136 lines
2.9 KiB
C++
136 lines
2.9 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 "ia2AccessibleValue.h"
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#include "AccessibleValue_i.c"
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#include "AccessibleWrap.h"
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#include "Accessible-inl.h"
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#include "IUnknownImpl.h"
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#include "mozilla/FloatingPoint.h"
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using namespace mozilla::a11y;
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// IUnknown
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STDMETHODIMP
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ia2AccessibleValue::QueryInterface(REFIID iid, void** ppv)
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{
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if (!ppv)
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return E_INVALIDARG;
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*ppv = nullptr;
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if (IID_IAccessibleValue == iid) {
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AccessibleWrap* valueAcc = static_cast<AccessibleWrap*>(this);
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if (valueAcc->HasNumericValue()) {
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*ppv = static_cast<IAccessibleValue*>(this);
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valueAcc->AddRef();
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return S_OK;
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}
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return E_NOINTERFACE;
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}
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return E_NOINTERFACE;
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}
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// IAccessibleValue
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STDMETHODIMP
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ia2AccessibleValue::get_currentValue(VARIANT* aCurrentValue)
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{
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if (!aCurrentValue)
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return E_INVALIDARG;
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VariantInit(aCurrentValue);
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AccessibleWrap* valueAcc = static_cast<AccessibleWrap*>(this);
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double currentValue;
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MOZ_ASSERT(!valueAcc->IsProxy());
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if (valueAcc->IsDefunct()) {
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return CO_E_OBJNOTCONNECTED;
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}
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currentValue = valueAcc->CurValue();
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if (IsNaN(currentValue))
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return S_FALSE;
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aCurrentValue->vt = VT_R8;
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aCurrentValue->dblVal = currentValue;
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return S_OK;
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}
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STDMETHODIMP
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ia2AccessibleValue::setCurrentValue(VARIANT aValue)
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{
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if (aValue.vt != VT_R8)
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return E_INVALIDARG;
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AccessibleWrap* valueAcc = static_cast<AccessibleWrap*>(this);
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MOZ_ASSERT(!valueAcc->IsProxy());
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if (valueAcc->IsDefunct())
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return CO_E_OBJNOTCONNECTED;
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return valueAcc->SetCurValue(aValue.dblVal) ? S_OK : E_FAIL;
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}
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STDMETHODIMP
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ia2AccessibleValue::get_maximumValue(VARIANT* aMaximumValue)
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{
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if (!aMaximumValue)
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return E_INVALIDARG;
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VariantInit(aMaximumValue);
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AccessibleWrap* valueAcc = static_cast<AccessibleWrap*>(this);
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double maximumValue;
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MOZ_ASSERT(!valueAcc->IsProxy());
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if (valueAcc->IsDefunct()) {
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return CO_E_OBJNOTCONNECTED;
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}
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maximumValue = valueAcc->MaxValue();
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if (IsNaN(maximumValue))
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return S_FALSE;
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aMaximumValue->vt = VT_R8;
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aMaximumValue->dblVal = maximumValue;
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return S_OK;
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}
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STDMETHODIMP
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ia2AccessibleValue::get_minimumValue(VARIANT* aMinimumValue)
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{
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if (!aMinimumValue)
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return E_INVALIDARG;
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VariantInit(aMinimumValue);
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AccessibleWrap* valueAcc = static_cast<AccessibleWrap*>(this);
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double minimumValue;
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MOZ_ASSERT(!valueAcc->IsProxy());
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if (valueAcc->IsDefunct()) {
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return CO_E_OBJNOTCONNECTED;
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}
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minimumValue = valueAcc->MinValue();
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if (IsNaN(minimumValue))
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return S_FALSE;
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aMinimumValue->vt = VT_R8;
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aMinimumValue->dblVal = minimumValue;
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return S_OK;
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}
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