slogo.turtle

Class BackgroundContext

java.lang.Object

slogo.turtle.BackgroundContext

All Implemented Interfaces:

Context

public class BackgroundContext
extends java.lang.Object
implements Context

Field Summary

Fields

Modifier and Type	Field and Description
(package private) TurtleField.DrawingPanel	background

Constructor Summary

Constructors

Constructor and Description
BackgroundContext(TurtleField.DrawingPanel background) creates a background context

Method Summary

Modifier and Type	Method and Description
java.lang.Object	value(java.lang.String name) If there are local/global variables, a variable might have a different value depending on the Context, so Contexts should support determining the value of an identifier.

Methods inherited from class java.lang.Object

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

Field Detail

background

TurtleField.DrawingPanel background

Constructor Detail

BackgroundContext

public BackgroundContext(TurtleField.DrawingPanel background)

creates a background context

Method Detail

value

public java.lang.Object value(java.lang.String name)

Description copied from interface: Context

If there are local/global variables, a variable might have a different value depending on the Context, so Contexts should support determining the value of an identifier.

Specified by:

value in interface Context

Parameters:

name - identifier being evaluated in this Context

Returns:

the object mapped to by the identifier in this Context