| /******************************************************************************* |
| * Copyright (c) 2006, 2018 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jface.text.tests; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import org.junit.Test; |
| |
| import org.eclipse.core.commands.ExecutionException; |
| import org.eclipse.core.commands.operations.AbstractOperation; |
| import org.eclipse.core.commands.operations.IUndoableOperation; |
| import org.eclipse.core.commands.operations.OperationHistoryFactory; |
| |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| |
| import org.eclipse.text.undo.DocumentUndoEvent; |
| import org.eclipse.text.undo.DocumentUndoManager; |
| |
| import org.eclipse.jface.text.Document; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.IUndoManager; |
| import org.eclipse.jface.text.TextViewerUndoManager; |
| |
| /** |
| * Tests for TextViewerUndoManager. |
| * |
| * @since 3.2 |
| */ |
| public class TextViewerUndoManagerTest extends AbstractUndoManagerTest { |
| |
| @Override |
| protected IUndoManager createUndoManager(int maxUndoLevel) { |
| return new TextViewerUndoManager(maxUndoLevel); |
| } |
| |
| //--- DocumentUndoManager only --- |
| |
| public void internalTestTransferNonTextOp(final boolean isUndoable) throws Exception { |
| Object context= new Object(); |
| DocumentUndoManager tempUndoManager= new DocumentUndoManager(new Document()); |
| tempUndoManager.connect(context); |
| |
| IUndoableOperation operation= new AbstractOperation("") { |
| @Override |
| public boolean canUndo() { |
| return isUndoable; |
| } |
| @Override |
| public IStatus execute(IProgressMonitor monitor, IAdaptable info) throws ExecutionException { |
| return Status.OK_STATUS; |
| } |
| @Override |
| public IStatus redo(IProgressMonitor monitor, IAdaptable info) throws ExecutionException { |
| return Status.OK_STATUS; |
| } |
| @Override |
| public IStatus undo(IProgressMonitor monitor, IAdaptable info) throws ExecutionException { |
| return Status.OK_STATUS; |
| } |
| }; |
| operation.addContext(tempUndoManager.getUndoContext()); |
| OperationHistoryFactory.getOperationHistory().add(operation); |
| |
| assertEquals(isUndoable, tempUndoManager.undoable()); |
| |
| final DocumentUndoManager undoManager= new DocumentUndoManager(new Document()); |
| Object newContext= new Object(); |
| undoManager.connect(newContext); |
| |
| undoManager.addDocumentUndoListener(event -> fail()); |
| |
| undoManager.transferUndoHistory(tempUndoManager); |
| tempUndoManager.disconnect(context); |
| |
| assertEquals(isUndoable, undoManager.undoable()); |
| undoManager.undo(); |
| assertFalse(undoManager.undoable()); |
| |
| undoManager.disconnect(newContext); |
| } |
| |
| @Test |
| public void testTransferNonUndoableNonTextOp() throws Exception { |
| internalTestTransferNonTextOp(false); |
| } |
| |
| @Test |
| public void testTransferUndoableNonTextOp() throws Exception { |
| internalTestTransferNonTextOp(true); |
| } |
| |
| @Test |
| public void testCanUndo() throws Exception { |
| IDocument doc= new Document(); |
| final DocumentUndoManager undoManager= new DocumentUndoManager(doc); |
| Object context= new Object(); |
| undoManager.connect(context); |
| |
| undoManager.addDocumentUndoListener(event -> { |
| if (event.getEventType() == DocumentUndoEvent.ABOUT_TO_UNDO) |
| assertTrue(undoManager.undoable()); |
| else if (event.getEventType() == DocumentUndoEvent.UNDONE) |
| assertFalse(undoManager.undoable()); |
| }); |
| |
| doc.set("foo"); |
| |
| assertTrue(undoManager.undoable()); |
| undoManager.undo(); |
| assertFalse(undoManager.undoable()); |
| |
| undoManager.disconnect(context); |
| } |
| |
| } |