JScrollPane peiUI = new JScrollPane(pei.getExplorerComponent());
peiUI.setBorder(BorderFactory.createEmptyBorder());
peiUI.getViewport().setBackground(Color.white);
// layout.addWindow(peiUI, "Pattern", icon,ConstantDefinition.Position.LEF, false);
pei
.addPropertyChangeListener(
de.FeatureModellingTool.Pattern.ConstantDefinition.CURRENT_TEMPLATE,
pge.getCurrentTemplateChangeListener());
// gh pattern end