Package com.bc.ceres.swing.actions

Class AbstractSystemAction

java.lang.Object

javax.swing.AbstractAction

com.bc.ceres.swing.actions.AbstractSystemAction

All Implemented Interfaces:

ActionListener, Serializable, Cloneable, EventListener, Action

Direct Known Subclasses:

AbstractSelectionAction, AbstractUndoAction

public abstract class AbstractSystemAction
extends AbstractAction

An abstract base class for generic actions which can is executed either when actionPerformed(java.awt.event.ActionEvent) is called from a Swing UI, or programmatically by invoking execute().

Since:

Ceres 0.10

See Also:

• actionPerformed(java.awt.event.ActionEvent)
• Serialized Form

Field Summary

Fields inherited from class javax.swing.AbstractAction

changeSupport, enabled

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

Constructors

Modifier	Constructor	Description
protected	AbstractSystemAction(String name, KeyStroke acceleratorKey, String iconResource)

Method Summary

Modifier and Type	Method	Description
void	actionPerformed(ActionEvent e)	Invoked when an action occurs.
abstract void	execute()
abstract boolean	isExecutable()
protected ImageIcon	loadIcon(String resource)
void	updateState()	Invoked to update this action's state, usually in reponse to some application specific events.

Methods inherited from class javax.swing.AbstractAction

addPropertyChangeListener, clone, firePropertyChange, getKeys, getPropertyChangeListeners, getValue, isEnabled, putValue, removePropertyChangeListener, setEnabled

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.swing.Action

accept

Constructor Details

AbstractSystemAction

protected AbstractSystemAction(String name,
 KeyStroke acceleratorKey,
 String iconResource)

Method Details

actionPerformed

public void actionPerformed(ActionEvent e)

Invoked when an action occurs. The method is implemented as follows:

 if (isExecutable()) {
     execute();
 }
 updateState();
 

Parameters:

e - The action event.

See Also:

• isExecutable()
• execute()
• updateState()

isExecutable

public abstract boolean isExecutable()

execute

public abstract void execute()

updateState

public void updateState()

Invoked to update this action's state, usually in reponse to some application specific events. The method is implemented as follows:

 boolean executable = isExecutable();
 setEnabled(executable);
 

loadIcon

protected ImageIcon loadIcon(String resource)