| /******************************************************************************* |
| * Copyright (c) 2013, 2020 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * |
| *******************************************************************************/ |
| package org.eclipse.wst.xml.ui.internal; |
| |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.swt.graphics.Image; |
| |
| public class ImageDescriptorRegistry { |
| |
| private static final Map<ImageDescriptor, Image> registry = new HashMap<>(2); |
| |
| public static synchronized Image getImage(ImageDescriptor descriptor) { |
| if (descriptor == null) { |
| descriptor = ImageDescriptor.getMissingImageDescriptor(); |
| } |
| |
| Image image = registry.get(descriptor); |
| if (image != null) { |
| return image; |
| } |
| image = descriptor.createImage(); |
| if (image != null) { |
| registry.put(descriptor, image); |
| } |
| return image; |
| } |
| |
| public static void dispose() { |
| for (Iterator<Image> it = registry.values().iterator(); it.hasNext();) { |
| it.next().dispose(); |
| } |
| registry.clear(); |
| } |
| |
| } |