Package com.ibm.icu.dev.demo.impl

Class DumbTextComponent

java.lang.Object

java.awt.Component

java.awt.Canvas

com.ibm.icu.dev.demo.impl.DumbTextComponent

All Implemented Interfaces:

FocusListener, KeyListener, MouseListener, MouseMotionListener, ImageObserver, MenuContainer, Serializable, EventListener, Accessible

Direct Known Subclasses:

TransliteratingTextComponent

public class DumbTextComponent
extends Canvas
implements KeyListener, MouseListener, MouseMotionListener, FocusListener

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.awt.Canvas

Canvas.AccessibleAWTCanvas

Nested classes/interfaces inherited from class java.awt.Component

Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy

Field Summary

Fields

Modifier and Type	Field	Description
private Point	activePoint
private int	activeStart
private Image	cacheImage
private Point	caretPoint
private BreakIterator	charBreaker
private String	contents
private static final char	CR
private static boolean	DEBUG
private boolean	doubleClick
private boolean	editable
private Point	endPoint
private FontMetrics	fm
private boolean	focus
private int	lastHeight
private int	lastWidth
private int	lineAscent
private BreakIterator	lineBreaker
private int	lineCount
private int	lineHeight
private int	lineLeading
private int[]	lineStarts
private static final int	MAX_LINES
private Dimension	mySize
private boolean	pressed
private boolean	redoLines
private Selection	selection
private ActionListener	selectionListener
private static final long	serialVersionUID	For serialization
private Point	startPoint
private Selection	tempSelection
private TextListener	textListener
private boolean	valid
private BreakIterator	wordBreaker
private int	xInset
private int	yInset

Fields inherited from class java.awt.Component

accessibleContext, 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

Constructors

Constructor	Description
DumbTextComponent()

Method Summary

Modifier and Type	Method	Description
void	addActionListener(ActionListener l)
void	addTextListener(TextListener l)
(package private) void	copy()
void	drawSelection(Graphics g, String lastSubstring)
private int	findFittingBreak(FontMetrics fMtr, String line, int width, BreakIterator breaker)	LIU: Finds the longest substring that fits a given width composed of subunits returned by a BreakIterator.
private int	findLine(int off, boolean start)
private void	fixHex()
private void	fixLineStarts(int width)
void	focusGained(FocusEvent e)
void	focusLost(FocusEvent e)
protected int	getKeyStart()
Dimension	getMaximumSize()
Dimension	getMinimumSize()
Dimension	getPreferredSize()
int	getSelectionEnd()
int	getSelectionStart()
String	getText()
protected void	handleKeyTyped(KeyEvent e)
static String	hex(char ch)
void	insertText(String text)
boolean	isEditable()
void	keyPressed(KeyEvent e)
void	keyReleased(KeyEvent e)
void	keyTyped(KeyEvent e)
private int	lineDelta(int off, int delta)	LIU: Given an offset into contents, moves up or down by lines, according to lineStarts[].
void	mouseClicked(MouseEvent e)
void	mouseDragged(MouseEvent e)
void	mouseEntered(MouseEvent e)
void	mouseExited(MouseEvent e)
void	mouseMoved(MouseEvent e)
void	mousePressed(MouseEvent e)
void	mouseReleased(MouseEvent e)
int	nextLine(FontMetrics fMtr, int start, int width)
Point	offset2Point(int off, boolean start, Point p)
void	paint(Graphics g)
void	paint2(Graphics g)
(package private) void	paintRect(Graphics g, int x, int y, int w, int h)
(package private) void	paste()
Selection	point2Offset(Point p, Selection o)
void	removeActionListener(ActionListener l)
void	removeTextListener(TextListener l)
void	replaceRange(String s, int start, int end)
void	select(int start, int end)
void	select(int start, int end, boolean clickAfter)
void	select(Selection newSelection)
void	select(MouseEvent e, boolean first)
void	setBounds(int x, int y, int w, int h)
void	setEditable(boolean b)
void	setFont(Font font)
protected void	setKeyStart(int keyStart)
void	setText(String text)
void	setText2(String text)
void	update(Graphics g)
protected void	validateKeyStart()
int	visibleWidth(FontMetrics fMtr, String s)

Methods inherited from class java.awt.Canvas

addNotify, createBufferStrategy, createBufferStrategy, getAccessibleContext, getBufferStrategy

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, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getAlignmentX, getAlignmentY, getBackground, getBaseline, getBaselineResizeBehavior, 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, getListeners, getLocale, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, 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, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, layout, list, list, list, list, list, locate, location, lostFocus, minimumSize, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, paramString, postEvent, preferredSize, prepareImage, prepareImage, print, printAll, processComponentEvent, processEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, revalidate, setBackground, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeys, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setMinimumSize, setMixingCutoutShape, setName, setPreferredSize, setSize, setSize, setVisible, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle, validate

Methods inherited from class java.lang.Object

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

Field Details

serialVersionUID

private static final long serialVersionUID

For serialization

See Also:

• Constant Field Values

DEBUG

private static transient boolean DEBUG

contents

private String contents

selection

private Selection selection

activeStart

private int activeStart

editable

private boolean editable

tempSelection

private transient Selection tempSelection

focus

private transient boolean focus

lineBreaker

private transient BreakIterator lineBreaker

wordBreaker

private transient BreakIterator wordBreaker

charBreaker

private transient BreakIterator charBreaker

lineAscent

private transient int lineAscent

lineHeight

private transient int lineHeight

lineLeading

private transient int lineLeading

lastHeight

private transient int lastHeight

lastWidth

private transient int lastWidth

MAX_LINES

private static final int MAX_LINES

See Also:

• Constant Field Values

lineStarts

private transient int[] lineStarts

lineCount

private transient int lineCount

valid

private transient boolean valid

fm

private transient FontMetrics fm

redoLines

private transient boolean redoLines

doubleClick

private transient boolean doubleClick

textListener

private transient TextListener textListener

selectionListener

private transient ActionListener selectionListener

cacheImage

private transient Image cacheImage

mySize

private transient Dimension mySize

xInset

private transient int xInset

yInset

private transient int yInset

startPoint

private transient Point startPoint

endPoint

private transient Point endPoint

caretPoint

private transient Point caretPoint

activePoint

private transient Point activePoint

CR

private static final char CR

See Also:

• Constant Field Values

pressed

private transient boolean pressed

Constructor Details

DumbTextComponent

public DumbTextComponent()

Method Details

addActionListener

public void addActionListener(ActionListener l)

removeActionListener

public void removeActionListener(ActionListener l)

addTextListener

public void addTextListener(TextListener l)

removeTextListener

public void removeTextListener(TextListener l)

mousePressed

public void mousePressed(MouseEvent e)

Specified by:

mousePressed in interface MouseListener

mouseDragged

public void mouseDragged(MouseEvent e)

Specified by:

mouseDragged in interface MouseMotionListener

mouseReleased

public void mouseReleased(MouseEvent e)

Specified by:

mouseReleased in interface MouseListener

mouseEntered

public void mouseEntered(MouseEvent e)

Specified by:

mouseEntered in interface MouseListener

mouseExited

public void mouseExited(MouseEvent e)

Specified by:

mouseExited in interface MouseListener

mouseClicked

public void mouseClicked(MouseEvent e)

Specified by:

mouseClicked in interface MouseListener

mouseMoved

public void mouseMoved(MouseEvent e)

Specified by:

mouseMoved in interface MouseMotionListener

focusGained

public void focusGained(FocusEvent e)

Specified by:

focusGained in interface FocusListener

focusLost

public void focusLost(FocusEvent e)

Specified by:

focusLost in interface FocusListener

select

public void select(MouseEvent e,
 boolean first)

keyPressed

public void keyPressed(KeyEvent e)

Specified by:

keyPressed in interface KeyListener

copy

void copy()

paste

void paste()

lineDelta

private int lineDelta(int off,
 int delta)

LIU: Given an offset into contents, moves up or down by lines, according to lineStarts[].

Parameters:

off - the offset into contents

delta - how many lines to move up (invalid input: '<' 0) or down (> 0)

Returns:

the new offset into contents

keyReleased

public void keyReleased(KeyEvent e)

Specified by:

keyReleased in interface KeyListener

keyTyped

public void keyTyped(KeyEvent e)

Specified by:

keyTyped in interface KeyListener

handleKeyTyped

protected void handleKeyTyped(KeyEvent e)

setKeyStart

protected void setKeyStart(int keyStart)

validateKeyStart

protected void validateKeyStart()

getKeyStart

protected int getKeyStart()

setEditable

public void setEditable(boolean b)

isEditable

public boolean isEditable()

select

public void select(Selection newSelection)

select

public void select(int start,
 int end)

select

public void select(int start,
 int end,
 boolean clickAfter)

getSelectionStart

public int getSelectionStart()

getSelectionEnd

public int getSelectionEnd()

setBounds

public void setBounds(int x,
 int y,
 int w,
 int h)

Overrides:

setBounds in class Component

getPreferredSize

public Dimension getPreferredSize()

Overrides:

getPreferredSize in class Component

getMaximumSize

public Dimension getMaximumSize()

Overrides:

getMaximumSize in class Component

getMinimumSize

public Dimension getMinimumSize()

Overrides:

getMinimumSize in class Component

setText

public void setText(String text)

setText2

public void setText2(String text)

insertText

public void insertText(String text)

replaceRange

public void replaceRange(String s,
 int start,
 int end)

getText

public String getText()

setFont

public void setFont(Font font)

Overrides:

setFont in class Component

update

public void update(Graphics g)

Overrides:

update in class Canvas

paint

public void paint(Graphics g)

Overrides:

paint in class Canvas

paint2

public void paint2(Graphics g)

paintRect

void paintRect(Graphics g,
 int x,
 int y,
 int w,
 int h)

drawSelection

public void drawSelection(Graphics g,
 String lastSubstring)

offset2Point

public Point offset2Point(int off,
 boolean start,
 Point p)

findLine

private int findLine(int off,
 boolean start)

point2Offset

public Selection point2Offset(Point p,
 Selection o)

fixLineStarts

private void fixLineStarts(int width)

nextLine

public int nextLine(FontMetrics fMtr,
 int start,
 int width)

findFittingBreak

private int findFittingBreak(FontMetrics fMtr,
 String line,
 int width,
 BreakIterator breaker)

LIU: Finds the longest substring that fits a given width composed of subunits returned by a BreakIterator. If the smallest subunit is too long, returns 0.

Parameters:

fMtr - metrics to use

line - the string to be fix into width

width - line.substring(0, result) must be invalid input: '<'= width

breaker - the BreakIterator that will be used to find subunits

Returns:

maximum characters, at boundaries returned by breaker, that fit into width, or zero on failure

visibleWidth

public int visibleWidth(FontMetrics fMtr,
 String s)

fixHex

private void fixHex()

hex

public static String hex(char ch)