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JAVA－SWT如何在Jtable单元格中加入复选框Jcheckbox,Jbutton,JcomboBox

 
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项目用到一个需求就是在Jtable单元格中加复选框Jcheckbox或者Jbutton，在网上终于找到了解决的办法。可惜，加两个Jbutton的问题还没有解决。

先记下如何在如何在Jtable单元格中加复选框Jcheckbox和JComboBox。

第一种:自定义自己的TableModel类。

这种方法核心是需要实现getColumnClass()方法，只要覆盖tablemodel的getColumnClass返回一个boolean的class， jtable会自动画一个Jcheckbox给你。说直白一些就是你返回一个boolean类型的值，它会自动在Jtable中画一个checkBox。true选示被选中，false表示未选中。

package com;

import javax.swing.JFrame;
import javax.swing.JComboBox;
import javax.swing.JCheckBox;
import javax.swing.JTextField;
import java.awt.Container;
import javax.swing.table.AbstractTableModel;
import javax.swing.JTable;
import javax.swing.JScrollPane;
import javax.swing.DefaultCellEditor;
import javax.swing.table.TableColumn;

@SuppressWarnings("serial")
public class AbstractTableModelTest extends JFrame {

	private JTable table = null;
	private JScrollPane jsp = null;
	private JComboBox cob = null;
	private JCheckBox ckb = null;
	private JTextField txt = null;

	public AbstractTableModelTest() {
		this.setTitle("JTable的ListSelectionModeld的监听事件");
		this.setSize(400, 360);

		// 获取窗体的内容面板
		Container container = this.getContentPane();
		MyAbstractTableModel1 myModel = new MyAbstractTableModel1();

		// JTable
		table = new JTable(myModel);
		// 获得表格的表格列类
		TableColumn tc1 = table.getColumnModel().getColumn(2);
		TableColumn tc2 = table.getColumnModel().getColumn(4);
		TableColumn tc3 = table.getColumnModel().getColumn(5);

		// 实例化JCheckBox
		ckb = new JCheckBox();
		tc1.setCellEditor(new DefaultCellEditor(ckb));

		// 实例化JComboBox
		cob = new JComboBox();
		cob.addItem("HN");
		cob.addItem("HB");
		cob.addItem("BJ");
		tc2.setCellEditor(new DefaultCellEditor(cob));

		// 实例化JTextField
		txt = new JTextField("");
		txt.setSize(100, 26);
		tc3.setCellEditor(new DefaultCellEditor(txt));

		// JScrollPane
		jsp = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
				JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
		container.add(jsp);

		// 获得自定义的抽象表格模型

		this.setLocationRelativeTo(null);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setVisible(true);

	}

	public static void main(String[] args) {
		new AbstractTableModelTest();
	}
}

@SuppressWarnings("serial")
class MyAbstractTableModel1 extends AbstractTableModel {
	// 定义表头数据
	String[] head = { "ID", "NAME", "SEX(boy)", "AGE", "ADDRESS", "DEMO" };
	// 创建类型数组
	// Class[]
	// typeArray={Object.class,Object.class,Boolean.class,int.class,Object.class,Object.class};

	// 定义表的内容数据
	Object[] data1 = { "200913420125", "SUMMER", new Boolean(true),
			new Integer(20), "1", "NULL" };
	Object[] data2 = { "200913420124", "WULEI", new Boolean(true),
			new Integer(20), "2", "NULL" };
	Object[] data3 = { "200913420125", "BOOK", new Boolean(false),
			new Integer(20), "3", "NULL" };
	Object[] data4 = { "200913420125", "CUP", new Boolean(true),
			new Integer(20), "4", "NULL" };
	Object[] data5 = { "200913420125", "MOUSE", new Boolean(true),
			new Integer(20), "5", "NULL" };
	// 定义表格每一列的数据类型

	Class[] typeArray = { Object.class, Object.class, Boolean.class,
			Integer.class, JComboBox.class, Object.class };

	Object[][] data = { data1, data2, data3, data4, data5 };

	// 获得表格的列数
	public int getColumnCount() {
		return head.length;
	}

	// 获得表格的行数
	public int getRowCount() {
		return data.length;
	}

	// 获得表格的列名称
	@Override
	public String getColumnName(int column) {
		return head[column];
	}

	// 获得表格的单元格的数据
	public Object getValueAt(int rowIndex, int columnIndex) {
		return data[rowIndex][columnIndex];
	}

	// 使表格具有可编辑性
	@Override
	public boolean isCellEditable(int rowIndex, int columnIndex) {
		return true;
	}

	// 替换单元格的值
	@Override
	public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
		data[rowIndex][columnIndex] = aValue;
		fireTableCellUpdated(rowIndex, columnIndex);
	}

	// 实现了如果是boolean自动转成JCheckbox
	/*
	 * 需要自己的celleditor这么麻烦吧。jtable自动支持Jcheckbox，
	 * 只要覆盖tablemodel的getColumnClass返回一个boolean的class， jtable会自动画一个Jcheckbox给你，
	 * 你的value是true还是false直接读table里那个cell的值就可以
	 */
	public Class getColumnClass(int columnIndex) {
		return typeArray[columnIndex];// 返回每一列的数据类型
	}
}



第二种方法：自定义表格渲染和表格编辑，使其拥有相应的形状和事件。

1，自定义表格编辑

主要是实现getTableCellEditorComponent()方法，强制返回JcheckBox对象

package com;

import java.awt.Component;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;

import javax.swing.DefaultCellEditor;
import javax.swing.JCheckBox;
import javax.swing.JTable;

@SuppressWarnings("serial")
class CheckBoxEditor extends DefaultCellEditor implements ItemListener {
	private JCheckBox button;

	public CheckBoxEditor(JCheckBox checkBox) {
		super(checkBox);
	}

	public Component getTableCellEditorComponent(JTable table, Object value,
			boolean isSelected, int row, int column) {
		if (value == null)
			return null;
		button = (JCheckBox) value;
		button.addItemListener(this);
		return (Component) value;
	}

	public Object getCellEditorValue() {
		button.removeItemListener(this);
		return button;
	}

	public void itemStateChanged(ItemEvent e) {
		super.fireEditingStopped();
	}
}

2，自定义表格渲染

主要是实现getTableCellRendererComponent()方法，如果不自义表格将不会看到JcheckBox效果。

package com;

import java.awt.Component;
import javax.swing.JTable;
import javax.swing.table.TableCellRenderer;

class CheckBoxRenderer implements TableCellRenderer {

	public Component getTableCellRendererComponent(JTable table, Object value,
			boolean isSelected, boolean hasFocus, int row, int column) {
		if (value == null)
			return null;
		return (Component) value;
	}
}

3，实现代码如下： 

package com;

import java.awt.Dimension;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.event.TableModelEvent;
import javax.swing.table.DefaultTableModel;

public class Tables implements MouseListener {
	JTable table = new JTable();

	public Tables() {
		JFrame frame = new JFrame("sjh");
		frame.setLayout(null);

		table = this.gettable();
		table.addMouseListener(this);
		JScrollPane src = new JScrollPane(table);
		src.setBounds(0, 0, 400, 200);
		frame.setSize(new Dimension(400, 200));
		frame.add(src);
		frame.setVisible(true);
	}

	public JTable gettable() {
		DefaultTableModel dm = new DefaultTableModel();
		dm.setDataVector(new Object[][] {
				{ new JCheckBox("111"), new JCheckBox("111"),
						new JCheckBox("111"), new JCheckBox("111"),
						new JCheckBox("111"), new JCheckBox("111") },
				{ new JCheckBox("222"), new JCheckBox("222"),
						new JCheckBox("222"), new JCheckBox("222"),
						new JCheckBox("222"), new JCheckBox("222") },
				{ new JCheckBox("333"), new JCheckBox("333"),
						new JCheckBox("333"), new JCheckBox("333"),
						new JCheckBox("333"), new JCheckBox("333") }, },
				new Object[] { "选择", "结果物", "说明", "类型", "发包要求文档", "操作" });

		JTable table = new JTable(dm) {
			public void tableChanged(TableModelEvent e) {
				super.tableChanged(e);
				repaint();
			}
		};
		table.getColumn("选择").setCellEditor(
				new CheckBoxEditor(new JCheckBox()));
		table.getColumn("结果物").setCellEditor(
				new CheckBoxEditor(new JCheckBox()));
		table.getColumn("说明").setCellEditor(
				new CheckBoxEditor(new JCheckBox()));
		table.getColumn("类型").setCellEditor(
				new CheckBoxEditor(new JCheckBox()));

		table.getColumn("发包要求文档").setCellEditor(
				new CheckBoxEditor(new JCheckBox()));
		table.getColumn("操作").setCellEditor(
				new CheckBoxEditor(new JCheckBox()));
		// // table.getColumn("选择").setCellRenderer(new RadioButtonRenderer());
		// table.getColumn("选择").setCellRenderer(new CheckBoxRenderer());
		// table.setCellEditor(new CheckButtonEditor(new JCheckBox ()));
		table.getColumn("选择").setCellRenderer(new CheckBoxRenderer());
		table.getColumn("结果物").setCellRenderer(new CheckBoxRenderer());
		table.getColumn("说明").setCellRenderer(new CheckBoxRenderer());
		table.getColumn("类型").setCellRenderer(new CheckBoxRenderer());
		table.getColumn("发包要求文档").setCellRenderer(new CheckBoxRenderer());
		table.getColumn("操作").setCellRenderer(new CheckBoxRenderer());

		return table;
	}

	public static void main(String args[]) {
		new Tables();
	}

	public void mouseClicked(MouseEvent arg0) {
	}

	public void mouseEntered(MouseEvent arg0) {
	}

	public void mouseExited(MouseEvent arg0) {
	}

	public void mousePressed(MouseEvent arg0) {
	}

	public void mouseReleased(MouseEvent arg0) {
	}
}

最终的效果图如图.

它既有JcheckBox的事件，也有JcheckBox的形状。


同理加入Jbutton也是如

/*
 * TableButton3.java
 *
 * Created on __DATE__, __TIME__
 */

package com;

import java.util.Date;

import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;

/**
 * 
 * @author __USER__
 */
public class TableButton3 extends javax.swing.JFrame {

	public TableButton3() {
		String[] columnNames = { "Date ", "String ", "Integer ", "Number ", " " };
		Object[][] data = {
				{ new Date(), "A ", new Integer(1), new Double(5.1), "Delete0 " },
				{ new Date(), "B ", new Integer(2), new Double(6.2), "Delete1 " },
				{ new Date(), "C ", new Integer(3), new Double(7.3), "Delete2 " },
				{ new Date(), "D ", new Integer(4), new Double(8.4), "Delete3 " } };

		DefaultTableModel model = new DefaultTableModel(data, columnNames);
		JTable table = new JTable(model);

		JScrollPane scrollPane = new JScrollPane(table);
		getContentPane().add( scrollPane );
		ButtonColumn buttonsColumn = new ButtonColumn(table, 4);
	}

	public static void main(String[] args) {
		TableButton3 frame = new TableButton3();
		frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
		frame.pack();
		frame.setVisible(true);
		
	}

	
}
package com;

import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.AbstractCellEditor;
import javax.swing.JButton;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumnModel;

public class ButtonColumn extends AbstractCellEditor implements
		TableCellRenderer, TableCellEditor, ActionListener {
	JTable table;
	JButton renderButton;
	JButton editButton;
	String text;

	public ButtonColumn(JTable table, int column) {
		super();
		this.table = table;
		renderButton = new JButton();
		editButton = new JButton();
		editButton.setFocusPainted(false);
		editButton.addActionListener(this);

		TableColumnModel columnModel = table.getColumnModel();
		columnModel.getColumn(column).setCellRenderer(this);
		columnModel.getColumn(column).setCellEditor(this);
	}

	public Component getTableCellRendererComponent(JTable table, Object value,
			boolean isSelected, boolean hasFocus, int row, int column) {
		if (hasFocus) {
			renderButton.setForeground(table.getForeground());
			renderButton.setBackground(UIManager.getColor("Button.background"));
		} else if (isSelected) {
			renderButton.setForeground(table.getSelectionForeground());
			renderButton.setBackground(table.getSelectionBackground());
		} else {
			renderButton.setForeground(table.getForeground());
			renderButton.setBackground(UIManager.getColor("Button.background"));
		}

		renderButton.setText((value == null) ? " " : value.toString());
		return renderButton;
	}

	public Component getTableCellEditorComponent(JTable table, Object value,
			boolean isSelected, int row, int column) {
		text = (value == null) ? " " : value.toString();
		editButton.setText(text);
		return editButton;
	}

	public Object getCellEditorValue() {
		return text;
	}

	public void actionPerformed(ActionEvent e) {
		fireEditingStopped();
		System.out.println(e.getActionCommand() + "   :    "
				+ table.getSelectedRow());
	}
}



OVER~~~


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