Function checkControllerPresentAndSetup

src/utils/tracked-controls.js:13–44

(component, idPrefix, queryObject)

 * @param {object} queryObject - Map of values to match.
 */
export function checkControllerPresentAndSetup (component, idPrefix, queryObject) {
  var el = component.el;
  var controller;
  var isControllerPresent = isControllerPresentWebXR;
  var isPresent;

  controller = isControllerPresent(component, idPrefix, queryObject);
  isPresent = !!controller;

  // Nothing changed, no need to do anything.
  if (isPresent === component.controllerPresent) { return isPresent; }

  component.controllerPresent = isPresent;

  // Update controller presence.
  if (isPresent) {
    component.addEventListeners();
    // On reconnect, injectTrackedControls calls setAttribute('tracked-controls', ...)
    // with unchanged data so update/updateController is skipped.
    // tracked-controls' own controllersupdated listener would call updateController,
    // but it was registered after the specific controller component's listener
    // (e.g. meta-touch-controls) so it fires too late.
    // Explicitly call updateController before emitting controllerconnected.
    var trackedControls = el.components['tracked-controls'];
    component.injectTrackedControls(controller);
    if (trackedControls) { trackedControls.updateController(); }
    el.emit('controllerconnected', {name: component.name, component: component});
  } else {
    component.removeEventListeners();
    el.emit('controllerdisconnected', {name: component.name, component: component});
  }
}

/**
 *