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 #include "mozilla/ServoBindings.h"
  10 #include "nsContentUtils.h"
  11
  12 namespace mozilla {
  13 namespace dom {
  14
  15 using namespace mozilla::css;
  16
  17 /* virtual */
  18 JSObject* CSSMozDocumentRule::WrapObject(JSContext* aCx,
  19                                          JS::Handle<JSObject*> aGivenProto) {
  20   return CSSMozDocumentRule_Binding::Wrap(aCx, this, aGivenProto);
  21 }
  22
  23 bool CSSMozDocumentRule::Match(const Document* aDoc, nsIURI* aDocURI,
  24                                const nsACString& aDocURISpec,
  25                                const nsACString& aPattern,
  26                                DocumentMatchingFunction aMatchingFunction) {
  27   switch (aMatchingFunction) {
  28     case DocumentMatchingFunction::MediaDocument: {
  29       auto kind = aDoc->MediaDocumentKind();
  30       if (aPattern.EqualsLiteral("all")) {
  31         return kind != Document::MediaDocumentKind::NotMedia;
  32       }
  33       MOZ_ASSERT(aPattern.EqualsLiteral("plugin") ||
  34                  aPattern.EqualsLiteral("image") ||
  35                  aPattern.EqualsLiteral("video"));
  36       switch (kind) {
  37         case Document::MediaDocumentKind::NotMedia:
  38           return false;
  39         case Document::MediaDocumentKind::Plugin:
  40           return aPattern.EqualsLiteral("plugin");
  41         case Document::MediaDocumentKind::Image:
  42           return aPattern.EqualsLiteral("image");
  43         case Document::MediaDocumentKind::Video:
  44           return aPattern.EqualsLiteral("video");
  45       }
  46       MOZ_ASSERT_UNREACHABLE("Unknown media document kind");
  47       return false;
  48     }
  49     case DocumentMatchingFunction::URL:
  50       return aDocURISpec == aPattern;
  51     case DocumentMatchingFunction::URLPrefix:
  52       return StringBeginsWith(aDocURISpec, aPattern);
  53     case DocumentMatchingFunction::Domain: {
  54       nsAutoCString host;
  55       if (aDocURI) {
  56         aDocURI->GetHost(host);
  57       }
  58       int32_t lenDiff = host.Length() - aPattern.Length();
  59       if (lenDiff == 0) {
  60         return host == aPattern;
  61       }
  62       return StringEndsWith(host, aPattern) && host.CharAt(lenDiff - 1) == '.';
  63     }
  64     case DocumentMatchingFunction::RegExp: {
  65       NS_ConvertUTF8toUTF16 spec(aDocURISpec);
  66       NS_ConvertUTF8toUTF16 regex(aPattern);
  67       return nsContentUtils::IsPatternMatching(spec, regex, aDoc)
  68           .valueOr(false);
  69     }
  70   }
  71   MOZ_ASSERT_UNREACHABLE("Unknown matching function");
  72   return false;
  73 }
  74
  75 CSSMozDocumentRule::CSSMozDocumentRule(RefPtr<RawServoMozDocumentRule> aRawRule,
  76                                        StyleSheet* aSheet,
  77                                        css::Rule* aParentRule, uint32_t aLine,
  78                                        uint32_t aColumn)
  79     : css::ConditionRule(Servo_MozDocumentRule_GetRules(aRawRule).Consume(),
  80                          aSheet, aParentRule, aLine, aColumn),
  81       mRawRule(std::move(aRawRule)) {}
  82
  83 NS_IMPL_ADDREF_INHERITED(CSSMozDocumentRule, css::ConditionRule)
  84 NS_IMPL_RELEASE_INHERITED(CSSMozDocumentRule, css::ConditionRule)
  85
  86 // QueryInterface implementation for MozDocumentRule
  87 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CSSMozDocumentRule)
  88 NS_INTERFACE_MAP_END_INHERITING(css::ConditionRule)
  89
  90 #ifdef DEBUG
  91 /* virtual */
  92 void CSSMozDocumentRule::List(FILE* out, int32_t aIndent) const {
  93   nsAutoCString str;
  94   for (int32_t i = 0; i < aIndent; i++) {
  95     str.AppendLiteral("  ");
  96   }
  97   Servo_MozDocumentRule_Debug(mRawRule, &str);
  98   fprintf_stderr(out, "%s\n", str.get());
  99 }
 100 #endif
 101
 102 void CSSMozDocumentRule::GetConditionText(nsAString& aConditionText) {
 103   Servo_MozDocumentRule_GetConditionText(mRawRule, &aConditionText);
 104 }
 105
 106 void CSSMozDocumentRule::SetConditionText(const nsAString& aConditionText,
 107                                           ErrorResult& aRv) {
 108   if (IsReadOnly()) {
 109     return;
 110   }
 111
 112   aRv.Throw(NS_ERROR_NOT_IMPLEMENTED);
 113 }
 114
 115 /* virtual */
 116 void CSSMozDocumentRule::GetCssText(nsAString& aCssText) const {
 117   Servo_MozDocumentRule_GetCssText(mRawRule, &aCssText);
 118 }
 119
 120 /* virtual */
 121 size_t CSSMozDocumentRule::SizeOfIncludingThis(
 122     MallocSizeOf aMallocSizeOf) const {
 123   // TODO Implement this!
 124   return aMallocSizeOf(this);
 125 }
 126
 127 }  // namespace dom
 128 }  // namespace mozilla