/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* 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 "IUnknownImpl.h"
#include "MsaaAccessible.h"
namespace mozilla {
namespace a11y {
/**
* Used to fetch accessible children.
*/
class ChildrenEnumVariant final :
public IEnumVARIANT {
public:
explicit ChildrenEnumVariant(MsaaAccessible* aAnchor)
: mAnchorMsaa(aAnchor),
mCurAcc(mAnchorMsaa->Acc()->ChildAt(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)
: mAnchorMsaa(aEnumVariant.mAnchorMsaa),
mCurAcc(aEnumVariant.mCurAcc),
mCurIndex(aEnumVariant.mCurIndex) {}
virtual ~ChildrenEnumVariant() {}
protected:
RefPtr<MsaaAccessible> mAnchorMsaa;
Accessible* mCurAcc;
uint32_t mCurIndex;
};
}
// namespace a11y
}
// namespace mozilla
#endif
