jscicalc.Navigator Class Reference

We use a NavigationFilter on the enty and display panels so that we can move the Caret Left and Right along the expression keeping its position between PObject object strings. More...

Inheritance diagram for jscicalc.Navigator:

List of all members.

Public Member Functions
	Navigator ()
	Create a new navigator and set dots to contain only the position one.
void	moveDot (javax.swing.text.NavigationFilter.FilterBypass fb, int dot, javax.swing.text.Position.Bias bias)
	Override default method.
void	setDot (javax.swing.text.NavigationFilter.FilterBypass fb, int dot, javax.swing.text.Position.Bias bias)
	Override default method.
int	getNextVisualPositionFrom (javax.swing.text.JTextComponent text, int pos, javax.swing.text.Position.Bias bias, int direction, javax.swing.text.Position.Bias[] biasRet) throws javax.swing.text.BadLocationException
	Override default method.
java.util.Vector< Integer >	dots ()
	Allow access to dots so that it can be set by something else.
Protected Attributes
java.util.Vector< Integer >	dots
	Use this to translate between position 0, 1, .
final int	MAX = 34
	Used i by setDot;.

---

Detailed Description

We use a NavigationFilter on the enty and display panels so that we can move the Caret Left and Right along the expression keeping its position between PObject object strings.

This makes it easier to have an editable expression.

Author:

J. D. Lamb

Version:

Revision

1.7

See also:

EntryLabel

LeftButton

RightButton

---

Constructor & Destructor Documentation

jscicalc.Navigator.Navigator

(

)

Create a new navigator and set dots to contain only the position one.

References jscicalc.Navigator.dots().

---

Member Function Documentation

void jscicalc.Navigator.moveDot	(	javax.swing.text.NavigationFilter.FilterBypass	fb,
		int	dot,
		javax.swing.text.Position.Bias	bias
	)

Override default method.

This stops us selecting text.

Parameters:

	fb	Used if we want to move the Caret without the move being intercepted by this filter
	dot	The Caret position
	bias	See Sun’s documentation. We pass this on but don’t use it.

References jscicalc.Navigator.setDot().

void jscicalc.Navigator.setDot	(	javax.swing.text.NavigationFilter.FilterBypass	fb,
		int	dot,
		javax.swing.text.Position.Bias	bias
	)

Override default method.

Make sure we’re always ‘between’ PObject objects.

Parameters:

	fb	Used if we want to move the Caret without the move being intercepted by this filter
	dot	The Caret position
	bias	See Sun’s documentation. We pass this on but don’t use it.

References jscicalc.Navigator.dots(), and jscicalc.Navigator.MAX.

Referenced by jscicalc.Navigator.moveDot().

int jscicalc.Navigator.getNextVisualPositionFrom	(	javax.swing.text.JTextComponent	text,
		int	pos,
		javax.swing.text.Position.Bias	bias,
		int	direction,
		javax.swing.text.Position.Bias[]	biasRet
	)			throws javax.swing.text.BadLocationException

Override default method.

Make sure we’re always ‘between’ objects.

Parameters:

	text	See Sun’s documentation. We don’t use this except to pass it on
	pos	The desired Caret position
	bias	See Sun’s documentation. We don’t use this except to pass it on
	direction	See Sun’s documentation. We don’t use this except to pass it on
	biasRet	See Sun’s documentation. We don’t use this except to pass it on

Returns:

A valid position at or near pos

References jscicalc.Navigator.dots().

java.util.Vector<Integer> jscicalc.Navigator.dots

(

)

Allow access to dots so that it can be set by something else.

Returns:

The vector of acceptable Caret positions

Referenced by jscicalc.Navigator.getNextVisualPositionFrom(), jscicalc.Navigator.Navigator(), and jscicalc.Navigator.setDot().

---

Member Data Documentation

java.util.Vector<Integer> jscicalc.Navigator.dots [protected]

Use this to translate between position 0, 1, .

.. , end and the acceptable places for the Caret. For example 3+sin 45 as text (even in html) would have vector (1,2,3,7,8,9) indicating that the Caret can be placed at start, end or between any characters, except that "sin " must be treated as it were a single character.

Referenced by jscicalc.EntryLabel.delete(), jscicalc.ScrollableLabel.getDotPosition(), jscicalc.EntryLabel.insert(), jscicalc.ScrollableLabel.left(), jscicalc.ScrollableLabel.right(), jscicalc.DisplayLabel.ScrollData.ScrollData(), jscicalc.EntryLabel.setExpression(), and jscicalc.DisplayLabel.setExpression().

final int jscicalc.Navigator.MAX = 34 [protected]

Used i by setDot;.

Referenced by jscicalc.Navigator.setDot().

---

The documentation for this class was generated from the following file:

• Navigator.java