| /******************************************************************************* |
| * Copyright (c) 2004, 2006 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.jface.resource; |
| |
| import org.eclipse.swt.graphics.Device; |
| |
| /** |
| * Instances of this class can allocate and dispose SWT resources. Each |
| * instance describes a particular resource (such as a Color, Font, or Image) |
| * and can create and destroy that resource on demand. DeviceResourceDescriptors |
| * are managed by a ResourceRegistry. |
| * |
| * @see org.eclipse.jface.resource.ResourceManager |
| * |
| * @since 3.1 |
| */ |
| public abstract class DeviceResourceDescriptor { |
| /** |
| * Creates the resource described by this descriptor |
| * |
| * @since 3.1 |
| * |
| * @param device the Device on which to allocate the resource |
| * @return the newly allocated resource (not null) |
| * @throws DeviceResourceException if unable to allocate the resource |
| */ |
| public abstract Object createResource(Device device); |
| |
| /** |
| * Undoes everything that was done by a previous call to create(...), given |
| * the object that was returned by create(...). |
| * |
| * @since 3.1 |
| * |
| * @param previouslyCreatedObject an object that was returned by an equal |
| * descriptor in a previous call to createResource(...). |
| */ |
| public abstract void destroyResource(Object previouslyCreatedObject); |
| } |