org.openstreetmap.josm.data
Interface Preferences.Setting<T>

Type Parameters:

T - the data type for the value

All Known Implementing Classes:

Preferences.AbstractSetting, Preferences.ListListSetting, Preferences.ListSetting, Preferences.MapListSetting, Preferences.StringSetting

Enclosing class:

Preferences

public static interface Preferences.Setting<T>

Interface for a preference value

Method Summary

Preferences.Setting<T>	getNullInstance() Returns a setting whose value is null.
T	getValue() Returns the value of this setting.
void	visit(Preferences.SettingVisitor visitor) Enable usage of the visitor pattern.

Method Detail

getValue

T getValue()

Returns the value of this setting.

Returns:

the value of this setting

visit

void visit(Preferences.SettingVisitor visitor)

Enable usage of the visitor pattern.

Parameters:

visitor - the visitor

getNullInstance

Preferences.Setting<T> getNullInstance()

Returns a setting whose value is null. Cannot be static, because there is no static inheritance.

Returns:

a Setting object that isn't null itself, but returns null for getValue()