mod/resource/type/ims/preview.php

   1 <?php // $Id$
   2
   3     require_once('../../../../config.php');
   4     require_once('../../lib.php');
   5     require_once('resource.class.php');
   6     require_once('../../../../backup/lib.php');
   7     require_once('../../../../lib/filelib.php');
   8     require_once('../../../../lib/xmlize.php');
   9
  10     require_once('repository_config.php');
  11
  12     $directory = required_param ('directory', PARAM_PATH);
  13     $choose = optional_param ('choose', 'id_reference_value', PARAM_FILE);
  14     $page = optional_param ('page', 0, PARAM_INT);
  15
  16 /// Calculate the path of the IMS CP to be displayed
  17     $deploydir = $CFG->repository . '/' . $directory;
  18
  19 /// Confirm that the IMS package has been deployed. Hash not generated
  20 /// for repository ones.
  21     if (!file_exists($deploydir.'/moodle_inx.ser')) {
  22             $errortext = "Not Deployed";
  23             print_header();
  24             print_simple_box_start('center', '60%');
  25             echo '<p align="center">'.$errortext.'</p>';
  26             print_footer();
  27             exit;
  28     }
  29
  30 /// Load serialized IMS CP index to memory only once.
  31     if (empty($items)) {
  32         if (!$items = ims_load_serialized_file($deploydir.'/moodle_inx.ser')) {
  33             error (get_string('errorreadingfile', 'error', 'moodle_inx.ser'));
  34         }
  35     }
  36
  37 /// fast forward to first non-index page
  38     while (empty($items[$page]->href)) $page++;
  39
  40 /// Select direction
  41     if (get_string('thisdirection') == 'rtl') {
  42         $direction = ' dir="rtl"';
  43     } else {
  44         $direction = ' dir="ltr"';
  45     }
  46
  47 /// Conditional argument to pass to IMS JavaScript. Need to be global to retrieve it from our custom javascript! :-(
  48     global $jsarg;
  49     $jsarg = 'true';
  50 /// Define $CFG->javascript to use our custom javascript. Save the original one to add it from ours. Global too! :-(
  51     global $standard_javascript;
  52     $standard_javascript = $CFG->javascript;  // Save original javascript file
  53     $CFG->javascript = $CFG->dirroot.'/mod/resource/type/ims/javascript.php';  //Use our custom IMS javascript code
  54
  55 /// The output here
  56
  57 /// moodle header
  58     print_header();
  59 /// content - this produces everything else
  60
  61 /// adds side navigation bar if needed. must also adjust width of iframe to accomodate
  62     echo "<div id=\"ims-menudiv\">";
  63     preview_buttons($directory, $items['title'], $choose);
  64     echo preview_ims_generate_toc($items, $directory, 0, $page); echo "</div>";
  65
  66     $fullurl = "$CFG->repositorywebroot/$directory/".$items[$page]->href;
  67 /// prints iframe filled with $fullurl ;width:".$iframewidth." missing also height=\"420px\"
  68     echo "<iframe id=\"ims-contentframe\" name=\"ims-contentframe\" src=\"{$fullurl}\"></iframe>"; //Content frame
  69 /// moodle footer
  70     echo "</div></div><script type=\"text/javascript\">resizeiframe($jsarg);</script></body></html>";
  71
  72     /*** This function will generate the TOC file for the package
  73      *   from an specified parent to be used in the view of the IMS
  74      */
  75     function preview_ims_generate_toc($items, $directory, $page=0, $selected_page) {
  76         global $CFG;
  77
  78         $contents = '';
  79
  80     /// Configure links behaviour
  81         $fullurl = '?directory='.$directory.'&amp;page=';
  82
  83     /// Iterate over items to build the menu
  84         $currlevel = 0;
  85         $currorder = 0;
  86         $endlevel  = 0;
  87         $openlielement = false;
  88         foreach ($items as $item) {
  89             if (!is_object($item)) {
  90                 continue;
  91             }
  92         /// Skip pages until we arrive to $page
  93             if ($item->id < $page) {
  94                 continue;
  95             }
  96         /// Arrive to page, we store its level
  97             if ($item->id == $page) {
  98                 $endlevel = $item->level;
  99                 continue;
 100             }
 101         /// We are after page and inside it (level > endlevel)
 102             if ($item->id > $page && $item->level > $endlevel) {
 103             /// Start Level
 104                 if ($item->level > $currlevel) {
 105                     $contents .= '<ol class="listlevel_'.$item->level.'">';
 106                     $openlielement = false;
 107                 }
 108             /// End Level
 109                 if ($item->level < $currlevel) {
 110                     $contents .= '</li>';
 111                     $contents .= '</ol>';
 112                 }
 113             /// If we have some openlielement, just close it
 114                 if ($openlielement) {
 115                     $contents .= '</li>';
 116                 }
 117             /// Add item
 118                 $contents .= '<li>';
 119                 if (!empty($item->href)) {
 120                     if ($item->id == $selected_page) $contents .= '<div id="ims-toc-selected">';
 121                     $contents .= '<a href="'.$fullurl.$item->id.'" target="_parent">'.$item->title.'</a>';
 122                     if ($item->id == $selected_page) $contents .= '</div>';
 123                 } else {
 124                     $contents .= $item->title;
 125                 }
 126                 $currlevel = $item->level;
 127                 $openlielement = true;
 128                 continue;
 129             }
 130         /// We have reached endlevel, exit
 131             if ($item->id > $page && $item->level <= $endlevel) {
 132                 break;
 133             }
 134         }
 135     /// Close up to $endlevel
 136         for ($i=$currlevel;$i>$endlevel;$i--) {
 137             $contents .= '</li>';
 138             $contents .= '</ol>';
 139         }
 140
 141         return $contents;
 142     }
 143
 144     function preview_buttons($directory, $name, $choose='') {
 145         $strchoose = get_string('choose','resource');
 146         $strback = get_string('back','resource');
 147
 148         $path = $directory;
 149         $arr = explode('/', $directory);
 150         array_pop($arr);
 151         $directory = implode('/', $arr);
 152         ?>
 153         <script type="text/javascript">
 154         //<![CDATA[
 155         function set_value(txt) {
 156             opener.document.getElementById('<?php echo $choose ?>').value = txt;
 157             window.close();
 158         }
 159         //]]>
 160         </script>
 161         <?php
 162         echo "<div id=\"ims_preview_buttons\" style=\"padding:10px;\">".
 163              "(<a href=\"finder.php?directory=$directory&amp;choose=$choose\">$strback</a>) ".
 164              "(<a onclick=\"return set_value('#$path')\" href=\"#\">$strchoose</a>)</div>";
 165     }
 166
 167 ?>