adsk-forge-LevelSectionPanel-step2

this.container.classList.add( 'adn-docking-panel' );
this.container.classList.add( 'adn-lvl-section-panel' );

if (!options.heightAdjustment)
    options.heightAdjustment = 70;

if (!options.marginTop)
    options.marginTop = 0;

this.createScrollContainer( options );
this.options = options;
this.viewer = viewer;
this.uiCreated = false;

this.addVisibilityListener(( show ) => {
    if( !show ) return;

    if( !this.uiCreated )
        this.createUI();
});

this.onButtonClicked = this.onButtonClicked.bind( this );