org.mov.chart.graph
Class ExpMovingAverageGraphUI

java.lang.Object
  org.mov.chart.graph.ExpMovingAverageGraphUI

All Implemented Interfaces:

GraphUI

public class ExpMovingAverageGraphUI
extends java.lang.Object
implements GraphUI

The exponential smoothed moving average graph user interface.

Author:

Andrew Leppard

See Also:

ExpMovingAverageGraph

Constructor Summary

ExpMovingAverageGraphUI(java.util.HashMap settings)
Create a new exponential smoothed moving average user interface with the initial settings.

Method Summary

java.lang.String	checkSettings() Check the current settings displayed in the user interface.
javax.swing.JPanel	getPanel() Return the user interface.
static int	getPeriod(java.util.HashMap settings) Retrieve the period from the settings hashmap.
java.util.HashMap	getSettings() Return the current settings displayed in the user interface.
static double	getSmoothingConstant(java.util.HashMap settings) Retrieve the smoothing constant from the settings hashmap.
void	setSettings(java.util.HashMap settings) Display the given settings in the user interface.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpMovingAverageGraphUI

public ExpMovingAverageGraphUI(java.util.HashMap settings)

Create a new exponential smoothed moving average user interface with the initial settings.

Parameters:

settings - the initial settings

Method Detail

checkSettings

public java.lang.String checkSettings()

Description copied from interface: GraphUI

Check the current settings displayed in the user interface. Return an error message if the settings are invalid.

Specified by:

checkSettings in interface GraphUI

Returns:

the error message or null if the settings are valid

getSettings

public java.util.HashMap getSettings()

Description copied from interface: GraphUI

Return the current settings displayed in the user interface.

Specified by:

getSettings in interface GraphUI

Returns:

current settings

setSettings

public void setSettings(java.util.HashMap settings)

Description copied from interface: GraphUI

Display the given settings in the user interface.

Specified by:

setSettings in interface GraphUI

Parameters:

settings - the new settings

getPanel

public javax.swing.JPanel getPanel()

Description copied from interface: GraphUI

Return the user interface.

Specified by:

getPanel in interface GraphUI

Returns:

the user interface

getPeriod

public static int getPeriod(java.util.HashMap settings)

Retrieve the period from the settings hashmap. If the hashmap is empty, then return the default period.

Parameters:

settings - the settings

Returns:

the period

getSmoothingConstant

public static double getSmoothingConstant(java.util.HashMap settings)

Retrieve the smoothing constant from the settings hashmap. If the hashmap is empty, then return the default smoothing constant.

Parameters:

settings - the settings

Returns:

the smoothign constant