PC Online 1997 October/PCO1097.ISO/FilesBBS/WIN95/IAVAZIP.EXE/DATA.Z/rt.jar/java/awt/Choice.class

Java Class File | 1997-05-20 | 4.9 KB | 217 lines

package java.awt;

import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.peer.ChoicePeer;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.Vector;

public class Choice extends Component implements ItemSelectable {
   Vector pItems;
   int selectedIndex = -1;
   transient ItemListener itemListener;
   private static final String base = "choice";
   private static int nameCounter;
   private static final long serialVersionUID = -4075310674757313071L;
   private int choiceSerializedDataVersion = 1;

   public Choice() {
      super.name = "choice" + nameCounter++;
      this.pItems = new Vector();
   }

   public void addNotify() {
      super.peer = ((Component)this).getToolkit().createChoice(this);
      super.addNotify();
   }

   public int getItemCount() {
      return this.countItems();
   }

   /** @deprecated */
   public int countItems() {
      return this.pItems.size();
   }

   public String getItem(int var1) {
      return (String)this.pItems.elementAt(var1);
   }

   public synchronized void add(String var1) {
      this.addItem(var1);
   }

   public synchronized void addItem(String var1) {
      if (var1 == null) {
         throw new NullPointerException("cannot add null item to Choice");
      } else {
         this.pItems.addElement(var1);
         ChoicePeer var2 = (ChoicePeer)super.peer;
         if (var2 != null) {
            var2.addItem(var1, this.pItems.size() - 1);
         }

         if (this.selectedIndex < 0) {
            this.select(0);
         }

      }
   }

   public synchronized void insert(String var1, int var2) {
      if (var2 < 0) {
         throw new IllegalArgumentException("index less than zero.");
      } else {
         int var3 = this.getItemCount();
         Vector var4 = new Vector();

         for(int var5 = var2; var5 < var3; ++var5) {
            var4.addElement(this.getItem(var2));
            this.remove(var2);
         }

         this.add(var1);

         for(int var6 = 0; var6 < var4.size(); ++var6) {
            this.add((String)var4.elementAt(var6));
         }

      }
   }

   public synchronized void remove(String var1) {
      int var2 = this.pItems.indexOf(var1);
      if (var2 < 0) {
         throw new IllegalArgumentException("item " + var1 + " not found in choice");
      } else {
         this.remove(var2);
      }
   }

   public synchronized void remove(int var1) {
      this.pItems.removeElementAt(var1);
      ChoicePeer var2 = (ChoicePeer)super.peer;
      if (var2 != null) {
         var2.remove(var1);
      }

      if (this.pItems.size() == 0) {
         this.selectedIndex = -1;
      } else {
         if (this.selectedIndex == var1) {
            this.select(0);
         }

      }
   }

   public synchronized void removeAll() {
      int var1 = this.getItemCount();

      for(int var2 = 0; var2 < var1; ++var2) {
         this.remove(0);
      }

   }

   public synchronized String getSelectedItem() {
      return this.selectedIndex >= 0 ? this.getItem(this.selectedIndex) : null;
   }

   public synchronized Object[] getSelectedObjects() {
      if (this.selectedIndex >= 0) {
         Object[] var1 = new Object[]{this.getItem(this.selectedIndex)};
         return var1;
      } else {
         return null;
      }
   }

   public int getSelectedIndex() {
      return this.selectedIndex;
   }

   public synchronized void select(int var1) {
      if (var1 >= this.pItems.size()) {
         throw new IllegalArgumentException("illegal Choice item position: " + var1);
      } else {
         if (this.pItems.size() > 0) {
            this.selectedIndex = var1;
            ChoicePeer var2 = (ChoicePeer)super.peer;
            if (var2 != null) {
               var2.select(var1);
            }
         }

      }
   }

   public synchronized void select(String var1) {
      int var2 = this.pItems.indexOf(var1);
      if (var2 >= 0) {
         this.select(var2);
      }

   }

   public synchronized void addItemListener(ItemListener var1) {
      this.itemListener = AWTEventMulticaster.add(this.itemListener, var1);
      super.newEventsOnly = true;
   }

   public synchronized void removeItemListener(ItemListener var1) {
      this.itemListener = AWTEventMulticaster.remove(this.itemListener, var1);
   }

   boolean eventEnabled(AWTEvent var1) {
      if (var1.id == 701) {
         return (super.eventMask & 512L) != 0L || this.itemListener != null;
      } else {
         return super.eventEnabled(var1);
      }
   }

   protected void processEvent(AWTEvent var1) {
      if (var1 instanceof ItemEvent) {
         this.processItemEvent((ItemEvent)var1);
      } else {
         super.processEvent(var1);
      }
   }

   protected void processItemEvent(ItemEvent var1) {
      if (this.itemListener != null) {
         this.itemListener.itemStateChanged(var1);
      }

   }

   protected String paramString() {
      return super.paramString() + ",current=" + this.getSelectedItem();
   }

   private void writeObject(ObjectOutputStream var1) throws IOException {
      var1.defaultWriteObject();
      AWTEventMulticaster.save(var1, "itemL", this.itemListener);
      var1.writeObject((Object)null);
   }

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

      Object var2;
      while((var2 = var1.readObject()) != null) {
         String var3 = ((String)var2).intern();
         if (var3 == "itemL") {
            this.addItemListener((ItemListener)var1.readObject());
         } else {
            var1.readObject();
         }
      }

   }
}