gecko/accessible/src/xpcom/nsAccessibleRelation.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2012-05-21 04:12:37 -07:00
/* 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 "nsArrayUtils.h"
#include "nsComponentManagerUtils.h"
nsAccessibleRelation::nsAccessibleRelation(PRUint32 aType,
Relation* aRel) :
mType(aType)
{
mTargets = do_CreateInstance(NS_ARRAY_CONTRACTID);
nsIAccessible* targetAcc = nsnull;
while ((targetAcc = aRel->Next()))
mTargets->AppendElement(targetAcc, false);
}
// nsISupports
NS_IMPL_ISUPPORTS1(nsAccessibleRelation, nsIAccessibleRelation)
// nsIAccessibleRelation
NS_IMETHODIMP
nsAccessibleRelation::GetRelationType(PRUint32 *aType)
{
NS_ENSURE_ARG_POINTER(aType);
*aType = mType;
return NS_OK;
}
NS_IMETHODIMP
nsAccessibleRelation::GetTargetsCount(PRUint32 *aCount)
{
NS_ENSURE_ARG_POINTER(aCount);
*aCount = 0;
return mTargets->GetLength(aCount);
}
NS_IMETHODIMP
nsAccessibleRelation::GetTarget(PRUint32 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;
}