/* -*- 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/. */

/*

 * internal interface representing CSS style rules that contain other

 * rules, such as @media rules

 */

#ifndef mozilla_css_GroupRule_h__

#define mozilla_css_GroupRule_h__

#include "mozilla/Attributes.h"

#include "mozilla/ErrorResult.h"

#include "mozilla/MemoryReporting.h"

#include "mozilla/ServoCSSRuleList.h"

#include "mozilla/css/Rule.h"

#include "nsCycleCollectionParticipant.h"

namespace mozilla {

class StyleSheet;

namespace dom {

class CSSRuleList;

} // namespace dom

namespace css {

// inherits from Rule so it can be shared between

// MediaRule and DocumentRule

class GroupRule : public Rule

{

protected:

  GroupRule(already_AddRefed<ServoCssRules> aRules,

            StyleSheet* aSheet,

            Rule* aParentRule,

            uint32_t aLineNumber,

            uint32_t aColumnNumber);

  GroupRule(const GroupRule& aCopy) = delete;

  virtual ~GroupRule();

public:

  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(GroupRule, Rule)

  NS_DECL_ISUPPORTS_INHERITED

  virtual bool IsCCLeaf() const override;

#ifdef DEBUG

  void List(FILE* out = stdout, int32_t aIndent = 0) const override;

#endif

  void DropSheetReference() override;

public:

  int32_t StyleRuleCount() const { return mRuleList->Length(); }

  Rule* GetStyleRuleAt(int32_t aIndex) const {

    return mRuleList->GetRule(aIndex);

  }

  /*

   * The next method should never be called unless you have first called

   * WillDirty() on the parent stylesheet.

   */

  nsresult DeleteStyleRuleAt(uint32_t aIndex) {

    return mRuleList->DeleteRule(aIndex);

  }

  // non-virtual -- it is only called by subclasses

  size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;

  virtual size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const override = 0;

  // WebIDL API

  dom::CSSRuleList* CssRules() { return mRuleList; }

  uint32_t InsertRule(const nsAString& aRule, uint32_t aIndex,

                      ErrorResult& aRv);

  void DeleteRule(uint32_t aIndex, ErrorResult& aRv);

private:

  RefPtr<ServoCSSRuleList> mRuleList;

};

// Implementation of WebIDL CSSConditionRule.

class ConditionRule : public GroupRule

{

protected:

  using GroupRule::GroupRule;

public:

  virtual void GetConditionText(nsAString& aConditionText) = 0;

  virtual void SetConditionText(const nsAString& aConditionText,

                                ErrorResult& aRv) = 0;

};

} // namespace css

} // namespace mozilla

#endif /* mozilla_css_GroupRule_h__ */