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我擴展了AbstractTableModel類以使我的JTable不可編輯，期望第一行。順便說一下，我已經重寫了isCellEditable（int row，int col）方法。通過放置一個整數變量，使nextRow激活，我得到了第一行尊重我的creterias.So，問題是使下一行當前行第零列中的單元格由用戶填充（數據已更改且必須具有值）時激活.Her是迄今爲止的代碼。將不可編輯的JTable行動態設置爲可編輯
package MODEL.tableModel;
import MODEL.Produit;
import MODEL.ProduitInBonDachat;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.List;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableModel;
public class BonDachatTableModel extends AbstractTableModel implements TableModelListener {
private String headerTitle[] = {"Designation", "Qté", "Prix Unitaire", "Sous Total"};
private List<ProduitInBonDachat> data;
// variable that hold the next
private int nextActiveRow = 0;
public BonDachatTableModel() {
data = new ArrayList<ProduitInBonDachat>();
}
@Override
public String getColumnName(int i) {
return headerTitle[i];
}
@Override
public int getRowCount() {
return 10;
}
@Override
public int getColumnCount() {
return headerTitle.length;
}
public void tableChanged(TableModelEvent event) {
int col = event.getColumn();
int fRow = event.getFirstRow();
if ((col == 1) && (col == 2)) {
setValueAt(getValueAt(fRow, col), fRow, col);
fireTableCellUpdated(fRow, col);
}
}
public Object getValueAt(int row, int col) {
try {
data.get(row);
} catch (IndexOutOfBoundsException e) {
return null;
}
ProduitInBonDachat pInBonDachat = data.get(row);
switch (col) {
case 0:
if (pInBonDachat.getDesignationProduit() == null) {
return null;
}
if(!pInBonDachat.getDesignationProduit().isEmpty()){
nextActiveRow++ ;
fireTableCellUpdated(row, col);
}
return pInBonDachat.getDesignationProduit();
case 1:
if (pInBonDachat.getQte() == null) {
return null;
}
return pInBonDachat.getQte();
case 2:
if (pInBonDachat.getPrixDeVente() == null) {
return null;
}
return pInBonDachat.getPrixDeVente();
case 3:
if (pInBonDachat.getPrixDeVente() == null || pInBonDachat.getQte() == null) {
return null;
}
return pInBonDachat.getQte().multiply(pInBonDachat.getPrixDeVente());
default:
return null;
}
}
public boolean isCellEditable(int row, int col) {
if(col == 1 || col == 2 || row == nextActiveRow)
return true;
else
return false ;
}
@Override
public void setValueAt(Object value, int row, int col) {
ProduitInBonDachat tableEtry;
try {
tableEtry = data.get(row);
} catch (IndexOutOfBoundsException e) {
tableEtry = new ProduitInBonDachat();
data.add(row, tableEtry);
}
switch (col) {
case 0:
tableEtry.setDesignationProduit((String) value);
nextRowActive();
fireTableCellUpdated(int row, int col);
break;
case 1:
tableEtry.setQte((BigDecimal) value);
break;
case 2:
tableEtry.setPrixDeVente((BigDecimal) value);
break;
default:
super.setValueAt(value, row, col);
}
}
@Override
public Class<?> getColumnClass(int col) {
switch (col) {
case 0:
return String.class;
case 1:
return BigDecimal.class;
case 2:
return BigDecimal.class;
case 3:
return BigDecimal.class;
default:
return super.getColumnClass(col);
}
}
public void nextRowActive(){
nextActiveRow++;
}
}
查看「isCellEditable」方法中的最後一個「返回true」嗎？這意味着如果它不是第一列而不是nextActiveRow，那麼單元格將可編輯... – MadProgrammer
我已更改isCellEditable（int row，int col）;方法，但我的問題是增加nextActiveRow變量只有當（nextActiveRow，0）中的單元格填充一些值，所以nextActiveRow ++變得可編輯。 –
在這種情況下，當調用'setValueAt'時，您需要對當前行的有效性進行評估，並相應地更新'nextActiveRow' ... – MadProgrammer