| /******************************************************************************* |
| * Copyright (c) 2008, 2009 Oracle. 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: |
| * Oracle - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.jpt.jpa.ui.internal.navigator; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.jpt.common.ui.jface.DelegatingContentAndLabelProvider; |
| import org.eclipse.jpt.common.ui.jface.ItemLabelProvider; |
| import org.eclipse.jpt.common.ui.jface.ItemLabelProviderFactory; |
| import org.eclipse.jpt.jpa.core.JpaPlatform; |
| import org.eclipse.jpt.jpa.core.context.JpaContextNode; |
| import org.eclipse.jpt.jpa.ui.JptJpaUiPlugin; |
| import org.eclipse.jpt.jpa.ui.navigator.JpaNavigatorProvider; |
| |
| public class JpaNavigatorItemLabelProviderFactory |
| implements ItemLabelProviderFactory |
| { |
| /** |
| * Exactly *one* of these factories is created for each view that utilizes it. |
| * Therefore, as we delegate to the platform UI for each project, we should |
| * maintain the same multiplicity. That is, if there is a delegate for each |
| * platform UI, we should maintain *one* delegate for each view. |
| * |
| * Key: platform id, Value: delegate content provider factory |
| */ |
| private final Map<String, ItemLabelProviderFactory> delegates; |
| |
| |
| public JpaNavigatorItemLabelProviderFactory() { |
| super(); |
| this.delegates = new HashMap<String, ItemLabelProviderFactory>(); |
| } |
| |
| public ItemLabelProvider buildItemLabelProvider(Object item, DelegatingContentAndLabelProvider contentAndLabelProvider) { |
| ItemLabelProviderFactory delegate = getDelegate(item); |
| if (delegate != null) { |
| return delegate.buildItemLabelProvider(item, contentAndLabelProvider); |
| } |
| return null; |
| } |
| |
| |
| private ItemLabelProviderFactory getDelegate(Object element) { |
| if (! (element instanceof IAdaptable)) { |
| return null; |
| } |
| |
| JpaContextNode contextNode = (JpaContextNode) ((IAdaptable) element).getAdapter(JpaContextNode.class); |
| |
| if (contextNode == null) { |
| return null; |
| } |
| |
| JpaPlatform platform = contextNode.getJpaProject().getJpaPlatform(); |
| String platformId = platform.getId(); |
| if (delegates.containsKey(platformId)) { |
| return delegates.get(platformId); |
| } |
| JpaNavigatorProvider navigatorProvider = JptJpaUiPlugin.instance().getJpaNavigatorProvider(platform); |
| ItemLabelProviderFactory delegate = null; |
| if (navigatorProvider != null) { |
| delegate = navigatorProvider.getItemLabelProviderFactory(); |
| } |
| delegates.put(platformId, delegate); |
| return delegate; |
| } |
| } |