/*
* @(#)ImageConsumerQueue.java 1.13 06/10/10
*
* Copyright 1990-2008 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program 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.
*
* This program 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 at /legal/license.txt).
*
* 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 Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.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;
SecurityManager security = System.getSecurityManager();
if (security != null) {
securityContext = security.getSecurityContext();
} else {
securityContext = null;
}
}
public String toString() {
return ("[" + consumer +
", " + (interested ? "" : "not ") + "interested" +
(securityContext != null ? ", " + securityContext : "") +
"]");
}
}