tor-browser

The Tor Browser
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StylePropertyMapReadOnly.h (3165B)

      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 LAYOUT_STYLE_TYPEDOM_STYLEPROPERTYMAPREADONLY_H_
      8 #define LAYOUT_STYLE_TYPEDOM_STYLEPROPERTYMAPREADONLY_H_
      9 
     10 #include <stdint.h>
     11 
     12 #include "js/TypeDecls.h"
     13 #include "mozilla/MemoryReporting.h"
     14 #include "mozilla/dom/CSSStyleValueBindingFwd.h"
     15 #include "nsCOMPtr.h"
     16 #include "nsISupports.h"
     17 #include "nsISupportsImpl.h"
     18 #include "nsStringFwd.h"
     19 #include "nsTArrayForwardDeclare.h"
     20 #include "nsWrapperCache.h"
     21 
     22 template <class T>
     23 class RefPtr;
     24 
     25 namespace mozilla {
     26 
     27 class ErrorResult;
     28 struct StylePropertyTypedValueResult;
     29 
     30 namespace dom {
     31 
     32 class CSSStyleRule;
     33 class Element;
     34 class OwningUndefinedOrCSSStyleValue;
     35 
     36 class StylePropertyMapReadOnly : public nsISupports, public nsWrapperCache {
     37 public:
     38  StylePropertyMapReadOnly(Element* aElement, bool aComputed);
     39  explicit StylePropertyMapReadOnly(CSSStyleRule* aRule);
     40 
     41  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
     42  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(StylePropertyMapReadOnly)
     43 
     44  nsISupports* GetParentObject() const;
     45 
     46  JSObject* WrapObject(JSContext*, JS::Handle<JSObject*> aGivenProto) override;
     47 
     48  // start of StylePropertyMapReadOnly Web IDL declarations
     49 
     50  // https://drafts.css-houdini.org/css-typed-om-1/#dom-stylepropertymapreadonly-get
     51  void Get(const nsACString& aProperty, OwningUndefinedOrCSSStyleValue& aRetVal,
     52           ErrorResult& aRv) const;
     53 
     54  // https://drafts.css-houdini.org/css-typed-om-1/#dom-stylepropertymapreadonly-getall
     55  void GetAll(const nsACString& aProperty,
     56              nsTArray<RefPtr<CSSStyleValue>>& aRetVal, ErrorResult& aRv) const;
     57 
     58  bool Has(const nsACString& aProperty, ErrorResult& aRv) const;
     59 
     60  uint32_t Size() const;
     61 
     62  uint32_t GetIterableLength() const;
     63 
     64  const nsACString& GetKeyAtIndex(uint32_t aIndex) const;
     65 
     66  nsTArray<RefPtr<CSSStyleValue>> GetValueAtIndex(uint32_t aIndex) const;
     67 
     68  // end of StylePropertyMapReadOnly Web IDL declarations
     69 
     70  size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const;
     71 
     72  size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const;
     73 
     74 protected:
     75  virtual ~StylePropertyMapReadOnly() = default;
     76 
     77  class Declarations {
     78   public:
     79    enum class Kind : uint8_t {
     80      Inline,
     81      Computed,
     82      Rule,
     83    };
     84    Declarations(Element* aElement, bool aComputed)
     85        : mElement(aElement),
     86          mKind(aComputed ? Kind::Computed : Kind::Inline) {}
     87 
     88    explicit Declarations(CSSStyleRule* aRule)
     89        : mRule(aRule), mKind(Kind::Rule) {}
     90 
     91    StylePropertyTypedValueResult Get(const nsACString& aProperty,
     92                                      ErrorResult& aRv) const;
     93 
     94    void Unlink();
     95 
     96   private:
     97    union {
     98      Element* mElement;
     99      CSSStyleRule* mRule;
    100    };
    101    const Kind mKind;
    102  };
    103 
    104  nsCOMPtr<nsISupports> mParent;
    105  Declarations mDeclarations;
    106 };
    107 
    108 }  // namespace dom
    109 }  // namespace mozilla
    110 
    111 #endif  // LAYOUT_STYLE_TYPEDOM_STYLEPROPERTYMAPREADONLY_H_