javax.swing.RowSorter.SortKey#getSortOrder ( )源码实例Demo

private boolean isSameSorter(List<? extends SortKey> sortKeys1,
        List<? extends SortKey> sortKeys2) {
    int size1 = (sortKeys1 == null) ? 0 : sortKeys1.size();
    int size2 = (sortKeys2 == null) ? 0 : sortKeys2.size();
    if ((size1 == 0) && (size2 == 0)) {
        return true;
    }
    if ((sortKeys1 == null) && (sortKeys2 == null))
        return true;
    if ((sortKeys1 == null) || (sortKeys2 == null))
        return false;
    if (size1 != size2)
        return false;
    for (int i = 0; i < size1; i++) {
        SortKey sortKey1 = sortKeys1.get(i);
        SortKey sortKey2 = sortKeys2.get(i);
        if ((sortKey1.getColumn() != sortKey2.getColumn())
                || (sortKey1.getSortOrder() != sortKey2.getSortOrder())) {
            return false;
        }
    }
    return true;
}
 

@Override
public void valueChanged(final ListSelectionEvent e) {
    // fix for issue 478 - no animations when sorter has changed
    List<? extends SortKey> sortKeys = (table.getRowSorter() == null) ? null
            : table.getRowSorter().getSortKeys();
    boolean isDifferentSorter = !isSameSorter(sortKeys, oldSortKeys);
    if (e.getValueIsAdjusting() && isDifferentSorter)
        return;
    if (sortKeys == null) {
        oldSortKeys = null;
    } else {
        oldSortKeys = new ArrayList<>();
        for (SortKey sortKey : sortKeys) {
            SortKey copy = new SortKey(sortKey.getColumn(), sortKey.getSortOrder());
            oldSortKeys.add(copy);
        }
    }
    syncSelection(isDifferentSorter);
}
 

@Override
public Icon getIcon() {
	int modelCol = header.getTable().convertColumnIndexToModel(curCol);
	TableModel model = header.getTable().getModel();
	if (model instanceof ExtendedJTableSorterModel) {
		ExtendedJTableSorterModel sortModel = (ExtendedJTableSorterModel) model;
		switch (sortModel.getSortingStatus(modelCol)) {
			case ExtendedJTableSorterModel.ASCENDING:
				return UIManager.getIcon("Table.ascendingSortIcon");
			case ExtendedJTableSorterModel.DESCENDING:
				return UIManager.getIcon("Table.descendingSortIcon");
			case ExtendedJTableSorterModel.NOT_SORTED:
			default:
				return null;
		}
	} else {
		SortKey sortKey = getSortKey(header.getTable().getRowSorter(), modelCol);
		SortOrder sortOrder = sortKey != null ? sortKey.getSortOrder() : SortOrder.UNSORTED;
		switch (sortOrder) {
			case ASCENDING:
				return UIManager.getIcon("Table.ascendingSortIcon");
			case DESCENDING:
				return UIManager.getIcon("Table.descendingSortIcon");
			case UNSORTED:
			default:
				return null;
		}
	}
}
 

/**
 * Overloaded to return an icon suitable to the primary sorted column, or null if
 * the column is not the primary sort key.
 *
 * @param table the <code>JTable</code>.
 * @param column the column index.
 * @return the sort icon, or null if the column is unsorted.
 */
protected Icon getIcon(JTable table, int column) {
  SortKey sortKey = getSortKey(table, column);
  if (sortKey != null && table.convertColumnIndexToView(sortKey.getColumn()) == column) {
    switch (sortKey.getSortOrder()) {
      case ASCENDING:
        return UIManager.getIcon("Table.ascendingSortIcon");
      case DESCENDING:
        return UIManager.getIcon("Table.descendingSortIcon");
    }
  }
  return null;
}