| /******************************************************************************* |
| * Copyright (c) 2007, 2010 BMW Car IT, Technische Universitaet Muenchen, 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: |
| * BMW Car IT - Initial API and implementation |
| * Technische Universitaet Muenchen - Major refactoring and extension |
| *******************************************************************************/ |
| package org.eclipse.emf.edapt.history.reconstruction.ui; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.eclipse.emf.common.util.URI; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.emf.ecore.presentation.EcoreEditor; |
| import org.eclipse.emf.edapt.common.ui.ModelSash; |
| import org.eclipse.emf.edapt.common.ui.SelectionUtils; |
| import org.eclipse.emf.edapt.common.ui.StructureTreeViewer; |
| import org.eclipse.emf.edapt.common.ui.SyncedMetamodelEditorViewBase; |
| import org.eclipse.emf.edapt.declaration.Parameter; |
| import org.eclipse.emf.edapt.history.reconstruction.CompositeReconstructorBase; |
| import org.eclipse.emf.edapt.history.reconstruction.EcoreBackwardReconstructor; |
| import org.eclipse.emf.edapt.history.reconstruction.EcoreForwardReconstructor; |
| import org.eclipse.emf.edapt.spi.history.Change; |
| import org.eclipse.emf.edapt.spi.history.ContentChange; |
| import org.eclipse.emf.edapt.spi.history.Delete; |
| import org.eclipse.emf.edapt.spi.history.NonDelete; |
| import org.eclipse.emf.edapt.spi.history.OperationChange; |
| import org.eclipse.emf.edapt.spi.history.OperationInstance; |
| import org.eclipse.emf.edapt.spi.history.PrimitiveChange; |
| import org.eclipse.emf.edapt.spi.history.Release; |
| import org.eclipse.emf.edapt.spi.history.ValueChange; |
| import org.eclipse.jface.viewers.DoubleClickEvent; |
| import org.eclipse.jface.viewers.IDoubleClickListener; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.StructuredSelection; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.widgets.Composite; |
| |
| /** |
| * View showing a reconstructed metamodel. |
| * |
| * @author herrmama |
| * @author $Author$ |
| * @version $Rev$ |
| * @levd.rating RED Rev: |
| */ |
| public class ReconstructionView extends SyncedMetamodelEditorViewBase { |
| |
| /** Identifier as in the plugin.xml */ |
| public static final String ID = ReconstructionView.class.getName(); |
| |
| /** Sash to show the model */ |
| private ModelSash sash; |
| |
| /** Reconstructor */ |
| private CompositeReconstructorBase reconstructor; |
| |
| /** {@inheritDoc} */ |
| @Override |
| protected void createContents(Composite parent) { |
| sash = new ModelSash(parent, SWT.NULL); |
| sash.getStructureViewer().addDoubleClickListener( |
| new IDoubleClickListener() { |
| |
| @Override |
| public void doubleClick(DoubleClickEvent event) { |
| final Object element = SelectionUtils |
| .getSelectedElement(event.getSelection(), Object.class); |
| if (element != null) { |
| final Object source = reconstructor.getMapping() |
| .resolveSource(element); |
| getEditor().setSelectionToViewer( |
| Collections.singletonList(source)); |
| } |
| } |
| |
| }); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void selectionChanged(IStructuredSelection structuredSelection) { |
| if (structuredSelection.size() == 1) { |
| final Object firstElement = structuredSelection.getFirstElement(); |
| if (firstElement instanceof Change) { |
| setChange((Change) firstElement); |
| } else if (firstElement instanceof Release) { |
| setRelease((Release) firstElement); |
| } |
| } |
| } |
| |
| /** Set release to be reconstructed. */ |
| public void setRelease(Release release) { |
| reconstructor = createReconstructor(release); |
| reconstructor.reconstruct(release, false); |
| final StructureTreeViewer structureViewer = sash.getStructureViewer(); |
| structureViewer.setInput(reconstructor.getResourceSet()); |
| structureViewer.expandToLevel(3); |
| } |
| |
| /** Set change to be reconstructed. */ |
| public void setChange(Change change) { |
| reconstructor = createReconstructor(change.getRelease()); |
| reconstructor.reconstruct(change, false); |
| final StructureTreeViewer structureViewer = sash.getStructureViewer(); |
| structureViewer.setInput(reconstructor.getResourceSet()); |
| structureViewer.expandToLevel(3); |
| |
| showAffectedElements(change); |
| } |
| |
| /** Show the elements affected by a change. */ |
| private void showAffectedElements(Change change) { |
| final StructureTreeViewer structureViewer = sash.getStructureViewer(); |
| if (change instanceof PrimitiveChange) { |
| if (change instanceof ContentChange) { |
| if (change instanceof Delete) { |
| final Delete delete = (Delete) change; |
| final EObject target = reconstructor.getMapping().resolveTarget( |
| delete.getTarget()); |
| structureViewer.setSelection( |
| new StructuredSelection(target), true); |
| } else if (change instanceof NonDelete) { |
| final NonDelete nonDelete = (NonDelete) change; |
| final EObject element = reconstructor.getMapping().resolveTarget( |
| nonDelete.getElement()); |
| structureViewer.setSelection(new StructuredSelection( |
| element), true); |
| } |
| } else if (change instanceof ValueChange) { |
| final ValueChange valueChange = (ValueChange) change; |
| final EObject element = reconstructor.getMapping().resolveTarget( |
| valueChange.getElement()); |
| if (element != null) { |
| /* |
| * don't try to select an element in case we couldn't resolve the target. |
| * Otherwise we will get a NPE. |
| */ |
| structureViewer.setSelection(new StructuredSelection(element), true); |
| } |
| } |
| } else if (change instanceof OperationChange) { |
| final OperationChange operationChange = (OperationChange) change; |
| final OperationInstance operationInstance = operationChange |
| .getOperation(); |
| final Parameter mainParameter = operationInstance.getOperation() |
| .getMainParameter(); |
| final Object value = operationInstance.getParameterValue(mainParameter |
| .getName()); |
| final Object resolved = reconstructor.getMapping().resolveTarget(value); |
| if (mainParameter.isMany()) { |
| structureViewer.setSelection(new StructuredSelection( |
| (List) resolved), true); |
| } else { |
| structureViewer.setSelection(new StructuredSelection(resolved), |
| true); |
| } |
| } |
| } |
| |
| /** |
| * Create either a backward or forward reconstructor depending on the |
| * proximity to the end or begin of history |
| */ |
| private CompositeReconstructorBase createReconstructor(Release release) { |
| final URI uri = URI.createURI("recons"); //$NON-NLS-1$ |
| final List<Release> releases = release.getHistory().getReleases(); |
| final int index = releases.indexOf(release); |
| if (index >= releases.size() - 2) { |
| return new EcoreBackwardReconstructor(uri); |
| } |
| return new EcoreForwardReconstructor(uri); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| protected void editorChanged(EcoreEditor oldEditor) { |
| if (getEditor() == null) { |
| sash.getStructureViewer().setInput(null); |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void setFocus() { |
| if (!sash.isDisposed()) { |
| sash.setFocus(); |
| } |
| } |
| } |