Class ui.KeyPad 
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Class ui.KeyPad 

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Container
                   |
                   +----java.awt.Panel
                           |
                           +----ui.KeyPad
public class KeyPad
extends Panel
A calculator key pad.

Variable Index

o MODE_CALC
Numerical Calculation mode.
o MODE_EXPR
Expression evaluation mode.
o MODE_GRAPH
Graph plotting mode.
o mode
Current mode of the key pad.

Constructor Index

o KeyPad()
Construct a key pad.

Method Index

o action(Event, Object)
Called when a key is pressed.
o getKey(String)
Get a key from a string.
o reset()
Reset the keypad to empty input mode.
o setCurrentMode(int)
Setup current mode.
o setDisplay(Display)
Set calculator display.
o setEchoArea(TextField)
Set current key string echo label.

Variables

o MODE_CALC 
  public final static int MODE_CALC
Numerical Calculation mode.
o MODE_EXPR 
  public final static int MODE_EXPR
Expression evaluation mode.
o MODE_GRAPH 
  public final static int MODE_GRAPH
Graph plotting mode.
o mode 
  public int mode
Current mode of the key pad.

Constructors

o KeyPad 
  public KeyPad()
Construct a key pad.

Methods

o setEchoArea 
  public void setEchoArea(TextField echo)
Set current key string echo label.
o setDisplay 
  public void setDisplay(Display d)
Set calculator display.
o getKey 
  public Key getKey(String str)
Get a key from a string.
o reset 
  public void reset()
Reset the keypad to empty input mode.
o setCurrentMode 
  public void setCurrentMode(int m)
Setup current mode. This involves setup correct sensitivity for all keys on the pad.
o action 
  public boolean action(Event evt,
                        Object arg)
Called when a key is pressed.
Overrides:
action in class Component 
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