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Class SpeedSwitch.SpeedSwitch

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Container
                   |
                   +----java.awt.Panel
                           |
                           +----java.applet.Applet
                                   |
                                   +----SpeedSwitch.SpeedSwitch

public class SpeedSwitch

extends Applet

implements Runnable, MouseListener

SpeedSwitch()

addPropertyChangeListener(PropertyChangeListener)

The specified PropertyChangeListeners propertyChange method will be called each time the value of any bound property is changed.

drawSwitchIfLoaded(Graphics)

If all the images have loaded without error, get the state property and render the appropriate image.

drawSwitchOnEvent(int, int)

Intended to be called on a mouse click.

getState()

Getter for state.

init()

Load the images for the switch, and add them to a MediaTracker object.

mouseClicked(MouseEvent)

mouseEntered(MouseEvent)

mouseExited(MouseEvent)

mousePressed(MouseEvent)

mouseReleased(MouseEvent)

Call drawSwitchOnEvent to set the state.

paint(Graphics)

Just call drawSwitchIfLoaded(g)

removePropertyChangeListener(PropertyChangeListener)

Remove this PropertyChangeListener from the JellyBeans internal list.

run()

Keep repainting the image.

setState(String)

Setter for state.

start()

stop()

update(Graphics)

Call paint(g) without redrawing first.

 public SpeedSwitch()

 public void init()

Load the images for the switch, and add them to a MediaTracker object.

Overrides:

init in class Applet

 public void start()

Overrides:

start in class Applet

 public void paint(Graphics g)

Just call drawSwitchIfLoaded(g)

Overrides:

paint in class Container

 public void drawSwitchIfLoaded(Graphics g) throws Exception

If all the images have loaded without error, get the state property and render the appropriate image.

Throws: if

an error in loading any image.

 public void drawSwitchOnEvent(int xPos,
                               int yPos)

Intended to be called on a mouse click. Sets the state depending on the position of the click.

Parameters:

xPos — the x coordinate of the click.

yPos — the y coordinate of the click.

 public void run()

Keep repainting the image.

 public void stop()

Overrides:

stop in class Applet

 public void update(Graphics g)

Call paint(g) without redrawing first.

Overrides:

update in class Container

 public void mouseClicked(MouseEvent e)

 public void mousePressed(MouseEvent e)

 public void mouseReleased(MouseEvent e)

Call drawSwitchOnEvent to set the state.

 public void mouseEntered(MouseEvent e)

 public void mouseExited(MouseEvent e)

 public String getState()

Getter for state.

 public void setState(String newState)

Setter for state. Fires the property change for the information of bean building tools.

Parameters:

newState — the new state of the speed switch.

 public void addPropertyChangeListener(PropertyChangeListener l)

The specified PropertyChangeListeners propertyChange method will be called each time the value of any bound property is changed. The PropertyListener object is addded to a list of PropertyChangeListeners managed by the JellyBean, it can be removed with removePropertyChangeListener. Note: the JavaBeans specification does not require PropertyChangeListeners to run in any particular order.

Parameters:

l — the PropertyChangeListener

See Also:

removePropertyChangeListener

 public void removePropertyChangeListener(PropertyChangeListener l)

Remove this PropertyChangeListener from the JellyBeans internal list. If the PropertyChangeListener isn't on the list, silently do nothing.

Parameters:

l — the PropertyChangeListener

See Also:

addPropertyChangeListener

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