accessible/xpcom/nsAccessibleRelation.cpp
author L. David Baron <dbaron@dbaron.org>
Thu, 11 Oct 2018 10:04:04 +0000
changeset 499519 e816bcd461abb456bad50c9df457d7a0fdcbe83b
parent 440890 26c7003f154637f5965eea708a0518f70cc68655
child 508163 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1498030 [wpt PR 13459] - Sync Mozilla CSS tests as of 2018-10-10, a=testonly Automatic update from web-platform-testsSync Mozilla CSS tests as of https://hg.mozilla.org/mozilla-central/rev/91b4c3687d7563244fbba0f58075779eb89259fb . (#13459) This contains changes from [bug 1495470](https://bugzilla.mozilla.org/show_bug.cgi?id=1495470) by @dholbert, reviewed by me. -- wpt-commits: ad906e0d1ad2225635cde0b676575f84255348cf wpt-pr: 13459

/* -*- 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 "nsAccessibleRelation.h"

#include "Relation.h"
#include "Accessible.h"
#include "xpcAccessibleDocument.h"

#include "nsArrayUtils.h"
#include "nsComponentManagerUtils.h"

using namespace mozilla::a11y;

nsAccessibleRelation::nsAccessibleRelation(uint32_t aType,
                                           Relation* aRel) :
  mType(aType)
{
  mTargets = do_CreateInstance(NS_ARRAY_CONTRACTID);
  Accessible* targetAcc = nullptr;
  while ((targetAcc = aRel->Next()))
    mTargets->AppendElement(static_cast<nsIAccessible*>(ToXPC(targetAcc)));
}

nsAccessibleRelation::nsAccessibleRelation(uint32_t aType,
                                           const nsTArray<ProxyAccessible*>* aTargets) :
  mType(aType)
{
  mTargets = do_CreateInstance(NS_ARRAY_CONTRACTID);
  for (uint32_t idx = 0; idx < aTargets->Length(); ++idx) {
    mTargets->AppendElement(
      static_cast<nsIAccessible*>(ToXPC(aTargets->ElementAt(idx))));
  }
}

nsAccessibleRelation::~nsAccessibleRelation()
{
}

// nsISupports
NS_IMPL_ISUPPORTS(nsAccessibleRelation, nsIAccessibleRelation)

// nsIAccessibleRelation
NS_IMETHODIMP
nsAccessibleRelation::GetRelationType(uint32_t *aType)
{
  NS_ENSURE_ARG_POINTER(aType);
  *aType = mType;
  return NS_OK;
}

NS_IMETHODIMP
nsAccessibleRelation::GetTargetsCount(uint32_t *aCount)
{
  NS_ENSURE_ARG_POINTER(aCount);
  *aCount = 0;
  return mTargets->GetLength(aCount);
}

NS_IMETHODIMP
nsAccessibleRelation::GetTarget(uint32_t aIndex, nsIAccessible **aTarget)
{
  NS_ENSURE_ARG_POINTER(aTarget);
  nsresult rv = NS_OK;
  nsCOMPtr<nsIAccessible> target = do_QueryElementAt(mTargets, aIndex, &rv);
  target.forget(aTarget);
  return rv;
}

NS_IMETHODIMP
nsAccessibleRelation::GetTargets(nsIArray **aTargets)
{
  NS_ENSURE_ARG_POINTER(aTargets);
  NS_ADDREF(*aTargets = mTargets);
  return NS_OK;
}