Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #ifndef mozilla_BindingStyleRule_h__
       7             : #define mozilla_BindingStyleRule_h__
       8             : 
       9             : #include "nscore.h"
      10             : #include "nsStringGlue.h"
      11             : #include "mozilla/css/Rule.h"
      12             : 
      13             : /**
      14             :  * Shared superclass for mozilla::css::StyleRule and mozilla::ServoStyleRule,
      15             :  * for use from bindings code.
      16             :  */
      17             : 
      18             : class nsICSSDeclaration;
      19             : 
      20             : namespace mozilla {
      21             : namespace dom {
      22             : class Element;
      23             : }
      24             : 
      25             : class BindingStyleRule : public css::Rule
      26             : {
      27             : protected:
      28        2933 :   BindingStyleRule(uint32_t aLineNumber, uint32_t aColumnNumber)
      29        2933 :     : css::Rule(aLineNumber, aColumnNumber)
      30             :   {
      31        2933 :   }
      32           0 :   BindingStyleRule(const BindingStyleRule& aCopy)
      33           0 :     : css::Rule(aCopy)
      34             :   {
      35           0 :   }
      36          16 :   virtual ~BindingStyleRule() {}
      37             : 
      38             : public:
      39             :   // This is pure virtual because we have no members, and are an abstract class
      40             :   // to start with.  The fact that we have to have this declaration at all is
      41             :   // kinda dumb.  :(
      42             :   virtual size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf)
      43             :     const override MOZ_MUST_OVERRIDE = 0;
      44             : 
      45             :   // Likewise for this one.  We have to override our superclass, but don't
      46             :   // really need to do anything in this method.
      47             :   virtual bool IsCCLeaf() const override MOZ_MUST_OVERRIDE = 0;
      48             : 
      49             :   virtual uint32_t GetSelectorCount() = 0;
      50             :   virtual nsresult GetSelectorText(uint32_t aSelectorIndex, nsAString& aText) = 0;
      51             :   virtual nsresult GetSpecificity(uint32_t aSelectorIndex,
      52             :                                   uint64_t* aSpecificity) = 0;
      53             :   virtual nsresult SelectorMatchesElement(dom::Element* aElement,
      54             :                                           uint32_t aSelectorIndex,
      55             :                                           const nsAString& aPseudo,
      56             :                                           bool* aMatches) = 0;
      57             : 
      58             :   // WebIDL API
      59             :   // For GetSelectorText/SetSelectorText, we purposefully use a signature that
      60             :   // matches the nsIDOMCSSStyleRule one for now, so subclasses can just
      61             :   // implement both at once.  The actual implementations must never return
      62             :   // anything other than NS_OK;
      63             :   NS_IMETHOD GetSelectorText(nsAString& aSelectorText) = 0;
      64             :   NS_IMETHOD SetSelectorText(const nsAString& aSelectorText) = 0;
      65             :   virtual nsICSSDeclaration* Style() = 0;
      66             : 
      67             :   virtual JSObject* WrapObject(JSContext* aCx,
      68             :                                JS::Handle<JSObject*> aGivenProto) override;
      69             : };
      70             : 
      71             : } // namespace mozilla
      72             : 
      73             : #endif // mozilla_BindingStyleRule_h__