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node_modules/react-native/Libraries/Text/TextInput/RCTInputAccessoryViewContent.mm

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+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <React/RCTInputAccessoryViewContent.h>
+
+#ifndef RCT_REMOVE_LEGACY_ARCH
+
+#import <React/UIView+React.h>
+
+@implementation RCTInputAccessoryViewContent {
+  UIView *_safeAreaContainer;
+  NSLayoutConstraint *_heightConstraint;
+}
+
+- (instancetype)init
+{
+  if (self = [super init]) {
+    _safeAreaContainer = [UIView new];
+    [self addSubview:_safeAreaContainer];
+
+    // Use autolayout to position the view properly and take into account
+    // safe area insets on iPhone X.
+    // TODO: Support rotation, anchor to left and right without breaking frame x coordinate (T27974328).
+    self.autoresizingMask = UIViewAutoresizingFlexibleHeight;
+    _safeAreaContainer.translatesAutoresizingMaskIntoConstraints = NO;
+
+    _heightConstraint = [_safeAreaContainer.heightAnchor constraintEqualToConstant:0];
+    _heightConstraint.active = YES;
+
+    [_safeAreaContainer.bottomAnchor constraintEqualToAnchor:self.safeAreaLayoutGuide.bottomAnchor].active = YES;
+    [_safeAreaContainer.topAnchor constraintEqualToAnchor:self.safeAreaLayoutGuide.topAnchor].active = YES;
+    [_safeAreaContainer.leadingAnchor constraintEqualToAnchor:self.leadingAnchor].active = YES;
+    [_safeAreaContainer.trailingAnchor constraintEqualToAnchor:self.trailingAnchor].active = YES;
+  }
+  return self;
+}
+
+- (CGSize)intrinsicContentSize
+{
+  // This is needed so the view size is based on autolayout constraints.
+  return CGSizeZero;
+}
+
+- (void)reactSetFrame:(CGRect)frame
+{
+  // We still need to set the frame here, otherwise it won't be
+  // measured until moved to the window during the keyboard opening
+  // animation. If this happens, the height will be animated from 0 to
+  // its actual size and we don't want that.
+  [self setFrame:frame];
+  [_safeAreaContainer setFrame:frame];
+
+  _heightConstraint.constant = frame.size.height;
+  [self layoutIfNeeded];
+}
+
+- (void)insertReactSubview:(UIView *)subview atIndex:(NSInteger)index
+{
+  [super insertReactSubview:subview atIndex:index];
+  [_safeAreaContainer insertSubview:subview atIndex:index];
+}
+
+- (void)removeReactSubview:(UIView *)subview
+{
+  [super removeReactSubview:subview];
+  [subview removeFromSuperview];
+  if ([[_safeAreaContainer subviews] count] == 0 && [self isFirstResponder]) {
+    [self resignFirstResponder];
+  }
+}
+
+@end
+
+#endif // RCT_REMOVE_LEGACY_ARCH