Установка флажка в абстрактной модели таблицы

Question

Мы пытаемся реализовать модель таблицы, которая расширяет абстрактную модель таблицы. Мы внедрили флажок в абстрактной модели таблицы. До сих пор мы не можем изменить значение флажка. Пожалуйста, дайте нам несколько предложений.

Вот код FileTableModel:

import javax.swing.table.AbstractTableModel; 
import java.text.SimpleDateFormat; 

public class FileTableModel extends AbstractTableModel { 

    private FileList sourceList; 
    private FileList targetList; 
    private ActionList actionList; 

    private final String[] COLUMN_NAME = {"Name(Source)", "Size(B)", "Last modified", "Action", 
     "Name(Target)", "Size(B)", "Last modified"}; 

    private Class[] columnClasses = new Class[]{ 
     String.class, Long.class, SimpleDateFormat.class, String.class, 
     String.class, Long.class, SimpleDateFormat.class, 
    }; 

    public FileTableModel(FileList sourceList, FileList targetList, ActionList actionList) { 
     this.sourceList = sourceList; 
     this.targetList = targetList; 
     this.actionList = actionList; 
    } 

    public int getColumnCount() { 
     return 7; 
    } // A constant for this model 


    public int getRowCount() { 
     return targetList.size(); 
    } // # of files in dir 


    public String getColumnName(int col) { 
     return COLUMN_NAME[col]; 
    } 


    public Class getColumnClass(int col) { 
     return columnClasses[col]; 
    } 

    public Object getValueAt(int row, int col) { 
     switch (col) { 
      case 0: 
       if (sourceList.get(row) != null) return sourceList.get(row).getName(); 
       else return ""; 
      case 1: 
       if (sourceList.get(row) != null) { 
        if (!sourceList.get(row).isDirectory()) 
         return new Long((sourceList.get(row).length())); 
        else return "<Folder>"; 
       } else return ""; 

      case 2: 
       SimpleDateFormat sourceDate = new SimpleDateFormat("HH:mm:ss"); 
       if (sourceList.get(row) != null) 
        return sourceDate.format(sourceList.get(row).lastModified()); 
       else return ""; 

      case 3: 
       if (actionList.get(row) != null) 
        return actionList.get(row); 
       else return ""; 
      case 4: 
       if (targetList.get(row) != null) return targetList.get(row).getName(); 
       else return ""; 
      case 5: 
       if (targetList.get(row) != null) { 
        if (!targetList.get(row).isDirectory()) 
         return new Long((targetList.get(row).length())); 
        else return "<Folder>"; 
       } else return ""; 
      case 6: 
       SimpleDateFormat targetDate = new SimpleDateFormat("HH:mm:ss"); 
       if (targetList.get(row) != null) 
        return targetDate.format(targetList.get(row).lastModified()); 
       else return ""; 

      default: 
       return null; 
     } 
    } 
} 

Answer 1

Ваша модель таблица в настоящее время доступен только для чтения. Добавьте этот метод, чтобы сделать его редактируемым:

@Override 
public boolean isCellEditable(int rowIndex, int columnIndex) { 
    return true; 
} 

Вы также можете сделать только определенные столбцы для редактирования:

private static final int COLUMN_INDEX_CHECK_BOX = 28; 

@Override 
public boolean isCellEditable(int rowIndex, int columnIndex) { 
    return columnIndex == COLUMN_INDEX_CHECK_BOX; 
} 

Answer 2

//package userinterface; 

//import core.ActionList; 
//import core.FileList; 

import javax.swing.table.AbstractTableModel; 
import java.text.SimpleDateFormat; 

public class FileTableModel extends AbstractTableModel { 

    private FileList sourceList; 
    private FileList targetList; 
    private ActionList actionList; 
    private Boolean[] checkList; 

    private final String[] COLUMN_NAME = {"Name(Source)", "Size(B)", "Last modified", "Action", 
      "Name(Target)", "Size(B)", "Last modified", "Enable action"}; 

    private Class[] columnClasses = new Class[]{ 
      String.class, Long.class, SimpleDateFormat.class, String.class, 
      String.class, Long.class, SimpleDateFormat.class, Boolean.class 
    }; 

    /** 
    * Constructor for class FileTableModel 
    * Usage: 
    * 
    * @param: 
    */ 
    public FileTableModel(FileList sourceList, FileList targetList, ActionList actionList) { 
     this.sourceList = sourceList; 
     this.targetList = targetList; 
     this.actionList = actionList; 
     this.checkList = new Boolean[1000]; 
     // Initialize all the values of checkList to false 
     for (int i = 0; i < 1000; i++) { 
      this.checkList[i] = true; 
     } 
    } 

    public void refreshTableModel(FileList sourceList, FileList targetList, ActionList actionList) { 
     sourceList.clear(); 
     targetList.clear(); 
     actionList.clear(); 
     this.sourceList = sourceList; 
     this.targetList = targetList; 
     this.actionList = actionList; 
     for (int i = 0; i < 1000; i++) { 
      this.checkList[i] = true; 
     } 
     this.fireTableDataChanged(); 
    } 

    /** 
    * @return 
    */ 
    public int getColumnCount() { 
     return 8; 
    } // A constant for this model 

    /** 
    * @return 
    */ 
    public int getRowCount() { 
     return targetList.size(); 
    } // # of files in dir 

    /** 
    * @param col 
    * @return 
    */ 
    public String getColumnName(int col) { 
     return COLUMN_NAME[col]; 
    } 

    /** 
    * @param col 
    * @return 
    */ 
    public Class<?> getColumnClass(int col) { 
     return columnClasses[col]; 
    } 

    /** 
    * @param row 
    * @param col 
    * @return 
    */ 

    @Override 
    public boolean isCellEditable(int row, int col) { 
     if (col == 7) 
      return true; 
     else return false; 
    } 

    @Override 
    public void setValueAt(Object aValue, int rowIndex, int columnIndex) { 
     if(checkList[rowIndex]) 
      checkList[rowIndex] = false; 
     else checkList[rowIndex] = true; 
     fireTableCellUpdated(rowIndex, columnIndex); 
    } 

    public Object getValueAt(int row, int col) { 
     switch (col) { 
      case 0: 
       if (sourceList.get(row) != null) return sourceList.get(row).getName(); 
       else return ""; 
      case 1: 
       if (sourceList.get(row) != null) { 
        if (!sourceList.get(row).isDirectory()) 
         return new Long((sourceList.get(row).length())); 
        else return "<Folder>"; 
       } else return ""; 

      case 2: 
       SimpleDateFormat sourceDate = new SimpleDateFormat("HH:mm:ss"); 
       if (sourceList.get(row) != null) 
        return sourceDate.format(sourceList.get(row).lastModified()); 
       else return ""; 

      case 3: 
       if (actionList.get(row) != null) 
        return actionList.get(row); 
       else return ""; 
      case 4: 
       if (targetList.get(row) != null) return targetList.get(row).getName(); 
       else return ""; 
      case 5: 
       if (targetList.get(row) != null) { 
        if (!targetList.get(row).isDirectory()) 
         return new Long((targetList.get(row).length())); 
        else return "<Folder>"; 
       } else return ""; 
      case 6: 
       SimpleDateFormat targetDate = new SimpleDateFormat("HH:mm:ss"); 
       if (targetList.get(row) != null) 
        return targetDate.format(targetList.get(row).lastModified()); 
       else return ""; 
      case 7: 
       return checkList[row]; 

      default: 
       return null; 
     } 
    } 



}