在Jtable单元格中的复选框旁边插入文本 [英] Inserting text alongside a checkbox in a Jtable cell

问题描述

我已经习惯了这一段时间了，我能找到的所有解决方案和工作示例都包含使用内置布尔TableCellRenderers呈现的复选框，即一个单元格只能有一个复选框。我没有找到任何工作示例，其中在该SAME单元​​格中的复选框旁边会有一些文本，或者更具体地说是允许复选框和文本的JCheckBox。

解决方案

当您的数据/要求不符合默认的可用功能时，您需要考虑提供自定义解决方案

我建议您首先查看

  import java.awt.BorderLayout; 
 import java.awt.EventQueue; 
 import java.util.ArrayList; 
 import java.util.List; 
 import javax.swing.JFrame; 
 import javax.swing.JPanel; 
 import javax.swing.JScrollPane; 
 import javax.swing.JTable; 
 import javax.swing.UIManager; 
 import javax.swing.UnsupportedLookAndFeelException; 
 import javax.swing.table.AbstractTableModel; 
 import javax.swing.table.DefaultTableModel; 
 
公共类测试{
 
 public static void main（String [] args）{
 new Test（）; 
} 
 
公共类数据{
 
私有字符串文本;选择
私有布尔值; 
 
 public Data（String text，boolean selected）{
 this.text = text; 
 this.selected =已选中; 
} 
 
 public String getText（）{
 return text; 
} 
 
 public void setText（String text）{
 this.text = text; 
} 
 
 public boolean isSelected（）{
 return selected; 
} 
 
 public void setSelected（boolean state）{
 this.selected = state; 
} 
 
} 
 
 public Test（）{
 EventQueue.invokeLater（new Runnable（）{
 @Override 
 public void run（）{
 try {
 UIManager.setLookAndFeel（UIManager.getSystemLookAndFeelClassName（））; 
} catch（ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex）{
 ex。 printStackTrace（）; 
} 
 
 JFrame frame = new JFrame（Testing）; 
 frame.setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）; 
 frame.add（new TestPane（））; 
 frame.pack（）; 
 frame.setLocationRelativeTo（null）; 
 frame.setVisible（true）; 
} 
}）; 
} 
 
公共类TestPane扩展JPanel {
 
 public TestPane（）{
 setLayout（new BorderLayout（））; 
 DataTableModel model = new DataTableModel（）; 
 model.add（new Data（Hello，true））; 
 model.add（new Data（Goodbye，false））; 
 model.add（新数据（你想玩游戏吗？，真））; 
 model.add（新数据（Yesturday，false））; 
 model.add（新数据（明天，真实））; 
 model.add（new Data（Java，false））; 
 model.add（new Data（Swift，false））; 
 model.add（新数据（直升机，真））; 
 
 JTable table = new JTable（model）; 
 
 add（new JScrollPane（table））; 
} 
 
} 
 
公共类DataTableModel扩展AbstractTableModel {
 
 private List< Data> rows = new ArrayList<>（25）; 
 
 public void add（数据数据）{
 int rowCount = getRowCount（）; 
 rows.add（data）; 
 fireTableRowsInserted（rowCount，rowCount）; 
} 
 
 @Override 
 public String getColumnName（int column）{
 switch（column）{
 case 0：return; 
案例1：返回选项; 
} 
返回null; 
} 
 
 @Override 
 public int getRowCount（）{
 return rows.size（）; 
} 
 
 @Override 
 public int getColumnCount（）{
 return 2; 
} 
 
 @Override 
 public Class<？> getColumnClass（int columnIndex）{
 switch（columnIndex）{
 case 0：return Boolean.class; 
 case 1：return String.class; 
} 
返回Object.class; 
} 
 
 @Override 
 public Object getValueAt（int rowIndex，int columnIndex）{
 Data row = rows.get（rowIndex）; 
 switch（columnIndex）{
 case 0：return row.isSelected（）; 
 case 1：return row.getText（）; 
} 
返回null; 
} 
 
 
 
} 
 
} 
  

恕我直言，这是一个更好的解决方案，使用 JTable

I have been fiddling around with this for a while, and all the solutions and working examples I could find included check boxes rendered using the built-in Boolean TableCellRenderers, that is a cell could have only a check box. I didn't find any working example where there would be some text alongside that check box in that SAME cell, or more specifically a JCheckBox which allows a check box and a text.

解决方案

When your data/requirements doesn't fit within the default available functionality, you need to look towards providing a customised solution

I'd recommend you start by having a look at Using custom renderers

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.EventQueue;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;

public class Test {

    public static void main(String[] args) {
        new Test();
    }

    public class Data {
        private String text;
        private boolean selected;

        public Data(String text, boolean selected) {
            this.text = text;
            this.selected = selected;
        }

        public String getText() {
            return text;
        }

        public void setText(String text) {
            this.text = text;
        }

        public boolean isSelected() {
            return selected;
        }

        public void setSelected(boolean state) {
            this.selected = state;
        }

    }

    public Test() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                    ex.printStackTrace();
                }

                JFrame frame = new JFrame("Testing");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.add(new TestPane());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

    public class TestPane extends JPanel {

        public TestPane() {
            setLayout(new BorderLayout());
            DefaultTableModel model = new DefaultTableModel(new String[] {"Something"}, 0) {
                @Override
                public Class<?> getColumnClass(int columnIndex) {
                    return Data.class;
                }
            };
            model.addRow(new Object[]{new Data("Hello", true)});
            model.addRow(new Object[]{new Data("Goodbye", false)});
            model.addRow(new Object[]{new Data("Do you want to play a game?", true)});
            model.addRow(new Object[]{new Data("Yesturday", false)});
            model.addRow(new Object[]{new Data("Tomorrow", true)});
            model.addRow(new Object[]{new Data("Java", false)});
            model.addRow(new Object[]{new Data("Swift", false)});
            model.addRow(new Object[]{new Data("Helicopter", true)});


            JTable table = new JTable(model);
            table.setDefaultRenderer(Data.class, new DataTableCellRenderer());

            add(new JScrollPane(table));
        }

    }

    public class DataTableCellRenderer extends JCheckBox implements TableCellRenderer {

        @Override
        public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
            if (isSelected) {
                setBackground(table.getSelectionBackground());
                setForeground(table.getSelectionForeground());
            } else {
                setBackground(table.getBackground());
                setForeground(table.getForeground());
            }

            if (value instanceof Data) {
                Data data = (Data)value;
                setText(data.getText());
                setSelected(data.isSelected());
            }

            return this;
        }

    }

}

At this point, I'm left wondering if JTable is the best solution and if JList might be better

Of course, another option, which might work better with JTable, would be to devise a custom TableModel which could break down the data into separate columns...

import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableModel;

public class Test {

    public static void main(String[] args) {
        new Test();
    }

    public class Data {

        private String text;
        private boolean selected;

        public Data(String text, boolean selected) {
            this.text = text;
            this.selected = selected;
        }

        public String getText() {
            return text;
        }

        public void setText(String text) {
            this.text = text;
        }

        public boolean isSelected() {
            return selected;
        }

        public void setSelected(boolean state) {
            this.selected = state;
        }

    }

    public Test() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                    ex.printStackTrace();
                }

                JFrame frame = new JFrame("Testing");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.add(new TestPane());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

    public class TestPane extends JPanel {

        public TestPane() {
            setLayout(new BorderLayout());
            DataTableModel model = new DataTableModel();
            model.add(new Data("Hello", true));
            model.add(new Data("Goodbye", false));
            model.add(new Data("Do you want to play a game?", true));
            model.add(new Data("Yesturday", false));
            model.add(new Data("Tomorrow", true));
            model.add(new Data("Java", false));
            model.add(new Data("Swift", false));
            model.add(new Data("Helicopter", true));

            JTable table = new JTable(model);

            add(new JScrollPane(table));
        }

    }

    public class DataTableModel extends AbstractTableModel {

        private List<Data> rows = new ArrayList<>(25);

        public void add(Data data) {
            int rowCount = getRowCount();
            rows.add(data);
            fireTableRowsInserted(rowCount, rowCount);
        }

        @Override
        public String getColumnName(int column) {
            switch (column) {
                case 0: return "";
                case 1: return "Option";
            }
            return null;
        }

        @Override
        public int getRowCount() {
            return rows.size();
        }

        @Override
        public int getColumnCount() {
            return 2;
        }

        @Override
        public Class<?> getColumnClass(int columnIndex) {
            switch (columnIndex) {
                case 0: return Boolean.class;
                case 1: return String.class;
            }
            return Object.class;
        }

        @Override
        public Object getValueAt(int rowIndex, int columnIndex) {
            Data row = rows.get(rowIndex);
            switch (columnIndex) {
                case 0: return row.isSelected();
                case 1: return row.getText();
            }
            return null;
        }



    }

}

IMHO, this is a better solution for using JTable

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