为聚合物纸张列表框启用分页或滚动条

Question

下面的代码将显示数据库中的用户列表，我想为纸张列表框启用分页/滚动条。任何帮助，将不胜感激

<paper-listbox class="dropdown-content" attr-for-selected="value" selected="{{getSelectedItemID}}" on-iron-select="_itemSelected"> 
     <template is="dom-repeat" items="[[getActiveCompanies]]" flex filter="{{Filter(filterValue)}}"> 
      <iron-item value="[[item.ID]]" class="primary">{{item.CompanyCode}} - {{item.CompanyName}}</iron-item> 
     </template> 
    </paper-listbox> 

Answer 1

首先你要导入此：铁滚动目标behavior.html

你可以试试这个后：

<div id="scrollable-element" style="display:block;height:300px;overflow-y: auto;"> 
<x-element scroll-target="scrollable-element"> 

<paper-listbox class="dropdown-content" attr-for-selected="value" selected="{{getSelectedItemID}}" on-iron-select="_itemSelected"> 
    <template is="dom-repeat" items="[[getActiveCompanies]]" flex filter="{{Filter(filterValue)}}"> 
     <iron-item value="[[item.ID]]" class="primary">{{item.CompanyCode}} - {{item.CompanyName}}</iron-item> 
    </template> 
    </paper-listbox> 

</x-element> 
</div> 

好运！