java.lang.Object
- javax.swing.AbstractAction

All Implemented Interfaces:

ActionListener, Serializable, Cloneable, EventListener, Action

Direct Known Subclasses:

BasicDesktopPaneUI.CloseAction, BasicDesktopPaneUI.MaximizeAction, BasicDesktopPaneUI.MinimizeAction, BasicDesktopPaneUI.NavigateAction, BasicDesktopPaneUI.OpenAction, BasicFileChooserUI.ApproveSelectionAction, BasicFileChooserUI.CancelSelectionAction, BasicFileChooserUI.ChangeToParentDirectoryAction, BasicFileChooserUI.GoHomeAction, BasicFileChooserUI.NewFolderAction, BasicFileChooserUI.UpdateAction, BasicInternalFrameTitlePane.CloseAction, BasicInternalFrameTitlePane.IconifyAction, BasicInternalFrameTitlePane.MaximizeAction, BasicInternalFrameTitlePane.MoveAction, BasicInternalFrameTitlePane.RestoreAction, BasicInternalFrameTitlePane.SizeAction, BasicSliderUI.ActionScroller, BasicTreeUI.TreeCancelEditingAction, BasicTreeUI.TreeHomeAction, BasicTreeUI.TreeIncrementAction, BasicTreeUI.TreePageAction, BasicTreeUI.TreeToggleAction, BasicTreeUI.TreeTraverseAction, MetalFileChooserUI.DirectoryComboBoxAction, TextAction
```
public abstract class AbstractAction
extends Object
implements Action, Cloneable, Serializable
```
This class provides default implementations for the JFC 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^TM has been added to the java.beans package. Please see XMLEncoder.

See Also:
Action

Field Summary

Fields
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.

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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
`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.

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Method Summary

Methods
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 `Object`s 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 `PropertyChangeListener`s 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.

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Methods inherited from class java.lang.Object equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.awt.event.ActionListener actionPerformed

- 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

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Dokument erstellt 11/06/2005, zuletzt geändert 04/03/2020
Quelle des gedruckten Dokuments:https://www.gaudry.be/de/java-api-rf-javax/swing/abstractaction.html

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Referenzen

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Class AbstractAction

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