[VoiceOver] Self-hosted Login Flow enhancements

WordPressAuthenticator.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name          = "WordPressAuthenticator"
-  s.version       = "1.10.5"
+  s.version       = "1.10.6-beta.1"
   s.summary       = "WordPressAuthenticator implements an easy and elegant way to authenticate your WordPress Apps."
 
   s.description   = <<-DESC

WordPressAuthenticator/Authenticator/WordPressAuthenticatorDisplayStrings.swift

@@ -25,6 +25,6 @@ public extension WordPressAuthenticatorDisplayStrings {
     static var defaultStrings: WordPressAuthenticatorDisplayStrings {
         return WordPressAuthenticatorDisplayStrings(emailLoginInstructions: NSLocalizedString("Log in to your WordPress.com account with your email address.", comment: "Instruction text on the login's email address screen."),
                                                     jetpackLoginInstructions: NSLocalizedString("Log in to the WordPress.com account you used to connect Jetpack.", comment: "Instruction text on the login's email address screen."),
-                                                    siteLoginInstructions: NSLocalizedString("Enter the address of your WordPress site you'd like to connect.", comment: "Instruction text on the login's site addresss screen."))
+                                                    siteLoginInstructions: NSLocalizedString("Enter the address of the WordPress site you'd like to connect.", comment: "Instruction text on the login's site addresss screen."))
     }
 }

WordPressAuthenticator/Extensions/WPStyleGuide+Login.swift

@@ -47,6 +47,9 @@ extension WPStyleGuide {
         onePasswordButton.setImage(.onePasswordImage, for: .normal)
         onePasswordButton.sizeToFit()
 
+        onePasswordButton.accessibilityLabel =
+            NSLocalizedString("Fill with password manager", comment: "The password manager button in login pages. The button opens a dialog showing which password manager to use (e.g. 1Password, LastPass). ")
+
         textField.rightView = onePasswordButton
         textField.rightViewMode = .always
 

WordPressAuthenticator/NUX/WPWalkthroughTextField.m

@@ -120,6 +120,8 @@ - (void)configureSecureTextEntryToggle {
     [self.secureTextEntryToggle addTarget:self action:@selector(secureTextEntryToggleAction:) forControlEvents:UIControlEventTouchUpInside];
 
     [self updateSecureTextEntryToggleImage];
+    [self updateSecureTextEntryForAccessibility];
+
     self.rightView = self.secureTextEntryToggle;
     self.rightViewMode = UITextFieldViewModeAlways;
 }
@@ -253,6 +255,7 @@ - (void)setSecureTextEntry:(BOOL)secureTextEntry
 
     [super setSecureTextEntry:secureTextEntry];
     [self updateSecureTextEntryToggleImage];
+    [self updateSecureTextEntryForAccessibility];
 }
 
 - (void)secureTextEntryToggleAction:(id)sender
@@ -272,4 +275,17 @@ - (void)updateSecureTextEntryToggleImage
     [self.secureTextEntryToggle sizeToFit];
 }
 
+- (void)updateSecureTextEntryForAccessibility
+{
+    self.secureTextEntryToggle.accessibilityLabel = NSLocalizedString(@"Show password", @"Accessibility label for the “Show password“ button in the login page's password field.");
+
+    NSString *accessibilityValue;
+    if (self.isSecureTextEntry) {
+        accessibilityValue = NSLocalizedString(@"Hidden", "Accessibility value if login page's password field is hiding the password (i.e. with asterisks).");
+    } else {
+        accessibilityValue = NSLocalizedString(@"Shown", "Accessibility value if login page's password field is displaying the password.");
+    }
+    self.secureTextEntryToggle.accessibilityValue = accessibilityValue;
+}
+
 @end

WordPressAuthenticator/Signin/LoginSelfHostedViewController.swift

@@ -36,6 +36,7 @@ class LoginSelfHostedViewController: LoginViewController, NUXKeyboardResponder {
         localizeControls()
         setupOnePasswordButtonIfNeeded()
         displayLoginMessage("")
+        configureForAcessibility()
     }
 
 
@@ -90,6 +91,26 @@ class LoginSelfHostedViewController: LoginViewController, NUXKeyboardResponder {
     }
 
 
+    /// Sets up necessary accessibility labels and attributes for the all the UI elements in self.
+    ///
+    private func configureForAcessibility() {
+        usernameField.accessibilityLabel =
+            NSLocalizedString("Username", comment: "Accessibility label for the username text field in the self-hosted login page.")
+        passwordField.accessibilityLabel =
+            NSLocalizedString("Password", comment: "Accessibility label for the password text field in the self-hosted login page.")
+
+        if UIAccessibility.isVoiceOverRunning {
+            // Remove the placeholder if VoiceOver is running. VoiceOver speaks the label and the
+            // placeholder together. In this case, both labels and placeholders are the same so it's
+            // like VoiceOver is reading the same thing twice.
+            usernameField.placeholder = nil
+            passwordField.placeholder = nil
+        }
+
+        forgotPasswordButton.accessibilityTraits = .link
+    }
+
+
     /// Sets up a 1Password button if 1Password is available.
     ///
     @objc func setupOnePasswordButtonIfNeeded() {
@@ -294,7 +315,9 @@ extension LoginSelfHostedViewController {
         configureViewLoading(false)
         let err = error as NSError
         if err.code == 403 {
-            displayError(message: NSLocalizedString("It looks like this username/password isn't associated with this site.", comment: "An error message shown during log in when the username or password is incorrect."))
+            let message = NSLocalizedString("It looks like this username/password isn't associated with this site.",
+                                            comment: "An error message shown during log in when the username or password is incorrect.")
+            displayError(message: message, moveVoiceOverFocus: true)
         } else {
             displayError(error as NSError, sourceTag: sourceTag)
         }

WordPressAuthenticator/Signin/LoginSiteAddressViewController.swift

@@ -37,6 +37,7 @@ class LoginSiteAddressViewController: LoginViewController, NUXKeyboardResponder
     override func viewDidLoad() {
         super.viewDidLoad()
         localizeControls()
+        configureForAccessibility()
     }
 
 
@@ -90,6 +91,12 @@ class LoginSiteAddressViewController: LoginViewController, NUXKeyboardResponder
         siteAddressHelpButton.titleLabel?.numberOfLines = 0
     }
 
+    /// Sets up necessary accessibility labels and attributes for the all the UI elements in self.
+    ///
+    private func configureForAccessibility() {
+        siteURLField.accessibilityLabel =
+            NSLocalizedString("Site address", comment: "Accessibility label of the site address field shown when adding a self-hosted site.")
+    }
 
     /// Configures the content of the text fields based on what is saved in `loginFields`.
     ///
@@ -178,15 +185,15 @@ class LoginSiteAddressViewController: LoginViewController, NUXKeyboardResponder
             let err = self.originalErrorOrError(error: error as NSError)
 
             if let xmlrpcValidatorError = err as? WordPressOrgXMLRPCValidatorError {
-                self.displayError(message: xmlrpcValidatorError.localizedDescription)
+                self.displayError(message: xmlrpcValidatorError.localizedDescription, moveVoiceOverFocus: true)
 
             } else if (err.domain == NSURLErrorDomain && err.code == NSURLErrorCannotFindHost) ||
                 (err.domain == NSURLErrorDomain && err.code == NSURLErrorNetworkConnectionLost) {
                 // NSURLErrorNetworkConnectionLost can be returned when an invalid URL is entered.
                 let msg = NSLocalizedString(
                     "The site at this address is not a WordPress site. For us to connect to it, the site must use WordPress.",
                     comment: "Error message shown a URL does not point to an existing site.")
-                self.displayError(message: msg)
+                self.displayError(message: msg, moveVoiceOverFocus: true)
 
             } else {
                 self.displayError(error as NSError, sourceTag: self.sourceTag)

WordPressAuthenticator/Signin/LoginViewController.swift

@@ -82,14 +82,24 @@ open class LoginViewController: NUXViewController, LoginFacadeDelegate {
     }
 
     /// Sets the text of the error label.
-    func displayError(message: String) {
+    ///
+    /// - Parameter message: The message to display in the `errorLabel`. If empty, the `errorLabel`
+    ///     will be hidden.
+    /// - Parameter moveVoiceOverFocus: If `true`, moves the VoiceOver focus to the `errorLabel`.
+    ///     You will want to set this to `true` if the error was caused after pressing a button
+    ///     (e.g. Next button).
+    func displayError(message: String, moveVoiceOverFocus: Bool = false) {
         guard message.count > 0 else {
             errorLabel?.isHidden = true
             return
         }
         errorLabel?.isHidden = false
         errorLabel?.text = message
         errorToPresent = nil
+
+        if moveVoiceOverFocus, let errorLabel = errorLabel {
+            UIAccessibility.post(notification: .layoutChanged, argument: errorLabel)
+        }
     }
 
     private func mustShowLoginEpilogue() -> Bool {