[kepler-dev] Kepler actionListeners/Actions

Matthew Brooke brooke at nceas.ucsb.edu
Tue Feb 28 10:35:12 PST 2006

Here's how to write Action classes for Kepler (This allows your code to 
be reusable and easily incorporated into the new menu framework when the 
time comes):

1) Write a public Action class that extends 
ptolemy.vergil.toolbox.FigureAction, and add your actual action code to 
the method:

public void actionPerformed(ActionEvent e)

(this is an abstract method, so it must be implemented in your class)

- See example code below for AddToLibAction

2) add the action to your button (or whatever is going to trigger it) by 
calling the "setAction(myAction) method in your code:

Action addToLibAction = new AddToLibAction Action(basicGraphFrame);
//see example code below for AddToLibAction
JButton addButton = new JButton();

That's it!  Note that the button/component will take its Label text from 
the action (see below)

// Example code for AddToLibAction

public class AddToLibAction extends FigureAction {

// Display Text pulled from resourcebundle:
   private static String DISPLAY_NAME
     = StaticResources.getDisplayString("actions.addtolib.displayName", "");
   private static String TOOLTIP
     = StaticResources.getDisplayString("actions.addtolib.tooltip", "");

    * Constructor
    * @param parent the "frame" (derived from ptolemy.gui.Top)
    * where the menu is being added.
   public AddToLibAction (TableauFrame parent) {
     this.parent = parent;
     this.putValue(Action.NAME, DISPLAY_NAME);
     this.putValue("tooltip", TOOLTIP);

    * Invoked when an action occurs.
    *@param  e  ActionEvent
   public void actionPerformed(ActionEvent e) {

     //YOUR CODE GOES HERE - like:
     //dialog = new MyDialog(parent);
     //dialog .setVisible(true);


Matthew Brooke, Ph.D.
Marine Sciences Research Building, Room #3407
University of California
Santa Barbara, CA  93106-6150
ph: (805) 893-7108   fx: 805-893-8062
brooke at nceas.ucsb.edu

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