<div class="file-tree-column">
  <div class="file-tree-column-toggle" [class.active]="showFileTree"
       (click)="toggleTree()">
    <div class="file-structure-button">File structure</div>
  </div>
  <app-file-tree *ngIf="showFileTree" [files]="files" [active]="currentFile"
                 (onSelectFile)="onSelectFile($event)">
  </app-file-tree>
</div>

<div class="file-tree-column">
  <div class="file-tree-column-toggle" [class.active]="showFileTree"
       (click)="toggleTree()">
    <div class="file-structure-button"><img src="/assets/images/folder.png" />File structure</div>
  </div>
  <app-file-tree *ngIf="showFileTree" [files]="files" [active]="currentFile"
                 (onSelectFile)="onSelectFile($event)">
  </app-file-tree>
</div>

Add an icon to the file structure
Add an icon to the file structure
