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         return $this->output->box(format_module_intro('wiki',
 239                 $this->page->activityrecord, $this->page->cm->id), 'generalbox', 'intro');
 240     }
 241
 242     public function tabs($page, $tabitems, $options) {
 243         $tabs = array();
 244         $context = context_module::instance($this->page->cm->id);
 245
 246         $pageid = null;
 247         if (!empty($page)) {
 248             $pageid = $page->id;
 249         }
 250
 251         $selected = $options['activetab'];
 252
 253         // make specific tab linked even it is active
 254         if (!empty($options['linkedwhenactive'])) {
 255             $linked = $options['linkedwhenactive'];
 256         } else {
 257             $linked = '';
 258         }
 259
 260         if (!empty($options['inactivetabs'])) {
 261             $inactive = $options['inactivetabs'];
 262         } else {
 263             $inactive = array();
 264         }
 265
 266         foreach ($tabitems as $tab) {
 267             if ($tab == 'edit' && !has_capability('mod/wiki:editpage', $context)) {
 268                 continue;
 269             }
 270             if ($tab == 'comments' && !has_capability('mod/wiki:viewcomment', $context)) {
 271                 continue;
 272             }
 273             if ($tab == 'files' && !has_capability('mod/wiki:viewpage', $context)) {
 274                 continue;
 275             }
 276             if (($tab == 'view' || $tab == 'map' || $tab == 'history') && !has_capability('mod/wiki:viewpage', $context)) {
 277                 continue;
 278             }
 279             if ($tab == 'admin' && !has_capability('mod/wiki:managewiki', $context)) {
 280                 continue;
 281             }
 282             $link = new moodle_url('/mod/wiki/'. $tab. '.php', array('pageid' => $pageid));
 283             if ($linked == $tab) {
 284                 $tabs[] = new tabobject($tab, $link, get_string($tab, 'wiki'), '', true);
 285             } else {
 286                 $tabs[] = new tabobject($tab, $link, get_string($tab, 'wiki'));
 287             }
 288         }
 289
 290         return $this->tabtree($tabs, $selected, $inactive);
 291     }
 292
 293     public function prettyview_link($page) {
 294         $html = '';
 295         $link = new moodle_url('/mod/wiki/prettyview.php', array('pageid' => $page->id));
 296         $html .= $this->output->container_start('wiki_right');
 297         $html .= $this->output->action_link($link, get_string('prettyprint', 'wiki'), new popup_action('click', $link), array('class' => 'printicon'));
 298         $html .= $this->output->container_end();
 299         return $html;
 300     }
 301
 302     public function wiki_print_subwiki_selector($wiki, $subwiki, $page, $pagetype = 'view') {
 303         global $CFG, $USER;
 304         require_once($CFG->dirroot . '/user/lib.php');
 305         $cm = get_coursemodule_from_instance('wiki', $wiki->id);
 306
 307         switch ($pagetype) {
 308         case 'files':
 309             $baseurl = new moodle_url('/mod/wiki/files.php',
 310                     array('wid' => $wiki->id, 'title' => $page->title, 'pageid' => $page->id));
 311             break;
 312         case 'search':
 313             $search = optional_param('searchstring', null, PARAM_TEXT);
 314             $searchcontent = optional_param('searchwikicontent', 0, PARAM_INT);
 315             $baseurl = new moodle_url('/mod/wiki/search.php',
 316                     array('cmid' => $cm->id, 'courseid' => $cm->course,
 317                         'searchstring' => $search, 'searchwikicontent' => $searchcontent));
 318             break;
 319         case 'view':
 320         default:
 321             $baseurl = new moodle_url('/mod/wiki/view.php',
 322                     array('wid' => $wiki->id, 'title' => $page->title));
 323             break;
 324         }
 325
 326         $context = context_module::instance($cm->id);
 327         // @TODO: A plenty of duplicated code below this lines.
 328         // Create private functions.
 329         switch (groups_get_activity_groupmode($cm)) {
 330         case NOGROUPS:
 331             if ($wiki->wikimode == 'collaborative') {
 332                 // No need to print anything
 333                 return;
 334             } else if ($wiki->wikimode == 'individual') {
 335                 // We have private wikis here
 336
 337                 $view = has_capability('mod/wiki:viewpage', $context);
 338                 $manage = has_capability('mod/wiki:managewiki', $context);
 339
 340                 // Only people with these capabilities can view all wikis
 341                 if ($view && $manage) {
 342                     // @TODO: Print here a combo that contains all users.
 343                     $users = get_enrolled_users($context);
 344                     $options = array();
 345                     foreach ($users as $user) {
 346                         $options[$user->id] = fullname($user);
 347                     }
 348
 349                     echo $this->output->container_start('wiki_right');
 350                     $name = 'uid';
 351                     $selected = $subwiki->userid;
 352                     echo $this->output->single_select($baseurl, $name, $options, $selected, null, null,
 353                         array('label' => get_string('user') . ':'));
 354                     echo $this->output->container_end();
 355                 }
 356                 return;
 357             } else {
 358                 // error
 359                 return;
 360             }
 361         case SEPARATEGROUPS:
 362             if ($wiki->wikimode == 'collaborative') {
 363                 // We need to print a select to choose a course group
 364
 365                 echo $this->output->container_start('wiki_right');
 366                 groups_print_activity_menu($cm, $baseurl);
 367                 echo $this->output->container_end();
 368                 return;
 369             } else if ($wiki->wikimode == 'individual') {
 370                 //  @TODO: Print here a combo that contains all users of that subwiki.
 371                 $view = has_capability('mod/wiki:viewpage', $context);
 372                 $manage = has_capability('mod/wiki:managewiki', $context);
 373
 374                 // Only people with these capabilities can view all wikis
 375                 if ($view && $manage) {
 376                     $users = get_enrolled_users($context);
 377                     $options = array();
 378                     foreach ($users as $user) {
 379                         $groups = groups_get_all_groups($cm->course, $user->id);
 380                         if (!empty($groups)) {
 381                             foreach ($groups as $group) {
 382                                 $options[$group->id][$group->name][$group->id . '-' . $user->id] = fullname($user);
 383                             }
 384                         } else {
 385                             $name = get_string('notingroup', 'wiki');
 386                             $options[0][$name]['0' . '-' . $user->id] = fullname($user);
 387                         }
 388                     }
 389                 } else {
 390                     $group = groups_get_group($subwiki->groupid);
 391                     if (!$group) {
 392                         return;
 393                     }
 394                     $users = groups_get_members($subwiki->groupid);
 395                     foreach ($users as $user) {
 396                         $options[$group->id][$group->name][$group->id . '-' . $user->id] = fullname($user);
 397                     }
 398                 }
 399                 echo $this->output->container_start('wiki_right');
 400                 $name = 'groupanduser';
 401                 $selected = $subwiki->groupid . '-' . $subwiki->userid;
 402                 echo $this->output->single_select($baseurl, $name, $options, $selected, null, null,
 403                     array('label' => get_string('user') . ':'));
 404                 echo $this->output->container_end();
 405
 406                 return;
 407
 408             } else {
 409                 // error
 410                 return;
 411             }
 412         CASE VISIBLEGROUPS:
 413             if ($wiki->wikimode == 'collaborative') {
 414                 // We need to print a select to choose a course group
 415                 // moodle_url will take care of encoding for us
 416
 417                 echo $this->output->container_start('wiki_right');
 418                 groups_print_activity_menu($cm, $baseurl);
 419                 echo $this->output->container_end();
 420                 return;
 421
 422             } else if ($wiki->wikimode == 'individual') {
 423                 $users = get_enrolled_users($context);
 424                 $options = array();
 425                 foreach ($users as $user) {
 426                     $groups = groups_get_all_groups($cm->course, $user->id);
 427                     if (!empty($groups)) {
 428                         foreach ($groups as $group) {
 429                             $options[$group->id][$group->name][$group->id . '-' . $user->id] = fullname($user);
 430                         }
 431                     } else {
 432                         $name = get_string('notingroup', 'wiki');
 433                         $options[0][$name]['0' . '-' . $user->id] = fullname($user);
 434                     }
 435                 }
 436
 437                 echo $this->output->container_start('wiki_right');
 438                 $name = 'groupanduser';
 439                 $selected = $subwiki->groupid . '-' . $subwiki->userid;
 440                 echo $this->output->single_select($baseurl, $name, $options, $selected, null, null,
 441                     array('label' => get_string('user') . ':'));
 442                 echo $this->output->container_end();
 443
 444                 return;
 445
 446             } else {
 447                 // error
 448                 return;
 449             }
 450         default:
 451             // error
 452             return;
 453
 454         }
 455
 456     }
 457
 458     function menu_map($pageid, $currentselect) {
 459         if (empty($currentselect)) {
 460             // The wiki uses digit number to match the options and 5 is the default one.
 461             $currentselect = 5;
 462         }
 463         $options = array('contributions', 'links', 'orphaned', 'pageindex', 'pagelist', 'updatedpages');
 464         $items = array();
 465         foreach ($options as $opt) {
 466             $items[] = get_string($opt, 'wiki');
 467         }
 468         $selectoptions = array();
 469         foreach ($items as $key => $item) {
 470             $selectoptions[$key + 1] = $item;
 471         }
 472         $select = new single_select(new moodle_url('/mod/wiki/map.php', array('pageid' => $pageid)), 'option', $selectoptions, $currentselect, null);
 473         $select->label = get_string('mapmenu', 'wiki') . ': ';
 474         return $this->output->container($this->output->render($select), 'midpad');
 475     }
 476     public function wiki_files_tree($context, $subwiki) {
 477         return $this->render(new wiki_files_tree($context, $subwiki));
 478     }
 479     public function render_wiki_files_tree(wiki_files_tree $tree) {
 480         if (empty($tree->dir['subdirs']) && empty($tree->dir['files'])) {
 481             $html = $this->output->box(get_string('nofilesavailable', 'repository'));
 482         } else {
 483             $htmlid = 'wiki_files_tree_'.uniqid();
 484             $module = array('name'=>'mod_wiki', 'fullpath'=>'/mod/wiki/module.js');
 485             $this->page->requires->js_init_call('M.mod_wiki.init_tree', array(false, $htmlid), false, $module);
 486             $html = '<div id="'.$htmlid.'">';
 487             $html .= $this->htmllize_tree($tree, $tree->dir);
 488             $html .= '</div>';
 489         }
 490         return $html;
 491     }
 492
 493     function menu_admin($pageid, $currentselect) {
 494         $options = array('removepages', 'deleteversions');
 495         $items = array();
 496         foreach ($options as $opt) {
 497             $items[] = get_string($opt, 'wiki');
 498         }
 499         $selectoptions = array();
 500         foreach ($items as $key => $item) {
 501             $selectoptions[$key + 1] = $item;
 502         }
 503         $select = new single_select(new moodle_url('/mod/wiki/admin.php', array('pageid' => $pageid)), 'option', $selectoptions, $currentselect, null);
 504         $select->label = get_string('adminmenu', 'wiki') . ': ';
 505         return $this->output->container($this->output->render($select), 'midpad');
 506     }
 507
 508     /**
 509      * Internal function - creates htmls structure suitable for YUI tree.
 510      */
 511     protected function htmllize_tree($tree, $dir) {
 512         global $CFG;
 513         $yuiconfig = array();
 514         $yuiconfig['type'] = 'html';
 515
 516         if (empty($dir['subdirs']) and empty($dir['files'])) {
 517             return '';
 518         }
 519         $result = '<ul>';
 520         foreach ($dir['subdirs'] as $subdir) {
 521             $image = $this->output->pix_icon(file_folder_icon(), $subdir['dirname'], 'moodle', array('class'=>'icon'));
 522             $result .= '<li yuiConfig=\''.json_encode($yuiconfig).'\'><div>'.$image.' '.s($subdir['dirname']).'</div> '.$this->htmllize_tree($tree, $subdir).'</li>';
 523         }
 524         foreach ($dir['files'] as $file) {
 525             $url = file_encode_url("$CFG->wwwroot/pluginfile.php", '/'.$tree->context->id.'/mod_wiki/attachments/' . $tree->subwiki->id . '/'. $file->get_filepath() . $file->get_filename(), true);
 526             $filename = $file->get_filename();
 527             $image = $this->output->pix_icon(file_file_icon($file), $filename, 'moodle', array('class'=>'icon'));
 528             $result .= '<li yuiConfig=\''.json_encode($yuiconfig).'\'><div>'.$image.' '.html_writer::link($url, $filename).'</div></li>';
 529         }
 530         $result .= '</ul>';
 531
 532         return $result;
 533     }
 534 }
 535
 536 class wiki_files_tree implements renderable {
 537     public $context;
 538     public $dir;
 539     public $subwiki;
 540     public function __construct($context, $subwiki) {
 541         $fs = get_file_storage();
 542         $this->context = $context;
 543         $this->subwiki = $subwiki;
 544         $this->dir = $fs->get_area_tree($context->id, 'mod_wiki', 'attachments', $subwiki->id);
 545     }
 546 }