@nent/core/dist/esm/n-data.entry.js

Functional elements to add routing, data-binding, dynamic HTML, declarative actions, audio, video, and so much more. Supercharge static HTML files into web apps without script or builds.

/*!
 * NENT 2022
 */
import { r as registerInstance, h, H as Host } from './index-916ca544.js';
import { a as actionBus, e as eventBus } from './index-f7016b94.js';
import { f as debugIf } from './logging-5a93c8af.js';
import { a as state } from './state-27a8a5bc.js';
import { a as addDataProvider, s as state$1, c as clearDataProviders } from './factory-acbf0d3d.js';
import { a as DATA_TOPIC, D as DATA_EVENTS } from './interfaces-8c5cd1b8.js';
import { D as DATA_COMMANDS } from './interfaces-4b724211.js';
import './index-4bfabbbd.js';
import './values-ddfac998.js';
import './promises-584c4ece.js';

/* It listens for actions on the `DATA_TOPIC` topic, and when it receives a
`DATA_COMMANDS.RegisterDataProvider` command, it registers the provider with the `addDataProvider`
function */
class DataListener {
  constructor() {
    this.disposeHandles = [];
  }
  /**
   * > This function is called when the plugin is initialized. It sets up an event listener for the
   * `DATA_TOPIC` event on the `actionBus` and calls `handleAction` when the event is emitted
   * @param {Window} _window - Window - The window object
   * @param {IEventEmitter} actionBus - This is the event emitter that is used to listen for actions.
   * @param {IEventEmitter} eventBus - This is the event bus that the plugin will use to emit events.
   */
  initialize(_window, actionBus, eventBus) {
    this.eventBus = eventBus;
    const handle = actionBus.on(DATA_TOPIC, e => {
      this.handleAction(e);
    });
    this.disposeHandles.push(handle);
  }
  registerProvider(name, provider) {
    var _a;
    const handle = (_a = provider.changed) === null || _a === void 0 ? void 0 : _a.on('*', () => {
      debugIf(state.debug, `data-provider: ${name} changed`);
      this.eventBus.emit(DATA_EVENTS.DataChanged, {
        provider: name,
      });
    });
    if (handle)
      this.disposeHandles.push(handle);
    addDataProvider(name, provider);
  }
  async handleAction(actionEvent) {
    debugIf(state.debug, `data-listener: action received {command:${actionEvent.command}}`);
    if (actionEvent.command === DATA_COMMANDS.RegisterDataProvider) {
      const { name, provider } = actionEvent.data;
      if (name && provider) {
        this.registerProvider(name, provider);
      }
    }
  }
  destroy() {
    this.disposeHandles.forEach(h => h === null || h === void 0 ? void 0 : h.call(this));
  }
}

const Data = class {
  constructor(hostRef) {
    registerInstance(this, hostRef);
    /**
     * Turn on debugging to get helpful messages from the
     * data action systems.
     */
    this.debug = false;
  }
  componentWillLoad() {
    debugIf(this.debug, `n-data: registering data listener`);
    if (this.debug)
      state$1.debug = true;
    this.listener = new DataListener();
    state.dataEnabled = true;
    if (this.providerTimeout)
      state$1.providerTimeout = this.providerTimeout;
    this.listener.initialize(window, actionBus, eventBus);
  }
  render() {
    return (h(Host, null, h("slot", null)));
  }
  disconnectedCallback() {
    this.listener.destroy();
    clearDataProviders();
  }
};

export { Data as n_data };