author Mark Banner <>
Wed, 07 Feb 2018 16:01:29 +0000
changeset 455301 098f795537450afd8e7a3040247613cf570a859b
parent 447214 da4106e06989ab988a2ed112920aaad5aec0e670
child 477597 2fa69e8f19b92e2bc11de7cbea3300cdab6a56c4
permissions -rw-r--r--
Bug 1436389 - Upgrade ESLint to version 4.17.0. r=mossop MozReview-Commit-ID: I4KBELxhBlM

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

#ifndef mozilla_a11y_Platform_h
#define mozilla_a11y_Platform_h

#include <stdint.h>
#include "nsStringFwd.h"

namespace mozilla {
namespace a11y {

class ProxyAccessible;

enum EPlatformDisabledState {
  ePlatformIsForceEnabled = -1,
  ePlatformIsEnabled = 0,
  ePlatformIsDisabled = 1

 * Return the platform disabled state.
EPlatformDisabledState PlatformDisabledState();

 * Perform initialization that should be done as soon as possible, in order
 * to minimize startup time.
 * XXX: this function and the next defined in ApplicationAccessibleWrap.cpp
void PreInit();

#if defined(MOZ_ACCESSIBILITY_ATK) || defined(XP_MACOSX)
 * Is platform accessibility enabled.
 * Only used on linux with atk and MacOS for now.
bool ShouldA11yBeEnabled();

#if defined(XP_WIN)
 * Do we have AccessibleHandler.dll registered.
bool IsHandlerRegistered();

 * Name of platform service that instantiated accessibility
void SetInstantiator(const uint32_t aInstantiatorPid);
bool GetInstantiator(nsIFile** aOutInstantiator);

 * Called to initialize platform specific accessibility support.
 * Note this is called after internal accessibility support is initialized.
void PlatformInit();

 * Shutdown platform accessibility.
 * Note this is called before internal accessibility support is shutdown.
void PlatformShutdown();

 * called when a new ProxyAccessible is created, so the platform may setup a
 * wrapper for it, or take other action.
void ProxyCreated(ProxyAccessible* aProxy, uint32_t aInterfaces);

 * Called just before a ProxyAccessible is destroyed so its wrapper can be
 * disposed of and other action taken.
void ProxyDestroyed(ProxyAccessible*);

 * Callied when an event is fired on a proxied accessible.
void ProxyEvent(ProxyAccessible* aTarget, uint32_t aEventType);
void ProxyStateChangeEvent(ProxyAccessible* aTarget, uint64_t aState,
                           bool aEnabled);

#if defined(XP_WIN)
void ProxyFocusEvent(ProxyAccessible* aTarget,
                     const LayoutDeviceIntRect& aCaretRect);
void ProxyCaretMoveEvent(ProxyAccessible* aTarget,
                         const LayoutDeviceIntRect& aCaretRect);
void ProxyCaretMoveEvent(ProxyAccessible* aTarget, int32_t aOffset);
void ProxyTextChangeEvent(ProxyAccessible* aTarget, const nsString& aStr,
                          int32_t aStart, uint32_t aLen, bool aIsInsert,
                          bool aFromUser);
void ProxyShowHideEvent(ProxyAccessible* aTarget, ProxyAccessible* aParent,
                        bool aInsert, bool aFromUser);
void ProxySelectionEvent(ProxyAccessible* aTarget, ProxyAccessible* aWidget,
                         uint32_t aType);
} // namespace a11y
} // namespace mozilla

#endif // mozilla_a11y_Platform_h