/[classpath]/classpath/java/awt/Container.java
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Diff of /classpath/java/awt/Container.java

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revision 1.15 by mkoch, Sat Feb 15 09:29:17 2003 UTC revision 1.16 by mkoch, Sun Mar 2 14:42:13 2003 UTC
# Line 45  import java.awt.peer.ComponentPeer; Line 45  import java.awt.peer.ComponentPeer;
45  import java.awt.peer.ContainerPeer;  import java.awt.peer.ContainerPeer;
46  import java.awt.peer.LightweightPeer;  import java.awt.peer.LightweightPeer;
47  import java.beans.PropertyChangeListener;  import java.beans.PropertyChangeListener;
48    import java.beans.PropertyChangeSupport;
49  import java.io.PrintStream;  import java.io.PrintStream;
50  import java.io.PrintWriter;  import java.io.PrintWriter;
51  import java.io.Serializable;  import java.io.Serializable;
# Line 89  public class Container extends Component Line 90  public class Container extends Component
90    
91    /* Anything else is non-serializable, and should be declared "transient". */    /* Anything else is non-serializable, and should be declared "transient". */
92    transient ContainerListener containerListener;    transient ContainerListener containerListener;
93      transient PropertyChangeSupport changeSupport;
94    
95    /**    /**
96     * Default constructor for subclasses.     * Default constructor for subclasses.
# Line 1125  public class Container extends Component Line 1127  public class Container extends Component
1127        throw new NullPointerException ();        throw new NullPointerException ();
1128    }    }
1129        
1130    public void addPropertyChangeListener(PropertyChangeListener l)    public void addPropertyChangeListener (PropertyChangeListener listener)
1131    {    {
1132        if (listener == null)
1133          return;
1134    
1135        if (changeSupport == null)
1136          changeSupport = new PropertyChangeSupport (this);
1137    
1138        changeSupport.addPropertyChangeListener (listener);
1139    }    }
1140        
1141    public void addPropertyChangeListener(String name, PropertyChangeListener l)    public void addPropertyChangeListener (String name,
1142                                             PropertyChangeListener listener)
1143    {    {
1144        if (listener == null)
1145          return;
1146        
1147        if (changeSupport == null)
1148          changeSupport = new PropertyChangeSupport (this);
1149    
1150        changeSupport.addPropertyChangeListener (name, listener);
1151    }    }
1152    
1153    // Hidden helper methods.    // Hidden helper methods.

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