1 files changed, 196 insertions, 0 deletions
diff --git a/forms/source/component/EventThread.cxx b/forms/source/component/EventThread.cxx
new file mode 100644
index 000000000..0b38e33f7
--- /dev/null
+++ b/forms/source/component/EventThread.cxx
@@ -0,0 +1,196 @@
+/* -*- 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 "EventThread.hxx"
+#include <comphelper/guarding.hxx>
+#include <tools/debug.hxx>
+#include <cppuhelper/queryinterface.hxx>
+
+#include <memory>
+
+namespace frm
+{
+
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::awt;
+using namespace ::com::sun::star::lang;
+
+OComponentEventThread::OComponentEventThread( ::cppu::OComponentHelper* pCompImpl ) :
+    m_xComp( pCompImpl )
+{
+
+    osl_atomic_increment(&m_refCount);
+
+    // and add us at the Control
+    {
+        Reference<XEventListener> xEvtLstnr = static_cast<XEventListener*>(this);
+        m_xComp->addEventListener( xEvtLstnr );
+    }
+
+    osl_atomic_decrement(&m_refCount);
+}
+
+OComponentEventThread::~OComponentEventThread()
+{
+
+    DBG_ASSERT( m_aEvents.empty(),
+        "OComponentEventThread::~OComponentEventThread: Didn't call dispose?" );
+
+    impl_clearEventQueue();
+}
+
+Any SAL_CALL OComponentEventThread::queryInterface(const Type& _rType)
+{
+    Any aReturn = OWeakObject::queryInterface(_rType);
+
+    if (!aReturn.hasValue())
+        aReturn = ::cppu::queryInterface(_rType,
+            static_cast<XEventListener*>(this)
+        );
+
+    return aReturn;
+}
+
+void OComponentEventThread::impl_clearEventQueue()
+{
+    m_aEvents.clear();
+    m_aControls.clear();
+    m_aFlags.clear();
+}
+
+void OComponentEventThread::disposing( const EventObject& evt )
+{
+    if( evt.Source != static_cast<XWeak*>(m_xComp.get()) )
+        return;
+
+    ::osl::MutexGuard aGuard( m_aMutex );
+
+    // Remove EventListener
+    Reference<XEventListener>  xEvtLstnr = static_cast<XEventListener*>(this);
+    m_xComp->removeEventListener( xEvtLstnr );
+
+    // Clear EventQueue
+    impl_clearEventQueue();
+
+    // Free the Control and set pCompImpl to 0,
+    // so that the thread knows, that it should terminate.
+    m_xComp.clear();
+
+    // Wake up the thread and terminate
+    m_aCond.set();
+    terminate();
+}
+
+void OComponentEventThread::addEvent( std::unique_ptr<EventObject> _pEvt )
+{
+    Reference<XControl>  xTmp;
+    addEvent( std::move(_pEvt), xTmp );
+}
+
+void OComponentEventThread::addEvent( std::unique_ptr<EventObject> _pEvt,
+                                   const Reference<XControl>& rControl,
+                                   bool bFlag )
+{
+    ::osl::MutexGuard aGuard( m_aMutex );
+
+    // Put data into the queue
+    m_aEvents.push_back( std::move( _pEvt ) );
+
+    Reference<XWeak>        xWeakControl(rControl, UNO_QUERY);
+    Reference<XAdapter> xControlAdapter = xWeakControl.is() ? xWeakControl->queryAdapter() : Reference<XAdapter>();
+    m_aControls.push_back( xControlAdapter );
+
+    m_aFlags.push_back( bFlag );
+
+    // Wake up thread
+    m_aCond.set();
+}
+
+void SAL_CALL OComponentEventThread::onTerminated()
+{
+    OComponentEventThread_TBASE::onTerminated();
+
+    release( );
+}
+
+void OComponentEventThread::run()
+{
+    osl_setThreadName("frm::OComponentEventThread");
+
+    acquire( );
+
+    // Hold on to ourselves, so that we're not deleted if a dispose is called at some point in time
+    css::uno::Reference<css::uno::XInterface> xThis(static_cast<XWeak*>(this));
+
+    do
+    {
+        ::osl::MutexGuard aGuard(m_aMutex);
+
+        while( !m_aEvents.empty() )
+        {
+            // Get the Control and hold on to it so that it cannot be deleted during actionPerformed
+            rtl::Reference<::cppu::OComponentHelper> xComp = m_xComp;
+
+            ThreadEvents::iterator firstEvent( m_aEvents.begin() );
+            std::unique_ptr<EventObject> pEvt = std::move(*firstEvent);
+            m_aEvents.erase( firstEvent );
+
+            ThreadObjects::iterator firstControl( m_aControls.begin() );
+            Reference<XAdapter> xControlAdapter = *firstControl;
+            m_aControls.erase( firstControl );
+
+            auto firstFlag( m_aFlags.begin() );
+            bool bFlag = *firstFlag;
+            m_aFlags.erase( firstFlag );
+
+            {
+                MutexRelease aReleaseOnce(m_aMutex);
+                // Because a queryHardRef can throw an Exception, it should not be called when
+                // the mutex is locked.
+                Reference<XControl>  xControl;
+                if ( xControlAdapter.is() )
+                    xControl.set(
+                        xControlAdapter->queryAdapted(), css::uno::UNO_QUERY);
+
+                if( xComp.is() )
+                    processEvent( xComp.get(), pEvt.get(), xControl, bFlag );
+            }
+        }
+
+        // After a Dispose, we do not know the Control anymore.
+        // Thus, we must not wait either.
+        if( !m_xComp.is() )
+            return;
+
+        // Reset waiting condition
+        m_aCond.reset();
+        {
+            MutexRelease aReleaseOnce(m_aMutex);
+            // And wait ... if, in the meantime, an Event came in after all
+            m_aCond.wait();
+        }
+    }
+    while( true );
+}
+
+
+}   // namespace frm
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */