Add Linux Accessibility Bridge

This is a plugin that bridges the QAccessible world
to AT-SPI 2 on Linux.

Change-Id: I7af22621ee6a3cefc723b137b7f227a611cf6641
Reviewed-by: Jan-Arve Sæther <jan-arve.saether@nokia.com>

1 files changed, 92 insertions, 0 deletions

diff --git a/src/platformsupport/linuxaccessibility/cache.cpp b/src/platformsupport/linuxaccessibility/cache.cpp
new file mode 100644
index 0000000000..1fa325720a
--- /dev/null
+++ b/src/platformsupport/linuxaccessibility/cache.cpp
@@ -0,0 +1,92 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include "cache_p.h"
+#include "cache_adaptor.h"
+
+#include "bridge_p.h"
+
+#define QSPI_OBJECT_PATH_CACHE "/org/a11y/atspi/cache"
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QSpiDBusCache
+
+    \brief This class is responsible for the AT-SPI cache interface.
+
+    The idea behind the cache is that starting an application would
+    result in many dbus calls. The way GTK/Gail/ATK work is that
+    they create accessibles for all objects on startup.
+    In order to avoid querying all the objects individually via DBus
+    they get sent by using the GetItems call of the cache.
+
+    Additionally the AddAccessible and RemoveAccessible signals
+    are responsible for adding/removing objects from the cache.
+
+    Currently the Qt bridge chooses to ignore these.
+*/
+
+QSpiDBusCache::QSpiDBusCache(QDBusConnection c, QObject* parent)
+    : QObject(parent)
+{
+    new CacheAdaptor(this);
+    c.registerObject(QLatin1String(QSPI_OBJECT_PATH_CACHE), this, QDBusConnection::ExportAdaptors);
+}
+
+void QSpiDBusCache::emitAddAccessible(const QSpiAccessibleCacheItem& item)
+{
+    emit AddAccessible(item);
+}
+
+void QSpiDBusCache::emitRemoveAccessible(const QSpiObjectReference& item)
+{
+    emit RemoveAccessible(item);
+}
+
+QSpiAccessibleCacheArray QSpiDBusCache::GetItems()
+{
+    QList <QSpiAccessibleCacheItem> cacheArray;
+    return cacheArray;
+}
+
+QT_END_NAMESPACE