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/MappedDeclarations.h"
  11 #include "nsAttrValueInlines.h"
  12 #include "nsGkAtoms.h"
  13 #include "nsStyleConsts.h"
  14 #include "nsMappedAttributes.h"
  15
  16 NS_IMPL_NS_NEW_HTML_ELEMENT(Pre)
  17
  18 namespace mozilla::dom {
  19
  20 HTMLPreElement::~HTMLPreElement() = default;
  21
  22 NS_IMPL_ELEMENT_CLONE(HTMLPreElement)
  23
  24 bool HTMLPreElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
  25                                     const nsAString& aValue,
  26                                     nsIPrincipal* aMaybeScriptedPrincipal,
  27                                     nsAttrValue& aResult) {
  28   if (aNamespaceID == kNameSpaceID_None) {
  29     if (aAttribute == nsGkAtoms::width) {
  30       return aResult.ParseIntValue(aValue);
  31     }
  32   }
  33
  34   return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
  35                                               aMaybeScriptedPrincipal, aResult);
  36 }
  37
  38 void HTMLPreElement::MapAttributesIntoRule(
  39     const nsMappedAttributes* aAttributes, MappedDeclarations& aDecls) {
  40   if (!aDecls.PropertyIsSet(eCSSProperty_white_space)) {
  41     // wrap: empty
  42     if (aAttributes->GetAttr(nsGkAtoms::wrap))
  43       aDecls.SetKeywordValue(eCSSProperty_white_space,
  44                              StyleWhiteSpace::PreWrap);
  45   }
  46
  47   nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aDecls);
  48 }
  49
  50 NS_IMETHODIMP_(bool)
  51 HTMLPreElement::IsAttributeMapped(const nsAtom* aAttribute) const {
  52   if (!mNodeInfo->Equals(nsGkAtoms::pre)) {
  53     return nsGenericHTMLElement::IsAttributeMapped(aAttribute);
  54   }
  55
  56   static const MappedAttributeEntry attributes[] = {
  57       {nsGkAtoms::wrap},
  58       {nullptr},
  59   };
  60
  61   static const MappedAttributeEntry* const map[] = {
  62       attributes,
  63       sCommonAttributeMap,
  64   };
  65
  66   return FindAttributeDependence(aAttribute, map);
  67 }
  68
  69 nsMapRuleToAttributesFunc HTMLPreElement::GetAttributeMappingFunction() const {
  70   if (!mNodeInfo->Equals(nsGkAtoms::pre)) {
  71     return nsGenericHTMLElement::GetAttributeMappingFunction();
  72   }
  73
  74   return &MapAttributesIntoRule;
  75 }
  76
  77 JSObject* HTMLPreElement::WrapNode(JSContext* aCx,
  78                                    JS::Handle<JSObject*> aGivenProto) {
  79   return HTMLPreElement_Binding::Wrap(aCx, this, aGivenProto);
  80 }
  81
  82 }  // namespace mozilla::dom