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/* -*- 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/. */
#ifndef mozilla_a11y_EnumVariant_h__
#define mozilla_a11y_EnumVariant_h__
#include "AccessibleWrap.h"
#include "IUnknownImpl.h"
namespace mozilla {
namespace a11y {
/**
* Used to fetch accessible children.
*/
class ChildrenEnumVariant final : public IEnumVARIANT
{
public:
ChildrenEnumVariant(AccessibleWrap* aAnchor) : mAnchorAcc(aAnchor),
mCurAcc(mAnchorAcc->GetChildAt(0)), mCurIndex(0) { }
// IUnknown
DECL_IUNKNOWN
// IEnumVariant
virtual /* [local] */ HRESULT STDMETHODCALLTYPE Next(
/* [in] */ ULONG aCount,
/* [length_is][size_is][out] */ VARIANT* aItems,
/* [out] */ ULONG* aCountFetched);
virtual HRESULT STDMETHODCALLTYPE Skip(
/* [in] */ ULONG aCount);
virtual HRESULT STDMETHODCALLTYPE Reset();
virtual HRESULT STDMETHODCALLTYPE Clone(
/* [out] */ IEnumVARIANT** aEnumVaraint);
private:
ChildrenEnumVariant() = delete;
ChildrenEnumVariant& operator =(const ChildrenEnumVariant&) = delete;
ChildrenEnumVariant(const ChildrenEnumVariant& aEnumVariant) :
mAnchorAcc(aEnumVariant.mAnchorAcc), mCurAcc(aEnumVariant.mCurAcc),
mCurIndex(aEnumVariant.mCurIndex) { }
virtual ~ChildrenEnumVariant() { }
protected:
RefPtr<AccessibleWrap> mAnchorAcc;
Accessible* mCurAcc;
uint32_t mCurIndex;
};
} // a11y namespace
} // mozilla namespace
#endif
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