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node_modules/react-native-screens/ios/gamma/split-view/RNSSplitViewScreenShadowStateProxy.h

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+#pragma once
+
+#import <Foundation/Foundation.h>
+
+#if defined(__cplusplus)
+#import <react/renderer/core/State.h>
+
+namespace react = facebook::react;
+#endif // __cplusplus
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class RNSSplitViewScreenComponentView;
+
+/**
+ * @class RNSSplitViewScreenShadowStateProxy
+ * @brief Manages communication between native UIView layout and associated React Native ShadowNode state.
+ *
+ * This proxy enables RNSSplitViewScreenComponentView to propagate visual and layout-level state
+ * back to the Shadow Tree via RNSSplitViewScreenShadowNode.
+ */
+@interface RNSSplitViewScreenShadowStateProxy : NSObject
+
+/**
+ * @brief Triggers a shadow state update for the given SplitViewScreen component.
+ *
+ * Internally uses the component’s frame in UIWindow coordinates to update the Shadow Tree state.
+ *
+ * @param screenComponentView An instance of RNSSplitViewScreenComponentView whose state should be updated.
+ */
+- (void)updateShadowStateOfComponent:(RNSSplitViewScreenComponentView *)screenComponentView;
+
+/**
+ * @brief Triggers a shadow state update for the given SplitViewScreen component in the context of a given ancestor
+ * view.
+ *
+ * Converts the split view screen's local frame to coordinates of the specified ancestor view
+ * before applying the update to the Shadow Tree. If the ancestor haven't been defined frame is calculated relatively to
+ * the UIWindow.
+ *
+ * @param screenComponentView An instance of RNSSplitViewScreenComponentView whose state should be updated.
+ * @param ancestorView An optional UIView in whose coordinate space the frame should be computed.
+ */
+- (void)updateShadowStateOfComponent:(RNSSplitViewScreenComponentView *)screenComponentView
+             inContextOfAncestorView:(UIView *_Nullable)ancestorView;
+
+/**
+ * @brief Send an update to ShadowNode state with given frame if needed.
+ *
+ * Converts the frame to coordinates of the specified ancestor view,
+ * before applying the update to the Shadow Tree.
+ *
+ * @param screenComponentView an instance of RNSSplitViewScreenComponentView whose state should be updated,
+ * @param frame frame to update the shadow state with; it must be in coordinate system of `screenComponentView`,
+ * @param ancestorView coordinate-system provider view, relative to which the frame should be converted before sending
+ * the update.
+ */
+- (void)updateShadowStateOfComponent:(RNSSplitViewScreenComponentView *)screenComponentView
+                           withFrame:(CGRect)frame
+             inContextOfAncestorView:(nonnull UIView *)ancestorView;
+
+/**
+ * @brief Send an update to ShadowNode state with given layout metrics.
+ *
+ * Updates size and origin in the ShadowNode state, if changed.
+ *
+ * @param frame A CGRect defining the component's layout metrics.
+ */
+- (void)updateShadowStateWithFrame:(CGRect)frame;
+
+@end
+
+#pragma mark - Hidden from Swift
+
+#if defined(__cplusplus)
+
+@interface RNSSplitViewScreenShadowStateProxy ()
+
+- (void)updateState:(react::State::Shared const &)state oldState:(react::State::Shared const &)oldState;
+
+@end
+
+#endif // __cplusplus
+NS_ASSUME_NONNULL_END