goog.events.EventTarget.dispatchEventInternal_ = function()

in asdoc/library/closure/goog/events/eventtarget.js [349:395]

• 35 lines of code
• 17 McCabe index (conditional complexity)

goog.events.EventTarget.dispatchEventInternal_ = function(
    target, e, opt_ancestorsTree) {
  /** @suppress {missingProperties} */
  var type = e.type || /** @type {string} */ (e);

  // If accepting a string or object, create a custom event object so that
  // preventDefault and stopPropagation work with the event.
  if (goog.isString(e)) {
    e = new goog.events.Event(e, target);
  } else if (!(e instanceof goog.events.Event)) {
    var oldEvent = e;
    e = new goog.events.Event(type, target);
    goog.object.extend(e, oldEvent);
  } else {
    e.target = e.target || target;
  }

  var rv = true, currentTarget;

  // Executes all capture listeners on the ancestors, if any.
  if (opt_ancestorsTree) {
    for (var i = opt_ancestorsTree.length - 1; !e.propagationStopped_ && i >= 0;
         i--) {
      currentTarget = e.currentTarget = opt_ancestorsTree[i];
      rv = currentTarget.fireListeners(type, true, e) && rv;
    }
  }

  // Executes capture and bubble listeners on the target.
  if (!e.propagationStopped_) {
    currentTarget = /** @type {?} */ (e.currentTarget = target);
    rv = currentTarget.fireListeners(type, true, e) && rv;
    if (!e.propagationStopped_) {
      rv = currentTarget.fireListeners(type, false, e) && rv;
    }
  }

  // Executes all bubble listeners on the ancestors, if any.
  if (opt_ancestorsTree) {
    for (i = 0; !e.propagationStopped_ && i < opt_ancestorsTree.length; i++) {
      currentTarget = e.currentTarget = opt_ancestorsTree[i];
      rv = currentTarget.fireListeners(type, false, e) && rv;
    }
  }

  return rv;
};