WKWebView

gistfile1.swift

// Main ViewController (ViewController.swift)
import UIKit

class ViewController: UIViewController {
    
    //Changed the class and variable names to hide the company's and project's identity
    let myAPI: MyCustomAPI = MyCustomAPI()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        myAPI.renderWidget("widget1", onView: self.view)
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }
    
    override func loadView() {
        super.loadView()
    }
}

// MyCustomAPI.swift
import Foundation
import UIKit
import WebKit

struct MyCustomAPI: SomeProtocol {
    
    //SomeProtocol only specifies this function
    func renderWidget(id: String, onView view: UIView) {
    
        let model: WidgetModel = WidgetModel(name: "Example Widget", source: "index.html", type: "web", id: id)
    
        let WebViewClient = MyWebViewClient(model: model, containerView: view)
        let widget = WebViewClient.view
        
        view.addSubview(widget)
    }
}

//WebViewclient.swift

import Foundation
import WebKit
import UIkit

class MyWebViewClient: UIViewController, WKNavigationDelegate {
    
    private let widgetModel: WidgetModel? = nil
    private let containerView: UIView? = nil

    var webview: WKWebView!
    
    func loadURLWithString(URLString: String) {
        if let URL = NSURL(fileURLWithPath: URLString) {
            loadURL(URL)
        }
    }
    
    func loadURL(URL: NSURL) {
        self.webview.loadRequest(NSURLRequest(URL: URL))
    }
    
    // MARK: WKNavigationDelegate
    func webView(webView: WKWebView, didCommitNavigation navigation: WKNavigation!) {
        NSLog("commit")
    }
    
    func webView(webView: WKWebView, didFailNavigation navigation: WKNavigation!, withError error: NSError) {
        showError(error.localizedDescription)
    }
    
    func webView(webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: NSError) {
        showError(error.localizedDescription)
    }
    
    func webView(webView: WKWebView, didFinishNavigation navigation: WKNavigation!) {
        NSLog("finish")
    }
    
    func webView(webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
        NSLog("start")
    }
    
    // MARK: Some Private Methods
    
    private func showError(errorString: String?) {
        var alertView = UIAlertController(title: "Error", message: errorString, preferredStyle: .Alert)
        alertView.addAction(UIAlertAction(title: "OK", style: .Default, handler: nil))
        self.presentViewController(alertView, animated: true, completion: nil)
    }
    
    // MARK: Life Cycle
    override func viewDidLoad() {
        super.viewDidLoad()
        
        self.webview = WKWebView(frame: self.view.frame, configuration: WKWebViewConfiguration())
        
        //I think my problem is here
        self.webview.navigationDelegate = self
        
        self.view.addSubview(self.webview)
        
        //This will send the path to a local .html file that will be loaded inside the webview
        loadURLWithString(NSBundle.mainBundle().pathForResource((self.widgetModel?.source)!, ofType: nil, inDirectory: "widgets/\((self.widgetModel?.id)!)")!)
    }
    
    override func viewWillAppear(animated: Bool) {
        super.viewWillAppear(animated)
    }
    
    override func viewWillDisappear(animated: Bool) {
        super.viewWillDisappear(animated)
    }
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }
    
    // MARK: Initializers
    init(model: WidgetModel, containerView: UIView) {
        super.init()
        
        self.widgetModel = model
        self.containerView = containerView
    }
    
    required init(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }
    
    override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: NSBundle?) {
        super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
    }
}