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 | } | ||