: Class InputField

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Class InputField

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--java.awt.Panel
                    |
                    +--InputField

public class InputField
extends java.awt.Panel
implements java.awt.event.ActionListener, java.util.Observer

A suped up text field, containing a label, a text box increment and decrement buttons, and a unit label. Includes a UnitConverter, and handles conversions to/from metric automatically.

See Also:: Serialized Form

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT,  
CENTER_ALIGNMENT,  
LEFT_ALIGNMENT,  
RIGHT_ALIGNMENT,  
TOP_ALIGNMENT

Constructor Summary
`InputField(int unitType, double initialValue, double increment)` Create an InputField.

Method Summary
`void`	`actionPerformed(java.awt.event.ActionEvent e)` Here is where we come when the enter key is pressed in the text field.
`void`	`addActionListener(java.awt.event.ActionListener parent)`
`double`	`getValue()`
`void`	`setLabelText(java.lang.String text)`
`void`	`setNameText(java.lang.String text)`
`void`	`update(java.util.Observable obs, java.lang.Object arg)` Called as a result of the unit system being changed.

Methods inherited from class java.awt.Panel

addNotify

Methods inherited from class java.awt.Container

add, 
add, 
add, 
add, 
add, 
addContainerListener, 
addImpl, 
countComponents, 
deliverEvent, 
doLayout, 
findComponentAt, 
findComponentAt, 
getAlignmentX, 
getAlignmentY, 
getComponent, 
getComponentAt, 
getComponentAt, 
getComponentCount, 
getComponents, 
getInsets, 
getLayout, 
getMaximumSize, 
getMinimumSize, 
getPreferredSize, 
insets, 
invalidate, 
isAncestorOf, 
layout, 
list, 
list, 
locate, 
minimumSize, 
paint, 
paintComponents, 
paramString, 
preferredSize, 
print, 
printComponents, 
processContainerEvent, 
processEvent, 
remove, 
remove, 
removeAll, 
removeContainerListener, 
removeNotify, 
setFont, 
setLayout, 
update, 
validate, 
validateTree

Methods inherited from class java.awt.Component

action, 
add, 
addComponentListener, 
addFocusListener, 
addInputMethodListener, 
addKeyListener, 
addMouseListener, 
addMouseMotionListener, 
addPropertyChangeListener, 
addPropertyChangeListener, 
bounds, 
checkImage, 
checkImage, 
coalesceEvents, 
contains, 
contains, 
createImage, 
createImage, 
disable, 
disableEvents, 
dispatchEvent, 
enable, 
enable, 
enableEvents, 
enableInputMethods, 
firePropertyChange, 
getBackground, 
getBounds, 
getBounds, 
getColorModel, 
getComponentOrientation, 
getCursor, 
getDropTarget, 
getFont, 
getFontMetrics, 
getForeground, 
getGraphics, 
getHeight, 
getInputContext, 
getInputMethodRequests, 
getLocale, 
getLocation, 
getLocation, 
getLocationOnScreen, 
getName, 
getParent, 
getPeer, 
getSize, 
getSize, 
getToolkit, 
getTreeLock, 
getWidth, 
getX, 
getY, 
gotFocus, 
handleEvent, 
hasFocus, 
hide, 
imageUpdate, 
inside, 
isDisplayable, 
isDoubleBuffered, 
isEnabled, 
isFocusTraversable, 
isLightweight, 
isOpaque, 
isShowing, 
isValid, 
isVisible, 
keyDown, 
keyUp, 
list, 
list, 
list, 
location, 
lostFocus, 
mouseDown, 
mouseDrag, 
mouseEnter, 
mouseExit, 
mouseMove, 
mouseUp, 
move, 
nextFocus, 
paintAll, 
postEvent, 
prepareImage, 
prepareImage, 
printAll, 
processComponentEvent, 
processFocusEvent, 
processInputMethodEvent, 
processKeyEvent, 
processMouseEvent, 
processMouseMotionEvent, 
remove, 
removeComponentListener, 
removeFocusListener, 
removeInputMethodListener, 
removeKeyListener, 
removeMouseListener, 
removeMouseMotionListener, 
removePropertyChangeListener, 
removePropertyChangeListener, 
repaint, 
repaint, 
repaint, 
repaint, 
requestFocus, 
reshape, 
resize, 
resize, 
setBackground, 
setBounds, 
setBounds, 
setComponentOrientation, 
setCursor, 
setDropTarget, 
setEnabled, 
setForeground, 
setLocale, 
setLocation, 
setLocation, 
setName, 
setSize, 
setSize, 
setVisible, 
show, 
show, 
size, 
toString, 
transferFocus

Methods inherited from class java.lang.Object

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

Constructor Detail

InputField

public InputField(int unitType,
                  double initialValue,
                  double increment)

Create an InputField. Arguments are

unitType - the type of unit being specified in the input, as defined in class UnitConverter.
increment - the amount that the field will be incremented or decremented when these respective buttons are clicked.

Method Detail

setNameText

public void setNameText(java.lang.String text)

setLabelText

public void setLabelText(java.lang.String text)

getValue

public double getValue()

update

public void update(java.util.Observable obs,
                   java.lang.Object arg)

Called as a result of the unit system being changed. This object is added as an Observer of the UnitConverter object contained herein. It will call this update() method when the unit system changes.

Specified by:: update in interface java.util.Observer

addActionListener

public void addActionListener(java.awt.event.ActionListener parent)

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent e)

Here is where we come when the enter key is pressed in the text field.

Specified by:: actionPerformed in interface java.awt.event.ActionListener