1 /*
   2  * Copyright (c) 2011, 2013, 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 test.com.sun.javafx.test;
  27 
  28 import java.lang.reflect.Method;
  29 
  30 import javafx.beans.property.SimpleStringProperty;
  31 import javafx.beans.value.ObservableStringValue;
  32 import javafx.beans.value.WritableObjectValue;
  33 
  34 import test.com.sun.javafx.test.binding.BindingProxy;
  35 import test.com.sun.javafx.test.binding.BindingProxyRefImpl;
  36 import test.com.sun.javafx.test.binding.ReflectionHelper;
  37 
  38 public final class BindingHelper {
  39     private BindingHelper() {
  40     }
  41 
  42     public static Object getPropertyModel(
  43             final Object bean,
  44             final PropertyReference propertyReference) {
  45         final Method modelMethod = ReflectionHelper.getMethod(
  46                                          bean.getClass(),
  47                                          propertyReference.getPropertyName()
  48                                              + "Property");
  49 
  50         return ReflectionHelper.invokeMethod(bean, modelMethod);
  51     }
  52 
  53     public static Object createVariable(final Object value) {
  54         final Class<?> typeClass = (value != null) ? value.getClass()
  55                                                    : Object.class;
  56         final Object variable = createVariable(typeClass);
  57         setWritableValue(typeClass, variable, value);
  58         return variable;
  59     }
  60 
  61     public static Object createVariable(final Class<?> typeClass) {
  62         final BindingProxy bindingProxy = getBindingProxy(typeClass);
  63         return bindingProxy.getVariableFactory().createVariable();
  64     }
  65 
  66     public static Object getObservableValue(final Class<?> typeClass,
  67                                             final Object observableValue) {
  68         final BindingProxy bindingProxy = getBindingProxy(typeClass);
  69         return bindingProxy.getObservableValueProxy().getValue(observableValue);
  70     }
  71 
  72     public static void setWritableValue(final Object writableValue,
  73                                         final Object value) {
  74         setWritableValue(value.getClass(), writableValue, value);
  75     }
  76     
  77     public static void setWritableValue(final Class<?> typeClass,
  78                                         final Object writableValue,
  79                                         final Object value) {
  80         final BindingProxy bindingProxy = getBindingProxy(typeClass);
  81         bindingProxy.getWritableValueProxy().setValue(writableValue, value);
  82     }
  83 
  84     public static void bind(final Object bean,
  85                             final PropertyReference propertyReference,
  86                             final Object observableValue) {
  87         final Object propertyModel = getPropertyModel(bean, propertyReference);
  88         bind(propertyReference.getValueType(), propertyModel, observableValue);
  89     }
  90 
  91     public static void bind(
  92             final Class<?> typeClass,
  93             final Object propertyModel,
  94             final Object observableValue) {
  95         final BindingProxy bindingProxy = getBindingProxy(typeClass);
  96         bindingProxy.getPropertyModelProxy().bind(propertyModel,
  97                                                   observableValue);
  98     }
  99 
 100     public static void unbind(final Object bean,
 101                               final PropertyReference propertyReference) {
 102         final Object propertyModel = getPropertyModel(bean, propertyReference);
 103         unbind(propertyReference.getValueType(), propertyModel);
 104     }
 105 
 106     public static void unbind(final Class<?> typeClass,
 107                               final Object propertyModel) {
 108         final BindingProxy bindingProxy = getBindingProxy(typeClass);
 109         bindingProxy.getPropertyModelProxy().unbind(propertyModel);
 110     }
 111 
 112     private static final BindingProxy[] BINDING_PROXY_LIST = {
 113         BindingProxyRefImpl.autoLookup("Boolean"),
 114         BindingProxyRefImpl.autoLookup("Integer"),
 115         BindingProxyRefImpl.autoLookup("Long"),
 116         BindingProxyRefImpl.autoLookup("Float"),
 117         BindingProxyRefImpl.autoLookup("Double"),
 118         // special handling of String
 119         // (WritableStringValue is not defined)
 120         new BindingProxyRefImpl(String.class,
 121                                 ObservableStringValue.class,
 122                                 WritableObjectValue.class,
 123                                 SimpleStringProperty.class,
 124                                 SimpleStringProperty.class),
 125         BindingProxyRefImpl.autoLookup("Object")
 126     };
 127 
 128     private static BindingProxy getBindingProxy(
 129             Class<?> typeClass) {
 130         if (typeClass.isPrimitive()) {
 131             typeClass = getWrapperClassForPrimitiveType(typeClass);
 132         }
 133 
 134         for (final BindingProxy proxy: BINDING_PROXY_LIST) {
 135             if (proxy.getTypeClass().isAssignableFrom(typeClass)) {
 136                 return proxy;
 137             }
 138         }
 139 
 140         // won't happen
 141         throw new RuntimeException();
 142     }
 143 
 144     private static Class<?> getWrapperClassForPrimitiveType(
 145             final Class<?> typeClass) {
 146         if (typeClass == boolean.class) {
 147             return Boolean.class;
 148         } else if (typeClass == int.class) {
 149             return Integer.class;
 150         } else if (typeClass == long.class) {
 151             return Long.class;
 152         } else if (typeClass == float.class) {
 153             return Float.class;
 154         } else if (typeClass == double.class) {
 155             return Double.class;
 156         } else {
 157             return null;
 158         }
 159     }
 160 }