//
// SwiftWebVC.swift
//
// Created by Myles Ringle on 24/06/2015.
// Transcribed from code used in SVWebViewController.
// Copyright (c) 2015 Myles Ringle & Sam Vermette. All rights reserved.
//
import WebKit
public protocol SwiftWebVCDelegate: class {
func didStartLoading()
func didReceiveServerRedirectForProvisionalNavigation(url: URL)
func didFinishLoading(success: Bool)
func didFinishLoading(success: Bool, url: URL)
func webDismiss()
func decidePolicyForNavigationAction(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void)
}
public class SwiftWebVC: UIViewController {
public weak var delegate: SwiftWebVCDelegate?
var storedStatusColor: UIBarStyle?
var buttonColor: UIColor? = nil
var titleColor: UIColor? = nil
var closing: Bool! = false
lazy var backBarButtonItem: UIBarButtonItem = {
var tempBackBarButtonItem = UIBarButtonItem(image: SwiftWebVC.bundledImage(named: "SwiftWebVCBack"),
style: UIBarButtonItemStyle.plain,
target: self,
action: #selector(SwiftWebVC.goBackTapped(_:)))
tempBackBarButtonItem.width = 18.0
tempBackBarButtonItem.tintColor = self.buttonColor
return tempBackBarButtonItem
}()
lazy var forwardBarButtonItem: UIBarButtonItem = {
var tempForwardBarButtonItem = UIBarButtonItem(image: SwiftWebVC.bundledImage(named: "SwiftWebVCNext"),
style: UIBarButtonItemStyle.plain,
target: self,
action: #selector(SwiftWebVC.goForwardTapped(_:)))
tempForwardBarButtonItem.width = 18.0
tempForwardBarButtonItem.tintColor = self.buttonColor
return tempForwardBarButtonItem
}()
lazy var refreshBarButtonItem: UIBarButtonItem = {
var tempRefreshBarButtonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.refresh,
target: self,
action: #selector(SwiftWebVC.reloadTapped(_:)))
tempRefreshBarButtonItem.tintColor = self.buttonColor
return tempRefreshBarButtonItem
}()
lazy var stopBarButtonItem: UIBarButtonItem = {
var tempStopBarButtonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.stop,
target: self,
action: #selector(SwiftWebVC.stopTapped(_:)))
tempStopBarButtonItem.tintColor = self.buttonColor
return tempStopBarButtonItem
}()
lazy var actionBarButtonItem: UIBarButtonItem = {
var tempActionBarButtonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.action,
target: self,
action: #selector(SwiftWebVC.actionButtonTapped(_:)))
tempActionBarButtonItem.tintColor = self.buttonColor
return tempActionBarButtonItem
}()
lazy var webView: WKWebView = {
var tempWebView = WKWebView(frame: UIScreen.main.bounds)
tempWebView.uiDelegate = self
tempWebView.navigationDelegate = self
return tempWebView;
}()
var request: URLRequest!
var navBarTitle: UILabel!
var hideToolbar = false
////////////////////////////////////////////////
deinit {
webView.stopLoading()
UIApplication.shared.isNetworkActivityIndicatorVisible = false
webView.uiDelegate = nil;
webView.navigationDelegate = nil;
}
public convenience init(urlString: String, hideToolbar: Bool) {
self.init(pageURL: URL(string: urlString)!, hideToolbar: hideToolbar)
}
public convenience init(pageURL: URL, hideToolbar: Bool) {
self.init(aRequest: URLRequest(url: pageURL), hideToolbar: hideToolbar)
}
public convenience init(aRequest: URLRequest, hideToolbar: Bool) {
self.init()
self.request = aRequest
self.request.addValue("true", forHTTPHeaderField: "OCS-APIRequest")
let language = NSLocale.preferredLanguages[0] as String
self.request.addValue(language, forHTTPHeaderField: "Accept-Language")
self.hideToolbar = hideToolbar
}
func loadRequest(_ request: URLRequest) {
let userAgent : String = CCUtility.getUserAgent()
webView.customUserAgent = userAgent
webView.load(request)
}
////////////////////////////////////////////////
// View Lifecycle
override public func loadView() {
view = webView
loadRequest(request)
}
override public func viewDidLoad() {
super.viewDidLoad()
updateToolbarItems()
}
override public func viewWillAppear(_ animated: Bool) {
assert(self.navigationController != nil, "SVWebViewController needs to be contained in a UINavigationController. If you are presenting SVWebViewController modally, use SVModalWebViewController instead.")
navBarTitle = UILabel()
navBarTitle.backgroundColor = UIColor.clear
if presentingViewController == nil {
if let titleAttributes = navigationController!.navigationBar.titleTextAttributes {
navBarTitle.textColor = titleAttributes[NSAttributedStringKey.foregroundColor] as! UIColor //[titleAttributes:"NSColor"] // ["NSColor"] as! UIColor
}
}
else {
navBarTitle.textColor = self.titleColor
}
navBarTitle.shadowOffset = CGSize(width: 0, height: 1);
navBarTitle.font = UIFont(name: "HelveticaNeue-Medium", size: 17.0)
navigationItem.titleView = navBarTitle;
super.viewWillAppear(true)
if (UIDevice.current.userInterfaceIdiom == UIUserInterfaceIdiom.phone) {
self.navigationController?.setToolbarHidden(false, animated: false)
}
else if (UIDevice.current.userInterfaceIdiom == UIUserInterfaceIdiom.pad) {
self.navigationController?.setToolbarHidden(true, animated: true)
}
self.navigationController?.setToolbarHidden(hideToolbar, animated: false)
}
override public func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(true)
if (UIDevice.current.userInterfaceIdiom == UIUserInterfaceIdiom.phone) {
self.navigationController?.setToolbarHidden(true, animated: true)
}
}
override public func viewDidDisappear(_ animated: Bool) {
super.viewDidDisappear(true)
UIApplication.shared.isNetworkActivityIndicatorVisible = false
}
override public func dismiss(animated flag: Bool, completion: (() -> Void)? = nil) {
super.dismiss(animated: flag, completion: {
self.delegate?.webDismiss()
})
}
////////////////////////////////////////////////
// Toolbar
func updateToolbarItems() {
backBarButtonItem.isEnabled = webView.canGoBack
forwardBarButtonItem.isEnabled = webView.canGoForward
let refreshStopBarButtonItem: UIBarButtonItem = webView.isLoading ? stopBarButtonItem : refreshBarButtonItem
let fixedSpace: UIBarButtonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.fixedSpace, target: nil, action: nil)
let flexibleSpace: UIBarButtonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.flexibleSpace, target: nil, action: nil)
if (UIDevice.current.userInterfaceIdiom == UIUserInterfaceIdiom.pad) {
let toolbarWidth: CGFloat = 250.0
fixedSpace.width = 35.0
let items: NSArray = [fixedSpace, refreshStopBarButtonItem, fixedSpace, backBarButtonItem, fixedSpace, forwardBarButtonItem, fixedSpace, actionBarButtonItem]
let toolbar: UIToolbar = UIToolbar(frame: CGRect(x: 0.0, y: 0.0, width: toolbarWidth, height: 44.0))
if !closing {
toolbar.items = items as? [UIBarButtonItem]
if presentingViewController == nil {
toolbar.barTintColor = navigationController?.navigationBar.barTintColor
}
else {
toolbar.barStyle = (navigationController?.navigationBar.barStyle)!
}
toolbar.tintColor = navigationController?.navigationBar.tintColor
}
navigationItem.rightBarButtonItems = items.reverseObjectEnumerator().allObjects as? [UIBarButtonItem]
}
else {
let items: NSArray = [fixedSpace, backBarButtonItem, flexibleSpace, forwardBarButtonItem, flexibleSpace, refreshStopBarButtonItem, flexibleSpace, actionBarButtonItem, fixedSpace]
if !closing {
if presentingViewController == nil {
navigationController?.toolbar.barTintColor = navigationController?.navigationBar.barTintColor
}
else {
navigationController?.toolbar.barStyle = (navigationController?.navigationBar.barStyle)!
}
navigationController?.toolbar.tintColor = navigationController?.navigationBar.tintColor
toolbarItems = items as? [UIBarButtonItem]
}
}
}
////////////////////////////////////////////////
// Target Actions
@objc func goBackTapped(_ sender: UIBarButtonItem) {
webView.goBack()
}
@objc func goForwardTapped(_ sender: UIBarButtonItem) {
webView.goForward()
}
@objc func reloadTapped(_ sender: UIBarButtonItem) {
webView.reload()
}
@objc func stopTapped(_ sender: UIBarButtonItem) {
webView.stopLoading()
updateToolbarItems()
}
@objc func actionButtonTapped(_ sender: AnyObject) {
if let url: URL = ((webView.url != nil) ? webView.url : request.url) {
let activities: NSArray = [SwiftWebVCActivitySafari(), SwiftWebVCActivityChrome()]
if url.absoluteString.hasPrefix("file:///") {
let dc: UIDocumentInteractionController = UIDocumentInteractionController(url: url)
dc.presentOptionsMenu(from: view.bounds, in: view, animated: true)
}
else {
let activityController: UIActivityViewController = UIActivityViewController(activityItems: [url], applicationActivities: activities as? [UIActivity])
if floor(NSFoundationVersionNumber) > NSFoundationVersionNumber_iOS_7_1 && UIDevice.current.userInterfaceIdiom == UIUserInterfaceIdiom.pad {
let ctrl: UIPopoverPresentationController = activityController.popoverPresentationController!
ctrl.sourceView = view
ctrl.barButtonItem = sender as? UIBarButtonItem
}
present(activityController, animated: true, completion: nil)
}
}
}
////////////////////////////////////////////////
@objc func doneButtonTapped() {
closing = true
UINavigationBar.appearance().barStyle = storedStatusColor!
self.dismiss(animated: true, completion: nil)
}
// MARK: - Class Methods
/// Helper function to get image within SwiftWebVCResources bundle
///
/// - parameter named: The name of the image in the SwiftWebVCResources bundle
class func bundledImage(named: String) -> UIImage? {
let image = UIImage(named: named)
if image == nil {
return UIImage(named: named, in: Bundle(for: SwiftWebVC.classForCoder()), compatibleWith: nil)
} // Replace MyBasePodClass with yours
return image
}
}
extension SwiftWebVC: WKUIDelegate {
// Add any desired WKUIDelegate methods here: https://developer.apple.com/reference/webkit/wkuidelegate
}
extension SwiftWebVC: WKNavigationDelegate {
public func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
self.delegate?.didStartLoading()
UIApplication.shared.isNetworkActivityIndicatorVisible = true
updateToolbarItems()
}
public func webView(_ webView: WKWebView, didReceiveServerRedirectForProvisionalNavigation navigation: WKNavigation!) {
self.delegate?.didReceiveServerRedirectForProvisionalNavigation(url: webView.url!)
}
public func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
self.delegate?.didFinishLoading(success: true)
self.delegate?.didFinishLoading(success: true, url: webView.url!)
UIApplication.shared.isNetworkActivityIndicatorVisible = false
webView.evaluateJavaScript("document.title") { result, error in
guard let title = result as? String else { return }
if (error == nil && self.navBarTitle != nil) {
self.navBarTitle.text = String(describing: title)
self.navBarTitle.sizeToFit()
self.updateToolbarItems()
}
}
}
public func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
self.delegate?.decidePolicyForNavigationAction(webView, decidePolicyFor: navigationAction, decisionHandler: decisionHandler)
/*
let url = navigationAction.request.url
if #available(iOS 9.0, *) {
decisionHandler(.allow)
} else {
let userAgent : String = CCUtility.getUserAgent()
if (navigationAction.request.value(forHTTPHeaderField: "User-Agent") == userAgent) {
decisionHandler(.allow)
} else {
let newRequest : NSMutableURLRequest = navigationAction.request as! NSMutableURLRequest
newRequest.setValue(userAgent, forHTTPHeaderField: "User-Agent")
decisionHandler(.cancel)
webView.load(newRequest as URLRequest)
}
}
*/
}
public func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
self.delegate?.didFinishLoading(success: false)
self.delegate?.didFinishLoading(success: false, url: webView.url!)
UIApplication.shared.isNetworkActivityIndicatorVisible = false
updateToolbarItems()
}
public func webView(_ webView: WKWebView, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
if let serverTrust = challenge.protectionSpace.serverTrust {
completionHandler(Foundation.URLSession.AuthChallengeDisposition.useCredential, URLCredential(trust: serverTrust))
} else {
completionHandler(URLSession.AuthChallengeDisposition.useCredential, nil);
}
}
}