brf.j2me.dynaworks.ui
Class TextBox

java.lang.Object
  |
  +--brf.j2me.dynaworks.ui.BasicWidget
        |
        +--brf.j2me.dynaworks.ui.TextBox

All Implemented Interfaces:

UserWidget

Direct Known Subclasses:

ScrollTextBox

public class TextBox

extends BasicWidget

Text box without a border.

Version:

1.0

Author:

Bernd R. Fix

See Also:

BasicWidget, UserWidget

Field Summary

protected int	breakWidth available width.
protected java.lang.String	delimiters line break characters (delimiter).
protected int[]	lineBreaks list of line breaks.
protected int	startLine first line to display.
protected java.lang.String	text string content.

Fields inherited from class brf.j2me.dynaworks.ui.BasicWidget

g, h, w, x, y

Constructor Summary

TextBox(java.lang.String s, int x, int y, int w, int h)
constructor.

Method Summary

protected void	computeLineBreaks() prepare the text by breaking it into lines.
protected int	getBreakPos(int width, java.lang.String buf) Get the position of a line break so that the text fits into the given width.
int	getNumLines() get the number of lines.
java.lang.String	getText() get the text label.
void	paint() Paint the user control.
void	setText(java.lang.String s) set the text label.

Methods inherited from class brf.j2me.dynaworks.ui.BasicWidget

, contains, handleKeyDown, handlePenDown, handlePenMove, handlePenUp, handleSysKeyDown, hasFocus, loseFocus, setFocus

Methods inherited from class java.lang.Object

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

Field Detail

delimiters

protected final java.lang.String delimiters

line break characters (delimiter).

text

protected java.lang.String text

string content.

lineBreaks

protected int[] lineBreaks

list of line breaks.

breakWidth

protected int breakWidth

available width.

startLine

protected int startLine

first line to display.

Constructor Detail

TextBox

public TextBox(java.lang.String s,
               int x,
               int y,
               int w,
               int h)

constructor.

Parameters:

text - String - content of the text box.

x - int - x coordinate of upper-left corner.

y - int - y coordinate of upper-left corner.

w - int - width of the control.

h - int - height of the control.

Method Detail

setText

public void setText(java.lang.String s)

set the text label.

Parameters:

txt - String - new text content of the control.

getText

public java.lang.String getText()

get the text label.

Returns:

String - text content of the control.

getNumLines

public int getNumLines()

get the number of lines.

Returns:

int - number of lines in this box.

paint

public void paint()

Paint the user control.

Overrides:

paint in class BasicWidget

computeLineBreaks

protected void computeLineBreaks()

prepare the text by breaking it into lines.

getBreakPos

protected int getBreakPos(int width,
                          java.lang.String buf)

Get the position of a line break so that the text fits into the given width.

Parameters:

width - int - maximum width of line.

buf - String - content to be split.

Returns:

int - break index (or 0 if no break found).