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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" // NOLINT: check-webkit-style has problems with files that do not have primary header
namespace WebCore {
GDBusInterfaceVTable AccessibilityObjectAtspi::s_selectionFunctions = {
// method_call
[](GDBusConnection*, const gchar*, const gchar*, const gchar*, const gchar* methodName, GVariant* parameters, GDBusMethodInvocation* invocation, gpointer userData) {
auto atspiObject = Ref { *static_cast<AccessibilityObjectAtspi*>(userData) };
atspiObject->updateBackingStore();
if (!g_strcmp0(methodName, "GetSelectedChild")) {
int index;
g_variant_get(parameters, "(i)", &index);
auto* child = index >= 0 ? atspiObject->selectedChild(index) : nullptr;
g_dbus_method_invocation_return_value(invocation, g_variant_new("(@(so))", child ? child->reference() : AccessibilityAtspi::singleton().nullReference()));
} else if (!g_strcmp0(methodName, "SelectChild")) {
int index;
g_variant_get(parameters, "(i)", &index);
g_dbus_method_invocation_return_value(invocation, g_variant_new("(b)", index >= 0 ? atspiObject->setChildSelected(index, true) : FALSE));
} else if (!g_strcmp0(methodName, "DeselectSelectedChild")) {
int index;
g_variant_get(parameters, "(i)", &index);
g_dbus_method_invocation_return_value(invocation, g_variant_new("(b)", index >= 0 ? atspiObject->deselectSelectedChild(index) : FALSE));
} else if (!g_strcmp0(methodName, "IsChildSelected")) {
int index;
g_variant_get(parameters, "(i)", &index);
g_dbus_method_invocation_return_value(invocation, g_variant_new("(b)", index >= 0 ? atspiObject->isChildSelected(index) : FALSE));
} else if (!g_strcmp0(methodName, "SelectAll"))
g_dbus_method_invocation_return_value(invocation, g_variant_new("(b)", atspiObject->selectAll()));
else if (!g_strcmp0(methodName, "ClearSelection"))
g_dbus_method_invocation_return_value(invocation, g_variant_new("(b)", atspiObject->clearSelection()));
else if (!g_strcmp0(methodName, "DeselectChild")) {
int index;
g_variant_get(parameters, "(i)", &index);
g_dbus_method_invocation_return_value(invocation, g_variant_new("(b)", index >= 0 ? atspiObject->setChildSelected(index, false) : FALSE));
}
},
// 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, "NSelectedChildren"))
return g_variant_new_int32(atspiObject->selectionCount());
g_set_error(error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, "Unknown property '%s'", propertyName);
return nullptr;
},
// set_property,
nullptr,
// padding
{ nullptr }
};
unsigned AccessibilityObjectAtspi::selectionCount() const
{
if (!m_coreObject)
return 0;
return m_coreObject->selectedChildren().size();
}
AccessibilityObjectAtspi* AccessibilityObjectAtspi::selectedChild(unsigned index) const
{
if (!m_coreObject)
return nullptr;
auto selectedItems = m_coreObject->selectedChildren();
if (index >= selectedItems.size())
return nullptr;
return selectedItems[index]->wrapper();
}
bool AccessibilityObjectAtspi::setChildSelected(unsigned index, bool selected) const
{
if (!m_coreObject)
return false;
const auto& children = m_coreObject->children();
if (index >= children.size())
return false;
if (!children[index]->canSetSelectedAttribute())
return false;
children[index]->setSelected(selected);
return selected ? children[index]->isSelected() : !children[index]->isSelected();
}
bool AccessibilityObjectAtspi::deselectSelectedChild(unsigned index) const
{
if (!m_coreObject)
return false;
auto selectedItems = m_coreObject->selectedChildren();
if (index >= selectedItems.size())
return false;
if (!selectedItems[index]->canSetSelectedAttribute())
return false;
selectedItems[index]->setSelected(false);
return !selectedItems[index]->isSelected();
}
bool AccessibilityObjectAtspi::isChildSelected(unsigned index) const
{
if (!m_coreObject)
return false;
const auto& children = m_coreObject->children();
if (index >= children.size())
return false;
return children[index]->isSelected();
}
bool AccessibilityObjectAtspi::selectAll() const
{
if (!m_coreObject)
return false;
if (!m_coreObject->isMultiSelectable() || !m_coreObject->canSetSelectedChildren())
return false;
const auto& children = m_coreObject->children();
unsigned selectableChildCount = 0;
for (const auto& child : children) {
if (child->canSetSelectedAttribute())
selectableChildCount++;
}
if (!selectableChildCount)
return false;
m_coreObject->setSelectedChildren(children);
return selectableChildCount == m_coreObject->selectedChildren().size();
}
bool AccessibilityObjectAtspi::clearSelection() const
{
if (!m_coreObject)
return false;
if (!m_coreObject->canSetSelectedChildren())
return false;
m_coreObject->setSelectedChildren({ });
return m_coreObject->selectedChildren().isEmpty();
}
void AccessibilityObjectAtspi::selectionChanged()
{
// selectionChanged can be called multiple times by WebCore, so ensure we don't
// emit it if the last one happened in the same run loop iteration.
auto* source = g_main_current_source();
int64_t sourceTime = source ? g_source_get_time(source) : -1;
if (sourceTime <= m_lastSelectionChangedTime)
return;
m_lastSelectionChangedTime = sourceTime;
AccessibilityAtspi::singleton().selectionChanged(*this);
}
} // namespace WebCore
#endif // USE(ATSPI)
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