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/* -*- 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/MemoryReporting.h"
#include "mozilla/ServoCSSRuleList.h"
#include "mozilla/css/Rule.h"
#include "nsCycleCollectionParticipant.h"
namespace mozilla {
class ErrorResult;
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<StyleLockedCssRules> 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 ? mRuleList->Length() : 0; }
Rule* GetStyleRuleAt(int32_t aIndex) const {
return mRuleList ? mRuleList->GetRule(aIndex) : nullptr;
}
void SetRawAfterClone(RefPtr<StyleLockedCssRules> aRules) {
if (mRuleList) {
mRuleList->SetRawAfterClone(std::move(aRules));
} else {
MOZ_ASSERT(!aRules, "Can't move from having no rules to having rules");
}
}
/*
* The next method should never be called unless you have first called
* WillDirty() on the parent stylesheet.
*/
nsresult DeleteStyleRuleAt(uint32_t aIndex) {
if (!mRuleList) {
return NS_OK;
}
return mRuleList->DeleteRule(aIndex);
}
// non-virtual -- it is only called by subclasses
size_t SizeOfExcludingThis(MallocSizeOf) const;
size_t SizeOfIncludingThis(MallocSizeOf) const override = 0;
// WebIDL API
ServoCSSRuleList* GetCssRules() { return mRuleList; }
uint32_t InsertRule(const nsACString& 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(nsACString& aConditionText) = 0;
};
} // namespace css
} // namespace mozilla
#endif /* mozilla_css_GroupRule_h__ */
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