react-native-ui-lib/typings/nativeComponents/SafeArea/SafeAreaInsetsManager.js

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/* eslint no-underscore-dangle: 0 */
import { NativeModules, NativeEventEmitter } from "react-native";
import _ from "lodash";
let SafeAreaInsetsCache = null;
const NativeSafeAreaManager = NativeModules.SafeAreaManager;
class SafeAreaInsetsManager {
    constructor() {
        this._defaultInsets = { top: 0, left: 0, bottom: 0, right: 0 };
        this._safeAreaInsets = this._defaultInsets;
        this._safeAreaChangedDelegates = [];
        this.addSafeAreaChangedListener();
    }
    addSafeAreaChangedListener() {
        if (!NativeSafeAreaManager) {
            return;
        }
        const NativeSafeAreaEvents = new NativeEventEmitter(NativeSafeAreaManager);
        NativeSafeAreaEvents.addListener("SafeAreaInsetsDidChangeEvent", safeAreaInsets => {
            SafeAreaInsetsCache = safeAreaInsets;
            this._safeAreaInsets = SafeAreaInsetsCache;
            _.forEach(this._safeAreaChangedDelegates, delegate => {
                if (delegate.onSafeAreaInsetsDidChangeEvent) {
                    delegate.onSafeAreaInsetsDidChangeEvent(this._safeAreaInsets);
                }
                else {
                    console.warn("ERROR", "SafeAreaInsetsManager", "safe area changed delegate was added, but it does not implement the onSafeAreaInsetsDidChangeEvent method"); //eslint-disable-line
                }
            });
        });
    }
    async _updateInsets() {
        if (NativeSafeAreaManager && SafeAreaInsetsCache === null) {
            SafeAreaInsetsCache = await NativeSafeAreaManager.getSafeAreaInsets();
            this._safeAreaInsets = SafeAreaInsetsCache;
        }
    }
    async getSafeAreaInsets() {
        await this._updateInsets();
        return this._safeAreaInsets;
    }
    addSafeAreaChangedDelegate(delegate) {
        this._safeAreaChangedDelegates.push(delegate);
    }
    removeSafeAreaChangedDelegate(delegateToRemove) {
        _.remove(this._safeAreaChangedDelegates, currentDelegate => {
            return currentDelegate === delegateToRemove;
        });
    }
    get defaultInsets() {
        return this._defaultInsets;
    }
}
export default new SafeAreaInsetsManager();