1 files changed, 122 insertions, 0 deletions
diff --git a/toolkit/source/awt/asynccallback.cxx b/toolkit/source/awt/asynccallback.cxx
new file mode 100644
index 0000000000..f6804d9c23
--- /dev/null
+++ b/toolkit/source/awt/asynccallback.cxx
@@ -0,0 +1,122 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <utility>
+#include <vcl/svapp.hxx>
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/supportsservice.hxx>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <com/sun/star/awt/XRequestCallback.hpp>
+
+/// anonymous implementation namespace
+namespace {
+
+class AsyncCallback:
+    public ::cppu::WeakImplHelper<
+        css::lang::XServiceInfo,
+        css::awt::XRequestCallback>
+{
+public:
+    AsyncCallback() {}
+    AsyncCallback(const AsyncCallback&) = delete;
+    AsyncCallback& operator=(const AsyncCallback&) = delete;
+
+    // css::lang::XServiceInfo:
+    virtual OUString SAL_CALL getImplementationName() override;
+    virtual sal_Bool SAL_CALL supportsService(const OUString & ServiceName) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
+
+    // css::awt::XRequestCallback:
+    virtual void SAL_CALL addCallback(const css::uno::Reference< css::awt::XCallback > & xCallback, const css::uno::Any & aData) override;
+
+private:
+
+    struct CallbackData
+    {
+        CallbackData( css::uno::Reference< css::awt::XCallback > _xCallback, css::uno::Any aAny ) :
+            xCallback(std::move( _xCallback )), aData(std::move( aAny )) {}
+
+        css::uno::Reference< css::awt::XCallback > xCallback;
+        css::uno::Any                              aData;
+    };
+
+    DECL_STATIC_LINK( AsyncCallback, Notify_Impl, void*, void );
+
+    virtual ~AsyncCallback() override {}
+};
+
+// com.sun.star.uno.XServiceInfo:
+OUString SAL_CALL AsyncCallback::getImplementationName()
+{
+    return "com.sun.star.awt.comp.AsyncCallback";
+}
+
+sal_Bool SAL_CALL AsyncCallback::supportsService(OUString const & serviceName)
+{
+    return cppu::supportsService(this, serviceName);
+}
+
+css::uno::Sequence< OUString > SAL_CALL AsyncCallback::getSupportedServiceNames()
+{
+    return { "com.sun.star.awt.AsyncCallback" };
+}
+
+// css::awt::XRequestCallback:
+void SAL_CALL AsyncCallback::addCallback(const css::uno::Reference< css::awt::XCallback > & xCallback, const css::uno::Any & aData)
+{
+    if ( Application::IsInMain() )
+    {
+        // NOTE: We don't need SolarMutexGuard here as Application::PostUserEvent is thread-safe
+        CallbackData* pCallbackData = new CallbackData( xCallback, aData );
+        Application::PostUserEvent( LINK( this, AsyncCallback, Notify_Impl ), pCallbackData );
+    }
+}
+
+// private asynchronous link to call reference to the callback object
+IMPL_STATIC_LINK( AsyncCallback, Notify_Impl, void*, p, void )
+{
+    CallbackData* pCallbackData = static_cast<CallbackData*>(p);
+    try
+    {
+        // Asynchronous execution
+        // Check pointer and reference before!
+        if ( pCallbackData && pCallbackData->xCallback.is() )
+            pCallbackData->xCallback->notify( pCallbackData->aData );
+    }
+    catch ( css::uno::Exception& )
+    {
+    }
+
+    delete pCallbackData;
+}
+
+} // closing anonymous implementation namespace
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
+com_sun_star_awt_comp_AsyncCallback_get_implementation(
+    css::uno::XComponentContext *,
+    css::uno::Sequence<css::uno::Any> const &)
+{
+    return cppu::acquire(new AsyncCallback());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */