Java 使用J2s[Auto complete ComboBox]的JTable自动完成功能不工作

参考一下这本书！由abg和mKorBel回答

使用J2s

当我对ArrayList项使用Item类而不是String时，mKorBel为我的案例提供的答案中的代码不起作用

   Vector<Vector<String>> comboData=util.GetComboData();
   ArrayList<String> listSomeString =      util.GetListForComboBox(comboData);
   Java2sAutoComboBox comboBox = new Java2sAutoComboBox(listSomeString);
   comboBox.setDataList(listSomeString);
   column.setCellEditor(new DefaultCellEditor(comboBox));

---

不知道，必须创建HashMap或MutableComboxModel，因为AutoComplete严格基于数组，所以必须更改构造函数

我对这个Bug的好奇（我无法模拟这个问题）也来自于这段代码（禁用

comboBox.setRenderer（newitemrender（））；

）

导入java.awt.BorderLayout；
导入javax.swing.DefaultCellEditor；
导入javax.swing.JFrame；
导入javax.swing.JPanel；
导入javax.swing.JScrollPane；
导入javax.swing.JTable；
导入javax.swing.table.AbstractTableModel；
导入javax.swing.table.DefaultTableCellRenderer；
导入javax.swing.table.TableCellRenderer；
导入javax.swing.table.TableColumn；
导入java.awt.Component；
导入java.awt.event.ActionEvent；
导入java.awt.event.ActionListener；
导入java.util.ArrayList；
导入javax.swing.JButton；
导入javax.swing.JComboBox；
导入javax.swing.JList；
导入javax.swing.plaf.basic.BasicComboxRenderer；
公共类TableRenderDemo扩展了JPanel{
私有静态最终长serialVersionUID=1L；
公共TableRenderDemo（）{
超级（新边界布局（5,5））；
最终JTable表=新JTable（新MyTableModel（））；
table.setPreferredScrollableViewportSize（table.getPreferredSize（））；
表.setFillsViewPerthweight（真）；
表2.设置行高（20）；
JScrollPane scrollPane=新的JScrollPane（表）；
初始列大小（表）；
setUpSportColumn（table，table.getColumnModel（）.getColumn（2））；
添加（滚动窗格，BorderLayout.CENTER）；
JButton resetButton=新JButton（“重置为默认值”）；
resetButton.addActionListener（新ActionListener（）{
已执行的公共无效操作（操作事件e）{
对于（int i=0；i   public ArrayList GetListForComboBox(Vector<Vector<String>> comboData) {


    //Vector model = new Vector();

    ArrayList<Item_> listSomeString = new ArrayList<Item_>();        
    try {

    String strdata;
    for (int i = 0; i < comboData.size(); i++) {
    String id = comboData.get(i).elementAt(0).toString();

    if (comboData.get(i).elementAt(1) != null) {
        strdata = comboData.get(i).elementAt(1).toString();
    } else {
        strdata = "";
    }

    Item_ it = new Item_(id, strdata);
    //model.addElement(it);
    listSomeString.add(it);
    }

    } catch (Exception ex) {
    ex.printStackTrace();
    }


    return listSomeString;
    }

           public class Item_     
    {       

    private String description;   
    private String id; 
    public Item_( String id,String description)        
    {            

    this.description = description;    
    this.id = id;   
    }          
    public String getId()         
    {             return id;         
    }         

    public String getDescription()    
    {             return description;        
    }         
    public String toString()        
    {             return description;         
    } 

    public void setDescription(String desc)    
    {              description=desc;        
    } 

    }

import java.awt.BorderLayout;
import javax.swing.DefaultCellEditor;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JList;
import javax.swing.plaf.basic.BasicComboBoxRenderer;

public class TableRenderDemo extends JPanel {

    private static final long serialVersionUID = 1L;

    public TableRenderDemo() {
        super(new BorderLayout(5, 5));
        final JTable table = new JTable(new MyTableModel());
        table.setPreferredScrollableViewportSize(table.getPreferredSize());
        table.setFillsViewportHeight(true);
        table.setRowHeight(20);
        JScrollPane scrollPane = new JScrollPane(table);
        initColumnSizes(table);
        setUpSportColumn(table, table.getColumnModel().getColumn(2));
        add(scrollPane, BorderLayout.CENTER);
        JButton resetButton = new JButton("Reset to default");
        resetButton.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                for (int i = 0; i < table.getRowCount(); i++) {
                    table.getModel().setValueAt("None of the above", i, 2);
                }
            }
        });
        add(resetButton, BorderLayout.SOUTH);
    }

    private void initColumnSizes(JTable table) {
        MyTableModel model = (MyTableModel) table.getModel();
        TableColumn column = null;
        Component comp = null;
        int headerWidth = 0;
        int cellWidth = 0;
        Object[] longValues = model.longValues;
        TableCellRenderer headerRenderer = table.getTableHeader().getDefaultRenderer();
        for (int i = 0; i < 5; i++) {
            column = table.getColumnModel().getColumn(i);
            comp = headerRenderer.getTableCellRendererComponent(null, column.getHeaderValue(), false, false, 0, 0);
            headerWidth = comp.getPreferredSize().width;
            comp = table.getDefaultRenderer(model.getColumnClass(i)).getTableCellRendererComponent(table, longValues[i], false, false, 0, i);
            cellWidth = comp.getPreferredSize().width;
            column.setPreferredWidth(Math.max(headerWidth, cellWidth));
        }
    }

    private void setUpSportColumn(JTable table, TableColumn sportColumn) {
        ArrayList<String> listSomeString = new ArrayList<String>();
        listSomeString.add("Snowboarding");
        listSomeString.add("Rowing");
        listSomeString.add("Knitting");
        listSomeString.add("Speed reading");
        listSomeString.add("Pool");
        listSomeString.add("None of the above");
        JComboBox comboBox = new JComboBox();
        comboBox.addItem(new Item(1, "-"));
        comboBox.addItem(new Item(2, "Snowboarding"));
        comboBox.addItem(new Item(3, "Rowing"));
        comboBox.addItem(new Item(4, "Knitting"));
        comboBox.addItem(new Item(5, "Speed reading"));
        comboBox.addItem(new Item(6, "Pool"));
        comboBox.addItem(new Item(7, "None of the above"));
        comboBox.setMaximumRowCount(3);
        comboBox.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                JComboBox comboBox = (JComboBox) e.getSource();
                Item item = (Item) comboBox.getSelectedItem();
                System.out.println(item.getId() + " : " + item.getDescription());
            }
        });
        comboBox.setRenderer(new ItemRenderer());
        sportColumn.setCellEditor(new DefaultCellEditor(comboBox));
        DefaultTableCellRenderer renderer = new DefaultTableCellRenderer();
        renderer.setToolTipText("Click for combo box");
        sportColumn.setCellRenderer(renderer);
    }

    class ItemRenderer extends BasicComboBoxRenderer {

        @Override
        public Component getListCellRendererComponent(JList list, Object value,
                int index, boolean isSelected, boolean cellHasFocus) {
            super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
            if (value != null) {
                Item item = (Item) value;
                setText(item.getDescription().toUpperCase());
            }
            if (index == -1) {
                Item item = (Item) value;
                setText("" + item.getId());
            }
            return this;
        }
    }

    class Item {

        private int id;
        private String description;

        public Item(int id, String description) {
            this.id = id;
            this.description = description;
        }

        public int getId() {
            return id;
        }

        public String getDescription() {
            return description;
        }

        @Override
        public String toString() {
            return description;
        }
    }

    class MyTableModel extends AbstractTableModel {

        private static final long serialVersionUID = 1L;
        private String[] columnNames = {"First Name", "Last Name", "Sport", "# of Years", "Vegetarian"};
        private Object[][] data = {{"Kathy", "Smith", "Snowboarding", new Integer(5), false},
            {"John", "Doe", "Rowing", new Integer(3), true}, {"Sue", "Black", "Knitting", new Integer(2), false},
            {"Jane", "White", "Speed reading", new Integer(20), true}, {"Joe", "Brown", "Pool", new Integer(10), false}};
        public final Object[] longValues = {"Jane", "Kathy", "None of the above", new Integer(20), Boolean.TRUE};

        @Override
        public int getColumnCount() {
            return columnNames.length;
        }

        @Override
        public int getRowCount() {
            return data.length;
        }

        @Override
        public String getColumnName(int col) {
            return columnNames[col];
        }

        @Override
        public Object getValueAt(int row, int col) {
            return data[row][col];
        }

        @Override
        public Class<?> getColumnClass(int c) {
            return getValueAt(0, c).getClass();
        }

        @Override
        public boolean isCellEditable(int row, int col) {
            if (col < 2) {
                return false;
            } else {
                return true;
            }
        }

        @Override
        public void setValueAt(Object value, int row, int col) {
            data[row][col] = value;
            fireTableCellUpdated(row, col);
            System.out.println("New value of data: " + getValueAt(row, col));
        }
    }

    private static void createAndShowGUI() {
        JFrame frame = new JFrame("TableRenderDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        TableRenderDemo newContentPane = new TableRenderDemo();
        frame.setContentPane(newContentPane);
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {

            @Override
            public void run() {
                createAndShowGUI();
            }
        });
    }
}

import java.awt.BorderLayout;
import javax.swing.DefaultCellEditor;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import java.awt.Component;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.util.ArrayList;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFormattedTextField;
import javax.swing.JList;
import javax.swing.JTextField;
import javax.swing.plaf.basic.BasicComboBoxRenderer;
import javax.swing.text.JTextComponent;

public class TableRenderDemo extends JPanel {

    private static final long serialVersionUID = 1L;

    public TableRenderDemo() {
        super(new BorderLayout(5, 5));
        final JTable table = new JTable(new MyTableModel());
        table.setPreferredScrollableViewportSize(table.getPreferredSize());
        table.setFillsViewportHeight(true);
        JScrollPane scrollPane = new JScrollPane(table);
        initColumnSizes(table);
        setUpSportColumn(table, table.getColumnModel().getColumn(2));
        add(scrollPane, BorderLayout.CENTER);
        JButton resetButton = new JButton("Reset to default");
        resetButton.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                for (int i = 0; i < table.getRowCount(); i++) {
                    table.getModel().setValueAt("None of the above", i, 2);
                }
            }
        });
        add(resetButton, BorderLayout.SOUTH);
    }

    private void initColumnSizes(JTable table) {
        MyTableModel model = (MyTableModel) table.getModel();
        TableColumn column = null;
        Component comp = null;
        int headerWidth = 0;
        int cellWidth = 0;
        Object[] longValues = model.longValues;
        TableCellRenderer headerRenderer = table.getTableHeader().getDefaultRenderer();
        for (int i = 0; i < 5; i++) {
            column = table.getColumnModel().getColumn(i);
            comp = headerRenderer.getTableCellRendererComponent(null, column.getHeaderValue(), false, false, 0, 0);
            headerWidth = comp.getPreferredSize().width;
            comp = table.getDefaultRenderer(model.getColumnClass(i)).getTableCellRendererComponent(table, longValues[i], false, false, 0, i);
            cellWidth = comp.getPreferredSize().width;
            column.setPreferredWidth(Math.max(headerWidth, cellWidth));
        }
    }

    private void setUpSportColumn(JTable table, TableColumn sportColumn) {
        ArrayList<String> listSomeString = new ArrayList<String>();
        listSomeString.add("-");
        listSomeString.add("Snowboarding");
        listSomeString.add("Rowing");
        listSomeString.add("Knitting");
        listSomeString.add("Speed reading");
        listSomeString.add("Pool");
        listSomeString.add("None of the above");
        AutoComboBox comboBox = new AutoComboBox(listSomeString);
        comboBox.setDataList(listSomeString);
        comboBox.setMaximumRowCount(3);
        comboBox.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                JComboBox comboBox = (JComboBox) e.getSource();
                System.out.println(comboBox.getSelectedItem());
            }
        });
        JTextComponent editor = ((JTextField) comboBox.getEditor().getEditorComponent());
        editor.setCaretPosition(editor.getCaretPosition());
        editor.moveCaretPosition(0);
        editor.addFocusListener(focsListener);

        sportColumn.setCellEditor(new DefaultCellEditor(comboBox));
        DefaultTableCellRenderer renderer = new DefaultTableCellRenderer();
        renderer.setToolTipText("Click for combo box");
        sportColumn.setCellRenderer(renderer);
    }

    private FocusListener focsListener = new FocusListener() {

        @Override
        public void focusGained(FocusEvent e) {
            dumpInfo(e);
        }

        @Override
        public void focusLost(FocusEvent e) {
            //dumpInfo(e);
        }

        private void dumpInfo(FocusEvent e) {
            //System.out.println("Source  : " + name(e.getComponent()));
            //System.out.println("Opposite : " + name(e.getOppositeComponent()));
            //System.out.println("Temporary: " + e.isTemporary());
            final Component c = e.getComponent();
            if (c instanceof JFormattedTextField) {
                EventQueue.invokeLater(new Runnable() {

                    public void run() {
                        ((JFormattedTextField) c).requestFocus();
                        ((JFormattedTextField) c).setText(((JFormattedTextField) c).getText());
                        ((JFormattedTextField) c).selectAll();
                    }
                });
            } else if (c instanceof JTextField) {
                EventQueue.invokeLater(new Runnable() {

                    public void run() {
                        ((JTextField) c).requestFocus();
                        ((JTextField) c).setText(((JTextField) c).getText());
                        ((JTextField) c).selectAll();
                    }
                });
            }
        }

        private String name(Component c) {
            return (c == null) ? null : c.getName();
        }
    };

    class ItemRenderer extends BasicComboBoxRenderer {

        @Override
        public Component getListCellRendererComponent(JList list, Object value,
                int index, boolean isSelected, boolean cellHasFocus) {
            super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
            if (value != null) {
            }
            if (index == -1) {
            }
            return this;
        }
    }

    class MyTableModel extends AbstractTableModel {

        private static final long serialVersionUID = 1L;
        private String[] columnNames = {"First Name", "Last Name", "Sport", "# of Years", "Vegetarian"};
        private Object[][] data = {{"Kathy", "Smith", "Snowboarding", new Integer(5), false},
            {"John", "Doe", "Rowing", new Integer(3), true}, {"Sue", "Black", "Knitting", new Integer(2), false},
            {"Jane", "White", "Speed reading", new Integer(20), true}, {"Joe", "Brown", "Pool", new Integer(10), false}};
        public final Object[] longValues = {"Jane", "Kathy", "None of the above", new Integer(20), Boolean.TRUE};

        @Override
        public int getColumnCount() {
            return columnNames.length;
        }

        @Override
        public int getRowCount() {
            return data.length;
        }

        @Override
        public String getColumnName(int col) {
            return columnNames[col];
        }

        @Override
        public Object getValueAt(int row, int col) {
            return data[row][col];
        }

        @Override
        public Class<?> getColumnClass(int c) {
            return getValueAt(0, c).getClass();
        }

        @Override
        public boolean isCellEditable(int row, int col) {
            if (col < 2) {
                return false;
            } else {
                return true;
            }
        }

        @Override
        public void setValueAt(Object value, int row, int col) {
            data[row][col] = value;
            fireTableCellUpdated(row, col);
            System.out.println("New value of data: " + getValueAt(row, col));
        }
    }

    private static void createAndShowGUI() {
        JFrame frame = new JFrame("TableRenderDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        TableRenderDemo newContentPane = new TableRenderDemo();
        frame.setContentPane(newContentPane);
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {

            @Override
            public void run() {
                createAndShowGUI();
            }
        });
    }
}

void setSelectedValue(String str)
{
    if(!isFired)
    {
        Object objectToSelect = null;

        for(Object obj: getDataList())
        {
            if( obj.toString().equals(str) )
            {
                objectToSelect = obj;
                break;
            }
        }

        isFired = true;
        setSelectedItem(objectToSelect);
        fireItemStateChanged(new ItemEvent(this, 701, selectedItemReminder,
                                           1));
        isFired = false;
    }
}