Open WebView links in Safari View Controller. (Xcode, Swift)

I am trying to open various WebView links in a Safari View Controller.

So from within a WebView (Swift) I need to be able to open all external links in Safari View Controller, with the exception of internal links that will open within the WebView (self).


//MARK: Button Click on open with SafariViewController

private var urlString:String = ""

@IBAction func openWithSafariVC(sender: AnyObject)
    let svc = SFSafariViewController(URL: NSURL(string: self.urlString)!)
    svc.delegate = self
    self.presentViewController(svc, animated: true, completion: nil)
//MARK: SafatriViewConroller Dismiss 

func safariViewControllerDidFinish(controller: SFSafariViewController)
    controller.dismissViewControllerAnimated(true, completion: nil)

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