Otafuku

Otafuku provides utility classes to use WKWebView.

Features

WebViewUIController to handle WKUIDelegate methods by presenting an alert as usual browsers do.
WebViewPropertyObserver to notify WKWebView property value change via a registered closure and Swift enum. With this class, no KVO code is needed to know WKWebView property value change.

Usage

WebViewUIController

WebViewUIController handles WKUIDelegate.
As shown below, simply declare a property of WebViewUIController and set it to WKWebView.UIDelegate in UIViewController.viewDidLoad.

class ViewController: UIViewController {
    let uiDelegate = WebViewUIController()

    override func viewDidLoad() {
        super.viewDidLoad()
        webView.UIDelegate = uiDelegate
    }
}

WebViewPropertyObserver

WebViewPropertyObserver notifies WKWebView property value change.
As shown below, declare a property of WebViewPropertyObserver to retain its object throughout the ViewController's life cycle.
To initialize, pass a WKWebView object and a closure handling WKWebView's property change.

class ViewController: UIViewController {
    @IBOutlet var progressView: UIProgressView!
    @IBOutlet var backItem: UIBarButtonItem!
    @IBOutlet var forwardItem: UIBarButtonItem!

    var propertyObserver: WebViewPropertyObserver?

    override func viewDidLoad() {
        super.viewDidLoad()
        propertyObserver = WebViewPropertyObserver(webView: webView, handler:handleWebViewPropertyChange)
    }

    func handleWebViewPropertyChange(property: WebViewPropertyObserver.WebViewProperty) {
        switch property {
        case .Title(let title):
            navigationItem.title = title
        case .URL(let URL):
            // do something with URL
            break
        case .CanGoBack(let canGoBack):
            backItem.enabled = canGoBack
        case .CanGoForward(let canGoForward):
            forwardItem.enabled = canGoForward
        case .EstimatedProgress(let progress):
            progressView.progress = progress
        case .Loading(let loading):
            // do something with loading
            break
        case .HasOnlySecureContent(let secureContent):
            // do something with secureContent
            break
        }
    }
}

Requirements

iOS 8.0+
Swift 3.0
Xcode 8.0

Installation

Install with CocoaPods

platform :ios, '8.0'
use_frameworks!

pod 'Otafuku'

License

Otafuku is released under the MIT license. See LICENSE for details.

tasanobu / Otafuku