java – JTable头中的多个可编辑行
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内容图文
我需要在JTable头中有多个可编辑的行,因此相同的头列可以包含JTextField和JButton.
我已经找到了如何实现可编辑的标题单元格以及如何拆分标题单元格.然而事实证明这些方法有些不同,我需要将它们融合为一体.
是否有任何可编辑的JTable标题行解决方案已经开发出来,因此我不需要重新发明自行车？
到目前为止我发现了什么：
可编辑标题行代码取自：
http://www.java2s.com/Code/Java/Swing-Components/EditableHeaderTableExample2.htm
码：
import java.awt.Component;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.EventObject;
import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.event.CellEditorListener;
import javax.swing.event.ChangeEvent;
import javax.swing.event.MouseInputListener;
import javax.swing.plaf.basic.BasicTableHeaderUI;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;
/**
* @version 1.0 08/22/99
*/
public class EditableHeaderTableExample2 extends JFrame {
public EditableHeaderTableExample2() {
super("EditableHeader Example");
JTable table = new JTable(7, 5);
TableColumnModel columnModel = table.getColumnModel();
table.setTableHeader(new EditableHeader(columnModel));
String[] items = { "Dog", "Cat" };
JComboBox combo = new JComboBox();
for (int i = 0; i < items.length; i++) {
combo.addItem(items[i]);
}
ComboRenderer renderer = new ComboRenderer(items);
EditableHeaderTableColumn col;
// column 1
col = (EditableHeaderTableColumn) table.getColumnModel().getColumn(1);
col.setHeaderValue(combo.getItemAt(0));
col.setHeaderRenderer(renderer);
col.setHeaderEditor(new DefaultCellEditor(combo));
// column 3
col = (EditableHeaderTableColumn) table.getColumnModel().getColumn(3);
col.setHeaderValue(combo.getItemAt(0));
//col.setHeaderRenderer(renderer);
col.setHeaderEditor(new DefaultCellEditor(combo));
JScrollPane pane = new JScrollPane(table);
getContentPane().add(pane);
}
class ComboRenderer extends JComboBox implements TableCellRenderer {
ComboRenderer(String[] items) {
for (int i = 0; i < items.length; i++) {
addItem(items[i]);
}
}
public Component getTableCellRendererComponent(JTable table,
Object value, boolean isSelected, boolean hasFocus, int row,
int column) {
setSelectedItem(value);
return this;
}
}
public static void main(String[] args) {
EditableHeaderTableExample2 frame = new EditableHeaderTableExample2();
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
frame.setSize(300, 100);
frame.setVisible(true);
}
}
class EditableHeader extends JTableHeader implements CellEditorListener {
public final int HEADER_ROW = -10;
transient protected int editingColumn;
transient protected TableCellEditor cellEditor;
transient protected Component editorComp;
public EditableHeader(TableColumnModel columnModel) {
super(columnModel);
setReorderingAllowed(false);
cellEditor = null;
recreateTableColumn(columnModel);
}
public void updateUI() {
setUI(new EditableHeaderUI());
resizeAndRepaint();
invalidate();
}
protected void recreateTableColumn(TableColumnModel columnModel) {
int n = columnModel.getColumnCount();
EditableHeaderTableColumn[] newCols = new EditableHeaderTableColumn[n];
TableColumn[] oldCols = new TableColumn[n];
for (int i = 0; i < n; i++) {
oldCols[i] = columnModel.getColumn(i);
newCols[i] = new EditableHeaderTableColumn();
newCols[i].copyValues(oldCols[i]);
}
for (int i = 0; i < n; i++) {
columnModel.removeColumn(oldCols[i]);
}
for (int i = 0; i < n; i++) {
columnModel.addColumn(newCols[i]);
}
}
public boolean editCellAt(int index) {
return editCellAt(index);
}
public boolean editCellAt(int index, EventObject e) {
if (cellEditor != null && !cellEditor.stopCellEditing()) {
return false;
}
if (!isCellEditable(index)) {
return false;
}
TableCellEditor editor = getCellEditor(index);
if (editor != null && editor.isCellEditable(e)) {
editorComp = prepareEditor(editor, index);
editorComp.setBounds(getHeaderRect(index));
add(editorComp);
editorComp.validate();
setCellEditor(editor);
setEditingColumn(index);
editor.addCellEditorListener(this);
return true;
}
return false;
}
public boolean isCellEditable(int index) {
if (getReorderingAllowed()) {
return false;
}
int columnIndex = columnModel.getColumn(index).getModelIndex();
EditableHeaderTableColumn col = (EditableHeaderTableColumn) columnModel
.getColumn(columnIndex);
return col.isHeaderEditable();
}
public TableCellEditor getCellEditor(int index) {
int columnIndex = columnModel.getColumn(index).getModelIndex();
EditableHeaderTableColumn col = (EditableHeaderTableColumn) columnModel
.getColumn(columnIndex);
return col.getHeaderEditor();
}
public void setCellEditor(TableCellEditor newEditor) {
TableCellEditor oldEditor = cellEditor;
cellEditor = newEditor;
// firePropertyChange
if (oldEditor != null && oldEditor instanceof TableCellEditor) {
((TableCellEditor) oldEditor)
.removeCellEditorListener((CellEditorListener) this);
}
if (newEditor != null && newEditor instanceof TableCellEditor) {
((TableCellEditor) newEditor)
.addCellEditorListener((CellEditorListener) this);
}
}
public Component prepareEditor(TableCellEditor editor, int index) {
Object value = columnModel.getColumn(index).getHeaderValue();
boolean isSelected = true;
int row = HEADER_ROW;
JTable table = getTable();
Component comp = editor.getTableCellEditorComponent(table, value,
isSelected, row, index);
if (comp instanceof JComponent) {
((JComponent) comp).setNextFocusableComponent(this);
}
return comp;
}
public TableCellEditor getCellEditor() {
return cellEditor;
}
public Component getEditorComponent() {
return editorComp;
}
public void setEditingColumn(int aColumn) {
editingColumn = aColumn;
}
public int getEditingColumn() {
return editingColumn;
}
public void removeEditor() {
TableCellEditor editor = getCellEditor();
if (editor != null) {
editor.removeCellEditorListener(this);
requestFocus();
remove(editorComp);
int index = getEditingColumn();
Rectangle cellRect = getHeaderRect(index);
setCellEditor(null);
setEditingColumn(-1);
editorComp = null;
repaint(cellRect);
}
}
public boolean isEditing() {
return (cellEditor == null) ? false : true;
}
//
// CellEditorListener
//
public void editingStopped(ChangeEvent e) {
TableCellEditor editor = getCellEditor();
if (editor != null) {
Object value = editor.getCellEditorValue();
int index = getEditingColumn();
columnModel.getColumn(index).setHeaderValue(value);
removeEditor();
}
}
public void editingCanceled(ChangeEvent e) {
removeEditor();
}
//
// public void setReorderingAllowed(boolean b) {
// reorderingAllowed = false;
// }
}
class EditableHeaderUI extends BasicTableHeaderUI {
protected MouseInputListener createMouseInputListener() {
return new MouseInputHandler((EditableHeader) header);
}
public class MouseInputHandler extends BasicTableHeaderUI.MouseInputHandler {
private Component dispatchComponent;
protected EditableHeader header;
public MouseInputHandler(EditableHeader header) {
this.header = header;
}
private void setDispatchComponent(MouseEvent e) {
Component editorComponent = header.getEditorComponent();
Point p = e.getPoint();
Point p2 = SwingUtilities.convertPoint(header, p, editorComponent);
dispatchComponent = SwingUtilities.getDeepestComponentAt(
editorComponent, p2.x, p2.y);
}
private boolean repostEvent(MouseEvent e) {
if (dispatchComponent == null) {
return false;
}
MouseEvent e2 = SwingUtilities.convertMouseEvent(header, e,
dispatchComponent);
dispatchComponent.dispatchEvent(e2);
return true;
}
public void mousePressed(MouseEvent e) {
if (!SwingUtilities.isLeftMouseButton(e)) {
return;
}
super.mousePressed(e);
if (header.getResizingColumn() == null) {
Point p = e.getPoint();
TableColumnModel columnModel = header.getColumnModel();
int index = columnModel.getColumnIndexAtX(p.x);
if (index != -1) {
if (header.editCellAt(index, e)) {
setDispatchComponent(e);
repostEvent(e);
}
}
}
}
public void mouseReleased(MouseEvent e) {
super.mouseReleased(e);
if (!SwingUtilities.isLeftMouseButton(e)) {
return;
}
repostEvent(e);
dispatchComponent = null;
}
}
}
class EditableHeaderTableColumn extends TableColumn {
protected TableCellEditor headerEditor;
protected boolean isHeaderEditable;
public EditableHeaderTableColumn() {
setHeaderEditor(createDefaultHeaderEditor());
isHeaderEditable = true;
}
public void setHeaderEditor(TableCellEditor headerEditor) {
this.headerEditor = headerEditor;
}
public TableCellEditor getHeaderEditor() {
return headerEditor;
}
public void setHeaderEditable(boolean isEditable) {
isHeaderEditable = isEditable;
}
public boolean isHeaderEditable() {
return isHeaderEditable;
}
public void copyValues(TableColumn base) {
modelIndex = base.getModelIndex();
identifier = base.getIdentifier();
width = base.getWidth();
minWidth = base.getMinWidth();
setPreferredWidth(base.getPreferredWidth());
maxWidth = base.getMaxWidth();
headerRenderer = base.getHeaderRenderer();
headerValue = base.getHeaderValue();
cellRenderer = base.getCellRenderer();
cellEditor = base.getCellEditor();
isResizable = base.getResizable();
}
protected TableCellEditor createDefaultHeaderEditor() {
return new DefaultCellEditor(new JTextField());
}
}
同一JTable头列代码中的多行(适用于java 7)
取自：
http://www.java2s.com/Code/Java/Swing-Components/GroupableGroupHeaderExample.htm
码：
列组类：
import java.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
/**
* ColumnGroup
*
* @version 1.0 10/20/98
* @author Nobuo Tamemasa
*/
class ColumnGroup {
protected TableCellRenderer renderer;
protected Vector v;
protected String text;
protected int margin=0;
public ColumnGroup(String text) {
this(null,text);
}
public ColumnGroup(TableCellRenderer renderer,String text) {
if (renderer == null) {
this.renderer = new DefaultTableCellRenderer() {
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
JTableHeader header = table.getTableHeader();
if (header != null) {
setForeground(header.getForeground());
setBackground(header.getBackground());
setFont(header.getFont());
}
setHorizontalAlignment(JLabel.CENTER);
setText((value == null) ? "" : value.toString());
setBorder(UIManager.getBorder("TableHeader.cellBorder"));
return this;
}
};
} else {
this.renderer = renderer;
}
this.text = text;
v = new Vector();
}
/**
* @param obj TableColumn or ColumnGroup
*/
public void add(Object obj) {
if (obj == null) { return; }
v.addElement(obj);
/*if(obj instanceof JTextField) {
this.setHeaderRenderer(renderer)
}*/
}
/**
* @param c TableColumn
* @param v ColumnGroups
*/
public Vector getColumnGroups(TableColumn c, Vector g) {
g.addElement(this);
if (v.contains(c)) return g;
Enumeration e = v.elements();
while (e.hasMoreElements()) {
Object obj = e.nextElement();
if (obj instanceof ColumnGroup) {
Vector groups =
(Vector)((ColumnGroup)obj).getColumnGroups(c,(Vector)g.clone());
if (groups != null) return groups;
}
}
return null;
}
public TableCellRenderer getHeaderRenderer() {
return renderer;
}
public void setHeaderRenderer(TableCellRenderer renderer) {
if (renderer != null) {
this.renderer = renderer;
}
}
public Object getHeaderValue() {
return text;
}
public Dimension getSize(JTable table) {
Component comp = renderer.getTableCellRendererComponent(
table, getHeaderValue(), false, false,-1, -1);
int height = comp.getPreferredSize().height;
int width = 0;
Enumeration e = v.elements();
while (e.hasMoreElements()) {
Object obj = e.nextElement();
if (obj instanceof TableColumn) {
TableColumn aColumn = (TableColumn)obj;
width += aColumn.getWidth();
//width += margin;
} else {
width += ((ColumnGroup)obj).getSize(table).width;
}
}
return new Dimension(width, height);
}
public void setColumnMargin(int margin) {
this.margin = margin;
Enumeration e = v.elements();
while (e.hasMoreElements()) {
Object obj = e.nextElement();
if (obj instanceof ColumnGroup) {
((ColumnGroup)obj).setColumnMargin(margin);
}
}
}
GroupableHeaderExample
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
/**
* @version 1.0 11/09/98
*/
public class GroupableHeaderExample extends JFrame {
GroupableHeaderExample() {
super( "Groupable Header Example" );
String[] petStrings = { "Bird", "Cat", "Dog", "Rabbit", "Pig" };
JComboBox petList = new JComboBox(petStrings);
DefaultTableModel dm = new DefaultTableModel();
dm.setDataVector(new Object[][]{
{"foo","ja"},
{"bar","en"}},
new Object[]{new JTextField(), petList});//"Input box","Combo Box"});
JTable table = new JTable( dm ) {
protected JTableHeader createDefaultTableHeader() {
return new GroupableTableHeader(columnModel);
}
};
TableColumnModel cm = table.getColumnModel();
ColumnGroup g_name = new ColumnGroup("Title1");
g_name.add(cm.getColumn(0));
//g_name.add(cm.getColumn(1));
ColumnGroup g_lang = new ColumnGroup("Title2");
g_lang.add(cm.getColumn(1));
/*ColumnGroup g_other = new ColumnGroup("Others");
g_other.add(cm.getColumn(4));
g_other.add(cm.getColumn(5));
g_lang.add(g_other);*/
GroupableTableHeader header = (GroupableTableHeader)table.getTableHeader();
header.addColumnGroup(g_name);
header.addColumnGroup(g_lang);
JScrollPane scroll = new JScrollPane( table );
getContentPane().add( scroll );
setSize( 400, 120 );
}
public static void main(String[] args) {
GroupableHeaderExample frame = new GroupableHeaderExample();
frame.addWindowListener( new WindowAdapter() {
public void windowClosing( WindowEvent e ) {
System.exit(0);
}
});
frame.setVisible(true);
}
}
GroupableTableHeader类
import java.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
/**
* GroupableTableHeader
*
* @version 1.0 10/20/98
* @author Nobuo Tamemasa
*/
public class GroupableTableHeader extends JTableHeader {
private static final String uiClassID = "GroupableTableHeaderUI";
protected Vector columnGroups = null;
public GroupableTableHeader(TableColumnModel model) {
super(model);
setUI(new GroupableTableHeaderUI());
setReorderingAllowed(false);
}
public void updateUI(){
setUI(new GroupableTableHeaderUI());
}
public void setReorderingAllowed(boolean b) {
reorderingAllowed = false;
}
public void addColumnGroup(ColumnGroup g) {
if (columnGroups == null) {
columnGroups = new Vector();
}
columnGroups.addElement(g);
}
public Enumeration getColumnGroups(TableColumn col) {
if (columnGroups == null) return null;
Enumeration e = columnGroups.elements();
while (e.hasMoreElements()) {
ColumnGroup cGroup = (ColumnGroup)e.nextElement();
Vector v_ret = (Vector)cGroup.getColumnGroups(col,new Vector());
if (v_ret != null) {
return v_ret.elements();
}
}
return null;
}
public void setColumnMargin() {
if (columnGroups == null) return;
int columnMargin = getColumnModel().getColumnMargin();
Enumeration e = columnGroups.elements();
while (e.hasMoreElements()) {
ColumnGroup cGroup = (ColumnGroup)e.nextElement();
cGroup.setColumnMargin(columnMargin);
}
}
}
GroupableTableHeaderUI类
import java.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.table.*;
import javax.swing.plaf.basic.*;
public class GroupableTableHeaderUI extends BasicTableHeaderUI {
public void paint(Graphics g, JComponent c) {
Rectangle clipBounds = g.getClipBounds();
if (header.getColumnModel() == null) return;
((GroupableTableHeader)header).setColumnMargin();
int column = 0;
Dimension size = header.getSize();
Rectangle cellRect = new Rectangle(0, 0, size.width, size.height);
Hashtable h = new Hashtable();
int columnMargin = header.getColumnModel().getColumnMargin();
Enumeration enumeration = header.getColumnModel().getColumns();
while (enumeration.hasMoreElements()) {
cellRect.height = size.height;
cellRect.y = 0;
TableColumn aColumn = (TableColumn)enumeration.nextElement();
Enumeration cGroups = ((GroupableTableHeader)header).getColumnGroups(aColumn);
if (cGroups != null) {
int groupHeight = 0;
while (cGroups.hasMoreElements()) {
ColumnGroup cGroup = (ColumnGroup)cGroups.nextElement();
Rectangle groupRect = (Rectangle)h.get(cGroup);
if (groupRect == null) {
groupRect = new Rectangle(cellRect);
Dimension d = cGroup.getSize(header.getTable());
groupRect.width = d.width;
groupRect.height = d.height;
h.put(cGroup, groupRect);
}
paintCell(g, groupRect, cGroup);
groupHeight += groupRect.height;
cellRect.height = size.height - groupHeight;
cellRect.y = groupHeight;
}
}
cellRect.width = aColumn.getWidth();// + columnMargin;
if (cellRect.intersects(clipBounds)) {
paintCell(g, cellRect, column);
}
cellRect.x += cellRect.width;
column++;
}
}
private void paintCell(Graphics g, Rectangle cellRect, int columnIndex) {
TableColumn aColumn = header.getColumnModel().getColumn(columnIndex);
TableCellRenderer renderer = aColumn.getHeaderRenderer();
//revised by Java2s.com
renderer = new DefaultTableCellRenderer(){
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
JLabel header = new JLabel();
header.setForeground(table.getTableHeader().getForeground());
header.setBackground(table.getTableHeader().getBackground());
header.setFont(table.getTableHeader().getFont());
header.setHorizontalAlignment(JLabel.CENTER);
header.setText(value.toString());
header.setBorder(UIManager.getBorder("TableHeader.cellBorder"));
return header;
}
};
Component c = renderer.getTableCellRendererComponent(
header.getTable(), aColumn.getHeaderValue(),false, false, -1, columnIndex);
c.setBackground(UIManager.getColor("control"));
rendererPane.add(c);
rendererPane.paintComponent(g, c, header, cellRect.x, cellRect.y,
cellRect.width, cellRect.height, true);
}
private void paintCell(Graphics g, Rectangle cellRect,ColumnGroup cGroup) {
TableCellRenderer renderer = cGroup.getHeaderRenderer();
//revised by Java2s.com
// if(renderer == null){
// return ;
// }
Component component = renderer.getTableCellRendererComponent(
header.getTable(), cGroup.getHeaderValue(),false, false, -1, -1);
rendererPane.add(component);
rendererPane.paintComponent(g, component, header, cellRect.x, cellRect.y,
cellRect.width, cellRect.height, true);
}
private int getHeaderHeight() {
int height = 0;
TableColumnModel columnModel = header.getColumnModel();
for(int column = 0; column < columnModel.getColumnCount(); column++) {
TableColumn aColumn = columnModel.getColumn(column);
TableCellRenderer renderer = aColumn.getHeaderRenderer();
//revised by Java2s.com
if(renderer == null){
return 40;
}
Component comp = renderer.getTableCellRendererComponent(
header.getTable(), aColumn.getHeaderValue(), false, false,-1, column);
int cHeight = comp.getPreferredSize().height;
Enumeration e = ((GroupableTableHeader)header).getColumnGroups(aColumn);
if (e != null) {
while (e.hasMoreElements()) {
ColumnGroup cGroup = (ColumnGroup)e.nextElement();
cHeight += cGroup.getSize(header.getTable()).height;
}
}
height = Math.max(height, cHeight);
}
return height;
}
private Dimension createHeaderSize(long width) {
TableColumnModel columnModel = header.getColumnModel();
width += columnModel.getColumnMargin() * columnModel.getColumnCount();
if (width > Integer.MAX_VALUE) {
width = Integer.MAX_VALUE;
}
return new Dimension((int)width, getHeaderHeight());
}
public Dimension getPreferredSize(JComponent c) {
long width = 0;
Enumeration enumeration = header.getColumnModel().getColumns();
while (enumeration.hasMoreElements()) {
TableColumn aColumn = (TableColumn)enumeration.nextElement();
width = width + aColumn.getPreferredWidth();
}
return createHeaderSize(width);
}
}
解决方法:
>只是想在JTableHeader中使用TableCellEditor是错误的,也不是multi_line_header,买Jide(支持)
>更简单,可以使用JTextField中的RowFilter,
>注意不要忘记convert indexes from view coordinates to model coordinates
.
.
import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
//code based on posts by @camickr
public class TableFilterRow implements TableColumnModelListener {
private static final long serialVersionUID = 1L;
private JFrame frame = new JFrame();
private JTable table = new JTable(3, 5);
private JScrollPane scrollPane = new JScrollPane(table);
// Panel for text fields
private JPanel filterRow = new JPanel(new FlowLayout(FlowLayout.CENTER, 0, 0));
public TableFilterRow() {
table.setPreferredScrollableViewportSize(table.getPreferredSize());
table.getColumnModel().addColumnModelListener(this);
filterRow = new JPanel(new FlowLayout(FlowLayout.CENTER, 0, 0));
for (int i = 0; i < table.getColumnCount(); i++) {
filterRow.add(new JTextField(" Sum at - " + i));
}
columnMarginChanged(new ChangeEvent(table.getColumnModel()));
frame.add(scrollPane);
frame.add(filterRow, BorderLayout.SOUTH);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
// Implement TableColumnModelListener methods
// (Note: instead of implementing a listener you should be able to
// override the columnMarginChanged and columMoved methods of JTable)
@Override
public void columnMarginChanged(ChangeEvent e) {
TableColumnModel tcm = table.getColumnModel();
int columns = tcm.getColumnCount();
for (int i = 0; i < columns; i++) {
JTextField textField = (JTextField) filterRow.getComponent(i);
Dimension d = textField.getPreferredSize();
d.width = tcm.getColumn(i).getWidth();
textField.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) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
TableFilterRow frame = new TableFilterRow();
}
});
}
}
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