1 files changed, 112 insertions, 0 deletions
diff --git a/src/plugins/platforms/winrt/uiautomation/qwinrtuiametadatacache.cpp b/src/plugins/platforms/winrt/uiautomation/qwinrtuiametadatacache.cpp
new file mode 100644
index 0000000000..442ff184a8
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+++ b/src/plugins/platforms/winrt/uiautomation/qwinrtuiametadatacache.cpp
@@ -0,0 +1,112 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 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 <QtGui/qtguiglobal.h>
+#if QT_CONFIG(accessibility)
+
+#include "qwinrtuiametadatacache.h"
+#include "qwinrtuiautils.h"
+
+#include <QtCore/QLoggingCategory>
+#include <QtCore/private/qeventdispatcher_winrt_p.h>
+
+QT_BEGIN_NAMESPACE
+
+using namespace QWinRTUiAutomation;
+
+// Private constructor
+QWinRTUiaMetadataCache::QWinRTUiaMetadataCache()
+{
+}
+
+// shared instance
+QWinRTUiaMetadataCache *QWinRTUiaMetadataCache::instance()
+{
+    static QWinRTUiaMetadataCache metadataCache;
+    return &metadataCache;
+}
+
+// Returns the cached metadata associated with the ID, or an instance with default values.
+QSharedPointer<QWinRTUiaControlMetadata> QWinRTUiaMetadataCache::metadataForId(QAccessible::Id id)
+{
+    QSharedPointer<QWinRTUiaControlMetadata> metadata;
+
+    m_mutex.lock();
+    if (m_metadataTable.contains(id))
+        metadata = m_metadataTable[id];
+    else
+        metadata = QSharedPointer<QWinRTUiaControlMetadata>(new QWinRTUiaControlMetadata);
+    m_mutex.unlock();
+    return metadata;
+}
+
+// Caches metadata from the accessibility framework within the main thread.
+bool QWinRTUiaMetadataCache::load(QAccessible::Id id)
+{
+    qCDebug(lcQpaUiAutomation) << __FUNCTION__;
+
+    if (!SUCCEEDED(QEventDispatcherWinRT::runOnMainThread([id]() {
+        QWinRTUiaMetadataCache::instance()->insert(id, QSharedPointer<QWinRTUiaControlMetadata>(new QWinRTUiaControlMetadata(id)));
+        return S_OK;
+    }))) {
+        return false;
+    }
+    return true;
+}
+
+// Inserts metadata in the cache and associates it with an accessibility ID.
+void QWinRTUiaMetadataCache::insert(QAccessible::Id id, const QSharedPointer<QWinRTUiaControlMetadata> &metadata)
+{
+    m_mutex.lock();
+    m_metadataTable[id] = metadata;
+    m_mutex.unlock();
+}
+
+// Removes metadata with a given id from the cache.
+void QWinRTUiaMetadataCache::remove(QAccessible::Id id)
+{
+    m_mutex.lock();
+    m_metadataTable.remove(id);
+    m_mutex.unlock();
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_CONFIG(accessibility)
+