mod/wiki/lib.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  * Library of functions and constants for module wiki
  20  *
  21  * It contains the great majority of functions defined by Moodle
  22  * that are mandatory to develop a module.
  23  *
  24  * @package mod-wiki-2.0
  25  * @copyrigth 2009 Marc Alier, Jordi Piguillem marc.alier@upc.edu
  26  * @copyrigth 2009 Universitat Politecnica de Catalunya http://www.upc.edu
  27  *
  28  * @author Jordi Piguillem
  29  * @author Marc Alier
  30  * @author David Jimenez
  31  * @author Josep Arus
  32  * @author Kenneth Riba
  33  *
  34  * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  35  */
  36
  37 /**
  38  * Given an object containing all the necessary data,
  39  * (defined by the form in mod.html) this function
  40  * will create a new instance and return the id number
  41  * of the new instance.
  42  *
  43  * @param object $instance An object from the form in mod.html
  44  * @return int The id of the newly inserted wiki record
  45  **/
  46 function wiki_add_instance($wiki) {
  47     global $DB;
  48
  49     $wiki->timemodified = time();
  50     # May have to add extra stuff in here #
  51     if (empty($wiki->forceformat)) {
  52         $wiki->forceformat = 0;
  53     }
  54     return $DB->insert_record('wiki', $wiki);
  55 }
  56
  57 /**
  58  * Given an object containing all the necessary data,
  59  * (defined by the form in mod.html) this function
  60  * will update an existing instance with new data.
  61  *
  62  * @param object $instance An object from the form in mod.html
  63  * @return boolean Success/Fail
  64  **/
  65 function wiki_update_instance($wiki) {
  66     global $DB;
  67
  68     $wiki->timemodified = time();
  69     $wiki->id = $wiki->instance;
  70     if (empty($wiki->forceformat)) {
  71         $wiki->forceformat = 0;
  72     }
  73
  74     # May have to add extra stuff in here #
  75
  76     return $DB->update_record('wiki', $wiki);
  77 }
  78
  79 /**
  80  * Given an ID of an instance of this module,
  81  * this function will permanently delete the instance
  82  * and any data that depends on it.
  83  *
  84  * @param int $id Id of the module instance
  85  * @return boolean Success/Failure
  86  **/
  87 function wiki_delete_instance($id) {
  88     global $DB;
  89
  90     if (!$wiki = $DB->get_record('wiki', array('id' => $id))) {
  91         return false;
  92     }
  93
  94     $result = true;
  95
  96     # Get subwiki information #
  97     $subwikis = $DB->get_records('wiki_subwikis', array('wikiid' => $wiki->id));
  98
  99     foreach ($subwikis as $subwiki) {
 100         # Get existing links, and delete them #
 101         if (!$DB->delete_records('wiki_links', array('subwikiid' => $subwiki->id), IGNORE_MISSING)) {
 102             $result = false;
 103         }
 104
 105         # Get existing pages #
 106         if ($pages = $DB->get_records('wiki_pages', array('subwikiid' => $subwiki->id))) {
 107             foreach ($pages as $page) {
 108                 # Get locks, and delete them #
 109                 if (!$DB->delete_records('wiki_locks', array('pageid' => $page->id), IGNORE_MISSING)) {
 110                     $result = false;
 111                 }
 112
 113                 # Get versions, and delete them #
 114                 if (!$DB->delete_records('wiki_versions', array('pageid' => $page->id), IGNORE_MISSING)) {
 115                     $result = false;
 116                 }
 117             }
 118
 119             # Delete pages #
 120             if (!$DB->delete_records('wiki_pages', array('subwikiid' => $subwiki->id), IGNORE_MISSING)) {
 121                 $result = false;
 122             }
 123         }
 124
 125         # Get existing synonyms, and delete them #
 126         if (!$DB->delete_records('wiki_synonyms', array('subwikiid' => $subwiki->id), IGNORE_MISSING)) {
 127             $result = false;
 128         }
 129
 130         # Delete any subwikis #
 131         if (!$DB->delete_records('wiki_subwikis', array('id' => $subwiki->id), IGNORE_MISSING)) {
 132             $result = false;
 133         }
 134     }
 135
 136     # Delete any dependent records here #
 137     if (!$DB->delete_records('wiki', array('id' => $wiki->id))) {
 138         $result = false;
 139     }
 140
 141     return $result;
 142 }
 143
 144 function wiki_reset_userdata($data) {
 145     global $CFG,$DB;
 146     require_once($CFG->dirroot . '/mod/wiki/pagelib.php');
 147     require_once($CFG->dirroot . '/tag/lib.php');
 148
 149     $componentstr = get_string('modulenameplural', 'wiki');
 150     $status = array();
 151
 152     //get the wiki(s) in this course.
 153     if (!$wikis = $DB->get_records('wiki', array('course' => $data->courseid))) {
 154         return false;
 155     }
 156     $errors = false;
 157     foreach ($wikis as $wiki) {
 158
 159         // remove all comments
 160         if (!empty($data->reset_wiki_comments)) {
 161             if (!$cm = get_coursemodule_from_instance('wiki', $wiki->id)) {
 162                 continue;
 163             }
 164             $context = context_module::instance($cm->id);
 165             $DB->delete_records_select('comments', "contextid = ? AND commentarea='wiki_page'", array($context->id));
 166             $status[] = array('component'=>$componentstr, 'item'=>get_string('deleteallcomments'), 'error'=>false);
 167         }
 168
 169         if (!empty($data->reset_wiki_tags)) {
 170             # Get subwiki information #
 171             $subwikis = $DB->get_records('wiki_subwikis', array('wikiid' => $wiki->id));
 172
 173             foreach ($subwikis as $subwiki) {
 174                 if ($pages = $DB->get_records('wiki_pages', array('subwikiid' => $subwiki->id))) {
 175                     foreach ($pages as $page) {
 176                         $tags = tag_get_tags_array('wiki_pages', $page->id);
 177                         foreach ($tags as $tagid => $tagname) {
 178                             // Delete the related tag_instances related to the wiki page.
 179                             $errors = tag_delete_instance('wiki_pages', $page->id, $tagid);
 180                             $status[] = array('component' => $componentstr, 'item' => get_string('tagsdeleted', 'wiki'), 'error' => $errors);
 181                         }
 182                     }
 183                 }
 184             }
 185         }
 186     }
 187     return $status;
 188 }
 189
 190
 191 function wiki_reset_course_form_definition(&$mform) {
 192     $mform->addElement('header', 'wikiheader', get_string('modulenameplural', 'wiki'));
 193     $mform->addElement('advcheckbox', 'reset_wiki_tags', get_string('removeallwikitags', 'wiki'));
 194     $mform->addElement('advcheckbox', 'reset_wiki_comments', get_string('deleteallcomments'));
 195 }
 196
 197 /**
 198  * Return a small object with summary information about what a
 199  * user has done with a given particular instance of this module
 200  * Used for user activity reports.
 201  * $return->time = the time they did it
 202  * $return->info = a short text description
 203  *
 204  * @return null
 205  * @todo Finish documenting this function
 206  **/
 207 function wiki_user_outline($course, $user, $mod, $wiki) {
 208     $return = NULL;
 209     return $return;
 210 }
 211
 212 /**
 213  * Print a detailed representation of what a user has done with
 214  * a given particular instance of this module, for user activity reports.
 215  *
 216  * @return boolean
 217  * @todo Finish documenting this function
 218  **/
 219 function wiki_user_complete($course, $user, $mod, $wiki) {
 220     return true;
 221 }
 222
 223 /**
 224  * Indicates API features that the wiki supports.
 225  *
 226  * @uses FEATURE_GROUPS
 227  * @uses FEATURE_GROUPINGS
 228  * @uses FEATURE_GROUPMEMBERSONLY
 229  * @uses FEATURE_MOD_INTRO
 230  * @uses FEATURE_COMPLETION_TRACKS_VIEWS
 231  * @uses FEATURE_COMPLETION_HAS_RULES
 232  * @uses FEATURE_GRADE_HAS_GRADE
 233  * @uses FEATURE_GRADE_OUTCOMES
 234  * @param string $feature
 235  * @return mixed True if yes (some features may use other values)
 236  */
 237 function wiki_supports($feature) {
 238     switch ($feature) {
 239     case FEATURE_GROUPS:
 240         return true;
 241     case FEATURE_GROUPINGS:
 242         return true;
 243     case FEATURE_GROUPMEMBERSONLY:
 244         return true;
 245     case FEATURE_MOD_INTRO:
 246         return true;
 247     case FEATURE_COMPLETION_TRACKS_VIEWS:
 248         return true;
 249     case FEATURE_GRADE_HAS_GRADE:
 250         return false;
 251     case FEATURE_GRADE_OUTCOMES:
 252         return false;
 253     case FEATURE_RATE:
 254         return false;
 255     case FEATURE_BACKUP_MOODLE2:
 256         return true;
 257     case FEATURE_SHOW_DESCRIPTION:
 258         return true;
 259
 260     default:
 261         return null;
 262     }
 263 }
 264
 265 /**
 266  * Given a course and a time, this module should find recent activity
 267  * that has occurred in wiki activities and print it out.
 268  * Return true if there was output, or false is there was none.
 269  *
 270  * @global $CFG
 271  * @global $DB
 272  * @uses CONTEXT_MODULE
 273  * @uses VISIBLEGROUPS
 274  * @param object $course
 275  * @param bool $viewfullnames capability
 276  * @param int $timestart
 277  * @return boolean
 278  **/
 279 function wiki_print_recent_activity($course, $viewfullnames, $timestart) {
 280     global $CFG, $DB, $OUTPUT;
 281
 282     $sql = "SELECT p.id, p.timemodified, p.subwikiid, sw.wikiid, w.wikimode, sw.userid, sw.groupid
 283             FROM {wiki_pages} p
 284                 JOIN {wiki_subwikis} sw ON sw.id = p.subwikiid
 285                 JOIN {wiki} w ON w.id = sw.wikiid
 286             WHERE p.timemodified > ? AND w.course = ?
 287             ORDER BY p.timemodified ASC";
 288     if (!$pages = $DB->get_records_sql($sql, array($timestart, $course->id))) {
 289         return false;
 290     }
 291     require_once($CFG->dirroot . "/mod/wiki/locallib.php");
 292
 293     $wikis = array();
 294
 295     $modinfo = get_fast_modinfo($course);
 296
 297     $subwikivisible = array();
 298     foreach ($pages as $page) {
 299         if (!isset($subwikivisible[$page->subwikiid])) {
 300             $subwiki = (object)array('id' => $page->subwikiid, 'wikiid' => $page->wikiid,
 301                 'groupid' => $page->groupid, 'userid' => $page->userid);
 302             $wiki = (object)array('id' => $page->wikiid, 'course' => $course->id, 'wikimode' => $page->wikimode);
 303             $subwikivisible[$page->subwikiid] = wiki_user_can_view($subwiki, $wiki);
 304         }
 305         if ($subwikivisible[$page->subwikiid]) {
 306             $wikis[] = $page;
 307         }
 308     }
 309     unset($subwikivisible);
 310     unset($pages);
 311
 312     if (!$wikis) {
 313         return false;
 314     }
 315     echo $OUTPUT->heading(get_string("updatedwikipages", 'wiki') . ':', 3);
 316     foreach ($wikis as $wiki) {
 317         $cm = $modinfo->instances['wiki'][$wiki->wikiid];
 318         $link = $CFG->wwwroot . '/mod/wiki/view.php?pageid=' . $wiki->id;
 319         print_recent_activity_note($wiki->timemodified, $wiki, $cm->name, $link, false, $viewfullnames);
 320     }
 321
 322     return true; //  True if anything was printed, otherwise false
 323 }
 324 /**
 325  * Function to be run periodically according to the moodle cron
 326  * This function searches for things that need to be done, such
 327  * as sending out mail, toggling flags etc ...
 328  *
 329  * @uses $CFG
 330  * @return boolean
 331  * @todo Finish documenting this function
 332  **/
 333 function wiki_cron() {
 334     global $CFG;
 335
 336     return true;
 337 }
 338
 339 /**
 340  * Must return an array of grades for a given instance of this module,
 341  * indexed by user.  It also returns a maximum allowed grade.
 342  *
 343  * Example:
 344  *    $return->grades = array of grades;
 345  *    $return->maxgrade = maximum allowed grade;
 346  *
 347  *    return $return;
 348  *
 349  * @param int $wikiid ID of an instance of this module
 350  * @return mixed Null or object with an array of grades and with the maximum grade
 351  **/
 352 function wiki_grades($wikiid) {
 353     return null;
 354 }
 355
 356 /**
 357  * This function returns if a scale is being used by one wiki
 358  * it it has support for grading and scales. Commented code should be
 359  * modified if necessary. See forum, glossary or journal modules
 360  * as reference.
 361  *
 362  * @param int $wikiid ID of an instance of this module
 363  * @return mixed
 364  * @todo Finish documenting this function
 365  **/
 366 function wiki_scale_used($wikiid, $scaleid) {
 367     $return = false;
 368
 369     //$rec = get_record("wiki","id","$wikiid","scale","-$scaleid");
 370     //
 371     //if (!empty($rec)  && !empty($scaleid)) {
 372     //    $return = true;
 373     //}
 374
 375     return $return;
 376 }
 377
 378 /**
 379  * Checks if scale is being used by any instance of wiki.
 380  * This function was added in 1.9
 381  *
 382  * This is used to find out if scale used anywhere
 383  * @param $scaleid int
 384  * @return boolean True if the scale is used by any wiki
 385  */
 386 function wiki_scale_used_anywhere($scaleid) {
 387     global $DB;
 388
 389     //if ($scaleid and $DB->record_exists('wiki', array('grade' => -$scaleid))) {
 390     //    return true;
 391     //} else {
 392     //    return false;
 393     //}
 394
 395     return false;
 396 }
 397
 398 /**
 399  * file serving callback
 400  *
 401  * @copyright Josep Arus
 402  * @package  mod_wiki
 403  * @category files
 404  * @param stdClass $course course object
 405  * @param stdClass $cm course module object
 406  * @param stdClass $context context object
 407  * @param string $filearea file area
 408  * @param array $args extra arguments
 409  * @param bool $forcedownload whether or not force download
 410  * @param array $options additional options affecting the file serving
 411  * @return bool false if the file was not found, just send the file otherwise and do not return anything
 412  */
 413 function wiki_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload, array $options=array()) {
 414     global $CFG;
 415
 416     if ($context->contextlevel != CONTEXT_MODULE) {
 417         return false;
 418     }
 419
 420     require_login($course, true, $cm);
 421
 422     require_once($CFG->dirroot . "/mod/wiki/locallib.php");
 423
 424     if ($filearea == 'attachments') {
 425         $swid = (int) array_shift($args);
 426
 427         if (!$subwiki = wiki_get_subwiki($swid)) {
 428             return false;
 429         }
 430
 431         require_capability('mod/wiki:viewpage', $context);
 432
 433         $relativepath = implode('/', $args);
 434
 435         $fullpath = "/$context->id/mod_wiki/attachments/$swid/$relativepath";
 436
 437         $fs = get_file_storage();
 438         if (!$file = $fs->get_file_by_hash(sha1($fullpath)) or $file->is_directory()) {
 439             return false;
 440         }
 441
 442         send_stored_file($file, null, 0, $options);
 443     }
 444 }
 445
 446 function wiki_search_form($cm, $search = '', $subwiki = null) {
 447     global $CFG, $OUTPUT;
 448
 449     $output = '<div class="wikisearch">';
 450     $output .= '<form method="post" action="' . $CFG->wwwroot . '/mod/wiki/search.php" style="display:inline">';
 451     $output .= '<fieldset class="invisiblefieldset">';
 452     $output .= '<legend class="accesshide">'. get_string('searchwikis', 'wiki') .'</legend>';
 453     $output .= '<label class="accesshide" for="searchwiki">' . get_string("searchterms", "wiki") . '</label>';
 454     $output .= '<input id="searchwiki" name="searchstring" type="text" size="18" value="' . s($search, true) . '" alt="search" />';
 455     $output .= '<input name="courseid" type="hidden" value="' . $cm->course . '" />';
 456     $output .= '<input name="cmid" type="hidden" value="' . $cm->id . '" />';
 457     if (!empty($subwiki->id)) {
 458         $output .= '<input name="subwikiid" type="hidden" value="' . $subwiki->id . '" />';
 459     }
 460     $output .= '<input name="searchwikicontent" type="hidden" value="1" />';
 461     $output .= '<input value="' . get_string('searchwikis', 'wiki') . '" type="submit" />';
 462     $output .= '</fieldset>';
 463     $output .= '</form>';
 464     $output .= '</div>';
 465
 466     return $output;
 467 }
 468 function wiki_extend_navigation(navigation_node $navref, $course, $module, $cm) {
 469     global $CFG, $PAGE, $USER;
 470
 471     require_once($CFG->dirroot . '/mod/wiki/locallib.php');
 472
 473     $context = context_module::instance($cm->id);
 474     $url = $PAGE->url;
 475     $userid = 0;
 476     if ($module->wikimode == 'individual') {
 477         $userid = $USER->id;
 478     }
 479
 480     if (!$wiki = wiki_get_wiki($cm->instance)) {
 481         return false;
 482     }
 483
 484     if (!$gid = groups_get_activity_group($cm)) {
 485         $gid = 0;
 486     }
 487     if (!$subwiki = wiki_get_subwiki_by_group($cm->instance, $gid, $userid)) {
 488         return null;
 489     } else {
 490         $swid = $subwiki->id;
 491     }
 492
 493     $pageid = $url->param('pageid');
 494     $cmid = $url->param('id');
 495     if (empty($pageid) && !empty($cmid)) {
 496         // wiki main page
 497         $page = wiki_get_page_by_title($swid, $wiki->firstpagetitle);
 498         $pageid = $page->id;
 499     }
 500
 501     if (has_capability('mod/wiki:createpage', $context)) {
 502         $link = new moodle_url('/mod/wiki/create.php', array('action' => 'new', 'swid' => $swid));
 503         $node = $navref->add(get_string('newpage', 'wiki'), $link, navigation_node::TYPE_SETTING);
 504     }
 505
 506     if (is_numeric($pageid)) {
 507
 508         if (has_capability('mod/wiki:viewpage', $context)) {
 509             $link = new moodle_url('/mod/wiki/view.php', array('pageid' => $pageid));
 510             $node = $navref->add(get_string('view', 'wiki'), $link, navigation_node::TYPE_SETTING);
 511         }
 512
 513         if (wiki_user_can_edit($subwiki)) {
 514             $link = new moodle_url('/mod/wiki/edit.php', array('pageid' => $pageid));
 515             $node = $navref->add(get_string('edit', 'wiki'), $link, navigation_node::TYPE_SETTING);
 516         }
 517
 518         if (has_capability('mod/wiki:viewcomment', $context)) {
 519             $link = new moodle_url('/mod/wiki/comments.php', array('pageid' => $pageid));
 520             $node = $navref->add(get_string('comments', 'wiki'), $link, navigation_node::TYPE_SETTING);
 521         }
 522
 523         if (has_capability('mod/wiki:viewpage', $context)) {
 524             $link = new moodle_url('/mod/wiki/history.php', array('pageid' => $pageid));
 525             $node = $navref->add(get_string('history', 'wiki'), $link, navigation_node::TYPE_SETTING);
 526         }
 527
 528         if (has_capability('mod/wiki:viewpage', $context)) {
 529             $link = new moodle_url('/mod/wiki/map.php', array('pageid' => $pageid));
 530             $node = $navref->add(get_string('map', 'wiki'), $link, navigation_node::TYPE_SETTING);
 531         }
 532
 533         if (has_capability('mod/wiki:viewpage', $context)) {
 534             $link = new moodle_url('/mod/wiki/files.php', array('pageid' => $pageid));
 535             $node = $navref->add(get_string('files', 'wiki'), $link, navigation_node::TYPE_SETTING);
 536         }
 537
 538         if (has_capability('mod/wiki:managewiki', $context)) {
 539             $link = new moodle_url('/mod/wiki/admin.php', array('pageid' => $pageid));
 540             $node = $navref->add(get_string('admin', 'wiki'), $link, navigation_node::TYPE_SETTING);
 541         }
 542     }
 543 }
 544 /**
 545  * Returns all other caps used in wiki module
 546  *
 547  * @return array
 548  */
 549 function wiki_get_extra_capabilities() {
 550     return array('moodle/comment:view', 'moodle/comment:post', 'moodle/comment:delete');
 551 }
 552
 553 /**
 554  * Running addtional permission check on plugin, for example, plugins
 555  * may have switch to turn on/off comments option, this callback will
 556  * affect UI display, not like pluginname_comment_validate only throw
 557  * exceptions.
 558  * Capability check has been done in comment->check_permissions(), we
 559  * don't need to do it again here.
 560  *
 561  * @package  mod_wiki
 562  * @category comment
 563  *
 564  * @param stdClass $comment_param {
 565  *              context  => context the context object
 566  *              courseid => int course id
 567  *              cm       => stdClass course module object
 568  *              commentarea => string comment area
 569  *              itemid      => int itemid
 570  * }
 571  * @return array
 572  */
 573 function wiki_comment_permissions($comment_param) {
 574     return array('post'=>true, 'view'=>true);
 575 }
 576
 577 /**
 578  * Validate comment parameter before perform other comments actions
 579  *
 580  * @param stdClass $comment_param {
 581  *              context  => context the context object
 582  *              courseid => int course id
 583  *              cm       => stdClass course module object
 584  *              commentarea => string comment area
 585  *              itemid      => int itemid
 586  * }
 587  *
 588  * @package  mod_wiki
 589  * @category comment
 590  *
 591  * @return boolean
 592  */
 593 function wiki_comment_validate($comment_param) {
 594     global $DB, $CFG;
 595     require_once($CFG->dirroot . '/mod/wiki/locallib.php');
 596     // validate comment area
 597     if ($comment_param->commentarea != 'wiki_page') {
 598         throw new comment_exception('invalidcommentarea');
 599     }
 600     // validate itemid
 601     if (!$record = $DB->get_record('wiki_pages', array('id'=>$comment_param->itemid))) {
 602         throw new comment_exception('invalidcommentitemid');
 603     }
 604     if (!$subwiki = wiki_get_subwiki($record->subwikiid)) {
 605         throw new comment_exception('invalidsubwikiid');
 606     }
 607     if (!$wiki = wiki_get_wiki_from_pageid($comment_param->itemid)) {
 608         throw new comment_exception('invalidid', 'data');
 609     }
 610     if (!$course = $DB->get_record('course', array('id'=>$wiki->course))) {
 611         throw new comment_exception('coursemisconf');
 612     }
 613     if (!$cm = get_coursemodule_from_instance('wiki', $wiki->id, $course->id)) {
 614         throw new comment_exception('invalidcoursemodule');
 615     }
 616     $context = context_module::instance($cm->id);
 617     // group access
 618     if ($subwiki->groupid) {
 619         $groupmode = groups_get_activity_groupmode($cm, $course);
 620         if ($groupmode == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $context)) {
 621             if (!groups_is_member($subwiki->groupid)) {
 622                 throw new comment_exception('notmemberofgroup');
 623             }
 624         }
 625     }
 626     // validate context id
 627     if ($context->id != $comment_param->context->id) {
 628         throw new comment_exception('invalidcontext');
 629     }
 630     // validation for comment deletion
 631     if (!empty($comment_param->commentid)) {
 632         if ($comment = $DB->get_record('comments', array('id'=>$comment_param->commentid))) {
 633             if ($comment->commentarea != 'wiki_page') {
 634                 throw new comment_exception('invalidcommentarea');
 635             }
 636             if ($comment->contextid != $context->id) {
 637                 throw new comment_exception('invalidcontext');
 638             }
 639             if ($comment->itemid != $comment_param->itemid) {
 640                 throw new comment_exception('invalidcommentitemid');
 641             }
 642         } else {
 643             throw new comment_exception('invalidcommentid');
 644         }
 645     }
 646     return true;
 647 }
 648
 649 /**
 650  * Return a list of page types
 651  * @param string $pagetype current page type
 652  * @param stdClass $parentcontext Block's parent context
 653  * @param stdClass $currentcontext Current context of block
 654  */
 655 function wiki_page_type_list($pagetype, $parentcontext, $currentcontext) {
 656     $module_pagetype = array(
 657         'mod-wiki-*'=>get_string('page-mod-wiki-x', 'wiki'),
 658         'mod-wiki-view'=>get_string('page-mod-wiki-view', 'wiki'),
 659         'mod-wiki-comments'=>get_string('page-mod-wiki-comments', 'wiki'),
 660         'mod-wiki-history'=>get_string('page-mod-wiki-history', 'wiki'),
 661         'mod-wiki-map'=>get_string('page-mod-wiki-map', 'wiki')
 662     );
 663     return $module_pagetype;
 664 }