Code
class ButtonHeaderRenderer extends JButton implements TableCellRenderer {
private int pushedColumn = -1;
private int rolloverColumn = -1;
@Override public void updateUI() {
super.updateUI();
setHorizontalTextPosition(LEFT);
}
@Override public Component getTableCellRendererComponent(
JTable table, Object value,
boolean isSelected, boolean hasFocus,
int row, int column) {
setText(Objects.toString(value, ""));
int modelColumn = table.convertColumnIndexToModel(column);
JTableHeader header = table.getTableHeader();
if (header != null) {
// setColor(header, hasFocus);
boolean isPressed = modelColumn == pressedColumn;
getModel().setPressed(isPressed);
getModel().setArmed(isPressed);
getModel().setRollover(modelColumn == rolloverColumn);
setFont(header.getFont());
}
Icon sortIcon = null;
if (table.getRowSorter() != null) {
List<? extends RowSorter.SortKey> sortKeys =
table.getRowSorter().getSortKeys();
if (!sortKeys.isEmpty() &&
sortKeys.get(0).getColumn() == modelColumn) {
SortOrder sortOrder = sortKeys.get(0).getSortOrder();
switch (sortOrder) {
case ASCENDING:
sortIcon = UIManager.getIcon("Table.ascendingSortIcon");
break;
case DESCENDING:
sortIcon = UIManager.getIcon("Table.descendingSortIcon");
break;
// case UNSORTED:
// sortIcon = UIManager.getIcon("Table.naturalSortIcon");
// break;
default:
sortIcon = UIManager.getIcon("Table.naturalSortIcon");
}
}
}
setIcon(sortIcon);
return this;
}
public void setPressedColumn(int column) {
pushedColumn = column;
}
public void setRolloverColumn(int column) {
rolloverColumn = column;
}
}
class HeaderMouseListener extends MouseAdapter {
@Override public void mousePressed(MouseEvent e) {
JTableHeader header = (JTableHeader) e.getComponent();
JTable table = header.getTable();
TableCellRenderer renderer = header.getDefaultRenderer();
int viewColumn = table.columnAtPoint(e.getPoint());
if (viewColumn >= 0 && renderer instanceof ButtonHeaderRenderer) {
int column = table.convertColumnIndexToModel(viewColumn);
((ButtonHeaderRenderer) renderer).setPressedColumn(column);
}
}
@Override public void mouseReleased(MouseEvent e) {
JTableHeader header = (JTableHeader) e.getComponent();
TableCellRenderer renderer = header.getDefaultRenderer();
if (renderer instanceof ButtonHeaderRenderer) {
((ButtonHeaderRenderer) renderer).setPressedColumn(-1);
}
}
@Override public void mouseMoved(MouseEvent e) {
JTableHeader header = (JTableHeader) e.getComponent();
JTable table = header.getTable();
TableCellRenderer renderer = header.getDefaultRenderer();
int viewColumn = table.columnAtPoint(e.getPoint());
if (viewColumn >= 0 && renderer instanceof ButtonHeaderRenderer) {
int column = table.convertColumnIndexToModel(viewColumn);
((ButtonHeaderRenderer) renderer).setRolloverColumn(column);
}
}
@Override public void mouseExited(MouseEvent e) {
JTableHeader header = (JTableHeader) e.getComponent();
TableCellRenderer renderer = header.getDefaultRenderer();
if (renderer instanceof ButtonHeaderRenderer) {
((ButtonHeaderRenderer) renderer).setRolloverColumn(-1);
}
}
}
References
