gecko-dev/layout/inspector/ServoStyleRuleMap.h

68 строки
1.8 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
#ifndef mozilla_ServoStyleRuleMap_h
#define mozilla_ServoStyleRuleMap_h
#include "mozilla/ServoStyleRule.h"
#include "nsDataHashtable.h"
struct RawServoStyleRule;
class nsXBLPrototypeResources;
namespace mozilla {
class ServoCSSRuleList;
class ServoStyleSet;
namespace css {
class Rule;
} // namespace css
namespace dom {
class ShadowRoot;
}
class ServoStyleRuleMap
{
public:
ServoStyleRuleMap() = default;
void EnsureTable(ServoStyleSet&);
void EnsureTable(nsXBLPrototypeResources&);
void EnsureTable(dom::ShadowRoot&);
ServoStyleRule* Lookup(const RawServoStyleRule* aRawRule) const
{
return mTable.Get(aRawRule);
}
void SheetAdded(ServoStyleSheet&);
void SheetRemoved(ServoStyleSheet&);
void RuleAdded(ServoStyleSheet& aStyleSheet, css::Rule&);
void RuleRemoved(ServoStyleSheet& aStyleSheet, css::Rule&);
size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const;
~ServoStyleRuleMap() = default;
private:
// Since we would never have a document which contains no style rule,
// we use IsEmpty as an indication whether we need to walk through
// all stylesheets to fill the table.
bool IsEmpty() const { return mTable.Count() == 0; }
void FillTableFromRule(css::Rule& aRule);
void FillTableFromRuleList(ServoCSSRuleList& aRuleList);
void FillTableFromStyleSheet(ServoStyleSheet& aSheet);
typedef nsDataHashtable<nsPtrHashKey<const RawServoStyleRule>,
WeakPtr<ServoStyleRule>> Hashtable;
Hashtable mTable;
};
} // namespace mozilla
#endif // mozilla_ServoStyleRuleMap_h