SOLVED: Project 4, challenge

@Jonas-jan

Jun '21

Hey. This is probably obvious...But:

How should i call denied() function when decitionHandler is "(.cancel)" ?

Function to check if site is permitted:

func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
      let url = navigationAction.request.url
        if let host = url?.host {
           for website in websites {
               if host.contains(website){
                   decisionHandler(.allow)
                 return
                }
            }
            decisionHandler(.cancel)
        }

    }

Function to call alert:

func denied() {
        let ad = UIAlertController(title: "Permission denied", message: "Your are not allowed to CNBC", preferredStyle: .alert)
        ad.addAction(UIAlertAction(title: "Close", style: .default, handler: nil))
        present(ad, animated: true)
    }

I tried to call it right after decisionHandler(.cancel), but alert is trigged for "first loaded" website as well.

@hoss24

Jun '21

// should the page be loaded?
func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
    let url = navigationAction.request.url
    if url!.absoluteString.range(of: "about:blank") != nil {
        decisionHandler(.cancel)
        return
    }
    //check if host which means website domain like apple.com
    if let host = url?.host {
        for website in websites {
            print("host \(host)")
            if host.contains(website) {
                decisionHandler(.allow)
                return
            }
        }
    }
    print(url!)
    let ac = UIAlertController(title: "Page is Blocked", message: nil, preferredStyle: .alert)
    //cancel will default dismiss alert controller if tapped
    ac.addAction(UIAlertAction(title: "OK", style: .default))
    //anchors location on iPad
    //ac.popoverPresentationController?.barButtonItem = self.navigationItem.rightBarButtonItem
    present(ac, animated: true)
    decisionHandler(.cancel)
}

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