When browser is refreshed how do I know that

Vaadin 6 / 7 / 8
1

Our Root instance has following property set

this.getApplication().setRootPreserved(true);

Now when I refresh the browser, nothing gets called (like init etc). But I need to capture some event to perform some operations whenever browser is refreshed.

What is the mechanism to capture the refresh event when the above property is set?

2

If I’m reading the docs correctly, the root will be cleaned up and new one created on refresh:

“Refreshing a browser window WILL cause Root cleanup”
. Does this mean a close event will be fired? I don’t know, it’s unclear. But you can test for it.

3

Wait, it is clear. Read down further on that page for the code.