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CSSMediaRule.cpp (3447B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "mozilla/dom/CSSMediaRule.h"
      8 
      9 #include "mozilla/ServoBindings.h"
     10 #include "mozilla/dom/CSSMediaRuleBinding.h"
     11 #include "mozilla/dom/MediaList.h"
     12 
     13 namespace mozilla::dom {
     14 
     15 CSSMediaRule::CSSMediaRule(RefPtr<StyleMediaRule> aRawRule, StyleSheet* aSheet,
     16                           css::Rule* aParentRule, uint32_t aLine,
     17                           uint32_t aColumn)
     18    : ConditionRule(aSheet, aParentRule, aLine, aColumn),
     19      mRawRule(std::move(aRawRule)) {}
     20 
     21 CSSMediaRule::~CSSMediaRule() {
     22  if (mMediaList) {
     23    mMediaList->SetStyleSheet(nullptr);
     24  }
     25 }
     26 
     27 NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(CSSMediaRule, css::ConditionRule)
     28 
     29 NS_IMPL_CYCLE_COLLECTION_CLASS(CSSMediaRule)
     30 
     31 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(CSSMediaRule,
     32                                                css::ConditionRule)
     33  if (tmp->mMediaList) {
     34    tmp->mMediaList->SetStyleSheet(nullptr);
     35    tmp->mMediaList = nullptr;
     36  }
     37 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
     38 
     39 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(CSSMediaRule,
     40                                                  css::ConditionRule)
     41  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mMediaList)
     42 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
     43 
     44 bool CSSMediaRule::IsCCLeaf() const {
     45  return ConditionRule::IsCCLeaf() && !mMediaList;
     46 }
     47 
     48 /* virtual */
     49 void CSSMediaRule::DropSheetReference() {
     50  if (mMediaList) {
     51    mMediaList->SetStyleSheet(nullptr);
     52  }
     53  ConditionRule::DropSheetReference();
     54 }
     55 
     56 void CSSMediaRule::SetRawAfterClone(RefPtr<StyleMediaRule> aRaw) {
     57  mRawRule = std::move(aRaw);
     58  if (mMediaList) {
     59    mMediaList->SetRawAfterClone(Servo_MediaRule_GetMedia(mRawRule).Consume());
     60    mMediaList->SetStyleSheet(nullptr);
     61    mMediaList->SetStyleSheet(GetStyleSheet());
     62  }
     63  css::ConditionRule::DidSetRawAfterClone();
     64 }
     65 
     66 already_AddRefed<StyleLockedCssRules> CSSMediaRule::GetOrCreateRawRules() {
     67  return Servo_MediaRule_GetRules(mRawRule).Consume();
     68 }
     69 
     70 StyleCssRuleType CSSMediaRule::Type() const { return StyleCssRuleType::Media; }
     71 
     72 #ifdef DEBUG
     73 /* virtual */
     74 void CSSMediaRule::List(FILE* out, int32_t aIndent) const {
     75  nsAutoCString str;
     76  for (int32_t i = 0; i < aIndent; i++) {
     77    str.AppendLiteral("  ");
     78  }
     79  Servo_MediaRule_Debug(mRawRule, &str);
     80  fprintf_stderr(out, "%s\n", str.get());
     81 }
     82 #endif
     83 
     84 void CSSMediaRule::GetConditionText(nsACString& aConditionText) {
     85  Media()->GetMediaText(aConditionText);
     86 }
     87 
     88 /* virtual */
     89 void CSSMediaRule::GetCssText(nsACString& aCssText) const {
     90  Servo_MediaRule_GetCssText(mRawRule, &aCssText);
     91 }
     92 
     93 /* virtual */ dom::MediaList* CSSMediaRule::Media() {
     94  if (!mMediaList) {
     95    mMediaList = new MediaList(Servo_MediaRule_GetMedia(mRawRule).Consume());
     96    mMediaList->SetStyleSheet(GetStyleSheet());
     97  }
     98  return mMediaList;
     99 }
    100 
    101 /* virtual */
    102 size_t CSSMediaRule::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const {
    103  // TODO Implement this!
    104  return aMallocSizeOf(this);
    105 }
    106 
    107 /* virtual */
    108 JSObject* CSSMediaRule::WrapObject(JSContext* aCx,
    109                                   JS::Handle<JSObject*> aGivenProto) {
    110  return CSSMediaRule_Binding::Wrap(aCx, this, aGivenProto);
    111 }
    112 
    113 }  // namespace mozilla::dom