1 files changed, 140 insertions, 0 deletions
diff --git a/sfx2/source/sidebar/ContextChangeBroadcaster.cxx b/sfx2/source/sidebar/ContextChangeBroadcaster.cxx
new file mode 100644
index 000000000000..dab1b3fa76fe
--- /dev/null
+++ b/sfx2/source/sidebar/ContextChangeBroadcaster.cxx
@@ -0,0 +1,140 @@
+/**************************************************************
+ *
+ * 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
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ *************************************************************/
+
+#include "precompiled_sfx2.hxx"
+
+#include "sfx2/sidebar/ContextChangeBroadcaster.hxx"
+#include "sfx2/sidebar/EnumContext.hxx"
+#include <com/sun/star/ui/ContextChangeEventObject.hpp>
+#include <com/sun/star/ui/ContextChangeEventMultiplexer.hpp>
+#include <com/sun/star/frame/XModuleManager.hpp>
+#include <comphelper/componentcontext.hxx>
+#include <comphelper/processfactory.hxx>
+
+
+using ::rtl::OUString;
+using namespace css;
+using namespace cssu;
+
+namespace sfx2 { namespace sidebar {
+
+
+ContextChangeBroadcaster::ContextChangeBroadcaster (void)
+    : msContextName(),
+      mbIsContextActive(false)
+{
+}
+
+
+
+ContextChangeBroadcaster::~ContextChangeBroadcaster (void)
+{
+}
+
+
+
+
+void ContextChangeBroadcaster::Initialize (const ::rtl::OUString& rsContextName)
+{
+    OSL_ASSERT( ! mbIsContextActive);
+
+    msContextName = rsContextName;
+}
+
+
+
+
+void ContextChangeBroadcaster::Activate (const cssu::Reference<css::frame::XFrame>& rxFrame)
+{
+    if (msContextName.getLength() > 0)
+        BroadcastContextChange(rxFrame, GetModuleName(rxFrame), msContextName);
+}
+
+
+
+
+void ContextChangeBroadcaster::Deactivate (const cssu::Reference<css::frame::XFrame>& rxFrame)
+{
+    if (msContextName.getLength() > 0)
+    {
+        BroadcastContextChange(
+            rxFrame,
+            GetModuleName(rxFrame),
+            EnumContext::GetContextName(EnumContext::Context_Default));
+    }
+}
+
+
+
+
+void ContextChangeBroadcaster::BroadcastContextChange (
+    const cssu::Reference<css::frame::XFrame>& rxFrame,
+    const ::rtl::OUString& rsModuleName,
+    const ::rtl::OUString& rsContextName)
+{
+    if (rsContextName.getLength() == 0)
+        return;
+
+    if ( ! rxFrame.is() || ! rxFrame->getController().is())
+    {
+        // Frame is (probably) being deleted.  Broadcasting context
+        // changes is not necessary anymore.
+        return;
+    }
+
+    const css::ui::ContextChangeEventObject aEvent(
+        rxFrame->getController(),
+        rsModuleName,
+        rsContextName);
+
+    cssu::Reference<css::ui::XContextChangeEventMultiplexer> xMultiplexer (
+        css::ui::ContextChangeEventMultiplexer::get(
+            ::comphelper::getProcessComponentContext()));
+    if (xMultiplexer.is())
+        xMultiplexer->broadcastContextChangeEvent(aEvent, rxFrame->getController());
+}
+
+
+
+
+OUString ContextChangeBroadcaster::GetModuleName (const cssu::Reference<css::frame::XFrame>& rxFrame)
+{
+    if ( ! rxFrame.is() || ! rxFrame->getController().is())
+        return OUString();
+    OUString sModuleName;
+    try
+    {
+        const ::comphelper::ComponentContext aContext (::comphelper::getProcessServiceFactory());
+        const Reference<frame::XModuleManager> xModuleManager (
+            aContext.createComponent("com.sun.star.frame.ModuleManager" ),
+            UNO_QUERY_THROW );
+        return xModuleManager->identify(rxFrame);
+    }
+    catch (const Exception&)
+    {
+        OSL_ENSURE(false, "can not determine module name");
+    }
+    return OUString();
+}
+
+
+
+} } // end of namespace ::sd::sidebar