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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/CSSPageRule.h"
#include "mozilla/dom/CSSPageRuleBinding.h"
#include "mozilla/DeclarationBlock.h"
#include "mozilla/ServoBindings.h"
namespace mozilla {
namespace dom {
// -- CSSPageRuleDeclaration ---------------------------------------
CSSPageRuleDeclaration::CSSPageRuleDeclaration(
already_AddRefed<RawServoDeclarationBlock> aDecls)
: mDecls(new DeclarationBlock(std::move(aDecls))) {}
CSSPageRuleDeclaration::~CSSPageRuleDeclaration() {
mDecls->SetOwningRule(nullptr);
}
// QueryInterface implementation for CSSPageRuleDeclaration
NS_INTERFACE_MAP_BEGIN(CSSPageRuleDeclaration)
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(CSSPageRuleDeclaration, Rule())
NS_IMPL_RELEASE_USING_AGGREGATOR(CSSPageRuleDeclaration, Rule())
/* nsDOMCSSDeclaration implementation */
css::Rule* CSSPageRuleDeclaration::GetParentRule() { return Rule(); }
nsINode* CSSPageRuleDeclaration::GetParentObject() {
return Rule()->GetParentObject();
}
DeclarationBlock* CSSPageRuleDeclaration::GetOrCreateCSSDeclaration(
Operation aOperation, DeclarationBlock** aCreated) {
return mDecls;
}
nsresult CSSPageRuleDeclaration::SetCSSDeclaration(
DeclarationBlock* aDecl, MutationClosureData* aClosureData) {
MOZ_ASSERT(aDecl, "must be non-null");
CSSPageRule* rule = Rule();
if (rule->IsReadOnly()) {
return NS_OK;
}
if (aDecl != mDecls) {
mDecls->SetOwningRule(nullptr);
RefPtr<DeclarationBlock> decls = aDecl;
Servo_PageRule_SetStyle(rule->Raw(), decls->Raw());
mDecls = std::move(decls);
mDecls->SetOwningRule(rule);
}
return NS_OK;
}
nsDOMCSSDeclaration::ParsingEnvironment
CSSPageRuleDeclaration::GetParsingEnvironment(
nsIPrincipal* aSubjectPrincipal) const {
return GetParsingEnvironmentForRule(Rule(), CSSRule_Binding::PAGE_RULE);
}
// -- CSSPageRule --------------------------------------------------
CSSPageRule::CSSPageRule(RefPtr<RawServoPageRule> aRawRule, StyleSheet* aSheet,
css::Rule* aParentRule, uint32_t aLine,
uint32_t aColumn)
: css::Rule(aSheet, aParentRule, aLine, aColumn),
mRawRule(std::move(aRawRule)),
mDecls(Servo_PageRule_GetStyle(mRawRule).Consume()) {}
NS_IMPL_ADDREF_INHERITED(CSSPageRule, css::Rule)
NS_IMPL_RELEASE_INHERITED(CSSPageRule, css::Rule)
// QueryInterface implementation for PageRule
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CSSPageRule)
NS_INTERFACE_MAP_END_INHERITING(css::Rule)
NS_IMPL_CYCLE_COLLECTION_CLASS(CSSPageRule)
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(CSSPageRule, 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(CSSPageRule)
// 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);
tmp->mDecls.mDecls->SetOwningRule(nullptr);
NS_IMPL_CYCLE_COLLECTION_UNLINK_END_INHERITED(css::Rule)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(CSSPageRule, css::Rule)
// Keep this in sync with IsCCLeaf.
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
bool CSSPageRule::IsCCLeaf() const {
if (!Rule::IsCCLeaf()) {
return false;
}
return !mDecls.PreservingWrapper();
}
size_t CSSPageRule::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const {
// TODO Implement this!
return aMallocSizeOf(this);
}
#ifdef DEBUG
void CSSPageRule::List(FILE* out, int32_t aIndent) const {
nsAutoCString str;
for (int32_t i = 0; i < aIndent; i++) {
str.AppendLiteral(" ");
}
Servo_PageRule_Debug(mRawRule, &str);
fprintf_stderr(out, "%s\n", str.get());
}
#endif
/* CSSRule implementation */
void CSSPageRule::GetCssText(nsACString& aCssText) const {
Servo_PageRule_GetCssText(mRawRule, &aCssText);
}
/* CSSPageRule implementation */
nsICSSDeclaration* CSSPageRule::Style() { return &mDecls; }
JSObject* CSSPageRule::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return CSSPageRule_Binding::Wrap(aCx, this, aGivenProto);
}
} // namespace dom
} // namespace mozilla