/* -*- 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;

}