/**
* Gets the model indexes for the given rows.
*
* @param <Q> the type of the rows.
* @param tableModel the table model.
* @param entities the entities to be queried.
* @return the model indexes.
*/
public static <Q> List<Integer> getModelIndexes(GlazedTableModel tableModel, List<Q> entities) {
Assert.notNull(tableModel, TableUtils.TABLE_MODEL);
Assert.notNull(entities, "entities");
final EventList<Q> eventList = TableUtils.getSource(tableModel);
final List<Integer> modelIndexes = new ArrayList<Integer>(entities.size());
for (int i = 0; i < entities.size(); ++i) {
modelIndexes.add(eventList.indexOf(entities.get(i)));
}
return modelIndexes;
}
/**
* Gets the current selection.
*
* <p>Ensures entities are returned in the same order as <code>modelIndexes</code>.
*
* <p><em>This method exists for performance reasons when <code>modelIndexes</code> are already
* known</em>.
*
* @param <Q> the type of the rows.
* @param table the table.
* @param tableModel the table model.
* @param modelIndexes the model indexes.
* @return the selected entities.
*/
public static <Q> List<Q> getSelection(
JTable table, GlazedTableModel tableModel, List<Integer> modelIndexes) {
Assert.notNull(table, TableUtils.TABLE);
Assert.notNull(tableModel, TableUtils.TABLE_MODEL);
final EventList<Q> eventList = TableUtils.getSource(tableModel);
final List<Q> selectedEntities = new ArrayList<Q>(modelIndexes.size());
for (Integer modelIndex : modelIndexes) {
selectedEntities.add(eventList.get(modelIndex));
}
return selectedEntities;
}
/**
* Show the given entities in a table.
*
* <p>When dealing with <code>EventList</code> performance is important. This method ensures table
* model events are launched just once at the end.
*
* @param <Q> the type of the rows.
* @param tableModel the table model.
* @param entities the entities to be shown.
* @param attach whether to attach new entities to currents. If <code>false</code> currents are
* replaced.
* @return <code>true</code> if success and <code>false</code> in other case (i.e.:user rejected
* change).
*/
@SuppressWarnings("unchecked")
public static <Q> Boolean showEntities(
GlazedTableModel tableModel, final List<Q> entities, final Boolean attach) {
Assert.notNull(tableModel, TableUtils.TABLE_MODEL);
Assert.notNull(entities, "entities");
Assert.notNull(attach, "attach");
final EventList<Q> eventList = TableUtils.getSource(tableModel);
// Proceed only if ...
final Boolean proceed;
if (attach) {
// ... must attach and entities are not contained in eventList or...
proceed = !CollectionUtils.isSubCollection(entities, eventList);
} else {
// ... must replace and entities are not equals to eventList
proceed = !CollectionUtils.isEqualCollection(entities, eventList);
}
if (proceed) {
if (TableUtils.LOGGER.isDebugEnabled()) {
TableUtils.LOGGER.debug("About to show entities " + entities);
}
// Avoid notifying in every single change, instead do it at the end
final TableModelListener[] listeners = tableModel.getTableModelListeners();
for (final TableModelListener listener : listeners) {
tableModel.removeTableModelListener(listener);
}
SwingUtils.runInEventDispatcherThread(
new Runnable() {
@Override
public void run() {
// Update the contents of the event list
eventList.getReadWriteLock().writeLock().lock();
try {
if (!attach) {
eventList.clear();
}
eventList.addAll(eventList.size(), CollectionUtils.subtract(entities, eventList));
} finally {
// Since Swing is multithread we need to lock before and unlock later
// http://sites.google.com/site/glazedlists/documentation/faq
eventList.getReadWriteLock().writeLock().unlock();
}
}
});
// Enable notifying: install listeners again
for (final TableModelListener listener : listeners) {
tableModel.addTableModelListener(listener);
}
// Since listeners were uninstalled notification should be explicit
tableModel.fireTableDataChanged();
}
return proceed;
}
