1 /* 2 * Copyright (c) 2012, 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 package java.beans; 26 27 import java.util.ArrayList; 28 import java.util.Collections; 29 import java.util.EventListener; 30 import java.util.EventListenerProxy; 31 import java.util.HashMap; 32 import java.util.List; 33 import java.util.Map; 34 import java.util.Map.Entry; 35 import java.util.Set; 36 37 /** 38 * This is an abstract class that provides base functionality 39 * for the {@link PropertyChangeSupport PropertyChangeSupport} class 40 * and the {@link VetoableChangeSupport VetoableChangeSupport} class. 41 * 42 * @see PropertyChangeListenerMap 43 * @see VetoableChangeListenerMap 44 * 45 * @author Sergey A. Malenkov 46 */ 47 abstract class ChangeListenerMap<L extends EventListener> { 48 private Map<String, L[]> map; 49 50 /** 51 * Creates an array of listeners. 52 * This method can be optimized by using 53 * the same instance of the empty array 54 * when {@code length} is equal to {@code 0}. 55 * 56 * @param length the array length 57 * @return an array with specified length 58 */ 59 protected abstract L[] newArray(int length); 60 61 /** 62 * Creates a proxy listener for the specified property. 63 * | 1 /* 2 * Copyright (c) 2012, 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 package java.beans; 26 27 import java.util.ArrayList; 28 import java.util.Collections; 29 import java.util.EventListener; 30 import java.util.EventListenerProxy; 31 import java.util.HashMap; 32 import java.util.List; 33 import java.util.Map; 34 import java.util.Map.Entry; 35 import java.util.Set; 36 37 /** 38 * This is an abstract class that provides base functionality 39 * for the {@link PropertyChangeSupport PropertyChangeSupport} class 40 * and the {@link VetoableChangeSupport VetoableChangeSupport} class. 41 * 42 * @see PropertyChangeSupport.PropertyChangeListenerMap 43 * @see VetoableChangeSupport.VetoableChangeListenerMap 44 * 45 * @author Sergey A. Malenkov 46 */ 47 abstract class ChangeListenerMap<L extends EventListener> { 48 private Map<String, L[]> map; 49 50 /** 51 * Creates an array of listeners. 52 * This method can be optimized by using 53 * the same instance of the empty array 54 * when {@code length} is equal to {@code 0}. 55 * 56 * @param length the array length 57 * @return an array with specified length 58 */ 59 protected abstract L[] newArray(int length); 60 61 /** 62 * Creates a proxy listener for the specified property. 63 * |