зеркало из https://github.com/mozilla/gecko-dev.git
106 строки
2.4 KiB
C++
106 строки
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:expandtab:shiftwidth=2:tabstop=2:
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*/
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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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ia2AccessibleRelation.h"
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#include "Relation.h"
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#include "nsID.h"
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#include "AccessibleRelation_i.c"
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using namespace mozilla::a11y;
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ia2AccessibleRelation::ia2AccessibleRelation(RelationType aType, Relation* aRel) :
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mType(aType)
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{
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Accessible* target = nullptr;
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while ((target = aRel->Next()))
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mTargets.AppendElement(target);
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}
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// IUnknown
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IMPL_IUNKNOWN_QUERY_HEAD(ia2AccessibleRelation)
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IMPL_IUNKNOWN_QUERY_IFACE(IAccessibleRelation)
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IMPL_IUNKNOWN_QUERY_IFACE(IUnknown)
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IMPL_IUNKNOWN_QUERY_TAIL
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// IAccessibleRelation
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STDMETHODIMP
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ia2AccessibleRelation::get_relationType(BSTR* aRelationType)
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{
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if (!aRelationType)
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return E_INVALIDARG;
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*aRelationType = nullptr;
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#define RELATIONTYPE(geckoType, geckoTypeName, atkType, msaaType, ia2Type) \
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case RelationType::geckoType: \
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*aRelationType = ::SysAllocString(ia2Type); \
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break;
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switch (mType) {
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#include "RelationTypeMap.h"
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}
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return *aRelationType ? S_OK : E_OUTOFMEMORY;
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}
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STDMETHODIMP
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ia2AccessibleRelation::get_localizedRelationType(BSTR *aLocalizedRelationType)
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{
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if (!aLocalizedRelationType)
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return E_INVALIDARG;
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*aLocalizedRelationType = nullptr;
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return E_NOTIMPL;
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}
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STDMETHODIMP
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ia2AccessibleRelation::get_nTargets(long *aNTargets)
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{
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if (!aNTargets)
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return E_INVALIDARG;
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*aNTargets = mTargets.Length();
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return S_OK;
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}
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STDMETHODIMP
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ia2AccessibleRelation::get_target(long aTargetIndex, IUnknown **aTarget)
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{
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if (aTargetIndex < 0 || (uint32_t)aTargetIndex >= mTargets.Length() || !aTarget)
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return E_INVALIDARG;
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AccessibleWrap* target =
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static_cast<AccessibleWrap*>(mTargets[aTargetIndex].get());
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*aTarget = static_cast<IAccessible*>(target);
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(*aTarget)->AddRef();
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return S_OK;
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}
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STDMETHODIMP
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ia2AccessibleRelation::get_targets(long aMaxTargets, IUnknown **aTargets,
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long *aNTargets)
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{
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if (!aNTargets || !aTargets)
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return E_INVALIDARG;
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*aNTargets = 0;
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long maxTargets = mTargets.Length();
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if (maxTargets > aMaxTargets)
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maxTargets = aMaxTargets;
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for (long idx = 0; idx < maxTargets; idx++)
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get_target(idx, aTargets + idx);
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*aNTargets = maxTargets;
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return S_OK;
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}
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