multiple Row Header Example
// Example from http://www.crionics.com/products/opensource/faq/swing_ex/SwingExamples.html
/* (swing1.1) (swing#1356,#1454) */
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.Enumeration;
import java.util.Vector;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JViewport;
import javax.swing.ListSelectionModel;
import javax.swing.UIManager;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.TableModelEvent;
import javax.swing.plaf.basic.BasicTableUI;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import javax.swing.table.TableModel;
/* ----------------------------------------------
* | SNo. |
* ----------------------------------------------
* | | 1 |
* | Name |-----------------------------------
* | | 2 |
* ----------------------------------------------
* | | 1 |
* | |-----------------------------------
* | Language | 2 |
* | |-----------------------------------
* | | 3 |
* ----------------------------------------------
*/
/**
* @version 1.0 03/06/99
*/
public class MultipleRowHeaderExample extends JFrame {
Object[][] data;
Object[] column;
JTable table;
MultiSpanCellTable fixedTable;
public MultipleRowHeaderExample() {
super("Multiple Row Header Example");
setSize(400, 150);
data = new Object[][] { { "SNo.", "" }, { "Name", "1" }, { "", "2" },
{ "Language", "1" }, { "", "2" }, { "", "3" } };
column = new Object[] { "", "" };
AttributiveCellTableModel fixedModel = new AttributiveCellTableModel(
data, column) {
public boolean CellEditable(int row, int col) {
return false;
}
};
CellSpan cellAtt = (CellSpan) fixedModel.getCellAttribute();
cellAtt.combine(new int[] { 0 }, new int[] { 0, 1 });
cellAtt.combine(new int[] { 1, 2 }, new int[] { 0 });
cellAtt.combine(new int[] { 3, 4, 5 }, new int[] { 0 });
DefaultTableModel model = new DefaultTableModel(data.length, 3);
fixedTable = new MultiSpanCellTable(fixedModel);
table = new JTable(model);
fixedTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
fixedTable.setDefaultRenderer(Object.class, new RowHeaderRenderer(
fixedTable));
fixedTable.setGridColor(table.getTableHeader().getBackground());
JScrollPane scroll = new JScrollPane(table);
JViewport viewport = new JViewport();
viewport.setView(fixedTable);
viewport.setPreferredSize(fixedTable.getPreferredSize());
scroll.setRowHeaderView(viewport);
getContentPane().add(scroll, BorderLayout.CENTER);
}
public static void main(String[] args) {
MultipleRowHeaderExample frame = new MultipleRowHeaderExample();
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
frame.setVisible(true);
}
class RowHeaderRenderer extends JLabel implements TableCellRenderer {
RowHeaderRenderer(JTable table) {
JTableHeader header = table.getTableHeader();
setOpaque(true);
setBorder(UIManager.getBorder("TableHeader.cellBorder"));
setHorizontalAlignment(CENTER);
setForeground(header.getForeground());
setBackground(header.getBackground());
setFont(header.getFont());
}
public Component getTableCellRendererComponent(JTable table,
Object value, boolean isSelected, boolean hasFocus, int row,
int column) {
setText((value == null) ? "" : value.toString());
return this;
}
}
}
class AttributiveCellTableModel extends DefaultTableModel {
protected CellAttribute cellAtt;
public AttributiveCellTableModel() {
this((Vector) null, 0);
}
public AttributiveCellTableModel(int numRows, int numColumns) {
Vector names = new Vector(numColumns);
names.setSize(numColumns);
setColumnIdentifiers(names);
dataVector = new Vector();
setNumRows(numRows);
cellAtt = new DefaultCellAttribute(numRows, numColumns);
}
public AttributiveCellTableModel(Vector columnNames, int numRows) {
setColumnIdentifiers(columnNames);
dataVector = new Vector();
setNumRows(numRows);
cellAtt = new DefaultCellAttribute(numRows, columnNames.size());
}
public AttributiveCellTableModel(Object[] columnNames, int numRows) {
this(convertToVector(columnNames), numRows);
}
public AttributiveCellTableModel(Vector data, Vector columnNames) {
setDataVector(data, columnNames);
}
public AttributiveCellTableModel(Object[][] data, Object[] columnNames) {
setDataVector(data, columnNames);
}
public void setDataVector(Vector newData, Vector columnNames) {
if (newData == null)
throw new IllegalArgumentException(
"setDataVector() - Null parameter");
dataVector = new Vector(0);
setColumnIdentifiers(columnNames);
dataVector = newData;
//
cellAtt = new DefaultCellAttribute(dataVector.size(), columnIdentifiers
.size());
newRowsAdded(new TableModelEvent(this, 0, getRowCount() - 1,
TableModelEvent.ALL_COLUMNS, TableModelEvent.INSERT));
}
public void addColumn(Object columnName, Vector columnData) {
if (columnName == null)
throw new IllegalArgumentException("addColumn() - null parameter");
columnIdentifiers.addElement(columnName);
int index = 0;
Enumeration enumeration = dataVector.elements();
while (enumeration.hasMoreElements()) {
Object value;
if ((columnData != null) && (index < columnData.size()))
value = columnData.elementAt(index);
else
value = null;
((Vector) enumeration.nextElement()).addElement(value);
index++;
}
//
cellAtt.addColumn();
fireTableStructureChanged();
}
public void addRow(Vector rowData) {
Vector newData = null;
if (rowData == null) {
newData = new Vector(getColumnCount());
} else {
rowData.setSize(getColumnCount());
}
dataVector.addElement(newData);
//
cellAtt.addRow();
newRowsAdded(new TableModelEvent(this, getRowCount() - 1,
getRowCount() - 1, TableModelEvent.ALL_COLUMNS,
TableModelEvent.INSERT));
}
public void insertRow(int row, Vector rowData) {
if (rowData == null) {
rowData = new Vector(getColumnCount());
} else {
rowData.setSize(getColumnCount());
}
dataVector.insertElementAt(rowData, row);
//
cellAtt.insertRow(row);
newRowsAdded(new TableModelEvent(this, row, row,
TableModelEvent.ALL_COLUMNS, TableModelEvent.INSERT));
}
public CellAttribute getCellAttribute() {
return cellAtt;
}
public void setCellAttribute(CellAttribute newCellAtt) {
int numColumns = getColumnCount();
int numRows = getRowCount();
if ((newCellAtt.getSize().width != numColumns)
|| (newCellAtt.getSize().height != numRows)) {
newCellAtt.setSize(new Dimension(numRows, numColumns));
}
cellAtt = newCellAtt;
fireTableDataChanged();
}
/*
* public void changeCellAttribute(int row, int column, Object command) {
* cellAtt.changeAttribute(row, column, command); }
*
* public void changeCellAttribute(int[] rows, int[] columns, Object
* command) { cellAtt.changeAttribute(rows, columns, command); }
*/
}
class DefaultCellAttribute
//implements CellAttribute ,CellSpan {
implements CellAttribute, CellSpan, ColoredCell, CellFont {
//
// !!!! CAUTION !!!!!
// these values must be synchronized to Table data
//
protected int rowSize;
protected int columnSize;
protected int[][][] span; // CellSpan
protected Color[][] foreground; // ColoredCell
protected Color[][] background; //
protected Font[][] font; // CellFont
public DefaultCellAttribute() {
this(1, 1);
}
public DefaultCellAttribute(int numRows, int numColumns) {
setSize(new Dimension(numColumns, numRows));
}
protected void initValue() {
for (int i = 0; i < span.length; i++) {
for (int j = 0; j < span[i].length; j++) {
span[i][j][CellSpan.COLUMN] = 1;
span[i][j][CellSpan.ROW] = 1;
}
}
}
//
// CellSpan
//
public int[] getSpan(int row, int column) {
if (isOutOfBounds(row, column)) {
int[] ret_code = { 1, 1 };
return ret_code;
}
return span[row][column];
}
public void setSpan(int[] span, int row, int column) {
if (isOutOfBounds(row, column))
return;
this.span[row][column] = span;
}
public boolean isVisible(int row, int column) {
if (isOutOfBounds(row, column))
return false;
if ((span[row][column][CellSpan.COLUMN] < 1)
|| (span[row][column][CellSpan.ROW] < 1))
return false;
return true;
}
public void combine(int[] rows, int[] columns) {
if (isOutOfBounds(rows, columns))
return;
int rowSpan = rows.length;
int columnSpan = columns.length;
int startRow = rows[0];
int startColumn = columns[0];
for (int i = 0; i < rowSpan; i++) {
for (int j = 0; j < columnSpan; j++) {
if ((span[startRow + i][startColumn + j][CellSpan.COLUMN] != 1)
|| (span[startRow + i][startColumn + j][CellSpan.ROW] != 1)) {
//System.out.println("can't combine");
return;
}
}
}
for (int i = 0, ii = 0; i < rowSpan; i++, ii--) {
for (int j = 0, jj = 0; j < columnSpan; j++, jj--) {
span[startRow + i][startColumn + j][CellSpan.COLUMN] = jj;
span[startRow + i][startColumn + j][CellSpan.ROW] = ii;
//System.out.println("r " +ii +" c " +jj);
}
}
span[startRow][startColumn][CellSpan.COLUMN] = columnSpan;
span[startRow][startColumn][CellSpan.ROW] = rowSpan;
}
public void split(int row, int column) {
if (isOutOfBounds(row, column))
return;
int columnSpan = span[row][column][CellSpan.COLUMN];
int rowSpan = span[row][column][CellSpan.ROW];
for (int i = 0; i < rowSpan; i++) {
for (int j = 0; j < columnSpan; j++) {
span[row + i][column + j][CellSpan.COLUMN] = 1;
span[row + i][column + j][CellSpan.ROW] = 1;
}
}
}
//
// ColoredCell
//
public Color getForeground(int row, int column) {
if (isOutOfBounds(row, column))
return null;
return foreground[row][column];
}
public void setForeground(Color color, int row, int column) {
if (isOutOfBounds(row, column))
return;
foreground[row][column] = color;
}
public void setForeground(Color color, int[] rows, int[] columns) {
if (isOutOfBounds(rows, columns))
return;
setValues(foreground, color, rows, columns);
}
public Color getBackground(int row, int column) {
if (isOutOfBounds(row, column))
return null;
return background[row][column];
}
public void setBackground(Color color, int row, int column) {
if (isOutOfBounds(row, column))
return;
background[row][column] = color;
}
public void setBackground(Color color, int[] rows, int[] columns) {
if (isOutOfBounds(rows, columns))
return;
setValues(background, color, rows, columns);
}
//
//
// CellFont
//
public Font getFont(int row, int column) {
if (isOutOfBounds(row, column))
return null;
return font[row][column];
}
public void setFont(Font font, int row, int column) {
if (isOutOfBounds(row, column))
return;
this.font[row][column] = font;
}
public void setFont(Font font, int[] rows, int[] columns) {
if (isOutOfBounds(rows, columns))
return;
setValues(this.font, font, rows, columns);
}
//
//
// CellAttribute
//
public void addColumn() {
int[][][] oldSpan = span;
int numRows = oldSpan.length;
int numColumns = oldSpan[0].length;
span = new int[numRows][numColumns + 1][2];
System.arraycopy(oldSpan, 0, span, 0, numRows);
for (int i = 0; i < numRows; i++) {
span[i][numColumns][CellSpan.COLUMN] = 1;
span[i][numColumns][CellSpan.ROW] = 1;
}
}
public void addRow() {
int[][][] oldSpan = span;
int numRows = oldSpan.length;
int numColumns = oldSpan[0].length;
span = new int[numRows + 1][numColumns][2];
System.arraycopy(oldSpan, 0, span, 0, numRows);
for (int i = 0; i < numColumns; i++) {
span[numRows][i][CellSpan.COLUMN] = 1;
span[numRows][i][CellSpan.ROW] = 1;
}
}
public void insertRow(int row) {
int[][][] oldSpan = span;
int numRows = oldSpan.length;
int numColumns = oldSpan[0].length;
span = new int[numRows + 1][numColumns][2];
if (0 < row) {
System.arraycopy(oldSpan, 0, span, 0, row - 1);
}
System.arraycopy(oldSpan, 0, span, row, numRows - row);
for (int i = 0; i < numColumns; i++) {
span[row][i][CellSpan.COLUMN] = 1;
span[row][i][CellSpan.ROW] = 1;
}
}
public Dimension getSize() {
return new Dimension(rowSize, columnSize);
}
public void setSize(Dimension size) {
columnSize = size.width;
rowSize = size.height;
span = new int[rowSize][columnSize][2]; // 2: COLUMN,ROW
foreground = new Color[rowSize][columnSize];
background = new Color[rowSize][columnSize];
font = new Font[rowSize][columnSize];
initValue();
}
/*
* public void changeAttribute(int row, int column, Object command) { }
*
* public void changeAttribute(int[] rows, int[] columns, Object command) { }
*/
protected boolean isOutOfBounds(int row, int column) {
if ((row < 0) || (rowSize <= row) || (column < 0)
|| (columnSize <= column)) {
return true;
}
return false;
}
protected boolean isOutOfBounds(int[] rows, int[] columns) {
for (int i = 0; i < rows.length; i++) {
if ((rows[i] < 0) || (rowSize <= rows[i]))
return true;
}
for (int i = 0; i < columns.length; i++) {
if ((columns[i] < 0) || (columnSize <= columns[i]))
return true;
}
return false;
}
protected void setValues(Object[][] target, Object value, int[] rows,
int[] columns) {
for (int i = 0; i < rows.length; i++) {
int row = rows[i];
for (int j = 0; j < columns.length; j++) {
int column = columns[j];
target[row][column] = value;
}
}
}
}
interface CellAttribute {
public void addColumn();
public void addRow();
public void insertRow(int row);
public Dimension getSize();
public void setSize(Dimension size);
}
interface ColoredCell {
public Color getForeground(int row, int column);
public void setForeground(Color color, int row, int column);
public void setForeground(Color color, int[] rows, int[] columns);
public Color getBackground(int row, int column);
public void setBackground(Color color, int row, int column);
public void setBackground(Color color, int[] rows, int[] columns);
}
interface CellFont {
public Font getFont(int row, int column);
public void setFont(Font font, int row, int column);
public void setFont(Font font, int[] rows, int[] columns);
}
interface CellSpan {
public final int ROW = 0;
public final int COLUMN = 1;
public int[] getSpan(int row, int column);
public void setSpan(int[] span, int row, int column);
public boolean isVisible(int row, int column);
public void combine(int[] rows, int[] columns);
public void split(int row, int column);
}
class MultiSpanCellTable extends JTable {
public MultiSpanCellTable(TableModel model) {
super(model);
setUI(new MultiSpanCellTableUI());
getTableHeader().setReorderingAllowed(false);
setCellSelectionEnabled(true);
setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
}
public Rectangle getCellRect(int row, int column, boolean includeSpacing) {
Rectangle sRect = super.getCellRect(row, column, includeSpacing);
if ((row < 0) || (column < 0) || (getRowCount() <= row)
|| (getColumnCount() <= column)) {
return sRect;
}
CellSpan cellAtt = (CellSpan) ((AttributiveCellTableModel) getModel())
.getCellAttribute();
if (!cellAtt.isVisible(row, column)) {
int temp_row = row;
int temp_column = column;
row += cellAtt.getSpan(temp_row, temp_column)[CellSpan.ROW];
column += cellAtt.getSpan(temp_row, temp_column)[CellSpan.COLUMN];
}
int[] n = cellAtt.getSpan(row, column);
int index = 0;
int columnMargin = getColumnModel().getColumnMargin();
Rectangle cellFrame = new Rectangle();
int aCellHeight = rowHeight + rowMargin;
cellFrame.y = row * aCellHeight;
cellFrame.height = n[CellSpan.ROW] * aCellHeight;
Enumeration enumeration = getColumnModel().getColumns();
while (enumeration.hasMoreElements()) {
TableColumn aColumn = (TableColumn) enumeration.nextElement();
cellFrame.width = aColumn.getWidth() + columnMargin;
if (index == column)
break;
cellFrame.x += cellFrame.width;
index++;
}
for (int i = 0; i < n[CellSpan.COLUMN] - 1; i++) {
TableColumn aColumn = (TableColumn) enumeration.nextElement();
cellFrame.width += aColumn.getWidth() + columnMargin;
}
if (!includeSpacing) {
Dimension spacing = getIntercellSpacing();
cellFrame.setBounds(cellFrame.x + spacing.width / 2, cellFrame.y
+ spacing.height / 2, cellFrame.width - spacing.width,
cellFrame.height - spacing.height);
}
return cellFrame;
}
private int[] rowColumnAtPoint(Point point) {
int[] retValue = { -1, -1 };
int row = point.y / (rowHeight + rowMargin);
if ((row < 0) || (getRowCount() <= row))
return retValue;
int column = getColumnModel().getColumnIndexAtX(point.x);
CellSpan cellAtt = (CellSpan) ((AttributiveCellTableModel) getModel())
.getCellAttribute();
if (cellAtt.isVisible(row, column)) {
retValue[CellSpan.COLUMN] = column;
retValue[CellSpan.ROW] = row;
return retValue;
}
retValue[CellSpan.COLUMN] = column
+ cellAtt.getSpan(row, column)[CellSpan.COLUMN];
retValue[CellSpan.ROW] = row
+ cellAtt.getSpan(row, column)[CellSpan.ROW];
return retValue;
}
public int rowAtPoint(Point point) {
return rowColumnAtPoint(point)[CellSpan.ROW];
}
public int columnAtPoint(Point point) {
return rowColumnAtPoint(point)[CellSpan.COLUMN];
}
public void columnSelectionChanged(ListSelectionEvent e) {
repaint();
}
public void valueChanged(ListSelectionEvent e) {
int firstIndex = e.getFirstIndex();
int lastIndex = e.getLastIndex();
if (firstIndex == -1 && lastIndex == -1) { // Selection cleared.
repaint();
}
Rectangle dirtyRegion = getCellRect(firstIndex, 0, false);
int numCoumns = getColumnCount();
int index = firstIndex;
for (int i = 0; i < numCoumns; i++) {
dirtyRegion.add(getCellRect(index, i, false));
}
index = lastIndex;
for (int i = 0; i < numCoumns; i++) {
dirtyRegion.add(getCellRect(index, i, false));
}
repaint(dirtyRegion.x, dirtyRegion.y, dirtyRegion.width,
dirtyRegion.height);
}
}
class MultiSpanCellTableUI extends BasicTableUI {
public void paint(Graphics g, JComponent c) {
Rectangle oldClipBounds = g.getClipBounds();
Rectangle clipBounds = new Rectangle(oldClipBounds);
int tableWidth = table.getColumnModel().getTotalColumnWidth();
clipBounds.width = Math.min(clipBounds.width, tableWidth);
g.setClip(clipBounds);
int firstIndex = table.rowAtPoint(new Point(0, clipBounds.y));
int lastIndex = table.getRowCount() - 1;
Rectangle rowRect = new Rectangle(0, 0, tableWidth, table
.getRowHeight()
+ table.getRowMargin());
rowRect.y = firstIndex * rowRect.height;
for (int index = firstIndex; index <= lastIndex; index++) {
if (rowRect.intersects(clipBounds)) {
//System.out.println(); // debug
//System.out.print("" + index +": "); // row
paintRow(g, index);
}
rowRect.y += rowRect.height;
}
g.setClip(oldClipBounds);
}
private void paintRow(Graphics g, int row) {
Rectangle rect = g.getClipBounds();
boolean drawn = false;
AttributiveCellTableModel tableModel = (AttributiveCellTableModel) table
.getModel();
CellSpan cellAtt = (CellSpan) tableModel.getCellAttribute();
int numColumns = table.getColumnCount();
for (int column = 0; column < numColumns; column++) {
Rectangle cellRect = table.getCellRect(row, column, true);
int cellRow, cellColumn;
if (cellAtt.isVisible(row, column)) {
cellRow = row;
cellColumn = column;
// System.out.print(" "+column+" "); // debug
} else {
cellRow = row + cellAtt.getSpan(row, column)[CellSpan.ROW];
cellColumn = column
+ cellAtt.getSpan(row, column)[CellSpan.COLUMN];
// System.out.print(" ("+column+")"); // debug
}
if (cellRect.intersects(rect)) {
drawn = true;
paintCell(g, cellRect, cellRow, cellColumn);
} else {
if (drawn)
break;
}
}
}
private void paintCell(Graphics g, Rectangle cellRect, int row, int column) {
int spacingHeight = table.getRowMargin();
int spacingWidth = table.getColumnModel().getColumnMargin();
Color c = g.getColor();
g.setColor(table.getGridColor());
g.drawRect(cellRect.x, cellRect.y, cellRect.width - 1,
cellRect.height - 1);
g.setColor(c);
cellRect.setBounds(cellRect.x + spacingWidth / 2, cellRect.y
+ spacingHeight / 2, cellRect.width - spacingWidth,
cellRect.height - spacingHeight);
if (table.isEditing() && table.getEditingRow() == row
&& table.getEditingColumn() == column) {
Component component = table.getEditorComponent();
component.setBounds(cellRect);
component.validate();
} else {
TableCellRenderer renderer = table.getCellRenderer(row, column);
Component component = table.prepareRenderer(renderer, row, column);
if (component.getParent() == null) {
rendererPane.add(component);
}
rendererPane.paintComponent(g, component, table, cellRect.x,
cellRect.y, cellRect.width, cellRect.height, true);
}
}
}
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