Add isAutoHidden config property

ANZBreadcrumbsNavigationController.podspec

@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
   s.name             = 'ANZBreadcrumbsNavigationController'
-  s.version          = '0.5.0'
+  s.version          = '0.6.0'
   s.summary          = 'Breadcrumbs navigation controller.'
   s.description      = <<-DESC
 ANZBreadcrumbsNavigationController is breadcrums navigation

ANZBreadcrumbsNavigationController/Classes/ANZBreadcrumbsNavigationConfig.swift

@@ -17,6 +17,7 @@ import Foundation
     @objc public dynamic var maxWidth: CGFloat = 320.0
     @objc public dynamic var showsHorizontalScrollIndicator: Bool = false
     @objc public dynamic var isRootDisplayed: Bool = false
+    @objc public dynamic var isAutoHidden: Bool = false
     @objc public dynamic var itemStyle: ItemStyle = ItemStyle()
 
     @objc public class ItemStyle: NSObject {

ANZBreadcrumbsNavigationController/Classes/ANZBreadcrumbsNavigationController.swift

@@ -38,19 +38,17 @@ public class ANZBreadcrumbsNavigationController: UINavigationController {
     private var containerViewHeightConstraint: NSLayoutConstraint?
 
     private var inTransition: Bool = false
+    private var inAnimation: Bool = false
 
     public override func viewDidLoad() {
         super.viewDidLoad()
-        self.setupUI()
         self.delegate = self
+
+        self.setupUI()
     }
 
     public override func viewWillAppear(_ animated: Bool) {
         super.viewWillAppear(animated)
-
-        if #available(iOS 11.0, *) {
-            self.additionalSafeAreaInsets = UIEdgeInsets(top: self.config.height, left: 0, bottom: 0, right: 0)
-        }
     }
 
     public override func viewDidAppear(_ animated: Bool) {
@@ -129,13 +127,10 @@ extension ANZBreadcrumbsNavigationController {
 
     private func setupUI() {
 
-        if #available(iOS 11.0, *) {
-            self.additionalSafeAreaInsets = UIEdgeInsets(top: self.config.height, left: 0, bottom: 0, right: 0)
-        }
-
         let container = UIView(frame: CGRect(x: 0, y: UIApplication.shared.statusBarFrame.height + self.navigationBar.frame.height, width: self.view.bounds.width, height: self.config.height))
         container.backgroundColor = self.config.backgroundColor
         container.translatesAutoresizingMaskIntoConstraints = false
+        container.isHidden = self.config.isAutoHidden
         self.view.addSubview(container)
         let heightConstraint = container.heightAnchor.constraint(equalToConstant: self.config.height)
         if #available(iOS 11.0, *) {
@@ -177,10 +172,6 @@ extension ANZBreadcrumbsNavigationController {
 
     private func updateUI(config: ANZBreadcrumbsNavigationConfig) {
 
-        if #available(iOS 11.0, *) {
-            self.additionalSafeAreaInsets = UIEdgeInsets(top: config.height, left: 0, bottom: 0, right: 0)
-        }
-
         self.containerView?.backgroundColor = config.backgroundColor
         self.containerViewHeightConstraint?.constant = config.height
         self.containerViewHeightConstraint?.isActive = true
@@ -189,6 +180,62 @@ extension ANZBreadcrumbsNavigationController {
 
         self.view.setNeedsLayout()
     }
+
+    private func showBreadcrumbsIfNeeded() {
+
+        self.notifyDidShowBreadcrumbs()
+
+        guard !self.inAnimation, let containerView = self.containerView, containerView.isHidden else {
+            return
+        }
+        self.inAnimation = true
+
+        UIView.animate(withDuration: 0.3, animations: {
+            containerView.alpha = 1.0
+        }) { _ in
+            self.inAnimation = false
+            containerView.isHidden = false
+        }
+    }
+
+    private func hideBreadcrumbsIfNeeded() {
+
+        self.notifyDidHideBreadcrumbs()
+
+        guard !self.inAnimation, let containerView = self.containerView, !containerView.isHidden else {
+            return
+        }
+        self.inAnimation = true
+
+        UIView.animate(withDuration: 0.3, animations: {
+            containerView.alpha = 0.0
+        }) { _ in
+            self.inAnimation = false
+            containerView.isHidden = true
+        }
+    }
+}
+
+// MARK: - Notification
+extension ANZBreadcrumbsNavigationController {
+
+    private func notifyDidShowBreadcrumbs() {
+
+        if #available(iOS 11.0, *), self.additionalSafeAreaInsets.top != self.config.height {
+            self.additionalSafeAreaInsets = UIEdgeInsets(top: self.config.height, left: 0, bottom: 0, right: 0)
+        }
+
+        NotificationCenter.default.post(name: .ANZBreadcrumbsDidShowBreadcrumbsView, object: self.config)
+    }
+
+    private func notifyDidHideBreadcrumbs() {
+
+        if #available(iOS 11.0, *), self.additionalSafeAreaInsets.top != 0 {
+            self.additionalSafeAreaInsets = .zero
+        }
+
+        NotificationCenter.default.post(name: .ANZBreadcrumbsDidHideBreadcrumbsView, object: self.config)
+    }
 }
 
 // MARK: - Manage list view
@@ -221,8 +268,17 @@ extension ANZBreadcrumbsNavigationController: UICollectionViewDataSource {
 
     public func numberOfSections(in collectionView: UICollectionView) -> Int {
 
-        if !self.config.isRootDisplayed && self.viewControllers.count == 1 {
-            return 0
+        if 1 >= self.viewControllers.count {
+
+            if self.config.isAutoHidden {
+                self.hideBreadcrumbsIfNeeded()
+            }
+
+            if !self.config.isRootDisplayed {
+                return 0
+            }
+        } else if self.config.isAutoHidden {
+            self.showBreadcrumbsIfNeeded()
         }
 
         return self.viewControllers.count

ANZBreadcrumbsNavigationController/Classes/NotificationName+ANZBreadscrumbs.swift

@@ -0,0 +1,15 @@
+//
+//  NotificationName+ANZBreadscrumbs.swift
+//  ANZBreadcrumbsNavigationController
+//
+//  Created by sasato on 2019/01/27.
+//
+
+import Foundation
+
+extension Notification.Name {
+
+    public static let ANZBreadcrumbsDidShowBreadcrumbsView: Notification.Name = Notification.Name("ANZBreadcrumbs.didShowBreadcrumbsView")
+
+    public static let ANZBreadcrumbsDidHideBreadcrumbsView: Notification.Name = Notification.Name("ANZBreadcrumbs.didHideBreadcrumbsView")
+}

Example/ANZBreadcrumbsNavigationController.xcodeproj/xcshareddata/xcschemes/ANZBreadcrumbsNavigationController-Example.xcscheme

@@ -40,7 +40,6 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      language = ""
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
          <TestableReference
@@ -70,7 +69,6 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      language = ""
       launchStyle = "0"
       useCustomWorkingDirectory = "NO"
       ignoresPersistentStateOnLaunch = "NO"

Example/ANZBreadcrumbsNavigationController/Base.lproj/Main.storyboard

@@ -99,6 +99,7 @@
                         <userDefinedRuntimeAttribute type="color" keyPath="config.itemStyle.textColor">
                             <color key="value" red="1" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
                         </userDefinedRuntimeAttribute>
+                        <userDefinedRuntimeAttribute type="boolean" keyPath="config.isAutoHidden" value="YES"/>
                     </userDefinedRuntimeAttributes>
                     <connections>
                         <segue destination="VFc-rK-gPj" kind="relationship" relationship="rootViewController" id="GZG-iz-MTb"/>
@@ -145,6 +146,9 @@
                         <rect key="frame" x="0.0" y="20" width="375" height="44"/>
                         <autoresizingMask key="autoresizingMask"/>
                     </navigationBar>
+                    <userDefinedRuntimeAttributes>
+                        <userDefinedRuntimeAttribute type="boolean" keyPath="config.isAutoHidden" value="NO"/>
+                    </userDefinedRuntimeAttributes>
                     <connections>
                         <segue destination="vXZ-lx-hvc" kind="relationship" relationship="rootViewController" id="Z6b-KN-aSa"/>
                     </connections>

Example/ANZBreadcrumbsNavigationController/TableViewController.swift

@@ -11,25 +11,34 @@ import UIKit
 import ANZBreadcrumbsNavigationController
 
 class TableViewController: UITableViewController {
-
+    
     override func viewDidLoad() {
         super.viewDidLoad()
+
         self.title = "Table \(self.navigationController?.viewControllers.count ?? 0)"
 
         if let navicationController = self.navigationController as? ANZBreadcrumbsNavigationController, let root = navicationController.viewControllers.first {
             if root == self {
                 let barButton = UIBarButtonItem(title: "Close", style: .plain, target: self, action: #selector(type(of: self).back))
                 navigationItem.leftBarButtonItems = [barButton]
             }
-
-            if #available(iOS 11.0, *) { } else {
-                var inset = self.tableView.contentInset
-                inset.top += navicationController.listViewHeight
-                self.tableView.contentInset = inset
-            }
         }
     }
 
+    override func viewWillAppear(_ animated: Bool) {
+        super.viewWillAppear(animated)
+
+        NotificationCenter.default.addObserver(self, selector: #selector(type(of: self).didShowBreadcrumbsViewNotified(_:)), name: .ANZBreadcrumbsDidShowBreadcrumbsView, object: nil)
+        NotificationCenter.default.addObserver(self, selector: #selector(type(of: self).didHideBreadcrumbsViewNotified(_:)), name: .ANZBreadcrumbsDidHideBreadcrumbsView, object: nil)
+
+    }
+
+    override func viewWillDisappear(_ animated: Bool) {
+        super.viewWillDisappear(animated)
+
+        NotificationCenter.default.removeObserver(self)
+    }
+
     @objc func back() {
         self.dismiss(animated: true, completion: nil)
     }
@@ -57,3 +66,38 @@ class TableViewController: UITableViewController {
     }
 
 }
+
+// MARK: - Notification
+@objc extension TableViewController {
+
+    private func didShowBreadcrumbsViewNotified(_ notification: Notification) {
+
+        guard let config = notification.object as? ANZBreadcrumbsNavigationConfig else {
+            return
+        }
+
+        if #available(iOS 11.0, *) { } else {
+            var inset = self.tableView.contentInset
+            var top = UIApplication.shared.statusBarFrame.height + config.height
+            if let navigationBar = self.navigationController?.navigationBar {
+                top += navigationBar.frame.height
+            }
+            inset.top = top
+            self.tableView.contentInset = inset
+        }
+    }
+
+    private func didHideBreadcrumbsViewNotified(_ notification: Notification) {
+
+        if #available(iOS 11.0, *) { } else {
+            var inset = self.tableView.contentInset
+            var top = UIApplication.shared.statusBarFrame.height
+            if let navigationBar = self.navigationController?.navigationBar {
+                top += navigationBar.frame.height
+            }
+            inset.top = top
+            self.tableView.contentInset = inset
+        }
+    }
+
+}

Example/ANZBreadcrumbsNavigationController/ViewController.swift

@@ -18,6 +18,7 @@ class ViewController: UIViewController {
 
     override func viewDidLoad() {
         super.viewDidLoad()
+
         self.title = "ViewController \(self.navigationController?.viewControllers.count ?? 0)"
 
         if let navicationController = self.navigationController as? ANZBreadcrumbsNavigationController {
@@ -27,10 +28,6 @@ class ViewController: UIViewController {
                     navigationItem.leftBarButtonItems = [barButton]
                 }
             }
-
-            if #available(iOS 11.0, *) { } else {
-                stackViewTopConstraint.constant = navicationController.listViewHeight
-            }
         }
     }
 

Example/Podfile.lock

@@ -1,5 +1,5 @@
 PODS:
-  - ANZBreadcrumbsNavigationController (0.5.0)
+  - ANZBreadcrumbsNavigationController (0.6.0)
 
 DEPENDENCIES:
   - ANZBreadcrumbsNavigationController (from `../`)
@@ -9,7 +9,7 @@ EXTERNAL SOURCES:
     :path: "../"
 
 SPEC CHECKSUMS:
-  ANZBreadcrumbsNavigationController: b304ce5d44aa61a802e1f65925d9584fa356c5e1
+  ANZBreadcrumbsNavigationController: 77439ecda85fd34e67aa763c8fb9dfdcc4cf7787
 
 PODFILE CHECKSUM: 14d21dd73be5a678d45c01fbc2c2f183e4908221