1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
7 #ifndef mozilla_ServoStyleRuleMap_h
8 #define mozilla_ServoStyleRuleMap_h
10 #include "mozilla/dom/CSSStyleRule.h"
11 #include "mozilla/StyleSheet.h"
13 #include "nsTHashMap.h"
15 struct StyleLockedStyleRule
;
18 class ServoCSSRuleList
;
26 class ServoStyleRuleMap
{
28 ServoStyleRuleMap() = default;
30 void EnsureTable(ServoStyleSet
&);
31 void EnsureTable(dom::ShadowRoot
&);
33 dom::CSSStyleRule
* Lookup(const StyleLockedStyleRule
* aRawRule
) const {
34 return mTable
.Get(aRawRule
);
37 void SheetAdded(StyleSheet
&);
38 void SheetRemoved(StyleSheet
&);
39 void SheetCloned(StyleSheet
&);
41 void RuleAdded(StyleSheet
& aStyleSheet
, css::Rule
&);
42 void RuleRemoved(StyleSheet
& aStyleSheet
, css::Rule
&);
44 size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf
) const;
46 ~ServoStyleRuleMap() = default;
49 // Since we would never have a document which contains no style rule,
50 // we use IsEmpty as an indication whether we need to walk through
51 // all stylesheets to fill the table.
52 bool IsEmpty() const { return mTable
.Count() == 0; }
54 void FillTableFromRule(css::Rule
&);
55 void FillTableFromRuleList(ServoCSSRuleList
&);
56 void FillTableFromStyleSheet(StyleSheet
&);
58 using Hashtable
= nsTHashMap
<nsPtrHashKey
<const StyleLockedStyleRule
>,
59 WeakPtr
<dom::CSSStyleRule
>>;
63 } // namespace mozilla
65 #endif // mozilla_ServoStyleRuleMap_h