inputpane.java

JAVA图形界面算平均值 方差 简单的JTREE是应用

package gui;

import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import model.Datenmodell;


public class InputPane extends JPanel{
	/**
	 *input the values and add it into list 
	 */
	private static final long serialVersionUID = 1073196683753167491L;
	
	private JTextField textField=new JTextField();
	private JScrollPane scrollPane;
	private JList list;
	private JButton add=new JButton("  Add  ");
	private JButton remove=new JButton("Remove");
	private JToolBar toolBar=new JToolBar();
	private Datenmodell model;
	
	public InputPane(Datenmodell model){
		super();
		this.model=model;
		setName("input Data");
//		setSize(400,300);
		setBorder(BorderFactory.createEtchedBorder()); 
		init();
	}
	private void init(){
		list=new JList(new DatenListModel(model));
		list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
		
		GridBagConstraints gridBagConstraints2 = new GridBagConstraints();
		gridBagConstraints2.insets = new Insets(15, 155, 20, 55);
		gridBagConstraints2.gridy = 2;
		gridBagConstraints2.gridx = 0;
		gridBagConstraints2.anchor = GridBagConstraints.SOUTH;
		
		GridBagConstraints gridBagConstraints1 = new GridBagConstraints();
		gridBagConstraints1.fill = GridBagConstraints.BOTH;
		gridBagConstraints1.gridwidth = 2;
		gridBagConstraints1.gridx = 0;
		gridBagConstraints1.gridy = 1;
		gridBagConstraints1.weightx = 1.0;
		gridBagConstraints1.weighty = 1.0;
		GridBagConstraints gridBagConstraints = new GridBagConstraints();
		gridBagConstraints.fill = GridBagConstraints.BOTH;
		gridBagConstraints.gridwidth = 2;
		gridBagConstraints.gridx = 0;
		gridBagConstraints.gridy = 0;
		gridBagConstraints.weightx = 1.0;
		
		setLayout(new GridBagLayout());
		
		scrollPane=new JScrollPane(list);
		
		toolBar.add(add);
		toolBar.add(remove);
		
		add(textField, gridBagConstraints);
		add(scrollPane, gridBagConstraints1);
		add(toolBar, gridBagConstraints2);
		
		textField.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				addValue_actionPerformed(e);
			}
		});
		
		add.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				addButton_actionPerformed(e);
			}
		});
		
		remove.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				removeButton_actionPerformed(e);
			}
		});
	}
	
	private void addButton_actionPerformed(ActionEvent e){
		int index = list.getSelectedIndex();
		if (index >= 0 && index < model.getSize()) {
			model.addValue(model.getValue(index));
		}
	}
	
	private void removeButton_actionPerformed(ActionEvent e){
		int index = list.getSelectedIndex();
		if (index >= 0 && index < model.getSize()) {
			model.deletValue(index);
		}
	}
	
	private void addValue_actionPerformed(ActionEvent e){
		try {
			double v=Double.parseDouble(textField.getText());
			if(v>=100)
				JOptionPane.showMessageDialog(this, "new value must smaller than 100");
			else
				model.addValue(v);
		} catch (NumberFormatException excpt) {
			JOptionPane.showMessageDialog(this, "Wrong format for new value");
		}finally{
			textField.setText(""); 
		}
		
	}
}