| /******************************************************************************* |
| * Copyright (c) 2006, 2010 Brad Reynolds. |
| * 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 |
| * Brad Reynolds - bug 116920 |
| * Ashley Cambrell - bug 198906 |
| * Matthew Hall - bug 194734 |
| * Ovidio Mallo - bug 270494 |
| *******************************************************************************/ |
| package org.eclipse.jface.tests.internal.databinding.viewers; |
| |
| import junit.framework.TestCase; |
| |
| import org.eclipse.core.databinding.observable.value.IObservableValue; |
| import org.eclipse.jface.databinding.conformance.util.ValueChangeEventTracker; |
| import org.eclipse.jface.databinding.viewers.ViewersObservables; |
| import org.eclipse.jface.viewers.ArrayContentProvider; |
| import org.eclipse.jface.viewers.IPostSelectionProvider; |
| import org.eclipse.jface.viewers.ISelectionProvider; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.StructuredSelection; |
| import org.eclipse.jface.viewers.TableViewer; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.widgets.Shell; |
| |
| /** |
| * Tests for SelectionProviderSingleSelectionObservableValue. |
| * |
| * @since 1.1 |
| */ |
| public class SelectionProviderSingleSelectionObservableValueTest extends |
| TestCase { |
| private IPostSelectionProvider selectionProvider; |
| |
| private TableViewer viewer; |
| |
| private static String[] model = new String[] { "0", "1" }; |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see junit.framework.TestCase#setUp() |
| */ |
| protected void setUp() throws Exception { |
| Shell shell = new Shell(); |
| viewer = new TableViewer(shell, SWT.NONE); |
| viewer.setContentProvider(new ArrayContentProvider()); |
| viewer.setInput(model); |
| selectionProvider = viewer; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see junit.framework.TestCase#tearDown() |
| */ |
| protected void tearDown() throws Exception { |
| Shell shell = viewer.getTable().getShell(); |
| if (!shell.isDisposed()) |
| shell.dispose(); |
| } |
| |
| public void testConstructorIllegalArgumentException() { |
| try { |
| ViewersObservables.observeSingleSelection(null); |
| fail(); |
| } catch (IllegalArgumentException e) { |
| } |
| } |
| |
| public void testSetValue() { |
| IObservableValue observable = ViewersObservables |
| .observeSingleSelection(selectionProvider); |
| |
| ValueChangeEventTracker listener = ValueChangeEventTracker |
| .observe(observable); |
| assertNull(observable.getValue()); |
| assertEquals(0, listener.count); |
| |
| observable.setValue(model[0]); |
| assertEquals(model[0], getSelectedElement(selectionProvider)); |
| assertEquals(model[0], observable.getValue()); |
| assertEquals(1, listener.count); |
| |
| observable.setValue(model[1]); |
| assertEquals(model[1], getSelectedElement(selectionProvider)); |
| assertEquals(model[1], observable.getValue()); |
| assertEquals(2, listener.count); |
| |
| observable.setValue(null); |
| assertTrue(selectionProvider.getSelection().isEmpty()); |
| assertEquals(3, listener.count); |
| } |
| |
| public void testSelectionChangesTracked() { |
| doTestSelectionChangesTracked(false); |
| } |
| |
| public void testPostSelectionChangesTracked() { |
| doTestSelectionChangesTracked(true); |
| } |
| |
| /** |
| * Asserts that when a selection is set on the viewer: |
| * <ul> |
| * <li>the selection is available in the observable</li> |
| * <li>Value change events are fired with appropriate diff values</li> |
| * </ul> |
| * |
| * @param postSelection |
| * <code>true</code> for observing the post selection, |
| * <code>false</code> for observing the normal selection. |
| */ |
| private void doTestSelectionChangesTracked(boolean postSelection) { |
| IObservableValue observable; |
| if (postSelection) { |
| observable = ViewersObservables |
| .observeSinglePostSelection(selectionProvider); |
| } else { |
| observable = ViewersObservables |
| .observeSingleSelection(selectionProvider); |
| } |
| |
| ValueChangeEventTracker listener = ValueChangeEventTracker |
| .observe(observable); |
| assertNull(observable.getValue()); |
| |
| selectionProvider.setSelection(new StructuredSelection(model[0])); |
| assertEquals(1, listener.count); |
| assertNull(listener.event.diff.getOldValue()); |
| assertEquals(model[0], listener.event.diff.getNewValue()); |
| assertEquals(observable, listener.event.getObservableValue()); |
| assertEquals(model[0], observable.getValue()); |
| |
| selectionProvider.setSelection(new StructuredSelection(model[1])); |
| assertEquals(2, listener.count); |
| assertEquals(model[0], listener.event.diff.getOldValue()); |
| assertEquals(model[1], listener.event.diff.getNewValue()); |
| assertEquals(observable, listener.event.getObservableValue()); |
| assertEquals(model[1], observable.getValue()); |
| |
| selectionProvider.setSelection(StructuredSelection.EMPTY); |
| assertEquals(3, listener.count); |
| assertEquals(model[1], listener.event.diff.getOldValue()); |
| assertNull(listener.event.diff.getNewValue()); |
| assertEquals(observable, listener.event.getObservableValue()); |
| assertEquals(null, observable.getValue()); |
| } |
| |
| public void testDispose() throws Exception { |
| IObservableValue observable = ViewersObservables |
| .observeSingleSelection(selectionProvider); |
| ValueChangeEventTracker listener = ValueChangeEventTracker |
| .observe(observable); |
| |
| selectionProvider.setSelection(new StructuredSelection(model[0])); |
| assertEquals(1, listener.count); |
| assertNull(listener.event.diff.getOldValue()); |
| assertEquals(model[0], listener.event.diff.getNewValue()); |
| assertEquals(observable, listener.event.getObservableValue()); |
| assertEquals(model[0], observable.getValue()); |
| |
| observable.dispose(); |
| selectionProvider.setSelection(new StructuredSelection(model[1])); |
| assertEquals(1, listener.count); |
| } |
| |
| private static Object getSelectedElement( |
| ISelectionProvider selectionProvider) { |
| return ((IStructuredSelection) selectionProvider.getSelection()) |
| .getFirstElement(); |
| } |
| } |