mod/wiki/renderer.php

   1 <?php
   2
   3 // This file is part of Moodle - http://moodle.org/
   4 //
   5 // Moodle is free software: you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation, either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // Moodle is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 /**
  19  * Moodle Wiki 2.0 Renderer
  20  *
  21  * @package   mod_wiki
  22  * @copyright 2010 Dongsheng Cai <dongsheng@moodle.com>
  23  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24  */
  25
  26 defined('MOODLE_INTERNAL') || die();
  27
  28 class mod_wiki_renderer extends plugin_renderer_base {
  29     public function page_index() {
  30         global $CFG;
  31         $output = '';
  32         // Checking wiki instance
  33         if (!$wiki = wiki_get_wiki($this->page->cm->instance)) {
  34             return false;
  35         }
  36
  37         // @TODO: Fix call to wiki_get_subwiki_by_group
  38         $gid = groups_get_activity_group($this->page->cm);
  39         $gid = !empty($gid) ? $gid : 0;
  40         if (!$subwiki = wiki_get_subwiki_by_group($this->page->cm->instance, $gid)) {
  41             return false;
  42         }
  43         $swid = $subwiki->id;
  44         $pages = wiki_get_page_list($swid);
  45         $selectoptions = array();
  46         foreach ($pages as $page) {
  47             $selectoptions[$page->id] = format_string($page->title, true, array('context' => $this->page->context));
  48         }
  49         $label = get_string('pageindex', 'wiki') . ': ';
  50         $select = new single_select(new moodle_url('/mod/wiki/view.php'), 'pageid', $selectoptions);
  51         $select->label = $label;
  52         return $this->output->container($this->output->render($select), 'wiki_index');
  53     }
  54
  55     public function search_result($records, $subwiki) {
  56         global $CFG;
  57         $table = new html_table();
  58         $context = context_module::instance($this->page->cm->id);
  59         $strsearchresults = get_string('searchresult', 'wiki');
  60         $totalcount = count($records);
  61         $html = $this->output->heading("$strsearchresults $totalcount", 3);
  62         foreach ($records as $page) {
  63             $table->head = array('title' => format_string($page->title) . ' (' . html_writer::link($CFG->wwwroot . '/mod/wiki/view.php?pageid=' . $page->id, get_string('view', 'wiki')) . ')');
  64             $table->align = array('title' => 'left');
  65             $table->width = '100%';
  66             $table->data = array(array(file_rewrite_pluginfile_urls(format_text($page->cachedcontent, FORMAT_HTML), 'pluginfile.php', $context->id, 'mod_wiki', 'attachments', $subwiki->id)));
  67             $table->colclasses = array('wikisearchresults');
  68             $html .= html_writer::table($table);
  69         }
  70         $html = html_writer::tag('div', $html, array('class'=>'no-overflow'));
  71         return $this->output->container($html);
  72     }
  73
  74     public function diff($pageid, $old, $new, $options = array()) {
  75         global $CFG;
  76         if (!empty($options['total'])) {
  77             $total = $options['total'];
  78         } else {
  79             $total = 0;
  80         }
  81         $diff1 = format_text($old->diff, FORMAT_HTML, array('overflowdiv'=>true));
  82         $diff2 = format_text($new->diff, FORMAT_HTML, array('overflowdiv'=>true));
  83         $strdatetime = get_string('strftimedatetime', 'langconfig');
  84
  85         $olduser = $old->user;
  86         $versionlink = new moodle_url('/mod/wiki/viewversion.php', array('pageid' => $pageid, 'versionid' => $old->id));
  87         $restorelink = new moodle_url('/mod/wiki/restoreversion.php', array('pageid' => $pageid, 'versionid' => $old->id));
  88         $userlink = new moodle_url('/user/view.php', array('id' => $olduser->id));
  89         // view version link
  90         $oldversionview = ' ';
  91         $oldversionview .= html_writer::link($versionlink->out(false), get_string('view', 'wiki'), array('class' => 'wiki_diffview'));
  92         $oldversionview .= ' ';
  93         // restore version link
  94         $oldversionview .= html_writer::link($restorelink->out(false), get_string('restore', 'wiki'), array('class' => 'wiki_diffview'));
  95
  96         // userinfo container
  97         $oldheading = $this->output->container_start('wiki_diffuserleft');
  98         // username
  99         $oldheading .= html_writer::link($CFG->wwwroot . '/user/view.php?id=' . $olduser->id, fullname($olduser)) . '&nbsp;';
 100         // user picture
 101         $oldheading .= html_writer::link($userlink->out(false), $this->output->user_picture($olduser, array('popup' => true)), array('class' => 'notunderlined'));
 102         $oldheading .= $this->output->container_end();
 103
 104         // version number container
 105         $oldheading .= $this->output->container_start('wiki_diffversion');
 106         $oldheading .= get_string('version') . ' ' . $old->version . $oldversionview;
 107         $oldheading .= $this->output->container_end();
 108         // userdate container
 109         $oldheading .= $this->output->container_start('wiki_difftime');
 110         $oldheading .= userdate($old->timecreated, $strdatetime);
 111         $oldheading .= $this->output->container_end();
 112
 113         $newuser = $new->user;
 114         $versionlink = new moodle_url('/mod/wiki/viewversion.php', array('pageid' => $pageid, 'versionid' => $new->id));
 115         $restorelink = new moodle_url('/mod/wiki/restoreversion.php', array('pageid' => $pageid, 'versionid' => $new->id));
 116         $userlink = new moodle_url('/user/view.php', array('id' => $newuser->id));
 117
 118         $newversionview = ' ';
 119         $newversionview .= html_writer::link($versionlink->out(false), get_string('view', 'wiki'), array('class' => 'wiki_diffview'));
 120         // new user info
 121         $newheading = $this->output->container_start('wiki_diffuserright');
 122         $newheading .= $this->output->user_picture($newuser, array('popup' => true));
 123
 124         $newheading .= html_writer::link($userlink->out(false), fullname($newuser), array('class' => 'notunderlined'));
 125         $newheading .= $this->output->container_end();
 126
 127         // version
 128         $newheading .= $this->output->container_start('wiki_diffversion');
 129         $newheading .= get_string('version') . '&nbsp;' . $new->version . $newversionview;
 130         $newheading .= $this->output->container_end();
 131         // userdate
 132         $newheading .= $this->output->container_start('wiki_difftime');
 133         $newheading .= userdate($new->timecreated, $strdatetime);
 134         $newheading .= $this->output->container_end();
 135
 136         $oldheading = html_writer::tag('div', $oldheading, array('class'=>'wiki-diff-heading header clearfix'));
 137         $newheading = html_writer::tag('div', $newheading, array('class'=>'wiki-diff-heading header clearfix'));
 138
 139         $output  = '';
 140         $output .= html_writer::start_tag('div', array('class'=>'wiki-diff-container clearfix'));
 141         $output .= html_writer::tag('div', $oldheading.$diff1, array('class'=>'wiki-diff-leftside'));
 142         $output .= html_writer::tag('div', $newheading.$diff2, array('class'=>'wiki-diff-rightside'));
 143         $output .= html_writer::end_tag('div');
 144
 145         if (!empty($total)) {
 146             $output .= '<div class="wiki_diff_paging">';
 147             $output .= $this->output->container($this->diff_paging_bar(1, $new->version - 1, $old->version, $CFG->wwwroot . '/mod/wiki/diff.php?pageid=' . $pageid . '&amp;comparewith=' . $new->version . '&amp;', 'compare', false, true), 'wiki_diff_oldpaging');
 148             $output .= $this->output->container($this->diff_paging_bar($old->version + 1, $total, $new->version, $CFG->wwwroot . '/mod/wiki/diff.php?pageid=' . $pageid . '&amp;compare=' . $old->version . '&amp;', 'comparewith', false, true), 'wiki_diff_newpaging');
 149             $output .= '</div>';
 150         }
 151
 152         return $output;
 153     }
 154
 155     /**
 156      * Prints a single paging bar to provide access to other versions
 157      *
 158      * @param int $minpage First page to be displayed in the bar
 159      * @param int $maxpage Last page to be displayed in the bar
 160      * @param int $page The page you are currently viewing
 161      * @param mixed $baseurl If this  is a string then it is the url which will be appended with $pagevar, an equals sign and the page number.
 162      *                          If this is a moodle_url object then the pagevar param will be replaced by the page no, for each page.
 163      * @param string $pagevar This is the variable name that you use for the page number in your code (ie. 'tablepage', 'blogpage', etc)
 164      * @param bool $nocurr do not display the current page as a link
 165      * @param bool $return whether to return an output string or echo now
 166      * @return bool or string
 167      */
 168     public function diff_paging_bar($minpage, $maxpage, $page, $baseurl, $pagevar = 'page', $nocurr = false) {
 169         $totalcount = $maxpage - $minpage;
 170         $maxdisplay = 2;
 171         $output = '';
 172
 173         if ($totalcount > 0) {
 174             $output .= '<div class="paging">';
 175             $output .= get_string('version', 'wiki') . ':';
 176             if ($page - $minpage > 0) {
 177                 $pagenum = $page - 1;
 178                 if (!is_a($baseurl, 'moodle_url')) {
 179                     $output .= '&nbsp;(<a class="previous" href="' . $baseurl . $pagevar . '=' . $pagenum . '">' . get_string('previous') . '</a>)&nbsp;';
 180                 } else {
 181                     $output .= '&nbsp;(<a class="previous" href="' . $baseurl->out(false, array($pagevar => $pagenum)) . '">' . get_string('previous') . '</a>)&nbsp;';
 182                 }
 183             }
 184
 185             if ($page - $minpage > 4) {
 186                 $startpage = $page - 3;
 187                 if (!is_a($baseurl, 'moodle_url')) {
 188                     $output .= '&nbsp;<a href="' . $baseurl . $pagevar . '=' . $minpage . '">' . $minpage . '</a>&nbsp;...';
 189                 } else {
 190                     $output .= '&nbsp;<a href="' . $baseurl->out(false, array($pagevar => $minpage)) . '">' . $minpage . '</a>&nbsp;...';
 191                 }
 192             } else {
 193                 $startpage = $minpage;
 194             }
 195             $currpage = $startpage;
 196             $displaycount = 0;
 197             while ($displaycount < $maxdisplay and $currpage <= $maxpage) {
 198                 if ($page == $currpage && empty($nocurr)) {
 199                     $output .= '&nbsp;&nbsp;' . $currpage;
 200                 } else {
 201                     if (!is_a($baseurl, 'moodle_url')) {
 202                         $output .= '&nbsp;&nbsp;<a href="' . $baseurl . $pagevar . '=' . $currpage . '">' . $currpage . '</a>';
 203                     } else {
 204                         $output .= '&nbsp;&nbsp;<a href="' . $baseurl->out(false, array($pagevar => $currpage)) . '">' . $currpage . '</a>';
 205                     }
 206
 207                 }
 208                 $displaycount++;
 209                 $currpage++;
 210             }
 211             if ($currpage < $maxpage) {
 212                 if (!is_a($baseurl, 'moodle_url')) {
 213                     $output .= '&nbsp;...<a href="' . $baseurl . $pagevar . '=' . $maxpage . '">' . $maxpage . '</a>&nbsp;';
 214                 } else {
 215                     $output .= '&nbsp;...<a href="' . $baseurl->out(false, array($pagevar => $maxpage)) . '">' . $maxpage . '</a>&nbsp;';
 216                 }
 217             } else if ($currpage == $maxpage) {
 218                 if (!is_a($baseurl, 'moodle_url')) {
 219                     $output .= '&nbsp;&nbsp;<a href="' . $baseurl . $pagevar . '=' . $currpage . '">' . $currpage . '</a>';
 220                 } else {
 221                     $output .= '&nbsp;&nbsp;<a href="' . $baseurl->out(false, array($pagevar => $currpage)) . '">' . $currpage . '</a>';
 222                 }
 223             }
 224             $pagenum = $page + 1;
 225             if ($page != $maxpage) {
 226                 if (!is_a($baseurl, 'moodle_url')) {
 227                     $output .= '&nbsp;&nbsp;(<a class="next" href="' . $baseurl . $pagevar . '=' . $pagenum . '">' . get_string('next') . '</a>)';
 228                 } else {
 229                     $output .= '&nbsp;&nbsp;(<a class="next" href="' . $baseurl->out(false, array($pagevar => $pagenum)) . '">' . get_string('next') . '</a>)';
 230                 }
 231             }
 232             $output .= '</div>';
 233         }
 234
 235         return $output;
 236     }
 237     public function wiki_info() {
 238         global $USER;
 239
 240         // Display any activity information (eg completion requirements / dates).
 241         $cminfo = cm_info::create($this->page->cm);
 242         $completiondetails = \core_completion\cm_completion_details::get_instance($cminfo, $USER->id);
 243         $activitydates = \core\activity_dates::get_dates_for_module($cminfo, $USER->id);
 244         $info = $this->output->activity_information($cminfo, $completiondetails, $activitydates);
 245
 246         // Add the rest of the wiki info.
 247         $info .= $this->output->box(format_module_intro('wiki',
 248                 $this->page->activityrecord, $this->page->cm->id), 'generalbox', 'intro');
 249
 250         return $info;
 251     }
 252
 253     public function tabs($page, $tabitems, $options) {
 254         $tabs = array();
 255         $context = context_module::instance($this->page->cm->id);
 256
 257         $pageid = null;
 258         if (!empty($page)) {
 259             $pageid = $page->id;
 260         }
 261
 262         $selected = $options['activetab'];
 263
 264         // make specific tab linked even it is active
 265         if (!empty($options['linkedwhenactive'])) {
 266             $linked = $options['linkedwhenactive'];
 267         } else {
 268             $linked = '';
 269         }
 270
 271         if (!empty($options['inactivetabs'])) {
 272             $inactive = $options['inactivetabs'];
 273         } else {
 274             $inactive = array();
 275         }
 276
 277         foreach ($tabitems as $tab) {
 278             if ($tab == 'edit' && !has_capability('mod/wiki:editpage', $context)) {
 279                 continue;
 280             }
 281             if ($tab == 'comments' && !has_capability('mod/wiki:viewcomment', $context)) {
 282                 continue;
 283             }
 284             if ($tab == 'files' && !has_capability('mod/wiki:viewpage', $context)) {
 285                 continue;
 286             }
 287             if (($tab == 'view' || $tab == 'map' || $tab == 'history') && !has_capability('mod/wiki:viewpage', $context)) {
 288                 continue;
 289             }
 290             if ($tab == 'admin' && !has_capability('mod/wiki:managewiki', $context)) {
 291                 continue;
 292             }
 293             $link = new moodle_url('/mod/wiki/'. $tab. '.php', array('pageid' => $pageid));
 294             if ($linked == $tab) {
 295                 $tabs[] = new tabobject($tab, $link, get_string($tab, 'wiki'), '', true);
 296             } else {
 297                 $tabs[] = new tabobject($tab, $link, get_string($tab, 'wiki'));
 298             }
 299         }
 300
 301         return $this->tabtree($tabs, $selected, $inactive);
 302     }
 303
 304     public function prettyview_link($page) {
 305         $html = '';
 306         $link = new moodle_url('/mod/wiki/prettyview.php', array('pageid' => $page->id));
 307         $html .= $this->output->container_start('wiki_right');
 308         $html .= $this->output->action_link($link, get_string('prettyprint', 'wiki'), new popup_action('click', $link), array('class' => 'printicon'));
 309         $html .= $this->output->container_end();
 310         return $html;
 311     }
 312
 313     public function wiki_print_subwiki_selector($wiki, $subwiki, $page, $pagetype = 'view') {
 314         global $CFG, $USER;
 315         require_once($CFG->dirroot . '/user/lib.php');
 316         $cm = get_coursemodule_from_instance('wiki', $wiki->id);
 317
 318         switch ($pagetype) {
 319         case 'files':
 320             $baseurl = new moodle_url('/mod/wiki/files.php',
 321                     array('wid' => $wiki->id, 'title' => $page->title, 'pageid' => $page->id));
 322             break;
 323         case 'search':
 324             $search = optional_param('searchstring', null, PARAM_TEXT);
 325             $searchcontent = optional_param('searchwikicontent', 0, PARAM_INT);
 326             $baseurl = new moodle_url('/mod/wiki/search.php',
 327                     array('cmid' => $cm->id, 'courseid' => $cm->course,
 328                         'searchstring' => $search, 'searchwikicontent' => $searchcontent));
 329             break;
 330         case 'view':
 331         default:
 332             $baseurl = new moodle_url('/mod/wiki/view.php',
 333                     array('wid' => $wiki->id, 'title' => $page->title));
 334             break;
 335         }
 336
 337         $context = context_module::instance($cm->id);
 338         // @TODO: A plenty of duplicated code below this lines.
 339         // Create private functions.
 340         switch (groups_get_activity_groupmode($cm)) {
 341         case NOGROUPS:
 342             if ($wiki->wikimode == 'collaborative') {
 343                 // No need to print anything
 344                 return;
 345             } else if ($wiki->wikimode == 'individual') {
 346                 // We have private wikis here
 347
 348                 $view = has_capability('mod/wiki:viewpage', $context);
 349                 $manage = has_capability('mod/wiki:managewiki', $context);
 350
 351                 // Only people with these capabilities can view all wikis
 352                 if ($view && $manage) {
 353                     // @TODO: Print here a combo that contains all users.
 354                     $users = get_enrolled_users($context);
 355                     $options = array();
 356                     foreach ($users as $user) {
 357                         $options[$user->id] = fullname($user);
 358                     }
 359
 360                     echo $this->output->container_start('wiki_right');
 361                     $name = 'uid';
 362                     $selected = $subwiki->userid;
 363                     echo $this->output->single_select($baseurl, $name, $options, $selected, null, null,
 364                         array('label' => get_string('user') . ':'));
 365                     echo $this->output->container_end();
 366                 }
 367                 return;
 368             } else {
 369                 // error
 370                 return;
 371             }
 372         case SEPARATEGROUPS:
 373             if ($wiki->wikimode == 'collaborative') {
 374                 // We need to print a select to choose a course group
 375
 376                 echo $this->output->container_start('wiki_right');
 377                 groups_print_activity_menu($cm, $baseurl);
 378                 echo $this->output->container_end();
 379                 return;
 380             } else if ($wiki->wikimode == 'individual') {
 381                 //  @TODO: Print here a combo that contains all users of that subwiki.
 382                 $view = has_capability('mod/wiki:viewpage', $context);
 383                 $manage = has_capability('mod/wiki:managewiki', $context);
 384
 385                 // Only people with these capabilities can view all wikis
 386                 if ($view && $manage) {
 387                     $users = get_enrolled_users($context);
 388                     $options = array();
 389                     foreach ($users as $user) {
 390                         $groups = groups_get_all_groups($cm->course, $user->id);
 391                         if (!empty($groups)) {
 392                             foreach ($groups as $group) {
 393                                 $options[$group->id][$group->name][$group->id . '-' . $user->id] = fullname($user);
 394                             }
 395                         } else {
 396                             $name = get_string('notingroup', 'wiki');
 397                             $options[0][$name]['0' . '-' . $user->id] = fullname($user);
 398                         }
 399                     }
 400                 } else {
 401                     $group = groups_get_group($subwiki->groupid);
 402                     if (!$group) {
 403                         return;
 404                     }
 405                     $users = groups_get_members($subwiki->groupid);
 406                     foreach ($users as $user) {
 407                         $options[$group->id][$group->name][$group->id . '-' . $user->id] = fullname($user);
 408                     }
 409                 }
 410                 echo $this->output->container_start('wiki_right');
 411                 $name = 'groupanduser';
 412                 $selected = $subwiki->groupid . '-' . $subwiki->userid;
 413                 echo $this->output->single_select($baseurl, $name, $options, $selected, null, null,
 414                     array('label' => get_string('user') . ':'));
 415                 echo $this->output->container_end();
 416
 417                 return;
 418
 419             } else {
 420                 // error
 421                 return;
 422             }
 423         CASE VISIBLEGROUPS:
 424             if ($wiki->wikimode == 'collaborative') {
 425                 // We need to print a select to choose a course group
 426                 // moodle_url will take care of encoding for us
 427
 428                 echo $this->output->container_start('wiki_right');
 429                 groups_print_activity_menu($cm, $baseurl);
 430                 echo $this->output->container_end();
 431                 return;
 432
 433             } else if ($wiki->wikimode == 'individual') {
 434                 $users = get_enrolled_users($context);
 435                 $options = array();
 436                 foreach ($users as $user) {
 437                     $groups = groups_get_all_groups($cm->course, $user->id);
 438                     if (!empty($groups)) {
 439                         foreach ($groups as $group) {
 440                             $options[$group->id][$group->name][$group->id . '-' . $user->id] = fullname($user);
 441                         }
 442                     } else {
 443                         $name = get_string('notingroup', 'wiki');
 444                         $options[0][$name]['0' . '-' . $user->id] = fullname($user);
 445                     }
 446                 }
 447
 448                 echo $this->output->container_start('wiki_right');
 449                 $name = 'groupanduser';
 450                 $selected = $subwiki->groupid . '-' . $subwiki->userid;
 451                 echo $this->output->single_select($baseurl, $name, $options, $selected, null, null,
 452                     array('label' => get_string('user') . ':'));
 453                 echo $this->output->container_end();
 454
 455                 return;
 456
 457             } else {
 458                 // error
 459                 return;
 460             }
 461         default:
 462             // error
 463             return;
 464
 465         }
 466
 467     }
 468
 469     function menu_map($pageid, $currentselect) {
 470         if (empty($currentselect)) {
 471             // The wiki uses digit number to match the options and 5 is the default one.
 472             $currentselect = 5;
 473         }
 474         $options = array('contributions', 'links', 'orphaned', 'pageindex', 'pagelist', 'updatedpages');
 475         $items = array();
 476         foreach ($options as $opt) {
 477             $items[] = get_string($opt, 'wiki');
 478         }
 479         $selectoptions = array();
 480         foreach ($items as $key => $item) {
 481             $selectoptions[$key + 1] = $item;
 482         }
 483         $select = new single_select(new moodle_url('/mod/wiki/map.php', array('pageid' => $pageid)), 'option', $selectoptions, $currentselect, null);
 484         $select->label = get_string('mapmenu', 'wiki') . ': ';
 485         return $this->output->container($this->output->render($select), 'midpad');
 486     }
 487     public function wiki_files_tree($context, $subwiki) {
 488         return $this->render(new wiki_files_tree($context, $subwiki));
 489     }
 490     public function render_wiki_files_tree(wiki_files_tree $tree) {
 491         if (empty($tree->dir['subdirs']) && empty($tree->dir['files'])) {
 492             $html = $this->output->box(get_string('nofilesavailable', 'repository'));
 493         } else {
 494             $htmlid = 'wiki_files_tree_'.uniqid();
 495             $module = array('name'=>'mod_wiki', 'fullpath'=>'/mod/wiki/module.js');
 496             $this->page->requires->js_init_call('M.mod_wiki.init_tree', array(false, $htmlid), false, $module);
 497             $html = '<div id="'.$htmlid.'">';
 498             $html .= $this->htmllize_tree($tree, $tree->dir);
 499             $html .= '</div>';
 500         }
 501         return $html;
 502     }
 503
 504     function menu_admin($pageid, $currentselect) {
 505         $options = array('removepages', 'deleteversions');
 506         $items = array();
 507         foreach ($options as $opt) {
 508             $items[] = get_string($opt, 'wiki');
 509         }
 510         $selectoptions = array();
 511         foreach ($items as $key => $item) {
 512             $selectoptions[$key + 1] = $item;
 513         }
 514         $select = new single_select(new moodle_url('/mod/wiki/admin.php', array('pageid' => $pageid)), 'option', $selectoptions, $currentselect, null);
 515         $select->label = get_string('adminmenu', 'wiki') . ': ';
 516         return $this->output->container($this->output->render($select), 'midpad');
 517     }
 518
 519     /**
 520      * Internal function - creates htmls structure suitable for YUI tree.
 521      */
 522     protected function htmllize_tree($tree, $dir) {
 523         global $CFG;
 524         $yuiconfig = array();
 525         $yuiconfig['type'] = 'html';
 526
 527         if (empty($dir['subdirs']) and empty($dir['files'])) {
 528             return '';
 529         }
 530         $result = '<ul>';
 531         foreach ($dir['subdirs'] as $subdir) {
 532             $image = $this->output->pix_icon(file_folder_icon(), $subdir['dirname'], 'moodle', array('class'=>'icon'));
 533             $result .= '<li yuiConfig=\''.json_encode($yuiconfig).'\'><div>'.$image.' '.s($subdir['dirname']).'</div> '.$this->htmllize_tree($tree, $subdir).'</li>';
 534         }
 535         foreach ($dir['files'] as $file) {
 536             $url = file_encode_url("$CFG->wwwroot/pluginfile.php", '/'.$tree->context->id.'/mod_wiki/attachments/' . $tree->subwiki->id . '/'. $file->get_filepath() . $file->get_filename(), true);
 537             $filename = $file->get_filename();
 538             $image = $this->output->pix_icon(file_file_icon($file), $filename, 'moodle', array('class'=>'icon'));
 539             $result .= '<li yuiConfig=\''.json_encode($yuiconfig).'\'><div>'.$image.' '.html_writer::link($url, $filename).'</div></li>';
 540         }
 541         $result .= '</ul>';
 542
 543         return $result;
 544     }
 545 }
 546
 547 class wiki_files_tree implements renderable {
 548     public $context;
 549     public $dir;
 550     public $subwiki;
 551     public function __construct($context, $subwiki) {
 552         $fs = get_file_storage();
 553         $this->context = $context;
 554         $this->subwiki = $subwiki;
 555         $this->dir = $fs->get_area_tree($context->id, 'mod_wiki', 'attachments', $subwiki->id);
 556     }
 557 }