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comparison: accessible/src/windows/msaa/EnumVariant.cpp
accessible/src/windows/msaa/EnumVariant.cpp
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:244d97e2bbd8 |
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim: set ts=2 et sw=2 tw=80: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this file, | |
| 5 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #include "EnumVariant.h" | |
| 8 | |
| 9 using namespace mozilla; | |
| 10 using namespace mozilla::a11y; | |
| 11 | |
| 12 //////////////////////////////////////////////////////////////////////////////// | |
| 13 // ChildrenEnumVariant | |
| 14 //////////////////////////////////////////////////////////////////////////////// | |
| 15 | |
| 16 IMPL_IUNKNOWN_QUERY_HEAD(ChildrenEnumVariant) | |
| 17 IMPL_IUNKNOWN_QUERY_IFACE(IEnumVARIANT); | |
| 18 IMPL_IUNKNOWN_QUERY_IFACE(IUnknown); | |
| 19 IMPL_IUNKNOWN_QUERY_AGGR_COND(mAnchorAcc, !mAnchorAcc->IsDefunct()); | |
| 20 IMPL_IUNKNOWN_QUERY_TAIL | |
| 21 | |
| 22 STDMETHODIMP | |
| 23 ChildrenEnumVariant::Next(ULONG aCount, VARIANT FAR* aItems, | |
| 24 ULONG FAR* aCountFetched) | |
| 25 { | |
| 26 A11Y_TRYBLOCK_BEGIN | |
| 27 | |
| 28 if (!aItems || !aCountFetched) | |
| 29 return E_INVALIDARG; | |
| 30 | |
| 31 *aCountFetched = 0; | |
| 32 | |
| 33 if (mAnchorAcc->IsDefunct() || mAnchorAcc->GetChildAt(mCurIndex) != mCurAcc) | |
| 34 return CO_E_OBJNOTCONNECTED; | |
| 35 | |
| 36 ULONG countFetched = 0; | |
| 37 for (; mCurAcc && countFetched < aCount; countFetched++) { | |
| 38 VariantInit(aItems + countFetched); | |
| 39 aItems[countFetched].pdispVal = AccessibleWrap::NativeAccessible(mCurAcc); | |
| 40 aItems[countFetched].vt = VT_DISPATCH; | |
| 41 | |
| 42 mCurIndex++; | |
| 43 mCurAcc = mAnchorAcc->GetChildAt(mCurIndex); | |
| 44 } | |
| 45 | |
| 46 (*aCountFetched) = countFetched; | |
| 47 | |
| 48 return countFetched < aCount ? S_FALSE : S_OK; | |
| 49 | |
| 50 A11Y_TRYBLOCK_END | |
| 51 } | |
| 52 | |
| 53 STDMETHODIMP | |
| 54 ChildrenEnumVariant::Skip(ULONG aCount) | |
| 55 { | |
| 56 A11Y_TRYBLOCK_BEGIN | |
| 57 | |
| 58 if (mAnchorAcc->IsDefunct() || mAnchorAcc->GetChildAt(mCurIndex) != mCurAcc) | |
| 59 return CO_E_OBJNOTCONNECTED; | |
| 60 | |
| 61 mCurIndex += aCount; | |
| 62 mCurAcc = mAnchorAcc->GetChildAt(mCurIndex); | |
| 63 | |
| 64 return mCurAcc ? S_OK : S_FALSE; | |
| 65 | |
| 66 A11Y_TRYBLOCK_END | |
| 67 } | |
| 68 | |
| 69 STDMETHODIMP | |
| 70 ChildrenEnumVariant::Reset() | |
| 71 { | |
| 72 A11Y_TRYBLOCK_BEGIN | |
| 73 | |
| 74 if (mAnchorAcc->IsDefunct()) | |
| 75 return CO_E_OBJNOTCONNECTED; | |
| 76 | |
| 77 mCurIndex = 0; | |
| 78 mCurAcc = mAnchorAcc->GetChildAt(0); | |
| 79 | |
| 80 return S_OK; | |
| 81 | |
| 82 A11Y_TRYBLOCK_END | |
| 83 } | |
| 84 | |
| 85 STDMETHODIMP | |
| 86 ChildrenEnumVariant::Clone(IEnumVARIANT** aEnumVariant) | |
| 87 { | |
| 88 A11Y_TRYBLOCK_BEGIN | |
| 89 | |
| 90 if (!aEnumVariant) | |
| 91 return E_INVALIDARG; | |
| 92 | |
| 93 *aEnumVariant = new ChildrenEnumVariant(*this); | |
| 94 (*aEnumVariant)->AddRef(); | |
| 95 | |
| 96 return S_OK; | |
| 97 | |
| 98 A11Y_TRYBLOCK_END | |
| 99 } |
