components/visual-panels/core/src/java/util/com/oracle/solaris/vp/util/common/propinfo/ReflectionPropInfo.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/components/visual-panels/core/src/java/util/com/oracle/solaris/vp/util/common/propinfo/ReflectionPropInfo.java Thu May 24 04:16:47 2012 -0400
@@ -0,0 +1,139 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright (c) 2008, 2012, Oracle and/or its affiliates. All rights reserved.
+ */
+
+package com.oracle.solaris.vp.util.common.propinfo;
+
+import java.beans.*;
+import java.lang.reflect.Method;
+import java.util.*;
+
+/**
+ * The {@code ReflectionPropInfo<T>} class uses reflection to manage a
+ * Java-Beans-style property of an object.
+ */
+public class ReflectionPropInfo<M, T> extends AbstractPropInfo<M, T> {
+ //
+ // Instance data
+ //
+
+ private String propName;
+ private Map<String, PropertyDescriptor> map =
+ new HashMap<String, PropertyDescriptor>();
+
+ //
+ // Constructors
+ //
+
+ public ReflectionPropInfo(String label, String description,
+ boolean sortable, boolean editable, String propName) {
+
+ super(label, description, sortable, editable);
+ this.propName = propName;
+ }
+
+ //
+ // PropInfo methods
+ //
+
+ @Override
+ @SuppressWarnings({"unchecked"})
+ public T getValue(M o) {
+ PropertyDescriptor descriptor = getPropertyDescriptor(o);
+ if (descriptor != null) {
+ Method method = descriptor.getReadMethod();
+ try {
+ return (T)method.invoke(o);
+ } catch (Throwable e) {
+ // XXX Log
+// System.err.printf("%s\n", e.getMessage());
+ }
+ }
+
+ return null;
+ }
+
+ @Override
+ public boolean isEditable(M o) {
+ boolean editable = super.isEditable(o);
+
+ if (editable) {
+ PropertyDescriptor descriptor = getPropertyDescriptor(o);
+ if (descriptor != null) {
+ editable = descriptor.getWriteMethod() != null;
+ }
+ }
+
+ return editable;
+ }
+
+ @Override
+ public void setValue(M o, T value) {
+ PropertyDescriptor descriptor = getPropertyDescriptor(o);
+ if (descriptor != null) {
+ Method method = descriptor.getWriteMethod();
+ try {
+ method.invoke(o, value);
+ } catch (Throwable e) {
+ // XXX Log
+// System.err.printf("%s\n", e.getMessage());
+ }
+ }
+ }
+
+ //
+ // ReflectionPropInfo methods
+ //
+
+ public String getPropertyName() {
+ return propName;
+ }
+
+ //
+ // Private methods
+ //
+
+ private PropertyDescriptor getPropertyDescriptor(M o) {
+ synchronized (map) {
+ Class c = o.getClass();
+ String cName = o.getClass().getName();
+ if (map.containsKey(cName)) {
+ return map.get(cName);
+ }
+
+ try {
+ BeanInfo info = Introspector.getBeanInfo(c);
+ for (PropertyDescriptor d : info.getPropertyDescriptors()) {
+ if (d.getName().equals(propName)) {
+ map.put(cName, d);
+ return d;
+ }
+ }
+ } catch (IntrospectionException e) {
+ }
+
+ return null;
+ }
+ }
+}