How to use PostMessage API to keep user focus after diagram update?

[reinoutkoninkx]

How can I push a changed XML to the diagram through the iframe and not have the diagram focus be reset to 0, 0?
Right now I use something like this:

iframe.contentWindow.postMessage(
    JSON.stringify({
       action: 'load',
           xml: data.xml
       }),
       '*'
);