gecko-dev/layout/style/ServoImportRule.cpp

119 строки
3.4 KiB
C++

/* -*- 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/. */
/* representation of CSSImportRule for stylo */
#include "mozilla/ServoImportRule.h"
#include "mozilla/ServoBindings.h"
#include "mozilla/ServoStyleSheet.h"
namespace mozilla {
ServoImportRule::ServoImportRule(RefPtr<RawServoImportRule> aRawRule,
uint32_t aLine, uint32_t aColumn)
: CSSImportRule(aLine, aColumn)
, mRawRule(Move(aRawRule))
{
const auto* sheet = Servo_ImportRule_GetSheet(mRawRule.get());
MOZ_ASSERT(sheet);
mChildSheet = const_cast<ServoStyleSheet*>(sheet);
mChildSheet->SetOwnerRule(this);
}
ServoImportRule::~ServoImportRule()
{
if (mChildSheet) {
mChildSheet->SetOwnerRule(nullptr);
}
}
// QueryInterface implementation for ServoImportRule
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ServoImportRule)
NS_INTERFACE_MAP_END_INHERITING(dom::CSSImportRule)
NS_IMPL_CYCLE_COLLECTION_CLASS(ServoImportRule)
NS_IMPL_ADDREF_INHERITED(ServoImportRule, dom::CSSImportRule)
NS_IMPL_RELEASE_INHERITED(ServoImportRule, dom::CSSImportRule)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(ServoImportRule,
dom::CSSImportRule)
// Note the child sheet twice, since the Servo rule also holds a strong
// reference to it.
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mChildSheet");
cb.NoteXPCOMChild(tmp->mChildSheet);
MOZ_ASSERT_IF(tmp->mRawRule,
Servo_ImportRule_GetSheet(tmp->mRawRule) == tmp->mChildSheet);
cb.NoteXPCOMChild(tmp->mChildSheet);
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mRawRule.stylesheet");
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(ServoImportRule)
if (tmp->mChildSheet) {
tmp->mChildSheet->SetOwnerRule(nullptr);
tmp->mChildSheet = nullptr;
}
tmp->mRawRule = nullptr;
NS_IMPL_CYCLE_COLLECTION_UNLINK_END_INHERITED(dom::CSSImportRule)
/* virtual */ already_AddRefed<css::Rule>
ServoImportRule::Clone() const
{
// Rule::Clone is only used when CSSStyleSheetInner is cloned in
// preparation of being mutated. However, ServoStyleSheet never clones
// anything, so this method should never be called.
MOZ_ASSERT_UNREACHABLE("Shouldn't be cloning ServoImportRule");
return nullptr;
}
#ifdef DEBUG
/* virtual */ void
ServoImportRule::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
dom::MediaList*
ServoImportRule::GetMedia() const
{
// When Bug 1326509 is fixed, we can assert mChildSheet instead.
return mChildSheet ? mChildSheet->Media() : nullptr;
}
StyleSheet*
ServoImportRule::GetStyleSheet() const
{
return mChildSheet;
}
void
ServoImportRule::GetHref(nsAString& aHref) const
{
Servo_ImportRule_GetHref(mRawRule, &aHref);
}
/* virtual */ void
ServoImportRule::GetCssText(nsAString& aCssText) const
{
Servo_ImportRule_GetCssText(mRawRule, &aCssText);
}
/* virtual */ size_t
ServoImportRule::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
// TODO Implement this!
return aMallocSizeOf(this);
}
} // namespace mozilla