遵循的情况:我有一个带有RowHeader的J(X)Table(作为指导,我使用了Rob Camicks的其中一位Examples)。所有工作都按预期进行。
根据要求,我从服务器接收的数据已经包含tablerownumber,我必须在行标题中显示该数据,并且该数据应该是可过滤的。因此,我扩展了该示例,并添加了一个过滤器。当我过滤视图时,我在行号中看到了空白(例如:1、3、6 ..),这是理想的效果。
为了能够按自己的表格行对表格进行过滤和排序,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() );
很好,因为我不必同步它们。但是对于
TableRowSorter
,我突然不确定,是否我也可以甚至必须使用相同的TableRowSorter
-Instance,或者是否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,因为这似乎很实用,但是随后在很多情况下,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
上都被更新了两次,因为每个表(RowHeader和MainTable)都自行向TableRowSorter
通知了有关表更改的信息。现在我不确定哪种正确的方法是。我想到以下解决方案:我应该添加第二个TableRowSorter(每个表一个)并对其进行同步,还是应该将TableModel包装在RowHeaderTable中,并且不触发任何事件?或者,也许我应该创建自己的RowHeaderTable,它根本不通知Sorters有关更改的信息?
最佳答案
这是包装RowSorter的一种快速(请注意:未经正式测试!使用示例很好用)。
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测试基础结构和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
}
}