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AWTEventMulticaster.javaAPI DocJava SE 5 API33145Fri Aug 26 14:56:42 BST 2005java.awt

AWTEventMulticaster

public class AWTEventMulticaster extends Object implements ComponentListener, WindowListener, HierarchyBoundsListener, WindowStateListener, TextListener, MouseWheelListener, MouseMotionListener, HierarchyListener, MouseListener, ActionListener, AdjustmentListener, ContainerListener, InputMethodListener, KeyListener, ItemListener, FocusListener, WindowFocusListener
A class which implements efficient and thread-safe multi-cast event dispatching for the AWT events defined in the java.awt.event package. This class will manage an immutable structure consisting of a chain of event listeners and will dispatch events to those listeners. Because the structure is immutable, it is safe to use this API to add/remove listeners during the process of an event dispatch operation. However, event listeners added during the process of an event dispatch operation will not be notified of the event currently being dispatched. An example of how this class could be used to implement a new component which fires "action" events:

public myComponent extends Component {
ActionListener actionListener = null;

public synchronized void addActionListener(ActionListener l) {
actionListener = AWTEventMulticaster.add(actionListener, l);
}
public synchronized void removeActionListener(ActionListener l) {
actionListener = AWTEventMulticaster.remove(actionListener, l);
}
public void processEvent(AWTEvent e) {
// when event occurs which causes "action" semantic
ActionListener listener = actionListener;
if (listener != null) {
listener.actionPerformed(new ActionEvent());
}
}
}
author
John Rose
author
Amy Fowler
version
1.37, 05/05/04
since
1.1

Fields Summary
protected final EventListener
a
protected final EventListener
b
Constructors Summary
protected AWTEventMulticaster(EventListener a, EventListener b)
Creates an event multicaster instance which chains listener-a with listener-b. Input parameters a and b should not be null, though implementations may vary in choosing whether or not to throw NullPointerException in that case.

param
a listener-a
param
b listener-b

	this.a = a; this.b = b;
    
Methods Summary
public voidactionPerformed(java.awt.event.ActionEvent e)
Handles the actionPerformed event by invoking the actionPerformed methods on listener-a and listener-b.

param
e the action event

        ((ActionListener)a).actionPerformed(e);
        ((ActionListener)b).actionPerformed(e);
    
public static java.awt.event.ComponentListeneradd(java.awt.event.ComponentListener a, java.awt.event.ComponentListener b)
Adds component-listener-a with component-listener-b and returns the resulting multicast listener.

param
a component-listener-a
param
b component-listener-b

        return (ComponentListener)addInternal(a, b);
    
public static java.awt.event.ContainerListeneradd(java.awt.event.ContainerListener a, java.awt.event.ContainerListener b)
Adds container-listener-a with container-listener-b and returns the resulting multicast listener.

param
a container-listener-a
param
b container-listener-b

        return (ContainerListener)addInternal(a, b);
    
public static java.awt.event.FocusListeneradd(java.awt.event.FocusListener a, java.awt.event.FocusListener b)
Adds focus-listener-a with focus-listener-b and returns the resulting multicast listener.

param
a focus-listener-a
param
b focus-listener-b

        return (FocusListener)addInternal(a, b);
    
public static java.awt.event.KeyListeneradd(java.awt.event.KeyListener a, java.awt.event.KeyListener b)
Adds key-listener-a with key-listener-b and returns the resulting multicast listener.

param
a key-listener-a
param
b key-listener-b

        return (KeyListener)addInternal(a, b);
    
public static java.awt.event.MouseListeneradd(java.awt.event.MouseListener a, java.awt.event.MouseListener b)
Adds mouse-listener-a with mouse-listener-b and returns the resulting multicast listener.

param
a mouse-listener-a
param
b mouse-listener-b

        return (MouseListener)addInternal(a, b);
    
public static java.awt.event.MouseMotionListeneradd(java.awt.event.MouseMotionListener a, java.awt.event.MouseMotionListener b)
Adds mouse-motion-listener-a with mouse-motion-listener-b and returns the resulting multicast listener.

param
a mouse-motion-listener-a
param
b mouse-motion-listener-b

        return (MouseMotionListener)addInternal(a, b);
    
public static java.awt.event.WindowListeneradd(java.awt.event.WindowListener a, java.awt.event.WindowListener b)
Adds window-listener-a with window-listener-b and returns the resulting multicast listener.

param
a window-listener-a
param
b window-listener-b

        return (WindowListener)addInternal(a, b);
    
public static java.awt.event.WindowStateListeneradd(java.awt.event.WindowStateListener a, java.awt.event.WindowStateListener b)
Adds window-state-listener-a with window-state-listener-b and returns the resulting multicast listener.

param
a window-state-listener-a
param
b window-state-listener-b

        return (WindowStateListener)addInternal(a, b);
    
public static java.awt.event.WindowFocusListeneradd(java.awt.event.WindowFocusListener a, java.awt.event.WindowFocusListener b)
Adds window-focus-listener-a with window-focus-listener-b and returns the resulting multicast listener.

param
a window-focus-listener-a
param
b window-focus-listener-b

        return (WindowFocusListener)addInternal(a, b);
    
public static java.awt.event.ActionListeneradd(java.awt.event.ActionListener a, java.awt.event.ActionListener b)
Adds action-listener-a with action-listener-b and returns the resulting multicast listener.

param
a action-listener-a
param
b action-listener-b

        return (ActionListener)addInternal(a, b);
    
public static java.awt.event.ItemListeneradd(java.awt.event.ItemListener a, java.awt.event.ItemListener b)
Adds item-listener-a with item-listener-b and returns the resulting multicast listener.

param
a item-listener-a
param
b item-listener-b

        return (ItemListener)addInternal(a, b);
    
public static java.awt.event.AdjustmentListeneradd(java.awt.event.AdjustmentListener a, java.awt.event.AdjustmentListener b)
Adds adjustment-listener-a with adjustment-listener-b and returns the resulting multicast listener.

param
a adjustment-listener-a
param
b adjustment-listener-b

        return (AdjustmentListener)addInternal(a, b);
    
public static java.awt.event.TextListeneradd(java.awt.event.TextListener a, java.awt.event.TextListener b)

        return (TextListener)addInternal(a, b);
    
public static java.awt.event.InputMethodListeneradd(java.awt.event.InputMethodListener a, java.awt.event.InputMethodListener b)
Adds input-method-listener-a with input-method-listener-b and returns the resulting multicast listener.

param
a input-method-listener-a
param
b input-method-listener-b

        return (InputMethodListener)addInternal(a, b);
     
public static java.awt.event.HierarchyListeneradd(java.awt.event.HierarchyListener a, java.awt.event.HierarchyListener b)
Adds hierarchy-listener-a with hierarchy-listener-b and returns the resulting multicast listener.

param
a hierarchy-listener-a
param
b hierarchy-listener-b

        return (HierarchyListener)addInternal(a, b);
     
public static java.awt.event.HierarchyBoundsListeneradd(java.awt.event.HierarchyBoundsListener a, java.awt.event.HierarchyBoundsListener b)
Adds hierarchy-bounds-listener-a with hierarchy-bounds-listener-b and returns the resulting multicast listener.

param
a hierarchy-bounds-listener-a
param
b hierarchy-bounds-listener-b

        return (HierarchyBoundsListener)addInternal(a, b);
     
public static java.awt.event.MouseWheelListeneradd(java.awt.event.MouseWheelListener a, java.awt.event.MouseWheelListener b)
Adds mouse-wheel-listener-a with mouse-wheel-listener-b and returns the resulting multicast listener.

param
a mouse-wheel-listener-a
param
b mouse-wheel-listener-b
since
1.4

        return (MouseWheelListener)addInternal(a, b);
    
protected static java.util.EventListeneraddInternal(java.util.EventListener a, java.util.EventListener b)
Returns the resulting multicast listener from adding listener-a and listener-b together. If listener-a is null, it returns listener-b; If listener-b is null, it returns listener-a If neither are null, then it creates and returns a new AWTEventMulticaster instance which chains a with b.

param
a event listener-a
param
b event listener-b

	if (a == null)  return b;
	if (b == null)  return a;
	return new AWTEventMulticaster(a, b);
    
public voidadjustmentValueChanged(java.awt.event.AdjustmentEvent e)
Handles the adjustmentValueChanged event by invoking the adjustmentValueChanged methods on listener-a and listener-b.

param
e the adjustment event

        ((AdjustmentListener)a).adjustmentValueChanged(e);
        ((AdjustmentListener)b).adjustmentValueChanged(e);
    
public voidancestorMoved(java.awt.event.HierarchyEvent e)
Handles the ancestorMoved event by invoking the ancestorMoved methods on listener-a and listener-b.

param
e the item event

        ((HierarchyBoundsListener)a).ancestorMoved(e);
        ((HierarchyBoundsListener)b).ancestorMoved(e);
    
public voidancestorResized(java.awt.event.HierarchyEvent e)
Handles the ancestorResized event by invoking the ancestorResized methods on listener-a and listener-b.

param
e the item event

        ((HierarchyBoundsListener)a).ancestorResized(e);
        ((HierarchyBoundsListener)b).ancestorResized(e);
    
public voidcaretPositionChanged(java.awt.event.InputMethodEvent e)
Handles the caretPositionChanged event by invoking the caretPositionChanged methods on listener-a and listener-b.

param
e the item event

       ((InputMethodListener)a).caretPositionChanged(e);
       ((InputMethodListener)b).caretPositionChanged(e);
    
public voidcomponentAdded(java.awt.event.ContainerEvent e)
Handles the componentAdded container event by invoking the componentAdded methods on listener-a and listener-b.

param
e the component event

        ((ContainerListener)a).componentAdded(e);
        ((ContainerListener)b).componentAdded(e);
    
public voidcomponentHidden(java.awt.event.ComponentEvent e)
Handles the componentHidden event by invoking the componentHidden methods on listener-a and listener-b.

param
e the component event

        ((ComponentListener)a).componentHidden(e);
        ((ComponentListener)b).componentHidden(e);
    
public voidcomponentMoved(java.awt.event.ComponentEvent e)
Handles the componentMoved event by invoking the componentMoved methods on listener-a and listener-b.

param
e the component event

        ((ComponentListener)a).componentMoved(e);
        ((ComponentListener)b).componentMoved(e);
    
public voidcomponentRemoved(java.awt.event.ContainerEvent e)
Handles the componentRemoved container event by invoking the componentRemoved methods on listener-a and listener-b.

param
e the component event

        ((ContainerListener)a).componentRemoved(e);
        ((ContainerListener)b).componentRemoved(e);
    
public voidcomponentResized(java.awt.event.ComponentEvent e)
Handles the componentResized event by invoking the componentResized methods on listener-a and listener-b.

param
e the component event

        ((ComponentListener)a).componentResized(e);
        ((ComponentListener)b).componentResized(e);
    
public voidcomponentShown(java.awt.event.ComponentEvent e)
Handles the componentShown event by invoking the componentShown methods on listener-a and listener-b.

param
e the component event

        ((ComponentListener)a).componentShown(e);
        ((ComponentListener)b).componentShown(e);
    
public voidfocusGained(java.awt.event.FocusEvent e)
Handles the focusGained event by invoking the focusGained methods on listener-a and listener-b.

param
e the focus event

        ((FocusListener)a).focusGained(e);
        ((FocusListener)b).focusGained(e);
    
public voidfocusLost(java.awt.event.FocusEvent e)
Handles the focusLost event by invoking the focusLost methods on listener-a and listener-b.

param
e the focus event

        ((FocusListener)a).focusLost(e);
        ((FocusListener)b).focusLost(e);
    
private static intgetListenerCount(java.util.EventListener l, java.lang.Class listenerType)

 
        if (l instanceof AWTEventMulticaster) {
            AWTEventMulticaster mc = (AWTEventMulticaster)l; 
            return getListenerCount(mc.a, listenerType) +
             getListenerCount(mc.b, listenerType); 
        }
        else {
            // Only count listeners of correct type
            return listenerType.isInstance(l) ? 1 : 0;
        } 
    
public static T[]getListeners(java.util.EventListener l, java.lang.Class listenerType)
Returns an array of all the objects chained as FooListeners by the specified java.util.EventListener. FooListeners are chained by the AWTEventMulticaster using the addFooListener method. If a null listener is specified, this method returns an empty array. If the specified listener is not an instance of AWTEventMulticaster, this method returns an array which contains only the specified listener. If no such listeners are chanined, this method returns an empty array.

param
l the specified java.util.EventListener
param
listenerType the type of listeners requested; this parameter should specify an interface that descends from java.util.EventListener
return
an array of all objects chained as FooListeners by the specified multicast listener, or an empty array if no such listeners have been chained by the specified multicast listener
exception
ClassCastException if listenerType doesn't specify a class or interface that implements java.util.EventListener
since
1.4

        int n = getListenerCount(l, listenerType); 
        T[] result = (T[])Array.newInstance(listenerType, n);
        populateListenerArray(result, l, 0);
        return result;
    
public voidhierarchyChanged(java.awt.event.HierarchyEvent e)
Handles the hierarchyChanged event by invoking the hierarchyChanged methods on listener-a and listener-b.

param
e the item event

        ((HierarchyListener)a).hierarchyChanged(e);
        ((HierarchyListener)b).hierarchyChanged(e);
    
public voidinputMethodTextChanged(java.awt.event.InputMethodEvent e)
Handles the inputMethodTextChanged event by invoking the inputMethodTextChanged methods on listener-a and listener-b.

param
e the item event

       ((InputMethodListener)a).inputMethodTextChanged(e);
       ((InputMethodListener)b).inputMethodTextChanged(e);
    
public voiditemStateChanged(java.awt.event.ItemEvent e)
Handles the itemStateChanged event by invoking the itemStateChanged methods on listener-a and listener-b.

param
e the item event

        ((ItemListener)a).itemStateChanged(e);
        ((ItemListener)b).itemStateChanged(e);
    
public voidkeyPressed(java.awt.event.KeyEvent e)
Handles the keyPressed event by invoking the keyPressed methods on listener-a and listener-b.

param
e the key event

        ((KeyListener)a).keyPressed(e);
        ((KeyListener)b).keyPressed(e);
    
public voidkeyReleased(java.awt.event.KeyEvent e)
Handles the keyReleased event by invoking the keyReleased methods on listener-a and listener-b.

param
e the key event

        ((KeyListener)a).keyReleased(e);
        ((KeyListener)b).keyReleased(e);
    
public voidkeyTyped(java.awt.event.KeyEvent e)
Handles the keyTyped event by invoking the keyTyped methods on listener-a and listener-b.

param
e the key event

        ((KeyListener)a).keyTyped(e);
        ((KeyListener)b).keyTyped(e);
    
public voidmouseClicked(java.awt.event.MouseEvent e)
Handles the mouseClicked event by invoking the mouseClicked methods on listener-a and listener-b.

param
e the mouse event

        ((MouseListener)a).mouseClicked(e);
        ((MouseListener)b).mouseClicked(e);
    
public voidmouseDragged(java.awt.event.MouseEvent e)
Handles the mouseDragged event by invoking the mouseDragged methods on listener-a and listener-b.

param
e the mouse event

        ((MouseMotionListener)a).mouseDragged(e);
        ((MouseMotionListener)b).mouseDragged(e);
    
public voidmouseEntered(java.awt.event.MouseEvent e)
Handles the mouseEntered event by invoking the mouseEntered methods on listener-a and listener-b.

param
e the mouse event

        ((MouseListener)a).mouseEntered(e);
        ((MouseListener)b).mouseEntered(e);
    
public voidmouseExited(java.awt.event.MouseEvent e)
Handles the mouseExited event by invoking the mouseExited methods on listener-a and listener-b.

param
e the mouse event

        ((MouseListener)a).mouseExited(e);
        ((MouseListener)b).mouseExited(e);
    
public voidmouseMoved(java.awt.event.MouseEvent e)
Handles the mouseMoved event by invoking the mouseMoved methods on listener-a and listener-b.

param
e the mouse event

        ((MouseMotionListener)a).mouseMoved(e);
        ((MouseMotionListener)b).mouseMoved(e);
    
public voidmousePressed(java.awt.event.MouseEvent e)
Handles the mousePressed event by invoking the mousePressed methods on listener-a and listener-b.

param
e the mouse event

        ((MouseListener)a).mousePressed(e);
        ((MouseListener)b).mousePressed(e);
    
public voidmouseReleased(java.awt.event.MouseEvent e)
Handles the mouseReleased event by invoking the mouseReleased methods on listener-a and listener-b.

param
e the mouse event

        ((MouseListener)a).mouseReleased(e);
        ((MouseListener)b).mouseReleased(e);
    
public voidmouseWheelMoved(java.awt.event.MouseWheelEvent e)
Handles the mouseWheelMoved event by invoking the mouseWheelMoved methods on listener-a and listener-b.

param
e the mouse event
since
1.4

        ((MouseWheelListener)a).mouseWheelMoved(e);
        ((MouseWheelListener)b).mouseWheelMoved(e);
    
private static intpopulateListenerArray(java.util.EventListener[] a, java.util.EventListener l, int index)

 
        if (l instanceof AWTEventMulticaster) { 
            AWTEventMulticaster mc = (AWTEventMulticaster)l; 
            int lhs = populateListenerArray(a, mc.a, index); 
            return populateListenerArray(a, mc.b, lhs); 
        }
        else if (a.getClass().getComponentType().isInstance(l)) { 
            a[index] = l; 
            return index + 1; 
        } 
        // Skip nulls, instances of wrong class
        else { 
            return index; 
        }
    
protected java.util.EventListenerremove(java.util.EventListener oldl)
Removes a listener from this multicaster and returns the resulting multicast listener.

param
oldl the listener to be removed

	if (oldl == a)  return b;
	if (oldl == b)  return a;
	EventListener a2 = removeInternal(a, oldl);
	EventListener b2 = removeInternal(b, oldl);
	if (a2 == a && b2 == b) {
	    return this;	// it's not here
	}
	return addInternal(a2, b2);
    
public static java.awt.event.ComponentListenerremove(java.awt.event.ComponentListener l, java.awt.event.ComponentListener oldl)
Removes the old component-listener from component-listener-l and returns the resulting multicast listener.

param
l component-listener-l
param
oldl the component-listener being removed

	return (ComponentListener) removeInternal(l, oldl);
    
public static java.awt.event.ContainerListenerremove(java.awt.event.ContainerListener l, java.awt.event.ContainerListener oldl)
Removes the old container-listener from container-listener-l and returns the resulting multicast listener.

param
l container-listener-l
param
oldl the container-listener being removed

	return (ContainerListener) removeInternal(l, oldl);
    
public static java.awt.event.FocusListenerremove(java.awt.event.FocusListener l, java.awt.event.FocusListener oldl)
Removes the old focus-listener from focus-listener-l and returns the resulting multicast listener.

param
l focus-listener-l
param
oldl the focus-listener being removed

	return (FocusListener) removeInternal(l, oldl);
    
public static java.awt.event.KeyListenerremove(java.awt.event.KeyListener l, java.awt.event.KeyListener oldl)
Removes the old key-listener from key-listener-l and returns the resulting multicast listener.

param
l key-listener-l
param
oldl the key-listener being removed

	return (KeyListener) removeInternal(l, oldl);
    
public static java.awt.event.MouseListenerremove(java.awt.event.MouseListener l, java.awt.event.MouseListener oldl)
Removes the old mouse-listener from mouse-listener-l and returns the resulting multicast listener.

param
l mouse-listener-l
param
oldl the mouse-listener being removed

	return (MouseListener) removeInternal(l, oldl);
    
public static java.awt.event.MouseMotionListenerremove(java.awt.event.MouseMotionListener l, java.awt.event.MouseMotionListener oldl)
Removes the old mouse-motion-listener from mouse-motion-listener-l and returns the resulting multicast listener.

param
l mouse-motion-listener-l
param
oldl the mouse-motion-listener being removed

	return (MouseMotionListener) removeInternal(l, oldl);
    
public static java.awt.event.WindowListenerremove(java.awt.event.WindowListener l, java.awt.event.WindowListener oldl)
Removes the old window-listener from window-listener-l and returns the resulting multicast listener.

param
l window-listener-l
param
oldl the window-listener being removed

	return (WindowListener) removeInternal(l, oldl);
    
public static java.awt.event.WindowStateListenerremove(java.awt.event.WindowStateListener l, java.awt.event.WindowStateListener oldl)
Removes the old window-state-listener from window-state-listener-l and returns the resulting multicast listener.

param
l window-state-listener-l
param
oldl the window-state-listener being removed

        return (WindowStateListener) removeInternal(l, oldl);
    
public static java.awt.event.WindowFocusListenerremove(java.awt.event.WindowFocusListener l, java.awt.event.WindowFocusListener oldl)
Removes the old window-focus-listener from window-focus-listener-l and returns the resulting multicast listener.

param
l window-focus-listener-l
param
oldl the window-focus-listener being removed

        return (WindowFocusListener) removeInternal(l, oldl);
    
public static java.awt.event.ActionListenerremove(java.awt.event.ActionListener l, java.awt.event.ActionListener oldl)
Removes the old action-listener from action-listener-l and returns the resulting multicast listener.

param
l action-listener-l
param
oldl the action-listener being removed

	return (ActionListener) removeInternal(l, oldl);
    
public static java.awt.event.ItemListenerremove(java.awt.event.ItemListener l, java.awt.event.ItemListener oldl)
Removes the old item-listener from item-listener-l and returns the resulting multicast listener.

param
l item-listener-l
param
oldl the item-listener being removed

	return (ItemListener) removeInternal(l, oldl);
    
public static java.awt.event.AdjustmentListenerremove(java.awt.event.AdjustmentListener l, java.awt.event.AdjustmentListener oldl)
Removes the old adjustment-listener from adjustment-listener-l and returns the resulting multicast listener.

param
l adjustment-listener-l
param
oldl the adjustment-listener being removed

	return (AdjustmentListener) removeInternal(l, oldl);
    
public static java.awt.event.TextListenerremove(java.awt.event.TextListener l, java.awt.event.TextListener oldl)

	return (TextListener) removeInternal(l, oldl);
    
public static java.awt.event.InputMethodListenerremove(java.awt.event.InputMethodListener l, java.awt.event.InputMethodListener oldl)
Removes the old input-method-listener from input-method-listener-l and returns the resulting multicast listener.

param
l input-method-listener-l
param
oldl the input-method-listener being removed

        return (InputMethodListener) removeInternal(l, oldl);
    
public static java.awt.event.HierarchyListenerremove(java.awt.event.HierarchyListener l, java.awt.event.HierarchyListener oldl)
Removes the old hierarchy-listener from hierarchy-listener-l and returns the resulting multicast listener.

param
l hierarchy-listener-l
param
oldl the hierarchy-listener being removed

        return (HierarchyListener) removeInternal(l, oldl);
    
public static java.awt.event.HierarchyBoundsListenerremove(java.awt.event.HierarchyBoundsListener l, java.awt.event.HierarchyBoundsListener oldl)
Removes the old hierarchy-bounds-listener from hierarchy-bounds-listener-l and returns the resulting multicast listener.

param
l hierarchy-bounds-listener-l
param
oldl the hierarchy-bounds-listener being removed

        return (HierarchyBoundsListener) removeInternal(l, oldl);
    
public static java.awt.event.MouseWheelListenerremove(java.awt.event.MouseWheelListener l, java.awt.event.MouseWheelListener oldl)
Removes the old mouse-wheel-listener from mouse-wheel-listener-l and returns the resulting multicast listener.

param
l mouse-wheel-listener-l
param
oldl the mouse-wheel-listener being removed
since
1.4

      return (MouseWheelListener) removeInternal(l, oldl);
    
protected static java.util.EventListenerremoveInternal(java.util.EventListener l, java.util.EventListener oldl)
Returns the resulting multicast listener after removing the old listener from listener-l. If listener-l equals the old listener OR listener-l is null, returns null. Else if listener-l is an instance of AWTEventMulticaster, then it removes the old listener from it. Else, returns listener l.

param
l the listener being removed from
param
oldl the listener being removed

	if (l == oldl || l == null) {
	    return null;
	} else if (l instanceof AWTEventMulticaster) {
	    return ((AWTEventMulticaster)l).remove(oldl);
	} else {
	    return l;		// it's not here
	}
    
protected static voidsave(java.io.ObjectOutputStream s, java.lang.String k, java.util.EventListener l)

      if (l == null) {
          return;
      } 
      else if (l instanceof AWTEventMulticaster) {
          ((AWTEventMulticaster)l).saveInternal(s, k);
      }
      else if (l instanceof Serializable) {
           s.writeObject(k);
           s.writeObject(l);
      }
    
protected voidsaveInternal(java.io.ObjectOutputStream s, java.lang.String k)

        if (a instanceof AWTEventMulticaster) {
	    ((AWTEventMulticaster)a).saveInternal(s, k);
        }
        else if (a instanceof Serializable) {
            s.writeObject(k);
            s.writeObject(a);
        }
        
        if (b instanceof AWTEventMulticaster) {
	    ((AWTEventMulticaster)b).saveInternal(s, k);
        }
        else if (b instanceof Serializable) {
            s.writeObject(k);
            s.writeObject(b);
        }
    
public voidtextValueChanged(java.awt.event.TextEvent e)

        ((TextListener)a).textValueChanged(e);
        ((TextListener)b).textValueChanged(e);
    
public voidwindowActivated(java.awt.event.WindowEvent e)
Handles the windowActivated event by invoking the windowActivated methods on listener-a and listener-b.

param
e the window event

        ((WindowListener)a).windowActivated(e);
        ((WindowListener)b).windowActivated(e);
    
public voidwindowClosed(java.awt.event.WindowEvent e)
Handles the windowClosed event by invoking the windowClosed methods on listener-a and listener-b.

param
e the window event

        ((WindowListener)a).windowClosed(e);
        ((WindowListener)b).windowClosed(e);
    
public voidwindowClosing(java.awt.event.WindowEvent e)
Handles the windowClosing event by invoking the windowClosing methods on listener-a and listener-b.

param
e the window event

        ((WindowListener)a).windowClosing(e);
        ((WindowListener)b).windowClosing(e);
    
public voidwindowDeactivated(java.awt.event.WindowEvent e)
Handles the windowDeactivated event by invoking the windowDeactivated methods on listener-a and listener-b.

param
e the window event

        ((WindowListener)a).windowDeactivated(e);
        ((WindowListener)b).windowDeactivated(e);
    
public voidwindowDeiconified(java.awt.event.WindowEvent e)
Handles the windowDeiconfied event by invoking the windowDeiconified methods on listener-a and listener-b.

param
e the window event

        ((WindowListener)a).windowDeiconified(e);
        ((WindowListener)b).windowDeiconified(e);
    
public voidwindowGainedFocus(java.awt.event.WindowEvent e)
Handles the windowGainedFocus event by invoking the windowGainedFocus methods on listener-a and listener-b.

param
e the window event

        ((WindowFocusListener)a).windowGainedFocus(e);
        ((WindowFocusListener)b).windowGainedFocus(e);
    
public voidwindowIconified(java.awt.event.WindowEvent e)
Handles the windowIconified event by invoking the windowIconified methods on listener-a and listener-b.

param
e the window event

        ((WindowListener)a).windowIconified(e);
        ((WindowListener)b).windowIconified(e);
    
public voidwindowLostFocus(java.awt.event.WindowEvent e)
Handles the windowLostFocus event by invoking the windowLostFocus methods on listener-a and listener-b.

param
e the window event

        ((WindowFocusListener)a).windowLostFocus(e);
        ((WindowFocusListener)b).windowLostFocus(e);
    
public voidwindowOpened(java.awt.event.WindowEvent e)
Handles the windowOpened event by invoking the windowOpened methods on listener-a and listener-b.

param
e the window event

        ((WindowListener)a).windowOpened(e);
        ((WindowListener)b).windowOpened(e);
    
public voidwindowStateChanged(java.awt.event.WindowEvent e)
Handles the windowStateChanged event by invoking the windowStateChanged methods on listener-a and listener-b.

param
e the window event

        ((WindowStateListener)a).windowStateChanged(e);
        ((WindowStateListener)b).windowStateChanged(e);