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Event-driven lists for dynamically filtered and sorted tables
/* Glazed Lists (c) 2003-2006 */
/* http://publicobject.com/glazedlists/ publicobject.com,*/
/* O'Dell Engineering Ltd.*/
package ca.odell.glazedlists.swing;
import ca.odell.glazedlists.BasicEventList;
import ca.odell.glazedlists.EventList;
import ca.odell.glazedlists.GlazedLists;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.TableColumnModelEvent;
import javax.swing.event.TableColumnModelListener;
import javax.swing.table.DefaultTableColumnModel;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;
import java.beans.PropertyChangeListener;
import java.util.*;
/**
* The general testing strategy in this class is to put a DefaultTableColumnModel
* and an EventTableColumnModel through their paces and ensure that their
* states match at each stage and that they fire identical sets of
* TableModelEvents in identical orders.
*/
public class EventTableColumnModelTest extends SwingTestCase {
// record the TableColumnModelEvents from each registered model
// so they can be compared for consistency at a later time
private TableColumnEventWatcher watcher;
public void guiSetUp() {
watcher = new TableColumnEventWatcher();
}
public void guiTestConstructor() {
// test empty models
EventTableColumnModel eventModel = watcher.createEventModel(new BasicEventList());
DefaultTableColumnModel defaultModel = watcher.createDefaultModel(Collections.EMPTY_LIST);
assertEquals(eventModel, defaultModel);
watcher.assertFiredEventsAgreeAndClear();
// test models with data
EventList columns = new BasicEventList();
columns.add(createColumn("name"));
columns.add(createColumn("age"));
defaultModel = watcher.createDefaultModel(columns);
eventModel = watcher.createEventModel(columns);
assertEquals(eventModel, defaultModel);
watcher.assertFiredEventsAgreeAndClear();
// test model with null TableColumn
try {
new EventTableColumnModel(GlazedLists.eventListOf(new TableColumn[] {null}));
fail("failed to throw an exception for a null TableColumn");
} catch (IllegalStateException ise) {
// expected
}
}
public void guiTestAddColumn() {
// create 3 models with the same TableColumns
EventList columns = new BasicEventList();
columns.add(createColumn("name"));
columns.add(createColumn("age"));
DefaultTableColumnModel defaultModel = watcher.createDefaultModel(columns);
EventTableColumnModel eventModel1 = watcher.createEventModel(columns);
EventTableColumnModel eventModel2 = watcher.createEventModel(GlazedLists.eventList(columns));
assertEquals(eventModel1, defaultModel);
assertEquals(eventModel2, defaultModel);
assertEquals(eventModel1, eventModel2);
defaultModel.getSelectionModel().addSelectionInterval(0, 0);
eventModel1.getSelectionModel().addSelectionInterval(0, 0);
eventModel2.getSelectionModel().addSelectionInterval(0, 0);
// add a new TableColumn to each of the models
final TableColumn newColumn = createColumn("new");
assertEquals(0, newColumn.getPropertyChangeListeners().length);
columns.add(newColumn);
defaultModel.addColumn(newColumn);
eventModel2.addColumn(newColumn);
assertEquals(3, newColumn.getPropertyChangeListeners().length);
assertEquals(eventModel1, defaultModel);
assertEquals(eventModel2, defaultModel);
assertEquals(eventModel1, eventModel2);
watcher.assertFiredEventsAgreeAndClear();
}
public void guiTestRemoveColumn() {
final TableColumn nameColumn = createColumn("name");
EventList columns = new BasicEventList();
columns.add(nameColumn);
columns.add(createColumn("age"));
DefaultTableColumnModel defaultModel = watcher.createDefaultModel(columns);
EventTableColumnModel eventModel1 = watcher.createEventModel(columns);
EventTableColumnModel eventModel2 = watcher.createEventModel(GlazedLists.eventList(columns));
assertEquals(eventModel1, defaultModel);
assertEquals(eventModel2, defaultModel);
assertEquals(eventModel1, eventModel2);
assertEquals(3, nameColumn.getPropertyChangeListeners().length);
columns.remove(0);
defaultModel.removeColumn(nameColumn);
eventModel2.removeColumn(nameColumn);
assertEquals(eventModel1, defaultModel);
assertEquals(eventModel2, defaultModel);
assertEquals(eventModel1, eventModel2);
assertEquals(0, nameColumn.getPropertyChangeListeners().length);
watcher.assertFiredEventsAgreeAndClear();
}
/**
* At the moment, EventTableColumnModel does not broadcast move events.
* In their place, listeners receive a columnRemoved() callback followed
* immediately by a columnAdded() callback. This is because Glazed Lists
* does not yet have a move event defined. The belief is that in practice
* this will produce the same net results anyway.
*/
public void guiTestMoveColumn() {
final TableColumn nameColumn = createColumn("name");
EventList columns = new BasicEventList();
columns.add(nameColumn);
columns.add(createColumn("age"));
DefaultTableColumnModel defaultModel = watcher.createDefaultModel(columns);
EventTableColumnModel eventModel1 = watcher.createEventModel(columns);
EventTableColumnModel eventModel2 = watcher.createEventModel(GlazedLists.eventList(columns));
assertEquals(eventModel1, defaultModel);
assertEquals(eventModel2, defaultModel);
assertEquals(eventModel1, eventModel2);
assertEquals(3, nameColumn.getPropertyChangeListeners().length);
// move the column at index 0 to index 1
columns.remove(0);
columns.add(nameColumn);
defaultModel.removeColumn(nameColumn);
defaultModel.addColumn(nameColumn);
eventModel2.moveColumn(0, 1);
assertEquals(eventModel1, defaultModel);
assertEquals(eventModel2, defaultModel);
assertEquals(eventModel1, eventModel2);
assertEquals(3, nameColumn.getPropertyChangeListeners().length);
// move the column at index 0 to index 0 (this simulates dragging a column to reorder it)
columns.set(0, columns.get(0));
defaultModel.moveColumn(0, 0);
eventModel2.moveColumn(0, 0);
watcher.assertFiredEventsAgreeAndClear();
}
public void guiTestMoveSelectedColumn() {
final TableColumn nameColumn = createColumn("name");
EventList columns = new BasicEventList();
columns.add(nameColumn);
columns.add(createColumn("age"));
DefaultTableColumnModel defaultModel = watcher.createDefaultModel(columns);
EventTableColumnModel eventModel = watcher.createEventModel(columns);
assertEquals(eventModel, defaultModel);
// move the unselected column at index 0 to index 1
eventModel.moveColumn(0, 1);
defaultModel.moveColumn(0, 1);
assertEquals(eventModel, defaultModel);
// select column 0
eventModel.getSelectionModel().addSelectionInterval(0, 0);
defaultModel.getSelectionModel().addSelectionInterval(0, 0);
assertEquals(eventModel, defaultModel);
// move the *selected* column at index 0 to index 1
eventModel.moveColumn(0, 1);
defaultModel.moveColumn(0, 1);
assertEquals(eventModel, defaultModel);
}
public void guitTestGetColumnIndex() {
EventList columns = new BasicEventList();
columns.add(createColumn("name"));
columns.add(createColumn("age"));
DefaultTableColumnModel defaultModel = watcher.createDefaultModel(columns);
EventTableColumnModel eventModel = watcher.createEventModel(columns);
assertEquals(0, defaultModel.getColumnIndex("name"));
assertEquals(0, eventModel.getColumnIndex("name"));
assertEquals(1, defaultModel.getColumnIndex("age"));
assertEquals(1, eventModel.getColumnIndex("age"));
try {
defaultModel.getColumnIndex("this is absent");
fail("failed to throw IllegalArgumentException for an unknown TableColumn identifier");
} catch (IllegalArgumentException e) {
// expected
}
try {
eventModel.getColumnIndex("this is absent");
fail("failed to throw IllegalArgumentException for an unknown TableColumn identifier");
} catch (IllegalArgumentException e) {
// expected
}
}
public void guitTestGetColumn() {
final TableColumn nameColumn = createColumn("name");
final TableColumn ageColumn = createColumn("age");
EventList columns = GlazedLists.eventListOf(new TableColumn[] {nameColumn, ageColumn});
DefaultTableColumnModel defaultModel = watcher.createDefaultModel(columns);
EventTableColumnModel eventModel = watcher.createEventModel(columns);
assertEquals(nameColumn, defaultModel.getColumn(0));
assertEquals(nameColumn, eventModel.getColumn(0));
assertEquals(ageColumn, defaultModel.getColumn(1));
assertEquals(ageColumn, eventModel.getColumn(1));
try {
defaultModel.getColumn(2);
fail("failed to throw IndexOutOfBoundsException");
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
eventModel.getColumn(2);
fail("failed to throw IndexOutOfBoundsException");
} catch (IndexOutOfBoundsException e) {
// expected
}
}
public void guitTestGetColumnIndexAtX() {
final TableColumn nameColumn = createColumn("name");
final TableColumn ageColumn = createColumn("age");
EventList columns = GlazedLists.eventListOf(new TableColumn[] {nameColumn, ageColumn});
DefaultTableColumnModel defaultModel = watcher.createDefaultModel(columns);
EventTableColumnModel eventModel = watcher.createEventModel(columns);
assertEquals(0, defaultModel.getColumnIndexAtX(1));
assertEquals(0, eventModel.getColumnIndexAtX(1));
assertEquals(1, defaultModel.getColumnIndexAtX(76));
assertEquals(1, eventModel.getColumnIndexAtX(76));
assertEquals(-1, defaultModel.getColumnIndexAtX(151));
assertEquals(-1, eventModel.getColumnIndexAtX(151));
}
private static TableColumn createColumn(Object identifier) {
TableColumn column = new TableColumn();
column.setIdentifier(identifier);
return column;
}
private void assertEquals(TableColumnModel model1, TableColumnModel model2) {
assertTrue(Arrays.equals(model1.getSelectedColumns(), model2.getSelectedColumns()));
assertEquals(model1.getTotalColumnWidth(), model2.getTotalColumnWidth());
assertEquals(model1.getSelectedColumnCount(), model2.getSelectedColumnCount());
assertEquals(model1.getColumnSelectionAllowed(), model2.getColumnSelectionAllowed());
assertEquals(model1.getColumnMargin(), model2.getColumnMargin());
assertEquals(model1.getColumnCount(), model2.getColumnCount());
// verify that the Enumeration of columns matches
Enumeration columnEnum1 = model1.getColumns();
Enumeration columnEnum2 = model2.getColumns();
while (columnEnum1.hasMoreElements() && columnEnum2.hasMoreElements()) {
assertSame(columnEnum1.nextElement(), columnEnum2.nextElement());
}
assertFalse(columnEnum1.hasMoreElements());
assertFalse(columnEnum2.hasMoreElements());
for (int i = 0; i < model1.getColumnCount(); i++) {
TableColumn column1 = model1.getColumn(i);
TableColumn column2 = model2.getColumn(i);
assertSame(column1, column2);
final List propertyChangeListeners = Arrays.asList(column1.getPropertyChangeListeners());
assertTrue(propertyChangeListeners.contains(model1));
assertTrue(propertyChangeListeners.contains(model2));
final Object identifier = column1.getIdentifier();
if (identifier != null) {
assertEquals(i, model1.getColumnIndex(identifier));
assertEquals(i, model2.getColumnIndex(identifier));
}
}
}
/**
* This class watches the events broadcasted by a group of TableColumnModels
* registered with it and stores then in Lists. The events include both
* TableColumnModelEvent objects and ListSelectionEvent objects for the
* underlying ListSelectionModel.
*
* After executing a variety of methods on the TableColumnModels which
* broadcast events, the {@link #assertFiredEventsAgreeAndClear()} method
* can be called to ensure that all watched TableColumnModels broadcasted
* identical events in identical orders.
*/
private static class TableColumnEventWatcher implements TableColumnModelListener {
private Map> eventMap = new HashMap>();
private Map objectToTableColumnModelMap = new HashMap();
private EventTableColumnModel createEventModel(EventList columns) {
EventTableColumnModel model = new EventTableColumnModel(columns);
model.setColumnSelectionAllowed(true);
addModel(model);
return model;
}
private DefaultTableColumnModel createDefaultModel(Collection columns) {
DefaultTableColumnModel model = new DefaultTableColumnModel();
for (Iterator i = columns.iterator(); i.hasNext();)
model.addColumn(i.next());
model.setColumnSelectionAllowed(true);
addModel(model);
return model;
}
private void addModel(TableColumnModel model) {
model.addColumnModelListener(this);
objectToTableColumnModelMap.put(model.getSelectionModel(), model);
}
private TableColumnModel getTableColumnModel(Object o) {
if (o instanceof TableColumnModel)
return (TableColumnModel) o;
final TableColumnModel model = objectToTableColumnModelMap.get(o);
if (model == null)
throw new IllegalArgumentException("unable to locate TableColumnModel for key object: " + o);
return model;
}
public void columnAdded(TableColumnModelEvent e) { addEvent(e); }
public void columnRemoved(TableColumnModelEvent e) { addEvent(e); }
public void columnMoved(TableColumnModelEvent e) { addEvent(e); }
public void columnMarginChanged(ChangeEvent e) { addEvent(e); }
public void columnSelectionChanged(ListSelectionEvent e) { addEvent(e); }
/**
* Check over every piece of state in the TableColumnModel and its
* selection model that we can. All TableColumnModels being watched
* must agree or an assertion will fail.
*/
public void assertFiredEventsAgreeAndClear() {
Map.Entry> previousEntry = null;
for (Iterator>> i = eventMap.entrySet().iterator(); i.hasNext();) {
Map.Entry> currentEntry = i.next();
if (previousEntry != null) {
List previousEventObjects = previousEntry.getValue();
List currentEventObjects = currentEntry.getValue();
assertEquals(previousEventObjects.size(), currentEventObjects.size());
for (int j = 0, n = previousEventObjects.size(); j < n; j++) {
EventObject previousEvent = previousEventObjects.get(j);
EventObject currentEvent = currentEventObjects.get(j);
if (previousEvent instanceof TableColumnModelEvent) {
TableColumnModelEvent previous = (TableColumnModelEvent) previousEvent;
TableColumnModelEvent current = (TableColumnModelEvent) currentEvent;
assertEquals(previous.getFromIndex(), current.getFromIndex());
assertEquals(previous.getToIndex(), current.getToIndex());
} else if (previousEvent instanceof ChangeEvent) {
assertEquals(ChangeEvent.class, previousEvent.getClass());
assertEquals(ChangeEvent.class, currentEvent.getClass());
} else if (previousEvent instanceof ListSelectionEvent) {
ListSelectionEvent previous = (ListSelectionEvent) previousEvent;
ListSelectionEvent current = (ListSelectionEvent) currentEvent;
assertEquals(previous.getFirstIndex(), current.getFirstIndex());
assertEquals(previous.getLastIndex(), current.getLastIndex());
assertEquals(previous.getValueIsAdjusting(), current.getValueIsAdjusting());
}
}
}
previousEntry = currentEntry;
}
eventMap.clear();
}
private void addEvent(EventObject e) {
final TableColumnModel model = getTableColumnModel(e.getSource());
List eventList = eventMap.get(model);
if (eventList == null) {
eventList = new ArrayList();
eventMap.put(model, eventList);
}
}
}
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