renameaction.java

该系统是一个基于p2p的即时聊天系统

/*
 * @(#) RenameAction.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 java.util.List;
import java.util.zip.ZipEntry;
import javax.swing.JOptionPane;
import javax.swing.tree.DefaultMutableTreeNode;
//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.chat.ViewPanel;
import hws.item.smart.panel.function.share.UploadPanel;
import hws.item.smart.action.BaseAction;
import hws.item.smart.utility.chat.UserInfo;
/**
 * 对文件或者目录重新命名
 *
 * @version 0.1 2005-08-29
 * @author Hwerz
 */
public class RenameAction extends BaseAction {
    /*------------------------------------------------------------------------*
     *                                属性定义                                *
     *------------------------------------------------------------------------*/
    /**
     * 该类自身的一个静态引用
     */
    private static RenameAction 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 RenameAction() {
        super("重命名");
        setHintInfo("对文件或者目录重新命名");
        setEnabled(false);
    }
    /*------------------------------------------------------------------------*
     *                                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 RenameAction getInstance() {
        if (action == null) {
            action = new RenameAction();
        }
        return action;
    }
    /*------------------------------------------------------------------------*
     *                                私有方法                                *
     *------------------------------------------------------------------------*/
    /**
     * 重命名
     */
    private void rename() {
        DefaultMutableTreeNode n = UploadPanel.getInstance().getSelectedNode();
        ZipEntry entry = (ZipEntry) n.getUserObject();
        String oldName = entry.getName();
        if (entry.isDirectory() == true) {
            oldName = oldName.substring(0, oldName.length() - 1);
            int index = oldName.lastIndexOf("/");
            oldName = oldName.substring(index + 1, oldName.length());
        } else {
            int index = oldName.lastIndexOf("/");
            oldName = oldName.substring(index + 1, oldName.length());
        }
        boolean flag = true;
        do {
            String newName = (String) JOptionPane.showInputDialog(
                Smart.getInstance(), "请输入合法的文件名：", "重命名",
                JOptionPane.PLAIN_MESSAGE, null, null, oldName);
            if (newName != null) {
                newName = newName.trim();
                if (PopToolkit.checkFileName(newName)) {
                    if (newName.equals(oldName) == false) {
                        UploadPanel.getInstance().rename(newName);
                    }
                    flag = false;
                } else {
                    int option = JOptionPane.showConfirmDialog(
                        Smart.getInstance(), "您输入的文件名不合法，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);
    }
    /*------------------------------------------------------------------------*
     *                                覆盖方法                                *
     *------------------------------------------------------------------------*/
    /**
     * 覆盖超类Action的方法
     *
     * @param event ActionEvent对象
     */
    public void actionPerformed(ActionEvent event) {
        String id = ViewPanel.getInstance().getUserID();
        if (id.length() > 0) {
            UserInfo user = UserInfo.getRemoteUserInfo(id);
            List files = user.getSharesInfo().getAllShareFiles();
            String file = UploadPanel.getInstance().getSelectedFile();
            boolean shared = false;
            for (int i = 0; i < files.size(); i++) {
                String file2 = files.get(i).toString();
                if (file2.indexOf(file) != -1) {
                    shared = true;
                    break;
                }
            }
            if (shared) {
                JOptionPane.showMessageDialog(Smart.getInstance(),
                    "不能重命名共享文件及其所在的目录，除非先取消文件的共享属性！",
                    StringShop.HINT_TITLE, JOptionPane.INFORMATION_MESSAGE);
            } else {
                rename();
            }
        } else {
            JOptionPane.showMessageDialog(Smart.getInstance(),
                "您还没有登录，请先登录！", StringShop.HINT_TITLE,
                JOptionPane.INFORMATION_MESSAGE);
        }
    }
}