For="let source of state.operations"
            [attr.data-selected]="state.isSelected(source)"
            (click)="state.select(source)">
        <div class="source">
            <span class="marker" [ngStyle]="{'background': state.getSourceColor(source)}"></span>
            <span class="major">{{state.desc(source).major}}</span>
            <span class="minor">{{state.desc(source).minor}}</span>
        </div>
    </button>
</mat-menu>