org.thdl.util
Class ThdlAbstractAction

java.lang.Object
  |
  +--javax.swing.AbstractAction
        |
        +--org.thdl.util.ThdlAbstractAction

All Implemented Interfaces:

Action, ActionListener, Cloneable, EventListener, Serializable

public class ThdlAbstractAction

extends AbstractAction

This ActionListener is like any other except in the way that it handles exceptions or errors thrown during the execution of actionPerformed(). Because event listeners are on threads, an exception during actionPerformed() is just printed out on the console by java.awt.EventDispatchThread.run(). It does not cause the program to terminate. In our code, it helps developers more quickly get to the root of a problem if the program terminates as soon after a problem as possible. Thus, this class calls System.exit(1) when an exception is throw by theRealActionPerformed(), which is the method that subclasses should implement.

Author:

David Chandler There is a pertinent Usenet thread at http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=utf-8&threadm=6ntgl6%244hl%241%40tarantula.europe.shiva.com&rnum=2&prev=/groups%3Fq%3Dexception%2BactionPerformed%26hl%3Den%26lr%3D%26ie%3DUTF-8%26oe%3Dutf-8%26selm%3D6ntgl6%25244hl%25241%2540tarantula.europe.shiva.com%26rnum%3D2.

See Also:

ThdlActionListener, Serialized Form

Field Summary

Fields inherited from class javax.swing.AbstractAction

changeSupport, enabled

Fields inherited from interface javax.swing.Action

ACCELERATOR_KEY, ACTION_COMMAND_KEY, DEFAULT, LONG_DESCRIPTION, MNEMONIC_KEY, NAME, SHORT_DESCRIPTION, SMALL_ICON

Constructor Summary

ThdlAbstractAction(String s, Icon i)
Just calls the super's constructor with the same args.

Method Summary

void	actionPerformed(ActionEvent e) Subclasses don't override this.
protected void	theRealActionPerformed(ActionEvent e) Subclasses should override this method to do the real action performed.

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

Constructor Detail

ThdlAbstractAction

public ThdlAbstractAction(String s,
                          Icon i)

Just calls the super's constructor with the same args.

Method Detail

actionPerformed

public final void actionPerformed(ActionEvent e)

Subclasses don't override this. Instead, they override theRealActionPerformed().

See Also:

actionPerformed(ActionEvent)

theRealActionPerformed

protected void theRealActionPerformed(ActionEvent e)
                               throws Throwable

Subclasses should override this method to do the real action performed.

Throwable

See Also:

actionPerformed(ActionEvent)