Question

我有一个有两列的JTable。在第二列中，每行有一个不同的编辑器（JTextField，JComboBox和CheckComboBox）。到目前为止，这工作正常但是我已经实现了一个重置选项，它将整个JTable更改回原始状态（重置所有更改）。

我现在面临的问题是，当我使用setSelectedIndex编程更改ComboBox的索引时，我看到GUI中没有结果，尽管模型使用fireTableDataChanged触发其更改并且也被表的TableModelListener。当我查找更改的ComboBox时，我也得到了正确的索引，但它没有显示在GUI中。我还尝试了revalidate，updateUI和repaint方法，但没有任何变化。

问题可能在于它的架构（也许是渲染器？）。这是我的编辑/渲染类。

class VEachRowEditor implements TableCellEditor, TableCellRenderer {

protected Hashtable<Integer, TableCellEditor> editors;
protected TableCellEditor editor, defaultEditor, renderer;
JTable table;
VEachRowEditorManager rowmanager;

public VEachRowEditor(JTable table, VEachRowEditorManager rowmanager) {
    this.table = table;
    editors = new Hashtable<Integer, TableCellEditor>();
    defaultEditor = new DefaultCellEditor(new JTextField());
    this.rowmanager = rowmanager;
}

public void setEditorAt(int row, TableCellEditor editor) {
    if (editor instanceof DefaultCellEditor)
        ((DefaultCellEditor) editor).setClickCountToStart(1);
    editors.put(new Integer(row), editor);
}

public Component getTableCellEditorComponent(JTable table, Object value,
        boolean isSelected, int row, int column) {
    editor = (TableCellEditor) editors.get(new Integer(row));
    if (editor == null) {
        editor = defaultEditor;
    }
    return editor.getTableCellEditorComponent(table, value, isSelected,
            row, column);
}

public Object getCellEditorValue() {
    return editor.getCellEditorValue();
}

public final boolean stopCellEditing() {
    return editor.stopCellEditing();
}

public void cancelCellEditing() {
    editor.cancelCellEditing();
}

public boolean isCellEditable(EventObject anEvent) {
    selectEditor((MouseEvent) anEvent);
    return editor.isCellEditable(anEvent);
}

public void addCellEditorListener(CellEditorListener l) {
    editor.addCellEditorListener(l);
}

public void removeCellEditorListener(CellEditorListener l) {
    editor.removeCellEditorListener(l);
}

public boolean shouldSelectCell(EventObject anEvent) {
    selectEditor((MouseEvent) anEvent);
    return editor.shouldSelectCell(anEvent);
}

protected void selectEditor(MouseEvent e) {
    int row;
    if (e == null) {
        row = table.getSelectionModel().getAnchorSelectionIndex();
    } else {
        row = table.rowAtPoint(e.getPoint());
    }
    editor = (TableCellEditor) editors.get(new Integer(row));
    if (editor == null) {
        System.out.println(editor);
        editor = defaultEditor;
    }
}

@Override
public Component getTableCellRendererComponent(JTable table, Object value,
        boolean isSelected, boolean hasFocus, int row, int column) {
    renderer = (TableCellEditor) editors.get(new Integer(row));
    if (renderer == null) {
        renderer = defaultEditor;
    }

    return renderer.getTableCellEditorComponent(table, value, isSelected,
            row, column);
}

}

getTableCellEditorComponent错了吗？

rowmanager包含所有模型的所有JComboBox和CheckComboBox。

Answer 1

当我使用setSelectedIndex以编程方式更改ComboBox的索引时，我看不到GUI中的结果

渲染器和编辑器只显示模型中的数据。不要重置编辑器组件。

重置模型中的数据。即＆GT;

table.setValueAt(...); // or
table.getModel().setValueAt(...);

Java：JTable中的JComboBox - setSelectedIndex对GUI没有影响

1 个答案: