Add configuration to lazy load tabs

Author: joemasilotti

Demo/AppDelegate.swift

@@ -42,6 +42,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         Hotwire.config.backButtonDisplayMode = .minimal
         Hotwire.config.showDoneButtonOnModals = true
         Hotwire.config.animateReplaceActions = true
+        Hotwire.config.lazyLoadTabs = true
 #if DEBUG
         Hotwire.config.debugLoggingEnabled = true
 #endif

Source/HotwireConfig.swift

@@ -29,6 +29,9 @@ public struct HotwireConfig {
     /// Set to `true` to fade content when performing a `replace` visit.
     public var animateReplaceActions = false
 
+    /// Set to `true` to load each tab after it is selected (instead of on app launch).
+    public var lazyLoadTabs = false
+
     /// Enable or disable debug logging for Turbo visits and bridge elements
     /// connecting, disconnecting, receiving/sending messages, and more.
     public var debugLoggingEnabled = false {

Source/Turbo/ViewControllers/HotwireTabBarController.swift

@@ -37,7 +37,12 @@ open class HotwireTabBarController: UITabBarController, NavigationHandler {
     public func load(_ tabs: [HotwireTab]) {
         hotwireTabs = tabs
         setupTabs()
-        activeNavigator.start()
+
+        if Hotwire.config.lazyLoadTabs {
+            activeNavigator.start()
+        } else {
+            navigatorsByIdentifier.values.forEach { $0.start() }
+        }
     }
 
     /// Returns the navigator associated with the given tab.