Visual
Class Histogram

java.lang.Object
  Visual.Histogram

abstract class Histogram
extends java.lang.Object

Field Summary

(package private) Curve	curve The Curve used for the current GradeBook.
(package private) java.util.Collection<Grade>	grades Collection of grades that make up the Histogram.
(package private) boolean	isSpecific Boolean value whether or not speicific Histogram is displayer (ie.
(package private) java.util.Collection<HistoSegment>	segments The HistoSegments that make up the histogram.

Constructor Summary

Histogram()

Method Summary

(package private) abstract void	createHistogram() createHistogram creates the Histogram with the proper cutoff and the proper values for each bar in the histogram.
(package private) abstract void	moveCutoff(HistoSegment seg, int newVal) moveCutoff moves a cutoff when the user drags the bar representing the cutoff.

Methods inherited from class java.lang.Object

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

Field Detail

isSpecific

boolean isSpecific

Boolean value whether or not speicific Histogram is displayer (ie. whether or not all grades are shown or just one (A, A-, A+)).

curve

Curve curve

The Curve used for the current GradeBook.

segments

java.util.Collection<HistoSegment> segments

The HistoSegments that make up the histogram.

grades

java.util.Collection<Grade> grades

Collection of grades that make up the Histogram.

Constructor Detail

Histogram

Histogram()

Method Detail

createHistogram

abstract void createHistogram()

createHistogram creates the Histogram with the proper cutoff and the proper values for each bar in the histogram. /* ensures // // Column height equals number of grades in the range // (\forall HistoSegment seg : segments; (\forall HistoRow row : seg.rows; row.num == \sum( 1 ; grades.grade <= row.maxVal && grades.grade > row.minVal ) ); );

moveCutoff

abstract void moveCutoff(HistoSegment seg,
                         int newVal)

moveCutoff moves a cutoff when the user drags the bar representing the cutoff. /* ensures // // Cutoff is moved to it's proper value // (seg.cutoff == newVal) && // // Any cutoffs smaller than the current cutoff stay smaller than it // (\forall HistoSegment otherSeg ; otherSeg.cutoff < \old(seg.cutoff) ; otherSeg.cutoff <= seg.cutoff ) && // // Any cutoffs larger than the current cutoff stay larger than it // (\forall HistoSegment otherSeg ; otherSeg.cutoff > \old(seg.cutoff) ; (otherSeg.cutoff >= seg.cutoff) );