1 /*
   2  * Copyright (c) 2010, 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 javafx.binding;
  27 
  28 import javafx.beans.InvalidationListener;
  29 import javafx.beans.property.ObjectProperty;
  30 import javafx.beans.property.SimpleObjectProperty;
  31 import javafx.beans.property.SimpleStringProperty;
  32 import javafx.beans.property.StringProperty;
  33 
  34 public class Variable {
  35     public int numChangedListenersForNext = 0;
  36     public int numChangedListenersForName = 0;
  37 
  38     public Variable(String name) {
  39         this.name.set(name);
  40     }
  41 
  42     private final ObjectProperty<Object> next = new SimpleObjectProperty<Object>() {
  43         @Override
  44         public void addListener(InvalidationListener listener) {
  45             super.addListener(listener);
  46             numChangedListenersForNext++;
  47         }
  48         @Override
  49         public void removeListener(InvalidationListener listener) {
  50             super.removeListener(listener);
  51             numChangedListenersForNext = Math.max(0, numChangedListenersForNext-1);
  52         }
  53     };
  54     public Object getNext() {return next.get();}
  55     public void setNext(Object value) {next.set(value);}
  56     public ObjectProperty<Object> nextProperty() {return next;}
  57 
  58     
  59     
  60     private final StringProperty name = new SimpleStringProperty() {
  61         @Override
  62         public void addListener(InvalidationListener listener) {
  63             super.addListener(listener);
  64             numChangedListenersForName++;
  65         }
  66         @Override
  67         public void removeListener(InvalidationListener listener) {
  68             super.removeListener(listener);
  69             numChangedListenersForName = Math.max(0, numChangedListenersForName-1);
  70         }
  71     };
  72     public final String getName() {return name.get();}
  73     public void setName(String value) {name.set(value);}
  74     public StringProperty nameProperty() {return name;}
  75     
  76     @Override public String toString() {return name.get();}
  77 }