uk.ac.starlink.ttools.plot2.config

Class DoubleArrayConfigKey

java.lang.Object

uk.ac.starlink.ttools.plot2.config.ConfigKey<double[]>

uk.ac.starlink.ttools.plot2.config.DoubleArrayConfigKey

public class DoubleArrayConfigKey
extends ConfigKey<double[]>

Config key for a list of floating point values.

Since:

9 Jan 2017

Author:

Mark Taylor

Constructor Summary

Constructors

Constructor and Description
DoubleArrayConfigKey(ConfigMeta meta, double[] dflt) Constructor.

Method Summary

Modifier and Type	Method and Description
Specifier<double[]>	createSpecifier() Constructs a graphical control with which the user can specify a suitable value for association with this key.
double[]	stringToValue(String txt) Decodes a string value to the value type of this key.
String	valueToString(double[] dvals) Reports a value as a string.

Methods inherited from class uk.ac.starlink.ttools.plot2.config.ConfigKey

cast, getDefaultValue, getMeta, getValueClass, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

DoubleArrayConfigKey

public DoubleArrayConfigKey(ConfigMeta meta,
                            double[] dflt)

Constructor.

Parameters:

meta - metadata

dflt - default value

Method Detail

valueToString

public String valueToString(double[] dvals)

Description copied from class: ConfigKey

Reports a value as a string. If at all possible the roundtripping should be possible, so stringToValue(valueToString(v)).equals(v). A null value, if permitted, should be represented as an empty string.

Specified by:

valueToString in class ConfigKey<double[]>

Parameters:

dvals - possible value associated with this key

Returns:

string representation

stringToValue

public double[] stringToValue(String txt)
                       throws ConfigException

Description copied from class: ConfigKey

Decodes a string value to the value type of this key. An empty string should be interpreted as a null value, but this may cause an exception if null is not a permissible value for this key.

Specified by:

stringToValue in class ConfigKey<double[]>

Parameters:

txt - string representation of value

Returns:

value

Throws:

ConfigException

createSpecifier

public Specifier<double[]> createSpecifier()

Description copied from class: ConfigKey

Constructs a graphical control with which the user can specify a suitable value for association with this key.

Specified by:

createSpecifier in class ConfigKey<double[]>

Returns:

new specifier