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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Search_Lucene
* @subpackage Search
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Default.php 18946 2009-11-12 11:48:58Z alexander $
*/
/** @see Zend_Search_Lucene_Search_Highlighter_Interface */
require_once 'Zend/Search/Lucene/Search/Highlighter/Interface.php';
/**
* @category Zend
* @package Zend_Search_Lucene
* @subpackage Search
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Search_Lucene_Search_Highlighter_Default implements Zend_Search_Lucene_Search_Highlighter_Interface
{
/**
* List of colors for text highlighting
*
* @var array
*/
protected $_highlightColors = array('#66ffff', '#ff66ff', '#ffff66',
'#ff8888', '#88ff88', '#8888ff',
'#88dddd', '#dd88dd', '#dddd88',
'#aaddff', '#aaffdd', '#ddaaff',
'#ddffaa', '#ffaadd', '#ffddaa');
/**
* Index of current color for highlighting
*
* Index is increased at each highlight() call, so terms matching different queries are highlighted using different colors.
*
* @var integer
*/
protected $_currentColorIndex = 0;
/**
* HTML document for highlighting
*
* @var Zend_Search_Lucene_Document_Html
*/
protected $_doc;
/**
* Set document for highlighting.
*
* @param Zend_Search_Lucene_Document_Html $document
*/
public function setDocument(Zend_Search_Lucene_Document_Html $document)
{
$this->_doc = $document;
}
/**
* Get document for highlighting.
*
* @return Zend_Search_Lucene_Document_Html $document
*/
public function getDocument()
{
return $this->_doc;
}
/**
* Highlight specified words
*
* @param string|array $words Words to highlight. They could be organized using the array or string.
*/
public function highlight($words)
{
$color = $this->_highlightColors[$this->_currentColorIndex];
$this->_currentColorIndex = ($this->_currentColorIndex + 1) % count($this->_highlightColors);
$this->_doc->highlight($words, $color);
}
}
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