这是一个包装 RowSorter 的快速（注意：未经过正式测试！使用示例工作正常）的实现。
- 在收到模型更改通知时不执行任何操作
- 委托所有状态查询
- 侦听包装的 rowSorter 并传播其事件
客户有责任使其与主表中使用的 rowSorter 保持同步
使用示例（就 SwingX 测试基础设施和 SwingX sortController/table 而言）：
public void interactiveRowSorterWrapperSharedXTable() {
final DefaultTableModel tableModel = new DefaultTableModel(list.getElementCount(), 2) {
@Override
public Class<?> getColumnClass(int columnIndex) {
return Integer.class;
}
};
for (int i = 0; i < tableModel.getRowCount(); i++) {
tableModel.setValueAt(i, i, 0);
tableModel.setValueAt(tableModel.getRowCount() - i, i, 1);
}
final JXTable master = new JXTable(tableModel);
final TableSortController<TableModel> rowSorter = (TableSortController<TableModel>) master.getRowSorter();
master.removeColumn(master.getColumn(0));
final JXTable rowHeader = new JXTable(master.getModel());
rowHeader.setAutoCreateRowSorter(false);
rowHeader.removeColumn(rowHeader.getColumn(1));
rowHeader.setRowSorter(new RowSorterWrapper<TableModel>(rowSorter));
rowHeader.setSelectionModel(master.getSelectionModel());
// need to disable selection update on one of the table's
// otherwise the selection is not kept in model coordinates
rowHeader.setUpdateSelectionOnSort(false);
JScrollPane scrollPane = new JScrollPane(master);
scrollPane.setRowHeaderView(rowHeader);
JXFrame frame = showInFrame(scrollPane, "xtables (wrapped sortController): shared model/selection");
Action fireAllChanged = new AbstractAction("fireDataChanged") {
@Override
public void actionPerformed(ActionEvent e) {
tableModel.fireTableDataChanged();
}
};
addAction(frame, fireAllChanged);
Action removeFirst = new AbstractAction("remove firstM") {
@Override
public void actionPerformed(ActionEvent e) {
tableModel.removeRow(0);
}
};
addAction(frame, removeFirst);
Action removeLast = new AbstractAction("remove lastM") {
@Override
public void actionPerformed(ActionEvent e) {
tableModel.removeRow(tableModel.getRowCount() - 1);
}
};
addAction(frame, removeLast);
Action filter = new AbstractAction("toggle filter") {
@Override
public void actionPerformed(ActionEvent e) {
RowFilter filter = rowSorter.getRowFilter();
if (filter == null) {
rowSorter.setRowFilter(RowFilter.regexFilter("^1", 1));
} else {
rowSorter.setRowFilter(null);
}
}
};
addAction(frame, filter);
addStatusMessage(frame, "row header example with RowSorterWrapper");
show(frame);
}
RowSorterWrapper：
/**
* Wrapping RowSorter for usage (f.i.) in a rowHeader.
*
* Delegates all state queries,
* does nothing on receiving notification of model changes,
* propagates rowSorterEvents from delegates.
*
* Beware: untested!
*
* @author Jeanette Winzenburg, Berlin
*/
public class RowSorterWrapper<M> extends RowSorter<M> {
private RowSorter<M> delegate;
private RowSorterListener rowSorterListener;
public RowSorterWrapper(RowSorter<M> delegate) {
this.delegate = delegate;
delegate.addRowSorterListener(getRowSorterListener());
}
/**
* Creates and returns a RowSorterListener which re-fires received
* events.
*
* @return
*/
protected RowSorterListener getRowSorterListener() {
if (rowSorterListener == null) {
RowSorterListener listener = new RowSorterListener() {
@Override
public void sorterChanged(RowSorterEvent e) {
if (RowSorterEvent.Type.SORT_ORDER_CHANGED == e.getType()) {
fireSortOrderChanged();
} else if (RowSorterEvent.Type.SORTED == e.getType()) {
fireRowSorterChanged(null); }
}
};
rowSorterListener = listener;
}
return rowSorterListener;
}
@Override
public M getModel() {
return delegate.getModel();
}
@Override
public void toggleSortOrder(int column) {
delegate.toggleSortOrder(column);
}
@Override
public int convertRowIndexToModel(int index) {
return delegate.convertRowIndexToModel(index);
}
@Override
public int convertRowIndexToView(int index) {
return delegate.convertRowIndexToView(index);
}
@Override
public void setSortKeys(List keys) {
delegate.setSortKeys(keys);
}
@Override
public List getSortKeys() {
return delegate.getSortKeys();
}
@Override
public int getViewRowCount() {
return delegate.getViewRowCount();
}
@Override
public int getModelRowCount() {
return delegate.getModelRowCount();
}
@Override
public void modelStructureChanged() {
// do nothing, all work done by delegate
}
@Override
public void allRowsChanged() {
// do nothing, all work done by delegate
}
@Override
public void rowsInserted(int firstRow, int endRow) {
// do nothing, all work done by delegate
}
@Override
public void rowsDeleted(int firstRow, int endRow) {
// do nothing, all work done by delegate
}
@Override
public void rowsUpdated(int firstRow, int endRow) {
// do nothing, all work done by delegate
}
@Override
public void rowsUpdated(int firstRow, int endRow, int column) {
// do nothing, all work done by delegate
}
}
