JSci.instruments
Interface PositionControl

All Superinterfaces:

Control

All Known Implementing Classes:

PositionControlAdapter

public interface PositionControl

extends Control

Describes a mechanical device that can control the position of something

Method Summary

void	addChangeListener(javax.swing.event.ChangeListener l) Adds a ChangeListener to the model's listener list.
double	getActualPosition() get the actual position of the device.
javax.swing.event.ChangeListener[]	getChangeListeners() Returns an array of all the ChangeListeners added to this PositionControl with addChangeListener().
java.awt.Component	getControlComponent() get a Component through which we can control the position
java.util.EventListener[]	getListeners(java.lang.Class listenerType) Return an array of all the listeners of the given type that were added to this PositionControl.
double	getMaximum() get the maximum position
double	getMinimum() get the minimum position
double	getPosition() get the position that must be reached.
java.lang.String	getUnit() get a String with the description of the units used for all the values.
void	removeChangeListener(javax.swing.event.ChangeListener l) Removes a ChangeListener from the model's listener list.
void	setPosition(double p) set the position
void	sleep() sleeps for the time needed to stabilize the position.

Method Detail

setPosition

public void setPosition(double p)

set the position

Parameters:

p - the position

getPosition

public double getPosition()

get the position that must be reached. Since the mechanical device needs some time to reach the position, getPosition() can be different from getActualPosition()

Returns:

the position that must be reached

getActualPosition

public double getActualPosition()

get the actual position of the device. Since the mechanical device needs some time to reach the position, getPosition() can be different from getActualPosition()

Returns:

the actual position

getMinimum

public double getMinimum()

get the minimum position

Returns:

the minimum position

getMaximum

public double getMaximum()

get the maximum position

Returns:

the maximum position

sleep

public void sleep()

sleeps for the time needed to stabilize the position.

getControlComponent

public java.awt.Component getControlComponent()

get a Component through which we can control the position

Specified by:

getControlComponent in interface Control

Returns:

the Component with the controls for the position

getUnit

public java.lang.String getUnit()

get a String with the description of the units used for all the values.

Returns:

the unit

addChangeListener

public void addChangeListener(javax.swing.event.ChangeListener l)

Adds a ChangeListener to the model's listener list. The ChangeListeners must be notified when the models value changes.

Parameters:

l - the ChangeListener to add

See Also:

removeChangeListener(javax.swing.event.ChangeListener)

removeChangeListener

public void removeChangeListener(javax.swing.event.ChangeListener l)

Removes a ChangeListener from the model's listener list.

Parameters:

l - the ChangeListener to remove

See Also:

addChangeListener(javax.swing.event.ChangeListener)

getChangeListeners

public javax.swing.event.ChangeListener[] getChangeListeners()

Returns an array of all the ChangeListeners added to this PositionControl with addChangeListener().

Returns:

all of the ChangeListeners added or an empty array if no listeners have been added

getListeners

public java.util.EventListener[] getListeners(java.lang.Class listenerType)

Return an array of all the listeners of the given type that were added to this PositionControl. For example to find all of the ChangeListeners added to this model:

Parameters:

listenerType - the type of listeners to return, e.g. ChangeListener.class

Returns:

all of the objects receiving listenerType notifications from this model