Class AWTEventMulticaster
- 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
,EventListener
public class AWTEventMulticaster extends 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 isnull
, 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 theremove(EventListener)
method.
Swing makes use of EventListenerList
for similar logic. Refer to it for details.
- Since:
- 1.1
- See Also:
EventListenerList
Field Summary
Modifier and Type | Field | Description |
---|---|---|
protected EventListener | a | A variable in the event chain (listener-a) |
protected EventListener | b | A variable in the event chain (listener-b) |
Constructor Summary
Modifier | Constructor | Description |
---|---|---|
protected | AWTEventMulticaster(EventListener a,
EventListener b) | Creates an event multicaster instance which chains listener-a with listener-b. |
Method Summary
Modifier and Type | Method | Description |
---|---|---|
void | actionPerformed(ActionEvent e) | Handles the actionPerformed event by invoking the actionPerformed methods on listener-a and listener-b. |
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) | Adds text-listener-a with text-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 WindowStateListener | add(WindowStateListener a,
WindowStateListener b) | Adds window-state-listener-a with window-state-listener-b and returns the resulting multicast listener. |
protected static EventListener | addInternal(EventListener a,
EventListener b) | Returns the resulting multicast listener from adding listener-a and listener-b together. |
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> | getListeners(EventListener l,
Class<T> listenerType) | Returns an array of all the objects chained as |
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 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) | Removes the old text-listener from text-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 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 EventListener | remove(EventListener oldl) | Removes a listener from this multicaster. |
protected static EventListener | removeInternal(EventListener l,
EventListener oldl) | Returns the resulting multicast listener after removing the old listener from listener-l. |
protected static void | save(ObjectOutputStream s,
String k,
EventListener l) | Saves a Serializable listener chain to a serialization stream. |
protected void | saveInternal(ObjectOutputStream s,
String k) | Serialization support. |
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 windowDeiconified 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 declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods declared in interface java.awt.event.TextListener
textValueChanged
Field Detail
a
protected final EventListener a
A variable in the event chain (listener-a)
b
protected final EventListener b
A variable in the event chain (listener-b)
Constructor Detail
AWTEventMulticaster
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
Method Detail
remove
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
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 interfaceComponentListener
- 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 interfaceComponentListener
- 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 interfaceComponentListener
- 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 interfaceComponentListener
- 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 interfaceContainerListener
- 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 interfaceContainerListener
- 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 interfaceFocusListener
- 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 interfaceFocusListener
- 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 interfaceKeyListener
- 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 interfaceKeyListener
- 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 interfaceKeyListener
- 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 interfaceMouseListener
- 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 interfaceMouseListener
- 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 interfaceMouseListener
- 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 interfaceMouseListener
- 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 interfaceMouseListener
- 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 interfaceMouseMotionListener
- 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 interfaceMouseMotionListener
- 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 interfaceWindowListener
- 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 interfaceWindowListener
- 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 interfaceWindowListener
- 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 interfaceWindowListener
- Parameters:
-
e
- the window event - See Also:
Window.setIconImage(java.awt.Image)
windowDeiconified
public void windowDeiconified(WindowEvent e)
Handles the windowDeiconified event by invoking the windowDeiconified methods on listener-a and listener-b.
- Specified by:
-
windowDeiconified
in interfaceWindowListener
- 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 interfaceWindowListener
- 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 interfaceWindowListener
- 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 interfaceWindowStateListener
- 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 interfaceWindowFocusListener
- 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 interfaceWindowFocusListener
- 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 interfaceActionListener
- 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 interfaceItemListener
- 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 interfaceAdjustmentListener
- Parameters:
-
e
- the adjustment event
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 interfaceInputMethodListener
- 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 interfaceInputMethodListener
- 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 interfaceHierarchyListener
- 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 interfaceHierarchyBoundsListener
- 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 interfaceHierarchyBoundsListener
- 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 interfaceMouseWheelListener
- Parameters:
-
e
- the mouse event - Since:
- 1.4
- See Also:
MouseWheelEvent
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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
- 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 - Returns:
- the resulting listener
- 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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
add
public static TextListener add(TextListener a, TextListener b)
Adds text-listener-a with text-listener-b and returns the resulting multicast listener.
- Parameters:
-
a
- text-listener-a -
b
- text-listener-b - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
- 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 - Returns:
- the resulting listener
- 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 - Returns:
- the resulting listener
- 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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
- 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 - Returns:
- the resulting listener
- 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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
remove
public static TextListener remove(TextListener l, TextListener oldl)
Removes the old text-listener from text-listener-l and returns the resulting multicast listener.
- Parameters:
-
l
- text-listener-l -
oldl
- the text-listener being removed - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
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 - Returns:
- the resulting listener
- 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 - Returns:
- the resulting listener
- 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 - Returns:
- the resulting listener
- Since:
- 1.4
addInternal
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 - Returns:
- the resulting listener
removeInternal
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 - Returns:
- the resulting listener
saveInternal
protected void saveInternal(ObjectOutputStream s, String k) throws IOException
Serialization support. Saves all Serializable listeners to a serialization stream.
- Parameters:
-
s
- the stream to save to -
k
- a prefix stream to put before each serializable listener - Throws:
-
IOException
- if serialization fails
save
protected static void save(ObjectOutputStream s, String k, EventListener l) throws IOException
Saves a Serializable listener chain to a serialization stream.
- Parameters:
-
s
- the stream to save to -
k
- a prefix stream to put before each serializable listener -
l
- the listener chain to save - Throws:
-
IOException
- if serialization fails
getListeners
public static <T extends EventListener> T[] getListeners(EventListener l, Class<T> listenerType)
Returns an array of all the objects chained as FooListener
s by the specified java.util.EventListener
. FooListener
s 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 chained, this method returns an empty array.
- Type Parameters:
-
T
- the listener type - Parameters:
-
l
- the specifiedjava.util.EventListener
-
listenerType
- the type of listeners requested; this parameter should specify an interface that descends fromjava.util.EventListener
- Returns:
- an array of all objects chained as
FooListener
s 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 specifiedlistenertype
parameter isnull
-
ClassCastException
- iflistenerType
doesn't specify a class or interface that implementsjava.util.EventListener
- Since:
- 1.4