info.monitorenter.gui.chart.rangepolicies
Class ARangePolicy

java.lang.Object
  info.monitorenter.gui.chart.rangepolicies.ARangePolicy

All Implemented Interfaces:

IRangePolicy, Serializable

Direct Known Subclasses:

RangePolicyFixedViewport, RangePolicyHighestValues, RangePolicyHighestValuesForcedMin, RangePolicyMinimumViewport, RangePolicyUnbounded

public abstract class ARangePolicy
extends Object
implements IRangePolicy

A default superclass for IRangePolicy implementations that adds support for setting and getting ranges.

Should be used by any implementation that really works on the data of ranges (not unbounded ranges). Subclasses should access the internal member range or use getRange().

Version:

$Revision: 1.5 $

Author:

Achim Westermann

See Also:

Serialized Form

Field Summary

protected PropertyChangeSupport

m_propertyChangeSupport The instance that add support for firing PropertyChangeEvents and maintaining PropertyChangeListeners.

Fields inherited from interface info.monitorenter.gui.chart.IRangePolicy

PROPERTY_RANGE, PROPERTY_RANGE_MAX, PROPERTY_RANGE_MIN

Constructor Summary

ARangePolicy()
Creates a range policy with an unconfigured range (Range.RANGE_UNBOUNDED).

ARangePolicy(Range range)
Creates a range policy backed by the given range.

Method Summary

void	addPropertyChangeListener(String propertyName, PropertyChangeListener listener) Adds a property change listener.
protected void	firePropertyChange(String property, Object oldvalue, Object newvalue) Fires a property change event to the registered listeners.
PropertyChangeListener[]	getPropertyChangeListeners(String property) Returns all property change listeners for the given property.
Range	getRange() Returns the internal range that is used to decide about the policy of displaying the chart.
void	removePropertyChangeListener(PropertyChangeListener listener, String property) Deregisters a property change listener that has been registerd for listening on the given property.
void	removePropertyChangeListener(String property, PropertyChangeListener listener) Removes a property change listener for listening on the given property.
void	setRange(Range range) Sets the internal range that is used to decide about the policy of displaying the chart.

Methods inherited from class java.lang.Object

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

Methods inherited from interface info.monitorenter.gui.chart.IRangePolicy

getMax, getMin

Field Detail

m_propertyChangeSupport

protected PropertyChangeSupport m_propertyChangeSupport

The instance that add support for firing PropertyChangeEvents and maintaining PropertyChangeListeners. PropertyChangeListener instances.

Constructor Detail

ARangePolicy

public ARangePolicy()

Creates a range policy with an unconfigured range (Range.RANGE_UNBOUNDED).

ARangePolicy

public ARangePolicy(Range range)

Creates a range policy backed by the given range.

Parameters:

range - the range that may be used to decide about the policy of displaying the range.

Method Detail

addPropertyChangeListener

public final void addPropertyChangeListener(String propertyName,
                                            PropertyChangeListener listener)

Adds a property change listener.

Specified by:

addPropertyChangeListener in interface IRangePolicy

Parameters:

propertyName - The name of the property to listen on.

listener - The PropertyChangeListener to be added.

See Also:

ITrace2D.addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)

firePropertyChange

protected final void firePropertyChange(String property,
                                        Object oldvalue,
                                        Object newvalue)

Fires a property change event to the registered listeners.

Parameters:

property - one of the PROPERTY_XXX constants defined in ITrace2D.

oldvalue - the old value of the property.

newvalue - the new value of the property.

getPropertyChangeListeners

public PropertyChangeListener[] getPropertyChangeListeners(String property)

Description copied from interface: IRangePolicy

Returns all property change listeners for the given property.

Specified by:

getPropertyChangeListeners in interface IRangePolicy

Parameters:

property - one of the constants with teh PROPERTY_ prefix defined in this class or subclasses.

Returns:

the property change listeners for the given property.

See Also:

IRangePolicy.getPropertyChangeListeners(java.lang.String)

getRange

public final Range getRange()

Returns the internal range that is used to decide about the policy of displaying the chart.

Specified by:

getRange in interface IRangePolicy

Returns:

the internal range that may be taken into account for returning bounds from IRangePolicy.getMax(double, double) and IRangePolicy.getMax(double, double).

removePropertyChangeListener

public void removePropertyChangeListener(PropertyChangeListener listener,
                                         String property)

Description copied from interface: IRangePolicy

Deregisters a property change listener that has been registerd for listening on the given property.

Specified by:

removePropertyChangeListener in interface IRangePolicy

Parameters:

listener - a listener that will only be informed if the property identified by the argument propertyName changes

property - the property the listener was registered to.

See Also:

IRangePolicy.removePropertyChangeListener(java.beans.PropertyChangeListener, java.lang.String)

removePropertyChangeListener

public void removePropertyChangeListener(String property,
                                         PropertyChangeListener listener)

Description copied from interface: IRangePolicy

Removes a property change listener for listening on the given property.

Specified by:

removePropertyChangeListener in interface IRangePolicy

Parameters:

property - one of the constants with teh PROPERTY_ prefix defined in this class or subclasses.

listener - the listener for this property change.

See Also:

IRangePolicy.removePropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)

setRange

public void setRange(Range range)

Sets the internal range that is used to decide about the policy of displaying the chart.

Specified by:

setRange in interface IRangePolicy

Parameters:

range - the internal range that may be taken into account for returning bounds from IRangePolicy.getMax(double, double) and IRangePolicy.getMax(double, double).