/**
* Checks and verifies whether the ListDataListener has been reregistered properly. This will fail
* if the change support fails to fire a change event when the instance changes.
*
* <p>Creates a SelectionInList on list1, then changes it to list2, modifies boths lists, and
* finally checks whether the SelectionInList has fired the correct events.
*/
private static void testReregistersListDataListener(
ObservableList<Object> list1, ObservableList<Object> list2) {
ListDataReport listDataReport1 = new ListDataReport();
ListDataReport listDataReport2 = new ListDataReport();
ListDataReport listDataReportSel = new ListDataReport();
SelectionInList<Object> sil = new SelectionInList<Object>((ListModel) list1);
// Change the list model.
// Changes on list1 shall not affect the SelectionInList.
// Changes in list2 shall be the same as for the SelectionInList.
sil.setListModel(list2);
list1.addListDataListener(listDataReport1);
list2.addListDataListener(listDataReport2);
sil.addListDataListener(listDataReportSel);
// Modify both list models.
list1.add("one1");
list1.add("two1");
list1.add("three1");
list1.add("four1");
list1.remove(1);
list1.remove(0);
list1.set(0, "newOne1");
list1.set(1, "newTwo1");
assertEquals("Events counted for list model 1", 8, listDataReport1.eventCount());
assertEquals("No events counted for list model 2", 0, listDataReport2.eventCount());
assertEquals("No events counted for the SelectionInList", 0, listDataReportSel.eventCount());
list2.add("one2");
list2.add("two2");
list2.add("three2");
list2.remove(1);
list2.set(0, "newOne2");
assertEquals("Events counted for list model 2", 5, listDataReport2.eventCount());
assertEquals("Events counted for the SelectionInList", 5, listDataReportSel.eventCount());
// Compare the event lists.
assertEquals(
"Events for list2 and SelectionInList differ.", listDataReport2, listDataReportSel);
}
/** Checks that list data events from an underlying are reported by the SelectionInList. */
public static void testFiresListModelListDataEvents() {
PropertyChangeReport changeReport = new PropertyChangeReport();
ListDataReport listDataReport1 = new ListDataReport();
ListDataReport listDataReport2 = new ListDataReport();
ArrayListModel<String> arrayListModel = new ArrayListModel<String>();
SelectionInList<String> sil = new SelectionInList<String>((ListModel) arrayListModel);
arrayListModel.addListDataListener(listDataReport1);
sil.addListDataListener(listDataReport2);
sil.addValueChangeListener(changeReport);
arrayListModel.add("One");
assertEquals("No list change.", changeReport.eventCount(), 0);
assertEquals("An element has been added.", listDataReport2.eventCount(), 1);
assertEquals("An element has been added.", listDataReport2.eventCountAdd(), 1);
arrayListModel.addAll(Arrays.asList(new String[] {"two", "three", "four"}));
assertEquals("No list change.", changeReport.eventCount(), 0);
assertEquals("An element block has been added.", listDataReport2.eventCount(), 2);
assertEquals("An element block has been added.", listDataReport2.eventCountAdd(), 2);
arrayListModel.remove(0);
assertEquals("An element has been removed.", listDataReport2.eventCount(), 3);
assertEquals("No element has been added.", listDataReport2.eventCountAdd(), 2);
assertEquals("An element has been removed.", listDataReport2.eventCountRemove(), 1);
arrayListModel.set(1, "newTwo");
assertEquals("An element has been replaced.", listDataReport2.eventCount(), 4);
assertEquals("No element has been added.", listDataReport2.eventCountAdd(), 2);
assertEquals("No element has been removed.", listDataReport2.eventCountRemove(), 1);
assertEquals("An element has been changed.", listDataReport2.eventCountChange(), 1);
// Compare the event counts of the list models listener
// with the SelectionInList listener.
assertEquals(
"Add event counts are equal.",
listDataReport1.eventCountAdd(),
listDataReport2.eventCountAdd());
assertEquals(
"Remove event counts are equal.",
listDataReport1.eventCountRemove(),
listDataReport2.eventCountRemove());
assertEquals(
"Change event counts are equal.",
listDataReport1.eventCountChange(),
listDataReport2.eventCountChange());
}
/**
* Tests the SelectionInList ListDataEvents fired during list changes. The transitions are {} ->
* {} -> {a, b} -> {b, c} -> {a, b, c} -> {}.
*/
public static void testListChangeEvents() {
List<String> list1 = Collections.emptyList();
List<String> list2 = Collections.emptyList();
List<String> list3 = Arrays.asList("a", "b");
List<String> list4 = Arrays.asList("b", "c");
List<String> list5 = Arrays.asList("a", "b", "c");
List<String> list6 = Collections.emptyList();
SelectionInList<String> sil = new SelectionInList<String>(list1);
ListDataReport report = new ListDataReport();
sil.addListDataListener(report);
sil.setList(list2);
assertEquals("The transition {} -> {} fires no ListDataEvent.", 0, report.eventCount());
report.clearEventList();
sil.setList(list3);
assertEquals("The transition {} -> {a, b} fires 1 add event.", 1, report.eventCount());
assertEvent(
"The transition {} -> {a, b} fires an add event with interval[0, 1].",
ListDataEvent.INTERVAL_ADDED,
0,
1,
report.lastEvent());
report.clearEventList();
sil.setList(list4);
assertEquals("The transition {a, b} -> {b, c} fires 1 add event.", 1, report.eventCount());
assertEvent(
"The transition {a, b} -> {b, c} fires an add event with interval[0, 1].",
ListDataEvent.CONTENTS_CHANGED,
0,
1,
report.lastEvent());
report.clearEventList();
sil.setList(list5);
assertEquals("The transition {a, b} -> {b, c, d} fires two events.", 2, report.eventCount());
assertEvent(
"The transition {b, c} -> {a, b, c} fires an add event with interval[2, 2].",
ListDataEvent.INTERVAL_ADDED,
2,
2,
report.previousEvent());
assertEvent(
"The transition {b, c} -> {a, b, c} fires a contents changed with interval[0, 1].",
ListDataEvent.CONTENTS_CHANGED,
0,
1,
report.lastEvent());
report.clearEventList();
sil.setList(list6);
assertEquals("The transition {b, c, d} -> {} fires one event.", 1, report.eventCount());
assertEvent(
"The transition {b, c, d} -> {} fires a remove event with interval[0, 1].",
ListDataEvent.INTERVAL_REMOVED,
0,
2,
report.lastEvent());
}