org.jhotdraw.app.action
Class AbstractSelectionAction
java.lang.Object
javax.swing.AbstractAction
org.jhotdraw.app.action.AbstractSelectionAction
- All Implemented Interfaces:
- java.awt.event.ActionListener, java.io.Serializable, java.lang.Cloneable, java.util.EventListener, javax.swing.Action
- Direct Known Subclasses:
- ClearSelectionAction, CopyAction, CutAction, DuplicateAction, PasteAction, SelectAllAction
public abstract class AbstractSelectionAction
- extends javax.swing.AbstractAction
AbstractSelectionAction
acts on the selection of a target component.
By default, the action is disabled when the target component is disabled or has
no selection. * If the target component is null, updateEnabled does nothing.
You can change this behavior by overriding method updateEnabled()
.
This action registers a WeakPropertyChangeListener
on the component.
- Version:
- 1.0 2010-01-10 Created.
- Author:
- Werner Randelshofer
- See Also:
- Serialized Form
Field Summary |
protected javax.swing.JComponent |
target
The target of the action or null if the action acts on the currently
focused component. |
Fields inherited from class javax.swing.AbstractAction |
changeSupport, enabled |
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 |
AbstractSelectionAction(javax.swing.JComponent target)
Creates a new instance which acts on the specified component. |
Methods inherited from class javax.swing.AbstractAction |
addPropertyChangeListener, clone, firePropertyChange, getKeys, getPropertyChangeListeners, getValue, isEnabled, putValue, removePropertyChangeListener, setEnabled |
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 |
target
protected javax.swing.JComponent target
- The target of the action or null if the action acts on the currently
focused component.
AbstractSelectionAction
public AbstractSelectionAction(javax.swing.JComponent target)
- Creates a new instance which acts on the specified component.
- Parameters:
target
- The target of the action. Specify null for the currently
focused component.
updateEnabled
protected void updateEnabled()