import org.netbeans.api.visual.layout.Layout; //导入依赖的package包/类
public TLScene(TLDatabase db) {
        LayoutFactory.SerialAlignment ALIGNMENT = LayoutFactory.SerialAlignment.LEFT_TOP;
        Layout flowLayout = LayoutFactory.createVerticalFlowLayout(ALIGNMENT, 10);

        getActions().addAction(ActionFactory.createPanAction());

        // add main layer
        this.mainLayer = new LayerWidget(this);
        this.mainLayer.setLayout(flowLayout);
        this.addChild(mainLayer);

        // add overlay layer
        this.overlayLayer = new LayerWidget(this);
        this.addChild(overlayLayer);

        // add CurrentTimeWidget to over
//        currentTimeWidget = new CurrentTimeWidget(this, db);
//        overlayLayer.addChild(currentTimeWidget);

        // add widget showing ticks above
        ticsWidgety = new TimeTicsWidget(this);
        this.mainLayer.addChild(ticsWidgety);
    }
 

import org.netbeans.api.visual.layout.Layout; //导入依赖的package包/类
public DevolveWidgetLayout (Widget widget, Layout devolveLayout, boolean animate) {
    super (widget.getScene ());
    assert devolveLayout != null;
    this.widget = widget;
    this.devolveLayout = devolveLayout;
    this.animate = animate;
}
 

import org.netbeans.api.visual.layout.Layout; //导入依赖的package包/类
/**
 * Sets the layout of the widget.
 * @param layout the layout
 */
public final void setLayout (Layout layout) {
    this.layout = layout;
    revalidate ();
}
 

import org.netbeans.api.visual.layout.Layout; //导入依赖的package包/类
/**
 * Returns the layout of the widget.
 * @return the layout
 */
public final Layout getLayout () {
    return layout;
}
 

import org.netbeans.api.visual.layout.Layout; //导入依赖的package包/类
/**
 * Returns the layout of the widget.
 *
 * @return the layout
 */
Layout getLayout();
 

import org.netbeans.api.visual.layout.Layout; //导入依赖的package包/类
/**
 * Sets the layout of the widget.
 *
 * @param layout the layout
 */
void setLayout(Layout layout);