@Input() fieldPreferences: IFieldPreference[];

<mat-selection-list #list>
  <mat-list-option  *ngFor="let preference of fieldPreferences"
          [selected]="preference.selected"
          (click)="showPreferenceChanged(list)"
          [value]="preference.field">
          {{preference.field}}
  </mat-list-option>
</mat-selection-list>

<mat-icon tooltip [content]="template">settings</mat-icon>

<ng-template #template>
 <field-preferences
    [fieldPreferences]="fieldPreferences"
    (selectedFields)="showPreferenceChanged($event)">
 </field-preferences>
</ng-template>

<mat-selection-list #list>
   <mat-list-option  ngFor let-preference [ngForOf]="fieldPreferences"
      [selected]="preference.selected"
      (click)="showPreferenceChanged(list)"
      [value]="preference.field">
      {{preference.field}}
    </mat-list-option>
  </mat-selection-list>