/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_BindingStyleRule_h__

#define mozilla_BindingStyleRule_h__

#include "nscore.h"

#include "nsString.h"

#include "mozilla/css/Rule.h"

#include "mozilla/NotNull.h"

/**

 * Shared superclass for mozilla::css::StyleRule and mozilla::ServoStyleRule,

 * for use from bindings code.

 */

class nsICSSDeclaration;

namespace mozilla {

class DeclarationBlock;

namespace dom {

class Element;

}

class BindingStyleRule : public css::Rule

{

protected:

  BindingStyleRule(StyleSheet* aSheet,

                   css::Rule* aParentRule,

                   uint32_t aLineNumber,

                   uint32_t aColumnNumber)

    : css::Rule(aSheet, aParentRule, aLineNumber, aColumnNumber)

  {

  }

  BindingStyleRule(const BindingStyleRule& aCopy)

    : css::Rule(aCopy)

  {

  }

  virtual ~BindingStyleRule() {}

public:

  // This is pure virtual because we have no members, and are an abstract class

  // to start with.  The fact that we have to have this declaration at all is

  // kinda dumb.  :(

  virtual size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf)

    const override MOZ_MUST_OVERRIDE = 0;

  // Likewise for this one.  We have to override our superclass, but don't

  // really need to do anything in this method.

  virtual bool IsCCLeaf() const override MOZ_MUST_OVERRIDE = 0;

  virtual uint32_t GetSelectorCount() = 0;

  virtual nsresult GetSelectorText(uint32_t aSelectorIndex, nsAString& aText) = 0;

  virtual nsresult GetSpecificity(uint32_t aSelectorIndex,

                                  uint64_t* aSpecificity) = 0;

  virtual nsresult SelectorMatchesElement(dom::Element* aElement,

                                          uint32_t aSelectorIndex,

                                          const nsAString& aPseudo,

                                          bool* aMatches) = 0;

  virtual NotNull<DeclarationBlock*> GetDeclarationBlock() const = 0;

  // WebIDL API

  virtual void GetSelectorText(nsAString& aSelectorText) = 0;

  virtual void SetSelectorText(const nsAString& aSelectorText) = 0;

  virtual nsICSSDeclaration* Style() = 0;

  virtual JSObject* WrapObject(JSContext* aCx,

                               JS::Handle<JSObject*> aGivenProto) override;

};

} // namespace mozilla

#endif // mozilla_BindingStyleRule_h__