| /******************************************************************************* |
| * Copyright (c) 2016 Chalmers | University of Gothenburg, rt-labs 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: |
| * Chalmers | University of Gothenburg and rt-labs - initial API and implementation and/or initial documentation |
| *******************************************************************************/ |
| package org.eclipse.capra.handler.emf.notification; |
| |
| import org.eclipse.emf.common.notify.Adapter; |
| import org.eclipse.emf.common.util.EList; |
| import org.eclipse.emf.ecore.resource.ResourceSet; |
| import org.eclipse.emf.edit.domain.IEditingDomainProvider; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.ui.IPartListener; |
| import org.eclipse.ui.IWorkbenchPage; |
| import org.eclipse.ui.IWorkbenchPart; |
| import org.eclipse.ui.PlatformUI; |
| import org.eclipse.ui.views.properties.PropertySheet; |
| |
| /** |
| * Listens to changes in the IWorkbenchPage. If a model editor is activated in |
| * the page, the listener registers a ModelChangeListener to it and unregisters |
| * it from the previous editor. |
| * |
| * @author Dusan Kalanj |
| * |
| */ |
| public class EditorListener implements IPartListener { |
| |
| private ModelChangeListener modelChangeListener = new ModelChangeListener(); |
| private ResourceSet previousResourceSet; |
| |
| /** |
| * The default constructor that registers the ModelChangeListener to the |
| * currently active part, if the part is an EMF editor. |
| */ |
| public EditorListener() { |
| IWorkbenchPage wp = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage(); |
| IEditingDomainProvider domainProvider = wp.getActivePart().getAdapter(IEditingDomainProvider.class); |
| |
| // If the editor that is active when the EditorListener is created is an |
| // EMF editor, directly register the ModelChangeListener. |
| if (domainProvider != null) { |
| ResourceSet resourceSet = domainProvider.getEditingDomain().getResourceSet(); |
| if (resourceSet != null) { |
| EList<Adapter> adapters = resourceSet.eAdapters(); |
| if (!adapters.contains(modelChangeListener)) |
| adapters.add(modelChangeListener); |
| previousResourceSet = resourceSet; |
| } |
| } |
| } |
| |
| @Override |
| public void partActivated(IWorkbenchPart part) { |
| |
| if (part instanceof PropertySheet) |
| return; |
| |
| IEditingDomainProvider domainProvider = part.getAdapter(IEditingDomainProvider.class); |
| ResourceSet currentResourceSet = null; |
| if (domainProvider != null) |
| currentResourceSet = domainProvider.getEditingDomain().getResourceSet(); |
| |
| if (previousResourceSet == currentResourceSet) |
| return; |
| |
| if (currentResourceSet != null) { |
| if (previousResourceSet != null) |
| // Remove ModelChangeListener from the previous ResourceSet. |
| previousResourceSet.eAdapters().remove(modelChangeListener); |
| previousResourceSet = currentResourceSet; |
| EList<Adapter> adapters = currentResourceSet.eAdapters(); |
| if (!adapters.contains(modelChangeListener)) |
| // Add ModelChangeListener to the current ResourceSet. |
| Display.getDefault().syncExec(() -> adapters.add(modelChangeListener)); |
| } |
| } |
| |
| @Override |
| public void partBroughtToTop(IWorkbenchPart part) { |
| } |
| |
| @Override |
| public void partClosed(IWorkbenchPart part) { |
| } |
| |
| @Override |
| public void partDeactivated(IWorkbenchPart part) { |
| } |
| |
| @Override |
| public void partOpened(IWorkbenchPart part) { |
| } |
| } |