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Services (default)

Overview​

Services are a work in progress. As we are still in the progress of creating a non-ui maintained service, this usage may change.

contextAndUI

Example​

The simplest service return a new object that has a name property, and methods/properties that give the service its functionality. The "Factory Function" that creates the service is provided with the implementation (this is slightly different for UI Services).

const _speak = () => {
  console.warn('Speak is not implemented');
};

/**
 * Factory function to create `HelloWorldService`
 *
 * @param {object} implementation
 * @param {function} implementation.speak - Speak's implementation
 * @returns HelloWorldService
 */
export default function createHelloWorldService({ speak }) {
  return {
    name: 'HelloWorldService',
    speak: speak || _speak,
  };
}

A service, once created, can be registered with the ServicesManager to make it accessible to extensions. Similarly, the application code can access named services from the ServicesManager.

// In the application
const speak = () => {
  window.alert('HELLO WORLD');
};
const HelloWorldService = createHelloWorldService({ speak });
const servicesManager = new ServicesManager();

servicesManager.registerService(HelloWorldService);

// In an extension
const { HelloWorldService } = servicesManager.services;

if (HelloWorldService) {
  HelloWorldService.speak();
}