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/*******************************************************************************
* Copyright (c) 2006 Ruediger Herrmann 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:
* Ruediger Herrmann <rherrmann@innoopract.com> - initial API and implementation
*******************************************************************************/
package org.eclipse.jface.tests.viewers;
import junit.framework.TestCase;
import org.eclipse.core.runtime.ISafeRunnable;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jface.util.ILogger;
import org.eclipse.jface.util.ISafeRunnableRunner;
import org.eclipse.jface.util.Policy;
import org.eclipse.jface.util.SafeRunnable;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ComboViewer;
import org.eclipse.jface.viewers.IElementComparer;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.StructuredViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class ComboViewerComparerTest extends TestCase {
private Shell shell;
private StructuredViewer<TestElement,TestElement[]> viewer;
private static final class TestElement {
private final String name;
public TestElement(final String name) {
this.name = name;
}
public String getName() {
return name;
}
}
public void testSetSelection() {
viewer.setContentProvider(new ArrayContentProvider<String>(String.class));
viewer.setComparer(new IElementComparer() {
public boolean equals(final Object element1, final Object element2) {
TestElement testElement1 = (TestElement) element1;
TestElement testElement2 = (TestElement) element2;
return testElement1.getName().equals(testElement2.getName());
}
public int hashCode(final Object element) {
TestElement testElement = (TestElement) element;
return testElement.getName().hashCode();
}
});
viewer.setInput(new TestElement[] { new TestElement("a"),
new TestElement("b") });
// Select equal element with different identity
TestElement aElement = new TestElement("a");
viewer.setSelection(new StructuredSelection(aElement));
StructuredSelection sel = ((StructuredSelection) viewer.getSelection());
assertEquals(false, sel.isEmpty());
TestElement selectedElement = (TestElement) sel.getFirstElement();
assertEquals(aElement.getName(), selectedElement.getName());
}
protected void setUp() {
Policy.setLog(new ILogger() {
public void log(IStatus status) {
fail(status.getMessage());
}
});
SafeRunnable.setRunner(new ISafeRunnableRunner() {
public void run(ISafeRunnable code) {
try {
code.run();
} catch (Throwable th) {
throw new RuntimeException(th);
}
}
});
Display display = Display.getCurrent();
if (display == null) {
display = new Display();
}
shell = new Shell(display);
shell.setSize(500, 500);
shell.setLayout(new FillLayout());
viewer = createViewer(shell);
shell.open();
}
protected void tearDown() {
processEvents();
viewer = null;
if (shell != null) {
shell.dispose();
shell = null;
}
}
protected StructuredViewer<TestElement,TestElement[]> createViewer(final Shell parent) {
return new ComboViewer<TestElement,TestElement[]>(parent, SWT.NONE);
}
private void processEvents() {
if (shell != null && !shell.isDisposed()) {
Display display = shell.getDisplay();
if (display != null) {
while (display.readAndDispatch()) {
// loop until there are no more events to dispatch
}
}
}
}
}
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