react-native-reanimated/lib/commonjs/reanimated2/hook/useAnimatedKeyboard.js

More powerful alternative to Animated library for React Native.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.useAnimatedKeyboard = useAnimatedKeyboard;

var _react = require("react");

var _core = require("../core");

var _commonTypes = require("../commonTypes");

function useAnimatedKeyboard() {
  let options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {
    isStatusBarTranslucentAndroid: false
  };
  const ref = (0, _react.useRef)(null);
  const listenerId = (0, _react.useRef)(-1);
  const isSubscribed = (0, _react.useRef)(false);

  if (ref.current === null) {
    const keyboardEventData = {
      state: (0, _core.makeMutable)(_commonTypes.KeyboardState.UNKNOWN),
      height: (0, _core.makeMutable)(0)
    };
    listenerId.current = (0, _core.subscribeForKeyboardEvents)((state, height) => {
      'worklet';

      keyboardEventData.state.value = state;
      keyboardEventData.height.value = height;
    }, options);
    ref.current = keyboardEventData;
    isSubscribed.current = true;
  }

  (0, _react.useEffect)(() => {
    if (isSubscribed.current === false && ref.current !== null) {
      const keyboardEventData = ref.current; // subscribe again after Fast Refresh

      listenerId.current = (0, _core.subscribeForKeyboardEvents)((state, height) => {
        'worklet';

        keyboardEventData.state.value = state;
        keyboardEventData.height.value = height;
      }, options);
      isSubscribed.current = true;
    }

    return () => {
      (0, _core.unsubscribeFromKeyboardEvents)(listenerId.current);
      isSubscribed.current = false;
    };
  }, []);
  return ref.current;
}
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