1 /*
   2  * Copyright (c) 2011, 2018, Oracle and/or its affiliates. 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.javafx.property.adapter;
  27 
  28 import java.lang.reflect.Method;
  29 import com.sun.javafx.reflect.ReflectUtil;
  30 
  31 /**
  32  */
  33 public class ReadOnlyJavaBeanPropertyBuilderHelper {
  34 
  35     private static final String IS_PREFIX = "is";
  36     private static final String GET_PREFIX = "get";
  37 
  38     private String propertyName;
  39     private Class<?> beanClass;
  40     private Object bean;
  41     private String getterName;
  42     private Method getter;
  43     private ReadOnlyPropertyDescriptor descriptor;
  44 
  45     public void name(String propertyName) {
  46         if ((propertyName == null)? this.propertyName != null : !propertyName.equals(this.propertyName)) {
  47             this.propertyName = propertyName;
  48             this.descriptor = null;
  49         }
  50     }
  51 
  52     public void beanClass(Class<?> beanClass) {
  53         if ((beanClass == null)? this.beanClass != null : !beanClass.equals(this.beanClass)) {
  54             ReflectUtil.checkPackageAccess(beanClass);
  55             this.beanClass = beanClass;
  56             this.descriptor = null;
  57         }
  58     }
  59 
  60     public void bean(Object bean) {
  61         this.bean = bean;
  62         if (bean != null) {
  63             Class<?> newClass = bean.getClass();
  64             if ((beanClass == null) || !beanClass.isAssignableFrom(newClass)) {
  65                 ReflectUtil.checkPackageAccess(newClass);
  66                 this.beanClass = bean.getClass();
  67                 this.descriptor = null;
  68             }
  69         }
  70     }
  71 
  72     public Object getBean() {
  73         return bean;
  74     }
  75 
  76     public void getterName(String getterName) {
  77         if ((getterName == null)? this.getterName != null : !getterName.equals(this.getterName)) {
  78             this.getterName = getterName;
  79             this.descriptor = null;
  80         }
  81     }
  82 
  83     public void getter(Method getter) {
  84         if ((getter == null)? this.getter != null : !getter.equals(this.getter)) {
  85             this.getter = getter;
  86             this.descriptor = null;
  87         }
  88     }
  89 
  90     public ReadOnlyPropertyDescriptor getDescriptor() throws NoSuchMethodException {
  91         if (descriptor == null) {
  92             if ((propertyName == null) || (bean == null)) {
  93                 throw new NullPointerException("Bean and property name have to be specified");
  94             }
  95             if (propertyName.isEmpty()) {
  96                 throw new IllegalArgumentException("Property name cannot be empty");
  97             }
  98             final String capitalizedName = ReadOnlyPropertyDescriptor.capitalizedName(propertyName);
  99             if (getter == null) {
 100                 if ((getterName != null) && !getterName.isEmpty()) {
 101                     getter = beanClass.getMethod(getterName);
 102                 } else {
 103                     try {
 104                         getter = beanClass.getMethod(IS_PREFIX + capitalizedName);
 105                     } catch (NoSuchMethodException e) {
 106                         getter = beanClass.getMethod(GET_PREFIX + capitalizedName);
 107                     }
 108                 }
 109             }
 110             descriptor = new ReadOnlyPropertyDescriptor(propertyName, beanClass, getter);
 111         }
 112         return descriptor;
 113     }
 114 
 115 }