SKIPPABLE_WRAPPERCACHE_CLASS_AMBIGUOUS(
  40       nsDOMCSSAttributeDeclaration, nsICSSDeclaration)
  41
  42   mozilla::DeclarationBlock* GetOrCreateCSSDeclaration(
  43       Operation aOperation, mozilla::DeclarationBlock** aCreated) final;
  44
  45   nsDOMCSSDeclaration::ParsingEnvironment GetParsingEnvironment(
  46       nsIPrincipal* aSubjectPrincipal) const final;
  47
  48   mozilla::css::Rule* GetParentRule() override { return nullptr; }
  49
  50   nsINode* GetAssociatedNode() const override { return mElement; }
  51   nsINode* GetParentObject() const override { return mElement; }
  52
  53   nsresult SetSMILValue(const nsCSSPropertyID aPropID, const SMILValue& aValue);
  54   nsresult SetSMILValue(const nsCSSPropertyID aPropID,
  55                         const SVGAnimatedLength& aLength);
  56   nsresult SetSMILValue(const nsCSSPropertyID,
  57                         const mozilla::SVGAnimatedPathSegList& aPath);
  58   void ClearSMILValue(const nsCSSPropertyID aPropID) {
  59     // Put empty string in override style for our property
  60     SetPropertyValue(aPropID, ""_ns, nullptr, mozilla::IgnoreErrors());
  61   }
  62
  63   void SetPropertyValue(const nsCSSPropertyID aPropID, const nsACString& aValue,
  64                         nsIPrincipal* aSubjectPrincipal,
  65                         mozilla::ErrorResult& aRv) override;
  66
  67   static void MutationClosureFunction(void* aData, nsCSSPropertyID);
  68
  69   void GetPropertyChangeClosure(
  70       mozilla::DeclarationBlockMutationClosure* aClosure,
  71       mozilla::MutationClosureData* aClosureData) final {
  72     if (!mIsSMILOverride) {
  73       aClosure->function = MutationClosureFunction;
  74       aClosure->data = aClosureData;
  75       aClosureData->mShouldBeCalled = true;
  76       aClosureData->mElement = mElement;
  77     }
  78   }
  79
  80  protected:
  81   ~nsDOMCSSAttributeDeclaration();
  82
  83   nsresult SetCSSDeclaration(
  84       mozilla::DeclarationBlock* aDecl,
  85       mozilla::MutationClosureData* aClosureData) override;
  86   mozilla::dom::Document* DocToUpdate() override;
  87
  88   RefPtr<Element> mElement;
  89
  90   /* If true, this indicates that this nsDOMCSSAttributeDeclaration
  91    * should interact with mContent's SMIL override style rule (rather
  92    * than the inline style rule).
  93    */
  94   const bool mIsSMILOverride;
  95
  96  private:
  97   template <typename SetterFunc>
  98   nsresult SetSMILValueHelper(SetterFunc aFunc);
  99 };
 100
 101 #endif /* nsDOMCSSAttributeDeclaration_h */