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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore/QtConfig>
#ifndef QT_NO_ACCESSIBILITY
#include "qwindowsuiavalueprovider.h"
#include "qwindowsuiautils.h"
#include "qwindowscontext.h"
#include <QtGui/QAccessible>
#include <QtGui/QAccessibleInterface>
#include <QtCore/QDebug>
#include <QtCore/QString>
QT_BEGIN_NAMESPACE
using namespace QWindowsUiAutomation;
QWindowsUiaValueProvider::QWindowsUiaValueProvider(QAccessible::Id id) :
QWindowsUiaBaseProvider(id)
{
}
QWindowsUiaValueProvider::~QWindowsUiaValueProvider()
{
}
// Sets the value associated with the control.
HRESULT STDMETHODCALLTYPE QWindowsUiaValueProvider::SetValue(LPCWSTR val)
{
qCDebug(lcQpaUiAutomation) << __FUNCTION__;
QAccessibleInterface *accessible = accessibleInterface();
if (!accessible)
return UIA_E_ELEMENTNOTAVAILABLE;
// First sets the value as a text.
QString strVal = QString::fromUtf16(reinterpret_cast<const ushort *>(val));
accessible->setText(QAccessible::Value, strVal);
// Then, if the control supports the value interface (range value)
// and the supplied text can be converted to a number, and that number
// lies within the min/max limits, sets it as the control's current (numeric) value.
if (QAccessibleValueInterface *valueInterface = accessible->valueInterface()) {
bool ok = false;
double numval = strVal.toDouble(&ok);
if (ok) {
double minimum = valueInterface->minimumValue().toDouble();
double maximum = valueInterface->maximumValue().toDouble();
if ((numval >= minimum) && (numval <= maximum)) {
valueInterface->setCurrentValue(QVariant(numval));
}
}
}
return S_OK;
}
// True for read-only controls.
HRESULT STDMETHODCALLTYPE QWindowsUiaValueProvider::get_IsReadOnly(BOOL *pRetVal)
{
qCDebug(lcQpaUiAutomation) << __FUNCTION__;
if (!pRetVal)
return E_INVALIDARG;
*pRetVal = FALSE;
QAccessibleInterface *accessible = accessibleInterface();
if (!accessible)
return UIA_E_ELEMENTNOTAVAILABLE;
*pRetVal = accessible->state().readOnly;
return S_OK;
}
// Returns the value in text form.
HRESULT STDMETHODCALLTYPE QWindowsUiaValueProvider::get_Value(BSTR *pRetVal)
{
qCDebug(lcQpaUiAutomation) << __FUNCTION__;
if (!pRetVal)
return E_INVALIDARG;
*pRetVal = nullptr;
QAccessibleInterface *accessible = accessibleInterface();
if (!accessible)
return UIA_E_ELEMENTNOTAVAILABLE;
*pRetVal = bStrFromQString(accessible->text(QAccessible::Value));
return S_OK;
}
QT_END_NAMESPACE
#endif // QT_NO_ACCESSIBILITY
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