trezor-wallet/src/actions/NotificationActions.js

/* @flow */
import * as React from 'react';
import * as NOTIFICATION from 'actions/constants/notification';

import type { Action, AsyncAction, GetState, Dispatch, RouterLocationState } from 'flowtype';
import type { CallbackAction } from 'reducers/NotificationReducer';

export type NotificationAction =
    | {
          type: typeof NOTIFICATION.ADD,
          payload: {
              +type: string,
              +title: React.Node | string,
              +message?: ?(React.Node | string),
              +cancelable: boolean,
              actions?: Array<CallbackAction>,
          },
      }
    | {
          type: typeof NOTIFICATION.CLOSE,
          payload?: {
              id?: string,
              devicePath?: string,
          },
      };

export const close = (payload: any = {}): Action => ({
    type: NOTIFICATION.CLOSE,
    payload,
});

// called from RouterService
export const clear = (
    currentParams: RouterLocationState,
    requestedParams: RouterLocationState
): AsyncAction => async (dispatch: Dispatch, getState: GetState): Promise<void> => {
    // if route has been changed from device view into something else (like other device, settings...)
    // try to remove all Notifications which are linked to previous device (they are not cancelable by user)
    if (
        currentParams.device !== requestedParams.device ||
        currentParams.deviceInstance !== requestedParams.deviceInstance
    ) {
        const entries = getState().notifications.filter(
            entry => typeof entry.devicePath === 'string'
        );
        entries.forEach(entry => {
            if (typeof entry.devicePath === 'string') {
                dispatch({
                    type: NOTIFICATION.CLOSE,
                    payload: {
                        devicePath: entry.devicePath,
                    },
                });
            }
        });
    }
};