| /******************************************************************************* |
| * Copyright (c) 2006 The Pampered Chef and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * The Pampered Chef - initial API and implementation |
| ******************************************************************************/ |
| |
| package org.eclipse.jface.examples.databinding.ducks; |
| |
| /** |
| * Encapsulates a single JavaBeans-style property |
| * |
| * @since 3.3 |
| */ |
| public class ReflectedProperty { |
| private String propertyName; |
| private ReflectedMethod getter; |
| private ReflectedMethod setter; |
| |
| /** |
| * Construct a ReflectedProperty on some object, given the property name. |
| * |
| * @param object The object |
| * @param propertyName The property name |
| */ |
| public ReflectedProperty(Object object, String propertyName) { |
| this.propertyName = propertyName; |
| getter = new ReflectedMethod(object, makeGetterName(propertyName), new Class[] {}); |
| if (!getter.exists()) { |
| getter = new ReflectedMethod(object, makeBooleanGetterName(propertyName), new Class[] {}); |
| if (!getter.exists()) { |
| throw new IllegalArgumentException("Cannot find getter for " + propertyName); |
| } |
| } |
| setter = new ReflectedMethod(object, makeSetterName(propertyName), new Class[] {getter.getType()}); |
| } |
| |
| private String makeBooleanGetterName(String propertyName) { |
| return "is" + capitalize(propertyName); |
| } |
| |
| private String makeSetterName(String propertyName) { |
| return "set" + capitalize(propertyName); |
| } |
| |
| private String makeGetterName(String propertyName) { |
| return "get" + capitalize(propertyName); |
| } |
| |
| private String capitalize(String string) { |
| return string.substring(0, 1).toUpperCase() + string.substring(1); |
| } |
| |
| /** |
| * Return the property's type. This is the same as the type returned by |
| * the getter. |
| * |
| * @return The property's data type. |
| */ |
| public Class getType() { |
| return getter.getType(); |
| } |
| |
| /** |
| * Return the property's value. |
| * |
| * @return The value in the property. |
| */ |
| public Object get() { |
| return getter.invoke(new Object[] {}); |
| } |
| |
| /** |
| * Set the property's value. If the property is read-only, the request |
| * is ignored. |
| * |
| * @param newValue The value to set. |
| */ |
| public void set(Object newValue) { |
| setter.invoke(new Object[] {newValue}); |
| } |
| |
| /** |
| * Returns if the property is read-only. |
| * |
| * @return false if the property has a setter; true otherwise. |
| */ |
| public boolean isReadOnly() { |
| return !setter.exists(); |
| } |
| |
| /** |
| * Returns the property's name. |
| * |
| * @return The property name. |
| */ |
| public String getPropertyName() { |
| return propertyName; |
| } |
| } |