accessible/base/nsEventShell.cpp
author JerryShih <hshih@mozilla.com>
Thu, 17 Mar 2016 09:07:00 -0400
changeset 289308 516d8328dcb6718d4f0a23d772354ebe2267956a
parent 268184 e8c7dfe727cd970e2c3294934e2927b14143c205
child 291793 9b38a13b6f15cb49cecc606b2f4cb160c9cb9449
permissions -rw-r--r--
Bug 1251593 - Add the thread checking of AddRef() and Release() in RefCounted class. r=froydnj

/* -*- 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 "nsEventShell.h"

#include "nsAccUtils.h"

#include "mozilla/StaticPtr.h"

using namespace mozilla;
using namespace mozilla::a11y;

////////////////////////////////////////////////////////////////////////////////
// nsEventShell
////////////////////////////////////////////////////////////////////////////////

void
nsEventShell::FireEvent(AccEvent* aEvent)
{
  if (!aEvent)
    return;

  Accessible* accessible = aEvent->GetAccessible();
  NS_ENSURE_TRUE_VOID(accessible);

  nsINode* node = accessible->GetNode();
  if (node) {
    sEventTargetNode = node;
    sEventFromUserInput = aEvent->IsFromUserInput();
  }

  accessible->HandleAccEvent(aEvent);

  sEventTargetNode = nullptr;
}

void
nsEventShell::FireEvent(uint32_t aEventType, Accessible* aAccessible,
                        EIsFromUserInput aIsFromUserInput)
{
  NS_ENSURE_TRUE_VOID(aAccessible);

  RefPtr<AccEvent> event = new AccEvent(aEventType, aAccessible,
                                          aIsFromUserInput);

  FireEvent(event);
}

void 
nsEventShell::GetEventAttributes(nsINode *aNode,
                                 nsIPersistentProperties *aAttributes)
{
  if (aNode != sEventTargetNode)
    return;

  nsAccUtils::SetAccAttr(aAttributes, nsGkAtoms::eventFromInput,
                         sEventFromUserInput ? NS_LITERAL_STRING("true") :
                                               NS_LITERAL_STRING("false"));
}

////////////////////////////////////////////////////////////////////////////////
// nsEventShell: private

bool nsEventShell::sEventFromUserInput = false;
StaticRefPtr<nsINode> nsEventShell::sEventTargetNode;