src/gui/accessible/qaccessible_unix.cpp
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/accessible/qaccessible_unix.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,134 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qaccessible.h"
+#include "qaccessiblebridge.h"
+
+#ifndef QT_NO_ACCESSIBILITY
+
+#include "qcoreapplication.h"
+#include "qmutex.h"
+#include "qvector.h"
+#include "private/qfactoryloader_p.h"
+
+#include <stdlib.h>
+
+QT_BEGIN_NAMESPACE
+
+#ifndef QT_NO_LIBRARY
+Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,
+    (QAccessibleBridgeFactoryInterface_iid, QLatin1String("/accessiblebridge")))
+#endif
+Q_GLOBAL_STATIC(QVector<QAccessibleBridge *>, bridges)
+static bool isInit = false;
+
+void QAccessible::initialize()
+{
+    if (isInit)
+        return;
+    isInit = true;
+
+    if (qgetenv("QT_ACCESSIBILITY") != "1")
+        return;
+#ifndef QT_NO_LIBRARY
+    const QStringList l = loader()->keys();
+    for (int i = 0; i < l.count(); ++i) {
+        if (QAccessibleBridgeFactoryInterface *factory =
+                qobject_cast<QAccessibleBridgeFactoryInterface*>(loader()->instance(l.at(i)))) {
+            QAccessibleBridge * bridge = factory->create(l.at(i));
+            if (bridge)
+                bridges()->append(bridge);
+        }
+    }
+#endif
+}
+
+void QAccessible::cleanup()
+{
+    qDeleteAll(*bridges());
+}
+
+void QAccessible::updateAccessibility(QObject *o, int who, Event reason)
+{
+    Q_ASSERT(o);
+
+    if (updateHandler) {
+        updateHandler(o, who, reason);
+        return;
+    }
+
+    initialize();
+    if (bridges()->isEmpty())
+        return;
+
+    QAccessibleInterface *iface = QAccessible::queryAccessibleInterface(o);
+    if (!iface)
+        return;
+
+    for (int i = 0; i < bridges()->count(); ++i)
+        bridges()->at(i)->notifyAccessibilityUpdate(reason, iface, who);
+    delete iface;
+}
+
+void QAccessible::setRootObject(QObject *o)
+{
+    if (rootObjectHandler) {
+        rootObjectHandler(o);
+        return;
+    }
+
+    initialize();
+    if (bridges()->isEmpty())
+        return;
+
+    if (!o)
+        return;
+
+    for (int i = 0; i < bridges()->count(); ++i) {
+        QAccessibleInterface *iface = QAccessible::queryAccessibleInterface(o);
+        bridges()->at(i)->setRootObject(iface);
+    }
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_ACCESSIBILITY
+