AWTEventMulticaster (Sample Document)

java.lang.Object
- java.awt.AWTEventMulticaster

All Implemented Interfaces:

ActionListener, AdjustmentListener, ComponentListener, ContainerListener, FocusListener, HierarchyBoundsListener, HierarchyListener, InputMethodListener, ItemListener, KeyListener, MouseListener, MouseMotionListener, MouseWheelListener, TextListener, WindowFocusListener, WindowListener, WindowStateListener, java.util.EventListener

public class AWTEventMulticaster extends java.lang.Object implements ComponentListener, ContainerListener, FocusListener, KeyListener, MouseListener, MouseMotionListener, WindowListener, WindowFocusListener, WindowStateListener, ActionListener, ItemListener, AdjustmentListener, TextListener, InputMethodListener, HierarchyListener, HierarchyBoundsListener, MouseWheelListener
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.
Since:

1.1

See Also:
EventListenerList

Field Summary

Fields
Modifier and Type Field and Description

protected java.util.EventListener a

protected java.util.EventListener b

Fields
Modifier and Type	Field and Description
`protected java.util.EventListener`	`a`
`protected java.util.EventListener`	`b`

Static Method Summary

Static Methods
Modifier and Type	Static Method and Description
`static ActionListener`	`add(ActionListener a, ActionListener b)` Adds action-listener-a with action-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 ComponentListener`	`add(ComponentListener a, ComponentListener b)` Adds component-listener-a with component-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 FocusListener`	`add(FocusListener a, FocusListener b)` Adds focus-listener-a with focus-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.
`static HierarchyListener`	`add(HierarchyListener a, HierarchyListener b)` Adds hierarchy-listener-a with hierarchy-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 ItemListener`	`add(ItemListener a, ItemListener b)` Adds item-listener-a with item-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 MouseListener`	`add(MouseListener a, MouseListener b)` Adds mouse-listener-a with mouse-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 MouseWheelListener`	`add(MouseWheelListener a, MouseWheelListener b)` Adds mouse-wheel-listener-a with mouse-wheel-listener-b and returns the resulting multicast listener.
`static TextListener`	`add(TextListener a, TextListener b)`
`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 WindowStateListener`	`add(WindowStateListener a, WindowStateListener b)` Adds window-state-listener-a with window-state-listener-b and returns the resulting multicast listener.
`protected static java.util.EventListener`	`addInternal(java.util.EventListener a, java.util.EventListener b)` Returns the resulting multicast listener from adding listener-a and listener-b together.
`static <T extends java.util.EventListener> T[]`	`getListeners(java.util.EventListener l, java.lang.Class<T> listenerType)` Returns an array of all the objects chained as `FooListener`s by the specified `java.util.EventListener`.
`static ActionListener`	`remove(ActionListener l, ActionListener oldl)` Removes the old action-listener from action-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 ComponentListener`	`remove(ComponentListener l, ComponentListener oldl)` Removes the old component-listener from component-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 FocusListener`	`remove(FocusListener l, FocusListener oldl)` Removes the old focus-listener from focus-listener-l and returns the resulting multicast listener.
`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 InputMethodListener`	`remove(InputMethodListener l, InputMethodListener oldl)` Removes the old input-method-listener from input-method-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 KeyListener`	`remove(KeyListener l, KeyListener oldl)` Removes the old key-listener from key-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 MouseMotionListener`	`remove(MouseMotionListener l, MouseMotionListener oldl)` Removes the old mouse-motion-listener from mouse-motion-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 TextListener`	`remove(TextListener l, TextListener oldl)`
`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 WindowListener`	`remove(WindowListener l, WindowListener oldl)` Removes the old window-listener from window-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.
`protected static java.util.EventListener`	`removeInternal(java.util.EventListener l, java.util.EventListener oldl)` Returns the resulting multicast listener after removing the old listener from listener-l.
`protected static void`	`save(java.io.ObjectOutputStream s, java.lang.String k, java.util.EventListener l)`

Constructor Summary

Constructors
Modifier	Constructor and Description
`protected`	`AWTEventMulticaster(java.util.EventListener a, java.util.EventListener b)` Creates an event multicaster instance which chains listener-a with listener-b.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`actionPerformed(ActionEvent e)` Handles the actionPerformed event by invoking the actionPerformed methods on listener-a and listener-b.
`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.
`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.
`protected java.util.EventListener`	`remove(java.util.EventListener oldl)` Removes a listener from this multicaster.
`protected void`	`saveInternal(java.io.ObjectOutputStream s, java.lang.String k)`
`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.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - a
    
    protected final java.util.EventListener a
  - b
    
    protected final java.util.EventListener b
- Constructor Detail
  - AWTEventMulticaster
    
    protected AWTEventMulticaster(java.util.EventListener a, java.util.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
- Method Detail
  - remove
    
    protected java.util.EventListener remove(java.util.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
  - componentResized
    
    public void componentResized(ComponentEvent e)
    
    Handles the componentResized event by invoking the componentResized methods on listener-a and listener-b.
    
    Specified by:
    
    componentResized in interface ComponentListener
    
    Parameters:
    e - the component event
  - componentMoved
    
    public void componentMoved(ComponentEvent e)
    
    Handles the componentMoved event by invoking the componentMoved methods on listener-a and listener-b.
    
    Specified by:
    
    componentMoved in interface ComponentListener
    
    Parameters:
    e - the component event
  - componentShown
    
    public void componentShown(ComponentEvent e)
    
    Handles the componentShown event by invoking the componentShown methods on listener-a and listener-b.
    
    Specified by:
    
    componentShown in interface ComponentListener
    
    Parameters:
    e - the component event
  - componentHidden
    
    public void componentHidden(ComponentEvent e)
    
    Handles the componentHidden event by invoking the componentHidden methods on listener-a and listener-b.
    
    Specified by:
    
    componentHidden in interface ComponentListener
    
    Parameters:
    e - the component event
  - componentAdded
    
    public void componentAdded(ContainerEvent e)
    
    Handles the componentAdded container event by invoking the componentAdded methods on listener-a and listener-b.
    
    Specified by:
    
    componentAdded in interface ContainerListener
    
    Parameters:
    e - the component event
  - componentRemoved
    
    public void componentRemoved(ContainerEvent e)
    
    Handles the componentRemoved container event by invoking the componentRemoved methods on listener-a and listener-b.
    
    Specified by:
    
    componentRemoved in interface ContainerListener
    
    Parameters:
    e - the component event
  - focusGained
    
    public void focusGained(FocusEvent e)
    
    Handles the focusGained event by invoking the focusGained methods on listener-a and listener-b.
    
    Specified by:
    
    focusGained in interface FocusListener
    
    Parameters:
    e - the focus event
  - focusLost
    
    public void focusLost(FocusEvent e)
    
    Handles the focusLost event by invoking the focusLost methods on listener-a and listener-b.
    
    Specified by:
    
    focusLost in interface FocusListener
    
    Parameters:
    e - the focus event
  - keyTyped
    
    public void keyTyped(KeyEvent e)
    
    Handles the keyTyped event by invoking the keyTyped methods on listener-a and listener-b.
    
    Specified by:
    
    keyTyped in interface KeyListener
    
    Parameters:
    e - the key event
  - keyPressed
    
    public void keyPressed(KeyEvent e)
    
    Handles the keyPressed event by invoking the keyPressed methods on listener-a and listener-b.
    
    Specified by:
    
    keyPressed in interface KeyListener
    
    Parameters:
    e - the key event
  - keyReleased
    
    public void keyReleased(KeyEvent e)
    
    Handles the keyReleased event by invoking the keyReleased methods on listener-a and listener-b.
    
    Specified by:
    
    keyReleased in interface KeyListener
    
    Parameters:
    e - the key event
  - mouseClicked
    
    public void mouseClicked(MouseEvent e)
    
    Handles the mouseClicked event by invoking the mouseClicked methods on listener-a and listener-b.
    
    Specified by:
    
    mouseClicked in interface MouseListener
    
    Parameters:
    e - the mouse event
  - mousePressed
    
    public void mousePressed(MouseEvent e)
    
    Handles the mousePressed event by invoking the mousePressed methods on listener-a and listener-b.
    
    Specified by:
    
    mousePressed in interface MouseListener
    
    Parameters:
    e - the mouse event
  - mouseReleased
    
    public void mouseReleased(MouseEvent e)
    
    Handles the mouseReleased event by invoking the mouseReleased methods on listener-a and listener-b.
    
    Specified by:
    
    mouseReleased in interface MouseListener
    
    Parameters:
    e - the mouse event
  - mouseEntered
    
    public void mouseEntered(MouseEvent e)
    
    Handles the mouseEntered event by invoking the mouseEntered methods on listener-a and listener-b.
    
    Specified by:
    
    mouseEntered in interface MouseListener
    
    Parameters:
    e - the mouse event
  - mouseExited
    
    public void mouseExited(MouseEvent e)
    
    Handles the mouseExited event by invoking the mouseExited methods on listener-a and listener-b.
    
    Specified by:
    
    mouseExited in interface MouseListener
    
    Parameters:
    e - the mouse event
  - mouseDragged
    
    public void mouseDragged(MouseEvent e)
    
    Handles the mouseDragged event by invoking the mouseDragged methods on listener-a and listener-b.
    
    Specified by:
    
    mouseDragged in interface MouseMotionListener
    
    Parameters:
    e - the mouse event
  - mouseMoved
    
    public void mouseMoved(MouseEvent e)
    
    Handles the mouseMoved event by invoking the mouseMoved methods on listener-a and listener-b.
    
    Specified by:
    
    mouseMoved in interface MouseMotionListener
    
    Parameters:
    e - the mouse event
  - windowOpened
    
    public void windowOpened(WindowEvent e)
    
    Handles the windowOpened event by invoking the windowOpened methods on listener-a and listener-b.
    
    Specified by:
    
    windowOpened in interface WindowListener
    
    Parameters:
    e - the window event
  - windowClosing
    
    public void windowClosing(WindowEvent e)
    
    Handles the windowClosing event by invoking the windowClosing methods on listener-a and listener-b.
    
    Specified by:
    
    windowClosing in interface WindowListener
    
    Parameters:
    e - the window event
  - windowClosed
    
    public void windowClosed(WindowEvent e)
    
    Handles the windowClosed event by invoking the windowClosed methods on listener-a and listener-b.
    
    Specified by:
    
    windowClosed in interface WindowListener
    
    Parameters:
    e - the window event
  - windowIconified
    
    public void windowIconified(WindowEvent e)
    
    Handles the windowIconified event by invoking the windowIconified methods on listener-a and listener-b.
    
    Specified by:
    
    windowIconified in interface WindowListener
    
    Parameters:
    e - the window event
    See Also:
    Frame.setIconImage(java.awt.Image)
  - windowDeiconified
    
    public void windowDeiconified(WindowEvent e)
    
    Handles the windowDeiconfied event by invoking the windowDeiconified methods on listener-a and listener-b.
    
    Specified by:
    
    windowDeiconified in interface WindowListener
    
    Parameters:
    e - the window event
  - windowActivated
    
    public void windowActivated(WindowEvent e)
    
    Handles the windowActivated event by invoking the windowActivated methods on listener-a and listener-b.
    
    Specified by:
    
    windowActivated in interface WindowListener
    
    Parameters:
    e - the window event
  - windowDeactivated
    
    public void windowDeactivated(WindowEvent e)
    
    Handles the windowDeactivated event by invoking the windowDeactivated methods on listener-a and listener-b.
    
    Specified by:
    
    windowDeactivated in interface WindowListener
    
    Parameters:
    e - the window event
  - windowStateChanged
    
    public void windowStateChanged(WindowEvent e)
    
    Handles the windowStateChanged event by invoking the windowStateChanged methods on listener-a and listener-b.
    
    Specified by:
    
    windowStateChanged in interface WindowStateListener
    
    Parameters:
    e - the window event
    Since:
    
    1.4
  - windowGainedFocus
    
    public void windowGainedFocus(WindowEvent e)
    
    Handles the windowGainedFocus event by invoking the windowGainedFocus methods on listener-a and listener-b.
    
    Specified by:
    
    windowGainedFocus in interface WindowFocusListener
    
    Parameters:
    e - the window event
    Since:
    
    1.4
  - windowLostFocus
    
    public void windowLostFocus(WindowEvent e)
    
    Handles the windowLostFocus event by invoking the windowLostFocus methods on listener-a and listener-b.
    
    Specified by:
    
    windowLostFocus in interface WindowFocusListener
    
    Parameters:
    e - the window event
    Since:
    
    1.4
  - actionPerformed
    
    public void actionPerformed(ActionEvent e)
    
    Handles the actionPerformed event by invoking the actionPerformed methods on listener-a and listener-b.
    
    Specified by:
    
    actionPerformed in interface ActionListener
    
    Parameters:
    e - the action event
  - itemStateChanged
    
    public void itemStateChanged(ItemEvent e)
    
    Handles the itemStateChanged event by invoking the itemStateChanged methods on listener-a and listener-b.
    
    Specified by:
    
    itemStateChanged in interface ItemListener
    
    Parameters:
    e - the item event
  - adjustmentValueChanged
    
    public void adjustmentValueChanged(AdjustmentEvent e)
    
    Handles the adjustmentValueChanged event by invoking the adjustmentValueChanged methods on listener-a and listener-b.
    
    Specified by:
    
    adjustmentValueChanged in interface AdjustmentListener
    
    Parameters:
    e - the adjustment event
  - textValueChanged
    
    public void textValueChanged(TextEvent e)
    
    Description copied from interface: TextListener
    
    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.
    
    Specified by:
    
    textValueChanged in interface TextListener
  - inputMethodTextChanged
    
    public void inputMethodTextChanged(InputMethodEvent e)
    
    Handles the inputMethodTextChanged event by invoking the inputMethodTextChanged methods on listener-a and listener-b.
    
    Specified by:
    
    inputMethodTextChanged in interface InputMethodListener
    
    Parameters:
    e - the item event
  - caretPositionChanged
    
    public void caretPositionChanged(InputMethodEvent e)
    
    Handles the caretPositionChanged event by invoking the caretPositionChanged methods on listener-a and listener-b.
    
    Specified by:
    
    caretPositionChanged in interface InputMethodListener
    
    Parameters:
    e - the item event
  - hierarchyChanged
    
    public void hierarchyChanged(HierarchyEvent e)
    
    Handles the hierarchyChanged event by invoking the hierarchyChanged methods on listener-a and listener-b.
    
    Specified by:
    
    hierarchyChanged in interface HierarchyListener
    
    Parameters:
    e - the item event
    Since:
    
    1.3
    
    See Also:
    HierarchyEvent.getChangeFlags()
  - ancestorMoved
    
    public void ancestorMoved(HierarchyEvent e)
    
    Handles the ancestorMoved event by invoking the ancestorMoved methods on listener-a and listener-b.
    
    Specified by:
    
    ancestorMoved in interface HierarchyBoundsListener
    
    Parameters:
    e - the item event
    Since:
    
    1.3
  - ancestorResized
    
    public void ancestorResized(HierarchyEvent e)
    
    Handles the ancestorResized event by invoking the ancestorResized methods on listener-a and listener-b.
    
    Specified by:
    
    ancestorResized in interface HierarchyBoundsListener
    
    Parameters:
    e - the item event
    Since:
    
    1.3
  - mouseWheelMoved
    
    public void mouseWheelMoved(MouseWheelEvent e)
    
    Handles the mouseWheelMoved event by invoking the mouseWheelMoved methods on listener-a and listener-b.
    
    Specified by:
    
    mouseWheelMoved in interface MouseWheelListener
    
    Parameters:
    e - the mouse event
    Since:
    
    1.4
    
    See Also:
    MouseWheelEvent
  - saveInternal
    
    protected void saveInternal(java.io.ObjectOutputStream s, java.lang.String k) throws java.io.IOException
    
    Throws:
    
    java.io.IOException
- Static Method Detail
  - add
    
    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
  - add
    
    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
  - add
    
    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
  - add
    
    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
  - add
    
    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
  - add
    
    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
  - add
    
    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
  - add
    
    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
    Since:
    
    1.4
  - add
    
    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
    Since:
    
    1.4
  - add
    
    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
  - add
    
    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
  - add
    
    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
  - add
    
    public static TextListener add(TextListener a, TextListener b)
  - add
    
    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
  - add
    
    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
    Since:
    
    1.3
  - add
    
    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
    Since:
    
    1.3
  - add
    
    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
    Since:
    
    1.4
  - remove
    
    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
  - remove
    
    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
  - remove
    
    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
  - remove
    
    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
  - remove
    
    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
  - remove
    
    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
  - remove
    
    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
  - remove
    
    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
    Since:
    
    1.4
  - remove
    
    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
    Since:
    
    1.4
  - remove
    
    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
  - remove
    
    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
  - remove
    
    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
  - remove
    
    public static TextListener remove(TextListener l, TextListener oldl)
  - remove
    
    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
  - remove
    
    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
    Since:
    
    1.3
  - remove
    
    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
    Since:
    
    1.3
  - remove
    
    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
    Since:
    
    1.4
  - addInternal
    
    protected static java.util.EventListener addInternal(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.
    
    Parameters:
    a - event listener-a
    b - event listener-b
  - removeInternal
    
    protected static java.util.EventListener removeInternal(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.
    
    Parameters:
    l - the listener being removed from
    oldl - the listener being removed
  - save
    
    protected static void save(java.io.ObjectOutputStream s, java.lang.String k, java.util.EventListener l) throws java.io.IOException
    
    Throws:
    
    java.io.IOException
  - getListeners
    
    public static <T extends java.util.EventListener> T[] getListeners(java.util.EventListener l, java.lang.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:
    
    java.lang.NullPointerException - if the specified listenertype parameter is null
    
    java.lang.ClassCastException - if listenerType doesn't specify a class or interface that implements java.util.EventListener
    Since:
    
    1.4

Class AWTEventMulticaster

Field Summary

Static Method Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

a

b

Constructor Detail

AWTEventMulticaster

Method Detail

remove

componentResized

componentMoved

componentShown

componentHidden

componentAdded

componentRemoved

focusGained

focusLost

keyTyped

keyPressed

keyReleased

mouseClicked

mousePressed

mouseReleased

mouseEntered

mouseExited

mouseDragged

mouseMoved

windowOpened

windowClosing

windowClosed

windowIconified

windowDeiconified

windowActivated

windowDeactivated

windowStateChanged

windowGainedFocus

windowLostFocus

actionPerformed

itemStateChanged

adjustmentValueChanged

textValueChanged

inputMethodTextChanged

caretPositionChanged

hierarchyChanged

ancestorMoved

ancestorResized

mouseWheelMoved

saveInternal

Static Method Detail

add

add

add

add

add

add

add

add

add

add

add

add

add

add

add

add

add

remove

remove

remove

remove

remove

remove

remove

remove

remove

remove