dom/html/HTMLPreElement.cpp
author Manish Goregaokar <manishearth@gmail.com>
Thu, 26 Jan 2017 13:39:13 -0800
changeset 341515 7870b72807809a9ce4fb0165f9b10fdcb1f78aba
parent 296305 5055976586951e33f6aa1f965d055264b2c83145
child 341519 42f6914789d470f6ed827a8fb3478574907e7c59
permissions -rw-r--r--
Bug 1334330 - Part 1: stylo: Abstractify nsMappedAttributes to work on arbitrary containers of specified value data; r=bz,emilio MozReview-Commit-ID: BSM4TC9RKot

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/dom/HTMLPreElementBinding.h"

#include "nsAttrValueInlines.h"
#include "nsGkAtoms.h"
#include "nsStyleConsts.h"
#include "nsMappedAttributes.h"
#include "nsRuleData.h"

NS_IMPL_NS_NEW_HTML_ELEMENT(Pre)

namespace mozilla {
namespace dom {

HTMLPreElement::~HTMLPreElement()
{
}

NS_IMPL_ISUPPORTS_INHERITED(HTMLPreElement, nsGenericHTMLElement,
                            nsIDOMHTMLPreElement)

NS_IMPL_ELEMENT_CLONE(HTMLPreElement)

NS_IMPL_INT_ATTR(HTMLPreElement, Width, width)

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

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

void
HTMLPreElement::MapAttributesIntoRule(const nsMappedAttributes* aAttributes,
                                      GenericSpecifiedValues* aGenericData)
{
  nsRuleData* aData = aGenericData->AsRuleData();
  if (aData->mSIDs & NS_STYLE_INHERIT_BIT(Text)) {
    nsCSSValue* whiteSpace = aData->ValueForWhiteSpace();
    if (whiteSpace->GetUnit() == eCSSUnit_Null) {
      // wrap: empty
      if (aAttributes->GetAttr(nsGkAtoms::wrap))
        whiteSpace->SetIntValue(NS_STYLE_WHITESPACE_PRE_WRAP, eCSSUnit_Enumerated);
    }
  }

  nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aGenericData);
}

NS_IMETHODIMP_(bool)
HTMLPreElement::IsAttributeMapped(const nsIAtom* 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 HTMLPreElementBinding::Wrap(aCx, this, aGivenProto);
}

} // namespace dom
} // namespace mozilla