| /* |
| * Copyright (c) 1997, 2002, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.awt.image; |
| |
| import java.awt.image.ImageConsumer; |
| |
| class ImageConsumerQueue { |
| ImageConsumerQueue next; |
| |
| ImageConsumer consumer; |
| boolean interested; |
| |
| Object securityContext; |
| boolean secure; |
| |
| static ImageConsumerQueue removeConsumer(ImageConsumerQueue cqbase, |
| ImageConsumer ic, |
| boolean stillinterested) |
| { |
| ImageConsumerQueue cqprev = null; |
| for (ImageConsumerQueue cq = cqbase; cq != null; cq = cq.next) { |
| if (cq.consumer == ic) { |
| if (cqprev == null) { |
| cqbase = cq.next; |
| } else { |
| cqprev.next = cq.next; |
| } |
| cq.interested = stillinterested; |
| break; |
| } |
| cqprev = cq; |
| } |
| return cqbase; |
| } |
| |
| static boolean isConsumer(ImageConsumerQueue cqbase, ImageConsumer ic) { |
| for (ImageConsumerQueue cq = cqbase; cq != null; cq = cq.next) { |
| if (cq.consumer == ic) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| ImageConsumerQueue(InputStreamImageSource src, ImageConsumer ic) { |
| consumer = ic; |
| interested = true; |
| // ImageReps do their own security at access time. |
| if (ic instanceof ImageRepresentation) { |
| ImageRepresentation ir = (ImageRepresentation) ic; |
| if (ir.image.source != src) { |
| throw new SecurityException("ImageRep added to wrong image source"); |
| } |
| secure = true; |
| } else { |
| SecurityManager security = System.getSecurityManager(); |
| if (security != null) { |
| securityContext = security.getSecurityContext(); |
| } else { |
| securityContext = null; |
| } |
| } |
| } |
| |
| public String toString() { |
| return ("[" + consumer + |
| ", " + (interested ? "" : "not ") + "interested" + |
| (securityContext != null ? ", " + securityContext : "") + |
| "]"); |
| } |
| } |