How would I access a pop ui button?

I have a pop up button that is triggered by deleting an object. How can I click the button if I can seem to find it.

I have used xpath like so:

$browser.button(:xpath, "/html/body/div/div/div/div/div/div/button").click

Here is a code snippet:

Thanks in advance.

Try this:

browser.span(:text => "Delete").click

or

browser.span(:class => "ui-button-text).click

or

browser.button(:class => /ui-button/).click