问题：
如何在现有的JTable上添加一个表，其中一行由JComboboxes组成
祁驰
我试图在现有JTable的基础上添加一行JTable，该JTable通常是动态创建的，并且经常更改其数据模型。
如您所见，黄色区域仅代表一个行计数器，它是使用此源创建的
因此，使用以下代码将黄色列附加到主表:
JTable rowTable = new RowNumberTable(table);
scrollTable.setRowHeaderView(rowTable);
表列A、B、C等等，如果单击，将相应地对JTable进行排序，并且应该维护此功能（我不想将JCombobox放在表头中，除非有一种巧妙的方法来完成这两项工作）。
我的目标是创建一个具有一行的JTable（参见红色行），其列数与主JTable一样多
编辑
这里有SSCCE
我想把JComboxes放在A、B、C、D的顶部。。。。。
呈现jcombox的类是ColumnjcomboxTable，它在TableDemo中调用如下：
//Column JCombobox
JTable columnTable = new ColumnJComboBoxTable(table);
scrollTable.setColumnHeaderView(columnTable);
现在，它没有像我想要的那样工作（好吧，它根本没有工作）
顶部的按钮添加和删除列。因此，如果删除了一列，则相应的jcombox也必须删除。
代码
桌面演示
package com.table;
import javax.swing.*;
import javax.swing.table.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.AbstractAction;
public class TableDemo extends JFrame
{
private static final long serialVersionUID = 1L;
public TableDemo()
{
super("TableDemo");
Object[][] data =
{
{"0","1","2","3","4","5","6","7","8","9","10"},
{"0","1","2","3","4","5","6","7","8","9","10"},
{"0","1","2","3","4","5","6","7","8","9","10"},
{"0","1","2","3","4","5","6","7","8","9","10"},
{"0","1","2","3","4","5","6","7","8","9","10"},
{"0","1","2","3","4","5","6","7","8","9","10"},
{"0","1","2","3","4","5","6","7","8","9","10"},
{"0","1","2","3","4","5","6","7","8","9","10"},
{"0","1","2","3","4","5","6","7","8","9","10"},
{"0","1","2","3","4","5","6","7","8","9","10"},
{"0","1","2","3","4","5","6","7","8","9","10"},
{"0","1","2","3","4","5","6","7","8","9","10"},
{"0","1","2","3","4","5","6","7","8","9","10"},
{"0","1","2","3","4","5","6","7","8","9","10"},
};
String[] columnNames =
{
"A",
"B",
"C",
"D",
"E",
"F",
"G",
"H",
"I",
"J",
"K",
};
final JTable table = new JTable(data, columnNames);
new JPopupMenu();
final JToolBar toolBar = new JToolBar();
final XTableColumnModel columnModel = new XTableColumnModel();
table.setColumnModel(columnModel);
table.createDefaultColumnsFromModel();
toolBar.add(new JButton(new AbstractAction("ALL") {
/**
*
*/
private static final long serialVersionUID = 1L;
public void actionPerformed(ActionEvent e) {
columnModel.setAllColumnsVisible();
}
}));
toolBar.add(new JButton(new AbstractAction("Column 0") {
/**
*
*/
private static final long serialVersionUID = 1L;
public void actionPerformed(ActionEvent e) {
TableColumn column = columnModel.getColumnByModelIndex(0);
boolean visible = columnModel.isColumnVisible(column);
columnModel.setColumnVisible(column, !visible);
}
}));
toolBar.add(new JButton(new AbstractAction("Column 1") {
/**
*
*/
private static final long serialVersionUID = 1L;
public void actionPerformed(ActionEvent e) {
TableColumn column = columnModel.getColumnByModelIndex(1);
boolean visible = columnModel.isColumnVisible(column);
columnModel.setColumnVisible(column, !visible);
}
}));
toolBar.add(new JButton(new AbstractAction("Column 2") {
/**
*
*/
private static final long serialVersionUID = 1L;
public void actionPerformed(ActionEvent e) {
TableColumn column = columnModel.getColumnByModelIndex(2);
boolean visible = columnModel.isColumnVisible(column);
columnModel.setColumnVisible(column, !visible);
}
}));
toolBar.add(new JButton(new AbstractAction("Column 3") {
/**
*
*/
private static final long serialVersionUID = 1L;
public void actionPerformed(ActionEvent e) {
TableColumn column = columnModel.getColumnByModelIndex(3);
boolean visible = columnModel.isColumnVisible(column);
columnModel.setColumnVisible(column, !visible);
}
}));
toolBar.add(new JButton(new AbstractAction("Column 4") {
/**
*
*/
private static final long serialVersionUID = 1L;
public void actionPerformed(ActionEvent e) {
TableColumn column = columnModel.getColumnByModelIndex(4);
boolean visible = columnModel.isColumnVisible(column);
columnModel.setColumnVisible(column, !visible);
}
}));
toolBar.add(new JButton(new AbstractAction("Column 5") {
/**
*
*/
private static final long serialVersionUID = 1L;
public void actionPerformed(ActionEvent e) {
TableColumn column = columnModel.getColumnByModelIndex(5);
boolean visible = columnModel.isColumnVisible(column);
columnModel.setColumnVisible(column, !visible);
}
}));
toolBar.add(new JButton(new AbstractAction("Column 6") {
/**
*
*/
private static final long serialVersionUID = 1L;
public void actionPerformed(ActionEvent e) {
TableColumn column = columnModel.getColumnByModelIndex(6);
boolean visible = columnModel.isColumnVisible(column);
columnModel.setColumnVisible(column, !visible);
}
}));
toolBar.add(new JButton(new AbstractAction("Column 7") {
/**
*
*/
private static final long serialVersionUID = 1L;
public void actionPerformed(ActionEvent e) {
TableColumn column = columnModel.getColumnByModelIndex(7);
boolean visible = columnModel.isColumnVisible(column);
columnModel.setColumnVisible(column, !visible);
}
}));
toolBar.add(new JButton(new AbstractAction("Column 8") {
/**
*
*/
private static final long serialVersionUID = 1L;
public void actionPerformed(ActionEvent e) {
TableColumn column = columnModel.getColumnByModelIndex(8);
boolean visible = columnModel.isColumnVisible(column);
columnModel.setColumnVisible(column, !visible);
}
}));
toolBar.add(new JButton(new AbstractAction("Column 9") {
/**
*
*/
private static final long serialVersionUID = 1L;
public void actionPerformed(ActionEvent e) {
TableColumn column = columnModel.getColumnByModelIndex(9);
boolean visible = columnModel.isColumnVisible(column);
columnModel.setColumnVisible(column, !visible);
}
}));
toolBar.add(new JButton(new AbstractAction("Column 10") {
/**
*
*/
private static final long serialVersionUID = 1L;
public void actionPerformed(ActionEvent e) {
TableColumn column = columnModel.getColumnByModelIndex(10);
boolean visible = columnModel.isColumnVisible(column);
columnModel.setColumnVisible(column, !visible);
}
}));
//Row number
table.setFillsViewportHeight(true);
JScrollPane scrollTable = new JScrollPane(table,
JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
scrollTable.setViewportView(table);
JTable rowTable = new RowNumberTable(table);
scrollTable.setRowHeaderView(rowTable);
scrollTable.setCorner(JScrollPane.UPPER_LEFT_CORNER, rowTable.getTableHeader());
//Column JCombobox
JTable columnTable = new ColumnJComboBoxTable(table);
scrollTable.setColumnHeaderView(columnTable);
getContentPane().add(toolBar, BorderLayout.NORTH);
getContentPane().add(scrollTable, BorderLayout.CENTER);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
}
public static void main(String[] args)
{
TableDemo frame = new TableDemo();
frame.pack();
frame.repaint();
frame.setVisible(true);
}
}
XTableColumnModel
桌子模型是在这里借用的
package com.table;
import javax.swing.table.*;
import java.util.Vector;
import java.util.Enumeration;
public class XTableColumnModel extends DefaultTableColumnModel {
private static final long serialVersionUID = 1L;
protected Vector allTableColumns = new Vector();
XTableColumnModel() {
}
public void setColumnVisible(TableColumn column, boolean visible) {
if(!visible) {
super.removeColumn(column);
}
else
{
int noVisibleColumns = tableColumns.size();
int noInvisibleColumns = allTableColumns.size();
int visibleIndex = 0;
for(int invisibleIndex = 0; invisibleIndex < noInvisibleColumns; ++invisibleIndex) {
TableColumn visibleColumn = (visibleIndex < noVisibleColumns ? (TableColumn)tableColumns.get(visibleIndex) : null);
TableColumn testColumn = (TableColumn)allTableColumns.get(invisibleIndex);
if(testColumn == column) {
if(visibleColumn != column) {
super.addColumn(column);
super.moveColumn(tableColumns.size() - 1, visibleIndex);
}
return;
}
if(testColumn == visibleColumn) {
++visibleIndex;
}
}
}
}
public void setAllColumnsVisible() {
int noColumns = allTableColumns.size();
for(int columnIndex = 0; columnIndex < noColumns; ++columnIndex) {
TableColumn visibleColumn = (columnIndex < tableColumns.size() ? (TableColumn)tableColumns.get(columnIndex) : null);
TableColumn invisibleColumn = (TableColumn)allTableColumns.get(columnIndex);
if(visibleColumn != invisibleColumn) {
super.addColumn(invisibleColumn);
super.moveColumn(tableColumns.size() - 1, columnIndex);
}
}
}
public TableColumn getColumnByModelIndex(int modelColumnIndex) {
for (int columnIndex = 0; columnIndex < allTableColumns.size(); ++columnIndex) {
TableColumn column = (TableColumn)allTableColumns.elementAt(columnIndex);
if(column.getModelIndex() == modelColumnIndex) {
return column;
}
}
return null;
}
public boolean isColumnVisible(TableColumn aColumn) {
return (tableColumns.indexOf(aColumn) >= 0);
}
public void addColumn(TableColumn column) {
allTableColumns.addElement(column);
super.addColumn(column);
}
public void removeColumn(TableColumn column) {
int allColumnsIndex = allTableColumns.indexOf(column);
if(allColumnsIndex != -1) {
allTableColumns.removeElementAt(allColumnsIndex);
}
super.removeColumn(column);
}
public void moveColumn(int oldIndex, int newIndex) {
if ((oldIndex < 0) || (oldIndex >= getColumnCount()) ||
(newIndex < 0) || (newIndex >= getColumnCount()))
throw new IllegalArgumentException("moveColumn() - Index out of range");
TableColumn fromColumn = (TableColumn) tableColumns.get(oldIndex);
TableColumn toColumn = (TableColumn) tableColumns.get(newIndex);
int allColumnsOldIndex = allTableColumns.indexOf(fromColumn);
int allColumnsNewIndex = allTableColumns.indexOf(toColumn);
if(oldIndex != newIndex) {
allTableColumns.removeElementAt(allColumnsOldIndex);
allTableColumns.insertElementAt(fromColumn, allColumnsNewIndex);
}
super.moveColumn(oldIndex, newIndex);
}
public int getColumnCount(boolean onlyVisible) {
Vector columns = (onlyVisible ? tableColumns : allTableColumns);
return columns.size();
}
public Enumeration getColumns(boolean onlyVisible) {
Vector columns = (onlyVisible ? tableColumns : allTableColumns);
return columns.elements();
}
public int getColumnIndex(Object identifier, boolean onlyVisible) {
if (identifier == null) {
throw new IllegalArgumentException("Identifier is null");
}
Vector columns = (onlyVisible ? tableColumns : allTableColumns);
int noColumns = columns.size();
TableColumn column;
for(int columnIndex = 0; columnIndex < noColumns; ++columnIndex) {
column = (TableColumn)columns.get(columnIndex);
if(identifier.equals(column.getIdentifier()))
return columnIndex;
}
throw new IllegalArgumentException("Identifier not found");
}
public TableColumn getColumn(int columnIndex, boolean onlyVisible) {
return (TableColumn)tableColumns.elementAt(columnIndex);
}
}
行数
package com.table;
import java.awt.*;
import java.beans.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
public class RowNumberTable extends JTable
implements ChangeListener, PropertyChangeListener, TableModelListener
{
private static final long serialVersionUID = -3837585325898676144L;
private JTable main;
public RowNumberTable(JTable table)
{
main = table;
main.addPropertyChangeListener( this );
main.getModel().addTableModelListener( this );
setFocusable( false );
setAutoCreateColumnsFromModel( false );
setSelectionModel( main.getSelectionModel() );
TableColumn column = new TableColumn();
column.setHeaderValue(" ");
addColumn( column );
column.setCellRenderer(new RowNumberRenderer());
getColumnModel().getColumn(0).setPreferredWidth(50);
setPreferredScrollableViewportSize(getPreferredSize());
}
@Override
public void addNotify()
{
super.addNotify();
Component c = getParent();
// Keep scrolling of the row table in sync with the main table.
if (c instanceof JViewport)
{
JViewport viewport = (JViewport)c;
viewport.addChangeListener( this );
}
}
@Override
public int getRowCount()
{
return main.getRowCount();
}
@Override
public int getRowHeight(int row)
{
int rowHeight = main.getRowHeight(row);
if (rowHeight != super.getRowHeight(row))
{
super.setRowHeight(row, rowHeight);
}
return rowHeight;
}
@Override
public Object getValueAt(int row, int column)
{
return Integer.toString(row + 1);
}
@Override
public boolean isCellEditable(int row, int column)
{
return false;
}
@Override
public void setValueAt(Object value, int row, int column) {}
public void stateChanged(ChangeEvent e)
{
// Keep the scrolling of the row table in sync with main table
JViewport viewport = (JViewport) e.getSource();
JScrollPane scrollPane = (JScrollPane)viewport.getParent();
scrollPane.getVerticalScrollBar().setValue(viewport.getViewPosition().y);
viewport.setBackground(Color.WHITE);
}
public void propertyChange(PropertyChangeEvent e)
{
// Keep the row table in sync with the main table
if ("selectionModel".equals(e.getPropertyName()))
{
setSelectionModel( main.getSelectionModel() );
}
if ("rowHeight".equals(e.getPropertyName()))
{
repaint();
}
if ("model".equals(e.getPropertyName()))
{
main.getModel().addTableModelListener( this );
revalidate();
}
}
@Override
public void tableChanged(TableModelEvent e)
{
revalidate();
}
/*
* Attempt to mimic the table header renderer
*/
private static class RowNumberRenderer extends DefaultTableCellRenderer
{
/**
*
*/
private static final long serialVersionUID = 6579115025835194953L;
public RowNumberRenderer()
{
setHorizontalAlignment(JLabel.CENTER);
}
public Component getTableCellRendererComponent(
JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column)
{
if (table != null)
{
JTableHeader header = table.getTableHeader();
if (header != null)
{
setForeground(header.getForeground());
setBackground(header.getBackground());
setFont(header.getFont());
}
}
if (isSelected)
{
setFont( getFont().deriveFont(Font.ITALIC) );
}
setText((value == null) ? "" : value.toString());
//setBorder(UIManager.getBorder("TableHeader.cellBorder"));
return this;
}
}
}
ColumnJComboBoxTable
package com.table;
import java.awt.*;
import java.beans.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
public class ColumnJComboBoxTable extends JTable implements ChangeListener,PropertyChangeListener, TableModelListener
{
private static final long serialVersionUID = -3837585325898676144L;
private JTable main;
public ColumnJComboBoxTable(JTable table)
{
main = table;
main.addPropertyChangeListener( this );
main.getModel().addTableModelListener( this );
setFocusable( false );
setAutoCreateColumnsFromModel( false );
setSelectionModel( main.getSelectionModel() );
for(int i =0; i<main.getModel().getColumnCount();i++)
{
TableColumn column = new TableColumn();
column.setHeaderValue(i);
addColumn( column );
getColumnModel().getColumn(i).setPreferredWidth(50);
column.setCellRenderer(new ColumnJComboBoxRenderer());
column.setHeaderRenderer(new ColumnJComboBoxRenderer());
}
setPreferredScrollableViewportSize(getPreferredSize());
}
@Override
public void addNotify()
{
super.addNotify();
Component c = getParent();
// Keep scrolling of the row table in sync with the main table.
if (c instanceof JViewport)
{
JViewport viewport = (JViewport)c;
viewport.addChangeListener( this );
}
}
@Override
public int getColumnCount()
{
return main.getColumnCount();
}
@Override
public int getRowHeight(int row)
{
int rowHeight = main.getRowHeight(row);
if (rowHeight != super.getRowHeight(row))
{
super.setRowHeight(row, rowHeight);
}
return rowHeight;
}
/*
* No model is being used for this table so just use the row number
* as the value of the cell.
*/
@Override
public Object getValueAt(int row, int column)
{
return Integer.toString(column + 1);
}
/*
* Don't edit data in the main TableModel by mistake
*/
@Override
public boolean isCellEditable(int row, int column)
{
return false;
}
/*
* Do nothing since the table ignores the model
*/
@Override
public void setValueAt(Object value, int row, int column) {}
//
// Implement the ChangeListener
//
public void stateChanged(ChangeEvent e)
{
// Keep the scrolling of the row table in sync with main table
JViewport viewport = (JViewport) e.getSource();
JScrollPane scrollPane = (JScrollPane)viewport.getParent();
scrollPane.getHorizontalScrollBar().setValue(viewport.getViewPosition().x);
}
//
// Implement the PropertyChangeListener
//
public void propertyChange(PropertyChangeEvent e)
{
// Keep the row table in sync with the main table
if ("selectionModel".equals(e.getPropertyName()))
{
setSelectionModel( main.getSelectionModel() );
}
if ("rowHeight".equals(e.getPropertyName()))
{
repaint();
}
if ("model".equals(e.getPropertyName()))
{
main.getModel().addTableModelListener( this );
revalidate();
}
}
//
// Implement the TableModelListener
//
@Override
public void tableChanged(TableModelEvent e)
{
revalidate();
}
/*
* Attempt to mimic the table header renderer
*/
private static class ColumnJComboBoxRenderer extends DefaultTableCellRenderer
{
/**
*
*/
private static final long serialVersionUID = 6579115025835194953L;
public ColumnJComboBoxRenderer()
{
setHorizontalAlignment(JLabel.HORIZONTAL);
}
public Component getTableCellRendererComponent(
JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column)
{
if (table != null)
{
JTableHeader header = table.getTableHeader();
if (header != null)
{
setForeground(header.getForeground());
setBackground(header.getBackground());
setFont(header.getFont());
}
}
if (isSelected)
{
setFont( getFont().deriveFont(Font.ITALIC) );
}
setText((value == null) ? "" : value.toString());
return this;
}
}
}
任何人的帮助都将不胜感激
谢谢
共有1个答案
沃弘图
感谢@mKorbel的帮助
这里是解决方案的代码
import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
public class TableFilterRow implements TableColumnModelListener
{
private JTable table;
private JPanel filterRow;
public TableFilterRow(JTable table,JPanel filterRow)
{
this.table = table;
this.filterRow=filterRow;
table.setPreferredScrollableViewportSize(table.getPreferredSize());
table.getColumnModel().addColumnModelListener(this);
table.columnMarginChanged(new ChangeEvent(table.getColumnModel()));
}
@Override
public void columnMarginChanged(ChangeEvent e)
{
TableColumnModel tcm = table.getColumnModel();
int columns = tcm.getColumnCount();
for (int i = 0; i < columns; i++)
{
JComboBox<?> comboBox = (JComboBox<?>) filterRow.getComponent(i);
Dimension d = comboBox.getPreferredSize();
d.width = tcm.getColumn(i).getWidth();
comboBox.setPreferredSize(d);
}
SwingUtilities.invokeLater(new Runnable()
{
@Override
public void run()
{
filterRow.revalidate();
}
});
}
@Override
public void columnMoved(TableColumnModelEvent e)
{
Component moved = filterRow.getComponent(e.getFromIndex());
filterRow.remove(e.getFromIndex());
filterRow.add(moved, e.getToIndex());
filterRow.validate();
}
@Override
public void columnAdded(TableColumnModelEvent e)
{
}
@Override
public void columnRemoved(TableColumnModelEvent e)
{
}
@Override
public void columnSelectionChanged(ListSelectionEvent e)
{
}
public static void main(String[] args)
{
JFrame frame = new JFrame();
frame.setLayout(new BorderLayout());
JTable table = new JTable(3, 5);
table.setPreferredScrollableViewportSize(table.getPreferredSize());
table.columnMarginChanged(new ChangeEvent(table.getColumnModel()));
ComboFields[] comboFields = ComboFields.values();
JScrollPane scrollPane = new JScrollPane(table);
frame.add(scrollPane, BorderLayout.CENTER);
JPanel filterRow = new JPanel();
filterRow.setLayout(new FlowLayout(FlowLayout.CENTER, 0, 0));
for (int i = 0; i < table.getColumnCount(); i++)
{
filterRow.add(new JComboBox<ComboFields>(comboFields));
}
new TableFilterRow(table, filterRow);
frame.add(filterRow, BorderLayout.NORTH);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
private enum ComboFields{
VALUE_0(0),
VALUE_1(1),
VALUE_2(2),
VALUE_3(3),
VALUE_4(4),
VALUE_5(5);
// Internal state
private int fieldNumber;
private ComboFields(final int fieldNumber)
{
this.setFieldNumber(fieldNumber);
}
@SuppressWarnings("unused")
public int getFieldNumber() {
return fieldNumber;
}
public void setFieldNumber(int fieldNumber)
{
this.fieldNumber = fieldNumber;
}
}
}
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