accessible/mac/RootAccessibleWrap.mm
author Alexander Surkov <surkov.alexander@gmail.com>
Wed, 02 Mar 2016 09:39:06 -0500
changeset 286389 2449cf975cde24c9b4ecfe3fd3a0560e8405c348
parent 247602 f4b92d3bee3f74525c9be77048fef891ff119657
child 293477 4f9e86886f0f1fb81e723dbe7f9ccce76a6d8d80
permissions -rw-r--r--
Bug 1251897 - DocAccessible constructor doesn't have to take root element as an argument, r=davidb

/* -*- 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 "RootAccessibleWrap.h"

#include "mozDocAccessible.h"

#include "nsCOMPtr.h"
#include "nsObjCExceptions.h"
#include "nsIFrame.h"
#include "nsView.h"
#include "nsIWidget.h"

using namespace mozilla::a11y;

RootAccessibleWrap::
  RootAccessibleWrap(nsIDocument* aDocument, nsIPresShell* aPresShell) :
  RootAccessible(aDocument, aPresShell)
{
}

RootAccessibleWrap::~RootAccessibleWrap()
{
}

Class
RootAccessibleWrap::GetNativeType()
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;

  return [mozRootAccessible class];

  NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
}

void
RootAccessibleWrap::GetNativeWidget(void** aOutView)
{
  nsIFrame *frame = GetFrame();
  if (frame) {
    nsView *view = frame->GetViewExternal();
    if (view) {
      nsIWidget *widget = view->GetWidget();
      if (widget) {
        *aOutView = (void**)widget->GetNativeData (NS_NATIVE_WIDGET);
        NS_ASSERTION (*aOutView,
                      "Couldn't get the native NSView parent we need to connect the accessibility hierarchy!");
      }
    }
  }
}