iOS: add navigation search for launch dev mode vc

doric-iOS/Devkit/Classes/DoricDev.h

@@ -45,6 +45,8 @@ NS_ASSUME_NONNULL_BEGIN
 
 - (void)openDevMode;
 
+- (void)openDevMode:(UIViewController *)vc;
+
 - (void)closeDevMode;
 
 - (BOOL)isInDevMode;
@@ -72,6 +74,9 @@ NS_ASSUME_NONNULL_BEGIN
 - (void)addStatusCallback:(id <DoricDevStatusCallback>)callback;
 
 - (void)removeStatusCallback:(id <DoricDevStatusCallback>)callback;
+
+UIViewController* _Nonnull findBestViewController(UIViewController* _Nonnull vc);
+
 @end
 
 NS_ASSUME_NONNULL_END

doric-iOS/Devkit/Classes/DoricDev.m

@@ -27,6 +27,7 @@
 #import "DoricDebugDriver.h"
 #import "DoricDevViewController.h"
 #import "DoricDevMonitor.h"
+#import "DoricUtil.h"
 
 @interface DoricContextDebuggable : NSObject
 @property(nonatomic, weak) DoricContext *doricContext;
@@ -104,6 +105,19 @@ - (void)openDevMode {
     [navigationController pushViewController:devViewController animated:NO];
 }
 
+- (void)openDevMode:(UIViewController *)vc {
+    DoricDevViewController *devViewController = [DoricDevViewController new];
+
+    UIViewController *viewController = findBestViewController(vc);
+    UINavigationController *navigationController;
+    if ([viewController isKindOfClass:[UINavigationController class]]) {
+        navigationController = (UINavigationController *) viewController;
+    } else {
+        navigationController = viewController.navigationController;
+    }
+    [navigationController pushViewController:devViewController animated:NO];
+}
+
 - (void)closeDevMode {
     [self stopDebugging:YES];
     if (self.wsClient) {
@@ -259,4 +273,36 @@ - (NSString *)ip {
             stringByReplacingOccurrencesOfString:@":7777"
                                       withString:@""];
 }
+
+UIViewController* _Nonnull findBestViewController(UIViewController* _Nonnull vc) {
+    if (vc.presentedViewController && ![vc.presentedViewController isKindOfClass:[UIAlertController class]]) {
+        // Return presented view controller
+        return findBestViewController(vc.presentedViewController);
+    } else if ([vc isKindOfClass:[UISplitViewController class]]) {
+        // Return right hand side
+        UISplitViewController* svc = (UISplitViewController*) vc;
+        if (svc.viewControllers.count > 0)
+            return findBestViewController(svc.viewControllers.lastObject);
+        else
+            return vc;
+    } else if ([vc isKindOfClass:[UINavigationController class]]) {
+        // Return top view
+        UINavigationController* svc = (UINavigationController*) vc;
+        if (svc.viewControllers.count > 0)
+            return findBestViewController(svc.topViewController);
+        else
+            return vc;
+    } else if ([vc isKindOfClass:[UITabBarController class]]) {
+        // Return visible view
+        UITabBarController* svc = (UITabBarController*) vc;
+        if (svc.viewControllers.count > 0)
+            return findBestViewController(svc.selectedViewController);
+        else
+            return vc;
+    } else  {
+        // Unknown view controller type, return last child view controller
+        return vc;
+    }
+}
+
 @end

doric-iOS/Example/Example/ViewController.m

@@ -69,7 +69,7 @@ - (BOOL)isSimulator {
 
 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
     if (indexPath.row == 0) {
-        [[DoricDev instance] openDevMode];
+        [[DoricDev instance] openDevMode:self];
         return;
     }
     NSString *file = self.demoFilePaths[(NSUInteger) indexPath.row];