Package org.fife.ui.rtextarea

Class LineHighlightManager

java.lang.Object

org.fife.ui.rtextarea.LineHighlightManager

class LineHighlightManager
extends Object

Manages line highlights in an RTextArea.

Version:

1.0

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	LineHighlightManager.LineHighlightInfo	Information about a line highlight.
private static class	LineHighlightManager.LineHighlightInfoComparator	Comparator used when adding new highlights.

Field Summary

Fields

Modifier and Type	Field	Description
private LineHighlightManager.LineHighlightInfoComparator	comparator
private List<LineHighlightManager.LineHighlightInfo>	lineHighlights
private RTextArea	textArea

Constructor Summary

Constructors

Constructor	Description
LineHighlightManager(RTextArea textArea)	Constructor.

Method Summary

Modifier and Type	Method	Description
Object	addLineHighlight(int line, Color color)	Highlights the specified line.
protected List<Object>	getCurrentLineHighlightTags()	Returns the current line highlights' tags.
protected int	getLineHighlightCount()	Returns the current number of line highlights.
void	paintLineHighlights(Graphics g)	Paints any highlighted lines in the specified line range.
void	removeAllLineHighlights()	Removes all line highlights.
void	removeLineHighlight(Object tag)	Removes a line highlight.
private void	repaintLine(LineHighlightManager.LineHighlightInfo lhi)	Repaints the line pointed to by the specified highlight information.

Methods inherited from class java.lang.Object

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

Field Details

textArea

private RTextArea textArea

lineHighlights

private List<LineHighlightManager.LineHighlightInfo> lineHighlights

comparator

private LineHighlightManager.LineHighlightInfoComparator comparator

Constructor Details

LineHighlightManager

LineHighlightManager(RTextArea textArea)

Constructor.

Parameters:

textArea - The parent text area.

Method Details

addLineHighlight

public Object addLineHighlight(int line,
 Color color)
                        throws BadLocationException

Highlights the specified line.

Parameters:

line - The line to highlight.

color - The color to highlight with.

Returns:

A tag for the highlight.

Throws:

BadLocationException - If line is not a valid line number.

See Also:

• removeLineHighlight(Object)

getCurrentLineHighlightTags

protected List<Object> getCurrentLineHighlightTags()

Returns the current line highlights' tags.

Returns:

The current line highlights' tags, or an empty list if there are none.

getLineHighlightCount

protected int getLineHighlightCount()

Returns the current number of line highlights. Useful for testing.

Returns:

The current number of line highlights.

paintLineHighlights

public void paintLineHighlights(Graphics g)

Paints any highlighted lines in the specified line range.

Parameters:

g - The graphics context.

removeAllLineHighlights

public void removeAllLineHighlights()

Removes all line highlights.

See Also:

• removeLineHighlight(Object)

removeLineHighlight

public void removeLineHighlight(Object tag)

Removes a line highlight.

Parameters:

tag - The tag of the line highlight to remove.

See Also:

• addLineHighlight(int, Color)

repaintLine

private void repaintLine(LineHighlightManager.LineHighlightInfo lhi)

Repaints the line pointed to by the specified highlight information.

Parameters:

lhi - The highlight information.