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/****************************************************************************
**
** Copyright (C) 2016 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 "qiosplatformaccessibility.h"
#include <QtGui/QtGui>
#include "qioswindow.h"
QIOSPlatformAccessibility::QIOSPlatformAccessibility()
{}
QIOSPlatformAccessibility::~QIOSPlatformAccessibility()
{}
void invalidateCache(QAccessibleInterface *iface)
{
if (!iface || !iface->isValid()) {
qWarning() << "invalid accessible interface: " << iface;
return;
}
// This will invalidate everything regardless of what window the
// interface belonged to. We might want to revisit this strategy later.
// (Therefore this function still takes the interface as argument)
// It is also responsible for the bug that focus gets temporary lost
// when items get added or removed from the screen
foreach (QWindow *win, QGuiApplication::topLevelWindows()) {
if (win && win->handle()) {
QIOSWindow *window = static_cast<QIOSWindow*>(win->handle());
window->clearAccessibleCache();
}
}
}
void QIOSPlatformAccessibility::notifyAccessibilityUpdate(QAccessibleEvent *event)
{
if (!isActive() || !event->accessibleInterface())
return;
switch (event->type()) {
case QAccessible::ObjectCreated:
case QAccessible::ObjectShow:
case QAccessible::ObjectHide:
case QAccessible::ObjectDestroyed:
invalidateCache(event->accessibleInterface());
break;
default:
break;
}
}
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