checkboxcelleditor.java

来自「大型数据库课程设计源码」· Java 代码 · 共 55 行

package com.vbank.admin.component;

import java.awt.Component;

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

public class CheckBoxCellEditor extends DefaultCellEditor {
	  private static JCheckBox m_checkBox = new JCheckBox();
	  private int selectnum;
	  public CheckBoxCellEditor() {
	      super(m_checkBox);
	      m_checkBox.setOpaque(false);
	      m_checkBox.setHorizontalAlignment(JLabel.CENTER);
	  }
	  public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
	      if (value instanceof Boolean&&column!=1)
	      {
	        Boolean b = (Boolean) value;
	        m_checkBox.setSelected(b.booleanValue());
	        System.out.println("当前选择状态："+b.booleanValue());
	        System.out.println("当前行："+row);
	          //为什么false才行，待解
	        if((b.booleanValue())==false){
	          if(selectnum<14){
	            selectnum++;
	            System.out.println("已选择" + selectnum + "项!\n");
	          }
	          else{
	            JOptionPane.showMessageDialog(null,"只能选择两项，请重新选择！");
	          }
	        }
	        else{
	          selectnum--;
	          System.out.println("已选择" + selectnum + "项!\n");
	        }
	      }

	      m_checkBox.setBackground(isSelected ? table.getSelectionBackground() : table.getBackground());
	      m_checkBox.setForeground(isSelected ? table.getSelectionForeground() : table.getForeground());
	      /**
	      * Component component = getComponent(); if (component instanceof JCheckBox){ m_checkBox = (JCheckBox)component;
	      *
	      *
	      * table.setValueAt(Boolean.valueOf(String.valueOf(m_checkBox.isSelected())),row,column); return m_checkBox; } else return component;
	      */
	      return m_checkBox;
	  }
	  public Object getCellEditorValue() {
	      return new Boolean(m_checkBox.isSelected());
	  }
	}