@nent/core/dist/cjs/n-data.cjs.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
 */
'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

const index = require('./index-1829aebc.js');
const index$1 = require('./index-637e8c28.js');
const logging = require('./logging-37c154cf.js');
const state = require('./state-f97ff0e6.js');
const factory = require('./factory-0d7ddff9.js');
const interfaces = require('./interfaces-95d0415a.js');
const interfaces$1 = require('./interfaces-69054d94.js');
require('./index-96f3ab3f.js');
require('./values-b2399e33.js');
require('./promises-463f4e01.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(interfaces.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('*', () => {
      logging.debugIf(state.state.debug, `data-provider: ${name} changed`);
      this.eventBus.emit(interfaces.DATA_EVENTS.DataChanged, {
        provider: name,
      });
    });
    if (handle)
      this.disposeHandles.push(handle);
    factory.addDataProvider(name, provider);
  }
  async handleAction(actionEvent) {
    logging.debugIf(state.state.debug, `data-listener: action received {command:${actionEvent.command}}`);
    if (actionEvent.command === interfaces$1.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) {
    index.registerInstance(this, hostRef);
    /**
     * Turn on debugging to get helpful messages from the
     * data action systems.
     */
    this.debug = false;
  }
  componentWillLoad() {
    logging.debugIf(this.debug, `n-data: registering data listener`);
    if (this.debug)
      factory.state.debug = true;
    this.listener = new DataListener();
    state.state.dataEnabled = true;
    if (this.providerTimeout)
      factory.state.providerTimeout = this.providerTimeout;
    this.listener.initialize(window, index$1.actionBus, index$1.eventBus);
  }
  render() {
    return (index.h(index.Host, null, index.h("slot", null)));
  }
  disconnectedCallback() {
    this.listener.destroy();
    factory.clearDataProviders();
  }
};

exports.n_data = Data;