java - JTable prepareEditor 是如何工作的

Question

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，正如我在附加图像中捕获的那样

第 1.st 行的规则按我的预期工作，如果未选择 JCheckBox(也使用 JTable 选择 hightlighter)，其他 TableCells 是不可见的，但是如果我在 1.st TableColumn 中选择 JCheckBox，那么我不能仅显示 Rule + Mail TableColumn，仅显示 TableRow 中的所有组件，我该如何实现

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();
            }
        });
    }
}

+++

编辑真的没有电池，我看不到树木的森林:-(

感谢@camickr 的帮助，到处都有很多大错误/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();
            }
        });
    }
}

Answer 1

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());
        }

然后你应该去掉 prepareEditor(...) 代码。相反，您应该在 isCellEditable(...) 方法中包含更多逻辑。像这样的东西:

        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);
        }