зеркало из https://github.com/mozilla/gecko-dev.git
72 строки
2.3 KiB
C++
72 строки
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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#ifndef mozilla_ServoStyleRuleMap_h
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#define mozilla_ServoStyleRuleMap_h
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#include "mozilla/ServoStyleRule.h"
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#include "nsDataHashtable.h"
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#include "nsICSSLoaderObserver.h"
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#include "nsStubDocumentObserver.h"
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struct RawServoStyleRule;
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namespace mozilla {
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class ServoCSSRuleList;
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class ServoStyleSet;
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namespace css {
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class Rule;
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} // namespace css
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class ServoStyleRuleMap final : public nsStubDocumentObserver
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, public nsICSSLoaderObserver
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{
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public:
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NS_DECL_ISUPPORTS
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explicit ServoStyleRuleMap(ServoStyleSet* aStyleSet);
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void EnsureTable();
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ServoStyleRule* Lookup(const RawServoStyleRule* aRawRule) const {
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return mTable.Get(aRawRule);
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}
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// nsIDocumentObserver methods
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void StyleSheetAdded(StyleSheet* aStyleSheet, bool aDocumentSheet) final;
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void StyleSheetRemoved(StyleSheet* aStyleSheet, bool aDocumentSheet) final;
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void StyleSheetApplicableStateChanged(StyleSheet* aStyleSheet) final;
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void StyleRuleAdded(StyleSheet* aStyleSheet, css::Rule* aStyleRule) final;
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void StyleRuleRemoved(StyleSheet* aStyleSheet, css::Rule* aStyleRule) final;
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// nsICSSLoaderObserver
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NS_IMETHOD StyleSheetLoaded(StyleSheet* aSheet,
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bool aWasAlternate, nsresult aStatus) final;
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size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const;
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private:
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~ServoStyleRuleMap();
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// Since we would never have a document which contains no style rule,
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// we use IsEmpty as an indication whether we need to walk through
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// all stylesheets to fill the table.
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bool IsEmpty() const { return mTable.Count() == 0; }
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void FillTableFromRule(css::Rule* aRule);
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void FillTableFromRuleList(ServoCSSRuleList* aRuleList);
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void FillTableFromStyleSheet(ServoStyleSheet* aSheet);
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typedef nsDataHashtable<nsPtrHashKey<const RawServoStyleRule>,
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WeakPtr<ServoStyleRule>> Hashtable;
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Hashtable mTable;
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ServoStyleSet* mStyleSet;
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};
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} // namespace mozilla
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#endif // mozilla_ServoStyleRuleMap_h
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