mypicturedialog.java

用applet生成网页。直接在applet上拖动鼠标

package mydesktop;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.*;
import javax.swing.filechooser.*;
import java.util.*;
import java.net.*;
public class MyPictureDialog extends JDialog{
	JPanel panel =new JPanel();
	JButton butUpload = new JButton("上传");
	JButton butOk = new JButton("确定");
	JButton butCanel = new JButton("取消");
	JTextField urlText = new JTextField();
	JPanel picturePanel = new JPanel();
	JLabel pictureLabel = new JLabel();
	JPanel uploadPanel = new JPanel();
	JPanel southPanel = new JPanel();
	private String [] FILE_OPEN_NAME={"JPG(*.jpg)","GIF(*.gif)"};
	public MyPictureDialog(JFrame frame,String title ,boolean modal){
		super(frame,title,modal);
		try{
			jbInit();
			pack();
		}
		catch(Exception e){
			
		}
	}
	public void jbInit()throws Exception{
		uploadPanel.add(urlText);
		uploadPanel.add(butUpload);
		panel.setLayout(new BorderLayout());
		panel.add(uploadPanel,BorderLayout.NORTH);
		panel.add(picturePanel,BorderLayout.CENTER);
		panel.add(southPanel,BorderLayout.SOUTH);
		picturePanel.add(pictureLabel);
		southPanel.add(butOk,null);
		southPanel.add(butCanel,null);
		getContentPane().add(panel);
		butOk.addActionListener(new PictureOKActionListener(this));
		butCanel.addActionListener(new PictureCanelActionListener(this));
		butUpload.addActionListener(new UploadActionListener(this));
	}
	public void actionListener(){
		this.dispose();
	}
	public void setPicture(String str){
		URL url = getClass().getResource(str);
		Image image = Toolkit.getDefaultToolkit().getImage(url);
		image.getScaledInstance(20,20, Image.SCALE_SMOOTH);
		ImageIcon ii = new ImageIcon(image);
		pictureLabel.setIcon(ii);
	    this.urlText.setText(str);
	  }
	public void uploadListener(){
		JFileChooser chooser = new JFileChooser();
	//	FileFilter filter = new FileNameExtensionFilter ("JPG & GIF Images", "jpg", "gif");
	//	fd.setFilenameFilter(new );
		int returnVal = chooser.showOpenDialog(this);
	    if(returnVal == JFileChooser.APPROVE_OPTION) {
	            urlText.setText("images/"+chooser.getSelectedFile().getName());
	    }
	    else return;
	    try{
		    URL url = getClass().getResource(urlText.getText());
		    Image image = Toolkit.getDefaultToolkit().getImage(url);
		    ImageIcon ii = new ImageIcon(image);
		    pictureLabel.setIcon(ii);
	    }
	    catch(Exception e){
	    	
	    }
	}

}
class PictureOKActionListener implements java.awt.event.ActionListener{
	MyPictureDialog d;
	PictureOKActionListener(MyPictureDialog d){
		this.d = d;
	}
	public void actionPerformed(ActionEvent e){
		d.actionListener();
	}
}
class PictureCanelActionListener implements ActionListener{
	MyPictureDialog d;
	PictureCanelActionListener(MyPictureDialog d){
		this.d = d;
	}
	public void actionPerformed(ActionEvent e) {
	    d.actionListener();
	  }
}
class UploadActionListener implements ActionListener{
	MyPictureDialog d;
	UploadActionListener(MyPictureDialog d){
		this.d =d ;
	}
	public void actionPerformed(ActionEvent ae){
		d.uploadListener();
	}
}