lokdialog: Emit callback when title is changed

The plan is to remove the getDialogInfo from LOK API but one more step
before doing that is to find out why the dialog size in 'created'
dialog callback is less than what the actual dialog after painting is.

Change-Id: I5176e175cbf7ed81c1465feeeea053c9a024fbd9

vcl/source/window/dialog.cxx

@@ -59,6 +59,7 @@
 #include <salframe.hxx>
 
 #include <iostream>
+#include <utility>
 
 static OString ImplGetDialogText( Dialog* pDialog )
 {
@@ -691,6 +692,15 @@ void Dialog::StateChanged( StateChangedType nType )
 
         ImplMouseAutoPos( this );
     }
+    else if (nType == StateChangedType::Text)
+    {
+        if (const vcl::ILibreOfficeKitNotifier* pNotifier = GetLOKNotifier())
+        {
+            std::vector<vcl::LOKPayloadItem> aPayload;
+            aPayload.push_back(std::make_pair(OString("title"), GetText().toUtf8()));
+            pNotifier->notifyWindow(GetLOKWindowId(), "title_changed", aPayload);
+        }
+    }
 
     SystemWindow::StateChanged( nType );