Q2A Mouseover plugin old

<?php

/*
    Question2Answer (c) Gideon Greenspan

    http://www.question2answer.org/


    File: qa-plugin/mouseover-layer/qa-mouseover-layer.php
    Version: See define()s at top of qa-include/qa-base.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 {

        function q_list($q_list)
        {
            if (count(@$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 (count($postids)) {

                //  Retrieve the content for these questions from the database and put into an array

                    $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();
                    $maxlength=qa_opt('mouseover_content_max_len');

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

                    foreach ($q_list['qs'] as $index => $question) {
                        $thispost=@$postinfo[$question['raw']['postid']];

                        if (isset($thispost)) {
                            $text=$thispost['content'];
                            $text=qa_shorten_string_line($text, $maxlength);
                            $q_list['qs'][$index]['content']=$text;
                        }
                    }
                }
            }

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

    }


/*
    Omit PHP closing tag to help avoid accidental output
*/