newdirectoryaction.java

该系统是一个基于p2p的即时聊天系统

/*
 * @(#) NewDirectoryAction.java
 * Copyright 2004 HWStudio. All rights reserved.
 */
package hws.item.smart.action.share.upload;
//导入核心Java类库
import java.awt.event.ActionEvent;
import javax.swing.JOptionPane;
//导入自定义Java类库
import hws.item.smart.Smart;
import hws.item.smart.misc.PopToolkit;
import hws.item.smart.misc.StringShop;
import hws.item.smart.panel.function.share.UploadPanel;
import hws.item.smart.action.BaseAction;
/**
 * 在选中的目录下创建子目录
 *
 * @version 0.1 2005-08-18
 * @author Hwerz
 */
public class NewDirectoryAction extends BaseAction {
    /*------------------------------------------------------------------------*
     *                                属性定义                                *
     *------------------------------------------------------------------------*/
    /**
     * 该类自身的一个静态引用
     */
    private static NewDirectoryAction action;
    /*------------------------------------------------------------------------*
     *                                构造函数                                *
     *------------------------------------------------------------------------*/
    /**
     * 构造函数为私有，这样在整个运行过程中该类就只能有一个实例
     */
    private NewDirectoryAction() {
        super("新建目录");
        setHintInfo("在选中的目录下创建子目录");
    }
    /*------------------------------------------------------------------------*
     *                                公共方法                                *
     *------------------------------------------------------------------------*/
    /**
     * 对该类提供的一个全局访问点，用来实例化该对象
     *
     * @return 该类唯一的一个实例
     */
    public static NewDirectoryAction getInstance() {
        if (action == null) {
            action = new NewDirectoryAction();
        }
        return action;
    }
    /*------------------------------------------------------------------------*
     *                                覆盖方法                                *
     *------------------------------------------------------------------------*/
    /**
     * 覆盖超类Action的方法
     *
     * @param event ActionEvent对象
     */
    public void actionPerformed(ActionEvent event) {
        boolean flag = true;
        do {
            String name = JOptionPane.showInputDialog(Smart.getInstance(),
                "请输入合法的目录名：", "新建目录", JOptionPane.PLAIN_MESSAGE);
            if (name != null) {
                name = name.trim();
                if (PopToolkit.checkFileName(name)) {
                    UploadPanel.getInstance().newDirectory(name);
                    flag = false;
                } else {
                    int option = JOptionPane.showConfirmDialog(
                        Smart.getInstance(), "您输入的目录名不合法，要重新输入吗？",
                        StringShop.HINT_TITLE, JOptionPane.YES_NO_OPTION,
                        JOptionPane.QUESTION_MESSAGE);
                    if (option == JOptionPane.NO_OPTION) {
                        flag = false;
                    }
                }
            } else {
                flag = false;
            }
        } while (flag);
    }
}