How to show the current URL that webkit is on

I want the current URL that webkit is on to show up in the address bar. I can't seem to figure out a solution. As of right now all I have is a webkit that is taking the string from the text field to use as a url. But I want it to display the current url everytime the url changes so for example if I am on youtube.com and I search "hello" it should display I want the current URL that webkit is on to sho