Package jmri.managers

Class ProxyLightManager

java.lang.Object
jmri.beans.PropertyChangeSupport
jmri.beans.VetoableChangeSupport
jmri.managers.AbstractProxyManager<E>
jmri.managers.AbstractProvidingProxyManager<Light>
jmri.managers.ProxyLightManager
All Implemented Interfaces:
PropertyChangeListener, EventListener, PropertyChangeFirer, PropertyChangeProvider, SilenceablePropertyChangeProvider, VetoableChangeFirer, VetoableChangeProvider, LightManager, Manager<Light>, Manager.ManagerDataListener<Light>, NameIncrementingManager, ProvidingManager<Light>, ProxyManager<Light>
public class ProxyLightManager extends AbstractProvidingProxyManager<Light> implements LightManager
Implementation of a LightManager that can serve as a proxy for multiple system-specific implementations.

  • Constructor Details

  • Method Details

    • getXMLOrder

      public int getXMLOrder()
      Description copied from interface: Manager
      Determine the order that types should be written when storing panel files. Uses one of the constants defined in this class.

      Yes, that's an overly-centralized methodology, but it works for now.

      Specified by:
      getXMLOrder in interface Manager<Light>
      Returns:
      write order for this Manager; larger is later.

    • makeInternalManager

      protected AbstractManager<Light> makeInternalManager()
      Description copied from class: AbstractProxyManager
      Create specific internal manager as needed for concrete type.
      Specified by:
      makeInternalManager in class AbstractProxyManager<Light>
      Returns:
      an internal manager

    • getLight

      public Light getLight(@Nonnull String name)
      Locate via user name, then system name if needed.
      Specified by:
      getLight in interface LightManager
      Parameters:
      name - User name, system name, or address which can be promoted to system name
      Returns:
      Null if nothing by that name exists

    • makeBean

      @Nonnull protected Light makeBean(Manager<Light> manager, String systemName, String userName) throws IllegalArgumentException
      Defer creation of the proper type to the subclass.
      Specified by:
      makeBean in class AbstractProvidingProxyManager<Light>
      Parameters:
      manager - the manager to invoke
      systemName - the system name
      userName - the user name
      Returns:
      a bean
      Throws:
      IllegalArgumentException - if unable to make.

    • provide

      @Nonnull public Light provide(@Nonnull String name) throws IllegalArgumentException
      Get an existing instance via user name, then system name; if no matching instance is found, create a new NameBean from the system name.

      If the name is a valid system name, it will be used for the new NamedBean. Otherwise, the Manager.makeSystemName(java.lang.String) method will attempt to turn it into a valid system name which the manager will attempt to use. If that fails, an exception is thrown.

      This is similar to the specific methods found in certain type-specific managers: TurnoutManager.provideTurnout(java.lang.String), SensorManager.provideSensor(java.lang.String), et al. Those might be more mnemonic; this one is more generic. Neither is preferred nor deprecated; use your choice.

      Specified by:
      provide in interface LightManager
      Specified by:
      provide in interface ProvidingManager<Light>
      Parameters:
      name - User name, system name, or address which can be promoted to system name
      Returns:
      Never null
      Throws:
      IllegalArgumentException - if NamedBean doesn't already exist and the manager cannot create it due to an illegal name or name that can't be parsed.

    • provideLight

      @Nonnull public Light provideLight(@Nonnull String name) throws IllegalArgumentException
      Locate via user name, then system name if needed. If that fails, create a new Light: If the name is a valid system name, it will be used for the new Light. Otherwise, the makeSystemName method will attempt to turn it into a valid system name.
      Specified by:
      provideLight in interface LightManager
      Parameters:
      name - User name, system name, or address which can be promoted to system name
      Returns:
      Never null under normal circumstances
      Throws:
      IllegalArgumentException - when needed

    • newLight

      @Nonnull public Light newLight(@Nonnull String systemName, String userName) throws IllegalArgumentException
      Return a Light with the specified user or system name. Lookup Light by UserName, then Provide New Light by SystemName. Note that two calls with the same arguments will get the same instance; there is only one Light object representing a given physical Light and therefore only one with a specific system or user name.

      This will always return a valid object reference; a new object will be created if necessary. In that case:

      • If a null reference is given for user name, no user name will be associated with the Light object created; a valid system name must be provided
      • If both names are provided, the system name defines the hardware access of the desired sensor, and the user address is associated with it. The system name must be valid.
      Note that it is possible to make an inconsistent request if both addresses are provided, but the given values are associated with different objects. This is a problem, and we don't have a good solution except to issue warnings. This will mostly happen if you're creating Lights when you should be looking them up.
      Specified by:
      newLight in interface LightManager
      Parameters:
      systemName - the desired system name
      userName - the desired user name
      Returns:
      requested Light object (never null)
      Throws:
      IllegalArgumentException - if cannot create the Light due to e.g. an illegal name or name that can't be parsed.

    • validSystemNameConfig

      public boolean validSystemNameConfig(@Nonnull String systemName)
      Validate system name against the hardware configuration Locate a system specific LightManager based on a system name.
      Specified by:
      validSystemNameConfig in interface LightManager
      Parameters:
      systemName - the system name
      Returns:
      if a manager is found, return its determination of validity of system name format relative to the hardware configuration; false if no manager exists.

    • convertSystemNameToAlternate

      @Nonnull public String convertSystemNameToAlternate(@Nonnull String systemName)
      Convert a system name to an alternate format Locate a system specfic LightManager based on a system name. Returns "" if no manager exists. If a manager is found, return its determination of an alternate system name
      Specified by:
      convertSystemNameToAlternate in interface LightManager
      Parameters:
      systemName - the system name to convert
      Returns:
      an alternate name

    • activateAllLights

      public void activateAllLights()
      Activate the control mechanism for each Light controlled by this LightManager. Relay this call to all LightManagers.
      Specified by:
      activateAllLights in interface LightManager

    • supportsVariableLights

      public boolean supportsVariableLights(@Nonnull String systemName)
      Responds 'true' if Light Manager is for a System that supports variable Lights. Returns false if no manager exists. If a manager is found, return its determination of support for variable lights.
      Specified by:
      supportsVariableLights in interface LightManager
      Parameters:
      systemName - the system name
      Returns:
      true if variable lights are supported; false otherwise

    • allowMultipleAdditions

      public boolean allowMultipleAdditions(@Nonnull String systemName)
      A method that determines if it is possible to add a range of lights in numerical order eg 11 thru 18, primarily used to show/not show the add range box in the add Light window.
      Specified by:
      allowMultipleAdditions in interface NameIncrementingManager
      Parameters:
      systemName - the system name to check against; appears to be ignored in all implementations
      Returns:
      true if possible; false otherwise

    • getBeanTypeHandled

      @Nonnull public String getBeanTypeHandled(boolean plural)
      Description copied from interface: Manager
      Get the user-readable name of the type of NamedBean handled by this manager.

      For instance, in the code where we are dealing with just a bean and a message that needs to be passed to the user or in a log.

      Specified by:
      getBeanTypeHandled in interface Manager<Light>
      Parameters:
      plural - true to return plural form of the type; false to return singular form
      Returns:
      a string of the bean type that the manager handles, eg Turnout, Sensor etc

    • getNamedBeanClass

      public Class<Light> getNamedBeanClass()
      Get the class of NamedBean supported by this Manager. This should be the generic class used in the Manager's class declaration.
      Specified by:
      getNamedBeanClass in interface Manager<Light>
      Returns:
      the class supported by this Manager.