downloadpanel.java

java for search when you can not find suitabe codes

package edu.jlu.fuliang;

import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.util.ArrayList;
import java.util.List;

import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.JTextField;

public class DownloadPanel extends JPanel{
  private JTextField savePathTextField;
  private JButton downloadButton,browseButton;
  private JFileChooser chooser;
  private List<DownloadInfo> downloadInfos = new ArrayList<DownloadInfo>();//所有下载的歌曲列表信息
  private List<DownloadInfo> thisDownloadInfos;//本次下载的歌曲列表信息
  private Download download;
  
  public DownloadPanel(){
	  download = new Download(".");
	  setLayout(new GridLayout(2,1));
	  JPanel savaPanel = new JPanel();
	  savaPanel.add(new JLabel("保存位置:"));
	  savePathTextField = new JTextField(30);
	  savaPanel.add(savePathTextField);
	  browseButton = new JButton("浏览");
	  savaPanel.add(browseButton);
	  add(savaPanel);
	  
	  JPanel progressPanel = new JPanel();
	  downloadButton = new JButton("下载");
	  progressPanel.add(downloadButton);
	  add(progressPanel);
	  chooser = new JFileChooser();
	  
	  browseButton.addActionListener(new ActionListener(){

		public void actionPerformed(ActionEvent e) {
			JFileChooser chooser = new JFileChooser();
			chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
			chooser.setCurrentDirectory(new File("."));
			int result = chooser.showOpenDialog(DownloadPanel.this);
			if(result == JFileChooser.APPROVE_OPTION){
			    String path = chooser.getSelectedFile().getPath();
			    savePathTextField.setText(path);
                download.setSavePath(path);
			}
		}
		  
	  });
	  
	  downloadButton.addActionListener(new ActionListener(){
		public void actionPerformed(ActionEvent e) {
			MusicListTableModel musicListTableModel = MusicListTableModel.getInstance();
			thisDownloadInfos = new ArrayList<DownloadInfo>();
			for(int i = 0; i < musicListTableModel.getRowCount(); i++){
			      if((Boolean)musicListTableModel.getValueAt(i, 4) == true){
			    	  DownloadInfo downloadInfo = new DownloadInfo();
			    	  downloadInfo.setSongName((String)musicListTableModel.getValueAt(i, 0));
			    	  downloadInfo.setAblum((String)musicListTableModel.getValueAt(i, 2));
			    	  downloadInfo.setLink((String)musicListTableModel.getValueAt(i, 1));
			    	  downloadInfo.setSonger((String)musicListTableModel.getValueAt(i, 3));
			    	  downloadInfo.setTotalSize(0);
			    	  downloadInfo.setDownloaded(0);
			    	
			    	  downloadInfos.add(downloadInfo);
			    	  thisDownloadInfos.add(downloadInfo);
			      }
			}
			
			Context.addContext("downloadInfos", downloadInfos);
			Context.addContext("thisDownloadInfos", thisDownloadInfos);
			
			 download.doDownload();
		}
	  });
	  
  }
  
}