com.levigo.util.swing.action
Class DelegateAction

java.lang.Object
  com.levigo.util.swing.action.DelegateAction

All Implemented Interfaces:

ActionListener, EventListener, Action

public class DelegateAction
extends Object
implements Action

An Action which delegates the actual action to a delegate Action, but allows other properties of the action to be overridden. This class maintains a private set of properites. If a property has been set on this class, it will be used instead of the delegate's property. Otherwise it will fall back to the asking the delegate. This class currently supports static actions only: no property changes from the delegate action or this class are propagated. Consequently, calling addPropertyChangeListener(PropertyChangeListener) or removePropertyChangeListener(PropertyChangeListener) has no effect.

Field Summary

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

DelegateAction(Action delegate)
Create a new delegate action delegating to the given delegate action.

Method Summary

void	actionPerformed(ActionEvent e)
void	addPropertyChangeListener(PropertyChangeListener listener)
Object	getValue(String key) Get the value for the given property key.
boolean	isEnabled()
void	putValue(String key, Object value) Override the value for the given property key.
void	removeOverriddenProperty(String key) Remove the overridden property for the given key.
void	removePropertyChangeListener(PropertyChangeListener listener)
void	reset() Reset all properties and the enabled state to the values of the delegate action.
void	setEnabled(boolean b)

Methods inherited from class java.lang.Object

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

Constructor Detail

DelegateAction

public DelegateAction(Action delegate)

Create a new delegate action delegating to the given delegate action.

Parameters:

delegate - the delegate

Method Detail

actionPerformed

public void actionPerformed(ActionEvent e)

Specified by:

actionPerformed in interface ActionListener

getValue

public Object getValue(String key)

Get the value for the given property key. If the property has been overridden, the local value is returned. Otherwise we fall back to the delegate's property value.

Specified by:

getValue in interface Action

See Also:

Action.getValue(java.lang.String)

putValue

public void putValue(String key,
                     Object value)

Override the value for the given property key. The delegate action remains unchanged.

Specified by:

putValue in interface Action

See Also:

Action.putValue(java.lang.String, java.lang.Object)

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

removeOverriddenProperty

public void removeOverriddenProperty(String key)

Remove the overridden property for the given key.

Parameters:

key -

reset

public void reset()

Reset all properties and the enabled state to the values of the delegate action.