// BlogBridge -- RSS feed reader, manager, and web based service
// Copyright (C) 2002-2006 by R. Pito Salas
//
// This program is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free Software Foundation;
// either version 2 of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along with this program;
// if not, write to the Free Software Foundation, Inc., 59 Temple Place,
// Suite 330, Boston, MA 02111-1307 USA
//
// Contact: R. Pito Salas
// mailto:pitosalas@users.sourceforge.net
// More information: about BlogBridge
// http://www.blogbridge.com
// http://sourceforge.net/projects/blogbridge
//
// $Id: Highlighter.java,v 1.6 2006/01/08 05:12:59 kyank Exp $
//
package com.salas.bb.views.feeds.html;
import com.salas.bb.domain.utils.TextRange;
import javax.swing.*;
import javax.swing.text.BadLocationException;
import javax.swing.text.DefaultHighlighter;
import java.awt.*;
/**
* Utility class which takes the list of keywords and instance of text area and
* highlights these keywords with a given colors.
*/
final class Highlighter
{
/**
* Highlight ranges in the pane with given color.
*
* @param aPane pane.
* @param aRanges ranges.
* @param aBackground background color.
*/
public static void highlight(JEditorPane aPane, TextRange[] aRanges, Color aBackground)
{
javax.swing.text.Highlighter highlighter = aPane.getHighlighter();
DefaultHighlighter.DefaultHighlightPainter painter =
new DefaultHighlighter.DefaultHighlightPainter(aBackground);
for (int i = 0; i < aRanges.length; i++)
{
TextRange range = aRanges[i];
try
{
highlighter.addHighlight(range.getStart(), range.getEnd(), painter);
} catch (BadLocationException e)
{
// Failed to put highligh marks
}
}
}
/**
* Highlight range in the pane with given color.
*
* @param aPane pane.
* @param aRange range.
* @param aBackground background color.
*/
public static void highlight(JEditorPane aPane, TextRange aRange, Color aBackground)
{
javax.swing.text.Highlighter highlighter = aPane.getHighlighter();
DefaultHighlighter.DefaultHighlightPainter painter =
new DefaultHighlighter.DefaultHighlightPainter(aBackground);
try
{
highlighter.addHighlight(aRange.getStart(), aRange.getEnd(), painter);
} catch (BadLocationException e)
{
// Failed to put highligh marks
}
}
/**
* Removes all highlights.
*
* @param aPane pane.
*/
public static void removeHighlights(JEditorPane aPane)
{
javax.swing.text.Highlighter aHighlighter = aPane.getHighlighter();
aHighlighter.removeAllHighlights();
}
}