gecko-dev/layout/style/GroupRule.h

91 строка
2.7 KiB
C++

/* -*- 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/css/Rule.h"
#include "nsCOMArray.h"
#include "nsAutoPtr.h"
class nsPresContext;
class nsMediaQueryResultCacheKey;
namespace mozilla {
namespace css {
class GroupRuleRuleList;
// inherits from Rule so it can be shared between
// MediaRule and DocumentRule
class GroupRule : public Rule
{
protected:
GroupRule();
GroupRule(const GroupRule& aCopy);
virtual ~GroupRule();
public:
// implement part of nsIStyleRule and Rule
DECL_STYLE_RULE_INHERIT_NO_DOMRULE
virtual void SetStyleSheet(nsCSSStyleSheet* aSheet);
// to help implement nsIStyleRule
#ifdef DEBUG
virtual void List(FILE* out = stdout, PRInt32 aIndent = 0) const;
#endif
public:
void AppendStyleRule(Rule* aRule);
PRInt32 StyleRuleCount() const { return mRules.Count(); }
Rule* GetStyleRuleAt(PRInt32 aIndex) const;
typedef nsCOMArray<Rule>::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(PRUint32 aIndex);
nsresult InsertStyleRulesAt(PRUint32 aIndex,
nsCOMArray<Rule>& aRules);
nsresult ReplaceStyleRule(Rule *aOld, Rule *aNew);
virtual bool UseForPresentation(nsPresContext* aPresContext,
nsMediaQueryResultCacheKey& aKey) = 0;
NS_MUST_OVERRIDE size_t // non-virtual -- it is only called by subclasses
SizeOfExcludingThis(nsMallocSizeOfFun aMallocSizeOf) const;
virtual size_t
SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf) const = 0;
protected:
// to help implement nsIDOMCSSRule
nsresult AppendRulesToCssText(nsAString& aCssText);
// to implement common methods on nsIDOMCSSMediaRule and
// nsIDOMCSSMozDocumentRule
nsresult GetCssRules(nsIDOMCSSRuleList* *aRuleList);
nsresult InsertRule(const nsAString & aRule, PRUint32 aIndex,
PRUint32* _retval);
nsresult DeleteRule(PRUint32 aIndex);
nsCOMArray<Rule> mRules;
nsRefPtr<GroupRuleRuleList> mRuleCollection; // lazily constructed
};
} // namespace css
} // namespace mozilla
#endif /* mozilla_css_GroupRule_h__ */