/* * 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 : "") + "]"); }}
/*
* 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 : "") +
"]");
}
}