1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 package java.beans; 18 19 import java.awt.Component; 20 import java.awt.Graphics; 21 import java.awt.Rectangle; 22 import java.util.ArrayList; 23 import java.util.Iterator; 24 import java.util.List; 25 26 import org.apache.harmony.beans.internal.nls.Messages; 27 28 public class PropertyEditorSupport implements PropertyEditor { 29 30 Object source = null; 31 32 List<PropertyChangeListener> listeners = new ArrayList<PropertyChangeListener>(); 33 34 Object oldValue = null; 35 36 Object newValue = null; 37 38 public PropertyEditorSupport(Object source) { 39 if (source == null) { 40 throw new NullPointerException(Messages.getString("beans.0C")); //$NON-NLS-1$ 41 } 42 this.source = source; 43 } 44 45 public PropertyEditorSupport() { 46 source = this; 47 } 48 49 public void paintValue(Graphics gfx, Rectangle box) { 50 } 51 52 public void setAsText(String text) throws IllegalArgumentException { 53 if (newValue instanceof String) { 54 setValue(text); 55 } else { 56 throw new IllegalArgumentException(text); 57 } 58 } 59 60 public String[] getTags() { 61 return null; 62 } 63 64 public String getJavaInitializationString() { 65 return "???"; //$NON-NLS-1$ 66 } 67 68 public String getAsText() { 69 return newValue == null ? "null" : newValue.toString(); //$NON-NLS-1$ 70 } 71 72 public void setValue(Object value) { 73 this.oldValue = this.newValue; 74 this.newValue = value; 75 firePropertyChange(); 76 } 77 78 public Object getValue() { 79 return newValue; 80 } 81 82 public void setSource(Object source) { 83 if (source == null) { 84 throw new NullPointerException(Messages.getString("beans.0C")); //$NON-NLS-1$ 85 } 86 this.source = source; 87 } 88 89 public Object getSource() { 90 return source; 91 } 92 93 public synchronized void removePropertyChangeListener( 94 PropertyChangeListener listener) { 95 if (listeners != null) { 96 listeners.remove(listener); 97 } 98 } 99 100 public synchronized void addPropertyChangeListener( 101 PropertyChangeListener listener) { 102 listeners.add(listener); 103 } 104 105 public Component getCustomEditor() { 106 return null; 107 } 108 109 public boolean supportsCustomEditor() { 110 return false; 111 } 112 113 public boolean isPaintable() { 114 return false; 115 } 116 117 public void firePropertyChange() { 118 if (listeners.size() > 0) { 119 PropertyChangeEvent event = new PropertyChangeEvent(source, null, 120 oldValue, newValue); 121 Iterator<PropertyChangeListener> iterator = listeners.iterator(); 122 123 while (iterator.hasNext()) { 124 PropertyChangeListener listener = iterator.next(); 125 listener.propertyChange(event); 126 } 127 } 128 } 129 } 130
