S283 Planetary Science &n…he Search for Life DVD 2/DVD-ROM.iso/install/jre1_3/lib/rt.jar/java/beans/PropertyChangeSupport.class

Java Class File | 1979-12-31 | 3.0 KB | 180 lines

package java.beans;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.Hashtable;
import java.util.Vector;

public class PropertyChangeSupport implements Serializable {
   private transient Vector listeners;
   private Hashtable children;
   private Object source;
   private int propertyChangeSupportSerializedDataVersion = 2;
   static final long serialVersionUID = 6401253773779951803L;

   public PropertyChangeSupport(Object var1) {
      if (var1 == null) {
         throw new NullPointerException();
      } else {
         this.source = var1;
      }
   }

   public synchronized void addPropertyChangeListener(PropertyChangeListener var1) {
      if (this.listeners == null) {
         this.listeners = new Vector();
      }

      this.listeners.addElement(var1);
   }

   public synchronized void removePropertyChangeListener(PropertyChangeListener var1) {
      if (this.listeners != null) {
         this.listeners.removeElement(var1);
      }
   }

   public synchronized void addPropertyChangeListener(String var1, PropertyChangeListener var2) {
      if (this.children == null) {
         this.children = new Hashtable();
      }

      PropertyChangeSupport var3 = (PropertyChangeSupport)this.children.get(var1);
      if (var3 == null) {
         var3 = new PropertyChangeSupport(this.source);
         this.children.put(var1, var3);
      }

      var3.addPropertyChangeListener(var2);
   }

   public synchronized void removePropertyChangeListener(String var1, PropertyChangeListener var2) {
      if (this.children != null) {
         PropertyChangeSupport var3 = (PropertyChangeSupport)this.children.get(var1);
         if (var3 != null) {
            var3.removePropertyChangeListener(var2);
         }
      }
   }

   public void firePropertyChange(String var1, Object var2, Object var3) {
      if (var2 == null || var3 == null || !var2.equals(var3)) {
         Vector var4 = null;
         PropertyChangeSupport var5 = null;
         synchronized(this) {
            if (this.listeners != null) {
               var4 = (Vector)this.listeners.clone();
            }

            if (this.children != null && var1 != null) {
               var5 = (PropertyChangeSupport)this.children.get(var1);
            }
         }

         PropertyChangeEvent var7 = new PropertyChangeEvent(this.source, var1, var2, var3);
         if (var4 != null) {
            for(int var8 = 0; var8 < var4.size(); ++var8) {
               PropertyChangeListener var9 = (PropertyChangeListener)var4.elementAt(var8);
               var9.propertyChange(var7);
            }
         }

         if (var5 != null) {
            var5.firePropertyChange(var7);
         }

      }
   }

   public void firePropertyChange(String var1, int var2, int var3) {
      if (var2 != var3) {
         this.firePropertyChange(var1, new Integer(var2), new Integer(var3));
      }
   }

   public void firePropertyChange(String var1, boolean var2, boolean var3) {
      if (var2 != var3) {
         this.firePropertyChange(var1, new Boolean(var2), new Boolean(var3));
      }
   }

   public void firePropertyChange(PropertyChangeEvent var1) {
      Object var2 = var1.getOldValue();
      Object var3 = var1.getNewValue();
      String var4 = var1.getPropertyName();
      if (var2 == null || var3 == null || !var2.equals(var3)) {
         Vector var5 = null;
         PropertyChangeSupport var6 = null;
         synchronized(this) {
            if (this.listeners != null) {
               var5 = (Vector)this.listeners.clone();
            }

            if (this.children != null && var4 != null) {
               var6 = (PropertyChangeSupport)this.children.get(var4);
            }
         }

         if (var5 != null) {
            for(int var8 = 0; var8 < var5.size(); ++var8) {
               PropertyChangeListener var9 = (PropertyChangeListener)var5.elementAt(var8);
               var9.propertyChange(var1);
            }
         }

         if (var6 != null) {
            var6.firePropertyChange(var1);
         }

      }
   }

   public synchronized boolean hasListeners(String var1) {
      if (this.listeners != null && !this.listeners.isEmpty()) {
         return true;
      } else {
         if (this.children != null) {
            PropertyChangeSupport var2 = (PropertyChangeSupport)this.children.get(var1);
            if (var2 != null && var2.listeners != null) {
               return !var2.listeners.isEmpty();
            }
         }

         return false;
      }
   }

   private void writeObject(ObjectOutputStream var1) throws IOException {
      var1.defaultWriteObject();
      Vector var2 = null;
      synchronized(this) {
         if (this.listeners != null) {
            var2 = (Vector)this.listeners.clone();
         }
      }

      if (var2 != null) {
         for(int var4 = 0; var4 < var2.size(); ++var4) {
            PropertyChangeListener var5 = (PropertyChangeListener)var2.elementAt(var4);
            if (var5 instanceof Serializable) {
               var1.writeObject(var5);
            }
         }
      }

      var1.writeObject((Object)null);
   }

   private void readObject(ObjectInputStream var1) throws ClassNotFoundException, IOException {
      var1.defaultReadObject();

      Object var2;
      while(null != (var2 = var1.readObject())) {
         this.addPropertyChangeListener((PropertyChangeListener)var2);
      }

   }
}