Use ConcreteStateTeller in RCTInputAccessoryComponentView

Summary: Changelog: [Internal]

Reviewed By: JoshuaGross

Differential Revision: D23239095

fbshipit-source-id: a3324b5df6e6bd7508d74b66de9235852d828bbd

React/Fabric/Mounting/ComponentViews/InputAccessory/RCTInputAccessoryComponentView.mm

@@ -40,7 +40,7 @@ static UIView<RCTBackedTextInputViewProtocol> *_Nullable RCTFindTextInputWithNat
 }
 
 @implementation RCTInputAccessoryComponentView {
-  InputAccessoryShadowNode::ConcreteState::Shared _state;
+  InputAccessoryShadowNode::ConcreteStateTeller _stateTeller;
   RCTInputAccessoryContentView *_contentView;
   RCTSurfaceTouchHandler *_touchHandler;
   UIView<RCTBackedTextInputViewProtocol> __weak *_textInput;
@@ -117,16 +117,15 @@ static UIView<RCTBackedTextInputViewProtocol> *_Nullable RCTFindTextInputWithNat
   self.hidden = true;
 }
 
-- (void)updateState:(const facebook::react::State::Shared &)state
-           oldState:(const facebook::react::State::Shared &)oldState
+- (void)updateState:(State::Shared const &)state oldState:(State::Shared const &)oldState
 {
-  _state = std::static_pointer_cast<InputAccessoryShadowNode::ConcreteState const>(state);
-  CGSize oldScreenSize = RCTCGSizeFromSize(_state->getData().screenSize);
+  _stateTeller.setConcreteState(state);
+  CGSize oldScreenSize = RCTCGSizeFromSize(_stateTeller.getData().value().screenSize);
   CGSize screenSize = [[UIScreen mainScreen] bounds].size;
   screenSize.height = std::nan("");
   if (oldScreenSize.width != screenSize.width) {
     auto stateData = InputAccessoryState{RCTSizeFromCGSize(screenSize)};
-    _state->updateState(std::move(stateData));
+    _stateTeller.updateState(std::move(stateData));
   }
 }
 
@@ -141,7 +140,7 @@ static UIView<RCTBackedTextInputViewProtocol> *_Nullable RCTFindTextInputWithNat
 - (void)prepareForRecycle
 {
   [super prepareForRecycle];
-  _state.reset();
+  _stateTeller.invalidate();
   _textInput = nil;
 }