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/MappedDeclarations.h"
  10 #include "nsAttrValueInlines.h"
  11 #include "nsStyleConsts.h"
  12 #include "nsMappedAttributes.h"
  13
  14
  15 NS_IMPL_NS_NEW_HTML_ELEMENT(BR)
  16
  17 namespace mozilla {
  18 namespace dom {
  19
  20 HTMLBRElement::HTMLBRElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
  21   : nsGenericHTMLElement(std::move(aNodeInfo))
  22 {
  23 }
  24
  25 HTMLBRElement::~HTMLBRElement()
  26 {
  27 }
  28
  29 NS_IMPL_ELEMENT_CLONE(HTMLBRElement)
  30
  31 static const nsAttrValue::EnumTable kClearTable[] = {
  32   { "left", StyleClear::Left },
  33   { "right", StyleClear::Right },
  34   { "all", StyleClear::Both },
  35   { "both", StyleClear::Both },
  36   { nullptr, 0 }
  37 };
  38
  39 bool
  40 HTMLBRElement::ParseAttribute(int32_t aNamespaceID,
  41                               nsAtom* aAttribute,
  42                               const nsAString& aValue,
  43                               nsIPrincipal* aMaybeScriptedPrincipal,
  44                               nsAttrValue& aResult)
  45 {
  46   if (aAttribute == nsGkAtoms::clear && aNamespaceID == kNameSpaceID_None) {
  47     return aResult.ParseEnumValue(aValue, kClearTable, false);
  48   }
  49
  50   return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
  51                                               aMaybeScriptedPrincipal, aResult);
  52 }
  53
  54 void
  55 HTMLBRElement::MapAttributesIntoRule(const nsMappedAttributes* aAttributes,
  56                                      MappedDeclarations& aDecls)
  57 {
  58   if (!aDecls.PropertyIsSet(eCSSProperty_clear)) {
  59     const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::clear);
  60     if (value && value->Type() == nsAttrValue::eEnum)
  61       aDecls.SetKeywordValue(eCSSProperty_clear, value->GetEnumValue());
  62   }
  63   nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aDecls);
  64 }
  65
  66 NS_IMETHODIMP_(bool)
  67 HTMLBRElement::IsAttributeMapped(const nsAtom* aAttribute) const
  68 {
  69   static const MappedAttributeEntry attributes[] = {
  70     { nsGkAtoms::clear },
  71     { nullptr }
  72   };
  73
  74   static const MappedAttributeEntry* const map[] = {
  75     attributes,
  76     sCommonAttributeMap,
  77   };
  78
  79   return FindAttributeDependence(aAttribute, map);
  80 }
  81
  82 nsMapRuleToAttributesFunc
  83 HTMLBRElement::GetAttributeMappingFunction() const
  84 {
  85   return &MapAttributesIntoRule;
  86 }
  87
  88 JSObject*
  89 HTMLBRElement::WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto)
  90 {
  91   return HTMLBRElement_Binding::Wrap(aCx, this, aGivenProto);
  92 }
  93
  94 } // namespace dom
  95 } // namespace mozilla