int rowIndex = 1;
builder.addLabel("Group by :", cc.xy(1, rowIndex));
ButtonGroup group = new ButtonGroup();
JRadioButton groupByComponent = new JRadioButton("component(s)", false);
groupByComponent.addItemListener(new FactorySelection(mTree, ComponentTreeFactory.getInstance()));
group.add(groupByComponent);
builder.add(groupByComponent, cc.xy(3, rowIndex));
JRadioButton groupByEvent = new JRadioButton("event(s)", false);
groupByEvent.addItemListener(new FactorySelection(mTree, EventTreeFactory.getInstance()));
group.add(groupByEvent);
builder.add(groupByEvent, cc.xy(5, rowIndex));
groupByComponent.setSelected(true);
rowIndex+=2;
builder.add(new JScrollPane(mTree), cc.xyw(1, rowIndex, 5));