added files via upload

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

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+//
+//  FLEXViewShortcuts.m
+//  FLEX
+//
+//  Created by Tanner Bennett on 12/11/19.
+//  Copyright © 2020 FLEX Team. All rights reserved.
+//
+
+#import "FLEXViewShortcuts.h"
+#import "FLEXShortcut.h"
+#import "FLEXRuntimeUtility.h"
+#import "FLEXObjectExplorerFactory.h"
+#import "FLEXImagePreviewViewController.h"
+
+@interface FLEXViewShortcuts ()
+@property (nonatomic, readonly) UIView *view;
+@end
+
+@implementation FLEXViewShortcuts
+
+#pragma mark - Internal
+
+- (UIView *)view {
+    return self.object;
+}
+
++ (UIViewController *)viewControllerForView:(UIView *)view {
+    NSString *viewDelegate = @"viewDelegate";
+    if ([view respondsToSelector:NSSelectorFromString(viewDelegate)]) {
+        return [view valueForKey:viewDelegate];
+    }
+
+    return nil;
+}
+
++ (UIViewController *)viewControllerForAncestralView:(UIView *)view {
+    NSString *_viewControllerForAncestor = @"_viewControllerForAncestor";
+    if ([view respondsToSelector:NSSelectorFromString(_viewControllerForAncestor)]) {
+        return [view valueForKey:_viewControllerForAncestor];
+    }
+
+    return nil;
+}
+
++ (UIViewController *)nearestViewControllerForView:(UIView *)view {
+    return [self viewControllerForView:view] ?: [self viewControllerForAncestralView:view];
+}
+
+
+#pragma mark - Overrides
+
++ (instancetype)forObject:(UIView *)view {
+    // In the past, FLEX would not hold a strong reference to something like this.
+    // After using FLEX for so long, I am certain it is more useful to eagerly
+    // reference something as useful as a view controller so that the reference
+    // is not lost and swept out from under you before you can access it.
+    //
+    // The alternative here is to use a future in place of `controller` which would
+    // dynamically grab a reference to the view controller. 99% of the time, however,
+    // it is not all that useful. If you need it to refresh, you can simply go back
+    // and go forward again and it will show if the view controller is nil or changed.
+    UIViewController *controller = [FLEXViewShortcuts nearestViewControllerForView:view];
+
+    return [self forObject:view additionalRows:@[
+        [FLEXActionShortcut title:@"Nearest View Controller"
+            subtitle:^NSString *(id view) {
+                return [FLEXRuntimeUtility safeDescriptionForObject:controller];
+            }
+            viewer:^UIViewController *(id view) {
+                return [FLEXObjectExplorerFactory explorerViewControllerForObject:controller];
+            }
+            accessoryType:^UITableViewCellAccessoryType(id view) {
+                return controller ? UITableViewCellAccessoryDisclosureIndicator : UITableViewCellAccessoryNone;
+            }
+        ],
+        [FLEXActionShortcut title:@"Preview Image" subtitle:^NSString *(UIView *view) {
+                return !CGRectIsEmpty(view.bounds) ? @"" : @"Unavailable with empty bounds";
+            }
+            viewer:^UIViewController *(UIView *view) {
+                return [FLEXImagePreviewViewController previewForView:view];
+            }
+            accessoryType:^UITableViewCellAccessoryType(UIView *view) {
+                // Disable preview if bounds are CGRectZero
+                return !CGRectIsEmpty(view.bounds) ? UITableViewCellAccessoryDisclosureIndicator : UITableViewCellAccessoryNone;
+            }
+        ]
+    ]];
+}
+
+@end