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/*
* Copyright (C) 2021 Igalia S.L.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "AccessibilityObjectAtspi.h"
#if USE(ATSPI)
#include "AccessibilityAtspi.h"
#include "AccessibilityObject.h"
#include <gio/gio.h>
namespace WebCore {
GDBusInterfaceVTable AccessibilityObjectAtspi::s_valueFunctions = {
// method_call
nullptr,
// get_property
[](GDBusConnection*, const gchar*, const gchar*, const gchar*, const gchar* propertyName, GError** error, gpointer userData) -> GVariant* {
auto atspiObject = Ref { *static_cast<AccessibilityObjectAtspi*>(userData) };
atspiObject->updateBackingStore();
if (!g_strcmp0(propertyName, "CurrentValue"))
return g_variant_new_double(atspiObject->currentValue());
if (!g_strcmp0(propertyName, "MinimumValue"))
return g_variant_new_double(atspiObject->minimumValue());
if (!g_strcmp0(propertyName, "MaximumValue"))
return g_variant_new_double(atspiObject->maximumValue());
if (!g_strcmp0(propertyName, "MinimumIncrement"))
return g_variant_new_double(atspiObject->minimumIncrement());
g_set_error(error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, "Unknown property '%s'", propertyName);
return nullptr;
},
// set_property,
[](GDBusConnection*, const gchar*, const gchar*, const gchar*, const gchar* propertyName, GVariant* propertyValue, GError** error, gpointer userData) -> gboolean {
auto atspiObject = Ref { *static_cast<AccessibilityObjectAtspi*>(userData) };
atspiObject->updateBackingStore();
if (!g_strcmp0(propertyName, "CurrentValue"))
return atspiObject->setCurrentValue(g_variant_get_double(propertyValue));
g_set_error(error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, "Unknown property '%s'", propertyName);
return FALSE;
},
// padding
{ nullptr }
};
double AccessibilityObjectAtspi::currentValue() const
{
return m_coreObject ? m_coreObject->valueForRange() : 0;
}
bool AccessibilityObjectAtspi::setCurrentValue(double value)
{
if (!m_coreObject)
return false;
if (!m_coreObject->canSetValueAttribute())
return false;
if (m_coreObject->canSetNumericValue())
return m_coreObject->setValue(value);
return m_coreObject->setValue(String::numberToStringFixedPrecision(value));
}
double AccessibilityObjectAtspi::minimumValue() const
{
return m_coreObject ? m_coreObject->minValueForRange() : 0;
}
double AccessibilityObjectAtspi::maximumValue() const
{
return m_coreObject ? m_coreObject->maxValueForRange() : 0;
}
double AccessibilityObjectAtspi::minimumIncrement() const
{
if (!m_coreObject)
return 0;
auto stepAttribute = static_cast<AccessibilityObject*>(m_coreObject.get())->getAttribute(HTMLNames::stepAttr);
if (!stepAttribute.isEmpty())
return stepAttribute.toFloat();
// If 'step' attribute is not defined, WebCore assumes a 5% of the range between
// minimum and maximum values. Implicit value of step should be one or larger.
float step = (m_coreObject->maxValueForRange() - m_coreObject->minValueForRange()) * 0.05;
return step < 1 ? 1 : step;
}
void AccessibilityObjectAtspi::valueChanged(double value)
{
AccessibilityAtspi::singleton().valueChanged(*this, value);
}
} // namespace WebCore
#endif // USE(ATSPI)
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