[英]Disabling JButton Inside JTable
我试图制作一个应用程序,它将从数据库中检索一些数据并将数据填充到JTable中。 在表中将有2个按钮,它们将更新数据库列的状态字段(这是该行的模型的自定义对象)。
完成此操作后,该行/对象的第一个按钮将被禁用,第二个按钮将被启用。
我尝试使用JButtonColumn作为测试,但是问题是当我单击2个不同的按钮时,它们之间的其他按钮也被禁用。 到目前为止,这是我尝试过的:
import java.awt.event.ActionEvent;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
public class JavaApplication1 extends JFrame {
private static final long serialVersionUID = 1L;
private JTable table;
private MyTableModel myModel = new MyTableModel();
public JavaApplication1() {
table = new JTable(myModel);
addTableDatas();
table.setPreferredScrollableViewportSize(table.getPreferredSize());
JScrollPane scrollPane = new JScrollPane(table);
add(scrollPane);
ButtonColumn buttonColumn = new ButtonColumn(table, delete, 3);
buttonColumn.setMnemonic(KeyEvent.VK_D);
}
public static void main(String[] args) {
JavaApplication1 frame = new JavaApplication1();
frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
private void addTableDatas() {
Vector<String> columnNameS = new Vector<String>();
columnNameS.add("Date");
columnNameS.add("String");
columnNameS.add("Decimal");
columnNameS.add("Remove");
myModel.setColumnNames(columnNameS);
Vector<Object> row1 = new Vector<Object>();
row1.add(new Date());
row1.add("A");
row1.add(new Double(5.1));
row1.add("Remove");
myModel.addRow(row1);
row1 = new Vector<Object>();
row1.add(new Date());
row1.add("B");
row1.add(new Double(6.2));
row1.add("Remove");
myModel.addRow(row1);
row1 = new Vector<Object>();
row1.add(new Date());
row1.add("B");
row1.add(new Double(8.4));
row1.add("Remove");
myModel.addRow(row1);
row1 = new Vector<Object>();
row1.add(new Date());
row1.add("B");
row1.add(new Double(5.1));
row1.add("Remove");
myModel.addRow(row1);
row1 = new Vector<Object>();
row1.add(new Date());
row1.add("B");
row1.add(new Double(6.2));
row1.add("Remove");
myModel.addRow(row1);
}
private class MyTableModel extends AbstractTableModel {
private static final long serialVersionUID = 1L;
private Vector<Vector<Object>> data;
private Vector<String> colNames;
private boolean[] _columnsVisible = {true, true, true, true};
public MyTableModel() {
this.colNames = new Vector<String>();
this.data = new Vector<Vector<Object>>();
}
public MyTableModel(Vector<String> colnames) {
this.colNames = colnames;
this.data = new Vector<Vector<Object>>();
}
public void resetTable() {
this.colNames.removeAllElements();
this.data.removeAllElements();
}
public void setColumnNames(Vector<String> colNames) {
this.colNames = colNames;
this.fireTableStructureChanged();
}
public void addRow(Vector<Object> data) {
this.data.add(data);
this.fireTableRowsInserted(data.size() - 1, data.size() - 1);
}
public void removeRowAt(int row) {
this.data.removeElementAt(row);
this.fireTableRowsDeleted(row - 1, data.size() - 1);
}
@Override
public int getColumnCount() {
return this.colNames.size();
}
@Override
public Class<?> getColumnClass(int colNum) {
switch (colNum) {
case 0:
return Date.class;
case 2:
return Double.class;
default:
return String.class;
}
}
@Override
public boolean isCellEditable(int row, int colNum) {
switch (colNum) {
default:
return true;
}
}
@Override
public String getColumnName(int colNum) {
return this.colNames.get(colNum);
}
@Override
public int getRowCount() {
return this.data.size();
}
@Override
public Object getValueAt(int row, int col) {
Vector<Object> value = this.data.get(row);
return value.get(col);
}
@Override
public void setValueAt(Object newVal, int row, int col) {
Vector<Object> aRow = data.elementAt(row);
aRow.remove(col);
aRow.insertElementAt(newVal, col);
fireTableCellUpdated(row, col);
}
public void setColumnVisible(int index, boolean visible) {
this._columnsVisible[index] = visible;
this.fireTableStructureChanged();
}
}
//
private Action delete = new AbstractAction() {
private static final long serialVersionUID = 1L;
public void actionPerformed(ActionEvent e)
{
JTable table = (JTable) e.getSource();
int modelRow = Integer.valueOf(e.getActionCommand());
//(MyTableModel) table.getModel()).removeRowAt(modelRow);
//table.clearSelection();
}
};
}
JButtonColumn.Java:
import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.border.*; import javax.swing.table.*; public class ButtonColumn extends AbstractCellEditor implements TableCellRenderer, TableCellEditor, ActionListener,MouseListener { private JTable table; private Action action; private int mnemonic; private Border originalBorder; private Border focusBorder; private JButton renderButton; private JButton editButton; private Object editorValue; private boolean isButtonColumnEditor; public ButtonColumn(JTable table, Action action, int column) { this.table = table; this.action = action; renderButton = new JButton(); editButton = new JButton(); editButton.setFocusPainted( false ); editButton.addActionListener( this ); originalBorder = editButton.getBorder(); setFocusBorder( new LineBorder(Color.BLUE) ); TableColumnModel columnModel = table.getColumnModel(); columnModel.getColumn(column).setCellRenderer( this ); columnModel.getColumn(column).setCellEditor( this ); table.addMouseListener( this ); } public Border getFocusBorder() { return focusBorder; } public void setFocusBorder(Border focusBorder) { this.focusBorder = focusBorder; editButton.setBorder( focusBorder ); } public int getMnemonic() { return mnemonic; } public void setMnemonic(int mnemonic) { this.mnemonic = mnemonic; renderButton.setMnemonic(mnemonic); editButton.setMnemonic(mnemonic); } @Override public Component getTableCellEditorComponent(JTable table, Object value,boolean isSelected, int row, int column) { if (value == null) { editButton.setText( "" ); editButton.setIcon( null ); } else if (value instanceof Icon) { editButton.setText( "" ); editButton.setIcon( (Icon)value ); } else { editButton.setText( value.toString() ); editButton.setIcon( null ); } this.editorValue = value; return editButton; } @Override public Object getCellEditorValue() { return editorValue; } public Component getTableCellRendererComponent( JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) { if (isSelected) { renderButton.setForeground(table.getSelectionForeground()); renderButton.setBackground(table.getSelectionBackground()); } else { renderButton.setForeground(table.getForeground()); renderButton.setBackground(UIManager.getColor("Button.background")); } if (hasFocus) { renderButton.setBorder( focusBorder ); } else { renderButton.setBorder( originalBorder ); } if (value == null) { renderButton.setText( "" ); renderButton.setIcon( null ); } else if (value instanceof Icon) { renderButton.setText( "" ); renderButton.setIcon( (Icon)value ); } else { renderButton.setText( value.toString() ); renderButton.setIcon( null ); } return renderButton; } public void actionPerformed(ActionEvent e) { int row = table.convertRowIndexToModel( table.getEditingRow() ); fireEditingStopped(); // Invoke the Action ActionEvent event = new ActionEvent( table, ActionEvent.ACTION_PERFORMED, "" + row); action.actionPerformed(event); } public void mousePressed(MouseEvent e) { if (table.isEditing() && table.getCellEditor() == this) isButtonColumnEditor = true; } public void mouseReleased(MouseEvent e) { if (isButtonColumnEditor && table.isEditing()) table.getCellEditor().stopCellEditing(); //Disabling the button here renderButton.setEnabled(false); System.out.println("ROW CLICKED"); isButtonColumnEditor = false; } public void mouseClicked(MouseEvent e) {} public void mouseEntered(MouseEvent e) {} public void mouseExited(MouseEvent e) {} }
该类是ButtonColumn
。 请参阅: 表格按钮列 。
您不能只禁用编辑器中的按钮。 该按钮由表中的所有行共享。 这是所有渲染器/编辑器工作的方式。
您将需要自定义渲染器/编辑器代码。 也就是说,您将需要重写TableModel的isCellEditable(...)
,以根据表中的数据确定何时可编辑单元格:
然后,您可以自定义渲染器中按钮的禁用状态:
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