| /******************************************************************************* |
| * Copyright (c) 2007, 2018 Borland Software Corporation and others. |
| * |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v20.html |
| * |
| * Contributors: |
| * Borland Software Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.m2m.internal.qvt.oml.emf.util.ui.provider; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.eclipse.emf.common.notify.AdapterFactory; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.emf.ecore.EPackage; |
| import org.eclipse.emf.edit.provider.IItemLabelProvider; |
| import org.eclipse.emf.edit.provider.ReflectiveItemProviderAdapterFactory; |
| import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider; |
| import org.eclipse.jface.viewers.ILabelProvider; |
| import org.eclipse.jface.viewers.ILabelProviderListener; |
| import org.eclipse.m2m.internal.qvt.oml.emf.util.ui.ExtendedEMFUtil; |
| import org.eclipse.swt.graphics.Image; |
| |
| |
| /** |
| * @author vrepeshko |
| */ |
| public class EMFLabelProvider implements ILabelProvider { |
| |
| private static class NullLabelProvider implements ILabelProvider { |
| |
| public static final NullLabelProvider INSTANCE = new NullLabelProvider(); |
| |
| private NullLabelProvider() {} |
| |
| public Image getImage(Object element) { |
| return null; |
| } |
| |
| public String getText(Object element) { |
| return ""; //$NON-NLS-1$ |
| } |
| |
| public void addListener(ILabelProviderListener listener) {} |
| |
| public void dispose() {} |
| |
| public boolean isLabelProperty(Object element, String property) { |
| return false; |
| } |
| |
| public void removeListener(ILabelProviderListener listener) {} |
| |
| } |
| |
| public Image getImage(Object element) { |
| return getLabelProvider(element).getImage(element); |
| } |
| |
| public String getText(Object element) { |
| return getLabelProvider(element).getText(element); |
| } |
| |
| private ILabelProvider getLabelProvider(Object element) { |
| if (element == null) { |
| return NullLabelProvider.INSTANCE; |
| } |
| ILabelProvider labelProvider = null; |
| if (element instanceof EObject) { |
| EPackage ePackage = ((EObject) element).eClass().getEPackage(); |
| labelProvider = (ILabelProvider) myLabelProvidersMap.get(ePackage); |
| if (labelProvider == null) { |
| labelProvider = new AdapterFactoryLabelProvider(getAdapterFactory(ePackage)); |
| myLabelProvidersMap.put(ePackage, labelProvider); |
| } |
| } else /* if (element != null) */{ |
| labelProvider = (ILabelProvider) myLabelProvidersMap.get(element.getClass()); |
| if (labelProvider == null) { |
| labelProvider = new AdapterFactoryLabelProvider(new ReflectiveItemProviderAdapterFactory()); |
| myLabelProvidersMap.put(element.getClass(), labelProvider); |
| } |
| } |
| return labelProvider; |
| } |
| |
| private static AdapterFactory getAdapterFactory(EPackage ePackage) { |
| return ExtendedEMFUtil.createComposedAdapterFactory(ExtendedEMFUtil.getAdapterFactories(ePackage, REQUIRED_CLASSES)); |
| } |
| |
| public void dispose() { |
| Set<ILabelProvider> providers = new HashSet<ILabelProvider>(myLabelProvidersMap.values()); |
| for (Iterator<?> iter = providers.iterator(); iter.hasNext();) { |
| ILabelProvider labelProvider = (ILabelProvider) iter.next(); |
| labelProvider.dispose(); |
| } |
| } |
| |
| public boolean isLabelProperty(Object element, String property) { |
| return true; |
| } |
| |
| public void addListener(ILabelProviderListener listener) {} |
| |
| public void removeListener(ILabelProviderListener listener) {} |
| |
| private final Map<Object, ILabelProvider> myLabelProvidersMap = new HashMap<Object, ILabelProvider>(); |
| |
| private static final Class<?>[] REQUIRED_CLASSES = { IItemLabelProvider.class }; |
| |
| } |
| |