react-native/Libraries/ReactIOS/IOSNativeBridgeEventPlugin.js

73 lines
2.1 KiB
JavaScript

/**
* Copyright 2004-present Facebook. All Rights Reserved.
*
* @providesModule IOSNativeBridgeEventPlugin
*/
"use strict";
var EventPropagators = require('EventPropagators');
var NativeModulesDeprecated = require('NativeModulesDeprecated');
var SyntheticEvent = require('SyntheticEvent');
var merge = require('merge');
var warning = require('warning');
var RKUIManager = NativeModulesDeprecated.RKUIManager;
var customBubblingEventTypes = RKUIManager.customBubblingEventTypes;
var customDirectEventTypes = RKUIManager.customDirectEventTypes;
var allTypesByEventName = {};
for (var bubblingTypeName in customBubblingEventTypes) {
allTypesByEventName[bubblingTypeName] = customBubblingEventTypes[bubblingTypeName];
}
for (var directTypeName in customDirectEventTypes) {
warning(
!customBubblingEventTypes[directTypeName],
"Event cannot be both direct and bubbling: %s",
directTypeName
);
allTypesByEventName[directTypeName] = customDirectEventTypes[directTypeName];
}
var IOSNativeBridgeEventPlugin = {
eventTypes: merge(customBubblingEventTypes, customDirectEventTypes),
/**
* @param {string} topLevelType Record from `EventConstants`.
* @param {DOMEventTarget} topLevelTarget The listening component root node.
* @param {string} topLevelTargetID ID of `topLevelTarget`.
* @param {object} nativeEvent Native browser event.
* @return {*} An accumulation of synthetic events.
* @see {EventPluginHub.extractEvents}
*/
extractEvents: function(
topLevelType,
topLevelTarget,
topLevelTargetID,
nativeEvent) {
var bubbleDispatchConfig = customBubblingEventTypes[topLevelType];
var directDispatchConfig = customDirectEventTypes[topLevelType];
var event = SyntheticEvent.getPooled(
bubbleDispatchConfig || directDispatchConfig,
topLevelTargetID,
nativeEvent
);
if (bubbleDispatchConfig) {
EventPropagators.accumulateTwoPhaseDispatches(event);
} else if (directDispatchConfig) {
EventPropagators.accumulateDirectDispatches(event);
} else {
return null;
}
return event;
}
};
module.exports = IOSNativeBridgeEventPlugin;