ionic collapsible list

HTML

<link rel="stylesheet" href="//code.ionicframework.com/1.0.0-beta.12/css/ionic.css">
<script src="//code.ionicframework.com/1.0.0-beta.12/js/ionic.bundle.js"></script>
<div ng-app="ionicApp" ng-controller="MyCtrl">
    
    <ion-header-bar class="bar-positive">
      <h1 class="title">Ionic collapsible list</h1>
    </ion-header-bar>

    <ion-content>

      <ion-list>
        <div ng-repeat="group in groups">
          <ion-item class="item-stable"
                    ng-click="toggleGroup(group)"
                    ng-class="{active: isGroupShown(group)}">
              <i class="icon" ng-class="isGroupShown(group) ? 'ion-minus' : 'ion-plus'"></i>
            <p ng-repeat="name in group.name">
            &nbsp;
            {{group.name}}
            </p>
          </ion-item>
          <ion-item class="item-accordion"
                    ng-repeat="item in group.items"
                    ng-show="isGroupShown(group)">
            {{item}}
          </ion-item>
        </div>
      </ion-list>

    </ion-content>
      
  </div>

CSS

/* 
.list .item.item-accordion {
  line-height: 38px;
  padding-top: 0;
  padding-bottom: 0;
  transition: 0.09s all linear;
}
.list .item.item-accordion.ng-hide {
  line-height: 0px;
}
.list .item.item-accordion.ng-hide-add,
.list .item.item-accordion.ng-hide-remove {
  display: block !important;
} */

JavaScript

angular.module('ionicApp', ['ionic'])

.controller('MyCtrl', function($scope) {
  $scope.groups = [];
  for (var i=0; i<2; i++) {
    $scope.groups[i] = {
      name: ["Proteção Familia", "Sênior"],
      items: [],
      show: false
    };
    for (var j=0; j<2; j++) {
      $scope.groups[i].items.push(i + '-' + j);
    }
  }
  
  /*
   * if given group is the selected group, deselect it
   * else, select the given group
   */
  $scope.toggleGroup = function(group) {
    group.show = !group.show;
  };
  $scope.isGroupShown = function(group) {
    return group.show;
  };
  
});