visad.formula
Class FormulaVar

java.lang.Object
  visad.ActionImpl
      visad.formula.FormulaVar

All Implemented Interfaces:

Action, EventListener, Runnable, ThingChangedListener

public class FormulaVar

extends ActionImpl

Represents a variable.

Field Summary

static RealType	CONSTANT constant tag
static boolean	DEBUG for testing purposes
(package private) String	name name of this variable
(package private) RemoteCellImpl	rtCell
(package private) CellImpl	textCell cell for recomputing formula from referenced Text object
(package private) ThingReference	textRef reference to a Text object equal to this variable's formula

Constructor Summary

(package private)	FormulaVar(String n, FormulaManager f) constructor without specified ThingReference
(package private)	FormulaVar(String n, FormulaManager f, ThingReference t) constructor with specified ThingReference

Method Summary

(package private) void	clearErrors() clear the list of errors that have occurred during formula evaluation
void	doAction() recompute this variable
(package private) String[]	getErrors() get an array of Strings representing any errors that have occurred during formula evaluation
(package private) String	getFormula() get the formula for this variable
(package private) ThingReference	getReference() get the ThingReference for this variable
(package private) Thing	getThing() get the Thing for this variable
(package private) boolean	isDependentOn(FormulaVar v) return whether this variable depends on v
(package private) boolean	othersDepend() return whether any other variables depend on this one
(package private) void	setFormula(String f) set the formula for this variable
(package private) void	setReference(ThingReference tr) set the ThingReference for this variable
(package private) void	setTextRef(ThingReference tr) set the formula to be dependent on a Text object referenced by tr
(package private) void	setThing(Thing t) set the Thing for this variable directly
(package private) void	waitForFormula() waits for this formula to recompute

Methods inherited from class visad.ActionImpl

addReference, checkTicks, disableAction, enableAction, findReference, getCurrentActionThread, getLinks, getName, removeAllReferences, removeReference, run, setEnabled, setName, setThreadPoolMaximum, stop, stopThreadPool, thingChanged, waitForTasks

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG

public static boolean DEBUG

for testing purposes

CONSTANT

public static RealType CONSTANT

constant tag

name

String name

name of this variable

textRef

ThingReference textRef

reference to a Text object equal to this variable's formula

textCell

CellImpl textCell

cell for recomputing formula from referenced Text object

rtCell

RemoteCellImpl rtCell

Constructor Detail

FormulaVar

FormulaVar(String n,
           FormulaManager f)
     throws VisADException

constructor without specified ThingReference

FormulaVar

FormulaVar(String n,
           FormulaManager f,
           ThingReference t)
     throws VisADException

constructor with specified ThingReference

Method Detail

othersDepend

boolean othersDepend()

return whether any other variables depend on this one

isDependentOn

boolean isDependentOn(FormulaVar v)

return whether this variable depends on v

setFormula

void setFormula(String f)
          throws FormulaException

set the formula for this variable

Throws:

FormulaException

waitForFormula

void waitForFormula()

waits for this formula to recompute

setTextRef

void setTextRef(ThingReference tr)
          throws VisADException,
                 RemoteException

set the formula to be dependent on a Text object referenced by tr

Throws:

VisADException

RemoteException

setThing

void setThing(Thing t)
        throws VisADException,
               RemoteException

set the Thing for this variable directly

Throws:

VisADException

RemoteException

setReference

void setReference(ThingReference tr)

set the ThingReference for this variable

getThing

Thing getThing()

get the Thing for this variable

getReference

ThingReference getReference()

get the ThingReference for this variable

getFormula

String getFormula()

get the formula for this variable

getErrors

String[] getErrors()

get an array of Strings representing any errors that have occurred during formula evaluation

clearErrors

void clearErrors()

clear the list of errors that have occurred during formula evaluation

doAction

public void doAction()

recompute this variable

Specified by:

doAction in class ActionImpl