abstractbutton.java

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    {
      return null; // TODO
    }

    public int getAccessibleActionCount()
    {
      return 0; // TODO
    }

    public String getAccessibleActionDescription(int value0)
    {
      return null; // TODO
    }

    public boolean doAccessibleAction(int value0)
    {
      return false; // TODO
    }

    public Number getCurrentAccessibleValue()
    {
      return null; // TODO
    }

    public boolean setCurrentAccessibleValue(Number value0)
    {
      return false; // TODO
    }

    public Number getMinimumAccessibleValue()
    {
      return null; // TODO
    }

    public Number getMaximumAccessibleValue()
    {
      return null; // TODO
    }

    public AccessibleText getAccessibleText()
    {
      return null; // TODO
    }

    public int getIndexAtPoint(Point value0)
    {
      return 0; // TODO
    }

    public Rectangle getCharacterBounds(int value0)
    {
      return null; // TODO
    }

    public int getCharCount()
    {
      return 0; // TODO
    }

    public int getCaretPosition()
    {
      return 0; // TODO
    }

    public String getAtIndex(int value0, int value1)
    {
      return null; // TODO
    }

    public String getAfterIndex(int value0, int value1)
    {
      return null; // TODO
    }

    public String getBeforeIndex(int value0, int value1)
    {
      return null; // TODO
    }

    public AttributeSet getCharacterAttribute(int value0)
    {
      return null; // TODO
    }

    public int getSelectionStart()
    {
      return 0; // TODO
    }

    public int getSelectionEnd()
    {
      return 0; // TODO
    }

    public String getSelectedText()
    {
      return null; // TODO
    }

    private Rectangle getTextRectangle()
    {
      return null; // TODO
    }
  }

  /**
   * Creates a new AbstractButton object. Subclasses should call the following
   * sequence in their constructor in order to initialize the button correctly:
   * <pre>
   * super();
   * init(text, icon);
   * </pre>
   *
   * The {@link #init(String, Icon)} method is not called automatically by this
   * constructor.
   *
   * @see #init(String, Icon)
   */
  public AbstractButton()
  {
    actionListener = createActionListener();
    changeListener = createChangeListener();
    itemListener = createItemListener();

    horizontalAlignment = CENTER;
    horizontalTextPosition = TRAILING;
    verticalAlignment = CENTER;
    verticalTextPosition = CENTER;
    borderPainted = true;
    contentAreaFilled = true;
    focusPainted = true;
    setFocusable(true);
    setAlignmentX(CENTER_ALIGNMENT);
    setAlignmentY(CENTER_ALIGNMENT);
    setDisplayedMnemonicIndex(-1);
    setOpaque(true);
    text = "";
    updateUI();
  }

  /**
   * Get the model the button is currently using.
   *
   * @return The current model
   */
  public ButtonModel getModel()
  {
      return model;
  }

  /**
   * Set the model the button is currently using. This un-registers all 
   * listeners associated with the current model, and re-registers them
   * with the new model.
   *
   * @param newModel The new model
   */
  public void setModel(ButtonModel newModel)
  {
    if (newModel == model)
      return;

    if (model != null)
      {
        model.removeActionListener(actionListener);
        model.removeChangeListener(changeListener);
        model.removeItemListener(itemListener);
      }
    ButtonModel old = model;
    model = newModel;
    if (model != null)
      {
        model.addActionListener(actionListener);
        model.addChangeListener(changeListener);
        model.addItemListener(itemListener);
      }
    firePropertyChange(MODEL_CHANGED_PROPERTY, old, model);
    revalidate();
    repaint();
  }

 protected void init(String text, Icon icon) 
 {
    // If text is null, we fall back to the empty
    // string (which is set using AbstractButton's
    // constructor).
    // This way the behavior of the JDK is matched.
    if(text != null)
        this.text = text;

    if (icon != null)
      default_icon = icon;
 }
 
  /**
   * <p>Returns the action command string for this button's model.</p>
   *
   * <p>If the action command was set to <code>null</code>, the button's
   * text (label) is returned instead.</p>
   *
   * @return The current action command string from the button's model
   */
  public String getActionCommand()
  {
    String ac = model.getActionCommand();
    if (ac != null)
      return ac;
    else
      return text;
  }

  /**
   * Sets the action command string for this button's model.
   *
   * @param actionCommand The new action command string to set in the button's
   * model.
   */
  public void setActionCommand(String actionCommand)
  {
    if (model != null)
      model.setActionCommand(actionCommand);
  }

  /**
   * Adds an ActionListener to the button's listener list. When the
   * button's model is clicked it fires an ActionEvent, and these
   * listeners will be called.
   *
   * @param l The new listener to add
   */
  public void addActionListener(ActionListener l)
  {
    listenerList.add(ActionListener.class, l);
  }

  /**
   * Removes an ActionListener from the button's listener list.
   *
   * @param l The listener to remove
   */
  public void removeActionListener(ActionListener l)
  {
    listenerList.remove(ActionListener.class, l);
  }

  /**
   * Returns all added <code>ActionListener</code> objects.
   * 
   * @return an array of listeners
   * 
   * @since 1.4
   */
  public ActionListener[] getActionListeners()
  {
    return (ActionListener[]) listenerList.getListeners(ActionListener.class);
  }

  /**
   * Adds an ItemListener to the button's listener list. When the button's
   * model changes state (between any of ARMED, ENABLED, PRESSED, ROLLOVER
   * or SELECTED) it fires an ItemEvent, and these listeners will be
   * called.
   *
   * @param l The new listener to add
   */
  public void addItemListener(ItemListener l)
  {
    listenerList.add(ItemListener.class, l);
  }

  /**
   * Removes an ItemListener from the button's listener list.
   *
   * @param l The listener to remove
   */
  public void removeItemListener(ItemListener l)
  {
    listenerList.remove(ItemListener.class, l);
  }

  /**
   * Returns all added <code>ItemListener</code> objects.
   * 
   * @return an array of listeners
   * 
   * @since 1.4
   */
  public ItemListener[] getItemListeners()
  {
    return (ItemListener[]) listenerList.getListeners(ItemListener.class);
  }

  /**
   * Adds a ChangeListener to the button's listener list. When the button's
   * model changes any of its (non-bound) properties, these listeners will be
   * called. 
   *
   * @param l The new listener to add
   */
  public void addChangeListener(ChangeListener l)
  {
    listenerList.add(ChangeListener.class, l);
  }

  /**
   * Removes a ChangeListener from the button's listener list.
   *
   * @param l The listener to remove
   */
  public void removeChangeListener(ChangeListener l)
  {
    listenerList.remove(ChangeListener.class, l);
  }

  /**
   * Returns all added <code>ChangeListener</code> objects.
   * 
   * @return an array of listeners
   * 
   * @since 1.4
   */
  public ChangeListener[] getChangeListeners()
  {
    return (ChangeListener[]) listenerList.getListeners(ChangeListener.class);
  }

  /**
   * Calls {@link ItemListener#itemStateChanged} on each ItemListener in
   * the button's listener list.
   *
   * @param e The event signifying that the button's model changed state
   */
  protected void fireItemStateChanged(ItemEvent e)
  {
    e.setSource(this);
    ItemListener[] listeners = getItemListeners();
 
    for (int i = 0; i < listeners.length; i++)
      listeners[i].itemStateChanged(e);
  }

  /**
   * Calls {@link ActionListener#actionPerformed} on each {@link
   * ActionListener} in the button's listener list.
   *
   * @param e The event signifying that the button's model was clicked
   */
  protected void fireActionPerformed(ActionEvent e)
  {
	// Dispatch a copy of the given ActionEvent in order to
	// set the source and action command correctly.
    ActionEvent ae = new ActionEvent(
        this,
        e.getID(),
        getActionCommand(),
        e.getWhen(),
        e.getModifiers());

    ActionListener[] listeners = getActionListeners();
    
    for (int i = 0; i < listeners.length; i++)
      listeners[i].actionPerformed(ae);
  }

  /**
   * Calls {@link ChangeListener#stateChanged} on each {@link ChangeListener}
   * in the button's listener list.
   */
  protected void fireStateChanged()
  {
    ChangeListener[] listeners = getChangeListeners();

    for (int i = 0; i < listeners.length; i++)
      listeners[i].stateChanged(changeEvent);
  }

  /**
   * Get the current keyboard mnemonic value. This value corresponds to a
   * single key code (one of the {@link java.awt.event.KeyEvent} VK_*
   * codes) and is used to activate the button when pressed in conjunction
   * with the "mouseless modifier" of the button's look and feel class, and
   * when focus is in one of the button's ancestors.
   *
   * @return The button's current keyboard mnemonic
   */
  public int getMnemonic()
  {
    ButtonModel mod = getModel();
    if (mod != null)
      return mod.getMnemonic();
    return -1;
  }

  /**
   * Set the current keyboard mnemonic value. This value corresponds to a
   * single key code (one of the {@link java.awt.event.KeyEvent} VK_*
   * codes) and is used to activate the button when pressed in conjunction
   * with the "mouseless modifier" of the button's look and feel class, and
   * when focus is in one of the button's ancestors.
   *
   * @param mne A new mnemonic to use for the button
   */
  public void setMnemonic(char mne)
  {
    setMnemonic((int) mne);
  }

  /**