1 files changed, 107 insertions, 0 deletions
diff --git a/sc/source/ui/Accessibility/DrawModelBroadcaster.cxx b/sc/source/ui/Accessibility/DrawModelBroadcaster.cxx
new file mode 100644
index 000000000..c181656fe
--- /dev/null
+++ b/sc/source/ui/Accessibility/DrawModelBroadcaster.cxx
@@ -0,0 +1,107 @@
+/* -*- 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 <DrawModelBroadcaster.hxx>
+#include <svx/svdmodel.hxx>
+#include <svx/unomod.hxx>
+#include <svx/svdobj.hxx>
+
+using namespace ::com::sun::star;
+
+ScDrawModelBroadcaster::ScDrawModelBroadcaster( SdrModel *pDrawModel ) :
+    mpDrawModel( pDrawModel )
+{
+    if (mpDrawModel)
+        StartListening( *mpDrawModel );
+}
+
+ScDrawModelBroadcaster::~ScDrawModelBroadcaster()
+{
+    if (mpDrawModel)
+        EndListening( *mpDrawModel );
+}
+
+void SAL_CALL ScDrawModelBroadcaster::addEventListener( const uno::Reference< document::XEventListener >& xListener )
+{
+    std::unique_lock aGuard(maListenerMutex);
+    maEventListeners.addInterface( aGuard, xListener );
+}
+
+void SAL_CALL ScDrawModelBroadcaster::removeEventListener( const uno::Reference< document::XEventListener >& xListener )
+{
+    std::unique_lock aGuard(maListenerMutex);
+    maEventListeners.removeInterface( aGuard, xListener );
+}
+
+void SAL_CALL ScDrawModelBroadcaster::addShapeEventListener(
+                const css::uno::Reference< css::drawing::XShape >& xShape,
+                const uno::Reference< document::XShapeEventListener >& xListener )
+{
+    assert(xShape.is() && "no shape?");
+    std::scoped_lock aGuard(maListenerMutex);
+    auto rv = maShapeListeners.emplace(xShape, xListener);
+    assert(rv.second && "duplicate listener?");
+    (void)rv;
+}
+
+void SAL_CALL ScDrawModelBroadcaster::removeShapeEventListener(
+                const css::uno::Reference< css::drawing::XShape >& xShape,
+                const uno::Reference< document::XShapeEventListener >& xListener )
+{
+    std::scoped_lock aGuard(maListenerMutex);
+    auto it = maShapeListeners.find(xShape);
+    if (it != maShapeListeners.end())
+    {
+        assert(it->second == xListener && "removing wrong listener?");
+        (void)xListener;
+        maShapeListeners.erase(it);
+    }
+}
+
+void ScDrawModelBroadcaster::Notify( SfxBroadcaster&,
+        const SfxHint& rHint )
+{
+    if (rHint.GetId() != SfxHintId::ThisIsAnSdrHint)
+        return;
+    const SdrHint* pSdrHint = static_cast<const SdrHint*>(&rHint);
+
+    document::EventObject aEvent;
+    if( !SvxUnoDrawMSFactory::createEvent( mpDrawModel, pSdrHint, aEvent ) )
+        return;
+
+    std::unique_lock aGuard(maListenerMutex);
+    maEventListeners.forEach(aGuard,
+        [&aEvent](const css::uno::Reference<document::XEventListener>& xListener)
+        {
+            xListener->notifyEvent(aEvent);
+        }
+    );
+
+    // right now, we're only handling the specific event necessary to fix this performance problem
+    if (pSdrHint->GetKind() == SdrHintKind::ObjectChange)
+    {
+        auto pSdrObject = const_cast<SdrObject*>(pSdrHint->GetObject());
+        uno::Reference<drawing::XShape> xShape(pSdrObject->getUnoShape(), uno::UNO_QUERY);
+        auto it = maShapeListeners.find(xShape);
+        if (it != maShapeListeners.end())
+            it->second->notifyShapeEvent(aEvent);
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */