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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /accessible/windows/msaa/EnumVariant.cpp | |
parent | Initial commit. (diff) | |
download | firefox-esr-upstream.tar.xz firefox-esr-upstream.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'accessible/windows/msaa/EnumVariant.cpp')
-rw-r--r-- | accessible/windows/msaa/EnumVariant.cpp | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/accessible/windows/msaa/EnumVariant.cpp b/accessible/windows/msaa/EnumVariant.cpp new file mode 100644 index 0000000000..866e8f69a9 --- /dev/null +++ b/accessible/windows/msaa/EnumVariant.cpp @@ -0,0 +1,90 @@ +/* -*- 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/. */ + +#include "EnumVariant.h" + +using namespace mozilla; +using namespace mozilla::a11y; + +//////////////////////////////////////////////////////////////////////////////// +// ChildrenEnumVariant +//////////////////////////////////////////////////////////////////////////////// + +IMPL_IUNKNOWN_QUERY_HEAD(ChildrenEnumVariant) +IMPL_IUNKNOWN_QUERY_IFACE(IEnumVARIANT) +IMPL_IUNKNOWN_QUERY_TAIL_AGGREGATED(mAnchorMsaa) + +STDMETHODIMP +ChildrenEnumVariant::Next(ULONG aCount, VARIANT FAR* aItems, + ULONG FAR* aCountFetched) { + if (!aItems || !aCountFetched) return E_INVALIDARG; + + *aCountFetched = 0; + + Accessible* anchor = mAnchorMsaa->Acc(); + if (!anchor || anchor->ChildAt(mCurIndex) != mCurAcc) { + return CO_E_OBJNOTCONNECTED; + } + + ULONG countFetched = 0; + while (mCurAcc && countFetched < aCount) { + VariantInit(aItems + countFetched); + + IDispatch* accNative = MsaaAccessible::NativeAccessible(mCurAcc); + + ++mCurIndex; + mCurAcc = anchor->ChildAt(mCurIndex); + + // Don't output the accessible and count it as having been fetched unless + // it is non-null + MOZ_ASSERT(accNative); + if (!accNative) { + continue; + } + + aItems[countFetched].pdispVal = accNative; + aItems[countFetched].vt = VT_DISPATCH; + ++countFetched; + } + + (*aCountFetched) = countFetched; + + return countFetched < aCount ? S_FALSE : S_OK; +} + +STDMETHODIMP +ChildrenEnumVariant::Skip(ULONG aCount) { + Accessible* anchor = mAnchorMsaa->Acc(); + if (!anchor || anchor->ChildAt(mCurIndex) != mCurAcc) { + return CO_E_OBJNOTCONNECTED; + } + + mCurIndex += aCount; + mCurAcc = anchor->ChildAt(mCurIndex); + + return mCurAcc ? S_OK : S_FALSE; +} + +STDMETHODIMP +ChildrenEnumVariant::Reset() { + Accessible* anchor = mAnchorMsaa->Acc(); + if (!anchor) return CO_E_OBJNOTCONNECTED; + + mCurIndex = 0; + mCurAcc = anchor->ChildAt(0); + + return S_OK; +} + +STDMETHODIMP +ChildrenEnumVariant::Clone(IEnumVARIANT** aEnumVariant) { + if (!aEnumVariant) return E_INVALIDARG; + + *aEnumVariant = new ChildrenEnumVariant(*this); + (*aEnumVariant)->AddRef(); + + return S_OK; +} |