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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/dom/CSSStyleRule.h"
#include "mozilla/CSSEnabledState.h"
#include "mozilla/DeclarationBlock.h"
#include "mozilla/PseudoStyleType.h"
#include "mozilla/ServoBindings.h"
#include "mozilla/dom/CSSStyleRuleBinding.h"
#include "nsCSSPseudoElements.h"
#include "mozAutoDocUpdate.h"
using namespace mozilla::dom;
namespace mozilla {
namespace dom {
// -- CSSStyleRuleDeclaration ---------------------------------------
CSSStyleRuleDeclaration::CSSStyleRuleDeclaration(
already_AddRefed<RawServoDeclarationBlock> aDecls)
: mDecls(new DeclarationBlock(std::move(aDecls))) {}
CSSStyleRuleDeclaration::~CSSStyleRuleDeclaration() {
mDecls->SetOwningRule(nullptr);
}
// QueryInterface implementation for CSSStyleRuleDeclaration
NS_INTERFACE_MAP_BEGIN(CSSStyleRuleDeclaration)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
// We forward the cycle collection interfaces to Rule(), which is
// never null (in fact, we're part of that object!)
if (aIID.Equals(NS_GET_IID(nsCycleCollectionISupports)) ||
aIID.Equals(NS_GET_IID(nsXPCOMCycleCollectionParticipant))) {
return Rule()->QueryInterface(aIID, aInstancePtr);
}
NS_INTERFACE_MAP_END_INHERITING(nsDOMCSSDeclaration)
NS_IMPL_ADDREF_USING_AGGREGATOR(CSSStyleRuleDeclaration, Rule())
NS_IMPL_RELEASE_USING_AGGREGATOR(CSSStyleRuleDeclaration, Rule())
/* nsDOMCSSDeclaration implementation */
css::Rule* CSSStyleRuleDeclaration::GetParentRule() { return Rule(); }
nsINode* CSSStyleRuleDeclaration::GetParentObject() {
return Rule()->GetParentObject();
}
DeclarationBlock* CSSStyleRuleDeclaration::GetOrCreateCSSDeclaration(
Operation aOperation, DeclarationBlock** aCreated) {
return mDecls;
}
nsresult CSSStyleRuleDeclaration::SetCSSDeclaration(
DeclarationBlock* aDecl, MutationClosureData* aClosureData) {
CSSStyleRule* rule = Rule();
if (rule->IsReadOnly()) {
return NS_OK;
}
if (RefPtr<StyleSheet> sheet = rule->GetStyleSheet()) {
if (aDecl != mDecls) {
mDecls->SetOwningRule(nullptr);
RefPtr<DeclarationBlock> decls = aDecl;
Servo_StyleRule_SetStyle(rule->Raw(), decls->Raw());
mDecls = std::move(decls);
mDecls->SetOwningRule(rule);
}
sheet->RuleChanged(rule, StyleRuleChangeKind::StyleRuleDeclarations);
}
return NS_OK;
}
Document* CSSStyleRuleDeclaration::DocToUpdate() { return nullptr; }
nsDOMCSSDeclaration::ParsingEnvironment
CSSStyleRuleDeclaration::GetParsingEnvironment(
nsIPrincipal* aSubjectPrincipal) const {
return GetParsingEnvironmentForRule(Rule(), CSSRule_Binding::STYLE_RULE);
}
// -- CSSStyleRule --------------------------------------------------
CSSStyleRule::CSSStyleRule(already_AddRefed<RawServoStyleRule> aRawRule,
StyleSheet* aSheet, css::Rule* aParentRule,
uint32_t aLine, uint32_t aColumn)
: BindingStyleRule(aSheet, aParentRule, aLine, aColumn),
mRawRule(aRawRule),
mDecls(Servo_StyleRule_GetStyle(mRawRule).Consume()) {}
NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(CSSStyleRule, css::Rule)
NS_IMPL_CYCLE_COLLECTION_CLASS(CSSStyleRule)
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(CSSStyleRule, css::Rule)
// Keep this in sync with IsCCLeaf.
// Trace the wrapper for our declaration. This just expands out
// NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER which we can't use
// directly because the wrapper is on the declaration, not on us.
tmp->mDecls.TraceWrapper(aCallbacks, aClosure);
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(CSSStyleRule)
// Keep this in sync with IsCCLeaf.
// Unlink the wrapper for our declaration.
//
// Note that this has to happen before unlinking css::Rule.
tmp->UnlinkDeclarationWrapper(tmp->mDecls);
NS_IMPL_CYCLE_COLLECTION_UNLINK_WEAK_PTR
NS_IMPL_CYCLE_COLLECTION_UNLINK_END_INHERITED(css::Rule)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(CSSStyleRule, css::Rule)
// Keep this in sync with IsCCLeaf.
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
bool CSSStyleRule::IsCCLeaf() const {
if (!Rule::IsCCLeaf()) {
return false;
}
return !mDecls.PreservingWrapper();
}
size_t CSSStyleRule::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const {
size_t n = aMallocSizeOf(this);
// Measurement of the following members may be added later if DMD finds it
// is worthwhile:
// - mRawRule
// - mDecls
return n;
}
#ifdef DEBUG
void CSSStyleRule::List(FILE* out, int32_t aIndent) const {
nsAutoCString str;
for (int32_t i = 0; i < aIndent; i++) {
str.AppendLiteral(" ");
}
Servo_StyleRule_Debug(mRawRule, &str);
fprintf_stderr(out, "%s\n", str.get());
}
#endif
/* CSSRule implementation */
void CSSStyleRule::GetCssText(nsACString& aCssText) const {
Servo_StyleRule_GetCssText(mRawRule, &aCssText);
}
nsICSSDeclaration* CSSStyleRule::Style() { return &mDecls; }
/* CSSStyleRule implementation */
void CSSStyleRule::GetSelectorText(nsACString& aSelectorText) {
Servo_StyleRule_GetSelectorText(mRawRule, &aSelectorText);
}
void CSSStyleRule::SetSelectorText(const nsACString& aSelectorText) {
if (IsReadOnly()) {
return;
}
if (RefPtr<StyleSheet> sheet = GetStyleSheet()) {
// StyleRule lives inside of the Inner, it is unsafe to call WillDirty
// if sheet does not already have a unique Inner.
sheet->AssertHasUniqueInner();
sheet->WillDirty();
// TODO(emilio): May actually be more efficient to handle this as rule
// removal + addition, from the point of view of invalidation...
const RawServoStyleSheetContents* contents = sheet->RawContents();
if (Servo_StyleRule_SetSelectorText(contents, mRawRule, &aSelectorText)) {
sheet->RuleChanged(this, StyleRuleChangeKind::Generic);
}
}
}
uint32_t CSSStyleRule::GetSelectorCount() {
uint32_t aCount;
Servo_StyleRule_GetSelectorCount(mRawRule, &aCount);
return aCount;
}
nsresult CSSStyleRule::GetSelectorText(uint32_t aSelectorIndex,
nsACString& aText) {
Servo_StyleRule_GetSelectorTextAtIndex(mRawRule, aSelectorIndex, &aText);
return NS_OK;
}
nsresult CSSStyleRule::GetSpecificity(uint32_t aSelectorIndex,
uint64_t* aSpecificity) {
Servo_StyleRule_GetSpecificityAtIndex(mRawRule, aSelectorIndex, aSpecificity);
return NS_OK;
}
nsresult CSSStyleRule::SelectorMatchesElement(Element* aElement,
uint32_t aSelectorIndex,
const nsAString& aPseudo,
bool aRelevantLinkVisited,
bool* aMatches) {
PseudoStyleType pseudoType = PseudoStyleType::NotPseudo;
if (!aPseudo.IsEmpty()) {
RefPtr<nsAtom> pseudoElt = NS_Atomize(aPseudo);
pseudoType = nsCSSPseudoElements::GetPseudoType(
pseudoElt, CSSEnabledState::IgnoreEnabledState);
if (pseudoType == PseudoStyleType::NotPseudo) {
*aMatches = false;
return NS_OK;
}
}
*aMatches = Servo_StyleRule_SelectorMatchesElement(
mRawRule, aElement, aSelectorIndex, pseudoType, aRelevantLinkVisited);
return NS_OK;
}
NotNull<DeclarationBlock*> CSSStyleRule::GetDeclarationBlock() const {
return WrapNotNull(mDecls.mDecls);
}
} // namespace dom
} // namespace mozilla
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