bsh.util
Class AWTConsole

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.TextComponent
              |
              +--java.awt.TextArea
                    |
                    +--bsh.util.AWTConsole

All Implemented Interfaces:

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

public class AWTConsole

extends java.awt.TextArea

implements ConsoleInterface, java.lang.Runnable, java.awt.event.KeyListener

An old AWT based console for BeanShell. I looked everwhere for one, and couldn't find anything that worked. I've tried to keep this as small as possible, no frills. (Well, one frill - a simple history with the up/down arrows) My hope is that this can be moved to a lightweight (portable) component with JFC soon... but Swing is still very slow and buggy. Done: see JConsole.java The big Hack: The heinous, disguisting hack in here is to keep the caret (cursor) at the bottom of the text (without the user having to constantly click at the bottom). It wouldn't be so bad if the damned setCaretPostition() worked as expected. But the AWT TextArea for some insane reason treats NLs as characters... oh, and it refuses to let you set a caret position greater than the text length - for which it counts NLs as *one* character. The glorious hack to fix this is to go the TextComponent peer. I really hate this. Out of date: This class is out of date. It does not use the special blocking piped input stream that the jconsole uses. Deprecation: This file uses two deprecate APIs. We want to be a PrintStream so that we can redirect stdout to our console... I don't see a way around this. Also we have to use getPeer() for the big hack above.

See Also:

Serialized Form

Field Summary

private int	histLine
private java.util.Vector	history
private java.io.InputStream	in
private java.io.InputStream	inPipe
private java.lang.StringBuffer	line
private java.io.PrintStream	out
private java.io.OutputStream	outPipe
private java.lang.String	startedLine
private int	textLength

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

AWTConsole()

AWTConsole(java.io.InputStream in, java.io.OutputStream out)

AWTConsole(int rows, int cols, java.io.InputStream cin, java.io.OutputStream cout)

Method Summary

private void	acceptLine(java.lang.String line)
private int	countNLs()
private void	doChar(char ch)
private void	enter()
void	error(java.lang.String s)
java.io.PrintStream	getErr()
java.io.Reader	getIn()
java.io.PrintStream	getOut()
private void	historyDown()
private void	historyUp()
private void	inPipeWatcher()
void	keyPressed(java.awt.event.KeyEvent e)
void	keyReleased(java.awt.event.KeyEvent e)
void	keyTyped(java.awt.event.KeyEvent e)
static void	main(java.lang.String[] args)
void	print(java.lang.String s)
void	print(java.lang.String s, java.awt.Color c)
void	println(java.lang.String s)
void	run()
void	setCaretPosition(int pos)
private void	showHistoryLine()
java.lang.String	toString()
void	type(int code, char ch, int modifiers)

Methods inherited from class java.awt.TextArea

addNotify, append, appendText, getAccessibleContext, getColumns, getMinimumSize, getMinimumSize, getPreferredSize, 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, getTextListeners, isEditable, processEvent, processTextEvent, removeNotify, removeTextListener, select, selectAll, setBackground, setEditable, setSelectionEnd, setSelectionStart, setText

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, deliverEvent, disable, disableEvents, dispatchEvent, doLayout, enable, enable, enableEvents, firePropertyChange, firePropertyChange, firePropertyChange, getAlignmentX, getAlignmentY, getBounds, getBounds, getColorModel, getComponentAt, getComponentAt, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeys, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocation, getLocationOnScreen, getMaximumSize, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, invalidate, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusCycleRoot, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, 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, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeys, setFocusTraversalKeysEnabled, setFont, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, setVisible, show, show, size, transferFocus, transferFocusBackward, transferFocusUpCycle, update, validate

Methods inherited from class java.lang.Object

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

Field Detail

outPipe

private java.io.OutputStream outPipe

inPipe

private java.io.InputStream inPipe

in

private java.io.InputStream in

out

private java.io.PrintStream out

line

private java.lang.StringBuffer line

startedLine

private java.lang.String startedLine

textLength

private int textLength

history

private java.util.Vector history

histLine

private int histLine

Constructor Detail

AWTConsole

public AWTConsole(int rows,
                  int cols,
                  java.io.InputStream cin,
                  java.io.OutputStream cout)

AWTConsole

public AWTConsole()

AWTConsole

public AWTConsole(java.io.InputStream in,
                  java.io.OutputStream out)

Method Detail

getIn

public java.io.Reader getIn()

Specified by:

getIn in interface ConsoleInterface

getOut

public java.io.PrintStream getOut()

Specified by:

getOut in interface ConsoleInterface

getErr

public java.io.PrintStream getErr()

Specified by:

getErr in interface ConsoleInterface

keyPressed

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

Specified by:

keyPressed in interface java.awt.event.KeyListener

type

public void type(int code,
                 char ch,
                 int modifiers)

doChar

private void doChar(char ch)

enter

private void enter()

setCaretPosition

public void setCaretPosition(int pos)

Overrides:

setCaretPosition in class java.awt.TextComponent

countNLs

private int countNLs()

historyUp

private void historyUp()

historyDown

private void historyDown()

showHistoryLine

private void showHistoryLine()

acceptLine

private void acceptLine(java.lang.String line)

println

public void println(java.lang.String s)

Specified by:

println in interface ConsoleInterface

error

public void error(java.lang.String s)

Specified by:

error in interface ConsoleInterface

print

public void print(java.lang.String s,
                  java.awt.Color c)

print

public void print(java.lang.String s)

Specified by:

print in interface ConsoleInterface

inPipeWatcher

private void inPipeWatcher()
                    throws java.io.IOException

java.io.IOException

run

public void run()

Specified by:

run in interface java.lang.Runnable

main

public static void main(java.lang.String[] args)

toString

public java.lang.String toString()

Overrides:

toString in class java.awt.Component

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