| /******************************************************************************* |
| * Copyright (c) 2008, 2017 Matthew Hall 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: |
| * Matthew Hall - initial API and implementation (bug 239015) |
| * Matthew Hall - bug 266038 |
| ******************************************************************************/ |
| |
| package org.eclipse.jface.tests.internal.databinding.viewers; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.HashSet; |
| |
| import org.eclipse.core.databinding.observable.IObservable; |
| import org.eclipse.core.databinding.observable.list.IObservableList; |
| import org.eclipse.core.databinding.observable.list.WritableList; |
| import org.eclipse.core.databinding.observable.masterdetail.IObservableFactory; |
| import org.eclipse.core.databinding.observable.set.IObservableSet; |
| import org.eclipse.jface.databinding.conformance.util.ChangeEventTracker; |
| import org.eclipse.jface.databinding.conformance.util.DisposeEventTracker; |
| import org.eclipse.jface.databinding.viewers.ObservableListTreeContentProvider; |
| import org.eclipse.jface.tests.databinding.AbstractDefaultRealmTestCase; |
| import org.eclipse.jface.viewers.TreeViewer; |
| import org.eclipse.swt.widgets.Shell; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| /** |
| * @since 3.2 |
| * |
| */ |
| public class ObservableCollectionTreeContentProviderTest extends AbstractDefaultRealmTestCase { |
| private Shell shell; |
| private TreeViewer viewer; |
| ObservableListTreeContentProvider contentProvider; |
| |
| @Before |
| public void setUp() throws Exception { |
| super.setUp(); |
| shell = new Shell(); |
| viewer = new TreeViewer(shell); |
| } |
| |
| @After |
| public void tearDown() throws Exception { |
| shell.dispose(); |
| shell = null; |
| viewer = null; |
| super.tearDown(); |
| } |
| |
| @Test |
| public void testGetKnownElements_ExcludesInput() { |
| final Object input = new Object(); |
| Object[] rootElements = new Object[] { "one", "two", "three" }; |
| final IObservableList rootElementList = new WritableList(Arrays.asList(rootElements), null); |
| contentProvider = new ObservableListTreeContentProvider(new IObservableFactory() { |
| @Override |
| public IObservable createObservable(Object target) { |
| if (target == input) |
| return rootElementList; |
| return null; |
| } |
| }, null); |
| viewer.setContentProvider(contentProvider); |
| viewer.setInput(input); |
| |
| IObservableSet knownElements = contentProvider.getKnownElements(); |
| assertFalse(knownElements.contains(input)); |
| assertEquals(new HashSet<Object>(Arrays.asList(rootElements)), knownElements); |
| } |
| |
| @Test |
| public void testGetKnownElements_DisposedWithoutModificationOnContentProviderDispose() { |
| final Object input = new Object(); |
| final IObservableList rootElementList = new WritableList(Collections.singletonList("element"), null); |
| contentProvider = new ObservableListTreeContentProvider(new IObservableFactory() { |
| @Override |
| public IObservable createObservable(Object target) { |
| if (target == input) |
| return rootElementList; |
| return null; |
| } |
| }, null); |
| contentProvider.inputChanged(viewer, null, input); |
| |
| IObservableSet knownElements = contentProvider.getKnownElements(); |
| |
| // ensure there is an element in knownElements so we're sure that |
| // "no modification" is not due to the set being already empty. |
| contentProvider.getElements(input); |
| assertEquals(1, knownElements.size()); |
| |
| DisposeEventTracker disposeTracker = DisposeEventTracker.observe(knownElements); |
| ChangeEventTracker changeTracker = ChangeEventTracker.observe(knownElements); |
| |
| contentProvider.dispose(); |
| |
| assertEquals(0, changeTracker.count); |
| assertEquals(1, disposeTracker.count); |
| assertTrue(knownElements.isDisposed()); |
| } |
| } |