Focus on select option

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.3.8/angular.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.3.8/angular-animate.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.3.8/angular-aria.js"></script>
<script src="https://rawgit.com/angular/bower-material/master/angular-material.js"></script>
<link rel="stylesheet" href="https://rawgit.com/angular/bower-material/master/angular-material.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/hammer.js/2.0.4/hammer.js"></script>
<div ng-controller="csrClrt">


<div  ng:repeat="item in items track by $index">

  <md-list one class="md-accordion">
            <md-input-container>
                   <label>Face Style:</label>
                  <md-select ng-model="a.style">
                   <md-option ng-value="user.value" ng:repeat="user in styles">{{user.value}}</md-option>
                  </md-select>
          </md-input-container>  
   </md-list>
</div>
<div>
<input type="button" value="get selected value" ng-click="getvalue()"/>
</div>
                   
                   
                 
                    
                    
                    <p>
                    if i ttry out of parent ng repeat
                    </p>
                     <md-input-container>
                   <label>Face Style:</label>
                  <md-select ng-model="a.style">
                   <md-option ng-value="user.name" ng:repeat="user in styles">{{user.name}}</md-option>
                  </md-select>
          </md-input-container>
                              <div>
                              
<input type="button" value="get selected value" ng-click="getvalue()"/>
                              </div>
                              
                                 </div>

JavaScript

angular.module('MyApp', ['ngMaterial'])
.controller('csrClrt', function ($scope) {
     $scope.items=["0"];
     $scope.a = {style:""}
     stylesdata=[{name:"a"},{name:"b", value:"c"},{name:"b",value:"a"},{name:"c"}];
     var style=[];
     for(var i=0;i<stylesdata.length;i++)
     {
       style.push({
       	name:stylesdata[i].name
       })
     }
     $scope.styles=style;
     $scope.getvalue=function()
     {
     	 
       alert($scope.a.style);
     }
     
     

})