60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_a11y_EnumVariant_h__
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#define mozilla_a11y_EnumVariant_h__
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#include "AccessibleWrap.h"
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#include "IUnknownImpl.h"
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namespace mozilla {
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namespace a11y {
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/**
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* Used to fetch accessible children.
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*/
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class ChildrenEnumVariant final : public IEnumVARIANT
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{
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public:
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ChildrenEnumVariant(AccessibleWrap* aAnchor) : mAnchorAcc(aAnchor),
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mCurAcc(mAnchorAcc->GetChildAt(0)), mCurIndex(0) { }
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// IUnknown
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DECL_IUNKNOWN
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// IEnumVariant
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virtual /* [local] */ HRESULT STDMETHODCALLTYPE Next(
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/* [in] */ ULONG aCount,
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/* [length_is][size_is][out] */ VARIANT* aItems,
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/* [out] */ ULONG* aCountFetched);
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virtual HRESULT STDMETHODCALLTYPE Skip(
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/* [in] */ ULONG aCount);
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virtual HRESULT STDMETHODCALLTYPE Reset();
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virtual HRESULT STDMETHODCALLTYPE Clone(
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/* [out] */ IEnumVARIANT** aEnumVaraint);
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private:
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ChildrenEnumVariant() = delete;
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ChildrenEnumVariant& operator =(const ChildrenEnumVariant&) = delete;
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ChildrenEnumVariant(const ChildrenEnumVariant& aEnumVariant) :
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mAnchorAcc(aEnumVariant.mAnchorAcc), mCurAcc(aEnumVariant.mCurAcc),
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mCurIndex(aEnumVariant.mCurIndex) { }
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virtual ~ChildrenEnumVariant() { }
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protected:
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RefPtr<AccessibleWrap> mAnchorAcc;
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Accessible* mCurAcc;
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uint32_t mCurIndex;
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};
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} // a11y namespace
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} // mozilla namespace
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#endif
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