sun.swing

Class UIAction [ source ]

java.lang.Object

sun.swing.UIAction

All Implemented Interfaces:

ActionListener, EventListener, Action

Direct Known Subclasses:

BasicRootPaneUI.Actions, TransferHandler.TransferAction

public abstract class UIAction
extends Object
implements Action

UIAction is the basis of all of basic's action classes that are used in an ActionMap. Subclasses need to override actionPerformed.

A typical subclass will look like:

    private static class Actions extends UIAction {
        Actions(String name) {
            super(name);
        }

        public void actionPerformed(ActionEvent ae) {
            if (getName() == "selectAll") {
                selectAll();
            }
            else if (getName() == "cancelEditing") {
                cancelEditing();
            }
        }
    }
 

Subclasses that wish to conditionalize the enabled state should override isEnabled(Component), and be aware that the passed in Component may be null.

See Also:

com.sun.java.swing.ExtendedAction, Action

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

Constructors

Constructor and Description
UIAction(String name)

Method Summary

Methods

Modifier and Type	Method and Description
void	addPropertyChangeListener(PropertyChangeListener listener) Adds a PropertyChange listener.
String	getName()
Object	getValue(String key) Gets one of this object's properties using the associated key.
boolean	isEnabled() Cover method for isEnabled(null).
boolean	isEnabled(Object sender) Subclasses that need to conditionalize the enabled state should override this.
void	putValue(String key, Object value) Sets one of this object's properties using the associated key.
void	removePropertyChangeListener(PropertyChangeListener listener) Removes a PropertyChange listener.
void	setEnabled(boolean b) Sets the enabled state of the Action.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.awt.event.ActionListener

actionPerformed

Constructor Detail

UIAction

public UIAction(String name)

Method Detail

getName

public final String getName()

getValue

public Object getValue(String key)

Description copied from interface: Action

Gets one of this object's properties using the associated key.

Specified by:

getValue in interface Action

See Also:

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

putValue

public void putValue(String key,
            Object value)

Description copied from interface: Action

Sets one of this object's properties using the associated key. If the value has changed, a PropertyChangeEvent is sent to listeners.

Specified by:

putValue in interface Action

Parameters:

key - a String containing the key

value - an Object value

setEnabled

public void setEnabled(boolean b)

Description copied from interface: Action

Sets the enabled state of the Action. When enabled, any component associated with this object is active and able to fire this object's actionPerformed method. If the value has changed, a PropertyChangeEvent is sent to listeners.

Specified by:

setEnabled in interface Action

Parameters:

b - true to enable this Action, false to disable it

isEnabled

public final boolean isEnabled()

Cover method for isEnabled(null).

Specified by:

isEnabled in interface Action

Returns:

true if this Action is enabled

isEnabled

public boolean isEnabled(Object sender)

Subclasses that need to conditionalize the enabled state should override this. Be aware that sender may be null.

Parameters:

sender - Widget enabled state is being asked for, may be null.

addPropertyChangeListener

public void addPropertyChangeListener(PropertyChangeListener listener)

Description copied from interface: Action

Adds a PropertyChange listener. Containers and attached components use these methods to register interest in this Action object. When its enabled state or other property changes, the registered listeners are informed of the change.

Specified by:

addPropertyChangeListener in interface Action

Parameters:

listener - a PropertyChangeListener object

removePropertyChangeListener

public void removePropertyChangeListener(PropertyChangeListener listener)

Description copied from interface: Action

Removes a PropertyChange listener.

Specified by:

removePropertyChangeListener in interface Action

Parameters:

listener - a PropertyChangeListener object

See Also:

Action.addPropertyChangeListener(java.beans.PropertyChangeListener)