1 files changed, 130 insertions, 0 deletions
diff --git a/sfx2/source/sidebar/ContextChangeBroadcaster.cxx b/sfx2/source/sidebar/ContextChangeBroadcaster.cxx
new file mode 100644
index 000000000..8e213e68b
--- /dev/null
+++ b/sfx2/source/sidebar/ContextChangeBroadcaster.cxx
@@ -0,0 +1,130 @@
+/* -*- 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 <sidebar/ContextChangeBroadcaster.hxx>
+#include <vcl/EnumContext.hxx>
+#include <com/sun/star/ui/ContextChangeEventObject.hpp>
+#include <com/sun/star/ui/ContextChangeEventMultiplexer.hpp>
+#include <com/sun/star/frame/ModuleManager.hpp>
+#include <osl/diagnose.h>
+#include <comphelper/lok.hxx>
+#include <comphelper/processfactory.hxx>
+#include <sfx2/lokhelper.hxx>
+#include <sfx2/viewsh.hxx>
+
+using namespace css;
+using namespace css::uno;
+
+namespace sfx2::sidebar {
+
+ContextChangeBroadcaster::ContextChangeBroadcaster()
+    : msContextName(),
+      mbIsBroadcasterEnabled(true)
+{
+}
+
+ContextChangeBroadcaster::~ContextChangeBroadcaster()
+{
+}
+
+void ContextChangeBroadcaster::Initialize (const OUString& rsContextName)
+{
+    msContextName = rsContextName;
+}
+
+void ContextChangeBroadcaster::Activate (const css::uno::Reference<css::frame::XFrame>& rxFrame)
+{
+    if (msContextName.getLength() > 0)
+        BroadcastContextChange(rxFrame, GetModuleName(rxFrame), msContextName);
+}
+
+void ContextChangeBroadcaster::Deactivate (const css::uno::Reference<css::frame::XFrame>& rxFrame)
+{
+    if (msContextName.getLength() > 0)
+    {
+        BroadcastContextChange(
+            rxFrame,
+            GetModuleName(rxFrame),
+            vcl::EnumContext::GetContextName(vcl::EnumContext::Context::Default));
+    }
+}
+
+bool ContextChangeBroadcaster::SetBroadcasterEnabled (const bool bIsEnabled)
+{
+    const bool bWasEnabled (mbIsBroadcasterEnabled);
+    mbIsBroadcasterEnabled = bIsEnabled;
+    return bWasEnabled;
+}
+
+void ContextChangeBroadcaster::BroadcastContextChange (
+    const css::uno::Reference<css::frame::XFrame>& rxFrame,
+    const OUString& rsModuleName,
+    const OUString& rsContextName)
+{
+    if ( ! mbIsBroadcasterEnabled)
+        return;
+
+    if (rsContextName.getLength() == 0)
+        return;
+
+    if ( ! rxFrame.is() || ! rxFrame->getController().is())
+    {
+        // Frame is (probably) being deleted.  Broadcasting context
+        // changes is not necessary anymore.
+        return;
+    }
+
+    // notify the LOK too
+    if (comphelper::LibreOfficeKit::isActive())
+    {
+        if (SfxViewShell* pViewShell = SfxViewShell::Get(rxFrame->getController()))
+            SfxLokHelper::notifyContextChange(pViewShell, rsModuleName, rsContextName);
+    }
+
+    const css::ui::ContextChangeEventObject aEvent(
+        rxFrame->getController(),
+        rsModuleName,
+        rsContextName);
+
+    css::uno::Reference<css::ui::XContextChangeEventMultiplexer> xMultiplexer (
+        css::ui::ContextChangeEventMultiplexer::get(
+            ::comphelper::getProcessComponentContext()));
+    if (xMultiplexer.is())
+        xMultiplexer->broadcastContextChangeEvent(aEvent, rxFrame->getController());
+}
+
+OUString ContextChangeBroadcaster::GetModuleName (const css::uno::Reference<css::frame::XFrame>& rxFrame)
+{
+    if ( ! rxFrame.is() || ! rxFrame->getController().is())
+        return OUString();
+    try
+    {
+        const Reference<XComponentContext> xContext (::comphelper::getProcessComponentContext() );
+        const Reference<frame::XModuleManager> xModuleManager  = frame::ModuleManager::create( xContext );
+        return xModuleManager->identify(rxFrame);
+    }
+    catch (const Exception&)
+    {
+        OSL_ENSURE(false, "can not determine module name");
+    }
+    return OUString();
+}
+
+} // end of namespace ::sfx2::sidebar
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */