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Class distans.ThreeCrossPanels 

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Container
                   |
                   +----java.awt.Panel
                           |
                           +----distans.ThreeCrossPanels
public class ThreeCrossPanels
extends Panel
implements ShowPanelInterface
This class displays QuestionPages of type Cross. Because all subquestions can't be showned at the same screen a card system is used for displaying four at a time. This class also take care of taking the information from the text fields and putting it into the data structures. The name Three should be changed to X

Variable Index

o ad
A refernece to a student answer object, this is only used by the ReadAnswer Applet
o cardNo
The number of the current card beeing displayed, 0-
o cp
An array with the CrossPanels.
o crossPanel1
The first of the CrossPanels, the panels have individual references beacuse they were created by VisualCafe
o crossPanel2
o crossPanel3
o crossPanel4
o noOfPanels
The number of CrossPanels on each card, even though the name of this class says two more than two could be possible.
o pd
A reference to the page currently beeing displayed, the PageData must be of type CROSS

Constructor Index

o ThreeCrossPanels()
Constructor, creates the four CrossPanels.

Method Index

o addNotify()
Adds all the graphical components
o getPreferredSize()
o initRead()
Sets the CrossPanels to not editabel, used when working with ReadAnswerApplet
o putPage(PageData)
Call this method to display the first card of a new page.
o putPage(PageData, AnswerData)
o saveCurrentCard()
Saves the information of the current card in PageData
o saveCurrentCardRead()
Saves the grade given by the teatcher in the AnswerData object.
o show()
Not used just calls the super class (Panel)
o showCurrentCard()
Shows the current card by changing the text in the two AltPanels.
o showNextCard()
Saves the information of the old card in the data structures and displays the next card.
o showPrevCard()
Saves the information of the old card in the data structures and displays the previous card.
o validateAndHide()
Calls validateCard and hides the Panel
o validateCard()
Saves the current card by calling saveCurrentCard()

Variables

o crossPanel1 
 CrossPanel crossPanel1
The first of the CrossPanels, the panels have individual references beacuse they were created by VisualCafe

o crossPanel2 
 CrossPanel crossPanel2
o crossPanel3 
 CrossPanel crossPanel3
o crossPanel4 
 CrossPanel crossPanel4
o pd 
 private PageData pd
A reference to the page currently beeing displayed, the PageData must be of type CROSS

o ad 
 private AnswerData ad
A refernece to a student answer object, this is only used by the ReadAnswer Applet

o cardNo 
 private int cardNo
The number of the current card beeing displayed, 0-

o cp 
 private CrossPanel cp[]
An array with the CrossPanels.

o noOfPanels 
 static final int noOfPanels
The number of CrossPanels on each card, even though the name of this class says two more than two could be possible.

Constructors

o ThreeCrossPanels 
 public ThreeCrossPanels()
Constructor, creates the four CrossPanels.

Methods

o initRead 
 public void initRead()
Sets the CrossPanels to not editabel, used when working with ReadAnswerApplet

o show 
 public void show()
Not used just calls the super class (Panel)

Overrides:
show in class Component
o validateAndHide 
 public void validateAndHide()
Calls validateCard and hides the Panel

See Also:
validateCard
o putPage 
 public void putPage(PageData pd)
Call this method to display the first card of a new page. The old page current card is saved with a call to vaildateCard.

o putPage 
 public void putPage(PageData pd,
                     AnswerData ad)
o validateCard 
 public void validateCard()
Saves the current card by calling saveCurrentCard()

o showCurrentCard 
 private void showCurrentCard()
Shows the current card by changing the text in the two AltPanels. The text displayed depends if it should display text for editing/creating pages or the students answers.

o showNextCard 
 public void showNextCard()
Saves the information of the old card in the data structures and displays the next card.

o saveCurrentCard 
 private boolean saveCurrentCard()
Saves the information of the current card in PageData

Returns:
false if not all the text fields in the two AltPanels are filled, true otherwise
o saveCurrentCardRead 
 private boolean saveCurrentCardRead()
Saves the grade given by the teatcher in the AnswerData object.

o showPrevCard 
 public void showPrevCard()
Saves the information of the old card in the data structures and displays the previous card.

o getPreferredSize 
 public Dimension getPreferredSize()
Overrides:
getPreferredSize in class Container
o addNotify 
 public void addNotify()
Adds all the graphical components

Overrides:
addNotify in class Panel 
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