fixing Picklist scroll issue

Author: ivansfdc

components/SLDSPicklistBase/list.jsx

@@ -10,6 +10,7 @@ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 import React, { Component } from 'react';
 import {Icon} from "../SLDSIcons";
 import ListItem from "./list-item";
+import {EventUtil} from '../utils'
 
 module.exports = React.createClass({
 
@@ -147,6 +148,10 @@ module.exports = React.createClass({
     });
   },
 
+  handleMouseDown (event) {
+    EventUtil.trapImmediate(event);
+  },
+
   render () {
     return (
       <div
@@ -155,6 +160,7 @@ module.exports = React.createClass({
         style={{
           maxHeight:260
         }}
+        onMouseDown={this.handleMouseDown}
         >
         <ul
           ref="scroll"

components/utils/EventUtil.js

@@ -30,9 +30,15 @@ const EventUtil = {
   },
 
   trapImmediate(event){
+
+    if(event.stopImmediatePropagation){
+      event.stopImmediatePropagation();
+    }
+
     if(event.nativeEvent && event.nativeEvent.stopImmediatePropagation){
       event.nativeEvent.stopImmediatePropagation();
     }
+
     EventUtil.trap(event);
   }