tor-browser

The Tor Browser
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HTMLPreElement.cpp (2687B)

      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 
      9 #include "mozilla/MappedDeclarationsBuilder.h"
     10 #include "mozilla/dom/HTMLPreElementBinding.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    // Equivalent to expanding `white-space: pre-wrap`
     42    aBuilder.SetKeywordValue(eCSSProperty_white_space_collapse,
     43                             StyleWhiteSpaceCollapse::Preserve);
     44    aBuilder.SetKeywordValue(eCSSProperty_text_wrap_mode,
     45                             StyleTextWrapMode::Wrap);
     46  }
     47 
     48  nsGenericHTMLElement::MapCommonAttributesInto(aBuilder);
     49 }
     50 
     51 NS_IMETHODIMP_(bool)
     52 HTMLPreElement::IsAttributeMapped(const nsAtom* aAttribute) const {
     53  if (!mNodeInfo->Equals(nsGkAtoms::pre)) {
     54    return nsGenericHTMLElement::IsAttributeMapped(aAttribute);
     55  }
     56 
     57  static const MappedAttributeEntry attributes[] = {
     58      {nsGkAtoms::wrap},
     59      {nullptr},
     60  };
     61 
     62  static const MappedAttributeEntry* const map[] = {
     63      attributes,
     64      sCommonAttributeMap,
     65  };
     66 
     67  return FindAttributeDependence(aAttribute, map);
     68 }
     69 
     70 nsMapRuleToAttributesFunc HTMLPreElement::GetAttributeMappingFunction() const {
     71  if (!mNodeInfo->Equals(nsGkAtoms::pre)) {
     72    return nsGenericHTMLElement::GetAttributeMappingFunction();
     73  }
     74 
     75  return &MapAttributesIntoRule;
     76 }
     77 
     78 JSObject* HTMLPreElement::WrapNode(JSContext* aCx,
     79                                   JS::Handle<JSObject*> aGivenProto) {
     80  return HTMLPreElement_Binding::Wrap(aCx, this, aGivenProto);
     81 }
     82 
     83 }  // namespace mozilla::dom