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MoveDownAction (NetBeans APIs) - NetBeans API Javadoc 4.1.0

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org.openide.actions
Class MoveDownAction

java.lang.Object
  extended byorg.openide.util.SharedClassObject
      extended byorg.openide.util.actions.SystemAction
          extended byorg.openide.util.actions.CallableSystemAction
              extended byorg.openide.util.actions.NodeAction
                  extended byorg.openide.actions.MoveDownAction
All Implemented Interfaces:
Action, ActionListener, ContextAwareAction, EventListener, Externalizable, HelpCtx.Provider, Presenter, Presenter.Menu, Presenter.Popup, Presenter.Toolbar, Serializable
public final class MoveDownAction
extends NodeAction

Move an item down in a list. This action is final only for performance reasons.

See Also:
Index, Serialized Form

Nested Class Summary
 
Nested classes inherited from class org.openide.util.actions.Presenter
Presenter.Menu, Presenter.Popup, Presenter.Toolbar
 
Field Summary
 
Fields inherited from class org.openide.util.actions.SystemAction
PROP_ENABLED, PROP_ICON
 
Fields inherited from interface javax.swing.Action
ACCELERATOR_KEY, ACTION_COMMAND_KEY, DEFAULT, LONG_DESCRIPTION, MNEMONIC_KEY, NAME, SHORT_DESCRIPTION, SMALL_ICON
 
Constructor Summary
MoveDownAction()
           
 
Method Summary
protected  boolean asynchronous()
          If true, this action should be performed asynchronously in a private thread.
protected  boolean enable(Node[] activatedNodes)
          Test whether the action should be enabled based on the currently activated nodes.
 HelpCtx getHelpCtx()
          Get a help context for the action.
 String getName()
          Get a human presentable name of the action.
protected  void initialize()
          Initialize the action.
protected  void performAction(Node[] activatedNodes)
          Perform the action based on the currently activated nodes.
 
Methods inherited from class org.openide.util.actions.NodeAction
actionPerformed, addNotify, createContextAwareInstance, getActivatedNodes, isEnabled, performAction, removeNotify, setEnabled, surviveFocusChange
 
Methods inherited from class org.openide.util.actions.CallableSystemAction
getMenuPresenter, getPopupPresenter, getToolbarPresenter
 
Methods inherited from class org.openide.util.actions.SystemAction
clearSharedData, createPopupMenu, createToolbarPresenter, get, getIcon, getIcon, getValue, iconResource, linkActions, putValue, setIcon
 
Methods inherited from class org.openide.util.SharedClassObject
addPropertyChangeListener, equals, finalize, findObject, findObject, firePropertyChange, getLock, getProperty, hashCode, putProperty, putProperty, readExternal, removePropertyChangeListener, reset, writeExternal, writeReplace
 
Methods inherited from class java.lang.Object
clone, getClass, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface javax.swing.Action
addPropertyChangeListener, getValue, putValue, removePropertyChangeListener
 

Constructor Detail

MoveDownAction

public MoveDownAction()
Method Detail

initialize

protected void initialize()
Description copied from class: SystemAction
Initialize the action. The default implementation just enabled it.

Overrides:
initialize in class NodeAction

performAction

protected void performAction(Node[] activatedNodes)
Description copied from class: NodeAction
Perform the action based on the currently activated nodes. Note that if the source of the event triggering this action was itself a node, that node will be the sole argument to this method, rather than the activated nodes.

Specified by:
performAction in class NodeAction
Parameters:
activatedNodes - current activated nodes, may be empty but not null

asynchronous

protected boolean asynchronous()
Description copied from class: CallableSystemAction
If true, this action should be performed asynchronously in a private thread. If false, it will be performed synchronously as called in the event thread.

The default value is true for compatibility reasons; subclasses are strongly encouraged to override it to be false, and to either do their work promptly in the event thread and return, or to somehow do work asynchronously (for example using RequestProcessor.getDefault()).

You may currently set the global default to false by setting the system property org.openide.util.actions.CallableSystemAction.synchronousByDefault to true.

When true, the current implementation also provides for a wait cursor during the execution of the action. Subclasses which override to return false should consider directly providing a wait or busy cursor if the nature of the action merits it.

Overrides:
asynchronous in class CallableSystemAction
Returns:
true if this action should automatically be performed asynchronously

enable

protected boolean enable(Node[] activatedNodes)
Description copied from class: NodeAction
Test whether the action should be enabled based on the currently activated nodes.

Specified by:
enable in class NodeAction
Parameters:
activatedNodes - current activated nodes, may be empty but not null
Returns:
true to be enabled, false to be disabled

getName

public String getName()
Description copied from class: SystemAction
Get a human presentable name of the action. This may be presented as an item in a menu.

Using the normal menu presenters, an included ampersand before a letter will be treated as the name of a mnemonic.

Specified by:
getName in class SystemAction
Returns:
the name of the action

getHelpCtx

public HelpCtx getHelpCtx()
Description copied from class: SystemAction
Get a help context for the action.

Specified by:
getHelpCtx in interface HelpCtx.Provider
Specified by:
getHelpCtx in class SystemAction
Returns:
the help context for this action
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