1 /* 2 * Copyright (c) 2011, 2017, 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 javafx.beans.property.adapter; 27 28 import com.sun.javafx.property.MethodHelper; 29 import com.sun.javafx.property.adapter.Disposer; 30 import com.sun.javafx.property.adapter.ReadOnlyPropertyDescriptor; 31 import javafx.beans.property.ReadOnlyBooleanPropertyBase; 32 33 import java.lang.reflect.InvocationTargetException; 34 import java.lang.reflect.UndeclaredThrowableException; 35 36 import java.security.AccessController; 37 import java.security.AccessControlContext; 38 import java.security.PrivilegedAction; 39 40 /** 41 * A {@code ReadOnlyJavaBeanBooleanProperty} provides an adapter between a regular 42 * read only Java Bean property of type {@code boolean} or {@code Boolean} and a JavaFX 43 * {@code ReadOnlyBooleanProperty}. It cannot be created directly, but a 44 * {@link ReadOnlyJavaBeanBooleanPropertyBuilder} has to be used. 45 * <p> 46 * As a minimum, the Java Bean class must implement a getter for the 47 * property. If the getter of an instance of this class is called, the property of 48 * the Java Bean is returned. If the Java Bean property is bound (i.e. it supports 49 * PropertyChangeListeners), this {@code ReadOnlyJavaBeanBooleanProperty} will be 50 * aware of changes in the Java Bean. Otherwise it can be notified about 51 * changes by calling {@link #fireValueChangedEvent()}. 52 * </p> 53 * <p> 54 * The Java Bean class must be declared public. If that class is in a named 55 * module, then the module must {@link Module#isOpen(String,Module) open} 56 * the containing package to at least the {@code javafx.base} module 57 * (or {@link Module#isExported(String) export} the containing package 58 * unconditionally). 59 * </p> 60 * 61 * @see javafx.beans.property.ReadOnlyBooleanProperty 62 * @see ReadOnlyJavaBeanBooleanPropertyBuilder 63 * @since JavaFX 2.1 64 */ 65 public final class ReadOnlyJavaBeanBooleanProperty extends ReadOnlyBooleanPropertyBase implements ReadOnlyJavaBeanProperty<Boolean> { 66 67 private final ReadOnlyPropertyDescriptor descriptor; 68 private final ReadOnlyPropertyDescriptor.ReadOnlyListener<Boolean> listener; 69 70 private final AccessControlContext acc = AccessController.getContext(); 71 72 ReadOnlyJavaBeanBooleanProperty(ReadOnlyPropertyDescriptor descriptor, Object bean) { 73 this.descriptor = descriptor; 74 this.listener = descriptor.new ReadOnlyListener<Boolean>(bean, this); 75 descriptor.addListener(listener); 76 Disposer.addRecord(this, new DescriptorListenerCleaner(descriptor, listener)); 77 } 78 79 /** 80 * {@inheritDoc} 81 * 82 * @throws UndeclaredThrowableException if calling the getter of the Java Bean 83 * property throws an {@code IllegalAccessException} or an 84 * {@code InvocationTargetException}. 85 */ 86 @Override 87 public boolean get() { 88 return AccessController.doPrivileged((PrivilegedAction<Boolean>) () -> { 89 try { 90 return (Boolean)MethodHelper.invoke(descriptor.getGetter(), getBean(), (Object[])null); 91 } catch (IllegalAccessException e) { 92 throw new UndeclaredThrowableException(e); 93 } catch (InvocationTargetException e) { 94 throw new UndeclaredThrowableException(e); 95 } 96 }, acc); 97 } 98 99 /** 100 * {@inheritDoc} 101 */ 102 @Override 103 public Object getBean() { 104 return listener.getBean(); 105 } 106 107 /** 108 * {@inheritDoc} 109 */ 110 @Override 111 public String getName() { 112 return descriptor.getName(); 113 } 114 115 /** 116 * {@inheritDoc} 117 */ 118 @Override 119 public void fireValueChangedEvent() { 120 super.fireValueChangedEvent(); 121 } 122 123 /** 124 * {@inheritDoc} 125 */ 126 @Override 127 public void dispose() { 128 descriptor.removeListener(listener); 129 } 130 }