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/* -*- 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 "nsGkAtoms.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 DOMNodeIDAndClass = ((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},
{nsGkAtoms::aria_details, nullptr, RelationType::DETAILS,
RelationType::DETAILS_FOR},
{nsGkAtoms::aria_errormessage, nullptr, RelationType::ERRORMSG,
RelationType::ERRORMSG_FOR},
};
// The count of numbers needed to serialize an nsRect. This is used when
// flattening character rects into an array of ints.
constexpr int32_t kNumbersInRect = 4;
} // namespace a11y
} // namespace mozilla
#endif
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