ant-design/components/message/index.tsx

import * as React from 'react';
import classNames from 'classnames';
import RCNotification from 'rc-notification';
import {
  NotificationInstance as RCNotificationInstance,
  NoticeContent,
} from 'rc-notification/lib/Notification';
import LoadingOutlined from '@ant-design/icons/LoadingOutlined';
import ExclamationCircleFilled from '@ant-design/icons/ExclamationCircleFilled';
import CloseCircleFilled from '@ant-design/icons/CloseCircleFilled';
import CheckCircleFilled from '@ant-design/icons/CheckCircleFilled';
import InfoCircleFilled from '@ant-design/icons/InfoCircleFilled';
import createUseMessage from './hooks/useMessage';

type NoticeType = 'info' | 'success' | 'error' | 'warning' | 'loading';

let messageInstance: RCNotificationInstance | null;
let defaultDuration = 3;
let defaultTop: number;
let key = 1;
let localPrefixCls = 'ant-message';
let transitionName = 'move-up';
let getContainer: () => HTMLElement;
let maxCount: number;
let rtl = false;

export function getKeyThenIncreaseKey() {
  return key++;
}

export interface ConfigOptions {
  top?: number;
  duration?: number;
  prefixCls?: string;
  getContainer?: () => HTMLElement;
  transitionName?: string;
  maxCount?: number;
  rtl?: boolean;
}

function setMessageConfig(options: ConfigOptions) {
  if (options.top !== undefined) {
    defaultTop = options.top;
    messageInstance = null; // delete messageInstance for new defaultTop
  }
  if (options.duration !== undefined) {
    defaultDuration = options.duration;
  }
  if (options.prefixCls !== undefined) {
    localPrefixCls = options.prefixCls;
  }
  if (options.getContainer !== undefined) {
    getContainer = options.getContainer;
  }
  if (options.transitionName !== undefined) {
    transitionName = options.transitionName;
    messageInstance = null; // delete messageInstance for new transitionName
  }
  if (options.maxCount !== undefined) {
    maxCount = options.maxCount;
    messageInstance = null;
  }
  if (options.rtl !== undefined) {
    rtl = options.rtl;
  }
}

function getRCNotificationInstance(
  args: ArgsProps,
  callback: (info: { prefixCls: string; instance: RCNotificationInstance }) => void,
) {
  const prefixCls = args.prefixCls || localPrefixCls;
  if (messageInstance) {
    callback({
      prefixCls,
      instance: messageInstance,
    });
    return;
  }
  RCNotification.newInstance(
    {
      prefixCls,
      transitionName,
      style: { top: defaultTop }, // 覆盖原来的样式
      getContainer,
      maxCount,
    },
    (instance: any) => {
      if (messageInstance) {
        callback({
          prefixCls,
          instance: messageInstance,
        });
        return;
      }
      messageInstance = instance;
      callback({
        prefixCls,
        instance,
      });
    },
  );
}

export interface ThenableArgument {
  (val: any): void;
}

export interface MessageType {
  (): void;
  then: (fill: ThenableArgument, reject: ThenableArgument) => Promise<void>;
  promise: Promise<void>;
}

const typeToIcon = {
  info: InfoCircleFilled,
  success: CheckCircleFilled,
  error: CloseCircleFilled,
  warning: ExclamationCircleFilled,
  loading: LoadingOutlined,
};
export interface ArgsProps {
  content: React.ReactNode;
  duration: number | null;
  type: NoticeType;
  prefixCls?: string;
  onClose?: () => void;
  icon?: React.ReactNode;
  key?: string | number;
  style?: React.CSSProperties;
  className?: string;
}

function getRCNoticeProps(args: ArgsProps, prefixCls: string): NoticeContent {
  const duration = args.duration !== undefined ? args.duration : defaultDuration;
  const IconComponent = typeToIcon[args.type];
  const messageClass = classNames(`${prefixCls}-custom-content`, {
    [`${prefixCls}-${args.type}`]: args.type,
    [`${prefixCls}-rtl`]: rtl === true,
  });
  return {
    key: args.key,
    duration,
    style: args.style || {},
    className: args.className,
    content: (
      <div className={messageClass}>
        {args.icon || (IconComponent && <IconComponent />)}
        <span>{args.content}</span>
      </div>
    ),
    onClose: args.onClose,
  };
}

function notice(args: ArgsProps): MessageType {
  const target = args.key || key++;
  const closePromise = new Promise(resolve => {
    const callback = () => {
      if (typeof args.onClose === 'function') {
        args.onClose();
      }
      return resolve(true);
    };

    getRCNotificationInstance(args, ({ prefixCls, instance }) => {
      instance.notice(getRCNoticeProps({ ...args, key: target, onClose: callback }, prefixCls));
    });
  });
  const result: any = () => {
    if (messageInstance) {
      messageInstance.removeNotice(target);
    }
  };
  result.then = (filled: ThenableArgument, rejected: ThenableArgument) =>
    closePromise.then(filled, rejected);
  result.promise = closePromise;
  return result;
}

type ConfigContent = React.ReactNode | string;
type ConfigDuration = number | (() => void);
type JointContent = ConfigContent | ArgsProps;
export type ConfigOnClose = () => void;

function isArgsProps(content: JointContent): content is ArgsProps {
  return (
    Object.prototype.toString.call(content) === '[object Object]' &&
    !!(content as ArgsProps).content
  );
}

const api: any = {
  open: notice,
  config: setMessageConfig,
  destroy() {
    if (messageInstance) {
      messageInstance.destroy();
      messageInstance = null;
    }
  },
};

export function attachTypeApi(originalApi: any, type: string) {
  originalApi[type] = (
    content: JointContent,
    duration?: ConfigDuration,
    onClose?: ConfigOnClose,
  ) => {
    if (isArgsProps(content)) {
      return originalApi.open({ ...content, type });
    }

    if (typeof duration === 'function') {
      onClose = duration;
      duration = undefined;
    }

    return originalApi.open({ content, duration, type, onClose });
  };
}

['success', 'info', 'warning', 'error', 'loading'].forEach(type => attachTypeApi(api, type));

api.warn = api.warning;
api.useMessage = createUseMessage(getRCNotificationInstance, getRCNoticeProps);

export interface MessageInstance {
  info(content: JointContent, duration?: ConfigDuration, onClose?: ConfigOnClose): MessageType;
  success(content: JointContent, duration?: ConfigDuration, onClose?: ConfigOnClose): MessageType;
  error(content: JointContent, duration?: ConfigDuration, onClose?: ConfigOnClose): MessageType;
  warning(content: JointContent, duration?: ConfigDuration, onClose?: ConfigOnClose): MessageType;
  loading(content: JointContent, duration?: ConfigDuration, onClose?: ConfigOnClose): MessageType;
  open(args: ArgsProps): MessageType;
}

export interface MessageApi extends MessageInstance {
  warn(content: JointContent, duration?: ConfigDuration, onClose?: ConfigOnClose): MessageType;
  config(options: ConfigOptions): void;
  destroy(): void;
  useMessage(): [MessageInstance, React.ReactElement];
}

export default api as MessageApi;