michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim: set ts=2 et sw=2 tw=80: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef mozilla_a11y_EnumVariant_h__
michael@0: #define mozilla_a11y_EnumVariant_h__
michael@0: 
michael@0: #include "AccessibleWrap.h"
michael@0: #include "IUnknownImpl.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace a11y {
michael@0: 
michael@0: /**
michael@0:  * Used to fetch accessible children.
michael@0:  */
michael@0: class ChildrenEnumVariant MOZ_FINAL : public IEnumVARIANT
michael@0: {
michael@0: public:
michael@0:   ChildrenEnumVariant(AccessibleWrap* aAnchor) : mAnchorAcc(aAnchor),
michael@0:     mCurAcc(mAnchorAcc->GetChildAt(0)), mCurIndex(0) { }
michael@0: 
michael@0:   // IUnknown
michael@0:   DECL_IUNKNOWN
michael@0: 
michael@0:   // IEnumVariant
michael@0:   virtual /* [local] */ HRESULT STDMETHODCALLTYPE Next(
michael@0:     /* [in] */ ULONG aCount,
michael@0:     /* [length_is][size_is][out] */ VARIANT* aItems,
michael@0:     /* [out] */ ULONG* aCountFetched);
michael@0: 
michael@0:   virtual HRESULT STDMETHODCALLTYPE Skip(
michael@0:     /* [in] */ ULONG aCount);
michael@0: 
michael@0:   virtual HRESULT STDMETHODCALLTYPE Reset();
michael@0: 
michael@0:   virtual HRESULT STDMETHODCALLTYPE Clone(
michael@0:     /* [out] */ IEnumVARIANT** aEnumVaraint);
michael@0: 
michael@0: private:
michael@0:   ChildrenEnumVariant() MOZ_DELETE;
michael@0:   ChildrenEnumVariant& operator =(const ChildrenEnumVariant&) MOZ_DELETE;
michael@0: 
michael@0:   ChildrenEnumVariant(const ChildrenEnumVariant& aEnumVariant) :
michael@0:     mAnchorAcc(aEnumVariant.mAnchorAcc), mCurAcc(aEnumVariant.mCurAcc),
michael@0:     mCurIndex(aEnumVariant.mCurIndex) { }
michael@0:   virtual ~ChildrenEnumVariant() { }
michael@0: 
michael@0: protected:
michael@0:   nsRefPtr<AccessibleWrap> mAnchorAcc;
michael@0:   Accessible* mCurAcc;
michael@0:   uint32_t mCurIndex;
michael@0: };
michael@0: 
michael@0: } // a11y namespace
michael@0: } // mozilla namespace
michael@0: 
michael@0: #endif