Support auto fill (no quicktype bar support)

passAutoFillExtension/PasscodeExtensionDisplay.swift

@@ -0,0 +1,56 @@
+//
+//  PasscodeLockDisplay.swift
+//  pass
+//
+//  Created by Yishi Lin on 14/6/17.
+//  Copyright © 2017 Bob Sun. All rights reserved.
+//
+
+import Foundation
+import passKit
+import AuthenticationServices
+
+// cancel means cancel the extension
+class PasscodeLockViewControllerForExtension: PasscodeLockViewController {
+    var originalExtensionContest: ASCredentialProviderExtensionContext?
+    public convenience init(extensionContext: ASCredentialProviderExtensionContext?) {
+        self.init()
+        originalExtensionContest = extensionContext
+    }
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        cancelButton?.removeTarget(nil, action: nil, for: .allEvents)
+        cancelButton?.addTarget(self, action: #selector(cancelExtension), for: .touchUpInside)
+    }
+    @objc func cancelExtension() {
+        originalExtensionContest?.cancelRequest(withError: NSError(domain: ASExtensionErrorDomain, code: ASExtensionError.userCanceled.rawValue))
+    }
+}
+
+class PasscodeExtensionDisplay {
+    private var isPasscodePresented = false
+    private let passcodeLockVC: PasscodeLockViewControllerForExtension
+    private let extensionContext: ASCredentialProviderExtensionContext?
+    
+    public init(extensionContext: ASCredentialProviderExtensionContext?) {
+        self.extensionContext = extensionContext
+        passcodeLockVC = PasscodeLockViewControllerForExtension(extensionContext: extensionContext)
+        passcodeLockVC.dismissCompletionCallback = { [weak self] in
+            self?.dismiss()
+        }
+        passcodeLockVC.setCancellable(true)
+    }
+    
+    // present the passcode lock view if passcode is set and the view controller is not presented
+    public func presentPasscodeLockIfNeeded(_ extensionVC: UIViewController) {
+        guard PasscodeLock.shared.hasPasscode && !isPasscodePresented == true else {
+            return
+        }
+        isPasscodePresented = true
+        extensionVC.present(passcodeLockVC, animated: true, completion: nil)
+    }
+    
+    public func dismiss(animated: Bool = true) {
+        isPasscodePresented = false
+    }
+}