Class Graphics2DTestPlusButton

java.lang.Object
  Graphics2DTest
      Graphics2DTestPlusButton

public class Graphics2DTestPlusButton

extends Graphics2DTest

This is an extension of the Graphics2DTest example that adds a movable JButton to the canvas. The inner class MovableButtonMouseListener is the most interesting part.

Nested Class Summary

static class

Graphics2DTestPlusButton.MovableButtonMouseListener Class MovableButtonMouseListener extends JFC's MouseInputAdpater to provide handlers for three mouse events: mouse pressed, mouse dragged, and mouse released.

Nested classes inherited from class Graphics2DTest

Graphics2DTest.DrawingCanvas, Graphics2DTest.MousePressedListener, Graphics2DTest.RectShape

Field Summary

protected static javax.swing.JButton	button A movable button on the canvas
protected static boolean	buttonEnabled Current state of the movable button
protected static Graphics2DTestPlusButton.MovableButtonMouseListener	mouseHandler The button mouse handler when it's in the moveable state
protected static java.awt.event.ActionListener	savedButtonActionListener The saved action listener for the movable button
protected static java.awt.event.MouseListener	savedButtonMouseListener The saved mouse listener for the movable button

Fields inherited from class Graphics2DTest

addButton, buttonBox, canvas, delButton, frame, numButton, shapeList, vbox, x, y

Constructor Summary

Graphics2DTestPlusButton()

Method Summary

protected static void	addButtonListener(javax.swing.JButton enableButtonButton) Implement the mouse listener for the "Enable Button" button to toggle the enabled/disabled state of the movable button.
static void	compose2() Construct and compose the add-ons to the parent class -- the movable button and the enable/disable button.
static void	main(java.lang.String[] args) Call the parent compose method, then the local compose method.

Methods inherited from class Graphics2DTest

addButtonListeners, compose

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

button

protected static javax.swing.JButton button

A movable button on the canvas

mouseHandler

protected static Graphics2DTestPlusButton.MovableButtonMouseListener mouseHandler

The button mouse handler when it's in the moveable state

savedButtonActionListener

protected static java.awt.event.ActionListener savedButtonActionListener

The saved action listener for the movable button

savedButtonMouseListener

protected static java.awt.event.MouseListener savedButtonMouseListener

The saved mouse listener for the movable button

buttonEnabled

protected static boolean buttonEnabled

Current state of the movable button

Constructor Detail

Graphics2DTestPlusButton

public Graphics2DTestPlusButton()

Method Detail

compose2

public static void compose2()

Construct and compose the add-ons to the parent class -- the movable button and the enable/disable button.

addButtonListener

protected static void addButtonListener(javax.swing.JButton enableButtonButton)

Implement the mouse listener for the "Enable Button" button to toggle the enabled/disabled state of the movable button. The JComponent.setEnabled method is not used here, since we want to retain the normal visual appearance of the button. Therefore, we perform disable/enable by removing/restoring the action and mouse listeners to the button. New in 1.4 -- when the button is enabled, the call to removeMouseListener(mouseHandler) must be performed, since evidently the general mouse listener overrides (i.e., covers up) the action listener. This was not the case in 1.3. Arghhh :(

main

public static void main(java.lang.String[] args)

Call the parent compose method, then the local compose method. Then repack the top-level frame.