fix(ios): allow enabling gesture navigation via config (#3808)

ios/Capacitor/Capacitor/CAPBridgeViewController.swift

@@ -288,6 +288,7 @@ extension CAPBridgeViewController {
         aWebView.scrollView.bounces = false
         aWebView.scrollView.contentInsetAdjustmentBehavior = configuration.contentInsetAdjustmentBehavior
         aWebView.allowsLinkPreview = configuration.allowLinkPreviews
+        aWebView.allowsBackForwardNavigationGestures = configuration.allowsBackForwardNavigationGestures
         aWebView.scrollView.isScrollEnabled = configuration.scrollingEnabled
         if let overrideUserAgent = configuration.overridenUserAgentString {
             aWebView.customUserAgent = overrideUserAgent

ios/Capacitor/Capacitor/CAPInstanceConfiguration.h

@@ -19,6 +19,7 @@ NS_SWIFT_NAME(InstanceConfiguration)
 @property (nonatomic, readonly) BOOL scrollingEnabled;
 @property (nonatomic, readonly) BOOL zoomingEnabled;
 @property (nonatomic, readonly) BOOL allowLinkPreviews;
+@property (nonatomic, readonly) BOOL allowsBackForwardNavigationGestures;
 @property (nonatomic, readonly) BOOL handleApplicationNotifications;
 @property (nonatomic, readonly) BOOL isWebDebuggable;
 @property (nonatomic, readonly) BOOL cordovaDeployDisabled;

ios/Capacitor/Capacitor/CAPInstanceConfiguration.m

@@ -31,6 +31,7 @@ - (instancetype)initWithDescriptor:(CAPInstanceDescriptor *)descriptor isDebug:(
         _scrollingEnabled = descriptor.scrollingEnabled;
         _zoomingEnabled =  descriptor.zoomingEnabled;
         _allowLinkPreviews = descriptor.allowLinkPreviews;
+        _allowsBackForwardNavigationGestures = descriptor.allowsBackForwardNavigationGestures;
         _handleApplicationNotifications = descriptor.handleApplicationNotifications;
         _contentInsetAdjustmentBehavior = descriptor.contentInsetAdjustmentBehavior;
         _appLocation = descriptor.appLocation;
@@ -69,6 +70,7 @@ - (instancetype)initWithConfiguration:(CAPInstanceConfiguration*)configuration a
         _scrollingEnabled = configuration.scrollingEnabled;
         _zoomingEnabled = configuration.zoomingEnabled;
         _allowLinkPreviews = configuration.allowLinkPreviews;
+        _allowsBackForwardNavigationGestures = configuration.allowsBackForwardNavigationGestures;
         _handleApplicationNotifications = configuration.handleApplicationNotifications;
         _isWebDebuggable = configuration.isWebDebuggable;
         _cordovaDeployDisabled = configuration.cordovaDeployDisabled;

ios/Capacitor/Capacitor/CAPInstanceDescriptor.h

@@ -93,6 +93,11 @@ NS_SWIFT_NAME(InstanceDescriptor)
  @discussion Set by @c ios.allowsLinkPreview in the configuration file. Corresponds to @c allowsLinkPreview on WKWebView.
  */
 @property (nonatomic, assign) BOOL allowLinkPreviews;
+/**
+ @brief Whether or not the web view will allow gesture navigation .
+ @discussion Set by @c ios.allowsBackForwardNavigationGestures in the configuration file. Corresponds to @c allowsBackForwardNavigationGestures on WKWebView.
+ */
+@property (nonatomic, assign) BOOL allowsBackForwardNavigationGestures;
 /**
  @brief Whether or not the Capacitor runtime will set itself as the @c UNUserNotificationCenter delegate.
  @discussion Defaults to @c true. Required to be @c true for notification plugins to work correctly. Set to @c false if your application will handle notifications independently.

ios/Capacitor/Capacitor/CAPInstanceDescriptor.m

@@ -39,6 +39,7 @@ - (void)_setDefaultsWithAppLocation:(NSURL*)location {
     _scrollingEnabled = YES;
     _zoomingEnabled = NO;
     _allowLinkPreviews = YES;
+    _allowsBackForwardNavigationGestures = NO;
     _handleApplicationNotifications = YES;
     _isWebDebuggable = NO;
     _contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;

ios/Capacitor/Capacitor/CAPInstanceDescriptor.swift

@@ -111,6 +111,9 @@ internal extension InstanceDescriptor {
             if let allowPreviews = config[keyPath: "ios.allowsLinkPreview"] as? Bool {
                 allowLinkPreviews = allowPreviews
             }
+            if let allowsNavigationGestures = config[keyPath: "ios.allowsBackForwardNavigationGestures"] as? Bool {
+                allowsBackForwardNavigationGestures = allowsNavigationGestures
+            }
             if let scrollEnabled = config[keyPath: "ios.scrollEnabled"] as? Bool {
                 scrollingEnabled = scrollEnabled
             }