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/*******************************************************************************
* Copyright (c) 2008, 2009 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 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;
/**
* @since 3.2
*
*/
public class ObservableCollectionTreeContentProviderTest extends
AbstractDefaultRealmTestCase {
private Shell shell;
private TreeViewer viewer;
ObservableListTreeContentProvider contentProvider;
protected void setUp() throws Exception {
super.setUp();
shell = new Shell();
viewer = new TreeViewer(shell);
}
protected void tearDown() throws Exception {
shell.dispose();
shell = null;
viewer = null;
super.tearDown();
}
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() {
public IObservable createObservable(Object target) {
if (target == input)
return rootElementList;
return null;
}
}, null);
viewer.setContentProvider(contentProvider);
viewer.setInput(input);
contentProvider.getElements(input);
IObservableSet knownElements = contentProvider.getKnownElements();
assertFalse(knownElements.contains(input));
assertEquals(new HashSet(Arrays.asList(rootElements)), knownElements);
}
public void testGetKnownElements_DisposedWithoutModificationOnContentProviderDispose() {
final Object input = new Object();
final IObservableList rootElementList = new WritableList(Collections
.singletonList("element"), null);
contentProvider = new ObservableListTreeContentProvider(
new IObservableFactory() {
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());
}
}
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