Adds a highlight to the view.

  Adds a highlight to the view. Returns a tag that can be used
to refer to the highlight.
Returns: an object that can be used as a tag to refer to the highlight
Parameters:
- p0 - the start offset of the range to highlight >= 0
- p1 - the end offset of the range to highlight >= p0
- p - the painter to use to actually render the highlight
Throws:
- BadLocationException - if the specified location is invalid

  Changes a highlight.

  Changes a highlight.
Parameters:
- tag - the highlight tag
- p0 - the beginning of the range >= 0
- p1 - the end of the range >= p0
Throws:
- BadLocationException - if the specified location is invalid

  Called when the UI is being removed from the interface of a JTextComponent.

  Called when the UI is being removed from the interface of
a JTextComponent.
Parameters:
- c - the component
See Also: Highlighter.deinstall(javax.swing.text.JTextComponent),

  Makes a copy of the highlights.

  Makes a copy of the highlights. Does not actually clone each highlight,
but only makes references to them.
Returns: the copy
See Also: Highlighter.getHighlights(),

  Called when the UI is being installed into the interface of a JTextComponent.

  Called when the UI is being installed into the
interface of a JTextComponent. Installs the editor, and
removes any existing highlights.
Parameters:
- c - the editor component
See Also: Highlighter.install(javax.swing.text.JTextComponent),

  Renders the highlights.

  Renders the highlights.
Parameters:
- g - the graphics context

  When leaf Views (such as LabelView) are rendering they should call into this method.

  When leaf Views (such as LabelView) are rendering they should
call into this method. If a highlight is in the given region it will
be drawn immediately.
Parameters:
- g - Graphics used to draw
- p0 - starting offset of view
- p1 - ending offset of view
- viewBounds - Bounds of View
- editor - JTextComponent
- view - View instance being rendered

Removes all highlights.

  Removes a highlight from the view.

  Removes a highlight from the view.
Parameters:
- tag - the reference to the highlight

  If true, highlights are drawn as the Views draw the text.

  If true, highlights are drawn as the Views draw the text. That is
the Views will call into paintLayeredHighlight which
will result in a rectangle being drawn before the text is drawn
(if the offsets are in a highlighted region that is). For this to
work the painter supplied must be an instance of
LayeredHighlightPainter.