edu.rice.cs.util.swing
Class DelegatingAction

java.lang.Object
  edu.rice.cs.util.swing.DelegatingAction

All Implemented Interfaces:

ActionListener, EventListener, Action

public class DelegatingAction
extends Object
implements Action

Field Summary

private Action	_delegatee The action to delegate to.
private LinkedList<PropertyChangeListener>	_listenerList
private HashMap<String,Object>	_localProperties Can't use a more specific type parameter because of Action interface.
private static String[]	KEYS_TO_DELEGATE These keys will be copied from the delegatee.

Fields inherited from interface javax.swing.Action

ACCELERATOR_KEY, ACTION_COMMAND_KEY, DEFAULT, DISPLAYED_MNEMONIC_INDEX_KEY, LARGE_ICON_KEY, LONG_DESCRIPTION, MNEMONIC_KEY, NAME, SELECTED_KEY, SHORT_DESCRIPTION, SMALL_ICON

Constructor Summary

DelegatingAction()

Method Summary

private void	_checkState()
private boolean	_isDelegatedKey(String key)
void	actionPerformed(ActionEvent ae)
void	addPropertyChangeListener(PropertyChangeListener listener)
Action	getDelegatee()
Object	getValue(String key) Returns value of the key, from delegatee is it's in KEYS_TO_DELEGATE or from this if not.
boolean	isEnabled()
void	putValue(String key, Object value)
void	removePropertyChangeListener(PropertyChangeListener listener)
void	setDelegatee(Action newDelegatee)
void	setEnabled(boolean b)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

KEYS_TO_DELEGATE

private static final String[] KEYS_TO_DELEGATE

These keys will be copied from the delegatee. All other keys are held in this action itself.

_localProperties

private volatile HashMap<String,Object> _localProperties

Can't use a more specific type parameter because of Action interface.

_delegatee

private volatile Action _delegatee

The action to delegate to. If it's null, this action is disabled and all method calls will result in IllegalStateExceptions.

_listenerList

private final LinkedList<PropertyChangeListener> _listenerList

Constructor Detail

DelegatingAction

public DelegatingAction()

Method Detail

getValue

public Object getValue(String key)

Returns value of the key, from delegatee is it's in KEYS_TO_DELEGATE or from this if not.

Specified by:

getValue in interface Action

_isDelegatedKey

private boolean _isDelegatedKey(String key)

putValue

public void putValue(String key,
                     Object value)

Specified by:

putValue in interface Action

setEnabled

public void setEnabled(boolean b)

Specified by:

setEnabled in interface Action

isEnabled

public boolean isEnabled()

Specified by:

isEnabled in interface Action

addPropertyChangeListener

public void addPropertyChangeListener(PropertyChangeListener listener)

Specified by:

addPropertyChangeListener in interface Action

removePropertyChangeListener

public void removePropertyChangeListener(PropertyChangeListener listener)

Specified by:

removePropertyChangeListener in interface Action

actionPerformed

public void actionPerformed(ActionEvent ae)

Specified by:

actionPerformed in interface ActionListener

getDelegatee

public Action getDelegatee()

setDelegatee

public void setDelegatee(Action newDelegatee)

_checkState

private void _checkState()