org.w3c.tools.widgets
Class ImageButton

java.lang.Object
  java.awt.Component
      java.awt.Canvas
          org.w3c.tools.widgets.ImageButton

All Implemented Interfaces:

java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, javax.accessibility.Accessible

public class ImageButton
extends java.awt.Canvas

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.awt.Canvas

java.awt.Canvas.AccessibleAWTCanvas

Nested classes/interfaces inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy

Field Summary

protected java.awt.Image	currentImg
protected java.awt.Image	img1
protected java.awt.Image	img2
protected boolean	switchable

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

ImageButton(java.awt.Image img)
Construct an ImageButton with no action command

ImageButton(java.awt.Image img1, java.awt.Image img2)
Construct an ImageButton with the specified action command

ImageButton(java.awt.Image img1, java.awt.Image img2, java.lang.String command)
Construct an ImageButton with the specified action command

ImageButton(java.awt.Image img, java.lang.String command)
Construct an ImageButton with the specified action command

Method Summary

void	addActionListener(java.awt.event.ActionListener al) Adds an action listener to this ImageButton
protected void	fireActionEvent() fire a new ActionEvent and process it, if some listeners are listening
java.lang.String	getActionCommand() Returns the action command String
java.awt.Dimension	getMinimumSize() Returns the minimum size of the ImageButton
java.awt.Dimension	getPreferredSize() Returns the preferred size of the ImageButton
boolean	imageUpdate(java.awt.Image img, int flaginfo, int x, int y, int width, int height) called when more informations about the image are available.
protected void	initSize() Gets the size of the Image to calculate the minimum size of the Button
void	paint(java.awt.Graphics g) paint the ImageButton in its initial shape
protected void	paintShadow(boolean raised) paints the ImageButton using double buffering
void	removeActionListener(java.awt.event.ActionListener al) Removes an action listener to this ImageButton
void	setActionCommand(java.lang.String command) Sets the action command String used when an ActionEvent is fired
void	switchImage()

Methods inherited from class java.awt.Canvas

addNotify, createBufferStrategy, createBufferStrategy, getAccessibleContext, getBufferStrategy, update

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, deliverEvent, disable, disableEvents, dispatchEvent, doLayout, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getAlignmentX, getAlignmentY, getBackground, getBounds, getBounds, getColorModel, getComponentAt, getComponentAt, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeys, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getListeners, getLocale, getLocation, getLocation, getLocationOnScreen, getMaximumSize, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, inside, invalidate, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusCycleRoot, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, layout, list, list, list, list, list, locate, location, lostFocus, minimumSize, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, paramString, postEvent, preferredSize, prepareImage, prepareImage, print, printAll, processComponentEvent, processEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeys, setFocusTraversalKeysEnabled, setFont, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setMinimumSize, setName, setPreferredSize, setSize, setSize, setVisible, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle, validate

Methods inherited from class java.lang.Object

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

Field Detail

switchable

protected boolean switchable

img1

protected java.awt.Image img1

img2

protected java.awt.Image img2

currentImg

protected java.awt.Image currentImg

Constructor Detail

ImageButton

public ImageButton(java.awt.Image img1,
                   java.awt.Image img2,
                   java.lang.String command)

Construct an ImageButton with the specified action command

Parameters:

img1 - The image of this ImageButton

img2 - The image of this ImageButton

command - The action command String

ImageButton

public ImageButton(java.awt.Image img1,
                   java.awt.Image img2)

Construct an ImageButton with the specified action command

Parameters:

img1 - The image of this ImageButton

realesed - The image of this ImageButton

ImageButton

public ImageButton(java.awt.Image img,
                   java.lang.String command)

Construct an ImageButton with the specified action command

Parameters:

img - The image of this ImageButton

command - The action command String

ImageButton

public ImageButton(java.awt.Image img)

Construct an ImageButton with no action command

Parameters:

img - The image of this ImageButton

Method Detail

initSize

protected void initSize()

Gets the size of the Image to calculate the minimum size of the Button

switchImage

public void switchImage()

paint

public void paint(java.awt.Graphics g)

paint the ImageButton in its initial shape

Overrides:

paint in class java.awt.Canvas

Parameters:

g - A Graphics

paintShadow

protected void paintShadow(boolean raised)

paints the ImageButton using double buffering

Parameters:

raised - A boolean which shows the state of the button

imageUpdate

public boolean imageUpdate(java.awt.Image img,
                           int flaginfo,
                           int x,
                           int y,
                           int width,
                           int height)

called when more informations about the image are available. When the size is available, the ImageButton notifies its container that the size may have changed.

Specified by:

imageUpdate in interface java.awt.image.ImageObserver

Overrides:

imageUpdate in class java.awt.Component

See Also:

ImageObserver

getMinimumSize

public java.awt.Dimension getMinimumSize()

Returns the minimum size of the ImageButton

Overrides:

getMinimumSize in class java.awt.Component

getPreferredSize

public java.awt.Dimension getPreferredSize()

Returns the preferred size of the ImageButton

Overrides:

getPreferredSize in class java.awt.Component

setActionCommand

public void setActionCommand(java.lang.String command)

Sets the action command String used when an ActionEvent is fired

Parameters:

command - The command String

getActionCommand

public java.lang.String getActionCommand()

Returns the action command String

addActionListener

public void addActionListener(java.awt.event.ActionListener al)

Adds an action listener to this ImageButton

Parameters:

al - The ActionListener

removeActionListener

public void removeActionListener(java.awt.event.ActionListener al)

Removes an action listener to this ImageButton

Parameters:

al - The ActionListener

fireActionEvent

protected void fireActionEvent()

fire a new ActionEvent and process it, if some listeners are listening