| /******************************************************************************* |
| * Copyright (c) 2005 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ui.navigator; |
| |
| import org.eclipse.jface.viewers.IContentProvider; |
| import org.eclipse.jface.viewers.StructuredViewer; |
| import org.eclipse.ui.navigator.internal.NavigatorContentService; |
| |
| |
| /** |
| * Provides a factory pattern for creating {@link INavigatorContentService}s |
| * for given viewer ids. |
| * |
| * <p> |
| * Clients may supply the viewer in {@link #createContentService(String, StructuredViewer) } |
| * or wait until the content provider is created by the service |
| * and set on the viewer. When the content provider is set, the |
| * viewer will call inputChanged(), and the content service |
| * will update its managed viewer accordingly. Therefore, each |
| * content service should be attached to at most one viewer. |
| * </p> |
| * |
| * <p> |
| * <strong>EXPERIMENTAL</strong>. This class or interface has been added as |
| * part of a work in progress. There is a guarantee neither that this API will |
| * work nor that it will remain the same. Please do not use this API without |
| * consulting with the Platform/UI team. |
| * </p> |
| * |
| * @since 3.2 |
| * |
| */ |
| public final class NavigatorContentServiceFactory { |
| |
| /** |
| * The singleton instance for creating NavigatorContentServices. |
| */ |
| public static final NavigatorContentServiceFactory INSTANCE = new NavigatorContentServiceFactory(); |
| |
| |
| /** |
| * Returns an instance of INavigatorContentService configured |
| * for the given id. Instances are not shared for the same |
| * viewerId. |
| * |
| * @param aViewerId The viewer id of interest |
| * @return An instance of INavigatorContentService configured for the given id. |
| */ |
| public INavigatorContentService createContentService(String aViewerId) { |
| return createContentService(aViewerId, null); |
| } |
| |
| /** |
| * Returns an instance of INavigatorContentService configured |
| * for the given id. Instances are not shared for the same |
| * viewerId. |
| * |
| * @param aViewerId The viewer id of interest |
| * @param aViewer The content service can use the given viewer to initialize content providers |
| * @return An instance of INavigatorContentService configured for the given id. |
| * @see IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, Object, Object) |
| */ |
| public INavigatorContentService createContentService(String aViewerId, StructuredViewer aViewer) { |
| if(aViewer == null) |
| return new NavigatorContentService(aViewerId); |
| return new NavigatorContentService(aViewerId, aViewer); |
| } |
| |
| } |