Java javax.swing Class AbstractAction（JDK8）

Field Detail

• enabled

  protected boolean enabled

  Specifies whether action is enabled; the default is true.

• changeSupport

  protected SwingPropertyChangeSupport changeSupport

  If any PropertyChangeListeners have been registered, the changeSupport field describes them.

Constructor Detail

• AbstractAction

  public AbstractAction()

  Creates an Action.

• AbstractAction

  public AbstractAction(String name)

  Creates an Action with the specified name.

  Parameters:

  name - the name (Action.NAME) for the action; a value of null is ignored

• AbstractAction

  public AbstractAction(String name,
                        Icon icon)

  Creates an Action with the specified name and small icon.

  Parameters:

  name - the name (Action.NAME) for the action; a value of null is ignored

  icon - the small icon (Action.SMALL_ICON) for the action; a value of null is ignored

Method Detail

• getValue

  public Object getValue(String key)

  Gets the Object associated with the specified key.

  Specified by:

  getValue in interface Action

  Parameters:

  key - a string containing the specified key

  Returns:

  the binding Object stored with this key; if there are no keys, it will return null

  See Also:

  Action.getValue(java.lang.String)

• putValue

  public void putValue(String key,
                       Object newValue)

  Sets the Value associated with the specified key.

  Specified by:

  putValue in interface Action

  Parameters:

  key - the String that identifies the stored object

  newValue - the Object to store using this key

  See Also:

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

• isEnabled

  public boolean isEnabled()

  Returns true if the action is enabled.

  Specified by:

  isEnabled in interface Action

  Returns:

  true if the action is enabled, false otherwise

  See Also:

  Action.isEnabled()

• setEnabled

  public void setEnabled(boolean newValue)

  Sets whether the Action is enabled. The default is true.

  Specified by:

  setEnabled in interface Action

  Parameters:

  newValue - true to enable the action, false to disable it

  See Also:

  Action.setEnabled(boolean)

• getKeys

  public 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.

  Returns:

  an array of key objects, or null if no keys have values set

  Since:

  1.3

• firePropertyChange

  protected void firePropertyChange(String propertyName,
                                    Object oldValue,
                                    Object newValue)

  Supports reporting bound property changes. This method can be called when a bound property has changed and it will send the appropriate PropertyChangeEvent to any registered PropertyChangeListeners.

• addPropertyChangeListener

  public void addPropertyChangeListener(PropertyChangeListener listener)

  Adds a 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.

  Specified by:

  addPropertyChangeListener in interface Action

  Parameters:

  listener - The PropertyChangeListener to be added

  See Also:

  Action.addPropertyChangeListener(java.beans.PropertyChangeListener)

• removePropertyChangeListener

  public void removePropertyChangeListener(PropertyChangeListener listener)

  Removes a PropertyChangeListener from the listener list. This removes a PropertyChangeListener that was registered for all properties.

  Specified by:

  removePropertyChangeListener in interface Action

  Parameters:

  listener - the PropertyChangeListener to be removed

  See Also:

  Action.removePropertyChangeListener(java.beans.PropertyChangeListener)

• getPropertyChangeListeners

  public PropertyChangeListener[] getPropertyChangeListeners()

  Returns an array of all the PropertyChangeListeners added to this AbstractAction with addPropertyChangeListener().

  Returns:

  all of the PropertyChangeListeners added or an empty array if no listeners have been added

  Since:

  1.4

• clone

  protected Object clone()
                  throws CloneNotSupportedException

  Clones the abstract action. This gives the clone its own copy of the key/value list, which is not handled for you by Object.clone().

  Overrides:

  clone in class Object

  Returns:

  a clone of this instance.

  Throws:

  CloneNotSupportedException - 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.

  See Also:

  Cloneable