stella.roof

Class Blinker

java.lang.Object

util.PropertyContainer

util.PropertyResources

globals.parameter.AbstractParameter

globals.trigger.AbstractTrigger

globals.trigger.SimpleTrigger

globals.trigger.SimpleEventTrigger

stella.roof.Blinker

All Implemented Interfaces:

EventTrigger, Parameter, ParameterDepending, Trigger, Cloneable, EventListener, ExitCleaning, Initializable, PropertySupplying, Reloadable, ResourceSupplying, Triggering

public class Blinker
extends SimpleEventTrigger
implements ParameterDepending

A blinker is used to provide some sort of a warning signal before the STELLA roof starts moving. Currently a solution with flashing light is favoured, but in principle also a sound-signal is possible.
The blinker provides a method for preceeding a roof-close event, blinkClose() and a method for preceeding a roof-open event, blinkOpen(). Both methods may notify a monitor when the blinking phase ended. Two different methods are used to allow different flashing intervals on open and close which may be desired if quick closing of the roof is more important than proper warning. The trigger value is true if the blinker is in its flashing state.

The blinking interval is definable via the KEY_PHASEON and the KEY_PHASEOFF properties. These give the on/off durations in ms. The entire length of the blinking phase is determined via the KEY_BLINKOPEN and KEY_BLINKCLOSE properties, the required blinker paramter is stated in #KEY_LIGHTSWITCH.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private class	Blinker.SwitchTask A timer task class that writes a string to the serial line.

Nested classes/interfaces inherited from class util.PropertyResources

PropertyResources.Load, PropertyResources.URLResource

Field Summary

Fields

Modifier and Type	Field and Description
private TimerTask	blink The timer task ending the blinking phase.
private static long	DEFBLINKCLOSE The default duration of the blink phase on close.
private static long	DEFBLINKOPEN The default duration of the blink phase on open.
static String	DEFNAME The default name of this trigger.
private static long	DEFPHASEOFF The default duration of the off-phase.
private static long	DEFPHASEON The default duration of the on-phase.
static String	KEY_BLINKCLOSE The key for the duration of the entire blink phase on close, in ms.
static String	KEY_BLINKOPEN The key for the duration of the entire blink phase on open, in ms.
static String	KEY_PHASEOFF The key determining the duration of the off-phase, in ms.
static String	KEY_PHASEON The key determining the duration of the on-phase, in ms.
static String	KEY_SIGNALSWITCH The name of the light switch trigger.
private Switch	light The serial server for switching the light.
private TimerTask	off The timer task switching the light off.
private TimerTask	on The timer task switching the light on.
private Timer	timer The timer task scheduler used for blinking and stopping.

Fields inherited from class globals.trigger.SimpleTrigger

KEY_INITBOOLEAN

Fields inherited from class globals.parameter.AbstractParameter

KEY_FORMAT, KEY_NAME, KEY_PRESERVE, UNKNOWN

Fields inherited from class util.PropertyResources

KEY_NOINITONCREATE, POSTFIX_ALPHABET, POSTFIX_BYTES, POSTFIX_DIR, POSTFIX_EXT, POSTFIX_FILE, POSTFIX_LIST, POSTFIX_MODTIME, POSTFIX_URL

Fields inherited from class util.PropertyContainer

KEY_LISTSEPARATOR, KEY_MAPKEYVALUECHAR, KEY_MAPSEPARATOR

Fields inherited from interface util.PropertySupplying

CONFIG, KEY_CLASS

Fields inherited from interface util.ResourceSupplying

KEY_URLRESOURCES, KEY_URLUSECONFIG, KEY_URLUSECURRENT, KEY_URLUSEHOME

Constructor Summary

Constructors

Constructor and Description
Blinker(Map prop) Constructs a new blinker object.

Method Summary

Modifier and Type	Method and Description
void	blinkClose() Blinks before closing the roof.
void	blinkOpen() Blinks before opening the roof.
private void	doBlink(long onperiod, long offperiod, long duration) Performs the blinking, set the trigger to true on start and resets it after the blinking phase.
long	getCloseBlinkPeriod() Returns the entire time of the blinking period on close-roof actions.
long	getOpenBlinkPeriod() Returns the entire time of the blinking period on open-roof actions.
void	registerParameter(Parameter lux) Registers the paramters.
void	stopBlink() Quit blinking phase immediately.

Methods inherited from class globals.trigger.SimpleEventTrigger

getMonitor, registerMonitor, setTrigger, toggleTrigger

Methods inherited from class globals.trigger.SimpleTrigger

getLastToggleTime, getTrigger, init, rescanned

Methods inherited from class globals.trigger.AbstractTrigger

get, getElapsedToggleTime, isTrue, set

Methods inherited from class globals.parameter.AbstractParameter

createParameter, delivers, exit, getFormatted, getFormatted, getName, getPreserveFile, getString, getString, overrideDefaultName, register, setName, toString

Methods inherited from class util.PropertyResources

clone, createFrom, createFrom, createFrom, createInstance, getApplet, getAsResources, getLocate, getPropertiesToKey, getPropertiesToKey, getResource, getResourceAsStream, getResourceFromKey, getResources, hasLocalURLs, initProperties, keyCreate, keyCreate, reload, setApplet

Methods inherited from class util.PropertyContainer

augment, augment, augment, augment, augment, defaultBoolean, defaultChar, defaultDouble, defaultFloat, defaultInt, defaultLong, defaultObject, defaultObject, defaultProperties, defaultProperty, getAsBoolean, getAsChar, getAsDouble, getAsEnums, getAsFloat, getAsInt, getAsList, getAsLong, getAsMap, getAsMap, getAsObject, getAsObject, getProperties, getProperty, has, isNew, parseObject, parseObject, reload, removeProperty, requires, setObject, setProperties, setProperty, stringProperties

Methods inherited from class java.lang.Object

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

Methods inherited from interface util.Reloadable

reload

Methods inherited from interface globals.Parameter

getFormatted, getName, getString

Methods inherited from interface util.PropertySupplying

defaultBoolean, defaultChar, defaultDouble, defaultFloat, defaultInt, defaultLong, defaultObject, defaultObject, defaultProperties, defaultProperty, getAsBoolean, getAsChar, getAsDouble, getAsFloat, getAsInt, getAsList, getAsLong, getAsMap, getAsObject, getAsObject, getProperties, getProperty, has, parseObject, removeProperty, setObject, setProperty, stringProperties

Field Detail

KEY_PHASEON

public static final String KEY_PHASEON

The key determining the duration of the on-phase, in ms.

See Also:

Constant Field Values

KEY_PHASEOFF

public static final String KEY_PHASEOFF

The key determining the duration of the off-phase, in ms.

See Also:

Constant Field Values

KEY_BLINKOPEN

public static final String KEY_BLINKOPEN

The key for the duration of the entire blink phase on open, in ms.

See Also:

Constant Field Values

KEY_BLINKCLOSE

public static final String KEY_BLINKCLOSE

The key for the duration of the entire blink phase on close, in ms.

See Also:

Constant Field Values

KEY_SIGNALSWITCH

public static final String KEY_SIGNALSWITCH

The name of the light switch trigger.

See Also:

Constant Field Values

DEFNAME

public static final String DEFNAME

The default name of this trigger.

See Also:

Constant Field Values

DEFPHASEON

private static final long DEFPHASEON

The default duration of the on-phase.

See Also:

Constant Field Values

DEFPHASEOFF

private static final long DEFPHASEOFF

The default duration of the off-phase.

See Also:

Constant Field Values

DEFBLINKOPEN

private static final long DEFBLINKOPEN

The default duration of the blink phase on open.

See Also:

Constant Field Values

DEFBLINKCLOSE

private static final long DEFBLINKCLOSE

The default duration of the blink phase on close.

See Also:

Constant Field Values

light

private Switch light

The serial server for switching the light.

timer

private Timer timer

The timer task scheduler used for blinking and stopping.

on

private TimerTask on

The timer task switching the light on.

off

private TimerTask off

The timer task switching the light off.

blink

private TimerTask blink

The timer task ending the blinking phase.

Constructor Detail

Blinker

public Blinker(Map prop)

Constructs a new blinker object. After construction, the serial server has to be registered before the blinker is useable. Additionally, the main timer task scheduler is constructed as a demon timer.

Method Detail

registerParameter

public void registerParameter(Parameter lux)

Registers the paramters. Only if a trigger of instance RS485Switch and named after KEY_SIGNALSWITCH is found blinking will occur as planned.

Specified by:

registerParameter in interface ParameterDepending

getOpenBlinkPeriod

public long getOpenBlinkPeriod()

Returns the entire time of the blinking period on open-roof actions. Note that the elapsed time of the blinking phase can be queried with the generic trigger methods SimpleTrigger.getLastToggleTime() and AbstractTrigger.getElapsedToggleTime().

Returns:

The entire duration of the blinking phase in ms.

getCloseBlinkPeriod

public long getCloseBlinkPeriod()

Returns the entire time of the blinking period on close-roof actions. Note that the elapsed time of the blinking phase can be queried with the generic trigger methods SimpleTrigger.getLastToggleTime() and AbstractTrigger.getElapsedToggleTime().

Returns:

The entire duration of the blinking phase in ms.

blinkOpen

public void blinkOpen()

Blinks before opening the roof. The method is non-blocking. When the blinking period is over, a registered monitor is notified. Note that due to timing problems it may happen that a monitor is also notified at the beginning of the blinking phase.

blinkClose

public void blinkClose()

Blinks before closing the roof. The method is non-blocking. When the blinking period is over, a registered monitor is notified. Note that due to timing problems it may happen that a monitor is also notified at the beginning of the blinking phase.

stopBlink

public void stopBlink()

Quit blinking phase immediately. The timer tasks ruling the blinking and the canceling of the blink phase are all canceled premature.

doBlink

private void doBlink(long onperiod,
                     long offperiod,
                     long duration)

Performs the blinking, set the trigger to true on start and resets it after the blinking phase. If a monitor was registered it is probably invoked twice, at the start and at the end of the blinking phase.
The method takes three arguments, the length of the on-state, the length of the off-state and the entire duration of the blinking phase. The entire blinking is solved with three timer tasks, the first switching the light on periodically starts immediately at an on+off period, the second one switching off the light periodically at the same period, but delayed for the on-phase and the third timer task scheduled for a single execution after the entire blinking phase has ended.

Parameters:

onperiod - The duration of the on-phase, in ms.

offperiod - The duration of the off-phase, in ms.

duration - The entire duration of the blinking phase, in ms.