public abstract class AbstractAction extends Object implements Action, Cloneable, Serializable
Action
interface. Standard behaviors like the get and set methods for
Action object properties (icon, text, and enabled) are defined
here. The developer need only subclass this abstract class and
define the actionPerformed method.
Warning:
Serialized objects of this class will not be compatible with
future Swing releases. The current serialization support is
appropriate for short term storage or RMI between applications running
the same version of Swing. As of 1.4, support for long term storage
of all JavaBeans™
has been added to the java.beans package.
Please see XMLEncoder.
Action| Modifier and Type | Field and Description |
|---|---|
protected SwingPropertyChangeSupport |
changeSupport
If any
PropertyChangeListeners have been registered, the
changeSupport field describes them. |
protected boolean |
enabled
Specifies whether action is enabled; the default is true.
|
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 and Description |
|---|
AbstractAction()
Creates an
Action. |
AbstractAction(String name)
Creates an
Action with the specified name. |
AbstractAction(String name,
Icon icon)
Creates an
Action with the specified name and small icon. |
| Modifier and Type | Method and Description |
|---|---|
void |
addPropertyChangeListener(PropertyChangeListener listener)
Adds a
PropertyChangeListener to the listener list. |
protected Object |
clone()
Clones the abstract action.
|
protected void |
firePropertyChange(String propertyName,
Object oldValue,
Object newValue)
Supports reporting bound property changes.
|
Object[] |
getKeys()
Returns an array of
Objects which are keys for
which values have been set for this AbstractAction,
or null if no keys have values set. |
PropertyChangeListener[] |
getPropertyChangeListeners()
Returns an array of all the
PropertyChangeListeners added
to this AbstractAction with addPropertyChangeListener(). |
Object |
getValue(String key)
Gets the
Object associated with the specified key. |
boolean |
isEnabled()
Returns true if the action is enabled.
|
void |
putValue(String key,
Object newValue)
Sets the
Value associated with the specified key. |
void |
removePropertyChangeListener(PropertyChangeListener listener)
Removes a
PropertyChangeListener from the listener list. |
void |
setEnabled(boolean newValue)
Sets whether the
Action is enabled. |
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitactionPerformedprotected boolean enabled
protected SwingPropertyChangeSupport changeSupport
PropertyChangeListeners have been registered, the
changeSupport field describes them.public AbstractAction()
Action.public AbstractAction(String name)
Action with the specified name.name - the name (Action.NAME) for the action; a
value of null is ignoredpublic Object getValue(String key)
Object associated with the specified key.getValue in interface Actionkey - a string containing the specified keyObject stored with this key; if there
are no keys, it will return nullAction.getValue(java.lang.String)public void putValue(String key, Object newValue)
Value associated with the specified key.putValue in interface Actionkey - the String that identifies the stored objectnewValue - the Object to store using this keyAction.putValue(java.lang.String, java.lang.Object)public boolean isEnabled()
isEnabled in interface ActionAction.isEnabled()public void setEnabled(boolean newValue)
Action is enabled. The default is true.setEnabled in interface ActionnewValue - true to enable the action, false to
disable itAction.setEnabled(boolean)public Object[] getKeys()
Objects which are keys for
which values have been set for this AbstractAction,
or null if no keys have values set.null if no
keys have values setprotected void firePropertyChange(String propertyName, Object oldValue, Object newValue)
PropertyChangeEvent to any registered
PropertyChangeListeners.public void addPropertyChangeListener(PropertyChangeListener listener)
PropertyChangeListener to the listener list.
The listener is registered for all properties.
A PropertyChangeEvent will get fired in response to setting
a bound property, e.g. setFont, setBackground,
or setForeground.
Note that if the current component is inheriting its foreground,
background, or font from its container, then no event will be
fired in response to a change in the inherited property.
addPropertyChangeListener in interface Actionlistener - The PropertyChangeListener to be addedAction.addPropertyChangeListener(java.beans.PropertyChangeListener)public void removePropertyChangeListener(PropertyChangeListener listener)
PropertyChangeListener from the listener list.
This removes a PropertyChangeListener that was registered
for all properties.removePropertyChangeListener in interface Actionlistener - the PropertyChangeListener to be removedAction.removePropertyChangeListener(java.beans.PropertyChangeListener)public PropertyChangeListener[] getPropertyChangeListeners()
PropertyChangeListeners added
to this AbstractAction with addPropertyChangeListener().PropertyChangeListeners added or an empty
array if no listeners have been addedprotected Object clone() throws CloneNotSupportedException
Object.clone().clone in class ObjectCloneNotSupportedException - if the object's class does not
support the Cloneable interface. Subclasses
that override the clone method can also
throw this exception to indicate that an instance cannot
be cloned.Cloneable Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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