Function extractPluginEvents

docs/external/js/react-dom.development.js:3616–3633

* Allows registered plugins an opportunity to extract events from top-level * native browser events. * * @return {*} An accumulation of synthetic events. * @internal

(topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags)

  function extractPluginEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags) {
    var events = null;

    for (var i = 0; i < plugins.length; i++) {
      // Not every plugin in the ordering may be loaded at runtime.
      var possiblePlugin = plugins[i];

      if (possiblePlugin) {
        var extractedEvents = possiblePlugin.extractEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags);

        if (extractedEvents) {
          events = accumulateInto(events, extractedEvents);
        }
      }
    }

    return events;
  }

  function runExtractedPluginEventsInBatch(topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags) {
    var events = extractPluginEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags);