react/lib/ReactNativeBridgeEventPlugin.js

/**
 * Copyright (c) 2015-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactNativeBridgeEventPlugin
 * 
 */
'use strict';

var _assign = require('object-assign');

var _extends = _assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

var EventPropagators = require('./EventPropagators');
var SyntheticEvent = require('./SyntheticEvent');
var UIManager = require('react-native/lib/UIManager');

var warning = require('fbjs/lib/warning');

var customBubblingEventTypes = UIManager.customBubblingEventTypes;
var customDirectEventTypes = UIManager.customDirectEventTypes;

var allTypesByEventName = {};

for (var bubblingTypeName in customBubblingEventTypes) {
  allTypesByEventName[bubblingTypeName] = customBubblingEventTypes[bubblingTypeName];
}

for (var directTypeName in customDirectEventTypes) {
  process.env.NODE_ENV !== 'production' ? warning(!customBubblingEventTypes[directTypeName], 'Event cannot be both direct and bubbling: %s', directTypeName) : void 0;
  allTypesByEventName[directTypeName] = customDirectEventTypes[directTypeName];
}

var ReactNativeBridgeEventPlugin = {

  eventTypes: _extends({}, customBubblingEventTypes, customDirectEventTypes),

  /**
   * @see {EventPluginHub.extractEvents}
   */
  extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) {
    var bubbleDispatchConfig = customBubblingEventTypes[topLevelType];
    var directDispatchConfig = customDirectEventTypes[topLevelType];
    var event = SyntheticEvent.getPooled(bubbleDispatchConfig || directDispatchConfig, targetInst, nativeEvent, nativeEventTarget);
    if (bubbleDispatchConfig) {
      EventPropagators.accumulateTwoPhaseDispatches(event);
    } else if (directDispatchConfig) {
      EventPropagators.accumulateDirectDispatches(event);
    } else {
      return null;
    }
    return event;
  }
};

module.exports = ReactNativeBridgeEventPlugin;