/* -*- 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<RawServoImportRule> 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());

  MOZ_ASSERT(sheet);

  mChildSheet = const_cast<StyleSheet*>(sheet);

  mChildSheet->SetOwnerRule(this);

}

CSSImportRule::~CSSImportRule()

{

  if (mChildSheet) {

    mChildSheet->SetOwnerRule(nullptr);

  }

}

// 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)

  // 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(CSSImportRule)

  if (tmp->mChildSheet) {

    tmp->mChildSheet->SetOwnerRule(nullptr);

    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

dom::MediaList*

CSSImportRule::GetMedia() const

{

  // When Bug 1326509 is fixed, we can assert mChildSheet instead.

  return mChildSheet ? mChildSheet->Media() : nullptr;

}

void

CSSImportRule::GetHref(nsAString& aHref) const

{

  Servo_ImportRule_GetHref(mRawRule, &aHref);

}

/* virtual */ void

CSSImportRule::GetCssText(nsAString& 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