dom/html/HTMLBRElement.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/HTMLBRElement.h"
   8 #include "mozilla/dom/HTMLBRElementBinding.h"
   9 #include "mozilla/MappedDeclarationsBuilder.h"
  10 #include "nsAttrValueInlines.h"
  11 #include "nsStyleConsts.h"
  12
  13 NS_IMPL_NS_NEW_HTML_ELEMENT(BR)
  14
  15 namespace mozilla::dom {
  16
  17 HTMLBRElement::HTMLBRElement(
  18     already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
  19     : nsGenericHTMLElement(std::move(aNodeInfo)) {}
  20
  21 HTMLBRElement::~HTMLBRElement() = default;
  22
  23 NS_IMPL_ELEMENT_CLONE(HTMLBRElement)
  24
  25 static const nsAttrValue::EnumTable kClearTable[] = {
  26     {"left", StyleClear::Left},
  27     {"right", StyleClear::Right},
  28     {"all", StyleClear::Both},
  29     {"both", StyleClear::Both},
  30     {nullptr, 0}};
  31
  32 bool HTMLBRElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
  33                                    const nsAString& aValue,
  34                                    nsIPrincipal* aMaybeScriptedPrincipal,
  35                                    nsAttrValue& aResult) {
  36   if (aAttribute == nsGkAtoms::clear && aNamespaceID == kNameSpaceID_None) {
  37     return aResult.ParseEnumValue(aValue, kClearTable, false);
  38   }
  39
  40   return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
  41                                               aMaybeScriptedPrincipal, aResult);
  42 }
  43
  44 void HTMLBRElement::MapAttributesIntoRule(MappedDeclarationsBuilder& aBuilder) {
  45   if (!aBuilder.PropertyIsSet(eCSSProperty_clear)) {
  46     const nsAttrValue* value = aBuilder.GetAttr(nsGkAtoms::clear);
  47     if (value && value->Type() == nsAttrValue::eEnum) {
  48       aBuilder.SetKeywordValue(eCSSProperty_clear, value->GetEnumValue());
  49     }
  50   }
  51   nsGenericHTMLElement::MapCommonAttributesInto(aBuilder);
  52 }
  53
  54 NS_IMETHODIMP_(bool)
  55 HTMLBRElement::IsAttributeMapped(const nsAtom* aAttribute) const {
  56   static const MappedAttributeEntry attributes[] = {{nsGkAtoms::clear},
  57                                                     {nullptr}};
  58
  59   static const MappedAttributeEntry* const map[] = {
  60       attributes,
  61       sCommonAttributeMap,
  62   };
  63
  64   return FindAttributeDependence(aAttribute, map);
  65 }
  66
  67 nsMapRuleToAttributesFunc HTMLBRElement::GetAttributeMappingFunction() const {
  68   return &MapAttributesIntoRule;
  69 }
  70
  71 JSObject* HTMLBRElement::WrapNode(JSContext* aCx,
  72                                   JS::Handle<JSObject*> aGivenProto) {
  73   return HTMLBRElement_Binding::Wrap(aCx, this, aGivenProto);
  74 }
  75
  76 }  // namespace mozilla::dom