JTable prepareEditor的工作原理
我不明白prepareEditor是如何工作的，我无法使用prepareEditor中的Action为prepareRenderer设置可见性规则，因为我在附加的Image中捕获了
1.st行的规则按预期工作，如果没有选择JCheckBox，其他TableCells是不可见的（使用JTable选择hightlighter），但如果我在1.st TableColumn中选择JCheckBox，那么我不能只显示规则+ Mail TableColumn，只显示TableRow中的所有组件，我该怎样才能实现
import java.awt.Component; import javax.swing.*; import javax.swing.event.*; import javax.swing.table.*; public class TableWithCheckBoxOrBlank { private Object[] columns = new Object[]{ "Select", "Name", "Rule", "Mail", "Include", "Phone"}; private Object[][] data = { {false, "Bill", false, "Blabla@bla", false, "00 000 000"}, {false, "Edd", false, "Blabla@bla", false, "00 000 000"}, {false, "Paul", false, "Blabla@bla", false, "00 000 000"}, {false, "ZOO", false, "Blabla@bla", false, "00 000 000"}}; public void makeUI() { DefaultTableModel model = new DefaultTableModel(data, columns) { private static final long serialVersionUID = 1L; @Override public boolean isCellEditable(int row, int column) { return column != 1; } @Override public Class getColumnClass(int columnIndex) { switch (columnIndex) { case 0: return Boolean.class; case 1: return String.class; case 2: return Boolean.class; case 3: return String.class; case 4: return Boolean.class; case 5: return String.class; } return null; } }; final JTable table = new JTable(model) { private static final long serialVersionUID = 1L; @Override public Component prepareRenderer(TableCellRenderer renderer, int row, int column) { Component c = super.prepareRenderer(renderer, row, column); if (column == 0 || column == 1 || (Boolean) getValueAt(row, 0)) { return c; } return Box.createRigidArea(c.getPreferredSize()); } @Override public Component prepareEditor(TableCellEditor editor, int row, int column) { Component c = super.prepareEditor(editor, row, column); if (column == 0 || column == 1 || (Boolean) getValueAt(row, 0)) { return c; } return Box.createRigidArea(c.getPreferredSize()); } }; model.addTableModelListener(new TableModelListener() { @Override public void tableChanged(TableModelEvent e) { if (e.getColumn() == 0) { if ((Boolean) table.getValueAt(table.getSelectedRow(), 0)) { table.setValueAt(Boolean.FALSE, table.getSelectedRow(), 2); } table.repaint(); } } }); JScrollPane scroll = new JScrollPane(table); table.setPreferredScrollableViewportSize(table.getPreferredSize()); JFrame frame = new JFrame("Table With Check Box Or Blank"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLocation(150, 150); frame.add(scroll); frame.pack(); frame.setVisible(true); } public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { new TableWithCheckBoxOrBlank().makeUI(); } }); } } +++
编辑真的没有包括，我看不到森林的树木:-(
多亏了@camickr眼睛之间的踢，各处都有很多重大错误/问题……
import java.awt.Component; import javax.swing.*; import javax.swing.event.*; import javax.swing.table.*; public class TableWithCheckBoxOrBlank { private Object[] columns = new Object[]{ "Select", "Name", "Rule", "Mail", "Include", "Phone"}; private Object[][] data = { {false, "Bill", false, "Blabla@bla", false, "00 000 000"}, {false, "Edd", false, "Blabla@bla", false, "00 000 000"}, {false, "Paul", false, "Blabla@bla", false, "00 000 000"}, {false, "ZOO", false, "Blabla@bla", false, "00 000 000"}}; public void makeUI() { DefaultTableModel model = new DefaultTableModel(data, columns) { private static final long serialVersionUID = 1L; @Override public boolean isCellEditable(int row, int column) { if (column == 0 || column == 2 || column == 4) { return true; } if (column == 1 || column == 3 || column == 5) { return false; } return (Boolean) getValueAt(row, 0); } @Override public Class getColumnClass(int columnIndex) { switch (columnIndex) { case 0: return Boolean.class; case 1: return String.class; case 2: return Boolean.class; case 3: return String.class; case 4: return Boolean.class; case 5: return String.class; } return null; } }; final JTable table = new JTable(model) { private static final long serialVersionUID = 1L; @Override public Component prepareRenderer(TableCellRenderer renderer, int row, int column) { Component c = super.prepareRenderer(renderer, row, column); if ((column == 4 || column == 5) && (Boolean) getValueAt(row, 2)) { return c; } else if ((column == 2 || column == 3) && (Boolean) getValueAt(row, 0)) { return c; } else if (column == 0 || column == 1) { return c; } return Box.createRigidArea(c.getPreferredSize()); } @Override public Component prepareEditor(TableCellEditor editor, int row, int column) { Component c = super.prepareEditor(editor, row, column); if ((column == 4 || column == 5) && (Boolean) getValueAt(row, 2)) { return c; } else if ((column == 2 || column == 3) && (Boolean) getValueAt(row, 0)) { return c; } else if (column == 0 || column == 1) { return c; } return Box.createRigidArea(c.getPreferredSize()); } }; model.addTableModelListener(new TableModelListener() { @Override public void tableChanged(TableModelEvent e) { if (e.getColumn() == 0) { if ((Boolean) table.getValueAt(table.getSelectedRow(), 0)) { table.setValueAt(Boolean.FALSE, table.getSelectedRow(), 2); } table.repaint(); } else if (e.getColumn() == 2) { if ((Boolean) table.getValueAt(table.getSelectedRow(), 2)) { table.setValueAt(Boolean.FALSE, table.getSelectedRow(), 4); } table.repaint(); } } }); JScrollPane scroll = new JScrollPane(table); table.setPreferredScrollableViewportSize(table.getPreferredSize()); JFrame frame = new JFrame("Table With Check Box Or Blank"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLocation(150, 150); frame.add(scroll); frame.pack(); frame.setVisible(true); } public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { new TableWithCheckBoxOrBlank().makeUI(); } }); } }
我认为prepareRenderer(...)代码应该是：
public Component prepareRenderer(TableCellRenderer renderer, int row, int column) { Component c = super.prepareRenderer(renderer, row, column); if ((column == 2 || column == 3) && (Boolean)getValueAt(row, 0)) { return c; } // if (column == 0 || column == 1 || (Boolean) getValueAt(row, 0)) { if (column == 0 || column == 1) { return c; } return Box.createRigidArea(c.getPreferredSize()); }
然后你应该摆脱prepareEditor(...)代码。 相反，你应该在isCellEditable(...)方法中有更多的逻辑。 就像是：
public boolean isCellEditable(int row, int column) { if (column == 0) return true; if (column == 1 || column == 4 || column == 5) return false; return (Boolean)getValueAt(row, 0); }