Showing the changes to java/pkg/sun/awt/image/ImageConsumerQueue.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 1997, 2002, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package sun.awt.image; | |
| 27 | + | |
| 28 | +import java.awt.image.ImageConsumer; | |
| 29 | + | |
| 30 | +class ImageConsumerQueue { | |
| 31 | + ImageConsumerQueue next; | |
| 32 | + | |
| 33 | + ImageConsumer consumer; | |
| 34 | + boolean interested; | |
| 35 | + | |
| 36 | + Object securityContext; | |
| 37 | + boolean secure; | |
| 38 | + | |
| 39 | + static ImageConsumerQueue removeConsumer(ImageConsumerQueue cqbase, | |
| 40 | + ImageConsumer ic, | |
| 41 | + boolean stillinterested) | |
| 42 | + { | |
| 43 | + ImageConsumerQueue cqprev = null; | |
| 44 | + for (ImageConsumerQueue cq = cqbase; cq != null; cq = cq.next) { | |
| 45 | + if (cq.consumer == ic) { | |
| 46 | + if (cqprev == null) { | |
| 47 | + cqbase = cq.next; | |
| 48 | + } else { | |
| 49 | + cqprev.next = cq.next; | |
| 50 | + } | |
| 51 | + cq.interested = stillinterested; | |
| 52 | + break; | |
| 53 | + } | |
| 54 | + cqprev = cq; | |
| 55 | + } | |
| 56 | + return cqbase; | |
| 57 | + } | |
| 58 | + | |
| 59 | + static boolean isConsumer(ImageConsumerQueue cqbase, ImageConsumer ic) { | |
| 60 | + for (ImageConsumerQueue cq = cqbase; cq != null; cq = cq.next) { | |
| 61 | + if (cq.consumer == ic) { | |
| 62 | + return true; | |
| 63 | + } | |
| 64 | + } | |
| 65 | + return false; | |
| 66 | + } | |
| 67 | + | |
| 68 | + ImageConsumerQueue(InputStreamImageSource src, ImageConsumer ic) { | |
| 69 | + consumer = ic; | |
| 70 | + interested = true; | |
| 71 | + // ImageReps do their own security at access time. | |
| 72 | + if (ic instanceof ImageRepresentation) { | |
| 73 | + ImageRepresentation ir = (ImageRepresentation) ic; | |
| 74 | + if (ir.image.source != src) { | |
| 75 | + throw new SecurityException("ImageRep added to wrong image source"); | |
| 76 | + } | |
| 77 | + secure = true; | |
| 78 | + } else { | |
| 79 | + SecurityManager security = System.getSecurityManager(); | |
| 80 | + if (security != null) { | |
| 81 | + securityContext = security.getSecurityContext(); | |
| 82 | + } else { | |
| 83 | + securityContext = null; | |
| 84 | + } | |
| 85 | + } | |
| 86 | + } | |
| 87 | + | |
| 88 | + public String toString() { | |
| 89 | + return ("[" + consumer + | |
| 90 | + ", " + (interested ? "" : "not ") + "interested" + | |
| 91 | + (securityContext != null ? ", " + securityContext : "") + | |
| 92 | + "]"); | |
| 93 | + } | |
| 94 | +} | |