org.adougou.cline
Class TextArea

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.TextComponent
              |
              +--java.awt.TextArea
                    |
                    +--org.adougou.cline.TextArea

All Implemented Interfaces:

javax.accessibility.Accessible, java.util.EventListener, java.awt.image.ImageObserver, java.awt.event.KeyListener, java.awt.MenuContainer, java.io.Serializable

public class TextArea

extends java.awt.TextArea

implements java.awt.event.KeyListener

This is a special TextArea for use with the TextAreaPrompt. It has the basic functionality of the java.awt.TextArea, however it has a KeyListener that controls how the user moves about.

See Also:

TextArea, TextAreaPrompt, Serialized Form

Inner classes inherited from class java.awt.TextArea

java.awt.TextArea.AccessibleAWTTextArea

Inner classes inherited from class java.awt.TextComponent

java.awt.TextComponent.AccessibleAWTTextComponent

Inner classes inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent

Fields inherited from class java.awt.TextArea

SCROLLBARS_BOTH, SCROLLBARS_HORIZONTAL_ONLY, SCROLLBARS_NONE, SCROLLBARS_VERTICAL_ONLY

Fields inherited from class java.awt.TextComponent

textListener

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

TextArea(int numRows)
Construct a new TextArea for use with the TextAreaPrompt.

TextArea(int numRows, int numColumns)
Construct a new TextArea for use with the TextAreaPrompt.

Method Summary

java.awt.Dimension	getPreferredSize() The java.awt.TextArea.getPreferredSize() method seems to insist on making the TextArea slight larger than is required to fit the specified number of rows.
void	keyPressed(java.awt.event.KeyEvent e) Notes from the KeyEvent API documentation: keyTyped events are higher level and do not usually depend on the platform or keyboard layout.
void	keyReleased(java.awt.event.KeyEvent e)
void	keyTyped(java.awt.event.KeyEvent e)

Methods inherited from class java.awt.TextArea

addNotify, append, appendText, getAccessibleContext, getColumns, getMinimumSize, getMinimumSize, getPreferredSize, getRows, getScrollbarVisibility, insert, insertText, minimumSize, minimumSize, paramString, preferredSize, preferredSize, replaceRange, replaceText, setColumns, setRows

Methods inherited from class java.awt.TextComponent

addTextListener, enableInputMethods, getBackground, getCaretPosition, getListeners, getSelectedText, getSelectionEnd, getSelectionStart, getText, isEditable, processEvent, processTextEvent, removeNotify, removeTextListener, select, selectAll, setBackground, setCaretPosition, setEditable, setSelectionEnd, setSelectionStart, setText

Methods inherited from class java.awt.Component

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

Methods inherited from class java.lang.Object

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

Constructor Detail

TextArea

public TextArea(int numRows)

Construct a new TextArea for use with the TextAreaPrompt. Uses the default number of columns (TextArea.DEFAULT_COLUMNS).

Parameters:

numRows - the number of lines that will fit into the text area.

TextArea

public TextArea(int numRows,
                int numColumns)

Construct a new TextArea for use with the TextAreaPrompt.

Parameters:

numRows - the number of lines that will fit into the text area.

numColumns - the number of characters that will fit into the text area.

Method Detail

getPreferredSize

public java.awt.Dimension getPreferredSize()

The java.awt.TextArea.getPreferredSize() method seems to insist on making the TextArea slight larger than is required to fit the specified number of rows. My solution is to overload the getPreferredSize() method and slightly reduce the dimension height.

Overrides:

getPreferredSize in class java.awt.TextArea

keyPressed

public void keyPressed(java.awt.event.KeyEvent e)

Notes from the KeyEvent API documentation: keyTyped events are higher level and do not usually depend on the platform or keyboard layout. KeyPressed and KeyReleased events are lower-level are platform dependent. All key-processing for the TextArea makes use of keyPressed events since we want to capture special KeyEvents such as HOME, ENTER, arrow keys etc..

Specified by:

keyPressed in interface java.awt.event.KeyListener

keyTyped

public void keyTyped(java.awt.event.KeyEvent e)

Specified by:

keyTyped in interface java.awt.event.KeyListener

keyReleased

public void keyReleased(java.awt.event.KeyEvent e)

Specified by:

keyReleased in interface java.awt.event.KeyListener