Java表格模型事件示例-白红宇

Java表格模型事件示例

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发布时间：2019-06-13

本文共 7683 字，大约阅读时间需要 25 分钟。

package com.han;import java.awt.BorderLayout;import java.awt.Container;import java.awt.Point;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.InputEvent;import java.awt.event.MouseAdapter;import java.awt.event.MouseEvent;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;import java.util.Arrays;import java.util.Vector;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JOptionPane;import javax.swing.JPanel;import javax.swing.JScrollPane;import javax.swing.JTable;import javax.swing.JTextField;import javax.swing.ListSelectionModel;import javax.swing.event.TableModelEvent;import javax.swing.event.TableModelListener;import javax.swing.table.DefaultTableModel;import javax.swing.table.JTableHeader;import javax.swing.table.TableColumnModel;/** * 表格模型事件示例 *  * 
A component generally gains the focus when the user clicks it,  * or when the user tabs between components, or otherwise interacts  * with a component. A component can also be given the focus programmatically, * such as when its containing frame or dialog-box is made visible.  * The snippet of the codes below shows how to give a particular component   * the focus every time the window gains the focus. *  * @author HAN *  */public class TableModelEvent_1 extends JFrame {	/**	 * 	 */	private static final long serialVersionUID = -8581492063632813033L;	public TableModelEvent_1() {		// TODO Auto-generated constructor stub		final Container container = getContentPane();		Vector
     
       tableColumnNames = new Vector
      
       ();		tableColumnNames.add("A");		tableColumnNames.add("B");		Vector
       
        
         > tableValues = new Vector
         
          
           >(); for (int i = 1; i < 5; i++) { Vector
           
             vector = new Vector
            
             (); vector.add("A" + i); vector.add("B" + i); tableValues.add(vector); } final DefaultTableModel defaultTableModel = new DefaultTableModel( tableValues, tableColumnNames); final JTable table = new JTable(defaultTableModel); JScrollPane scrollPane = new JScrollPane(); scrollPane.setViewportView(table); container.add(scrollPane, BorderLayout.CENTER); JPanel panel = new JPanel(); container.add(panel, BorderLayout.SOUTH); JLabel labelA = new JLabel("A: "); final JTextField textFieldA = new JTextField(15); JLabel labelB = new JLabel("B: "); final JTextField textFieldB = new JTextField(15); JButton buttonAdd = new JButton("添加"); JButton buttonDel = new JButton("删除"); JButton buttonDeselected = new JButton("取消选择"); panel.add(labelA); panel.add(textFieldA); panel.add(labelB); panel.add(textFieldB); panel.add(buttonAdd); panel.add(buttonDel); panel.add(buttonDeselected); buttonAdd.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub int[] selectedRows = table.getSelectedRows(); // table // 默认情况容许多行选择 Vector
             
               rowData = new Vector
              
               (); rowData.add(textFieldA.getText()); rowData.add(textFieldB.getText()); if (selectedRows.length == 0) { defaultTableModel.addRow(rowData); textFieldA.setText(null); textFieldB.setText(null); } else if (selectedRows.length == 1) {// System.out.println(selectedRows[0]); defaultTableModel.insertRow(selectedRows[0] + 1, rowData); textFieldA.setText(null); textFieldB.setText(null); } else { JOptionPane.showMessageDialog(container, "Your operation is forbidden", "Warning", JOptionPane.WARNING_MESSAGE); } } }); buttonDel.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub int[] selectedRows = table.getSelectedRows(); // table // 默认情况容许多行选择 for (int i = 0; i < selectedRows.length; i++) {// System.out.println(selectedRows[i]); defaultTableModel.removeRow(selectedRows[i] - i); } } }); buttonDeselected.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub table.clearSelection(); } }); scrollPane.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) {// System.out.println("here"); if (e.getClickCount() == 1 && e.getButton() == MouseEvent.BUTTON1) { table.clearSelection(); } } }); // make the text field focused every time the window is activated addWindowFocusListener(new WindowAdapter() { @Override public void windowGainedFocus(WindowEvent e) { // TODO Auto-generated method stub textFieldA.requestFocus(); } }); // ************************************************************** // This is a standard snippet to realize the desired column selection as in // Excel // ************************************************************** // row selection mode table.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION); // column selection mode TableColumnModel tableColumnModel = table.getColumnModel(); tableColumnModel.getSelectionModel().setSelectionMode( ListSelectionModel.MULTIPLE_INTERVAL_SELECTION); // allow the column selection (the row selection is allowed by default) table.setColumnSelectionAllowed(true); final JTableHeader tableHeader = table.getTableHeader(); tableHeader.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { // TODO Auto-generated method stub // Extended modifiers represent the state of all modal keys, // such as ALT, CTRL, META. if (e.getClickCount() == 1 && e.getButton() == MouseEvent.BUTTON1) { // Point point = new Point(e.getX(), e.getY()); Point point = new Point(e.getPoint()); int columnNum = tableHeader.columnAtPoint(point); // System.out.println(columnNum); int[] selectedColumns = table.getSelectedColumns(); if (selectedColumns.length != 0) { // System.out.println("here1"); // System.out.println(InputEvent.getModifiersExText(e.getModifiersEx())); if (e.getModifiersEx() == (InputEvent.CTRL_DOWN_MASK)) {// System.out.println("ctrl"); if (Arrays.binarySearch(selectedColumns, columnNum) >= 0) { table.removeColumnSelectionInterval(columnNum, columnNum); } else { table.addColumnSelectionInterval(columnNum, columnNum); } } else if (e.getModifiersEx() == (InputEvent.SHIFT_DOWN_MASK)) { // System.out.println("shift"); table.setColumnSelectionInterval( selectedColumns[0], columnNum); } else { table.setColumnSelectionInterval(columnNum, columnNum); } } else { // System.out.println("here2"); table.setColumnSelectionInterval(columnNum, columnNum); } table.setRowSelectionInterval(0, table.getRowCount() - 1); } } }); defaultTableModel.addTableModelListener(new TableModelListener() { @Override public void tableChanged(TableModelEvent e) { // TODO Auto-generated method stub int type = e.getType(); int firstRow = e.getFirstRow();// int lastRow = e.getLastRow(); // the last row seems to be always equal to the first row int column = e.getColumn(); switch (type) { case TableModelEvent.DELETE: System.out.print("此次事件由 删除 行触发："); System.out.println("此次删除的是第 " + firstRow + " 行"); break; case TableModelEvent.INSERT: System.out.print("此次事件由 插入 行触发："); System.out.println("此次插入的是第 " + firstRow + " 行"); break; case TableModelEvent.UPDATE: System.out.print("此次事件由 更新 行触发："); System.out.println("此次更新的是第 " + firstRow + " 行第 " + column + " 列"); break; default: System.out.println("此次事件由 其他原因 触发"); } } }); } /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub TableModelEvent_1 frame = new TableModelEvent_1(); frame.setTitle("表格模型事件示例"); frame.pack(); //Realize the components.// frame.setBounds(100, 100, 600, 300);// textFieldA.requestFocus(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); //Display the window. }}