/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "mozilla/dom/HTMLPreElement.h"

#include "mozilla/MappedDeclarationsBuilder.h"
#include "mozilla/dom/HTMLPreElementBinding.h"
#include "nsAttrValueInlines.h"
#include "nsGkAtoms.h"
#include "nsStyleConsts.h"

NS_IMPL_NS_NEW_HTML_ELEMENT(Pre)

namespace mozilla::dom {

HTMLPreElement::~HTMLPreElement() = default;

NS_IMPL_ELEMENT_CLONE(HTMLPreElement)

bool HTMLPreElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
                                    const nsAString& aValue,
                                    nsIPrincipal* aMaybeScriptedPrincipal,
                                    nsAttrValue& aResult) {
  if (aNamespaceID == kNameSpaceID_None) {
    if (aAttribute == nsGkAtoms::width) {
      return aResult.ParseIntValue(aValue);
    }
  }

  return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
                                              aMaybeScriptedPrincipal, aResult);
}

void HTMLPreElement::MapAttributesIntoRule(
    MappedDeclarationsBuilder& aBuilder) {
  // wrap: empty
  if (aBuilder.GetAttr(nsGkAtoms::wrap)) {
    // Equivalent to expanding `white-space: pre-wrap`
    aBuilder.SetKeywordValue(eCSSProperty_white_space_collapse,
                             StyleWhiteSpaceCollapse::Preserve);
    aBuilder.SetKeywordValue(eCSSProperty_text_wrap_mode,
                             StyleTextWrapMode::Wrap);
  }

  nsGenericHTMLElement::MapCommonAttributesInto(aBuilder);
}

NS_IMETHODIMP_(bool)
HTMLPreElement::IsAttributeMapped(const nsAtom* aAttribute) const {
  if (!mNodeInfo->Equals(nsGkAtoms::pre)) {
    return nsGenericHTMLElement::IsAttributeMapped(aAttribute);
  }

  static const MappedAttributeEntry attributes[] = {
      {nsGkAtoms::wrap},
      {nullptr},
  };

  static const MappedAttributeEntry* const map[] = {
      attributes,
      sCommonAttributeMap,
  };

  return FindAttributeDependence(aAttribute, map);
}

nsMapRuleToAttributesFunc HTMLPreElement::GetAttributeMappingFunction() const {
  if (!mNodeInfo->Equals(nsGkAtoms::pre)) {
    return nsGenericHTMLElement::GetAttributeMappingFunction();
  }

  return &MapAttributesIntoRule;
}

JSObject* HTMLPreElement::WrapNode(JSContext* aCx,
                                   JS::Handle<JSObject*> aGivenProto) {
  return HTMLPreElement_Binding::Wrap(aCx, this, aGivenProto);
}

}  // namespace mozilla::dom