lokdialog: Execute all UNO commands asynchronously for LOK

Especially in case of dialogs, Online cannot afford to wait till the
call to UNO command returns as the same thread is responsible for doing
many more tasks as well.

And just adding this check doesn't seem to have any repurcussions, so I
guess we are fine.

Change-Id: Iac7c1413d90e8a264502dcf2bc280e09fd52683b
Reviewed-on: https://gerrit.libreoffice.org/45527Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Jan Holesovsky <kendy@collabora.com>

desktop/qa/desktop_lib/test_desktop_lib.cxx

@@ -529,6 +529,7 @@ void DesktopLOKTest::testPasteWriter()
     CPPUNIT_ASSERT(pDocument->pClass->paste(pDocument, "text/plain;charset=utf-8", aText.getStr(), aText.getLength()));
 
     pDocument->pClass->postUnoCommand(pDocument, ".uno:SelectAll", nullptr, false);
+    Scheduler::ProcessEventsToIdle();
     char* pText = pDocument->pClass->getTextSelection(pDocument, "text/plain;charset=utf-8", nullptr);
     CPPUNIT_ASSERT_EQUAL(OString("hello"), OString(pText));
     free(pText);
@@ -902,6 +903,7 @@ void DesktopLOKTest::testSheetOperations()
     pDocument->pClass->postUnoCommand(pDocument, ".uno:Remove",
           "{ \"Index\": { \"type\": \"long\", \"value\": 3 } }", false);
 
+    Scheduler::ProcessEventsToIdle();
     CPPUNIT_ASSERT_EQUAL(pDocument->pClass->getParts(pDocument), 6);
 
     std::vector<OString> aExpected = { "FirstSheet", "Renamed", "Sheet3", "Sheet4", "Sheet5", "LastSheet" };

desktop/source/lib/init.cxx

@@ -2329,6 +2329,12 @@ static void doc_postUnoCommand(LibreOfficeKitDocument* pThis, const char* pComma
     LibLODocument_Impl* pDocument = static_cast<LibLODocument_Impl*>(pThis);
 
     std::vector<beans::PropertyValue> aPropertyValuesVector(jsonToPropertyValuesVector(pArguments));
+
+    beans::PropertyValue aSynchronMode;
+    aSynchronMode.Name = "SynchronMode";
+    aSynchronMode.Value <<= false;
+    aPropertyValuesVector.push_back(aSynchronMode);
+
     int nView = SfxLokHelper::getView();
     if (nView < 0)
         return;