Rename SonarKitLayoutPlugin to FlipperKitLayoutPlugin

Summary: Renames SonarKitLayoutPlugin to FlipperKitLayoutPlugin

Reviewed By: passy

Differential Revision: D9949785

fbshipit-source-id: 8cfde4dfad3e34038d2f66f0ce4393db9d83ef60

iOS/Plugins/FlipperKitLayoutPlugin/FlipperKitLayoutPlugin/SKInvalidation.m

@@ -0,0 +1,57 @@
+/*
+ *  Copyright (c) 2018-present, Facebook, Inc.
+ *
+ *  This source code is licensed under the MIT license found in the LICENSE
+ *  file in the root directory of this source tree.
+ *
+ */
+#if FB_SONARKIT_ENABLED
+
+#import <UIKit/UIKit.h>
+
+#import "SKInvalidation.h"
+#import "UIView+SKInvalidation.h"
+#import "UICollectionView+SKInvalidation.h"
+
+@implementation SKInvalidation
+
++ (instancetype)sharedInstance {
+  static SKInvalidation *sInstance = nil;
+
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    sInstance = [SKInvalidation new];
+  });
+
+  return sInstance;
+}
+
++ (void)enableInvalidations {
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    [UIView enableInvalidation];
+    [UICollectionView enableInvalidations];
+
+    [[NSNotificationCenter defaultCenter] addObserver:self
+        selector:@selector(windowDidBecomeVisible:)
+            name:UIWindowDidBecomeVisibleNotification
+          object:nil];
+
+    [[NSNotificationCenter defaultCenter] addObserver:self
+        selector:@selector(windowDidBecomeHidden:)
+            name:UIWindowDidBecomeHiddenNotification
+          object:nil];
+  });
+}
+
++ (void)windowDidBecomeVisible:(NSNotification*)notification {
+  [[SKInvalidation sharedInstance].delegate invalidateNode:[notification.object nextResponder]];
+}
+
++ (void)windowDidBecomeHidden:(NSNotification*)notification {
+  [[SKInvalidation sharedInstance].delegate invalidateNode:[notification.object nextResponder]];
+}
+
+@end
+
+#endif