Bug 41491 Add constructors from fields issues
200300813 a. add visibility buttons like 'Add constructor from super class'
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/GenerateNewConstructorUsingFieldsAction.java
private CompilationUnitEditor fEditor;
	private static final String fDialogTitle= ActionMessages.getString("GenerateConstructorUsingFieldsAction.error.title"); 
	private static final int UP_INDEX= 0;
	private static final int DOWN_INDEX= 1;
	/**
	 * Creates a new <code>GenerateConstructorUsingFieldsAction</code>. The action requires
	 * that the selection provided by the site's selection provider is of type <code>
	 * org.eclipse.jface.viewers.IStructuredSelection</code>.
	 * 
	 * @param site the site providing context information for this action
	 */
	public GenerateNewConstructorUsingFieldsAction(IWorkbenchSite site) {
		super(site);
		setText(ActionMessages.getString("GenerateConstructorUsingFieldsAction.label")); 
		setDescription(ActionMessages.getString("GenerateConstructorUsingFieldsAction.description")); 
		setToolTipText(ActionMessages.getString("GenerateConstructorUsingFieldsAction.tooltip")); 
		WorkbenchHelp.setHelp(this, IJavaHelpContextIds.CREATE_NEW_CONSTRUCTOR_ACTION);
	}
	/**
	 * Note: This constructor is for internal use only. Clients should not call this constructor.
	 */