Shared cookies with WKProcessPool for WKWebView in Swift - swift

Can anyone please tell me how to create a WKProcessPool in Swift? I'm not familiar with Objective-C.
I have to create a WKProcessPool in order to have shared cookies with all WKWebViews. I want to keep cookies even when showing another viewcontroller with same class. I tried the following but it's not working.
import UIKit
import WebKit
class ViewController: UIViewController, WKNavigationDelegate {
var webView = WKWebView()
override func viewDidLoad() {
super.viewDidLoad()
let processPool = WKProcessPool()
let configuration = WKWebViewConfiguration()
configuration.processPool = WKProcessPool()
webView.navigationDelegate = self
view.addSubview(webView)
}
}

You need to use configuration.websiteDataStore property instead of processpool.
For the stored cookies use WKWebsiteDataStore.default() value.
For the private browsing use WKWebsiteDataStore.nonPersistent().

The apple site say:
If your app creates multiple web views, assign the same WKProcessPool
object to web views that may safely share a process space. Instantiate
an instance of this class and assign it to the processPool property of
each web view’s WKWebViewConfiguration object.
However, you set your processProtocol into class ViewControler. Then, this is redefined each time the view is instantiate. Do it:
import UIKit
import WebKit
let processPool = WKProcessPool()
class ViewController: UIViewController, WKNavigationDelegate { var webView = WKWebView()
override func viewDidLoad() {
super.viewDidLoad()
let configuration = WKWebViewConfiguration()
configuration.processPool = WKProcessPool()
webView.navigationDelegate = self
view.addSubview(webView)
}
}

Related

Swift 5.3 macOS - Load Local HTML

I am trying to load a local html based website into my macOS app and I am hitting issues, I have this working in iOS but not macOS.
My ViewController.swift looks like this
import Cocoa
import WebKit
class ViewController: NSViewController, WKUIDelegate, WKNavigationDelegate {
var webView: WKWebView!
override func loadView() {
let webConfig = WKWebViewConfiguration()
webView = WKWebView(frame: .zero, configuration: webConfig);
webView.uiDelegate = self
view = webView
}
override func viewDidLoad() {
super.viewDidLoad()
let htmlURL = Bundle.main.url(forResource: "index", withExtension: "html", subdirectory: "website")!
webView.loadFileURL(htmlURL, allowingReadAccessTo: htmlURL.deletingLastPathComponent())
}
}
The App runs but then I get this output in the console in Xcode:
WebPageProxy::tryReloadAfterProcessTermination: process crashed and the client did not handle it, not reloading the page because we reached the maximum number of attempts
The documentation for what I am trying to do seems to be lacking I wonder if anyone can help me sort this out please.
After some more digging I needed to do 2 things:
Amend my viewDidLoad() code:
let htmlURL = Bundle.main.url(forResource: "index", withExtension: "html", subdirectory: "polarix-website")!
webView.loadFileURL(htmlURL, allowingReadAccessTo: htmlURL.deletingLastPathComponent())
view = webView
Enable Outgoing Connections (Client) in the Signing & Capabilities

WKWebView shows a blank screen on OSX with no output

For some reason, the WKWebView just shows a blank screen with no errors
import Cocoa
import WebKit
class ViewController: NSViewController, WKNavigationDelegate {
#IBOutlet weak var webView: WKWebView?
override func viewDidLoad() {
super.viewDidLoad()
webView?.navigationDelegate = self
let url=URL(string: "https://www.google.com")
webView?.load(URLRequest(url: url!))
// Do any additional setup after loading the view.
}
override var representedObject: Any? {
didSet {
// Update the view, if already loaded.
}
}
}
Like I said, no errors, and it just shows a blank screen.
The storyboard looks like this:
Main.storyboard
You need to allow your application to have outgoing connections.
In your Target go to Capabilities, enable the App SandBox and check the Outgoing Connections.

views are merged instead of showing them separately

I have two xib file, one which shows login view and another which shows the steps what to do after the login is successful. I am having hard time to make it work. I have created macos project not ios and using safariservices so that it will work for the safari extension either.
Here is what i have done
import SafariServices
class SafariExtensionViewController: SFSafariExtensionViewController {
#IBOutlet weak var passwordMessage: NSTextField!
#IBOutlet weak var emailMessage: NSTextField!
#IBOutlet weak var message: NSTextField!
#IBOutlet weak var email: NSTextField!
#IBOutlet weak var password: NSSecureTextField!
static let shared = SafariExtensionViewController()
override func viewDidLoad() {
self.preferredContentSize = NSSize(width: 300, height: 250)
message.stringValue = ""
emailMessage.stringValue = ""
passwordMessage.stringValue = ""
}
override func viewDidAppear() {
if let storedEmail = UserDefaults.standard.object(forKey: "email") as? String {
if let stepView = Bundle.mainBundle.loadNibNamed(NSNib.Name(rawValue: "ExtensionStepsViewController"), owner: nil, topLevelObjects: nil)[0] {
self.view.addSubview(stepView)
}
}
}
#IBAction func userLogin(_ sender: Any) {
let providedEmailAddress = email.stringValue
let providedPassword = password.stringValue
let isEmailAddressValid = isValidEmailAddress(emailAddressString: providedEmailAddress)
self.message.stringValue = ""
emailMessage.stringValue = ""
passwordMessage.stringValue = ""
if isEmailAddressValid && providedPassword.count > 0 {
/* login process is handled here and store the email in local storage /*
/* TODO for now email is not stored in browser localstorage which has to be fixed */
let controller = "ExtensionStepsViewController"
let subview = ExtensionStepsViewController(nibName: NSNib.Name(rawValue: controller), bundle: nil)
self.view.addSubview(subview.view)
}
}
}
This way i get error like Type Bool has no subscript members my file structure looks something like this.
SafariExtensionViewController.xib (main one which is shown initially
with login screen)
SafariExtensionViewController.swift
ExtensionStepsViewController.xib(this view should be shown when user
is logged in instead of login screen)
ExtensionStepsViewController.swift
I am using xcode 10, swift 4, everything new.
UPDATE
I used the following block both in viewDidAppear(if there is email in localstorage then show extension steps view instead of login screen) and inside login function when the login is success but it does not navigate to that ExtensionStepsView
let controller = "ExtensionStepsViewController"
let subview = ExtensionStepsViewController(nibName: NSNib.Name(rawValue: controller), bundle: nil)
self.view.addSubview(subview.view)
Use case is show login at initial but if user is logged in then show another view but issue is now the view are merged
You got the error "Type Bool has no subscript members" because loadNibNamed(_:owner:topLevelObjects:) method of Bundle returns Bool struct that has no subscript members so you can't write like
true[0]
How to use this method correctly see the link and example from there:
var topLevelObjects : NSArray?
if Bundle.main.loadNibNamed(NSNib.Name(rawValue: "ExtensionStepsViewController"), owner: self, topLevelObjects: &topLevelObjects) {
let topLevelObjects!.first(where: { $0 is NSView }) as? NSView
}
Views were merged because you didn't remove previous views from the superview and added view from ExtensionStepsViewController to the same superview.
You can do the following steps to complete your issue:
Make SafariExtensionViewController inherited from SFSafariExtensionViewController that will be container (and parent) for two child view controllers such as LoginViewController and ExtensionStepsViewController and will be used to navigate between ones.
Make separately LoginViewController and ExtensionStepsViewController (both inherited from simple NSViewController) and its xibs.
Right after user logins transit from LoginViewController to ExtensionStepsViewController
As an example but instead of ParentViewController you have to use your implementation SafariExtensionViewController as I explain above in the first step.
public protocol LoginViewControllerDelegate: class {
func loginViewControllerDidLoginSuccessful(_ loginVC: LoginViewController)
}
public class LoginViewController: NSViewController {
weak var delegate: LoginViewControllerDelegate?
#IBAction func login(_ sender: Any) {
// login logic
let isLoginSuccessful = true
if isLoginSuccessful {
self.delegate?.loginViewControllerDidLoginSuccessful(self)
}
}
}
public class ExtensionStepsViewController: NSViewController {
}
public class ParentViewController: NSViewController, LoginViewControllerDelegate {
weak var login: LoginViewController! // using of force unwrap is anti-pattern. consider other solutions
weak var steps: ExtensionStepsViewController!
public override func viewDidLoad() {
let login = LoginViewController(nibName: NSNib.Name(rawValue: "LoginViewController"), bundle: nil)
login.delegate = self
// change login view frame if needed
login.view.frame = self.view.frame
self.view.addSubview(login.view)
// instead of setting login view frame you can add appropriate layout constraints
self.addChildViewController(login)
self.login = login
let steps = ExtensionStepsViewController(nibName: NSNib.Name(rawValue: "ExtensionStepsViewController"), bundle: nil)
steps.view.frame = self.view.frame
self.addChildViewController(steps)
self.steps = steps
}
// MARK: - LoginViewControllerDelegate
public func loginViewControllerDidLoginSuccessful(_ loginVC: LoginViewController) {
self.transition(from: self.login, to: self.steps, options: .slideLeft) {
// completion handler logic
print("transition is done successfully")
}
}
}
Here is a swift playground with this example.
UPD:
You can instantiate NSViewController in several ways:
Use NSStoryboard that allows to load view of NSViewController from .storyboard file:
let storyboard = NSStoryboard(name: NSStoryboard.Name("NameOfStoryboard"), bundle: nil)
let viewController = storyboard.instantiateController(withIdentifier: NSStoryboard.SceneIdentifier("NSViewControllerIdentifierInStoryboard"))
Use appropriate initialiser of NSViewController to load view of it from .xib file:
let steps = ExtensionStepsViewController(nibName: NSNib.Name(rawValue: "ExtensionStepsViewController"), bundle: nil)
Use default initialiser but you have to load view directly by overriding loadView() method if name of xib file is different from name of view controller class:
let steps = ExtensionStepsViewController()
// Also you have to override loadView() method of ExtensionStepsViewController.

Default website when web browser launches xcode swift

I have been creating my own web browser and have successfully done that in xcode. But then I wanted a certain url google for example to load when it first opens, now I have been having issues with this. If anyone can explain to me how to do this it would be great. I have tried multiple things in my ViewController class, but nothing seems to work.
Here's my code snippet, if there's something wrong with it could you tell me? :) thanks
import Cocoa
import WebKit
class ViewController: NSViewController {
#IBOutlet weak var webView: WebView!
override func viewDidLoad() {
super.viewDidLoad()
let urlString = "https://www.google.com/"
self.webView.mainFrame.loadRequest(NSURLRequest(URL: NSURL(string: urlString)! as URL))
}
override var representedObject: Any? {
didSet {
}
}
}
The API changed quite a bit in Swift 3. Here is the code that works:
import Cocoa
import WebKit
class ViewController: NSViewController {
#IBOutlet weak var webView: WebView!
override func viewDidLoad() {
super.viewDidLoad()
let urlString = "https://www.google.com/"
let request = URLRequest(url: URL(string: urlString)!)
self.webView.mainFrame.load(request)
}
}
All the Foundation classes dropped the NS prefix (https://github.com/apple/swift-evolution/blob/master/proposals/0086-drop-foundation-ns.md) and because they changed the way parameters work, the load function changed quite a bit.

swift open website with a webview

My first app with swift... failing terribly.
I'm trying to open a website using webview and found this code online.
class ViewController: UIViewController {
#IBOutlet var webView: UIWebView!
override func viewDidLoad() {
super.viewDidLoad()
let url = NSURL(string: "http://www.sourcefreeze.com")
let request = NSURLRequest(URL: url!)
webView.loadRequest(request)
}
Well I get a fatal error: unexpectedly found nil while unwrapping an Optional value
Why should this value be null ?!
One of two things may be going on.
Your webView is not hooked up to a storyboard element.
Your URL object isn't be initialized
I think it's the former, but I've taken the liberty of making your code safer by optionally binding your NSURL object.
class ViewController: UIViewController {
#IBOutlet var webView: UIWebView!
override func viewDidLoad() {
super.viewDidLoad()
if let url = NSURL(string: "http://www.sourcefreeze.com") {
let request = NSURLRequest(URL: url)
webView.loadRequest(request)
}
}
Change webView.loadRequest(request) to webView?.loadRequest(request).
You need to unblock Transport Security which doesn't allow http loads. Try this.