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/* -*- 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/. */
#include "mozilla/ServoStyleRuleMap.h"
#include "mozilla/css/GroupRule.h"
#include "mozilla/dom/CSSImportRule.h"
#include "mozilla/dom/CSSRuleBinding.h"
#include "mozilla/dom/CSSStyleRule.h"
#include "mozilla/dom/CSSNestedDeclarations.h"
#include "mozilla/dom/Document.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/ShadowRoot.h"
#include "mozilla/IntegerRange.h"
#include "mozilla/ServoStyleSet.h"
#include "mozilla/StyleSheetInlines.h"
using namespace mozilla::dom;
namespace mozilla {
void ServoStyleRuleMap::EnsureTable(ServoStyleSet& aStyleSet) {
if (!IsEmpty()) {
return;
}
aStyleSet.EnumerateStyleSheets(
[&](StyleSheet& aSheet) { FillTableFromStyleSheet(aSheet); });
}
void ServoStyleRuleMap::EnsureTable(ShadowRoot& aShadowRoot) {
if (!IsEmpty()) {
return;
}
for (auto index : IntegerRange(aShadowRoot.SheetCount())) {
FillTableFromStyleSheet(*aShadowRoot.SheetAt(index));
}
for (const auto& sheet : aShadowRoot.AdoptedStyleSheets()) {
FillTableFromStyleSheet(*sheet);
}
}
void ServoStyleRuleMap::SheetAdded(StyleSheet& aStyleSheet) {
if (!IsEmpty()) {
FillTableFromStyleSheet(aStyleSheet);
}
}
void ServoStyleRuleMap::SheetCloned(StyleSheet& aStyleSheet) {
// Invalidate all data inside. We could probably track down all the individual
// rules that changed etc, but it doesn't seem worth it.
//
// TODO: We can't do this until GetCssRulesInternal stops cloning.
// mTable.Clear();
}
void ServoStyleRuleMap::SheetRemoved(StyleSheet& aStyleSheet) {
// Invalidate all data inside. This isn't strictly necessary since
// we should always get update from document before new queries come.
// But it is probably still safer if we try to avoid having invalid
// pointers inside. Also if the document keep adding and removing
// stylesheets, this would also prevent us from infinitely growing
// memory usage.
mTable.Clear();
}
void ServoStyleRuleMap::RuleAdded(StyleSheet& aStyleSheet,
css::Rule& aStyleRule) {
if (!IsEmpty()) {
FillTableFromRule(aStyleRule);
}
}
void ServoStyleRuleMap::RuleRemoved(StyleSheet& aStyleSheet,
css::Rule& aStyleRule) {
if (IsEmpty()) {
return;
}
switch (aStyleRule.Type()) {
case StyleCssRuleType::Style:
case StyleCssRuleType::NestedDeclarations:
case StyleCssRuleType::Import:
case StyleCssRuleType::Media:
case StyleCssRuleType::Supports:
case StyleCssRuleType::LayerBlock:
case StyleCssRuleType::Container:
case StyleCssRuleType::Document:
case StyleCssRuleType::Scope:
case StyleCssRuleType::StartingStyle:
case StyleCssRuleType::PositionTry: {
// See the comment in SheetRemoved.
mTable.Clear();
break;
}
case StyleCssRuleType::LayerStatement:
case StyleCssRuleType::FontFace:
case StyleCssRuleType::Page:
case StyleCssRuleType::Property:
case StyleCssRuleType::Keyframes:
case StyleCssRuleType::Keyframe:
case StyleCssRuleType::Margin:
case StyleCssRuleType::Namespace:
case StyleCssRuleType::CounterStyle:
case StyleCssRuleType::FontFeatureValues:
case StyleCssRuleType::FontPaletteValues:
break;
}
}
size_t ServoStyleRuleMap::SizeOfIncludingThis(
MallocSizeOf aMallocSizeOf) const {
size_t n = aMallocSizeOf(this);
n += mTable.ShallowSizeOfExcludingThis(aMallocSizeOf);
return n;
}
void ServoStyleRuleMap::RuleDeclarationsChanged(
css::Rule& aRule, const StyleLockedDeclarationBlock* aOld,
const StyleLockedDeclarationBlock* aNew) {
MOZ_ASSERT(aOld);
MOZ_ASSERT(aNew);
if (IsEmpty()) {
return;
}
auto old = mTable.Extract(aOld);
MOZ_ASSERT(old.valueOr(nullptr) == &aRule,
"We were tracking the wrong rule?");
mTable.InsertOrUpdate(aNew, &aRule);
}
void ServoStyleRuleMap::FillTableFromRule(css::Rule& aRule) {
switch (aRule.Type()) {
case StyleCssRuleType::NestedDeclarations: {
auto& rule = static_cast<CSSNestedDeclarations&>(aRule);
mTable.InsertOrUpdate(rule.RawStyle(), &rule);
break;
}
case StyleCssRuleType::Style: {
auto& rule = static_cast<CSSStyleRule&>(aRule);
mTable.InsertOrUpdate(rule.RawStyle(), &rule);
[[fallthrough]];
}
case StyleCssRuleType::LayerBlock:
case StyleCssRuleType::Media:
case StyleCssRuleType::Supports:
case StyleCssRuleType::Container:
case StyleCssRuleType::Document:
case StyleCssRuleType::Scope:
case StyleCssRuleType::StartingStyle: {
auto& rule = static_cast<css::GroupRule&>(aRule);
FillTableFromRuleList(*rule.CssRules());
break;
}
case StyleCssRuleType::Import: {
auto& rule = static_cast<CSSImportRule&>(aRule);
if (auto* sheet = rule.GetStyleSheet()) {
FillTableFromStyleSheet(*sheet);
}
break;
}
case StyleCssRuleType::LayerStatement:
case StyleCssRuleType::FontFace:
case StyleCssRuleType::Page:
case StyleCssRuleType::Property:
case StyleCssRuleType::Keyframes:
case StyleCssRuleType::Keyframe:
case StyleCssRuleType::Margin:
case StyleCssRuleType::Namespace:
case StyleCssRuleType::CounterStyle:
case StyleCssRuleType::FontFeatureValues:
case StyleCssRuleType::FontPaletteValues:
case StyleCssRuleType::PositionTry:
break;
}
}
void ServoStyleRuleMap::FillTableFromRuleList(ServoCSSRuleList& aRuleList) {
for (uint32_t i : IntegerRange(aRuleList.Length())) {
FillTableFromRule(*aRuleList.GetRule(i));
}
}
void ServoStyleRuleMap::FillTableFromStyleSheet(StyleSheet& aSheet) {
if (aSheet.IsComplete()) {
FillTableFromRuleList(*aSheet.GetCssRulesInternal());
}
}
} // namespace mozilla
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