content/svg/content/src/nsSVGSwitchElement.cpp
author Ehsan Akhgari <ehsan@mozilla.com>
Wed, 22 Aug 2012 11:56:38 -0400
changeset 102997 a16372ce30b5f6b747246b01fcd215a4bf3b6342
parent 100844 b5c4b792f3f2a047e3517472d72842a76afb77cd
child 106706 c4f83d9d8243f3f853a5356188164a5fddee2b5a
permissions -rw-r--r--
Bug 579517 - Part 1: Automated conversion of NSPR numeric types to stdint types in Gecko; r=bsmedberg This patch was generated by a script. Here's the source of the script for future reference: function convert() { echo "Converting $1 to $2..." find . ! -wholename "*nsprpub*" \ ! -wholename "*security/nss*" \ ! -wholename "*/.hg*" \ ! -wholename "obj-ff-dbg*" \ ! -name nsXPCOMCID.h \ ! -name prtypes.h \ -type f \ \( -iname "*.cpp" \ -o -iname "*.h" \ -o -iname "*.c" \ -o -iname "*.cc" \ -o -iname "*.idl" \ -o -iname "*.ipdl" \ -o -iname "*.ipdlh" \ -o -iname "*.mm" \) | \ xargs -n 1 sed -i -e "s/\b$1\b/$2/g" } convert PRInt8 int8_t convert PRUint8 uint8_t convert PRInt16 int16_t convert PRUint16 uint16_t convert PRInt32 int32_t convert PRUint32 uint32_t convert PRInt64 int64_t convert PRUint64 uint64_t convert PRIntn int convert PRUintn unsigned convert PRSize size_t convert PROffset32 int32_t convert PROffset64 int64_t convert PRPtrdiff ptrdiff_t convert PRFloat64 double

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/Util.h"

#include "nsSVGSwitchElement.h"
#include "DOMSVGTests.h"
#include "nsIFrame.h"
#include "nsSVGUtils.h"
#include "mozilla/Preferences.h"

using namespace mozilla;

////////////////////////////////////////////////////////////////////////
// implementation


NS_IMPL_NS_NEW_SVG_ELEMENT(Switch)


//----------------------------------------------------------------------
// nsISupports methods

NS_IMPL_CYCLE_COLLECTION_CLASS(nsSVGSwitchElement)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(nsSVGSwitchElement,
                                                  nsSVGSwitchElementBase)
  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mActiveChild)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(nsSVGSwitchElement,
                                                nsSVGSwitchElementBase)
  NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mActiveChild)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END

NS_IMPL_ADDREF_INHERITED(nsSVGSwitchElement,nsSVGSwitchElementBase)
NS_IMPL_RELEASE_INHERITED(nsSVGSwitchElement,nsSVGSwitchElementBase)

DOMCI_NODE_DATA(SVGSwitchElement, nsSVGSwitchElement)

NS_INTERFACE_TABLE_HEAD_CYCLE_COLLECTION_INHERITED(nsSVGSwitchElement)
  NS_NODE_INTERFACE_TABLE5(nsSVGSwitchElement, nsIDOMNode, nsIDOMElement,
                           nsIDOMSVGElement, nsIDOMSVGSwitchElement,
                           nsIDOMSVGTests)
  NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(SVGSwitchElement)
NS_INTERFACE_MAP_END_INHERITING(nsSVGSwitchElementBase)

//----------------------------------------------------------------------
// Implementation

nsSVGSwitchElement::nsSVGSwitchElement(already_AddRefed<nsINodeInfo> aNodeInfo)
  : nsSVGSwitchElementBase(aNodeInfo)
{
}

void
nsSVGSwitchElement::MaybeInvalidate()
{
  // We must not change mActiveChild until after
  // InvalidateAndScheduleBoundsUpdate has been called, otherwise
  // it will not correctly invalidate the old mActiveChild area.

  nsIContent *newActiveChild = FindActiveChild();

  if (newActiveChild == mActiveChild) {
    return;
  }

  nsIFrame *frame = GetPrimaryFrame();
  if (frame) {
    nsSVGUtils::InvalidateAndScheduleReflowSVG(frame);
  }

  mActiveChild = newActiveChild;
}

//----------------------------------------------------------------------
// nsIDOMNode methods


NS_IMPL_ELEMENT_CLONE_WITH_INIT(nsSVGSwitchElement)

//----------------------------------------------------------------------
// nsINode methods

nsresult
nsSVGSwitchElement::InsertChildAt(nsIContent* aKid,
                                  uint32_t aIndex,
                                  bool aNotify)
{
  nsresult rv = nsSVGSwitchElementBase::InsertChildAt(aKid, aIndex, aNotify);
  if (NS_SUCCEEDED(rv)) {
    MaybeInvalidate();
  }
  return rv;
}

void
nsSVGSwitchElement::RemoveChildAt(uint32_t aIndex, bool aNotify)
{
  nsSVGSwitchElementBase::RemoveChildAt(aIndex, aNotify);
  MaybeInvalidate();
}
 
//----------------------------------------------------------------------
// nsIContent methods

NS_IMETHODIMP_(bool)
nsSVGSwitchElement::IsAttributeMapped(const nsIAtom* name) const
{
  static const MappedAttributeEntry* const map[] = {
    sFEFloodMap,
    sFiltersMap,
    sFontSpecificationMap,
    sGradientStopMap,
    sLightingEffectsMap,
    sMarkersMap,
    sTextContentElementsMap,
    sViewportsMap
  };

  return FindAttributeDependence(name, map) ||
    nsSVGSwitchElementBase::IsAttributeMapped(name);
}

//----------------------------------------------------------------------
// Implementation Helpers:

nsIContent *
nsSVGSwitchElement::FindActiveChild() const
{
  bool allowReorder = AttrValueIs(kNameSpaceID_None,
                                    nsGkAtoms::allowReorder,
                                    nsGkAtoms::yes, eCaseMatters);

  const nsAdoptingString& acceptLangs =
    Preferences::GetLocalizedString("intl.accept_languages");

  if (allowReorder && !acceptLangs.IsEmpty()) {
    int32_t bestLanguagePreferenceRank = -1;
    nsIContent *bestChild = nullptr;
    for (nsIContent* child = nsINode::GetFirstChild();
         child;
         child = child->GetNextSibling()) {

      if (!child->IsElement()) {
        continue;
      }
      nsCOMPtr<DOMSVGTests> tests(do_QueryInterface(child));
      if (tests) {
        if (tests->PassesConditionalProcessingTests(
                            DOMSVGTests::kIgnoreSystemLanguage)) {
          int32_t languagePreferenceRank =
              tests->GetBestLanguagePreferenceRank(acceptLangs);
          switch (languagePreferenceRank) {
          case 0:
            // best possible match
            return child;
          case -1:
            // not found
            break;
          default:
            if (bestLanguagePreferenceRank == -1 ||
                languagePreferenceRank < bestLanguagePreferenceRank) {
              bestLanguagePreferenceRank = languagePreferenceRank;
              bestChild = child;
            }
            break;
          }
        }
      } else if (!bestChild) {
         bestChild = child;
      }
    }
    return bestChild;
  }

  for (nsIContent* child = nsINode::GetFirstChild();
       child;
       child = child->GetNextSibling()) {
    if (!child->IsElement()) {
      continue;
    }
    nsCOMPtr<DOMSVGTests> tests(do_QueryInterface(child));
    if (!tests || tests->PassesConditionalProcessingTests(&acceptLangs)) {
      return child;
    }
  }
  return nullptr;
}