comments and new functions for setting

MVMCoreUI/Containers/SplitViewController/MVMCoreUISplitViewController+Extension.swift

@@ -12,6 +12,64 @@ import UIKit
 // Navigation bar update functions
 public extension MVMCoreUISplitViewController {
     
+    /// Updates the state for various controls (navigation, tab, progress) for the controller.
+    func updateState(with viewController: UIViewController) {
+        guard let navigationController = navigationController,
+              navigationController.isDisplayed(viewController: viewController) else { return }
+        updateNavigationBarFor(viewController: viewController)
+        updateProgressBar(for: viewController)
+        updateTabBar(for: viewController)
+    }
+    
+    // MARK: - Progress Bar
+    /// Updates the progress bar based on the page json for the view controller.
+    func updateProgressBar(for viewController: UIViewController) {
+        guard let viewController = viewController as? MVMCoreViewControllerProtocol else { return }
+        var progress: Float = 0.0
+        if let progressString = viewController.loadObject??.pageJSON?.optionalStringForKey(KeyProgressPercent),
+            let floatValue = Float(progressString) {
+            progress = floatValue/100
+        }
+        setBottomProgressBarProgress(progress)
+    }
+    
+    // MARK: - Tab Bar
+    /// Updates the tab bar based on the page json for the view controller.
+    func updateTabBar(for viewController: UIViewController) {
+        let mvmViewController = viewController as? MVMCoreViewControllerProtocol
+        tabBar?.delegateObject = mvmViewController?.delegateObject?() as? MVMCoreUIDelegateObject
+        
+        let navigationIndex = (MVMCoreNavigationHandler.shared()?.getViewControllers(for: navigationController)?.count ?? 1) - 1
+        
+        // Set the highlighted index. In terms of priority, Page > Action > Previous.
+        if let index = ((viewController as? PageProtocol)?.pageModel as? TabPageModelProtocol)?.tabBarIndex {
+            tabBar?.highlightTab(at: index)
+        } else if let index = mvmViewController?.loadObject??.requestParameters?.actionMap?["tabBarIndex"] as? Int {
+            tabBar?.highlightTab(at: index)
+        } else if navigationIndex < tabBarIndices.count {
+            let index = (tabBarIndices[navigationIndex] as! NSNumber).intValue
+            tabBar?.highlightTab(at: index)
+        }
+        
+        // Store current tab index, so we can switch back when going back in hierarchy.
+        if tabBarIndices.count > 0 {
+            tabBarIndices.removeObjects(in: NSRange(location: navigationIndex, length: tabBarIndices.count - navigationIndex))
+        }
+        if let currentIndex = tabBar?.currentTabIndex() {
+            tabBarIndices.add(NSNumber(integerLiteral: currentIndex))
+        }
+
+        // Show/Hide. In terms of priority, Page > Action > Always Show.
+        if let hidden = ((viewController as? PageProtocol)?.pageModel as? TabPageModelProtocol)?.tabBarHidden {
+            updateTabBarShowing(!hidden)
+        } else if let hidden = mvmViewController?.loadObject??.requestParameters?.actionMap?["tabBarHidden"] as? Bool {
+            updateTabBarShowing(!hidden)
+        } else {
+            updateTabBarShowing(true)
+        }
+    }
+    
+    // MARK: - Navigation Bar
     /// Convenience function. Sets the navigation and split view properties for the view controller. Panel access is determined if view controller is a detail view protocol.
     func setNavigationBar(for viewController: UIViewController, navigationController: UINavigationController, navigationItemModel: NavigationItemModelProtocol) {
         guard navigationController == self.navigationController,
@@ -122,6 +180,7 @@ public extension MVMCoreUISplitViewController {
         setStatusBarForCurrentViewController()
     }
     
+    // MARK: - Status Bar
     /// Returns the bar style for the background color. Light if on a dark background, otherwise default.
     func getStatusBarStyle(for backgroundColor: UIColor?) -> UIStatusBarStyle {
         var greyScale: CGFloat = 0
@@ -155,10 +214,10 @@ extension MVMCoreUISplitViewController: MVMCoreViewManagerProtocol {
     
     public func willDisplay(_ viewController: UIViewController) {
         setupPanels()
-        updateNavigationBarFor(viewController: viewController)
+        updateState(with: viewController)
     }
     
     public func newDataReceived(in viewController: UIViewController) {
-        updateNavigationBarFor(viewController: viewController)
+        updateState(with: viewController)
     }
 }