PersistenceUnitWizardDescriptor.java 文件源码

@Override
public java.awt.Component getComponent() {
    if (panel == null) {
        if (isContainerManaged) {
            datasourcePanel = new PersistenceUnitWizardPanelDS(project, this, true);
            panel = datasourcePanel;
        } else {
            jdbcPanel= new PersistenceUnitWizardPanelJdbc(project, this, true);
            panel = jdbcPanel;
        }
        panel.addPropertyChangeListener(new PropertyChangeListener() {
            @Override
            public void propertyChange(PropertyChangeEvent evt) {
                if (evt.getPropertyName().equals(PersistenceUnitWizardPanel.IS_VALID)) {
                    Object newvalue = evt.getNewValue();
                    if ((newvalue != null) && (newvalue instanceof Boolean)) {
                        stateChanged(null);
                    }
                }
            }
        });
    }
    return panel;
}