layout/style/CSSMozDocumentRule.cpp

   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/CSSMozDocumentRule.h"
   8 #include "mozilla/dom/CSSMozDocumentRuleBinding.h"
   9
  10 #include "js/RegExpFlags.h"
  11 #include "mozilla/dom/BrowsingContext.h"
  12 #include "mozilla/ServoBindings.h"
  13 #include "nsContentUtils.h"
  14 #include "nsHTMLDocument.h"
  15
  16 namespace mozilla::dom {
  17
  18 using namespace mozilla::css;
  19
  20 /* virtual */
  21 JSObject* CSSMozDocumentRule::WrapObject(JSContext* aCx,
  22                                          JS::Handle<JSObject*> aGivenProto) {
  23   return CSSMozDocumentRule_Binding::Wrap(aCx, this, aGivenProto);
  24 }
  25
  26 bool CSSMozDocumentRule::Match(const Document* aDoc, nsIURI* aDocURI,
  27                                const nsACString& aDocURISpec,
  28                                const nsACString& aPattern,
  29                                DocumentMatchingFunction aMatchingFunction) {
  30   switch (aMatchingFunction) {
  31     case DocumentMatchingFunction::MediaDocument: {
  32       auto kind = aDoc->MediaDocumentKind();
  33       if (aPattern.EqualsLiteral("all")) {
  34         return kind != Document::MediaDocumentKind::NotMedia;
  35       }
  36       MOZ_ASSERT(aPattern.EqualsLiteral("plugin") ||
  37                  aPattern.EqualsLiteral("image") ||
  38                  aPattern.EqualsLiteral("video"));
  39       switch (kind) {
  40         case Document::MediaDocumentKind::NotMedia:
  41           return false;
  42         case Document::MediaDocumentKind::Plugin:
  43           return aPattern.EqualsLiteral("plugin");
  44         case Document::MediaDocumentKind::Image:
  45           return aPattern.EqualsLiteral("image");
  46         case Document::MediaDocumentKind::Video:
  47           return aPattern.EqualsLiteral("video");
  48       }
  49       MOZ_ASSERT_UNREACHABLE("Unknown media document kind");
  50       return false;
  51     }
  52     case DocumentMatchingFunction::URL:
  53       return aDocURISpec == aPattern;
  54     case DocumentMatchingFunction::URLPrefix:
  55       return StringBeginsWith(aDocURISpec, aPattern);
  56     case DocumentMatchingFunction::Domain: {
  57       nsAutoCString host;
  58       if (aDocURI) {
  59         aDocURI->GetHost(host);
  60       }
  61       int32_t lenDiff = host.Length() - aPattern.Length();
  62       if (lenDiff == 0) {
  63         return host == aPattern;
  64       }
  65       return StringEndsWith(host, aPattern) && host.CharAt(lenDiff - 1) == '.';
  66     }
  67     case DocumentMatchingFunction::RegExp: {
  68       // Using JS::RegExpFlag::Unicode to allow patterns containing for example
  69       // [^/].
  70       return nsContentUtils::IsPatternMatching(
  71                  NS_ConvertUTF8toUTF16(aDocURISpec),
  72                  NS_ConvertUTF8toUTF16(aPattern), aDoc,
  73                  /* aHasMultiple = */ false, JS::RegExpFlag::Unicode)
  74           .valueOr(false);
  75     }
  76     case DocumentMatchingFunction::PlainTextDocument:
  77       return aDoc->IsHTMLOrXHTML() && aDoc->AsHTMLDocument()->IsPlainText();
  78     case DocumentMatchingFunction::UnobservableDocument: {
  79       const BrowsingContext* bc = aDoc->GetBrowsingContext();
  80       return bc && bc->IsTop() && !bc->HasOpener();
  81     }
  82   }
  83   MOZ_ASSERT_UNREACHABLE("Unknown matching function");
  84   return false;
  85 }
  86
  87 CSSMozDocumentRule::CSSMozDocumentRule(RefPtr<StyleDocumentRule> aRawRule,
  88                                        StyleSheet* aSheet,
  89                                        css::Rule* aParentRule, uint32_t aLine,
  90                                        uint32_t aColumn)
  91     : css::ConditionRule(aSheet, aParentRule, aLine, aColumn),
  92       mRawRule(std::move(aRawRule)) {}
  93
  94 NS_IMPL_ADDREF_INHERITED(CSSMozDocumentRule, css::ConditionRule)
  95 NS_IMPL_RELEASE_INHERITED(CSSMozDocumentRule, css::ConditionRule)
  96
  97 // QueryInterface implementation for MozDocumentRule
  98 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CSSMozDocumentRule)
  99 NS_INTERFACE_MAP_END_INHERITING(css::ConditionRule)
 100
 101 #ifdef DEBUG
 102 /* virtual */
 103 void CSSMozDocumentRule::List(FILE* out, int32_t aIndent) const {
 104   nsAutoCString str;
 105   for (int32_t i = 0; i < aIndent; i++) {
 106     str.AppendLiteral("  ");
 107   }
 108   Servo_DocumentRule_Debug(mRawRule, &str);
 109   fprintf_stderr(out, "%s\n", str.get());
 110 }
 111 #endif
 112
 113 void CSSMozDocumentRule::SetRawAfterClone(RefPtr<StyleDocumentRule> aRaw) {
 114   mRawRule = std::move(aRaw);
 115   css::ConditionRule::DidSetRawAfterClone();
 116 }
 117
 118 already_AddRefed<StyleLockedCssRules>
 119 CSSMozDocumentRule::GetOrCreateRawRules() {
 120   return Servo_DocumentRule_GetRules(mRawRule).Consume();
 121 }
 122
 123 StyleCssRuleType CSSMozDocumentRule::Type() const {
 124   return StyleCssRuleType::Document;
 125 }
 126
 127 void CSSMozDocumentRule::GetConditionText(nsACString& aConditionText) {
 128   Servo_DocumentRule_GetConditionText(mRawRule, &aConditionText);
 129 }
 130
 131 /* virtual */
 132 void CSSMozDocumentRule::GetCssText(nsACString& aCssText) const {
 133   Servo_DocumentRule_GetCssText(mRawRule, &aCssText);
 134 }
 135
 136 /* virtual */
 137 size_t CSSMozDocumentRule::SizeOfIncludingThis(
 138     MallocSizeOf aMallocSizeOf) const {
 139   // TODO Implement this!
 140   return aMallocSizeOf(this);
 141 }
 142
 143 }  // namespace mozilla::dom