J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | package sun.swing; |
| 26 | |
| 27 | import java.lang.reflect.Constructor; |
| 28 | import java.lang.reflect.Method; |
| 29 | import javax.swing.UIDefaults; |
| 30 | |
| 31 | /** |
| 32 | * SwingLazyValue is a copy of ProxyLazyValue that does not snapshot the |
| 33 | * AccessControlContext or use a doPrivileged to resolve the class name. |
| 34 | * It's intented for use in places in Swing where we need ProxyLazyValue, this |
| 35 | * should never be used in a place where the developer could supply the |
| 36 | * arguments. |
| 37 | * |
| 38 | */ |
| 39 | public class SwingLazyValue implements UIDefaults.LazyValue { |
| 40 | private String className; |
| 41 | private String methodName; |
| 42 | private Object[] args; |
| 43 | |
| 44 | public SwingLazyValue(String c) { |
| 45 | this(c, (String)null); |
| 46 | } |
| 47 | public SwingLazyValue(String c, String m) { |
| 48 | this(c, m, null); |
| 49 | } |
| 50 | public SwingLazyValue(String c, Object[] o) { |
| 51 | this(c, null, o); |
| 52 | } |
| 53 | public SwingLazyValue(String c, String m, Object[] o) { |
| 54 | className = c; |
| 55 | methodName = m; |
| 56 | if (o != null) { |
| 57 | args = (Object[])o.clone(); |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | public Object createValue(final UIDefaults table) { |
| 62 | try { |
| 63 | Class c; |
| 64 | Object cl; |
| 65 | c = Class.forName(className, true, null); |
| 66 | if (methodName != null) { |
| 67 | Class[] types = getClassArray(args); |
| 68 | Method m = c.getMethod(methodName, types); |
| 69 | return m.invoke(c, args); |
| 70 | } else { |
| 71 | Class[] types = getClassArray(args); |
| 72 | Constructor constructor = c.getConstructor(types); |
| 73 | return constructor.newInstance(args); |
| 74 | } |
| 75 | } catch(Exception e) { |
| 76 | // Ideally we would throw an exception, unfortunately |
| 77 | // often times there are errors as an initial look and |
| 78 | // feel is loaded before one can be switched. Perhaps a |
| 79 | // flag should be added for debugging, so that if true |
| 80 | // the exception would be thrown. |
| 81 | } |
| 82 | return null; |
| 83 | } |
| 84 | |
| 85 | private Class[] getClassArray(Object[] args) { |
| 86 | Class[] types = null; |
| 87 | if (args!=null) { |
| 88 | types = new Class[args.length]; |
| 89 | for (int i = 0; i< args.length; i++) { |
| 90 | /* PENDING(ges): At present only the primitive types |
| 91 | used are handled correctly; this should eventually |
| 92 | handle all primitive types */ |
| 93 | if (args[i] instanceof java.lang.Integer) { |
| 94 | types[i]=Integer.TYPE; |
| 95 | } else if (args[i] instanceof java.lang.Boolean) { |
| 96 | types[i]=Boolean.TYPE; |
| 97 | } else if (args[i] instanceof javax.swing.plaf.ColorUIResource) { |
| 98 | /* PENDING(ges) Currently the Reflection APIs do not |
| 99 | search superclasses of parameters supplied for |
| 100 | constructor/method lookup. Since we only have |
| 101 | one case where this is needed, we substitute |
| 102 | directly instead of adding a massive amount |
| 103 | of mechanism for this. Eventually this will |
| 104 | probably need to handle the general case as well. |
| 105 | */ |
| 106 | types[i]=java.awt.Color.class; |
| 107 | } else { |
| 108 | types[i]=args[i].getClass(); |
| 109 | } |
| 110 | } |
| 111 | } |
| 112 | return types; |
| 113 | } |
| 114 | } |