ResourceLoader.java :  » 6.0-JDK-Core » swing » javax » swing » text » html » parser » Java Open Source

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swing » javax » swing » text » html » parser » ResourceLoader.java
/*
 * Copyright 1999 Sun Microsystems, Inc.  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.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

package javax.swing.text.html.parser;

import java.io.InputStream;

/**
 * Simple class to load resources using the 1.2
 * security model.  Since the html support is loaded
 * lazily, it's resources are potentially fetched with
 * applet code in the call stack.  By providing this 
 * functionality in a class that is only built on 1.2,
 * reflection can be used from the code that is also
 * built on 1.1 to call this functionality (and avoid
 * the evils of preprocessing).  This functionality
 * is called from ParserDelegator.getResourceAsStream.
 *
 * @author  Timothy Prinzing
 * @version 1.13 05/05/07
 */
class ResourceLoader implements java.security.PrivilegedAction {

    ResourceLoader(String name) {
  this.name = name;
    }

    public Object run() {
  Object o = ParserDelegator.class.getResourceAsStream(name);
  return o;
    }

    public static InputStream getResourceAsStream(String name) {
  java.security.PrivilegedAction a = new ResourceLoader(name);
        return (InputStream) java.security.AccessController.doPrivileged(a);
    }

    private String name;
}
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