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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/IncrementalClearCOMRuleArray.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/css/Rule.h"
#include "nsCycleCollectionParticipant.h"
class nsPresContext;
class nsMediaQueryResultCacheKey;
namespace mozilla {
class CSSStyleSheet;
namespace css {
class GroupRuleRuleList;
// inherits from Rule so it can be shared between
// MediaRule and DocumentRule
class GroupRule : public Rule
{
protected:
GroupRule(uint32_t aLineNumber, uint32_t aColumnNumber);
GroupRule(const GroupRule& aCopy);
virtual ~GroupRule();
public:
NS_DECL_CYCLE_COLLECTION_CLASS(GroupRule)
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
// implement part of Rule
DECL_STYLE_RULE_INHERIT_NO_DOMRULE
#ifdef DEBUG
virtual void List(FILE* out = stdout, int32_t aIndent = 0) const override;
#endif
virtual void SetStyleSheet(CSSStyleSheet* aSheet) override;
public:
void AppendStyleRule(Rule* aRule);
int32_t StyleRuleCount() const { return mRules.Count(); }
Rule* GetStyleRuleAt(int32_t aIndex) const;
typedef IncrementalClearCOMRuleArray::nsCOMArrayEnumFunc RuleEnumFunc;
bool EnumerateRulesForwards(RuleEnumFunc aFunc, void * aData) const;
/*
* The next three methods should never be called unless you have first
* called WillDirty() on the parent stylesheet. After they are
* called, DidDirty() needs to be called on the sheet.
*/
nsresult DeleteStyleRuleAt(uint32_t aIndex);
nsresult InsertStyleRuleAt(uint32_t aIndex, Rule* aRule);
virtual bool UseForPresentation(nsPresContext* aPresContext,
nsMediaQueryResultCacheKey& aKey) = 0;
// 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;
static bool
CloneRuleInto(Rule* aRule, void* aArray)
{
RefPtr<Rule> clone = aRule->Clone();
static_cast<IncrementalClearCOMRuleArray*>(aArray)->AppendObject(clone);
return true;
}
protected:
// to help implement nsIDOMCSSRule
void AppendRulesToCssText(nsAString& aCssText);
// to implement common methods on nsIDOMCSSMediaRule and
// nsIDOMCSSMozDocumentRule
nsresult GetCssRules(nsIDOMCSSRuleList* *aRuleList);
nsresult InsertRule(const nsAString & aRule, uint32_t aIndex,
uint32_t* _retval);
nsresult DeleteRule(uint32_t aIndex);
IncrementalClearCOMRuleArray mRules;
RefPtr<GroupRuleRuleList> mRuleCollection; // lazily constructed
};
} // namespace css
} // namespace mozilla
#endif /* mozilla_css_GroupRule_h__ */
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