| /******************************************************************************* |
| * Copyright (c) 2006 Cerner Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Brad Reynolds - initial API and implementation |
| * Matthew Hall - bugs 208332, 213145 |
| ******************************************************************************/ |
| |
| package org.eclipse.core.tests.internal.databinding.observable; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import junit.framework.Test; |
| import junit.framework.TestSuite; |
| |
| import org.eclipse.core.databinding.observable.ChangeEvent; |
| import org.eclipse.core.databinding.observable.Diffs; |
| import org.eclipse.core.databinding.observable.IChangeListener; |
| import org.eclipse.core.databinding.observable.IObservable; |
| import org.eclipse.core.databinding.observable.IObservableCollection; |
| import org.eclipse.core.databinding.observable.IStaleListener; |
| import org.eclipse.core.databinding.observable.Observables; |
| import org.eclipse.core.databinding.observable.Realm; |
| import org.eclipse.core.databinding.observable.StaleEvent; |
| import org.eclipse.core.databinding.observable.list.IListChangeListener; |
| import org.eclipse.core.databinding.observable.list.IObservableList; |
| import org.eclipse.core.databinding.observable.list.ListChangeEvent; |
| import org.eclipse.core.databinding.observable.list.ListDiff; |
| import org.eclipse.core.databinding.observable.list.ListDiffEntry; |
| import org.eclipse.core.databinding.observable.list.ObservableList; |
| import org.eclipse.core.databinding.observable.list.WritableList; |
| import org.eclipse.core.internal.databinding.observable.UnmodifiableObservableList; |
| import org.eclipse.jface.databinding.conformance.ObservableListContractTest; |
| import org.eclipse.jface.databinding.conformance.delegate.AbstractObservableCollectionContractDelegate; |
| import org.eclipse.jface.tests.databinding.AbstractDefaultRealmTestCase; |
| |
| public class UnmodifiableObservableListTest extends |
| AbstractDefaultRealmTestCase { |
| ObservableList unmodifiable; |
| ObservableList mutable; |
| |
| protected void setUp() throws Exception { |
| super.setUp(); |
| |
| List list = new ArrayList(); |
| list.add("1"); |
| list.add("2"); |
| |
| mutable = new MutableObservableList(list, String.class); |
| unmodifiable = (ObservableList) Observables |
| .unmodifiableObservableList(mutable); |
| } |
| |
| public void testFiresChangeEvents() throws Exception { |
| ChangeCounter mutableListener = new ChangeCounter(); |
| ChangeCounter unmodifiableListener = new ChangeCounter(); |
| |
| mutable.addChangeListener(mutableListener); |
| unmodifiable.addChangeListener(unmodifiableListener); |
| |
| assertEquals(0, mutableListener.count); |
| assertEquals(0, unmodifiableListener.count); |
| mutable.add("3"); |
| assertEquals(1, mutableListener.count); |
| assertEquals(1, unmodifiableListener.count); |
| } |
| |
| public void testFiresListChangeEvents() throws Exception { |
| ListChangeCounter mutableListener = new ListChangeCounter(); |
| ListChangeCounter unmodifiableListener = new ListChangeCounter(); |
| |
| mutable.addListChangeListener(mutableListener); |
| unmodifiable.addListChangeListener(unmodifiableListener); |
| |
| assertEquals(0, mutableListener.count); |
| assertEquals(0, unmodifiableListener.count); |
| |
| String element = "3"; |
| mutable.add(element); |
| assertEquals(1, mutableListener.count); |
| assertEquals(mutable, mutableListener.source); |
| assertEquals(1, mutableListener.diff.getDifferences().length); |
| |
| ListDiffEntry difference = mutableListener.diff.getDifferences()[0]; |
| assertEquals(element, difference.getElement()); |
| assertTrue(difference.isAddition()); |
| assertEquals(3, mutable.size()); |
| |
| assertEquals(1, unmodifiableListener.count); |
| assertEquals(unmodifiable, unmodifiableListener.source); |
| assertEquals(1, unmodifiableListener.diff.getDifferences().length); |
| |
| difference = unmodifiableListener.diff.getDifferences()[0]; |
| assertEquals(element, difference.getElement()); |
| assertTrue(difference.isAddition()); |
| assertEquals(3, unmodifiable.size()); |
| } |
| |
| public void testFiresStaleEvents() throws Exception { |
| StaleCounter mutableListener = new StaleCounter(); |
| StaleCounter unmodifiableListener = new StaleCounter(); |
| |
| mutable.addStaleListener(mutableListener); |
| unmodifiable.addStaleListener(unmodifiableListener); |
| |
| assertEquals(0, mutableListener.count); |
| assertEquals(0, unmodifiableListener.count); |
| mutable.setStale(true); |
| assertEquals(1, mutableListener.count); |
| assertEquals(mutable, mutableListener.source); |
| assertTrue(mutable.isStale()); |
| assertEquals(1, unmodifiableListener.count); |
| assertEquals(unmodifiable, unmodifiableListener.source); |
| assertTrue(unmodifiable.isStale()); |
| } |
| |
| public void testIsStale() throws Exception { |
| assertFalse(mutable.isStale()); |
| assertFalse(unmodifiable.isStale()); |
| mutable.setStale(true); |
| assertTrue(mutable.isStale()); |
| assertTrue(unmodifiable.isStale()); |
| } |
| |
| public void testSetStaleOnUnmodifiableList() throws Exception { |
| try { |
| unmodifiable.setStale(true); |
| fail("UnsupportedOperationException should have been thrown"); |
| } catch (UnsupportedOperationException e) { |
| } |
| } |
| |
| private static class StaleCounter implements IStaleListener { |
| int count; |
| IObservable source; |
| |
| public void handleStale(StaleEvent event) { |
| count++; |
| this.source = event.getObservable(); |
| } |
| } |
| |
| private static class ChangeCounter implements IChangeListener { |
| int count; |
| IObservable source; |
| |
| public void handleChange(ChangeEvent event) { |
| count++; |
| this.source = event.getObservable(); |
| } |
| } |
| |
| private static class ListChangeCounter implements IListChangeListener { |
| int count; |
| IObservableList source; |
| ListDiff diff; |
| |
| public void handleListChange(ListChangeEvent event) { |
| count++; |
| this.source = event.getObservableList(); |
| this.diff = event.diff; |
| } |
| } |
| |
| private static class MutableObservableList extends ObservableList { |
| /** |
| * @param wrappedList |
| * @param elementType |
| */ |
| public MutableObservableList(List wrappedList, Object elementType) { |
| super(wrappedList, elementType); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.internal.databinding.provisional.observable.list.ObservableList#add(java.lang.Object) |
| */ |
| public boolean add(Object o) { |
| boolean result = wrappedList.add(o); |
| fireListChange(Diffs.createListDiff(Diffs.createListDiffEntry( |
| wrappedList.size() - 1, true, o))); |
| |
| return result; |
| } |
| } |
| |
| public static Test suite() { |
| TestSuite suite = new TestSuite(UnmodifiableObservableListTest.class.getName()); |
| suite.addTestSuite(UnmodifiableObservableListTest.class); |
| suite.addTest(ObservableListContractTest.suite(new Delegate())); |
| return suite; |
| } |
| |
| private static class Delegate extends |
| AbstractObservableCollectionContractDelegate { |
| private Object elementType = new Object(); |
| |
| public IObservableCollection createObservableCollection(Realm realm, |
| int elementCount) { |
| IObservableList backingList = new WritableList(realm, |
| new ArrayList(), elementType); |
| IObservableList result = new UnmodifiableObservableListStub( |
| backingList); |
| for (int i = 0; i < elementCount; i++) |
| backingList.add(createElement(result)); |
| return result; |
| } |
| |
| public Object createElement(IObservableCollection collection) { |
| return new Object(); |
| } |
| |
| public Object getElementType(IObservableCollection collection) { |
| return elementType; |
| } |
| |
| public void change(IObservable observable) { |
| UnmodifiableObservableListStub unmodifiableList = (UnmodifiableObservableListStub) observable; |
| IObservableList wrappedList = unmodifiableList.wrappedList; |
| wrappedList.add(createElement(unmodifiableList)); |
| } |
| } |
| |
| private static class UnmodifiableObservableListStub extends |
| UnmodifiableObservableList { |
| IObservableList wrappedList; |
| |
| UnmodifiableObservableListStub(IObservableList wrappedList) { |
| super(wrappedList); |
| this.wrappedList = wrappedList; |
| } |
| } |
| } |