怎样在指定的table单元格处生成下拉列表

发布: 2007-7-04 13:34 | 作者: admin | 来源: 　网友评论 | 查看: 16次 | 进入软件测试论坛讨论

在写table时花了本人几天的时间，最后终于搞定了，与大家共同分享。
以下是调用方法：
/****************************************************************/

DefaultTableModel model = new DefaultTableModel(); //
/*设置表格模型*/
model.setDataVector(rowDatas, tableHeadName);

/*表格使用模型*/
// JBTable table = new JBTable(tableModel);
JBTable table = new JBTable();
table.setRowSelectionAllowed(true); //add
table.setModel(model);
JTextField text = new JTextField(); //

JComboBox com_size = new JComboBox(); //字体大小
com_size.addItem("1");
com_size.addItem("2");
com_size.addItem("3");
com_size.addItem("4");
com_size.addItem("5");
com_size.addItem("6");

JBMutiTypeEditor com_edit = new JBMutiTypeEditor(text, com_size); //
TableColumn aColumn1 = table.getColumn("属性");
aColumn1.setCellEditor(com_edit);

/****************************************************************/
上边代码没什么特别的，关键在以下的类。

package jbpd.application;

import javax.swing.*;
import java.awt.event.*;
import java.util.*;
import java.awt.*;
import javax.swing.table.*;
import java.util.EventObject;
import javax.swing.table.*;

class JBMutiTypeEditor
extends DefaultCellEditor {
JTable editingTable = new JTable();
JTextField textComponent;
JComboBox comboComponent;
boolean textOrNot = true;

public JBMutiTypeEditor(JTextField text, JComboBox combo) {
super(text);
textComponent = text;
comboComponent = combo;
}

public void setTextOrNot(boolean textOrNot) {
this.textOrNot = textOrNot;
}

public Component getTableCellEditorComponent(JTable table, Object value,
boolean isSelected,
int row, int column) {
editingTable = table;
String flag = (String) table.getValueAt(row, 0);
//与jbpage表中的“页面字体”列对应
if (flag.equals("存储方式") || flag.equals("是否被选中")) {
String item = (value != null) ? value.toString() : "1";
DefaultComboBoxModel model = (DefaultComboBoxModel) comboComponent.
getModel();
for (int i = 0; i < model.getSize(); i++) {
String aItem = (String) model.getElementAt(i);
if (aItem.equals(item)) {
comboComponent.setSelectedIndex(i);
}
}
return comboComponent;
}
if (flag.equals("字体大小") && row == 3) {
String item = (value != null) ? value.toString() : "1";
DefaultComboBoxModel model = (DefaultComboBoxModel) comboComponent.
getModel();
for (int i = 0; i < model.getSize(); i++) {
String aItem = (String) model.getElementAt(i);
if (aItem.equals(item)) {
comboComponent.setSelectedIndex(i);
}
}
return comboComponent;
}
else {
textComponent.setText( (value != null) ? value.toString() : "");
return textComponent;
}
}

public boolean stopCellEditing() {
JTable aTable = this.editingTable;
int rowNo = aTable.getEditingRow();
String flag = "";
if (rowNo != -1) {
flag = (String) aTable.getValueAt(rowNo, 0);
}
if (flag.equals("存储方式")|| flag.equals("是否被选中")) {
this.delegate.setValue(comboComponent.getSelectedItem());
}
if(flag.equals("字体大小")){
this.delegate.setValue(comboComponent.getSelectedItem());
}
return super.stopCellEditing();
}
}