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  ~ Licensed to the Apache Software Foundation (ASF) under one
  ~ or more contributor license agreements.  See the NOTICE file
  ~ distributed with this work for additional information
  ~ regarding copyright ownership.  The ASF licenses this file
  ~ to you under the Apache License, Version 2.0 (the
  ~ "License"); you may not use this file except in compliance
  ~ with the License.  You may obtain a copy of the License at
  ~
  ~   http://www.apache.org/licenses/LICENSE-2.0
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  ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  ~ KIND, either express or implied.  See the License for the
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<div class="dropdown-list" >
  <button class="dropdown-toggle" type="button" #list (click)="emitEvent()" (click)="actions.toggle($event, list)">
    <span class="title"><span [innerHTML]="label || 'None'"></span></span>
    <span class="caret-btn"><i class="material-icons">keyboard_arrow_down</i></span>
  </button>

  <bubble-up #actions position="bottom" class="mt-5">
    <ul class="list-menu" id="scrolling">
      <ng-template [ngIf]="listStructure === 'array'">
        <li *ngIf="empty" (click)="selectOptions($event, null, 0)">
          <a role="menuitem">None</a>
        </li>
        <ng-template let-item ngFor [ngForOf]="items" let-index="index">
          <li role="presentation" (click)="selectOptions($event, item, index)">
            <a role="menuitem"><span [innerHTML]="item[byField]"></span></a>
          </li>
        </ng-template>

        <li *ngIf="items.length == 0">
          <a role="menuitem"><i class="material-icons">visibility_off</i>No items</a>
        </li>
      </ng-template>
      <ng-template [ngIf]="listStructure === 'json'">
        <li *ngFor="let item of (items | keys); let index = index">
          <span class="caption">{{item.key | underscoreless}}</span>
          <a *ngFor="let list_item of item.value" (click)="selectOptions($event, list_item, index)">
            <strong>{{list_item.size}}</strong> {{list_item[byField]}}
          </a>
        </li>
      </ng-template>

      <ng-template [ngIf]="listStructure === 'list'">
        <ng-template let-item ngFor [ngForOf]="items" let-index="index">
          <li role="presentation">
            <a role="menuitem" (click)="selectOptions($event, item, index)">
              {{ map[item] }}
            </a>
          </li>
        </ng-template>

        <li *ngIf="items.length == 0">
          <a role="menuitem"><i class="material-icons">visibility_off</i>No items</a>
        </li>
      </ng-template>
    </ul>
  </bubble-up>
</div>