--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/graphics/Resource.d	Sat Aug 09 17:00:02 2008 +0200
@@ -0,0 +1,101 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 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
+ *******************************************************************************/
+module dwt.graphics.Resource;
+
+import dwt.dwthelper.utils;
+
+import dwt.DWT;
+
+/**
+ * This class is the abstract superclass of all graphics resource objects.  
+ * Resources created by the application must be disposed.
+ * <p>
+ * IMPORTANT: This class is intended to be subclassed <em>only</em>
+ * within the DWT implementation. However, it has not been marked
+ * final to allow those outside of the DWT development team to implement
+ * patched versions of the class in order to get around specific
+ * limitations in advance of when those limitations can be addressed
+ * by the team.  Any class built using subclassing to access the internals
+ * of this class will likely fail to compile or run between releases and
+ * may be strongly platform specific. Subclassing should not be attempted
+ * without an intimate and detailed understanding of the workings of the
+ * hierarchy. No support is provided for user-written classes which are
+ * implemented as subclasses of this class.
+ * </p>
+ *
+ * @see #dispose
+ * @see #isDisposed
+ * 
+ * @since 3.1
+ */
+public abstract class Resource {
+    
+    /**
+     * the device where this resource was created
+     */
+    Device device;
+
+Resource() {
+}
+
+Resource(Device device) {
+    if (device is null) device = Device.getDevice();
+    if (device is null) DWT.error(DWT.ERROR_NULL_ARGUMENT);
+    this.device = device;
+}
+
+void destroy() {
+}
+
+/**
+ * Disposes of the operating system resources associated with
+ * this resource. Applications must dispose of all resources
+ * which they allocate.
+ */
+public void dispose() {
+    if (device is null) return;
+    if (device.isDisposed()) return;
+    destroy();
+    if (device.tracking) device.dispose_Object(this);
+    device = null;
+}
+
+/**
+ * Returns the <code>Device</code> where this resource was
+ * created.
+ *
+ * @return <code>Device</code> the device of the receiver
+ * 
+ * @since 3.2
+ */
+public Device getDevice() {
+    Device device = this.device;
+    if (device is null || isDisposed ()) DWT.error (DWT.ERROR_GRAPHIC_DISPOSED);
+    return device;
+}
+
+void init() {
+    if (device.tracking) device.new_Object(this);
+}
+
+/**
+ * Returns <code>true</code> if the resource has been disposed,
+ * and <code>false</code> otherwise.
+ * <p>
+ * This method gets the dispose state for the resource.
+ * When a resource has been disposed, it is an error to
+ * invoke any other method using the resource.
+ *
+ * @return <code>true</code> when the resource is disposed and <code>false</code> otherwise
+ */
+public abstract bool isDisposed();
+
+}