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

Java Class File | 1979-12-31 | 3.1 KB | 172 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 VetoableChangeSupport implements Serializable {
   private transient Vector listeners;
   private Hashtable children;
   private Object source;
   private int vetoableChangeSupportSerializedDataVersion = 2;
   static final long serialVersionUID = -5090210921595982017L;

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

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

      this.listeners.addElement(var1);
   }

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

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

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

      var3.addVetoableChangeListener(var2);
   }

   public synchronized void removeVetoableChangeListener(String var1, VetoableChangeListener var2) {
      if (this.children != null) {
         VetoableChangeSupport var3 = (VetoableChangeSupport)this.children.get(var1);
         if (var3 != null) {
            var3.removeVetoableChangeListener(var2);
         }
      }
   }

   public void fireVetoableChange(String var1, Object var2, Object var3) throws PropertyVetoException {
      if (this.listeners != null || this.children != null) {
         PropertyChangeEvent var4 = new PropertyChangeEvent(this.source, var1, var2, var3);
         this.fireVetoableChange(var4);
      }
   }

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

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

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

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

         if (this.listeners != null) {
            try {
               for(int var8 = 0; var8 < var5.size(); ++var8) {
                  VetoableChangeListener var15 = (VetoableChangeListener)var5.elementAt(var8);
                  var15.vetoableChange(var1);
               }
            } catch (PropertyVetoException var12) {
               var1 = new PropertyChangeEvent(this.source, var4, var3, var2);

               for(int var9 = 0; var9 < var5.size(); ++var9) {
                  try {
                     VetoableChangeListener var10 = (VetoableChangeListener)var5.elementAt(var9);
                     var10.vetoableChange(var1);
                  } catch (PropertyVetoException var11) {
                  }
               }

               throw var12;
            }
         }

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

      }
   }

   public synchronized boolean hasListeners(String var1) {
      if (this.listeners != null && !this.listeners.isEmpty()) {
         return true;
      } else {
         if (this.children != null) {
            VetoableChangeSupport var2 = (VetoableChangeSupport)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) {
            VetoableChangeListener var5 = (VetoableChangeListener)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.addVetoableChangeListener((VetoableChangeListener)var2);
      }

   }
}