Function constructSelectEvent

lib/assets/react-source/development/react.js:13345–13369

* Poll selection to see whether it's changed. * * @param {object} nativeEvent * @param {object} nativeEventTarget * @return {?SyntheticEvent}

(nativeEvent, nativeEventTarget)

	function constructSelectEvent(nativeEvent, nativeEventTarget) {
	  // Ensure we have the right element, and that the user is not dragging a
	  // selection (this matches native `select` event behavior). In HTML5, select
	  // fires only on input and textarea thus if there's no focused element we
	  // won't dispatch.
	  var doc = getEventTargetDocument(nativeEventTarget);

	  if (mouseDown || activeElement$1 == null || activeElement$1 !== getActiveElement(doc)) {
	    return null;
	  } // Only fire when selection has actually changed.


	  var currentSelection = getSelection$1(activeElement$1);

	  if (!lastSelection || !shallowEqual(lastSelection, currentSelection)) {
	    lastSelection = currentSelection;
	    var syntheticEvent = SyntheticEvent.getPooled(eventTypes$3.select, activeElementInst$1, nativeEvent, nativeEventTarget);
	    syntheticEvent.type = 'select';
	    syntheticEvent.target = activeElement$1;
	    accumulateTwoPhaseDispatches(syntheticEvent);
	    return syntheticEvent;
	  }

	  return null;
	}
	/**
	 * This plugin creates an `onSelect` event that normalizes select events
	 * across form elements.