@fruits-chain/react-native-xiaoshu/lib/module/portal/portal-host.js

React Native UI library

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

/* eslint-disable react/jsx-no-constructed-context-values */

/* eslint-disable no-unmodified-loop-condition */

/* eslint-disable @typescript-eslint/explicit-member-accessibility */

/* eslint-disable @typescript-eslint/consistent-type-definitions */
import React, { createContext, Component } from 'react';
import { DeviceEventEmitter, NativeEventEmitter, StyleSheet, View } from 'react-native';
import PortalManager from './portal-manager';
export const PortalContext = /*#__PURE__*/createContext(null); // events

const addType = 'REACT_NATIVE_XIAOSHU_ADD_PORTAL';
const removeType = 'REACT_NATIVE_XIAOSHU_REMOVE_PORTAL'; // fix react native web does not support DeviceEventEmitter

const TopViewEventEmitter = DeviceEventEmitter || new NativeEventEmitter();

class PortalGuard {
  constructor() {
    _defineProperty(this, "nextKey", 10000);

    _defineProperty(this, "add", e => {
      const key = this.nextKey++;
      TopViewEventEmitter.emit(addType, e, key);
      return key;
    });

    _defineProperty(this, "remove", key => TopViewEventEmitter.emit(removeType, key));
  }

}
/**
 * portal
 */


export const portal = new PortalGuard();
/**
 * Portal host renders all of its children `Portal` elements.
 * For example, you can wrap a screen in `Portal.Host` to render items above the screen.
 * If you're using the `Provider` component, it already includes `Portal.Host`.
 *
 * ## Usage
 * ```js
 * import * as React from 'react';
 * import { Text } from 'react-native';
 * import { Portal } from '@ant-design/react-native';
 *
 * export default class MyComponent extends React.Component {
 *   render() {
 *     return (
 *       <Portal.Host>
 *         <Text>Content of the app</Text>
 *       </Portal.Host>
 *     );
 *   }
 * }
 * ```
 *
 * Here any `Portal` elements under `<App />` are rendered alongside `<App />` and will appear above `<App />` like a `Modal`.
 */

export default class PortalHost extends Component {
  constructor() {
    super(...arguments);

    _defineProperty(this, "_nextKey", 0);

    _defineProperty(this, "_queue", []);

    _defineProperty(this, "_manager", void 0);

    _defineProperty(this, "_addTypeES", void 0);

    _defineProperty(this, "_removeTypeES", void 0);

    _defineProperty(this, "_setManager", manager => {
      this._manager = manager;
    });

    _defineProperty(this, "_mount", (children, _key) => {
      const key = _key || this._nextKey++;

      if (this._manager) {
        this._manager.mount(key, children);
      } else {
        this._queue.push({
          type: 'mount',
          key,
          children
        });
      }

      return key;
    });

    _defineProperty(this, "_update", (key, children) => {
      if (this._manager) {
        this._manager.update(key, children);
      } else {
        const op = {
          type: 'mount',
          key,
          children
        };

        const index = this._queue.findIndex(o => o.type === 'mount' || o.type === 'update' && o.key === key);

        if (index > -1) {
          this._queue[index] = op;
        } else {
          this._queue.push(op);
        }
      }
    });

    _defineProperty(this, "_unmount", key => {
      if (this._manager) {
        this._manager.unmount(key);
      } else {
        this._queue.push({
          type: 'unmount',
          key
        });
      }
    });
  }

  componentDidMount() {
    const manager = this._manager;
    const queue = this._queue;
    this._addTypeES = TopViewEventEmitter.addListener(addType, this._mount);
    this._removeTypeES = TopViewEventEmitter.addListener(removeType, this._unmount);

    while (queue.length && manager) {
      const action = queue.pop();

      if (!action) {
        continue;
      } // tslint:disable-next-line:switch-default


      switch (action.type) {
        case 'mount':
          manager.mount(action.key, action.children);
          break;

        case 'update':
          manager.update(action.key, action.children);
          break;

        case 'unmount':
          manager.unmount(action.key);
          break;
      }
    }
  }

  componentWillUnmount() {
    this._addTypeES.remove();

    this._removeTypeES.remove(); // TopViewEventEmitter.removeListener(addType, this._mount)
    // TopViewEventEmitter.removeListener(removeType, this._unmount)

  }

  render() {
    return /*#__PURE__*/React.createElement(PortalContext.Provider, {
      value: {
        mount: this._mount,
        update: this._update,
        unmount: this._unmount
      }
    }, /*#__PURE__*/React.createElement(View, {
      style: styles.container,
      collapsable: false
    }, this.props.children), /*#__PURE__*/React.createElement(PortalManager, {
      ref: this._setManager
    }));
  }

}

_defineProperty(PortalHost, "displayName", 'Portal.Host');

const styles = StyleSheet.create({
  container: {
    flex: 1
  }
});
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