зеркало из https://github.com/mozilla/gecko-dev.git
130 строки
3.9 KiB
C++
130 строки
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* internal interface representing CSS style rules that contain other
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* rules, such as @media rules
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*/
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#ifndef mozilla_css_GroupRule_h__
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#define mozilla_css_GroupRule_h__
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#include "mozilla/Attributes.h"
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#include "mozilla/ErrorResult.h"
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#include "mozilla/IncrementalClearCOMRuleArray.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/css/Rule.h"
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#include "nsCycleCollectionParticipant.h"
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class nsPresContext;
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class nsMediaQueryResultCacheKey;
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namespace mozilla {
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class StyleSheet;
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namespace dom {
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class CSSRuleList;
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} // namespace dom
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namespace css {
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class GroupRuleRuleList;
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// inherits from Rule so it can be shared between
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// MediaRule and DocumentRule
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class GroupRule : public Rule
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{
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protected:
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GroupRule(uint32_t aLineNumber, uint32_t aColumnNumber);
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GroupRule(const GroupRule& aCopy);
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virtual ~GroupRule();
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public:
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(GroupRule, Rule)
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NS_DECL_ISUPPORTS_INHERITED
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virtual bool IsCCLeaf() const override;
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#ifdef DEBUG
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virtual void List(FILE* out = stdout, int32_t aIndent = 0) const override;
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#endif
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virtual void SetStyleSheet(StyleSheet* aSheet) override;
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public:
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void AppendStyleRule(Rule* aRule);
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int32_t StyleRuleCount() const { return mRules.Count(); }
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Rule* GetStyleRuleAt(int32_t aIndex) const;
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typedef IncrementalClearCOMRuleArray::nsCOMArrayEnumFunc RuleEnumFunc;
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bool EnumerateRulesForwards(RuleEnumFunc aFunc, void * aData) const;
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/*
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* The next three methods should never be called unless you have first
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* called WillDirty() on the parent stylesheet. After they are
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* called, DidDirty() needs to be called on the sheet.
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*/
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nsresult DeleteStyleRuleAt(uint32_t aIndex);
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nsresult InsertStyleRuleAt(uint32_t aIndex, Rule* aRule);
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virtual bool UseForPresentation(nsPresContext* aPresContext,
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nsMediaQueryResultCacheKey& aKey) = 0;
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// non-virtual -- it is only called by subclasses
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size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
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virtual size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const override = 0;
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static bool
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CloneRuleInto(Rule* aRule, void* aArray)
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{
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RefPtr<Rule> clone = aRule->Clone();
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static_cast<IncrementalClearCOMRuleArray*>(aArray)->AppendObject(clone);
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return true;
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}
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// WebIDL API
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dom::CSSRuleList* CssRules();
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uint32_t InsertRule(const nsAString& aRule, uint32_t aIndex,
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ErrorResult& aRv);
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void DeleteRule(uint32_t aIndex, ErrorResult& aRv);
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protected:
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// to help implement nsIDOMCSSRule
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void AppendRulesToCssText(nsAString& aCssText) const;
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// to implement common methods on nsIDOMCSSMediaRule and
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// nsIDOMCSSMozDocumentRule
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nsresult GetCssRules(nsIDOMCSSRuleList* *aRuleList);
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nsresult InsertRule(const nsAString & aRule, uint32_t aIndex,
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uint32_t* _retval);
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nsresult DeleteRule(uint32_t aIndex);
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IncrementalClearCOMRuleArray mRules;
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RefPtr<GroupRuleRuleList> mRuleCollection; // lazily constructed
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};
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// Implementation of WebIDL CSSConditionRule.
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class ConditionRule : public GroupRule
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{
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protected:
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ConditionRule(uint32_t aLineNumber, uint32_t aColumnNumber);
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ConditionRule(const ConditionRule& aCopy);
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virtual ~ConditionRule();
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public:
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// GetConditionText signature matches nsIDOMCSSConditionRule, so subclasses
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// can implement this easily. The implementations should never return
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// anything other than NS_OK.
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NS_IMETHOD GetConditionText(nsAString& aConditionText) = 0;
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virtual void SetConditionText(const nsAString& aConditionText,
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ErrorResult& aRv) = 0;
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};
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} // namespace css
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} // namespace mozilla
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#endif /* mozilla_css_GroupRule_h__ */
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