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++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
++ #include "qplatformaccessibility.h"
++ #include <private/qfactoryloader_p.h>
++ #include "qaccessibleplugin.h"
++ #include "qaccessibleobject.h"
++ #include "qaccessiblebridge.h"
++ #include <QtGui/QGuiApplication>
++
++ #include <QDebug>
++
++ QT_BEGIN_NAMESPACE
++
++ using namespace Qt::StringLiterals;
++
++ #if QT_CONFIG(accessibility)
++
++ /* accessiblebridge plugin discovery stuff */
++ Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, bridgeloader,
++ (QAccessibleBridgeFactoryInterface_iid, "/accessiblebridge"_L1))
++
++ Q_GLOBAL_STATIC(QList<QAccessibleBridge *>, bridges)
++
++ /*!
++ \class QPlatformAccessibility
++ \since 5.0
++ \internal
++ \preliminary
++ \ingroup qpa
++ \ingroup accessibility
++
++ \brief The QPlatformAccessibility class is the base class for
++ integrating accessibility backends
++
++ \sa QAccessible
++ */
++ QPlatformAccessibility::QPlatformAccessibility()
++ {
++ }
++
++ QPlatformAccessibility::~QPlatformAccessibility()
++ {
++ }
++
++ void QPlatformAccessibility::notifyAccessibilityUpdate(QAccessibleEvent *event)
++ {
++ initialize();
++
++ if (!bridges() || bridges()->isEmpty())
++ return;
++
++ for (int i = 0; i < bridges()->size(); ++i)
++ bridges()->at(i)->notifyAccessibilityUpdate(event);
++ }
++
++ void QPlatformAccessibility::setRootObject(QObject *o)
++ {
++ initialize();
++ if (bridges()->isEmpty())
++ return;
++
++ if (!o)
++ return;
++
++ for (int i = 0; i < bridges()->size(); ++i) {
++ QAccessibleInterface *iface = QAccessible::queryAccessibleInterface(o);
++ bridges()->at(i)->setRootObject(iface);
++ }
++ }
++
++ void QPlatformAccessibility::initialize()
++ {
++ static bool isInit = false;
++ if (isInit)
++ return;
++ isInit = true; // ### not atomic
++
++ typedef QMultiMap<int, QString> PluginKeyMap;
++ typedef PluginKeyMap::const_iterator PluginKeyMapConstIterator;
++
++ const PluginKeyMap keyMap = bridgeloader()->keyMap();
++ QAccessibleBridgePlugin *factory = nullptr;
++ int i = -1;
++ const PluginKeyMapConstIterator cend = keyMap.constEnd();
++ for (PluginKeyMapConstIterator it = keyMap.constBegin(); it != cend; ++it) {
++ if (it.key() != i) {
++ i = it.key();
++ factory = qobject_cast<QAccessibleBridgePlugin*>(bridgeloader()->instance(i));
++ }
++ if (factory)
++ if (QAccessibleBridge *bridge = factory->create(it.value()))
++ bridges()->append(bridge);
++ }
++ }
++
++ void QPlatformAccessibility::cleanup()
++ {
++ qDeleteAll(*bridges());
++ }
++
++ void qAccessibleNotifyActivationObservers(bool active); // qaccessible.cpp
++
++ void QPlatformAccessibility::setActive(bool active)
++ {
++ m_active = active;
++
++ // Send activeChanged notifications if the new active status differs from
++ // the notifed one.
++ if ((active && m_activeNotificationState != std::optional<bool>{true}) ||
++ (!active && m_activeNotificationState != std::optional<bool>{false})) {
++ qAccessibleNotifyActivationObservers(active);
++ }
++
++ m_activeNotificationState = active;
++ }
++
++ void QPlatformAccessibility::clearActiveNotificationState()
++ {
++ m_activeNotificationState = std::nullopt;
++ }
++
++ #endif // QT_CONFIG(accessibility)
++
++ QT_END_NAMESPACE