dspencer 2005/01/07 14:35:15
Added:
contributions/highlighter/src/java/org/apache/lucene/search/highlight
SpanGradientFormatter.java
Log:
Use <span> instead of <font> (as in GradientFormatter) to keep Mozilla happy.
Revision Changes Path
1.1
jakarta-lucene-sandbox/contributions/highlighter/src/java/org/apache/lucene/search/highlight/SpanGradientFormatter.java
Index: SpanGradientFormatter.java
===================================================================
package org.apache.lucene.search.highlight;
/**
* Copyright 2002-2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Formats text with different color intensity depending on the score of the
* term using the span tag. GradientFormatter uses a bgcolor argument to the
font tag which
* doesn't work in Mozilla, thus this class.
*
* @see GradientFormatter
* @author David Spencer [EMAIL PROTECTED]
*/
import org.apache.lucene.search.highlight.*;
public class SpanGradientFormatter
extends GradientFormatter
{
public SpanGradientFormatter(float maxScore, String minForegroundColor,
String maxForegroundColor, String minBackgroundColor,
String maxBackgroundColor)
{
super( maxScore, minForegroundColor,
maxForegroundColor, minBackgroundColor,
maxBackgroundColor);
}
public String highlightTerm(String originalText, TokenGroup tokenGroup)
{
if (tokenGroup.getTotalScore() == 0)
return originalText;
float score = tokenGroup.getTotalScore();
if (score == 0)
{
return originalText;
}
// try to size sb correctly
StringBuffer sb = new StringBuffer( originalText.length() + EXTRA);
sb.append("<span style=\"");
if (highlightForeground)
{
sb.append("color: ");
sb.append(getForegroundColorString(score));
sb.append("; ");
}
if (highlightBackground)
{
sb.append("background: ");
sb.append(getBackgroundColorString(score));
sb.append("; ");
}
sb.append("\">");
sb.append(originalText);
sb.append("</span>");
return sb.toString();
}
// guess how much extra text we'll add to the text we're highlighting
to try to avoid a StringBuffer resize
private static final String TEMPLATE = "<span style=\"background:
#EEEEEE; color: #000000;\">...</span>";
private static final int EXTRA = TEMPLATE.length();
}
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