added files via upload

Tweaks/FLEX/ObjectExplorers/Sections/Shortcuts/FLEXViewControllerShortcuts.m

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+//
+//  FLEXViewControllerShortcuts.m
+//  FLEX
+//
+//  Created by Tanner Bennett on 12/12/19.
+//  Copyright © 2020 FLEX Team. All rights reserved.
+//
+
+#import "FLEXViewControllerShortcuts.h"
+#import "FLEXObjectExplorerFactory.h"
+#import "FLEXRuntimeUtility.h"
+#import "FLEXShortcut.h"
+#import "FLEXAlert.h"
+
+@interface FLEXViewControllerShortcuts ()
+@end
+
+@implementation FLEXViewControllerShortcuts
+
+#pragma mark - Overrides
+
++ (instancetype)forObject:(UIViewController *)viewController {
+    BOOL (^vcIsInuse)(UIViewController *) = ^BOOL(UIViewController *controller) {
+        if (controller.viewIfLoaded.window) {
+            return YES;
+        }
+
+        return controller.navigationController != nil;
+    };
+    
+    return [self forObject:viewController additionalRows:@[
+        [FLEXActionShortcut title:@"Push View Controller"
+            subtitle:^NSString *(UIViewController *controller) {
+                return vcIsInuse(controller) ? @"In use, cannot push" : nil;
+            }
+            selectionHandler:^void(UIViewController *host, UIViewController *controller) {
+                if (!vcIsInuse(controller)) {
+                    [host.navigationController pushViewController:controller animated:YES];
+                } else {
+                    [FLEXAlert
+                        showAlert:@"Cannot Push View Controller"
+                        message:@"This view controller's view is currently in use."
+                        from:host
+                    ];
+                }
+            }
+            accessoryType:^UITableViewCellAccessoryType(UIViewController *controller) {
+                if (!vcIsInuse(controller)) {
+                    return UITableViewCellAccessoryDisclosureIndicator;
+                } else {
+                    return UITableViewCellAccessoryNone;
+                }
+            }
+        ]
+    ]];
+}
+
+@end