List<Object> additions() { List<Object> result = Lists.newArrayList(); for (ListDiffEntry next : diff.getDifferences()) { if (next.isAddition()) { result.add(next.getElement()); } } return result; }
@Override public void handleListChange(ListChangeEvent<E> event) { for (ListDiffEntry<? extends E> entry : event.diff.getDifferencesAsList()) { E element = entry.getElement(); if (entry.isAddition()) { added(element); } else { removed(element); } } }
public void handleListChange(ListChangeEvent event) { ListDiffEntry[] differences = event.diff.getDifferences(); for (int i = 0; i < differences.length; i++) { ListDiffEntry entry = differences[i]; if (entry.isAddition()) { listenerSupport.hookListener(entry.getElement()); } else { listenerSupport.unhookListener(entry.getElement()); } } }
public void handleListChange(ListChangeEvent event) { ListDiff diff = event.diff; ListDiffEntry[] differences = diff.getDifferences(); for (int i = 0; i < differences.length; i++) { ListDiffEntry listDiffEntry = differences[i]; Binding binding = (Binding) listDiffEntry.getElement(); if (listDiffEntry.isAddition()) { binding.getTarget().addChangeListener(uiChangeListener); } else { binding.getTarget().removeChangeListener(uiChangeListener); } } }
public void handleListChange(ListChangeEvent event) { if (viewer.getControl().isDisposed()) { return; } ListDiffEntry[] differences = event.diff.getDifferences(); for (int i = 0; i < differences.length; i++) { ListDiffEntry entry = differences[i]; if (entry.isAddition()) { knownElements.add(entry.getElement()); if (viewer instanceof AbstractListViewer) { ((AbstractListViewer) viewer).add(entry.getElement()); } else { ((TableViewer) viewer).insert(entry.getElement(), entry.getPosition()); } } else { if (viewer instanceof AbstractListViewer) { ((AbstractListViewer) viewer).remove(entry.getElement()); } else { ((TableViewer) viewer).remove(entry.getElement()); } knownElements.remove(entry.getElement()); } } }
@Test public void test() { WritableSet set = new WritableSet(TestRealm.getDefault()); SetToListAdapter adapter = new SetToListAdapter(set, null); ListChangeListener listener = new ListChangeListener(); adapter.addListChangeListener(listener); set.add("Huhu"); ListDiffEntry e1 = listener.event.diff.getDifferences()[0]; assertTrue(e1.isAddition()); assertEquals("Huhu", e1.getElement()); assertEquals(1, adapter.size()); set.add("Haha"); e1 = listener.event.diff.getDifferences()[0]; assertTrue(e1.isAddition()); assertEquals("Haha", e1.getElement()); assertEquals(1, e1.getPosition()); assertEquals(2, adapter.size()); set.add("Blabla"); e1 = listener.event.diff.getDifferences()[0]; assertTrue(e1.isAddition()); assertEquals("Blabla", e1.getElement()); assertEquals(2, e1.getPosition()); assertEquals(3, adapter.size()); List<String> added = Arrays.asList("Blublu", "Foo", "Bar"); set.addAll(added); e1 = listener.event.diff.getDifferences()[0]; ListDiffEntry e2 = listener.event.diff.getDifferences()[1]; ListDiffEntry e3 = listener.event.diff.getDifferences()[2]; assertEquals(3, listener.event.diff.getDifferences().length); assertEquals(6, adapter.size()); assertTrue(e1.isAddition()); assertTrue(e2.isAddition()); assertTrue(e3.isAddition()); assertTrue(added.contains(e1.getElement())); assertTrue(added.contains(e2.getElement())); assertTrue(added.contains(e3.getElement())); assertTrue(e1.getPosition() >= 3 && e1.getPosition() <= 5); assertTrue(e2.getPosition() >= 3 && e1.getPosition() <= 5); assertTrue(e3.getPosition() >= 3 && e1.getPosition() <= 5); set.remove("Haha"); e1 = listener.event.diff.getDifferences()[0]; assertTrue(!e1.isAddition()); assertEquals("Haha", e1.getElement()); assertEquals(1, e1.getPosition()); assertEquals(5, adapter.size()); set.removeAll(added); e1 = listener.event.diff.getDifferences()[0]; e2 = listener.event.diff.getDifferences()[1]; e3 = listener.event.diff.getDifferences()[2]; assertEquals(3, listener.event.diff.getDifferences().length); assertEquals(2, adapter.size()); assertTrue(!e1.isAddition()); assertTrue(!e2.isAddition()); assertTrue(!e3.isAddition()); assertTrue(added.contains(e1.getElement())); assertTrue(added.contains(e2.getElement())); assertTrue(added.contains(e3.getElement())); assertTrue(e1.getPosition() >= 2 && e1.getPosition() <= 4); assertTrue(e2.getPosition() >= 2 && e1.getPosition() <= 4); assertTrue(e3.getPosition() >= 2 && e1.getPosition() <= 4); }