java.lang.Object
   ↳ java.awt.AWTEventMulticaster

Class Overview

AWTEventMulticaster implements efficient and thread-safe multi-cast event dispatching for the AWT events defined in the java.awt.event package.

The following example illustrates how to use this class: 


 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());
         }
     }
 }
The important point to note is the first argument to the add and remove methods is the field maintaining the listeners. In addition you must assign the result of the add and remove methods to the field maintaining the listeners.

AWTEventMulticaster is implemented as a pair of EventListeners that are set at construction time. AWTEventMulticaster is immutable. The add and remove methods do not alter AWTEventMulticaster in anyway. If necessary, a new AWTEventMulticaster is created. In this way it is safe to add and remove listeners during the process of an event dispatching. However, event listeners added during the process of an event dispatch operation are not notified of the event currently being dispatched.

All of the add methods allow null arguments. If the first argument is null, the second argument is returned. If the first argument is not null and the second argument is null, the first argument is returned. If both arguments are non-null, a new AWTEventMulticaster is created using the two arguments and returned.

For the remove methods that take two arguments, the following is returned:

  • null, if the first argument is null, or the arguments are equal, by way of ==.
  • the first argument, if the first argument is not an instance of AWTEventMulticaster.
  • result of invoking remove(EventListener) on the first argument, supplying the second argument to the remove(EventListener) method.

Swing makes use of EventListenerList for similar logic. Refer to it for details.

See Also

Summary

Fields
protected final EventListener a
protected final EventListener b
Protected Constructors
AWTEventMulticaster(EventListener a, EventListener b)
Creates an event multicaster instance which chains listener-a with listener-b.
Public Methods
void actionPerformed(ActionEvent e)
Handles the actionPerformed event by invoking the actionPerformed methods on listener-a and listener-b.
static TextListener add(TextListener a, TextListener b)
static ActionListener add(ActionListener a, ActionListener b)
Adds action-listener-a with action-listener-b and returns the resulting multicast listener.
static ContainerListener add(ContainerListener a, ContainerListener b)
Adds container-listener-a with container-listener-b and returns the resulting multicast listener.
static AdjustmentListener add(AdjustmentListener a, AdjustmentListener b)
Adds adjustment-listener-a with adjustment-listener-b and returns the resulting multicast listener.
static ItemListener add(ItemListener a, ItemListener b)
Adds item-listener-a with item-listener-b and returns the resulting multicast listener.
static WindowStateListener add(WindowStateListener a, WindowStateListener b)
Adds window-state-listener-a with window-state-listener-b and returns the resulting multicast listener.
static MouseWheelListener add(MouseWheelListener a, MouseWheelListener b)
Adds mouse-wheel-listener-a with mouse-wheel-listener-b and returns the resulting multicast listener.
static KeyListener add(KeyListener a, KeyListener b)
Adds key-listener-a with key-listener-b and returns the resulting multicast listener.
static FocusListener add(FocusListener a, FocusListener b)
Adds focus-listener-a with focus-listener-b and returns the resulting multicast listener.
static HierarchyListener add(HierarchyListener a, HierarchyListener b)
Adds hierarchy-listener-a with hierarchy-listener-b and returns the resulting multicast listener.
static MouseListener add(MouseListener a, MouseListener b)
Adds mouse-listener-a with mouse-listener-b and returns the resulting multicast listener.
static WindowFocusListener add(WindowFocusListener a, WindowFocusListener b)
Adds window-focus-listener-a with window-focus-listener-b and returns the resulting multicast listener.
static WindowListener add(WindowListener a, WindowListener b)
Adds window-listener-a with window-listener-b and returns the resulting multicast listener.
static ComponentListener add(ComponentListener a, ComponentListener b)
Adds component-listener-a with component-listener-b and returns the resulting multicast listener.
static InputMethodListener add(InputMethodListener a, InputMethodListener b)
Adds input-method-listener-a with input-method-listener-b and returns the resulting multicast listener.
static MouseMotionListener add(MouseMotionListener a, MouseMotionListener b)
Adds mouse-motion-listener-a with mouse-motion-listener-b and returns the resulting multicast listener.
static HierarchyBoundsListener add(HierarchyBoundsListener a, HierarchyBoundsListener b)
Adds hierarchy-bounds-listener-a with hierarchy-bounds-listener-b and returns the resulting multicast listener.
void adjustmentValueChanged(AdjustmentEvent e)
Handles the adjustmentValueChanged event by invoking the adjustmentValueChanged methods on listener-a and listener-b.
void ancestorMoved(HierarchyEvent e)
Handles the ancestorMoved event by invoking the ancestorMoved methods on listener-a and listener-b.
void ancestorResized(HierarchyEvent e)
Handles the ancestorResized event by invoking the ancestorResized methods on listener-a and listener-b.
void caretPositionChanged(InputMethodEvent e)
Handles the caretPositionChanged event by invoking the caretPositionChanged methods on listener-a and listener-b.
void componentAdded(ContainerEvent e)
Handles the componentAdded container event by invoking the componentAdded methods on listener-a and listener-b.
void componentHidden(ComponentEvent e)
Handles the componentHidden event by invoking the componentHidden methods on listener-a and listener-b.
void componentMoved(ComponentEvent e)
Handles the componentMoved event by invoking the componentMoved methods on listener-a and listener-b.
void componentRemoved(ContainerEvent e)
Handles the componentRemoved container event by invoking the componentRemoved methods on listener-a and listener-b.
void componentResized(ComponentEvent e)
Handles the componentResized event by invoking the componentResized methods on listener-a and listener-b.
void componentShown(ComponentEvent e)
Handles the componentShown event by invoking the componentShown methods on listener-a and listener-b.
void focusGained(FocusEvent e)
Handles the focusGained event by invoking the focusGained methods on listener-a and listener-b.
void focusLost(FocusEvent e)
Handles the focusLost event by invoking the focusLost methods on listener-a and listener-b.
static <T extends EventListener> T[] getListeners(EventListener l, Class<T> listenerType)
Returns an array of all the objects chained as FooListeners by the specified java.util.EventListener.
void hierarchyChanged(HierarchyEvent e)
Handles the hierarchyChanged event by invoking the hierarchyChanged methods on listener-a and listener-b.
void inputMethodTextChanged(InputMethodEvent e)
Handles the inputMethodTextChanged event by invoking the inputMethodTextChanged methods on listener-a and listener-b.
void itemStateChanged(ItemEvent e)
Handles the itemStateChanged event by invoking the itemStateChanged methods on listener-a and listener-b.
void keyPressed(KeyEvent e)
Handles the keyPressed event by invoking the keyPressed methods on listener-a and listener-b.
void keyReleased(KeyEvent e)
Handles the keyReleased event by invoking the keyReleased methods on listener-a and listener-b.
void keyTyped(KeyEvent e)
Handles the keyTyped event by invoking the keyTyped methods on listener-a and listener-b.
void mouseClicked(MouseEvent e)
Handles the mouseClicked event by invoking the mouseClicked methods on listener-a and listener-b.
void mouseDragged(MouseEvent e)
Handles the mouseDragged event by invoking the mouseDragged methods on listener-a and listener-b.
void mouseEntered(MouseEvent e)
Handles the mouseEntered event by invoking the mouseEntered methods on listener-a and listener-b.
void mouseExited(MouseEvent e)
Handles the mouseExited event by invoking the mouseExited methods on listener-a and listener-b.
void mouseMoved(MouseEvent e)
Handles the mouseMoved event by invoking the mouseMoved methods on listener-a and listener-b.
void mousePressed(MouseEvent e)
Handles the mousePressed event by invoking the mousePressed methods on listener-a and listener-b.
void mouseReleased(MouseEvent e)
Handles the mouseReleased event by invoking the mouseReleased methods on listener-a and listener-b.
void mouseWheelMoved(MouseWheelEvent e)
Handles the mouseWheelMoved event by invoking the mouseWheelMoved methods on listener-a and listener-b.
static HierarchyBoundsListener remove(HierarchyBoundsListener l, HierarchyBoundsListener oldl)
Removes the old hierarchy-bounds-listener from hierarchy-bounds-listener-l and returns the resulting multicast listener.
static HierarchyListener remove(HierarchyListener l, HierarchyListener oldl)
Removes the old hierarchy-listener from hierarchy-listener-l and returns the resulting multicast listener.
static ComponentListener remove(ComponentListener l, ComponentListener oldl)
Removes the old component-listener from component-listener-l and returns the resulting multicast listener.
static MouseMotionListener remove(MouseMotionListener l, MouseMotionListener oldl)
Removes the old mouse-motion-listener from mouse-motion-listener-l and returns the resulting multicast listener.
static ActionListener remove(ActionListener l, ActionListener oldl)
Removes the old action-listener from action-listener-l and returns the resulting multicast listener.
static WindowFocusListener remove(WindowFocusListener l, WindowFocusListener oldl)
Removes the old window-focus-listener from window-focus-listener-l and returns the resulting multicast listener.
static ContainerListener remove(ContainerListener l, ContainerListener oldl)
Removes the old container-listener from container-listener-l and returns the resulting multicast listener.
static ItemListener remove(ItemListener l, ItemListener oldl)
Removes the old item-listener from item-listener-l and returns the resulting multicast listener.
static WindowStateListener remove(WindowStateListener l, WindowStateListener oldl)
Removes the old window-state-listener from window-state-listener-l and returns the resulting multicast listener.
static FocusListener remove(FocusListener l, FocusListener oldl)
Removes the old focus-listener from focus-listener-l and returns the resulting multicast listener.
static TextListener remove(TextListener l, TextListener oldl)
static InputMethodListener remove(InputMethodListener l, InputMethodListener oldl)
Removes the old input-method-listener from input-method-listener-l and returns the resulting multicast listener.
static MouseWheelListener remove(MouseWheelListener l, MouseWheelListener oldl)
Removes the old mouse-wheel-listener from mouse-wheel-listener-l and returns the resulting multicast listener.
static WindowListener remove(WindowListener l, WindowListener oldl)
Removes the old window-listener from window-listener-l and returns the resulting multicast listener.
static AdjustmentListener remove(AdjustmentListener l, AdjustmentListener oldl)
Removes the old adjustment-listener from adjustment-listener-l and returns the resulting multicast listener.
static MouseListener remove(MouseListener l, MouseListener oldl)
Removes the old mouse-listener from mouse-listener-l and returns the resulting multicast listener.
static KeyListener remove(KeyListener l, KeyListener oldl)
Removes the old key-listener from key-listener-l and returns the resulting multicast listener.
void textValueChanged(TextEvent e)
Invoked when the value of the text has changed.
void windowActivated(WindowEvent e)
Handles the windowActivated event by invoking the windowActivated methods on listener-a and listener-b.
void windowClosed(WindowEvent e)
Handles the windowClosed event by invoking the windowClosed methods on listener-a and listener-b.
void windowClosing(WindowEvent e)
Handles the windowClosing event by invoking the windowClosing methods on listener-a and listener-b.
void windowDeactivated(WindowEvent e)
Handles the windowDeactivated event by invoking the windowDeactivated methods on listener-a and listener-b.
void windowDeiconified(WindowEvent e)
Handles the windowDeiconfied event by invoking the windowDeiconified methods on listener-a and listener-b.
void windowGainedFocus(WindowEvent e)
Handles the windowGainedFocus event by invoking the windowGainedFocus methods on listener-a and listener-b.
void windowIconified(WindowEvent e)
Handles the windowIconified event by invoking the windowIconified methods on listener-a and listener-b.
void windowLostFocus(WindowEvent e)
Handles the windowLostFocus event by invoking the windowLostFocus methods on listener-a and listener-b.
void windowOpened(WindowEvent e)
Handles the windowOpened event by invoking the windowOpened methods on listener-a and listener-b.
void windowStateChanged(WindowEvent e)
Handles the windowStateChanged event by invoking the windowStateChanged methods on listener-a and listener-b.
Protected Methods
static EventListener addInternal(EventListener a, EventListener b)
Returns the resulting multicast listener from adding listener-a and listener-b together.
EventListener remove(EventListener oldl)
Removes a listener from this multicaster.
static EventListener removeInternal(EventListener l, EventListener oldl)
Returns the resulting multicast listener after removing the old listener from listener-l.
static void save(ObjectOutputStream s, String k, EventListener l)
void saveInternal(ObjectOutputStream s, String k)
[Expand]
Inherited Methods
From class java.lang.Object
From interface java.awt.event.ActionListener
From interface java.awt.event.AdjustmentListener
From interface java.awt.event.ComponentListener
From interface java.awt.event.ContainerListener
From interface java.awt.event.FocusListener
From interface java.awt.event.HierarchyBoundsListener
From interface java.awt.event.HierarchyListener
From interface java.awt.event.InputMethodListener
From interface java.awt.event.ItemListener
From interface java.awt.event.KeyListener
From interface java.awt.event.MouseListener
From interface java.awt.event.MouseMotionListener
From interface java.awt.event.MouseWheelListener
From interface java.awt.event.TextListener
From interface java.awt.event.WindowFocusListener
From interface java.awt.event.WindowListener
From interface java.awt.event.WindowStateListener

Fields

protected final EventListener a

protected final EventListener b

Protected Constructors

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.

Parameters
a listener-a
b listener-b

Public Methods

public void actionPerformed (ActionEvent e)

Handles the actionPerformed event by invoking the actionPerformed methods on listener-a and listener-b.

Parameters
e the action event

public static TextListener add (TextListener a, TextListener b)

public static ActionListener add (ActionListener a, ActionListener b)

Adds action-listener-a with action-listener-b and returns the resulting multicast listener.

Parameters
a action-listener-a
b action-listener-b

public static ContainerListener add (ContainerListener a, ContainerListener b)

Adds container-listener-a with container-listener-b and returns the resulting multicast listener.

Parameters
a container-listener-a
b container-listener-b

public static AdjustmentListener add (AdjustmentListener a, AdjustmentListener b)

Adds adjustment-listener-a with adjustment-listener-b and returns the resulting multicast listener.

Parameters
a adjustment-listener-a
b adjustment-listener-b

public static ItemListener add (ItemListener a, ItemListener b)

Adds item-listener-a with item-listener-b and returns the resulting multicast listener.

Parameters
a item-listener-a
b item-listener-b

public static WindowStateListener add (WindowStateListener a, WindowStateListener b)

Adds window-state-listener-a with window-state-listener-b and returns the resulting multicast listener.

Parameters
a window-state-listener-a
b window-state-listener-b

public static MouseWheelListener add (MouseWheelListener a, MouseWheelListener b)

Adds mouse-wheel-listener-a with mouse-wheel-listener-b and returns the resulting multicast listener.

Parameters
a mouse-wheel-listener-a
b mouse-wheel-listener-b

public static KeyListener add (KeyListener a, KeyListener b)

Adds key-listener-a with key-listener-b and returns the resulting multicast listener.

Parameters
a key-listener-a
b key-listener-b

public static FocusListener add (FocusListener a, FocusListener b)

Adds focus-listener-a with focus-listener-b and returns the resulting multicast listener.

Parameters
a focus-listener-a
b focus-listener-b

public static HierarchyListener add (HierarchyListener a, HierarchyListener b)

Adds hierarchy-listener-a with hierarchy-listener-b and returns the resulting multicast listener.

Parameters
a hierarchy-listener-a
b hierarchy-listener-b

public static MouseListener add (MouseListener a, MouseListener b)

Adds mouse-listener-a with mouse-listener-b and returns the resulting multicast listener.

Parameters
a mouse-listener-a
b mouse-listener-b

public static WindowFocusListener add (WindowFocusListener a, WindowFocusListener b)

Adds window-focus-listener-a with window-focus-listener-b and returns the resulting multicast listener.

Parameters
a window-focus-listener-a
b window-focus-listener-b

public static WindowListener add (WindowListener a, WindowListener b)

Adds window-listener-a with window-listener-b and returns the resulting multicast listener.

Parameters
a window-listener-a
b window-listener-b

public static ComponentListener add (ComponentListener a, ComponentListener b)

Adds component-listener-a with component-listener-b and returns the resulting multicast listener.

Parameters
a component-listener-a
b component-listener-b

public static InputMethodListener add (InputMethodListener a, InputMethodListener b)

Adds input-method-listener-a with input-method-listener-b and returns the resulting multicast listener.

Parameters
a input-method-listener-a
b input-method-listener-b

public static MouseMotionListener add (MouseMotionListener a, MouseMotionListener b)

Adds mouse-motion-listener-a with mouse-motion-listener-b and returns the resulting multicast listener.

Parameters
a mouse-motion-listener-a
b mouse-motion-listener-b

public static HierarchyBoundsListener add (HierarchyBoundsListener a, HierarchyBoundsListener b)

Adds hierarchy-bounds-listener-a with hierarchy-bounds-listener-b and returns the resulting multicast listener.

Parameters
a hierarchy-bounds-listener-a
b hierarchy-bounds-listener-b

public void adjustmentValueChanged (AdjustmentEvent e)

Handles the adjustmentValueChanged event by invoking the adjustmentValueChanged methods on listener-a and listener-b.

Parameters
e the adjustment event

public void ancestorMoved (HierarchyEvent e)

Handles the ancestorMoved event by invoking the ancestorMoved methods on listener-a and listener-b.

Parameters
e the item event

public void ancestorResized (HierarchyEvent e)

Handles the ancestorResized event by invoking the ancestorResized methods on listener-a and listener-b.

Parameters
e the item event

public void caretPositionChanged (InputMethodEvent e)

Handles the caretPositionChanged event by invoking the caretPositionChanged methods on listener-a and listener-b.

Parameters
e the item event

public void componentAdded (ContainerEvent e)

Handles the componentAdded container event by invoking the componentAdded methods on listener-a and listener-b.

Parameters
e the component event

public void componentHidden (ComponentEvent e)

Handles the componentHidden event by invoking the componentHidden methods on listener-a and listener-b.

Parameters
e the component event

public void componentMoved (ComponentEvent e)

Handles the componentMoved event by invoking the componentMoved methods on listener-a and listener-b.

Parameters
e the component event

public void componentRemoved (ContainerEvent e)

Handles the componentRemoved container event by invoking the componentRemoved methods on listener-a and listener-b.

Parameters
e the component event

public void componentResized (ComponentEvent e)

Handles the componentResized event by invoking the componentResized methods on listener-a and listener-b.

Parameters
e the component event

public void componentShown (ComponentEvent e)

Handles the componentShown event by invoking the componentShown methods on listener-a and listener-b.

Parameters
e the component event

public void focusGained (FocusEvent e)

Handles the focusGained event by invoking the focusGained methods on listener-a and listener-b.

Parameters
e the focus event

public void focusLost (FocusEvent e)

Handles the focusLost event by invoking the focusLost methods on listener-a and listener-b.

Parameters
e the focus event

public static T[] getListeners (EventListener l, Class<T> 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.

Parameters
l the specified java.util.EventListener
listenerType the type of listeners requested; this parameter should specify an interface that descends from java.util.EventListener
Returns
  • 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
Throws
NullPointerException if the specified listenertype parameter is null
ClassCastException if listenerType doesn't specify a class or interface that implements java.util.EventListener

public void hierarchyChanged (HierarchyEvent e)

Handles the hierarchyChanged event by invoking the hierarchyChanged methods on listener-a and listener-b.

Parameters
e the item event

public void inputMethodTextChanged (InputMethodEvent e)

Handles the inputMethodTextChanged event by invoking the inputMethodTextChanged methods on listener-a and listener-b.

Parameters
e the item event

public void itemStateChanged (ItemEvent e)

Handles the itemStateChanged event by invoking the itemStateChanged methods on listener-a and listener-b.

Parameters
e the item event

public void keyPressed (KeyEvent e)

Handles the keyPressed event by invoking the keyPressed methods on listener-a and listener-b.

Parameters
e the key event

public void keyReleased (KeyEvent e)

Handles the keyReleased event by invoking the keyReleased methods on listener-a and listener-b.

Parameters
e the key event

public void keyTyped (KeyEvent e)

Handles the keyTyped event by invoking the keyTyped methods on listener-a and listener-b.

Parameters
e the key event

public void mouseClicked (MouseEvent e)

Handles the mouseClicked event by invoking the mouseClicked methods on listener-a and listener-b.

Parameters
e the mouse event

public void mouseDragged (MouseEvent e)

Handles the mouseDragged event by invoking the mouseDragged methods on listener-a and listener-b.

Parameters
e the mouse event

public void mouseEntered (MouseEvent e)

Handles the mouseEntered event by invoking the mouseEntered methods on listener-a and listener-b.

Parameters
e the mouse event

public void mouseExited (MouseEvent e)

Handles the mouseExited event by invoking the mouseExited methods on listener-a and listener-b.

Parameters
e the mouse event

public void mouseMoved (MouseEvent e)

Handles the mouseMoved event by invoking the mouseMoved methods on listener-a and listener-b.

Parameters
e the mouse event

public void mousePressed (MouseEvent e)

Handles the mousePressed event by invoking the mousePressed methods on listener-a and listener-b.

Parameters
e the mouse event

public void mouseReleased (MouseEvent e)

Handles the mouseReleased event by invoking the mouseReleased methods on listener-a and listener-b.

Parameters
e the mouse event

public void mouseWheelMoved (MouseWheelEvent e)

Handles the mouseWheelMoved event by invoking the mouseWheelMoved methods on listener-a and listener-b.

Parameters
e the mouse event

public static HierarchyBoundsListener remove (HierarchyBoundsListener l, HierarchyBoundsListener oldl)

Removes the old hierarchy-bounds-listener from hierarchy-bounds-listener-l and returns the resulting multicast listener.

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

public static HierarchyListener remove (HierarchyListener l, HierarchyListener oldl)

Removes the old hierarchy-listener from hierarchy-listener-l and returns the resulting multicast listener.

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

public static ComponentListener remove (ComponentListener l, ComponentListener oldl)

Removes the old component-listener from component-listener-l and returns the resulting multicast listener.

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

public static MouseMotionListener remove (MouseMotionListener l, MouseMotionListener oldl)

Removes the old mouse-motion-listener from mouse-motion-listener-l and returns the resulting multicast listener.

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

public static ActionListener remove (ActionListener l, ActionListener oldl)

Removes the old action-listener from action-listener-l and returns the resulting multicast listener.

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

public static WindowFocusListener remove (WindowFocusListener l, WindowFocusListener oldl)

Removes the old window-focus-listener from window-focus-listener-l and returns the resulting multicast listener.

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

public static ContainerListener remove (ContainerListener l, ContainerListener oldl)

Removes the old container-listener from container-listener-l and returns the resulting multicast listener.

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

public static ItemListener remove (ItemListener l, ItemListener oldl)

Removes the old item-listener from item-listener-l and returns the resulting multicast listener.

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

public static WindowStateListener remove (WindowStateListener l, WindowStateListener oldl)

Removes the old window-state-listener from window-state-listener-l and returns the resulting multicast listener.

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

public static FocusListener remove (FocusListener l, FocusListener oldl)

Removes the old focus-listener from focus-listener-l and returns the resulting multicast listener.

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

public static TextListener remove (TextListener l, TextListener oldl)

public static InputMethodListener remove (InputMethodListener l, InputMethodListener oldl)

Removes the old input-method-listener from input-method-listener-l and returns the resulting multicast listener.

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

public static MouseWheelListener remove (MouseWheelListener l, MouseWheelListener oldl)

Removes the old mouse-wheel-listener from mouse-wheel-listener-l and returns the resulting multicast listener.

Parameters
l mouse-wheel-listener-l
oldl the mouse-wheel-listener being removed

public static WindowListener remove (WindowListener l, WindowListener oldl)

Removes the old window-listener from window-listener-l and returns the resulting multicast listener.

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

public static AdjustmentListener remove (AdjustmentListener l, AdjustmentListener oldl)

Removes the old adjustment-listener from adjustment-listener-l and returns the resulting multicast listener.

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

public static MouseListener remove (MouseListener l, MouseListener oldl)

Removes the old mouse-listener from mouse-listener-l and returns the resulting multicast listener.

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

public static KeyListener remove (KeyListener l, KeyListener oldl)

Removes the old key-listener from key-listener-l and returns the resulting multicast listener.

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

public void textValueChanged (TextEvent e)

Invoked when the value of the text has changed. The code written for this method performs the operations that need to occur when text changes.

public void windowActivated (WindowEvent e)

Handles the windowActivated event by invoking the windowActivated methods on listener-a and listener-b.

Parameters
e the window event

public void windowClosed (WindowEvent e)

Handles the windowClosed event by invoking the windowClosed methods on listener-a and listener-b.

Parameters
e the window event

public void windowClosing (WindowEvent e)

Handles the windowClosing event by invoking the windowClosing methods on listener-a and listener-b.

Parameters
e the window event

public void windowDeactivated (WindowEvent e)

Handles the windowDeactivated event by invoking the windowDeactivated methods on listener-a and listener-b.

Parameters
e the window event

public void windowDeiconified (WindowEvent e)

Handles the windowDeiconfied event by invoking the windowDeiconified methods on listener-a and listener-b.

Parameters
e the window event

public void windowGainedFocus (WindowEvent e)

Handles the windowGainedFocus event by invoking the windowGainedFocus methods on listener-a and listener-b.

Parameters
e the window event

public void windowIconified (WindowEvent e)

Handles the windowIconified event by invoking the windowIconified methods on listener-a and listener-b.

Parameters
e the window event

public void windowLostFocus (WindowEvent e)

Handles the windowLostFocus event by invoking the windowLostFocus methods on listener-a and listener-b.

Parameters
e the window event

public void windowOpened (WindowEvent e)

Handles the windowOpened event by invoking the windowOpened methods on listener-a and listener-b.

Parameters
e the window event

public void windowStateChanged (WindowEvent e)

Handles the windowStateChanged event by invoking the windowStateChanged methods on listener-a and listener-b.

Parameters
e the window event

Protected Methods

protected static EventListener addInternal (EventListener a, 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.

Parameters
a event listener-a
b event listener-b

protected EventListener remove (EventListener oldl)

Removes a listener from this multicaster.

The returned multicaster contains all the listeners in this multicaster with the exception of all occurrences of oldl. If the resulting multicaster contains only one regular listener the regular listener may be returned. If the resulting multicaster is empty, then null may be returned instead.

No exception is thrown if oldl is null.

Parameters
oldl the listener to be removed
Returns
  • resulting listener

protected static EventListener removeInternal (EventListener l, 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.

Parameters
l the listener being removed from
oldl the listener being removed

protected static void save (ObjectOutputStream s, String k, EventListener l)

Throws
IOException

protected void saveInternal (ObjectOutputStream s, String k)

Throws
IOException