org.concord.pedagogica.engine
Class ActivityNode

java.lang.Object
  |
  +--org.concord.pedagogica.engine.ActivityScript
        |
        +--org.concord.pedagogica.engine.ActivityNode

All Implemented Interfaces:

java.lang.Runnable, ScriptError

Direct Known Subclasses:

Activity

public class ActivityNode

extends ActivityScript

The ActivityNode is the state object of the state machine controlled by the Activity object. Each Activity node has its own script that implements an "enter" method and an "exit" method. Each Activity node also has a list of variables that contain the stae of the node. It is these variables that are operated on by both the node script and the arc scripts.

Field Summary

protected int	enterCount
protected java.util.Vector	inArcs
protected java.lang.Thread	initializer
protected java.lang.String	nodeName
protected ScriptThread	nodeThread
protected java.util.Vector	outArcs
protected java.util.Vector	questions
protected java.util.Stack	returnNode

Fields inherited from class org.concord.pedagogica.engine.ActivityScript

errorHandler, ext, lastError, name, nodeAccess, parent, root, runtime, script, scriptFile, scriptText, scriptThread, scriptType, state, synchronizer, textSelection, tryName, viewText

Constructor Summary

ActivityNode()

ActivityNode(Activity parent)

Method Summary

void	addQuestion(QuestionForm question)
boolean	back()
void	delete()
void	done()
void	enter()
void	exit()
int	getEnterCount()
java.lang.Object	getViewObject(java.lang.String objectName)
boolean	isActivity()
boolean	next()
ActivityNode	popReturnNode()
void	pushReturnNode(ActivityNode node)
void	removeQuestion(QuestionForm question)
void	setEnterCount(int count)
void	setStartNode()
boolean	test()

Methods inherited from class org.concord.pedagogica.engine.ActivityScript

addStateVariable, clearLastError, getLastError, getLevel, getLogging, getName, getNodeAccess, getParent, getPath, getRoot, getScript, getScriptType, getState, getText, getTextSelection, getViewText, initialize, load, load, parseError, readText, removeStateVariable, run, runError, setErrorHandler, setLastError, setName, setNodeAccess, setScriptType, setText, setText, setViewText, showError, startEventProcessing, stopEventProcessing, writeText

Methods inherited from class java.lang.Object

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

Field Detail

inArcs

protected java.util.Vector inArcs

outArcs

protected java.util.Vector outArcs

nodeName

protected java.lang.String nodeName

nodeThread

protected ScriptThread nodeThread

returnNode

protected java.util.Stack returnNode

initializer

protected java.lang.Thread initializer

enterCount

protected int enterCount

questions

protected java.util.Vector questions

Constructor Detail

ActivityNode

public ActivityNode()

ActivityNode

public ActivityNode(Activity parent)

Method Detail

delete

public void delete()

Overrides:

delete in class ActivityScript

isActivity

public boolean isActivity()

setStartNode

public void setStartNode()

pushReturnNode

public void pushReturnNode(ActivityNode node)

popReturnNode

public ActivityNode popReturnNode()

addQuestion

public void addQuestion(QuestionForm question)

removeQuestion

public void removeQuestion(QuestionForm question)

getViewObject

public java.lang.Object getViewObject(java.lang.String objectName)

getEnterCount

public int getEnterCount()

setEnterCount

public void setEnterCount(int count)

test

public boolean test()

next

public boolean next()

back

public boolean back()

enter

public void enter()

exit

public void exit()

done

public void done()