package com.hz.weep;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Panel;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.dnd.DnDConstants;
import java.awt.dnd.DropTarget;
import java.awt.dnd.DropTargetAdapter;
import java.awt.dnd.DropTargetDropEvent;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.File;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JTextField;

/**
 * 一个简单的ui,用来进行文件合并 可以把一个压缩包和图片合成一个文件 拓展名打开方式为图片拓展名则打开为图片 拓展名为压缩文件拓展名则打开为压缩文件.
 * 
 * @author weep
 * 
 */
public class MyMergeFileMachine extends DropTargetAdapter {
	public JFrame jframe;
	public JList jlist;
	public DefaultListModel dlm;
	public JTextField text;

	/**
	 * 创建程序主界面,基本的布局和按钮监听.
	 */
	public MyMergeFileMachine() {
		jframe = new JFrame("文件合并工具-百度[世态炎凉一依然]吧");
		dlm = new DefaultListModel();
		jlist = new JList(dlm);
		jlist.setDropTarget(new DropTarget(jlist,
				DnDConstants.ACTION_REFERENCE, this, true));
		jframe.add(jlist);

		Panel panel = new Panel();
		panel.setBounds(0, 0, 200, 30);
		panel.setBackground(Color.white);
		text = new JTextField();
		text.setBounds(0, 200, 200, 20);
		
		text.setText("d:\\默认合成文件.jpg");
		JButton submit = new JButton("合并");
		JButton upMove = new JButton("上移");
		JButton delete = new JButton("删除");
		JButton close = new JButton("关闭");
		
		close.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				System.exit(0);
			}
		});
		delete.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				Integer index = jlist.getAnchorSelectionIndex();
				if (index != null && index >= 0
						&& jlist.getModel().getSize() > 1) {
					dlm.remove(index);
				} else if (index == 0 && jlist.getModel().getSize() == 1) {
					dlm.removeAllElements();
				}
			}
		});
		upMove.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				Integer index = jlist.getAnchorSelectionIndex();
				if (index > 0) {
					Object temp1 = dlm.get(index - 1);
					dlm.remove(index - 1);
					dlm.add(index, temp1);
				}
			}
		});
		
		submit.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				List<String> list = new ArrayList<String>();
				for (int i = 0; i < dlm.size(); i++) {
					list.add(dlm.getElementAt(i).toString());
				}
				try {
					if (list.size() != 0) {
						addFile(list, text.getText());
					} else {
						JOptionPane.showMessageDialog(jframe, "请添加文件");
					}
				} catch (Exception e1) {
					e1.printStackTrace();
					System.err.println("擦 了 异常了！");
				}
			}
		});

		panel.add(submit);
		panel.add(upMove);
		panel.add(delete);
		panel.add(close);

		jframe.add(text, BorderLayout.BEFORE_FIRST_LINE);
		jframe.add(panel, "South");
		jframe.setSize(350, 300);
		jframe.setLocationRelativeTo(null);
		jframe.setAlwaysOnTop(true);
		jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		jframe.setVisible(true);

	}
	
	/**
	 * 继承DropTargetAdapter抽象类，实现拖拽功能.
	 */
	@SuppressWarnings("unchecked")
	public void drop(DropTargetDropEvent dtde) {
		dtde.acceptDrop(DnDConstants.ACTION_REFERENCE);
		Transferable tf = dtde.getTransferable();
		try {
			List<File> list = (List<File>) tf
					.getTransferData(DataFlavor.javaFileListFlavor);
			for (File f : list) {
				dlm.addElement(f);
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 像列表中添加新row.
	 * @param file
	 * @param target
	 * @throws Exception
	 */
	public void addFile(List<String> file, String target) throws Exception {
		String message = "";
		String files = "";
		for (String s : file) {
			files += " " + s + " +";
		}
		files = files.substring(0, files.length() - 2);
		System.out.println(files);
		// 核心代码,利用windows的copy命令进行文件合并
		Process p = Runtime.getRuntime().exec(
				"cmd /c copy /b " + files + " " + target);
		BufferedReader pw = new BufferedReader(new InputStreamReader(
				p.getInputStream()));
		String str = "";
		int i = 0;
		while ((str = pw.readLine()) != null) {
			i++;
			if (i > 1) {
				System.out.println(str.substring(12));
			} else {
				System.out.println(str);
			}

		}

		JOptionPane.showMessageDialog(jframe, "位置:" + target);
	}

	/**
	 * 运行主程序
	 * @param args
	 */
	public static void main(String[] args) {
		new MyMergeFileMachine();
	}
}