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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/CSSImportRule.h"
#include "mozilla/dom/CSSImportRuleBinding.h"
#include "mozilla/dom/MediaList.h"
#include "mozilla/ServoBindings.h"
#include "mozilla/StyleSheet.h"
namespace mozilla {
namespace dom {
CSSImportRule::CSSImportRule(RefPtr<StyleLockedImportRule> aRawRule,
StyleSheet* aSheet, css::Rule* aParentRule,
uint32_t aLine, uint32_t aColumn)
: css::Rule(aSheet, aParentRule, aLine, aColumn),
mRawRule(std::move(aRawRule)) {
const auto* sheet = Servo_ImportRule_GetSheet(mRawRule.get());
mChildSheet = const_cast<StyleSheet*>(sheet);
if (mChildSheet) {
mChildSheet->AddReferencingRule(*this);
}
}
CSSImportRule::~CSSImportRule() {
if (mChildSheet) {
mChildSheet->RemoveReferencingRule(*this);
}
}
// QueryInterface implementation for CSSImportRule
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CSSImportRule)
NS_INTERFACE_MAP_END_INHERITING(css::Rule)
NS_IMPL_CYCLE_COLLECTION_CLASS(CSSImportRule)
NS_IMPL_ADDREF_INHERITED(CSSImportRule, css::Rule)
NS_IMPL_RELEASE_INHERITED(CSSImportRule, css::Rule)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(CSSImportRule, css::Rule)
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mChildSheet");
cb.NoteXPCOMChild(tmp->mChildSheet);
MOZ_ASSERT_IF(tmp->mRawRule,
Servo_ImportRule_GetSheet(tmp->mRawRule) == tmp->mChildSheet);
// Note the child sheet twice, since the Servo rule also holds a strong
// reference to it, but only if we're the "primary" rule reference.
if (tmp->mChildSheet && tmp->mChildSheet->GetOwnerRule() == tmp) {
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mRawRule.stylesheet");
cb.NoteXPCOMChild(tmp->mChildSheet);
}
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(CSSImportRule)
if (tmp->mChildSheet) {
tmp->mChildSheet->RemoveReferencingRule(*tmp);
tmp->mChildSheet = nullptr;
}
tmp->mRawRule = nullptr;
NS_IMPL_CYCLE_COLLECTION_UNLINK_END_INHERITED(css::Rule)
#ifdef DEBUG
/* virtual */
void CSSImportRule::List(FILE* out, int32_t aIndent) const {
nsAutoCString str;
for (int32_t i = 0; i < aIndent; i++) {
str.AppendLiteral(" ");
}
Servo_ImportRule_Debug(mRawRule, &str);
fprintf_stderr(out, "%s\n", str.get());
}
#endif
StyleCssRuleType CSSImportRule::Type() const {
return StyleCssRuleType::Import;
}
void CSSImportRule::SetRawAfterClone(RefPtr<StyleLockedImportRule> aRaw) {
mRawRule = std::move(aRaw);
if (mChildSheet) {
mChildSheet->RemoveReferencingRule(*this);
}
mChildSheet =
const_cast<StyleSheet*>(Servo_ImportRule_GetSheet(mRawRule.get()));
if (mChildSheet) {
mChildSheet->AddReferencingRule(*this);
}
}
StyleSheet* CSSImportRule::GetStyleSheetForBindings() {
if (mChildSheet) {
// FIXME(emilio): This is needed to make sure we don't expose shared sheets
// to the OM (see wpt /css/cssom/cssimportrule-sheet-identity.html for
// example).
//
// Perhaps instead we could create a clone of the stylesheet and keep it in
// mChildSheet, without calling EnsureUniqueInner(), or something like that?
if (StyleSheet* parent = GetParentStyleSheet()) {
parent->EnsureUniqueInner();
}
}
return mChildSheet;
}
dom::MediaList* CSSImportRule::GetMedia() {
auto* sheet = GetStyleSheetForBindings();
return sheet ? sheet->Media() : nullptr;
}
void CSSImportRule::DropSheetReference() {
if (mChildSheet) {
mChildSheet->RemoveFromParent();
}
Rule::DropSheetReference();
}
void CSSImportRule::GetHref(nsAString& aHref) const {
Servo_ImportRule_GetHref(mRawRule, &aHref);
}
void CSSImportRule::GetLayerName(nsACString& aName) const {
Servo_ImportRule_GetLayerName(mRawRule, &aName);
}
void CSSImportRule::GetSupportsText(nsACString& aSupportsText) const {
Servo_ImportRule_GetSupportsText(mRawRule, &aSupportsText);
}
/* virtual */
void CSSImportRule::GetCssText(nsACString& aCssText) const {
Servo_ImportRule_GetCssText(mRawRule, &aCssText);
}
/* virtual */
size_t CSSImportRule::SizeOfIncludingThis(
mozilla::MallocSizeOf aMallocSizeOf) const {
// TODO Implement this!
return aMallocSizeOf(this);
}
bool CSSImportRule::IsCCLeaf() const {
// We're not a leaf.
return false;
}
/* virtual */
JSObject* CSSImportRule::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return CSSImportRule_Binding::Wrap(aCx, this, aGivenProto);
}
} // namespace dom
} // namespace mozilla
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