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| /**
* http://www.jroller.com/santhosh/entry/sorting_table_with_summary_row
* http://www.coderanch.com/t/415969/GUI/java/JTable-fixed-row
*/
import java.awt.Component;
import java.text.Collator;
import java.util.Comparator;
import javax.swing.DefaultRowSorter;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SortOrder;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableModel;
import javax.swing.table.TableRowSorter;
public class SummaryTableSorter<M extends TableModel> extends TableRowSorter<M> {
public SummaryTableSorter(M model) {
super(model);
}
// overridden to use SummaryModelWrapper
@Override
public void setModel(M model) {
super.setModel(model);
setModelWrapper(new SummaryModelWrapper<>(getModelWrapper()));
}
// overridden to use TableCellValueComparator always
@Override
protected boolean useToString(int column) {
return false;
}
// overridden to returns TableCellValueComparator
@Override
public Comparator<?> getComparator(int column) {
Comparator comparator = super.getComparator(column);
if (comparator instanceof Collator) {
comparator = null;
}
return new TableCellValueComparator(comparator);
}
class SummaryModelWrapper<M extends TableModel> extends DefaultRowSorter.ModelWrapper<M, Integer> {
private DefaultRowSorter.ModelWrapper<M, Integer> delegate;
public SummaryModelWrapper(DefaultRowSorter.ModelWrapper<M, Integer> delegate) {
this.delegate = delegate;
}
@Override
public M getModel() {
return delegate.getModel();
}
@Override
public int getColumnCount() {
return delegate.getColumnCount();
}
@Override
public int getRowCount() {
return delegate.getRowCount();
}
@Override
public String getStringValueAt(int row, int column) {
return delegate.getStringValueAt(row, column);
}
// returns TableCellValue instances always
@Override
public Object getValueAt(int row, int column) {
return new TableCellValue(row, column, delegate.getValueAt(row, column));
}
@Override
public Integer getIdentifier(int row) {
return delegate.getIdentifier(row);
}
}
class TableCellValue {
public int row;
public int column;
public Object value;
public TableCellValue(int row, int column, Object value) {
this.row = row;
this.column = column;
this.value = value;
}
}
class TableCellValueComparator implements Comparator<TableCellValue> {
private Comparator delegate;
public TableCellValueComparator(Comparator delegate) {
this.delegate = delegate;
}
@SuppressWarnings("unchecked")
@Override
public int compare(TableCellValue cell1, TableCellValue cell2) {
SortOrder order = SortOrder.ASCENDING;
for (SortKey sortKey : getSortKeys()) {
if (sortKey.getColumn() == cell1.column) {
order = sortKey.getSortOrder();
break;
}
}
int modifier = order == SortOrder.ASCENDING ? 1 : -1;
if (cell1.row == 0) {
return -modifier;
} else if (cell2.row == 0) {
return modifier;
} // }
else {
if (delegate != null) {
return delegate.compare(cell1.value, cell2.value);
} else {
String v1 = getModelWrapper().getStringValueAt(cell1.row, cell1.column);
String v2 = getModelWrapper().getStringValueAt(cell2.row, cell2.column);
if (v1 == null) {
return v2 == null ? 0 : -1;
} else {
return v2 == null ? 1 : v1.compareTo(v2);
}
}
}
}
}
public static void main(String[] args) {
String data[][] = {
{"","", "", ""},
{"a","d", "g", "j"},
{"b","e", "h", "k"},
{"c","f", "i", "l"},
{"a","d", "g", "j"},
{"b","e", "h", "k"},
{"c","f", "i", "l"},
};
JTable table = new JTable(data, new String[]{"col1", "col2", "col3", "col4"});
table.setDefaultRenderer(Object.class, new DefaultTableCellRenderer() {
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
Component comp = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
return comp;
}
});
table.setRowSorter(new SummaryTableSorter<>(table.getModel()));
JFrame frame = new JFrame("Sorting Table with Summary Row - santhosh.tekuri@gmail.com");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(new JScrollPane(table));
frame.setSize(250, 250);
frame.setVisible(true);
}
} |