如何用布爾數據類型模仿JTable中的單選按鈕行爲

Question

package com.tweeteye.gui.model; 

import java.util.ArrayList; 
import java.util.List; 

import javax.swing.table.AbstractTableModel; 

import com.tweeteye.entity.ImageRecord; 
import com.tweeteye.entity.enumiration.SearchTypeEnum; 
import com.tweeteye.gui.MainWindow; 
import javax.swing.ImageIcon; 


public class ImageTableModel extends AbstractTableModel 
{ 
    private static final long serialVersionUID = 1669175969068584634L; 
    protected SearchTypeEnum type; 
    public List<ImageRecord> dataList = new ArrayList<ImageRecord>(); 


    @SuppressWarnings("rawtypes") 
    private Class[] columnTypes = { java.lang.Boolean.class,javax.swing.ImageIcon.class, 
      javax.swing.ImageIcon.class, java.lang.Object.class }; 
    private String[] columnNames = {"Select","Logo","Image","Title"}; 

    public List<ImageRecord> getData() { 
     return dataList; 
    } 

    public void setData(List<ImageRecord> dataList) { 
     this.dataList = dataList; 
    } 

    @SuppressWarnings({ "rawtypes", "unchecked" }) 
     @Override 
    public Class getColumnClass(int column) { 
     return columnTypes[column]; 
    } 
    public String getColumnName(int col) { 
     return columnNames[col].toString(); 
    } 


    public void setValueAt(Object arg0, int arg1, int arg2) {  
     ImageRecord imageRecord=dataList.get(arg1); 
     if (arg2 == 0) {      
      imageRecord.setSelected((Boolean) arg0);       
     } 

     fireTableCellUpdated(arg1, arg2); 
    } 

    public Object getValueAt(int arg0, int arg1) { 
     if (arg1 == 0) 
      return dataList.get(arg0).getSelected(); 
     if (arg1 == 1) 
      return dataList.get(arg0).getImage(); 
     else 
      return dataList.get(arg0).getTitle(); 
    } 

    @Override 
    public boolean isCellEditable(int row, int column) { 
     if (column == 0) 
      return true; 
     else 
      return false; 
    } 

    public int getColumnCount() { 
     return columnTypes.length; 
    } 

    public int getRowCount() {  
     return dataList.size(); 
    } 

    public SearchTypeEnum getType() { 
     return type; 
    } 

    public void setType(SearchTypeEnum type) { 
     this.type = type; 
    } 


} 

現在我只想在「Selected」列中選中一個複選框。我從eBay獲取產品信息並將其顯示在表格中，我的第一列包含複選框，但我希望單選按鈕。如何完成此操作。

Answer 1

用戶克列奧帕特拉強調，我最後的答案違反了編碼標準，因此，這是模型本身內的有效的解決方案。

由於表模型處理表中的所有數據處理，很容易通過稍微修改您的setValeAt（）方法包括代碼，這是否模仿單選按鈕的行爲。

考慮下面的代碼：

public void setValueAt(Object arg0, int arg1, int arg2) { 

    if (arg2 == 0) {     
     boolean checked = (Boolean)arg0; 

     if(checked){ 
      //Handle if user checked a box. 

      //Iterate through all rows 
      for(int i = 0; i < getRowCount();i++){ 
       boolean isSelected = dataList.get(i).getSelected(); 

       if(isSelected != (i == arg1)){ 
        dataList.get(i).setSelected(i == arg1); 
        fireTableCellUpdated(i, 0); 
       } 
      } 
     }else{ 
      //Handle if user unchecks the box. 
     }    
    }else if(!(dataList.set(arg1, arg0).equals(arg0))){ 
     fireTableCellUpdated(arg1, arg2); 
    } 
} 

的代碼首先檢查是否被設置的值是一個選擇框（在列0），則前進到設置所有其它列0的值設置爲false內for循環（遍歷行）。