wugle.expressionui
Class ExpressionViewHighlighter

java.lang.Object
  |
  +--wugle.expressionui.ExpressionViewHighlighter

All Implemented Interfaces:

java.util.EventListener, java.awt.event.ItemListener

public class ExpressionViewHighlighter

extends java.lang.Object

implements java.awt.event.ItemListener

Version:

0.1.4

Author:

Malcolm Fortune

Field Summary

protected java.awt.Color	hilightedColor
protected java.awt.Font	hilightedFont
protected int	LEFT
protected java.lang.String	LEFT_PAREN
protected java.awt.Color	normalColor
protected java.awt.Font	normalFont
protected int	RIGHT
protected java.lang.String	RIGHT_PAREN

Constructor Summary

ExpressionViewHighlighter()

ExpressionViewHighlighter(java.awt.Color hilightedColor)
Constructor takes a color to be used for highlighting the text

Method Summary

protected int	getIndex(int startIdx, int direction) Searches left or right from the start pos looking for either a left or right parenthesis respectively.
int	getIndex(int startIdx, int direction, java.lang.String targetString) Searches left or right from the start pos looking for the targetString
protected void	highLightView(java.lang.String expressionString, int buttonIdx) This method gets the left and right indexes(inclusive) for the expression selected and highlights the JComponets between them
void	itemStateChanged(java.awt.event.ItemEvent e) ItemListener interface method
void	registerView(ExpressionSelection expressionGroup, java.util.List expressionList) Registers the class as an item listener for the button group and also takes a referece to the list of JComponents.

Methods inherited from class java.lang.Object

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

Field Detail

LEFT

protected final int LEFT

See Also:

Constant Field Values

RIGHT

protected final int RIGHT

See Also:

Constant Field Values

LEFT_PAREN

protected final java.lang.String LEFT_PAREN

See Also:

Constant Field Values

RIGHT_PAREN

protected final java.lang.String RIGHT_PAREN

See Also:

Constant Field Values

normalFont

protected java.awt.Font normalFont

hilightedFont

protected java.awt.Font hilightedFont

normalColor

protected java.awt.Color normalColor

hilightedColor

protected java.awt.Color hilightedColor

Constructor Detail

ExpressionViewHighlighter

public ExpressionViewHighlighter()

ExpressionViewHighlighter

public ExpressionViewHighlighter(java.awt.Color hilightedColor)

Constructor takes a color to be used for highlighting the text

Method Detail

registerView

public void registerView(ExpressionSelection expressionGroup,
                         java.util.List expressionList)

Registers the class as an item listener for the button group and also takes a referece to the list of JComponents. Also, calls the setFonts method

itemStateChanged

public void itemStateChanged(java.awt.event.ItemEvent e)

ItemListener interface method

Specified by:

itemStateChanged in interface java.awt.event.ItemListener

highLightView

protected void highLightView(java.lang.String expressionString,
                             int buttonIdx)

This method gets the left and right indexes(inclusive) for the expression selected and highlights the JComponets between them

getIndex

protected int getIndex(int startIdx,
                       int direction)

Searches left or right from the start pos looking for either a left or right parenthesis respectively. Increments the zeroTarget variable when an opposite parenthesis is encoutered.

getIndex

public int getIndex(int startIdx,
                    int direction,
                    java.lang.String targetString)

Searches left or right from the start pos looking for the targetString