Q2A Mouseover plugin latest

<?php
/*
    Question2Answer by Gideon Greenspan and contributors
    http://www.question2answer.org/

    File: qa-plugin/mouseover-layer/qa-mouseover-layer.php
    Description: Theme layer class for mouseover layer plugin


    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.

    More about this license: http://www.question2answer.org/license.php
*/

class qa_html_theme_layer extends qa_html_theme_base
{
    public function q_list($q_list)
    {
        if (!empty($q_list['qs']) && qa_opt('mouseover_content_on')) { // first check it is not an empty list and the feature is turned on

            // Collect the question ids of all items in the question list (so we can do this in one DB query)

            $postids = array();
            foreach ($q_list['qs'] as $question) {
                if (isset($question['raw']['postid']))
                    $postids[] = $question['raw']['postid'];
            }

            if (!empty($postids)) {

                // Retrieve the content for these questions from the database

                $maxlength = qa_opt('mouseover_content_max_len');
                $result = qa_db_query_sub('SELECT postid, content, format FROM ^posts WHERE postid IN (#)', $postids);
                $postinfo = qa_db_read_all_assoc($result, 'postid');

                // Get the regular expression fragment to use for blocked words and the maximum length of content to show

                $blockwordspreg = qa_get_block_words_preg();

                // Now add the popup to the title for each question

                foreach ($q_list['qs'] as $index => $question) {
                    if (isset($postinfo[$question['raw']['postid']])) {
                        $thispost = $postinfo[$question['raw']['postid']];
                        ///////
                        $q_list['qs'][$index]['content'] = $thispost['content']; //Added by ajayver for displaying question content on the main page 24.02.2016
                        ///////
                        $text = qa_viewer_text($thispost['content'], $thispost['format'], array('blockwordspreg' => $blockwordspreg));
                        $text = preg_replace('/\s+/', ' ', $text);  // Remove duplicated blanks, new line characters, tabs, etc
                        $text = qa_shorten_string_line($text, $maxlength);
                        $title = isset($question['title']) ? $question['title'] : '';
                        $q_list['qs'][$index]['title'] = $this->getHtmlTitle(qa_html($text), $title);

                    }
                }
            }
        }

        parent::q_list($q_list); // call back through to the default function
    }

    /**
     * Returns the needed HTML to display the tip. Depending on the theme in use, this might need to be
     * tuned in order for the tip to be displayed properly
     *
     * @access private
     * @param string $mouseOverText Text of the tip
     * @param string $questionTitle Question title
     * @return string HTML needed to display the tip and the question title
     */
    private function getHtmlTitle($mouseOverText, $questionTitle)
    {
        return sprintf('<span title="%s">%s</span>', $mouseOverText, $questionTitle);
    }
}