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package sun.swing;

import java.beans.PropertyChangeListener;

import javax.swing.Action;

UIAction is the basis of all of basic's action classes that are used in an ActionMap. Subclasses need to override actionPerformed.

A typical subclass will look like:

   private static class Actions extends UIAction {
       Actions(String name) {
           super(name);
       }
       public void actionPerformed(ActionEvent ae) {
           if (getName() == "selectAll") {
               selectAll();
           }
           else if (getName() == "cancelEditing") {
               cancelEditing();
           }
       }
   }

Subclasses that wish to conditionalize the enabled state should override isEnabled(Component), and be aware that the passed in Component may be null.

Author:Scott Violet
See Also:
  • Action
/** * UIAction is the basis of all of basic's action classes that are used in * an ActionMap. Subclasses need to override <code>actionPerformed</code>. * <p> * A typical subclass will look like: * <pre> * private static class Actions extends UIAction { * Actions(String name) { * super(name); * } * * public void actionPerformed(ActionEvent ae) { * if (getName() == "selectAll") { * selectAll(); * } * else if (getName() == "cancelEditing") { * cancelEditing(); * } * } * } * </pre> * <p> * Subclasses that wish to conditionalize the enabled state should override * <code>isEnabled(Component)</code>, and be aware that the passed in * <code>Component</code> may be null. * * @see javax.swing.Action * @author Scott Violet */
public abstract class UIAction implements Action { private String name; public UIAction(String name) { this.name = name; } public final String getName() { return name; } public Object getValue(String key) { if (key == NAME) { return name; } return null; } // UIAction is not mutable, this does nothing. public void putValue(String key, Object value) { } // UIAction is not mutable, this does nothing. public void setEnabled(boolean b) { }
Cover method for isEnabled(null).
/** * Cover method for <code>isEnabled(null)</code>. */
public final boolean isEnabled() { return accept(null); }
Subclasses that need to conditionalize the enabled state should override this. Be aware that sender may be null.
Params:
  • sender – Widget enabled state is being asked for, may be null.
/** * Subclasses that need to conditionalize the enabled state should * override this. Be aware that <code>sender</code> may be null. * * @param sender Widget enabled state is being asked for, may be null. */
@Override public boolean accept(Object sender) { return true; } // UIAction is not mutable, this does nothing. public void addPropertyChangeListener(PropertyChangeListener listener) { } // UIAction is not mutable, this does nothing. public void removePropertyChangeListener(PropertyChangeListener listener) { } }