embeddedobj: add a status indicator for the Further objects dialog

Inserting a large file can take a while, and we do it on the main
thread, so the UI is frozen during the operation.

Create the progressbar in cui, which is allowed to link against sfx2/
and then pass it down to embeddedobj/. Similarly for the label of the
progressbar, again because cui is allowed to link against svx/.

Change-Id: I53fec4e14df647b140647d9ff5a3a37c0aa9e72e
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/122825
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins

embeddedobj/source/msole/xdialogcreator.cxx

@@ -29,6 +29,7 @@
 #include <com/sun/star/datatransfer/DataFlavor.hpp>
 #include <com/sun/star/lang/IllegalArgumentException.hpp>
 #include <com/sun/star/ucb/CommandAbortedException.hpp>
+#include <com/sun/star/task/XStatusIndicatorFactory.hpp>
 
 #include <osl/thread.h>
 #include <osl/file.hxx>
@@ -40,6 +41,7 @@
 #include <comphelper/processfactory.hxx>
 #include <cppuhelper/supportsservice.hxx>
 #include <cppuhelper/weak.hxx>
+#include <comphelper/sequenceashashmap.hxx>
 
 #include "xdialogcreator.hxx"
 #include <oleembobj.hxx>
@@ -215,8 +217,31 @@ embed::InsertedObjectInfo SAL_CALL MSOLEDialogObjectCreator::createInstanceByDia
         if ( !xEmbCreator.is() )
             throw uno::RuntimeException();
 
+        uno::Reference<task::XStatusIndicator> xProgress;
+        OUString aProgressText;
+        comphelper::SequenceAsHashMap aMap(aInObjArgs);
+        auto it = aMap.find("StatusIndicator");
+        if (it != aMap.end())
+        {
+            it->second >>= xProgress;
+        }
+        it = aMap.find("StatusIndicatorText");
+        if (it != aMap.end())
+        {
+            it->second >>= aProgressText;
+        }
+        if (xProgress.is())
+        {
+            xProgress->start(aProgressText, 100);
+        }
+
         aObjectInfo.Object.set( xEmbCreator->createInstanceInitFromMediaDescriptor( xStorage, sEntName, aMediaDescr, aObjArgs ),
                                 uno::UNO_QUERY );
+
+        if (xProgress.is())
+        {
+            xProgress->end();
+        }
     }
 
     if ( ( io.dwFlags & IOF_CHECKDISPLAYASICON) && io.hMetaPict != nullptr )