| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.openapi.options.binding; |
| |
| import java.beans.BeanInfo; |
| import java.beans.IntrospectionException; |
| import java.beans.Introspector; |
| import java.beans.PropertyDescriptor; |
| import java.lang.reflect.Field; |
| |
| /** |
| * @author Dmitry Avdeev |
| */ |
| public abstract class BeanValueAccessor extends ValueAccessor { |
| |
| public static BeanValueAccessor createAccessor(Object bean, final String propertyName) { |
| Field[] fields = bean.getClass().getFields(); |
| for (final Field field : fields) { |
| if (field.getName().equals(propertyName)) { |
| return new BeanValueAccessor(bean, propertyName) { |
| protected Object doGetValue() throws IllegalAccessException { |
| return field.get(myBean); |
| } |
| |
| protected void doSetValue(Object value) throws IllegalAccessException { |
| field.set(myBean, value); |
| } |
| |
| @Override |
| public Class getType() { |
| return field.getType(); |
| } |
| }; |
| } |
| } |
| try { |
| BeanInfo beanInfo = Introspector.getBeanInfo(bean.getClass()); |
| for (final PropertyDescriptor descriptor : beanInfo.getPropertyDescriptors()) { |
| if (descriptor.getName().equals(propertyName)) { |
| return new BeanValueAccessor(bean, propertyName) { |
| @Override |
| protected Object doGetValue() throws Exception { |
| return descriptor.getReadMethod().invoke(myBean); |
| } |
| |
| @Override |
| protected void doSetValue(Object value) throws Exception { |
| descriptor.getWriteMethod().invoke(myBean, value); |
| } |
| |
| @Override |
| public Class getType() { |
| return descriptor.getPropertyType(); |
| } |
| }; |
| } |
| } |
| throw new IllegalArgumentException("Property " + propertyName + " not found in " + bean.getClass()); |
| } |
| catch (IntrospectionException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| protected final Object myBean; |
| protected final String myPropertyName; |
| |
| public BeanValueAccessor(Object bean, String propertyName) { |
| myBean = bean; |
| myPropertyName = propertyName; |
| } |
| |
| public Object getValue() { |
| try { |
| return doGetValue(); |
| } |
| catch (Exception e) { |
| throw new RuntimeException("Cannot access property " + myPropertyName, e); |
| } |
| } |
| |
| public void setValue(Object value) { |
| try { |
| doSetValue(value); |
| } |
| catch (Exception e) { |
| throw new RuntimeException("Cannot access property " + myPropertyName, e); |
| } |
| } |
| |
| protected abstract Object doGetValue() throws Exception; |
| |
| protected abstract void doSetValue(Object value) throws Exception; |
| } |