/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set expandtab shiftwidth=2 tabstop=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/. */

#ifndef _CacheConstants_h_
#define _CacheConstants_h_

#include "RelationType.h"

namespace mozilla {
namespace a11y {

class CacheDomain {
 public:
  static constexpr uint64_t NameAndDescription = ((uint64_t)0x1) << 0;
  static constexpr uint64_t Value = ((uint64_t)0x1) << 1;
  static constexpr uint64_t Bounds = ((uint64_t)0x1) << 2;
  static constexpr uint64_t Resolution = ((uint64_t)0x1) << 3;
  static constexpr uint64_t Text = ((uint64_t)0x1) << 4;
  static constexpr uint64_t DOMNodeID = ((uint64_t)0x1) << 5;
  static constexpr uint64_t State = ((uint64_t)0x1) << 6;
  static constexpr uint64_t GroupInfo = ((uint64_t)0x1) << 7;
  static constexpr uint64_t Actions = ((uint64_t)0x1) << 8;
  static constexpr uint64_t Style = ((uint64_t)0x1) << 9;
  static constexpr uint64_t TransformMatrix = ((uint64_t)0x1) << 10;
  static constexpr uint64_t ScrollPosition = ((uint64_t)0x1) << 11;
  static constexpr uint64_t Table = ((uint64_t)0x1) << 12;
  static constexpr uint64_t Spelling = ((uint64_t)0x1) << 13;
  static constexpr uint64_t Viewport = ((uint64_t)0x1) << 14;
  static constexpr uint64_t ARIA = ((uint64_t)0x1) << 15;
  static constexpr uint64_t Relations = ((uint64_t)0x1) << 16;
#ifdef XP_WIN
  // Used for MathML.
  static constexpr uint64_t InnerHTML = ((uint64_t)0x1) << 17;
#endif
  static constexpr uint64_t All = ~((uint64_t)0x0);
};

enum class CacheUpdateType {
  /*
   * An initial cache push of a loaded document or inserted subtree.
   */
  Initial,

  /*
   * An incremental cache push of one or more fields that have changed.
   */
  Update,
};

struct RelationData {
  nsStaticAtom* const mAtom;
  nsStaticAtom* const mValidTag;
  RelationType mType;
  RelationType mReverseType;
};

/**
 * This array of RelationData lists our relation types (explicit and reverse)
 * and the cache attribute atoms that store their targets. Attributes may
 * describe different kinds of relations, depending on the element they
 * originate on. For example, an <output> element's `for` attribute describes a
 * CONTROLLER_FOR relation, while the `for` attribute of a <label> describes a
 * LABEL_FOR relation. To ensure we process these attributes appropriately,
 * RelationData.mValidTag contains the atom for the tag this attribute/relation
 * type pairing is valid on. If the pairing is valid for all tag types, this
 * field is null.
 */
static constexpr RelationData kRelationTypeAtoms[] = {
    {nsGkAtoms::aria_labelledby, nullptr, RelationType::LABELLED_BY,
     RelationType::LABEL_FOR},
    {nsGkAtoms::_for, nsGkAtoms::label, RelationType::LABEL_FOR,
     RelationType::LABELLED_BY},
    {nsGkAtoms::aria_controls, nullptr, RelationType::CONTROLLER_FOR,
     RelationType::CONTROLLED_BY},
    {nsGkAtoms::_for, nsGkAtoms::output, RelationType::CONTROLLED_BY,
     RelationType::CONTROLLER_FOR},
    {nsGkAtoms::aria_describedby, nullptr, RelationType::DESCRIBED_BY,
     RelationType::DESCRIPTION_FOR},
    {nsGkAtoms::aria_flowto, nullptr, RelationType::FLOWS_TO,
     RelationType::FLOWS_FROM},
};

}  // namespace a11y
}  // namespace mozilla

#endif