forked from mirrors/gecko-dev
8c3ee86d6d
Lazily create the rule list since most style rules won't have child rules. Remaining failures in the cssom tests are tracked in other bugs. Differential Revision: https://phabricator.services.mozilla.com/D180649
65 lines
1.8 KiB
C++
65 lines
1.8 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/dom/CSSStyleRule.h"
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#include "mozilla/StyleSheet.h"
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#include "nsTHashMap.h"
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struct StyleLockedStyleRule;
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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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namespace dom {
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class ShadowRoot;
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}
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class ServoStyleRuleMap {
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public:
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ServoStyleRuleMap() = default;
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void EnsureTable(ServoStyleSet&);
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void EnsureTable(dom::ShadowRoot&);
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dom::CSSStyleRule* Lookup(const StyleLockedStyleRule* aRawRule) const {
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return mTable.Get(aRawRule);
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}
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void SheetAdded(StyleSheet&);
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void SheetRemoved(StyleSheet&);
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void SheetCloned(StyleSheet&);
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void RuleAdded(StyleSheet& aStyleSheet, css::Rule&);
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void RuleRemoved(StyleSheet& aStyleSheet, css::Rule&);
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size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const;
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~ServoStyleRuleMap() = default;
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private:
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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&);
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void FillTableFromRuleList(ServoCSSRuleList&);
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void FillTableFromStyleSheet(StyleSheet&);
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using Hashtable = nsTHashMap<nsPtrHashKey<const StyleLockedStyleRule>,
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WeakPtr<dom::CSSStyleRule>>;
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Hashtable mTable;
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};
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} // namespace mozilla
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#endif // mozilla_ServoStyleRuleMap_h
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