以下情况:我有一个带有RowHeader的J(X)表(作为guidline,我使用了Rob Camicks中的一个很棒Examples)。一切都按预期工作。
根据要求,我从服务器收到的数据已经包含一个tablerownumber,我必须在rowheader中显示,数据应该是可过滤的。所以我扩展了示例,并添加了一个过滤器。当我过滤视图时,我看到了行号中的间隙(例如:1,3,6,...),这是期望的效果。
为了能够通过我自己的tablerow过滤和排序表格,我添加了TableRowSorter
。在这里,我开始感到困惑。该示例对mainTable和rowHeaderTable使用相同的TableModel和SelectionModel:
setModel( main.getModel() );
setSelectionModel( main.getSelectionModel() );
这很好,因为我不必同步它们。但关于TableRowSorter
我突然不确定,如果我也可以甚至不得不使用相同的TableRowSorter
- 实例,或者我必须为每个表创建一个TableRowSorter
。首先,我将相同的内容添加到两个表中,因为这看起来很实际,但在很多情况下我得到了IndexOutOfBound-Exceptions
。经过一番挖掘后,我发现这是因为TableRowSorter
在每个TableModelEvent
得到两次更新,因为每个表(RowHeader和MainTable)都会自己通知TableRowSorter
表更改。
现在我不确定哪条路要走。我想到了以下解决方案:我应该添加第二个TableRowSorter(每个表一个)并同步它们,还是应该将RowMeaderTable中的TableModel包装起来并让它不激活任何事件?或者也许我应该创建我自己的RowHeaderTable类型,它不会通知分拣机有关变化的信息?
答案 0 :(得分:3)
这里快速(谨防:未经过正式测试!使用示例正常工作)包装RowSorter的实现。
客户有责任使其与主表中使用的rowSorter保持同步
用法示例(根据SwingX测试基础架构和SwingX sortController / table):
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
}
}