dom/html/HTMLPreElement.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/HTMLPreElement.h"
   8 #include "mozilla/dom/HTMLPreElementBinding.h"
   9
  10 #include "mozilla/MappedDeclarationsBuilder.h"
  11 #include "nsAttrValueInlines.h"
  12 #include "nsGkAtoms.h"
  13 #include "nsStyleConsts.h"
  14
  15 NS_IMPL_NS_NEW_HTML_ELEMENT(Pre)
  16
  17 namespace mozilla::dom {
  18
  19 HTMLPreElement::~HTMLPreElement() = default;
  20
  21 NS_IMPL_ELEMENT_CLONE(HTMLPreElement)
  22
  23 bool HTMLPreElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
  24                                     const nsAString& aValue,
  25                                     nsIPrincipal* aMaybeScriptedPrincipal,
  26                                     nsAttrValue& aResult) {
  27   if (aNamespaceID == kNameSpaceID_None) {
  28     if (aAttribute == nsGkAtoms::width) {
  29       return aResult.ParseIntValue(aValue);
  30     }
  31   }
  32
  33   return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
  34                                               aMaybeScriptedPrincipal, aResult);
  35 }
  36
  37 void HTMLPreElement::MapAttributesIntoRule(
  38     MappedDeclarationsBuilder& aBuilder) {
  39   // wrap: empty
  40   if (aBuilder.GetAttr(nsGkAtoms::wrap)) {
  41     aBuilder.SetKeywordValue(eCSSProperty_white_space,
  42                              StyleWhiteSpace::PreWrap);
  43   }
  44
  45   nsGenericHTMLElement::MapCommonAttributesInto(aBuilder);
  46 }
  47
  48 NS_IMETHODIMP_(bool)
  49 HTMLPreElement::IsAttributeMapped(const nsAtom* aAttribute) const {
  50   if (!mNodeInfo->Equals(nsGkAtoms::pre)) {
  51     return nsGenericHTMLElement::IsAttributeMapped(aAttribute);
  52   }
  53
  54   static const MappedAttributeEntry attributes[] = {
  55       {nsGkAtoms::wrap},
  56       {nullptr},
  57   };
  58
  59   static const MappedAttributeEntry* const map[] = {
  60       attributes,
  61       sCommonAttributeMap,
  62   };
  63
  64   return FindAttributeDependence(aAttribute, map);
  65 }
  66
  67 nsMapRuleToAttributesFunc HTMLPreElement::GetAttributeMappingFunction() const {
  68   if (!mNodeInfo->Equals(nsGkAtoms::pre)) {
  69     return nsGenericHTMLElement::GetAttributeMappingFunction();
  70   }
  71
  72   return &MapAttributesIntoRule;
  73 }
  74
  75 JSObject* HTMLPreElement::WrapNode(JSContext* aCx,
  76                                    JS::Handle<JSObject*> aGivenProto) {
  77   return HTMLPreElement_Binding::Wrap(aCx, this, aGivenProto);
  78 }
  79
  80 }  // namespace mozilla::dom