mutants-appfx/src/UIFunction.js

appfx module

import {
  action,
  runInAction,
  observable,
} from 'mobx';
import DataProviderManager from './DataProviderManager';

class FunctionModel {
  @observable access;
  @observable operations = [];

  has(operation) {
    return this.operations.indexOf(operation) > -1;
  }

  constructor(obj){
    this.access = obj.access;
    this.operations = obj.operations || [];
  }
}

const NoFunction = {
  operations: [],

  has() {
    return false;
  }
}

class UIFunction {
  @observable items = observable.map();

  get(access) {
    return this.items.get(access) || NoFunction;
  }

  @action async loadUIFunction({mid}) {
    if (this.items.has(mid)){
      return;
    }
    const functions = (await DataProviderManager.getFunction({access:mid}));
    runInAction(()=>{
      this.items.set(mid, new FunctionModel(functions));
    });
  }
}

export default new UIFunction();