mod/glossary/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 glossary
  20  * (replace glossary with the name of your module and delete this line)
  21  *
  22  * @package   mod-glossary
  23  * @copyright 1999 onwards Martin Dougiamas  {@link http://moodle.com}
  24  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  25  */
  26 require_once($CFG->libdir . '/completionlib.php');
  27
  28 define("GLOSSARY_SHOW_ALL_CATEGORIES", 0);
  29 define("GLOSSARY_SHOW_NOT_CATEGORISED", -1);
  30
  31 define("GLOSSARY_NO_VIEW", -1);
  32 define("GLOSSARY_STANDARD_VIEW", 0);
  33 define("GLOSSARY_CATEGORY_VIEW", 1);
  34 define("GLOSSARY_DATE_VIEW", 2);
  35 define("GLOSSARY_AUTHOR_VIEW", 3);
  36 define("GLOSSARY_ADDENTRY_VIEW", 4);
  37 define("GLOSSARY_IMPORT_VIEW", 5);
  38 define("GLOSSARY_EXPORT_VIEW", 6);
  39 define("GLOSSARY_APPROVAL_VIEW", 7);
  40
  41 /// STANDARD FUNCTIONS ///////////////////////////////////////////////////////////
  42 /**
  43  * @global object
  44  * @param object $glossary
  45  * @return int
  46  */
  47 function glossary_add_instance($glossary) {
  48     global $DB;
  49 /// Given an object containing all the necessary data,
  50 /// (defined by the form in mod_form.php) this function
  51 /// will create a new instance and return the id number
  52 /// of the new instance.
  53
  54     if (empty($glossary->ratingtime) or empty($glossary->assessed)) {
  55         $glossary->assesstimestart  = 0;
  56         $glossary->assesstimefinish = 0;
  57     }
  58
  59     if (empty($glossary->globalglossary) ) {
  60         $glossary->globalglossary = 0;
  61     }
  62
  63     if (!has_capability('mod/glossary:manageentries', get_context_instance(CONTEXT_SYSTEM))) {
  64         $glossary->globalglossary = 0;
  65     }
  66
  67     $glossary->timecreated  = time();
  68     $glossary->timemodified = $glossary->timecreated;
  69
  70     //Check displayformat is a valid one
  71     $formats = get_list_of_plugins('mod/glossary/formats','TEMPLATE');
  72     if (!in_array($glossary->displayformat, $formats)) {
  73         print_error('unknowformat', '', '', $glossary->displayformat);
  74     }
  75
  76     $returnid = $DB->insert_record("glossary", $glossary);
  77     $glossary->id = $returnid;
  78     glossary_grade_item_update($glossary);
  79
  80     return $returnid;
  81 }
  82
  83 /**
  84  * Given an object containing all the necessary data,
  85  * (defined by the form in mod_form.php) this function
  86  * will update an existing instance with new data.
  87  *
  88  * @global object
  89  * @global object
  90  * @param object $glossary
  91  * @return bool
  92  */
  93 function glossary_update_instance($glossary) {
  94     global $CFG, $DB;
  95
  96     if (empty($glossary->globalglossary)) {
  97         $glossary->globalglossary = 0;
  98     }
  99
 100     if (!has_capability('mod/glossary:manageentries', get_context_instance(CONTEXT_SYSTEM))) {
 101         // keep previous
 102         unset($glossary->globalglossary);
 103     }
 104
 105     $glossary->timemodified = time();
 106     $glossary->id           = $glossary->instance;
 107
 108     if (empty($glossary->ratingtime) or empty($glossary->assessed)) {
 109         $glossary->assesstimestart  = 0;
 110         $glossary->assesstimefinish = 0;
 111     }
 112
 113     //Check displayformat is a valid one
 114     $formats = get_list_of_plugins('mod/glossary/formats','TEMPLATE');
 115     if (!in_array($glossary->displayformat, $formats)) {
 116         print_error('unknowformat', '', '', $glossary->displayformat);
 117     }
 118
 119     $DB->update_record("glossary", $glossary);
 120     if ($glossary->defaultapproval) {
 121         $DB->execute("UPDATE {glossary_entries} SET approved = 1 where approved <> 1 and glossaryid = ?", array($glossary->id));
 122     }
 123     glossary_grade_item_update($glossary);
 124
 125     return true;
 126 }
 127
 128 /**
 129  * Given an ID of an instance of this module,
 130  * this function will permanently delete the instance
 131  * and any data that depends on it.
 132  *
 133  * @global object
 134  * @param int $id glossary id
 135  * @return bool success
 136  */
 137 function glossary_delete_instance($id) {
 138     global $DB, $CFG;
 139
 140     if (!$glossary = $DB->get_record('glossary', array('id'=>$id))) {
 141         return false;
 142     }
 143
 144     if (!$cm = get_coursemodule_from_instance('glossary', $id)) {
 145         return false;
 146     }
 147
 148     if (!$context = get_context_instance(CONTEXT_MODULE, $cm->id)) {
 149         return false;
 150     }
 151
 152     $fs = get_file_storage();
 153
 154     if ($glossary->mainglossary) {
 155         // unexport entries
 156         $sql = "SELECT ge.id, ge.sourceglossaryid, cm.id AS sourcecmid
 157                   FROM {glossary_entries} ge
 158                   JOIN {modules} m ON m.name = 'glossary'
 159                   JOIN {course_modules} cm ON (cm.module = m.id AND cm.instance = ge.sourceglossaryid)
 160                  WHERE ge.glossaryid = ? AND ge.sourceglossaryid > 0";
 161
 162         if ($exported = $DB->get_records_sql($sql, array($id))) {
 163             foreach ($exported as $entry) {
 164                 $entry->glossaryid = $entry->sourceglossaryid;
 165                 $entry->sourceglossaryid = 0;
 166                 $newcontext = get_context_instance(CONTEXT_MODULE, $entry->sourcecmid);
 167                 if ($oldfiles = $fs->get_area_files($context->id, 'mod_glossary', 'attachment', $entry->id)) {
 168                     foreach ($oldfiles as $oldfile) {
 169                         $file_record = new stdClass();
 170                         $file_record->contextid = $newcontext->id;
 171                         $fs->create_file_from_storedfile($file_record, $oldfile);
 172                     }
 173                     $fs->delete_area_files($context->id, 'mod_glossary', 'attachment', $entry->id);
 174                     $entry->attachment = '1';
 175                 } else {
 176                     $entry->attachment = '0';
 177                 }
 178                 $DB->update_record('glossary_entries', $entry);
 179             }
 180         }
 181     } else {
 182         // move exported entries to main glossary
 183         $sql = "UPDATE {glossary_entries}
 184                    SET sourceglossaryid = 0
 185                  WHERE sourceglossaryid = ?";
 186         $DB->execute($sql, array($id));
 187     }
 188
 189     // Delete any dependent records
 190     $entry_select = "SELECT id FROM {glossary_entries} WHERE glossaryid = ?";
 191     $DB->delete_records_select('comments', "contextid=? AND commentarea=? AND itemid IN ($entry_select)", array($id, 'glossary_entry', $context->id));
 192     $DB->delete_records_select('glossary_alias',    "entryid IN ($entry_select)", array($id));
 193
 194     $category_select = "SELECT id FROM {glossary_categories} WHERE glossaryid = ?";
 195     $DB->delete_records_select('glossary_entries_categories', "categoryid IN ($category_select)", array($id));
 196     $DB->delete_records('glossary_categories', array('glossaryid'=>$id));
 197     $DB->delete_records('glossary_entries', array('glossaryid'=>$id));
 198
 199     // delete all files
 200     $fs->delete_area_files($context->id);
 201
 202     glossary_grade_item_delete($glossary);
 203
 204     return $DB->delete_records('glossary', array('id'=>$id));
 205 }
 206
 207 /**
 208  * Return a small object with summary information about what a
 209  * user has done with a given particular instance of this module
 210  * Used for user activity reports.
 211  * $return->time = the time they did it
 212  * $return->info = a short text description
 213  *
 214  * @param object $course
 215  * @param object $user
 216  * @param object $mod
 217  * @param object $glossary
 218  * @return object|null
 219  */
 220 function glossary_user_outline($course, $user, $mod, $glossary) {
 221     global $CFG;
 222
 223     require_once("$CFG->libdir/gradelib.php");
 224     $grades = grade_get_grades($course->id, 'mod', 'glossary', $glossary->id, $user->id);
 225     if (empty($grades->items[0]->grades)) {
 226         $grade = false;
 227     } else {
 228         $grade = reset($grades->items[0]->grades);
 229     }
 230
 231     if ($entries = glossary_get_user_entries($glossary->id, $user->id)) {
 232         $result = new stdClass();
 233         $result->info = count($entries) . ' ' . get_string("entries", "glossary");
 234
 235         $lastentry = array_pop($entries);
 236         $result->time = $lastentry->timemodified;
 237
 238         if ($grade) {
 239             $result->info .= ', ' . get_string('grade') . ': ' . $grade->str_long_grade;
 240         }
 241         return $result;
 242     } else if ($grade) {
 243         $result = new stdClass();
 244         $result->info = get_string('grade') . ': ' . $grade->str_long_grade;
 245
 246         //datesubmitted == time created. dategraded == time modified or time overridden
 247         //if grade was last modified by the user themselves use date graded. Otherwise use date submitted
 248         //TODO: move this copied & pasted code somewhere in the grades API. See MDL-26704
 249         if ($grade->usermodified == $user->id || empty($grade->datesubmitted)) {
 250             $result->time = $grade->dategraded;
 251         } else {
 252             $result->time = $grade->datesubmitted;
 253         }
 254
 255         return $result;
 256     }
 257     return NULL;
 258 }
 259
 260 /**
 261  * @global object
 262  * @param int $glossaryid
 263  * @param int $userid
 264  * @return array
 265  */
 266 function glossary_get_user_entries($glossaryid, $userid) {
 267 /// Get all the entries for a user in a glossary
 268     global $DB;
 269
 270     return $DB->get_records_sql("SELECT e.*, u.firstname, u.lastname, u.email, u.picture
 271                                    FROM {glossary} g, {glossary_entries} e, {user} u
 272                              WHERE g.id = ?
 273                                AND e.glossaryid = g.id
 274                                AND e.userid = ?
 275                                AND e.userid = u.id
 276                           ORDER BY e.timemodified ASC", array($glossaryid, $userid));
 277 }
 278
 279 /**
 280  * Print a detailed representation of what a  user has done with
 281  * a given particular instance of this module, for user activity reports.
 282  *
 283  * @global object
 284  * @param object $course
 285  * @param object $user
 286  * @param object $mod
 287  * @param object $glossary
 288  */
 289 function glossary_user_complete($course, $user, $mod, $glossary) {
 290     global $CFG, $OUTPUT;
 291     require_once("$CFG->libdir/gradelib.php");
 292
 293     $grades = grade_get_grades($course->id, 'mod', 'glossary', $glossary->id, $user->id);
 294     if (!empty($grades->items[0]->grades)) {
 295         $grade = reset($grades->items[0]->grades);
 296         echo $OUTPUT->container(get_string('grade').': '.$grade->str_long_grade);
 297         if ($grade->str_feedback) {
 298             echo $OUTPUT->container(get_string('feedback').': '.$grade->str_feedback);
 299         }
 300     }
 301
 302     if ($entries = glossary_get_user_entries($glossary->id, $user->id)) {
 303         echo '<table width="95%" border="0"><tr><td>';
 304         foreach ($entries as $entry) {
 305             $cm = get_coursemodule_from_instance("glossary", $glossary->id, $course->id);
 306             glossary_print_entry($course, $cm, $glossary, $entry,"","",0);
 307             echo '<p>';
 308         }
 309         echo '</td></tr></table>';
 310     }
 311 }
 312 /**
 313  * Given a course and a time, this module should find recent activity
 314  * that has occurred in glossary activities and print it out.
 315  * Return true if there was output, or false is there was none.
 316  *
 317  * @global object
 318  * @global object
 319  * @global object
 320  * @param object $course
 321  * @param object $viewfullnames
 322  * @param int $timestart
 323  * @return bool
 324  */
 325 function glossary_print_recent_activity($course, $viewfullnames, $timestart) {
 326     global $CFG, $USER, $DB, $OUTPUT;
 327
 328     //TODO: use timestamp in approved field instead of changing timemodified when approving in 2.0
 329     if (!defined('GLOSSARY_RECENT_ACTIVITY_LIMIT')) {
 330         define('GLOSSARY_RECENT_ACTIVITY_LIMIT', 50);
 331     }
 332
 333     $modinfo = get_fast_modinfo($course);
 334     $ids = array();
 335
 336     foreach ($modinfo->cms as $cm) {
 337         if ($cm->modname != 'glossary') {
 338             continue;
 339         }
 340         if (!$cm->uservisible) {
 341             continue;
 342         }
 343         $ids[$cm->instance] = $cm->id;
 344     }
 345
 346     if (!$ids) {
 347         return false;
 348     }
 349
 350     // generate list of approval capabilities for all glossaries in the course.
 351     $approvals = array();
 352     foreach ($ids as $glinstanceid => $glcmid) {
 353         $context = get_context_instance(CONTEXT_MODULE, $glcmid);
 354         // get records glossary entries that are approved if user has no capability to approve entries.
 355         if (has_capability('mod/glossary:approve', $context)) {
 356             $approvals[] = ' ge.glossaryid = :glsid'.$glinstanceid.' ';
 357         } else {
 358             $approvals[] = ' (ge.approved = 1 AND ge.glossaryid = :glsid'.$glinstanceid.') ';
 359         }
 360         $params['glsid'.$glinstanceid] = $glinstanceid;
 361     }
 362
 363     $selectsql = 'SELECT ge.id, ge.concept, ge.approved, ge.timemodified, ge.glossaryid,
 364                                         '.user_picture::fields('u',null,'userid');
 365     $countsql = 'SELECT COUNT(*)';
 366
 367     $joins = array(' FROM {glossary_entries} ge ');
 368     $joins[] = 'JOIN {user} u ON u.id = ge.userid ';
 369     $fromsql = implode($joins, "\n");
 370
 371     $params['timestart'] = $timestart;
 372     $clausesql = ' WHERE ge.timemodified > :timestart AND (';
 373     $approvalsql = implode($approvals, ' OR ');
 374
 375     $ordersql = ') ORDER BY ge.timemodified ASC';
 376
 377     $entries = $DB->get_records_sql($selectsql.$fromsql.$clausesql.$approvalsql.$ordersql, $params, 0, (GLOSSARY_RECENT_ACTIVITY_LIMIT+1));
 378
 379     if (empty($entries)) {
 380         return false;
 381     }
 382
 383     echo $OUTPUT->heading(get_string('newentries', 'glossary').':');
 384
 385     $strftimerecent = get_string('strftimerecent');
 386     $entrycount = 0;
 387     foreach ($entries as $entry) {
 388         if ($entrycount < GLOSSARY_RECENT_ACTIVITY_LIMIT) {
 389             if ($entry->approved) {
 390                 $dimmed = '';
 391                 $urlparams = array('g' => $entry->glossaryid, 'mode' => 'entry', 'hook' => $entry->id);
 392             } else {
 393                 $dimmed = ' dimmed_text';
 394                 $urlparams = array('id' => $ids[$entry->glossaryid], 'mode' => 'approval', 'hook' => format_text($entry->concept, true));
 395             }
 396             $link = new moodle_url($CFG->wwwroot.'/mod/glossary/view.php' , $urlparams);
 397             echo '<div class="head'.$dimmed.'">';
 398             echo '<div class="date">'.userdate($entry->timemodified, $strftimerecent).'</div>';
 399             echo '<div class="name">'.fullname($entry, $viewfullnames).'</div>';
 400             echo '</div>';
 401             echo '<div class="info"><a href="'.$link.'">'.format_text($entry->concept, true).'</a></div>';
 402             $entrycount += 1;
 403         } else {
 404             $numnewentries = $DB->count_records_sql($countsql.$joins[0].$clausesql.$approvalsql.')', $params);
 405             echo '<div class="head"><div class="activityhead">'.get_string('andmorenewentries', 'glossary', $numnewentries - GLOSSARY_RECENT_ACTIVITY_LIMIT).'</div></div>';
 406             break;
 407         }
 408     }
 409
 410     return true;
 411 }
 412
 413 /**
 414  * @global object
 415  * @param object $log
 416  */
 417 function glossary_log_info($log) {
 418     global $DB;
 419
 420     return $DB->get_record_sql("SELECT e.*, u.firstname, u.lastname
 421                                   FROM {glossary_entries} e, {user} u
 422                                  WHERE e.id = ? AND u.id = ?", array($log->info, $log->userid));
 423 }
 424
 425 /**
 426  * Function to be run periodically according to the moodle cron
 427  * This function searches for things that need to be done, such
 428  * as sending out mail, toggling flags etc ...
 429  * @return bool
 430  */
 431 function glossary_cron () {
 432     return true;
 433 }
 434
 435 /**
 436  * Return grade for given user or all users.
 437  *
 438  * @global object
 439  * @param int $glossaryid id of glossary
 440  * @param int $userid optional user id, 0 means all users
 441  * @return array array of grades, false if none
 442  */
 443 function glossary_get_user_grades($glossary, $userid=0) {
 444     global $CFG;
 445
 446     require_once($CFG->dirroot.'/rating/lib.php');
 447
 448     $ratingoptions = new stdClass;
 449
 450     //need these to work backwards to get a context id. Is there a better way to get contextid from a module instance?
 451     $ratingoptions->modulename = 'glossary';
 452     $ratingoptions->moduleid   = $glossary->id;
 453     $ratingoptions->component  = 'mod_glossary';
 454     $ratingoptions->ratingarea = 'entry';
 455
 456     $ratingoptions->userid = $userid;
 457     $ratingoptions->aggregationmethod = $glossary->assessed;
 458     $ratingoptions->scaleid = $glossary->scale;
 459     $ratingoptions->itemtable = 'glossary_entries';
 460     $ratingoptions->itemtableusercolumn = 'userid';
 461
 462     $rm = new rating_manager();
 463     return $rm->get_user_grades($ratingoptions);
 464 }
 465
 466 /**
 467  * Return rating related permissions
 468  *
 469  * @param int $contextid the context id
 470  * @param string $component The component we want to get permissions for
 471  * @param string $ratingarea The ratingarea that we want to get permissions for
 472  * @return array an associative array of the user's rating permissions
 473  */
 474 function glossary_rating_permissions($contextid, $component, $ratingarea) {
 475     if ($component != 'mod_glossary' || $ratingarea != 'entry') {
 476         // We don't know about this component/ratingarea so just return null to get the
 477         // default restrictive permissions.
 478         return null;
 479     }
 480     $context = get_context_instance_by_id($contextid);
 481     return array(
 482         'view'    => has_capability('mod/glossary:viewrating', $context),
 483         'viewany' => has_capability('mod/glossary:viewanyrating', $context),
 484         'viewall' => has_capability('mod/glossary:viewallratings', $context),
 485         'rate'    => has_capability('mod/glossary:rate', $context)
 486     );
 487 }
 488
 489 /**
 490  * Validates a submitted rating
 491  * @param array $params submitted data
 492  *            context => object the context in which the rated items exists [required]
 493  *            component => The component for this module - should always be mod_forum [required]
 494  *            ratingarea => object the context in which the rated items exists [required]
 495  *            itemid => int the ID of the object being rated [required]
 496  *            scaleid => int the scale from which the user can select a rating. Used for bounds checking. [required]
 497  *            rating => int the submitted rating
 498  *            rateduserid => int the id of the user whose items have been rated. NOT the user who submitted the ratings. 0 to update all. [required]
 499  *            aggregation => int the aggregation method to apply when calculating grades ie RATING_AGGREGATE_AVERAGE [optional]
 500  * @return boolean true if the rating is valid. Will throw rating_exception if not
 501  */
 502 function glossary_rating_validate($params) {
 503     global $DB, $USER;
 504
 505     // Check the component is mod_forum
 506     if ($params['component'] != 'mod_glossary') {
 507         throw new rating_exception('invalidcomponent');
 508     }
 509
 510     // Check the ratingarea is post (the only rating area in forum)
 511     if ($params['ratingarea'] != 'entry') {
 512         throw new rating_exception('invalidratingarea');
 513     }
 514
 515     // Check the rateduserid is not the current user .. you can't rate your own posts
 516     if ($params['rateduserid'] == $USER->id) {
 517         throw new rating_exception('nopermissiontorate');
 518     }
 519
 520     $glossarysql = "SELECT g.id as glossaryid, g.scale, g.course, e.userid as userid, e.approved, e.timecreated, g.assesstimestart, g.assesstimefinish
 521                       FROM {glossary_entries} e
 522                       JOIN {glossary} g ON e.glossaryid = g.id
 523                      WHERE e.id = :itemid";
 524     $glossaryparams = array('itemid' => $params['itemid']);
 525     $info = $DB->get_record_sql($glossarysql, $glossaryparams);
 526     if (!$info) {
 527         //item doesn't exist
 528         throw new rating_exception('invaliditemid');
 529     }
 530
 531     if ($info->scale != $params['scaleid']) {
 532         //the scale being submitted doesnt match the one in the database
 533         throw new rating_exception('invalidscaleid');
 534     }
 535
 536     //check that the submitted rating is valid for the scale
 537
 538     // lower limit
 539     if ($params['rating'] < 0  && $params['rating'] != RATING_UNSET_RATING) {
 540         throw new rating_exception('invalidnum');
 541     }
 542
 543     // upper limit
 544     if ($info->scale < 0) {
 545         //its a custom scale
 546         $scalerecord = $DB->get_record('scale', array('id' => -$info->scale));
 547         if ($scalerecord) {
 548             $scalearray = explode(',', $scalerecord->scale);
 549             if ($params['rating'] > count($scalearray)) {
 550                 throw new rating_exception('invalidnum');
 551             }
 552         } else {
 553             throw new rating_exception('invalidscaleid');
 554         }
 555     } else if ($params['rating'] > $info->scale) {
 556         //if its numeric and submitted rating is above maximum
 557         throw new rating_exception('invalidnum');
 558     }
 559
 560     if (!$info->approved) {
 561         //item isnt approved
 562         throw new rating_exception('nopermissiontorate');
 563     }
 564
 565     //check the item we're rating was created in the assessable time window
 566     if (!empty($info->assesstimestart) && !empty($info->assesstimefinish)) {
 567         if ($info->timecreated < $info->assesstimestart || $info->timecreated > $info->assesstimefinish) {
 568             throw new rating_exception('notavailable');
 569         }
 570     }
 571
 572     $cm = get_coursemodule_from_instance('glossary', $info->glossaryid, $info->course, false, MUST_EXIST);
 573     $context = get_context_instance(CONTEXT_MODULE, $cm->id, MUST_EXIST);
 574
 575     // if the supplied context doesnt match the item's context
 576     if ($context->id != $params['context']->id) {
 577         throw new rating_exception('invalidcontext');
 578     }
 579
 580     return true;
 581 }
 582
 583 /**
 584  * Update activity grades
 585  *
 586  * @global object
 587  * @global object
 588  * @param object $glossary null means all glossaries (with extra cmidnumber property)
 589  * @param int $userid specific user only, 0 means all
 590  */
 591 function glossary_update_grades($glossary=null, $userid=0, $nullifnone=true) {
 592     global $CFG, $DB;
 593     require_once($CFG->libdir.'/gradelib.php');
 594
 595     if (!$glossary->assessed) {
 596         glossary_grade_item_update($glossary);
 597
 598     } else if ($grades = glossary_get_user_grades($glossary, $userid)) {
 599         glossary_grade_item_update($glossary, $grades);
 600
 601     } else if ($userid and $nullifnone) {
 602         $grade = new stdClass();
 603         $grade->userid   = $userid;
 604         $grade->rawgrade = NULL;
 605         glossary_grade_item_update($glossary, $grade);
 606
 607     } else {
 608         glossary_grade_item_update($glossary);
 609     }
 610 }
 611
 612 /**
 613  * Update all grades in gradebook.
 614  *
 615  * @global object
 616  */
 617 function glossary_upgrade_grades() {
 618     global $DB;
 619
 620     $sql = "SELECT COUNT('x')
 621               FROM {glossary} g, {course_modules} cm, {modules} m
 622              WHERE m.name='glossary' AND m.id=cm.module AND cm.instance=g.id";
 623     $count = $DB->count_records_sql($sql);
 624
 625     $sql = "SELECT g.*, cm.idnumber AS cmidnumber, g.course AS courseid
 626               FROM {glossary} g, {course_modules} cm, {modules} m
 627              WHERE m.name='glossary' AND m.id=cm.module AND cm.instance=g.id";
 628     $rs = $DB->get_recordset_sql($sql);
 629     if ($rs->valid()) {
 630         $pbar = new progress_bar('glossaryupgradegrades', 500, true);
 631         $i=0;
 632         foreach ($rs as $glossary) {
 633             $i++;
 634             upgrade_set_timeout(60*5); // set up timeout, may also abort execution
 635             glossary_update_grades($glossary, 0, false);
 636             $pbar->update($i, $count, "Updating Glossary grades ($i/$count).");
 637         }
 638     }
 639     $rs->close();
 640 }
 641
 642 /**
 643  * Create/update grade item for given glossary
 644  *
 645  * @global object
 646  * @param object $glossary object with extra cmidnumber
 647  * @param mixed optional array/object of grade(s); 'reset' means reset grades in gradebook
 648  * @return int, 0 if ok, error code otherwise
 649  */
 650 function glossary_grade_item_update($glossary, $grades=NULL) {
 651     global $CFG;
 652     require_once($CFG->libdir.'/gradelib.php');
 653
 654     $params = array('itemname'=>$glossary->name, 'idnumber'=>$glossary->cmidnumber);
 655
 656     if (!$glossary->assessed or $glossary->scale == 0) {
 657         $params['gradetype'] = GRADE_TYPE_NONE;
 658
 659     } else if ($glossary->scale > 0) {
 660         $params['gradetype'] = GRADE_TYPE_VALUE;
 661         $params['grademax']  = $glossary->scale;
 662         $params['grademin']  = 0;
 663
 664     } else if ($glossary->scale < 0) {
 665         $params['gradetype'] = GRADE_TYPE_SCALE;
 666         $params['scaleid']   = -$glossary->scale;
 667     }
 668
 669     if ($grades  === 'reset') {
 670         $params['reset'] = true;
 671         $grades = NULL;
 672     }
 673
 674     return grade_update('mod/glossary', $glossary->course, 'mod', 'glossary', $glossary->id, 0, $grades, $params);
 675 }
 676
 677 /**
 678  * Delete grade item for given glossary
 679  *
 680  * @global object
 681  * @param object $glossary object
 682  */
 683 function glossary_grade_item_delete($glossary) {
 684     global $CFG;
 685     require_once($CFG->libdir.'/gradelib.php');
 686
 687     return grade_update('mod/glossary', $glossary->course, 'mod', 'glossary', $glossary->id, 0, NULL, array('deleted'=>1));
 688 }
 689
 690 /**
 691  * Returns the users with data in one glossary
 692  * (users with records in glossary_entries, students)
 693  *
 694  * @todo: deprecated - to be deleted in 2.2
 695  *
 696  * @param int $glossaryid
 697  * @return array
 698  */
 699 function glossary_get_participants($glossaryid) {
 700     global $DB;
 701
 702     //Get students
 703     $students = $DB->get_records_sql("SELECT DISTINCT u.id, u.id
 704                                         FROM {user} u, {glossary_entries} g
 705                                  WHERE g.glossaryid = ? AND u.id = g.userid", array($glossaryid));
 706
 707     //Return students array (it contains an array of unique users)
 708     return $students;
 709 }
 710
 711 /**
 712  * @global object
 713  * @param int $gloassryid
 714  * @param int $scaleid
 715  * @return bool
 716  */
 717 function glossary_scale_used ($glossaryid,$scaleid) {
 718 //This function returns if a scale is being used by one glossary
 719     global $DB;
 720
 721     $return = false;
 722
 723     $rec = $DB->get_record("glossary", array("id"=>$glossaryid, "scale"=>-$scaleid));
 724
 725     if (!empty($rec)  && !empty($scaleid)) {
 726         $return = true;
 727     }
 728
 729     return $return;
 730 }
 731
 732 /**
 733  * Checks if scale is being used by any instance of glossary
 734  *
 735  * This is used to find out if scale used anywhere
 736  *
 737  * @global object
 738  * @param int $scaleid
 739  * @return boolean True if the scale is used by any glossary
 740  */
 741 function glossary_scale_used_anywhere($scaleid) {
 742     global $DB;
 743
 744     if ($scaleid and $DB->record_exists('glossary', array('scale'=>-$scaleid))) {
 745         return true;
 746     } else {
 747         return false;
 748     }
 749 }
 750
 751 //////////////////////////////////////////////////////////////////////////////////////
 752 /// Any other glossary functions go here.  Each of them must have a name that
 753 /// starts with glossary_
 754
 755 /**
 756  * This function return an array of valid glossary_formats records
 757  * Everytime it's called, every existing format is checked, new formats
 758  * are included if detected and old formats are deleted and any glossary
 759  * using an invalid format is updated to the default (dictionary).
 760  *
 761  * @global object
 762  * @global object
 763  * @return array
 764  */
 765 function glossary_get_available_formats() {
 766     global $CFG, $DB;
 767
 768     //Get available formats (plugin) and insert (if necessary) them into glossary_formats
 769     $formats = get_list_of_plugins('mod/glossary/formats', 'TEMPLATE');
 770     $pluginformats = array();
 771     foreach ($formats as $format) {
 772         //If the format file exists
 773         if (file_exists($CFG->dirroot.'/mod/glossary/formats/'.$format.'/'.$format.'_format.php')) {
 774             include_once($CFG->dirroot.'/mod/glossary/formats/'.$format.'/'.$format.'_format.php');
 775             //If the function exists
 776             if (function_exists('glossary_show_entry_'.$format)) {
 777                 //Acummulate it as a valid format
 778                 $pluginformats[] = $format;
 779                 //If the format doesn't exist in the table
 780                 if (!$rec = $DB->get_record('glossary_formats', array('name'=>$format))) {
 781                     //Insert the record in glossary_formats
 782                     $gf = new stdClass();
 783                     $gf->name = $format;
 784                     $gf->popupformatname = $format;
 785                     $gf->visible = 1;
 786                     $DB->insert_record("glossary_formats",$gf);
 787                 }
 788             }
 789         }
 790     }
 791
 792     //Delete non_existent formats from glossary_formats table
 793     $formats = $DB->get_records("glossary_formats");
 794     foreach ($formats as $format) {
 795         $todelete = false;
 796         //If the format in DB isn't a valid previously detected format then delete the record
 797         if (!in_array($format->name,$pluginformats)) {
 798             $todelete = true;
 799         }
 800
 801         if ($todelete) {
 802             //Delete the format
 803             $DB->delete_records('glossary_formats', array('name'=>$format->name));
 804             //Reasign existing glossaries to default (dictionary) format
 805             if ($glossaries = $DB->get_records('glossary', array('displayformat'=>$format->name))) {
 806                 foreach($glossaries as $glossary) {
 807                     $DB->set_field('glossary','displayformat','dictionary', array('id'=>$glossary->id));
 808                 }
 809             }
 810         }
 811     }
 812
 813     //Now everything is ready in glossary_formats table
 814     $formats = $DB->get_records("glossary_formats");
 815
 816     return $formats;
 817 }
 818
 819 /**
 820  * @param bool $debug
 821  * @param string $text
 822  * @param int $br
 823  */
 824 function glossary_debug($debug,$text,$br=1) {
 825     if ( $debug ) {
 826         echo '<font color="red">' . $text . '</font>';
 827         if ( $br ) {
 828             echo '<br />';
 829         }
 830     }
 831 }
 832
 833 /**
 834  *
 835  * @global object
 836  * @param int $glossaryid
 837  * @param string $entrylist
 838  * @param string $pivot
 839  * @return array
 840  */
 841 function glossary_get_entries($glossaryid, $entrylist, $pivot = "") {
 842     global $DB;
 843     if ($pivot) {
 844        $pivot .= ",";
 845     }
 846
 847     return $DB->get_records_sql("SELECT $pivot id,userid,concept,definition,format
 848                                    FROM {glossary_entries}
 849                                   WHERE glossaryid = ?
 850                                         AND id IN ($entrylist)", array($glossaryid));
 851 }
 852
 853 /**
 854  * @global object
 855  * @global object
 856  * @param object $concept
 857  * @param string $courseid
 858  * @return array
 859  */
 860 function glossary_get_entries_search($concept, $courseid) {
 861     global $CFG, $DB;
 862
 863     //Check if the user is an admin
 864     $bypassadmin = 1; //This means NO (by default)
 865     if (has_capability('moodle/course:viewhiddenactivities', get_context_instance(CONTEXT_SYSTEM))) {
 866         $bypassadmin = 0; //This means YES
 867     }
 868
 869     //Check if the user is a teacher
 870     $bypassteacher = 1; //This means NO (by default)
 871     if (has_capability('mod/glossary:manageentries', get_context_instance(CONTEXT_COURSE, $courseid))) {
 872         $bypassteacher = 0; //This means YES
 873     }
 874
 875     $conceptlower = moodle_strtolower(trim($concept));
 876
 877     $params = array('courseid1'=>$courseid, 'courseid2'=>$courseid, 'conceptlower'=>$conceptlower, 'concept'=>$concept);
 878
 879     return $DB->get_records_sql("SELECT e.*, g.name as glossaryname, cm.id as cmid, cm.course as courseid
 880                                    FROM {glossary_entries} e, {glossary} g,
 881                                         {course_modules} cm, {modules} m
 882                                   WHERE m.name = 'glossary' AND
 883                                         cm.module = m.id AND
 884                                         (cm.visible = 1 OR  cm.visible = $bypassadmin OR
 885                                             (cm.course = :courseid1 AND cm.visible = $bypassteacher)) AND
 886                                         g.id = cm.instance AND
 887                                         e.glossaryid = g.id  AND
 888                                         ( (e.casesensitive != 0 AND LOWER(concept) = :conceptlower) OR
 889                                           (e.casesensitive = 0 and concept = :concept)) AND
 890                                         (g.course = :courseid2 OR g.globalglossary = 1) AND
 891                                          e.usedynalink != 0 AND
 892                                          g.usedynalink != 0", $params);
 893 }
 894
 895 /**
 896  * @global object
 897  * @global object
 898  * @param object $course
 899  * @param object $course
 900  * @param object $glossary
 901  * @param object $entry
 902  * @param string $mode
 903  * @param string $hook
 904  * @param int $printicons
 905  * @param int $displayformat
 906  * @param bool $printview
 907  * @return mixed
 908  */
 909 function glossary_print_entry($course, $cm, $glossary, $entry, $mode='',$hook='',$printicons = 1, $displayformat  = -1, $printview = false) {
 910     global $USER, $CFG;
 911     $return = false;
 912     if ( $displayformat < 0 ) {
 913         $displayformat = $glossary->displayformat;
 914     }
 915     if ($entry->approved or ($USER->id == $entry->userid) or ($mode == 'approval' and !$entry->approved) ) {
 916         $formatfile = $CFG->dirroot.'/mod/glossary/formats/'.$displayformat.'/'.$displayformat.'_format.php';
 917         if ($printview) {
 918             $functionname = 'glossary_print_entry_'.$displayformat;
 919         } else {
 920             $functionname = 'glossary_show_entry_'.$displayformat;
 921         }
 922
 923         if (file_exists($formatfile)) {
 924             include_once($formatfile);
 925             if (function_exists($functionname)) {
 926                 $return = $functionname($course, $cm, $glossary, $entry,$mode,$hook,$printicons);
 927             } else if ($printview) {
 928                 //If the glossary_print_entry_XXXX function doesn't exist, print default (old) print format
 929                 $return = glossary_print_entry_default($entry, $glossary, $cm);
 930             }
 931         }
 932     }
 933     return $return;
 934 }
 935
 936 /**
 937  * Default (old) print format used if custom function doesn't exist in format
 938  *
 939  * @param object $entry
 940  * @param object $glossary
 941  * @param object $cm
 942  * @return void Output is echo'd
 943  */
 944 function glossary_print_entry_default ($entry, $glossary, $cm) {
 945     global $CFG;
 946
 947     require_once($CFG->libdir . '/filelib.php');
 948
 949     echo '<h3>'. strip_tags($entry->concept) . ': </h3>';
 950
 951     $definition = $entry->definition;
 952
 953     $definition = '<span class="nolink">' . strip_tags($definition) . '</span>';
 954
 955     $context = get_context_instance(CONTEXT_MODULE, $cm->id);
 956     $definition = file_rewrite_pluginfile_urls($definition, 'pluginfile.php', $context->id, 'mod_glossary', 'entry', $entry->id);
 957
 958     $options = new stdClass();
 959     $options->para = false;
 960     $options->trusted = $entry->definitiontrust;
 961     $options->context = $context;
 962     $options->overflowdiv = true;
 963     $definition = format_text($definition, $entry->definitionformat, $options);
 964     echo ($definition);
 965     echo '<br /><br />';
 966 }
 967
 968 /**
 969  * Print glossary concept/term as a heading &lt;h3>
 970  * @param object $entry
 971  */
 972 function  glossary_print_entry_concept($entry, $return=false) {
 973     global $OUTPUT;
 974     $options = new stdClass();
 975     $options->para = false;
 976     $text = format_text($OUTPUT->heading('<span class="nolink">' . $entry->concept . '</span>', 3, 'nolink'), FORMAT_MOODLE, $options);
 977     if (!empty($entry->highlight)) {
 978         $text = highlight($entry->highlight, $text);
 979     }
 980
 981     if ($return) {
 982         return $text;
 983     } else {
 984         echo $text;
 985     }
 986 }
 987
 988 /**
 989  *
 990  * @global moodle_database DB
 991  * @param object $entry
 992  * @param object $glossary
 993  * @param object $cm
 994  */
 995 function glossary_print_entry_definition($entry, $glossary, $cm) {
 996     global $DB, $GLOSSARY_EXCLUDECONCEPTS;
 997
 998     $definition = $entry->definition;
 999
1000     //Calculate all the strings to be no-linked
1001     //First, the concept
1002     $GLOSSARY_EXCLUDECONCEPTS = array($entry->concept);
1003     //Now the aliases
1004     if ( $aliases = $DB->get_records('glossary_alias', array('entryid'=>$entry->id))) {
1005         foreach ($aliases as $alias) {
1006             $GLOSSARY_EXCLUDECONCEPTS[]=trim($alias->alias);
1007         }
1008     }
1009
1010     $context = get_context_instance(CONTEXT_MODULE, $cm->id);
1011     $definition = file_rewrite_pluginfile_urls($definition, 'pluginfile.php', $context->id, 'mod_glossary', 'entry', $entry->id);
1012
1013     $options = new stdClass();
1014     $options->para = false;
1015     $options->trusted = $entry->definitiontrust;
1016     $options->context = $context;
1017     $options->overflowdiv = true;
1018     $text = format_text($definition, $entry->definitionformat, $options);
1019
1020     // Stop excluding concepts from autolinking
1021     unset($GLOSSARY_EXCLUDECONCEPTS);
1022
1023     if (!empty($entry->highlight)) {
1024         $text = highlight($entry->highlight, $text);
1025     }
1026     if (isset($entry->footer)) {   // Unparsed footer info
1027         $text .= $entry->footer;
1028     }
1029     echo $text;
1030 }
1031
1032 /**
1033  *
1034  * @global object
1035  * @param object $course
1036  * @param object $cm
1037  * @param object $glossary
1038  * @param object $entry
1039  * @param string $mode
1040  * @param string $hook
1041  * @param string $type
1042  * @return string|void
1043  */
1044 function  glossary_print_entry_aliases($course, $cm, $glossary, $entry,$mode='',$hook='', $type = 'print') {
1045     global $DB;
1046
1047     $return = '';
1048     if ( $aliases = $DB->get_records('glossary_alias', array('entryid'=>$entry->id))) {
1049         foreach ($aliases as $alias) {
1050             if (trim($alias->alias)) {
1051                 if ($return == '') {
1052                     $return = '<select style="font-size:8pt">';
1053                 }
1054                 $return .= "<option>$alias->alias</option>";
1055             }
1056         }
1057         if ($return != '') {
1058             $return .= '</select>';
1059         }
1060     }
1061     if ($type == 'print') {
1062         echo $return;
1063     } else {
1064         return $return;
1065     }
1066 }
1067
1068 /**
1069  *
1070  * @global object
1071  * @global object
1072  * @global object
1073  * @param object $course
1074  * @param object $cm
1075  * @param object $glossary
1076  * @param object $entry
1077  * @param string $mode
1078  * @param string $hook
1079  * @param string $type
1080  * @return string|void
1081  */
1082 function glossary_print_entry_icons($course, $cm, $glossary, $entry, $mode='',$hook='', $type = 'print') {
1083     global $USER, $CFG, $DB, $OUTPUT;
1084
1085     $context = get_context_instance(CONTEXT_MODULE, $cm->id);
1086
1087     $output = false;   //To decide if we must really return text in "return". Activate when needed only!
1088     $importedentry = ($entry->sourceglossaryid == $glossary->id);
1089     $ismainglossary = $glossary->mainglossary;
1090
1091
1092     $return = '<span class="commands">';
1093     // Differentiate links for each entry.
1094     $altsuffix = ': '.strip_tags(format_text($entry->concept));
1095
1096     if (!$entry->approved) {
1097         $output = true;
1098         $return .= get_string('entryishidden','glossary');
1099     }
1100
1101     $iscurrentuser = ($entry->userid == $USER->id);
1102
1103     if (has_capability('mod/glossary:manageentries', $context) or (isloggedin() and has_capability('mod/glossary:write', $context) and $iscurrentuser)) {
1104         // only teachers can export entries so check it out
1105         if (has_capability('mod/glossary:export', $context) and !$ismainglossary and !$importedentry) {
1106             $mainglossary = $DB->get_record('glossary', array('mainglossary'=>1,'course'=>$course->id));
1107             if ( $mainglossary ) {  // if there is a main glossary defined, allow to export the current entry
1108                 $output = true;
1109                 $return .= ' <a title="'.get_string('exporttomainglossary','glossary') . '" href="exportentry.php?id='.$entry->id.'&amp;prevmode='.$mode.'&amp;hook='.urlencode($hook).'"><img src="'.$OUTPUT->pix_url('export', 'glossary').'" class="iconsmall" alt="'.get_string('exporttomainglossary','glossary').$altsuffix.'" /></a>';
1110             }
1111         }
1112
1113         if ( $entry->sourceglossaryid ) {
1114             $icon = $OUTPUT->pix_url('minus', 'glossary');   // graphical metaphor (minus) for deleting an imported entry
1115         } else {
1116             $icon = $OUTPUT->pix_url('t/delete');
1117         }
1118
1119         //Decide if an entry is editable:
1120         // -It isn't a imported entry (so nobody can edit a imported (from secondary to main) entry)) and
1121         // -The user is teacher or he is a student with time permissions (edit period or editalways defined).
1122         $ineditperiod = ((time() - $entry->timecreated <  $CFG->maxeditingtime) || $glossary->editalways);
1123         if ( !$importedentry and (has_capability('mod/glossary:manageentries', $context) or ($entry->userid == $USER->id and ($ineditperiod and has_capability('mod/glossary:write', $context))))) {
1124             $output = true;
1125             $return .= " <a title=\"" . get_string("delete") . "\" href=\"deleteentry.php?id=$cm->id&amp;mode=delete&amp;entry=$entry->id&amp;prevmode=$mode&amp;hook=".urlencode($hook)."\"><img src=\"";
1126             $return .= $icon;
1127             $return .= "\" class=\"iconsmall\" alt=\"" . get_string("delete") .$altsuffix."\" /></a> ";
1128
1129             $return .= " <a title=\"" . get_string("edit") . "\" href=\"edit.php?cmid=$cm->id&amp;id=$entry->id&amp;mode=$mode&amp;hook=".urlencode($hook)."\"><img src=\"" . $OUTPUT->pix_url('t/edit') . "\" class=\"iconsmall\" alt=\"" . get_string("edit") .$altsuffix. "\" /></a>";
1130         } elseif ( $importedentry ) {
1131             $return .= " <font size=\"-1\">" . get_string("exportedentry","glossary") . "</font>";
1132         }
1133     }
1134     if (!empty($CFG->enableportfolios) && (has_capability('mod/glossary:exportentry', $context) || ($iscurrentuser && has_capability('mod/glossary:exportownentry', $context)))) {
1135         require_once($CFG->libdir . '/portfoliolib.php');
1136         $button = new portfolio_add_button();
1137         $button->set_callback_options('glossary_entry_portfolio_caller',  array('id' => $cm->id, 'entryid' => $entry->id), '/mod/glossary/locallib.php');
1138
1139         $filecontext = $context;
1140         if ($entry->sourceglossaryid == $cm->instance) {
1141             if ($maincm = get_coursemodule_from_instance('glossary', $entry->glossaryid)) {
1142                 $filecontext = get_context_instance(CONTEXT_MODULE, $maincm->id);
1143             }
1144         }
1145         $fs = get_file_storage();
1146         if ($files = $fs->get_area_files($filecontext->id, 'mod_glossary', 'attachment', $entry->id, "timemodified", false)) {
1147             $button->set_formats(PORTFOLIO_FORMAT_RICHHTML);
1148         } else {
1149             $button->set_formats(PORTFOLIO_FORMAT_PLAINHTML);
1150         }
1151
1152         $return .= $button->to_html(PORTFOLIO_ADD_ICON_LINK);
1153     }
1154     $return .= "&nbsp;&nbsp;"; // just to make up a little the output in Mozilla ;)
1155
1156     $return .= '</span>';
1157
1158     if (!empty($CFG->usecomments) && has_capability('mod/glossary:comment', $context) and $glossary->allowcomments) {
1159         require_once($CFG->dirroot . '/comment/lib.php');
1160         $cmt = new stdClass();
1161         $cmt->component = 'mod_glossary';
1162         $cmt->context  = $context;
1163         $cmt->course   = $course;
1164         $cmt->cm       = $cm;
1165         $cmt->area     = 'glossary_entry';
1166         $cmt->itemid   = $entry->id;
1167         $cmt->showcount = true;
1168         $comment = new comment($cmt);
1169         $return .= '<div>'.$comment->output(true).'</div>';
1170         $output = true;
1171     }
1172
1173     //If we haven't calculated any REAL thing, delete result ($return)
1174     if (!$output) {
1175         $return = '';
1176     }
1177     //Print or get
1178     if ($type == 'print') {
1179         echo $return;
1180     } else {
1181         return $return;
1182     }
1183 }
1184
1185 /**
1186  * @param object $course
1187  * @param object $cm
1188  * @param object $glossary
1189  * @param object $entry
1190  * @param string $mode
1191  * @param object $hook
1192  * @param bool $printicons
1193  * @param bool $aliases
1194  * @return void
1195  */
1196 function  glossary_print_entry_lower_section($course, $cm, $glossary, $entry, $mode, $hook, $printicons, $aliases=true) {
1197     if ($aliases) {
1198         $aliases = glossary_print_entry_aliases($course, $cm, $glossary, $entry, $mode, $hook,'html');
1199     }
1200     $icons   = '';
1201     if ($printicons) {
1202         $icons   = glossary_print_entry_icons($course, $cm, $glossary, $entry, $mode, $hook,'html');
1203     }
1204     if ($aliases || $icons || !empty($entry->rating)) {
1205         echo '<table>';
1206         if ( $aliases ) {
1207             echo '<tr valign="top"><td class="aliases">' .
1208                   get_string('aliases','glossary').': '.$aliases . '</td></tr>';
1209         }
1210         if ($icons) {
1211             echo '<tr valign="top"><td class="icons">'.$icons.'</td></tr>';
1212         }
1213         if (!empty($entry->rating)) {
1214             echo '<tr valign="top"><td class="ratings">';
1215             glossary_print_entry_ratings($course, $entry);
1216             echo '</td></tr>';
1217         }
1218         echo '</table>';
1219     }
1220 }
1221
1222 /**
1223  * @todo Document this function
1224  */
1225 function glossary_print_entry_attachment($entry, $cm, $format=NULL, $align="right", $insidetable=true) {
1226 ///   valid format values: html  : Return the HTML link for the attachment as an icon
1227 ///                        text  : Return the HTML link for tha attachment as text
1228 ///                        blank : Print the output to the screen
1229     if ($entry->attachment) {
1230           if ($insidetable) {
1231               echo "<table border=\"0\" width=\"100%\" align=\"$align\"><tr><td align=\"$align\" nowrap=\"nowrap\">\n";
1232           }
1233           echo glossary_print_attachments($entry, $cm, $format, $align);
1234           if ($insidetable) {
1235               echo "</td></tr></table>\n";
1236           }
1237     }
1238 }
1239
1240 /**
1241  * @global object
1242  * @param object $cm
1243  * @param object $entry
1244  * @param string $mode
1245  * @param string $align
1246  * @param bool $insidetable
1247  */
1248 function  glossary_print_entry_approval($cm, $entry, $mode, $align="right", $insidetable=true) {
1249     global $CFG, $OUTPUT;
1250
1251     if ($mode == 'approval' and !$entry->approved) {
1252         if ($insidetable) {
1253             echo '<table class="glossaryapproval" align="'.$align.'"><tr><td align="'.$align.'">';
1254         }
1255         echo '<a title="'.get_string('approve','glossary').'" href="approve.php?eid='.$entry->id.'&amp;mode='.$mode.'&amp;sesskey='.sesskey().'"><img align="'.$align.'" src="'.$OUTPUT->pix_url('i/approve') . '" style="border:0px; width:34px; height:34px" alt="'.get_string('approve','glossary').'" /></a>';
1256         if ($insidetable) {
1257             echo '</td></tr></table>';
1258         }
1259     }
1260 }
1261
1262 /**
1263  * It returns all entries from all glossaries that matches the specified criteria
1264  *  within a given $course. It performs an $extended search if necessary.
1265  * It restrict the search to only one $glossary if the $glossary parameter is set.
1266  *
1267  * @global object
1268  * @global object
1269  * @param object $course
1270  * @param array $searchterms
1271  * @param int $extended
1272  * @param object $glossary
1273  * @return array
1274  */
1275 function glossary_search($course, $searchterms, $extended = 0, $glossary = NULL) {
1276     global $CFG, $DB;
1277
1278     if ( !$glossary ) {
1279         if ( $glossaries = $DB->get_records("glossary", array("course"=>$course->id)) ) {
1280             $glos = "";
1281             foreach ( $glossaries as $glossary ) {
1282                 $glos .= "$glossary->id,";
1283             }
1284             $glos = substr($glos,0,-1);
1285         }
1286     } else {
1287         $glos = $glossary->id;
1288     }
1289
1290     if (!has_capability('mod/glossary:manageentries', get_context_instance(CONTEXT_COURSE, $glossary->course))) {
1291         $glossarymodule = $DB->get_record("modules", array("name"=>"glossary"));
1292         $onlyvisible = " AND g.id = cm.instance AND cm.visible = 1 AND cm.module = $glossarymodule->id";
1293         $onlyvisibletable = ", {course_modules} cm";
1294     } else {
1295
1296         $onlyvisible = "";
1297         $onlyvisibletable = "";
1298     }
1299
1300     if ($DB->sql_regex_supported()) {
1301         $REGEXP    = $DB->sql_regex(true);
1302         $NOTREGEXP = $DB->sql_regex(false);
1303     }
1304
1305     $searchcond = array();
1306     $params     = array();
1307     $i = 0;
1308
1309     $concat = $DB->sql_concat('e.concept', "' '", 'e.definition');
1310
1311
1312     foreach ($searchterms as $searchterm) {
1313         $i++;
1314
1315         $NOT = false; /// Initially we aren't going to perform NOT LIKE searches, only MSSQL and Oracle
1316                    /// will use it to simulate the "-" operator with LIKE clause
1317
1318     /// Under Oracle and MSSQL, trim the + and - operators and perform
1319     /// simpler LIKE (or NOT LIKE) queries
1320         if (!$DB->sql_regex_supported()) {
1321             if (substr($searchterm, 0, 1) == '-') {
1322                 $NOT = true;
1323             }
1324             $searchterm = trim($searchterm, '+-');
1325         }
1326
1327         // TODO: +- may not work for non latin languages
1328
1329         if (substr($searchterm,0,1) == '+') {
1330             $searchterm = trim($searchterm, '+-');
1331             $searchterm = preg_quote($searchterm, '|');
1332             $searchcond[] = "$concat $REGEXP :ss$i";
1333             $params['ss'.$i] = "(^|[^a-zA-Z0-9])$searchterm([^a-zA-Z0-9]|$)";
1334
1335         } else if (substr($searchterm,0,1) == "-") {
1336             $searchterm = trim($searchterm, '+-');
1337             $searchterm = preg_quote($searchterm, '|');
1338             $searchcond[] = "$concat $NOTREGEXP :ss$i";
1339             $params['ss'.$i] = "(^|[^a-zA-Z0-9])$searchterm([^a-zA-Z0-9]|$)";
1340
1341         } else {
1342             $searchcond[] = $DB->sql_like($concat, ":ss$i", false, true, $NOT);
1343             $params['ss'.$i] = "%$searchterm%";
1344         }
1345     }
1346
1347     if (empty($searchcond)) {
1348         $totalcount = 0;
1349         return array();
1350     }
1351
1352     $searchcond = implode(" AND ", $searchcond);
1353
1354     $sql = "SELECT e.*
1355               FROM {glossary_entries} e, {glossary} g $onlyvisibletable
1356              WHERE $searchcond
1357                AND (e.glossaryid = g.id or e.sourceglossaryid = g.id) $onlyvisible
1358                AND g.id IN ($glos) AND e.approved <> 0";
1359
1360     return $DB->get_records_sql($sql, $params);
1361 }
1362
1363 /**
1364  * @global object
1365  * @param array $searchterms
1366  * @param object $glossary
1367  * @param bool $extended
1368  * @return array
1369  */
1370 function glossary_search_entries($searchterms, $glossary, $extended) {
1371     global $DB;
1372
1373     $course = $DB->get_record("course", array("id"=>$glossary->course));
1374     return glossary_search($course,$searchterms,$extended,$glossary);
1375 }
1376
1377 /**
1378  * if return=html, then return a html string.
1379  * if return=text, then return a text-only string.
1380  * otherwise, print HTML for non-images, and return image HTML
1381  *     if attachment is an image, $align set its aligment.
1382  *
1383  * @global object
1384  * @global object
1385  * @param object $entry
1386  * @param object $cm
1387  * @param string $type html, txt, empty
1388  * @param string $align left or right
1389  * @return string image string or nothing depending on $type param
1390  */
1391 function glossary_print_attachments($entry, $cm, $type=NULL, $align="left") {
1392     global $CFG, $DB, $OUTPUT;
1393
1394     if (!$context = get_context_instance(CONTEXT_MODULE, $cm->id)) {
1395         return '';
1396     }
1397
1398     if ($entry->sourceglossaryid == $cm->instance) {
1399         if (!$maincm = get_coursemodule_from_instance('glossary', $entry->glossaryid)) {
1400             return '';
1401         }
1402         $filecontext = get_context_instance(CONTEXT_MODULE, $maincm->id);
1403
1404     } else {
1405         $filecontext = $context;
1406     }
1407
1408     $strattachment = get_string('attachment', 'glossary');
1409
1410     $fs = get_file_storage();
1411
1412     $imagereturn = '';
1413     $output = '';
1414
1415     if ($files = $fs->get_area_files($filecontext->id, 'mod_glossary', 'attachment', $entry->id, "timemodified", false)) {
1416         foreach ($files as $file) {
1417             $filename = $file->get_filename();
1418             $mimetype = $file->get_mimetype();
1419             $iconimage = '<img src="'.$OUTPUT->pix_url(file_mimetype_icon($mimetype)).'" class="icon" alt="'.$mimetype.'" />';
1420             $path = file_encode_url($CFG->wwwroot.'/pluginfile.php', '/'.$context->id.'/mod_glossary/attachment/'.$entry->id.'/'.$filename);
1421
1422             if ($type == 'html') {
1423                 $output .= "<a href=\"$path\">$iconimage</a> ";
1424                 $output .= "<a href=\"$path\">".s($filename)."</a>";
1425                 $output .= "<br />";
1426
1427             } else if ($type == 'text') {
1428                 $output .= "$strattachment ".s($filename).":\n$path\n";
1429
1430             } else {
1431                 if (in_array($mimetype, array('image/gif', 'image/jpeg', 'image/png'))) {
1432                     // Image attachments don't get printed as links
1433                     $imagereturn .= "<br /><img src=\"$path\" alt=\"\" />";
1434                 } else {
1435                     $output .= "<a href=\"$path\">$iconimage</a> ";
1436                     $output .= format_text("<a href=\"$path\">".s($filename)."</a>", FORMAT_HTML, array('context'=>$context));
1437                     $output .= '<br />';
1438                 }
1439             }
1440         }
1441     }
1442
1443     if ($type) {
1444         return $output;
1445     } else {
1446         echo $output;
1447         return $imagereturn;
1448     }
1449 }
1450
1451 /**
1452  * Lists all browsable file areas
1453  *
1454  * @param object $course
1455  * @param object $cm
1456  * @param object $context
1457  * @return array
1458  */
1459 function glossary_get_file_areas($course, $cm, $context) {
1460     $areas = array();
1461     return $areas;
1462 }
1463
1464 /**
1465  * Serves the glossary attachments. Implements needed access control ;-)
1466  *
1467  * @param object $course
1468  * @param object $cm
1469  * @param object $context
1470  * @param string $filearea
1471  * @param array $args
1472  * @param bool $forcedownload
1473  * @return bool false if file not found, does not return if found - justsend the file
1474  */
1475 function glossary_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload) {
1476     global $CFG, $DB;
1477
1478     if ($context->contextlevel != CONTEXT_MODULE) {
1479         return false;
1480     }
1481
1482     require_course_login($course, true, $cm);
1483
1484     if ($filearea === 'attachment' or $filearea === 'entry') {
1485         $entryid = (int)array_shift($args);
1486
1487         require_course_login($course, true, $cm);
1488
1489         if (!$entry = $DB->get_record('glossary_entries', array('id'=>$entryid))) {
1490             return false;
1491         }
1492
1493         if (!$glossary = $DB->get_record('glossary', array('id'=>$cm->instance))) {
1494             return false;
1495         }
1496
1497         if ($glossary->defaultapproval and !$entry->approved and !has_capability('mod/glossary:approve', $context)) {
1498             return false;
1499         }
1500
1501         // this trickery here is because we need to support source glossary access
1502
1503         if ($entry->glossaryid == $cm->instance) {
1504             $filecontext = $context;
1505
1506         } else if ($entry->sourceglossaryid == $cm->instance) {
1507             if (!$maincm = get_coursemodule_from_instance('glossary', $entry->glossaryid)) {
1508                 return false;
1509             }
1510             $filecontext = get_context_instance(CONTEXT_MODULE, $maincm->id);
1511
1512         } else {
1513             return false;
1514         }
1515
1516         $relativepath = implode('/', $args);
1517         $fullpath = "/$filecontext->id/mod_glossary/$filearea/$entryid/$relativepath";
1518
1519         $fs = get_file_storage();
1520         if (!$file = $fs->get_file_by_hash(sha1($fullpath)) or $file->is_directory()) {
1521             return false;
1522         }
1523
1524         // finally send the file
1525         send_stored_file($file, 0, 0, true); // download MUST be forced - security!
1526
1527     } else if ($filearea === 'export') {
1528         require_login($course, false, $cm);
1529         require_capability('mod/glossary:export', $context);
1530
1531         if (!$glossary = $DB->get_record('glossary', array('id'=>$cm->instance))) {
1532             return false;
1533         }
1534
1535         $cat = array_shift($args);
1536         $cat = clean_param($cat, PARAM_ALPHANUM);
1537
1538         $filename = clean_filename(strip_tags(format_string($glossary->name)).'.xml');
1539         $content = glossary_generate_export_file($glossary, NULL, $cat);
1540
1541         send_file($content, $filename, 0, 0, true, true);
1542     }
1543
1544     return false;
1545 }
1546
1547 /**
1548  *
1549  */
1550 function glossary_print_tabbed_table_end() {
1551      echo "</div></div>";
1552 }
1553
1554 /**
1555  * @param object $cm
1556  * @param object $glossary
1557  * @param string $mode
1558  * @param string $hook
1559  * @param string $sortkey
1560  * @param string $sortorder
1561  */
1562 function glossary_print_approval_menu($cm, $glossary,$mode, $hook, $sortkey = '', $sortorder = '') {
1563     if ($glossary->showalphabet) {
1564         echo '<div class="glossaryexplain">' . get_string("explainalphabet","glossary") . '</div><br />';
1565     }
1566     glossary_print_special_links($cm, $glossary, $mode, $hook);
1567
1568     glossary_print_alphabet_links($cm, $glossary, $mode, $hook,$sortkey, $sortorder);
1569
1570     glossary_print_all_links($cm, $glossary, $mode, $hook);
1571
1572     glossary_print_sorting_links($cm, $mode, 'CREATION', 'asc');
1573 }
1574 /**
1575  * @param object $cm
1576  * @param object $glossary
1577  * @param string $hook
1578  * @param string $sortkey
1579  * @param string $sortorder
1580  */
1581 function glossary_print_import_menu($cm, $glossary, $mode, $hook, $sortkey='', $sortorder = '') {
1582     echo '<div class="glossaryexplain">' . get_string("explainimport","glossary") . '</div>';
1583 }
1584
1585 /**
1586  * @param object $cm
1587  * @param object $glossary
1588  * @param string $hook
1589  * @param string $sortkey
1590  * @param string $sortorder
1591  */
1592 function glossary_print_export_menu($cm, $glossary, $mode, $hook, $sortkey='', $sortorder = '') {
1593     echo '<div class="glossaryexplain">' . get_string("explainexport","glossary") . '</div>';
1594 }
1595 /**
1596  * @param object $cm
1597  * @param object $glossary
1598  * @param string $hook
1599  * @param string $sortkey
1600  * @param string $sortorder
1601  */
1602 function glossary_print_alphabet_menu($cm, $glossary, $mode, $hook, $sortkey='', $sortorder = '') {
1603     if ( $mode != 'date' ) {
1604         if ($glossary->showalphabet) {
1605             echo '<div class="glossaryexplain">' . get_string("explainalphabet","glossary") . '</div><br />';
1606         }
1607
1608         glossary_print_special_links($cm, $glossary, $mode, $hook);
1609
1610         glossary_print_alphabet_links($cm, $glossary, $mode, $hook, $sortkey, $sortorder);
1611
1612         glossary_print_all_links($cm, $glossary, $mode, $hook);
1613     } else {
1614         glossary_print_sorting_links($cm, $mode, $sortkey,$sortorder);
1615     }
1616 }
1617
1618 /**
1619  * @param object $cm
1620  * @param object $glossary
1621  * @param string $hook
1622  * @param string $sortkey
1623  * @param string $sortorder
1624  */
1625 function glossary_print_author_menu($cm, $glossary,$mode, $hook, $sortkey = '', $sortorder = '') {
1626     if ($glossary->showalphabet) {
1627         echo '<div class="glossaryexplain">' . get_string("explainalphabet","glossary") . '</div><br />';
1628     }
1629
1630     glossary_print_alphabet_links($cm, $glossary, $mode, $hook, $sortkey, $sortorder);
1631     glossary_print_all_links($cm, $glossary, $mode, $hook);
1632     glossary_print_sorting_links($cm, $mode, $sortkey,$sortorder);
1633 }
1634
1635 /**
1636  * @global object
1637  * @global object
1638  * @param object $cm
1639  * @param object $glossary
1640  * @param string $hook
1641  * @param object $category
1642  */
1643 function glossary_print_categories_menu($cm, $glossary, $hook, $category) {
1644      global $CFG, $DB, $OUTPUT;
1645
1646      $context = get_context_instance(CONTEXT_MODULE, $cm->id);
1647
1648     // Prepare format_string/text options
1649     $fmtoptions = array(
1650         'context' => $context);
1651
1652      echo '<table border="0" width="100%">';
1653      echo '<tr>';
1654
1655      echo '<td align="center" style="width:20%">';
1656      if (has_capability('mod/glossary:managecategories', $context)) {
1657              $options['id'] = $cm->id;
1658              $options['mode'] = 'cat';
1659              $options['hook'] = $hook;
1660              echo $OUTPUT->single_button(new moodle_url("editcategories.php", $options), get_string("editcategories","glossary"), "get");
1661      }
1662      echo '</td>';
1663
1664      echo '<td align="center" style="width:60%">';
1665      echo '<b>';
1666
1667      $menu = array();
1668      $menu[GLOSSARY_SHOW_ALL_CATEGORIES] = get_string("allcategories","glossary");
1669      $menu[GLOSSARY_SHOW_NOT_CATEGORISED] = get_string("notcategorised","glossary");
1670
1671      $categories = $DB->get_records("glossary_categories", array("glossaryid"=>$glossary->id), "name ASC");
1672      $selected = '';
1673      if ( $categories ) {
1674           foreach ($categories as $currentcategory) {
1675                  $url = $currentcategory->id;
1676                  if ( $category ) {
1677                      if ($currentcategory->id == $category->id) {
1678                          $selected = $url;
1679                      }
1680                  }
1681                  $menu[$url] = format_string($currentcategory->name, true, $fmtoptions);
1682           }
1683      }
1684      if ( !$selected ) {
1685          $selected = GLOSSARY_SHOW_NOT_CATEGORISED;
1686      }
1687
1688      if ( $category ) {
1689         echo format_string($category->name, true, $fmtoptions);
1690      } else {
1691         if ( $hook == GLOSSARY_SHOW_NOT_CATEGORISED ) {
1692
1693             echo get_string("entrieswithoutcategory","glossary");
1694             $selected = GLOSSARY_SHOW_NOT_CATEGORISED;
1695
1696         } elseif ( $hook == GLOSSARY_SHOW_ALL_CATEGORIES ) {
1697
1698             echo get_string("allcategories","glossary");
1699             $selected = GLOSSARY_SHOW_ALL_CATEGORIES;
1700
1701         }
1702      }
1703      echo '</b></td>';
1704      echo '<td align="center" style="width:20%">';
1705
1706      $select = new single_select(new moodle_url("/mod/glossary/view.php", array('id'=>$cm->id, 'mode'=>'cat')), 'hook', $menu, $selected, null, "catmenu");
1707      echo $OUTPUT->render($select);
1708
1709      echo '</td>';
1710      echo '</tr>';
1711
1712      echo '</table>';
1713 }
1714
1715 /**
1716  * @global object
1717  * @param object $cm
1718  * @param object $glossary
1719  * @param string $mode
1720  * @param string $hook
1721  */
1722 function glossary_print_all_links($cm, $glossary, $mode, $hook) {
1723 global $CFG;
1724      if ( $glossary->showall) {
1725          $strallentries       = get_string("allentries", "glossary");
1726          if ( $hook == 'ALL' ) {
1727               echo "<b>$strallentries</b>";
1728          } else {
1729               $strexplainall = strip_tags(get_string("explainall","glossary"));
1730               echo "<a title=\"$strexplainall\" href=\"$CFG->wwwroot/mod/glossary/view.php?id=$cm->id&amp;mode=$mode&amp;hook=ALL\">$strallentries</a>";
1731          }
1732      }
1733 }
1734
1735 /**
1736  * @global object
1737  * @param object $cm
1738  * @param object $glossary
1739  * @param string $mode
1740  * @param string $hook
1741  */
1742 function glossary_print_special_links($cm, $glossary, $mode, $hook) {
1743 global $CFG;
1744      if ( $glossary->showspecial) {
1745          $strspecial          = get_string("special", "glossary");
1746          if ( $hook == 'SPECIAL' ) {
1747               echo "<b>$strspecial</b> | ";
1748          } else {
1749               $strexplainspecial = strip_tags(get_string("explainspecial","glossary"));
1750               echo "<a title=\"$strexplainspecial\" href=\"$CFG->wwwroot/mod/glossary/view.php?id=$cm->id&amp;mode=$mode&amp;hook=SPECIAL\">$strspecial</a> | ";
1751          }
1752      }
1753 }
1754
1755 /**
1756  * @global object
1757  * @param object $glossary
1758  * @param string $mode
1759  * @param string $hook
1760  * @param string $sortkey
1761  * @param string $sortorder
1762  */
1763 function glossary_print_alphabet_links($cm, $glossary, $mode, $hook, $sortkey, $sortorder) {
1764 global $CFG;
1765      if ( $glossary->showalphabet) {
1766           $alphabet = explode(",", get_string('alphabet', 'langconfig'));
1767           for ($i = 0; $i < count($alphabet); $i++) {
1768               if ( $hook == $alphabet[$i] and $hook) {
1769                    echo "<b>$alphabet[$i]</b>";
1770               } else {
1771                    echo "<a href=\"$CFG->wwwroot/mod/glossary/view.php?id=$cm->id&amp;mode=$mode&amp;hook=".urlencode($alphabet[$i])."&amp;sortkey=$sortkey&amp;sortorder=$sortorder\">$alphabet[$i]</a>";
1772               }
1773               echo ' | ';
1774           }
1775      }
1776 }
1777
1778 /**
1779  * @global object
1780  * @param object $cm
1781  * @param string $mode
1782  * @param string $sortkey
1783  * @param string $sortorder
1784  */
1785 function glossary_print_sorting_links($cm, $mode, $sortkey = '',$sortorder = '') {
1786     global $CFG, $OUTPUT;
1787
1788     $asc    = get_string("ascending","glossary");
1789     $desc   = get_string("descending","glossary");
1790     $bopen  = '<b>';
1791     $bclose = '</b>';
1792
1793      $neworder = '';
1794      $currentorder = '';
1795      $currentsort = '';
1796      if ( $sortorder ) {
1797          if ( $sortorder == 'asc' ) {
1798              $currentorder = $asc;
1799              $neworder = '&amp;sortorder=desc';
1800              $newordertitle = get_string('changeto', 'glossary', $desc);
1801          } else {
1802              $currentorder = $desc;
1803              $neworder = '&amp;sortorder=asc';
1804              $newordertitle = get_string('changeto', 'glossary', $asc);
1805          }
1806          $icon = " <img src=\"".$OUTPUT->pix_url($sortorder, 'glossary')."\" class=\"icon\" alt=\"$newordertitle\" />";
1807      } else {
1808          if ( $sortkey != 'CREATION' and $sortkey != 'UPDATE' and
1809                $sortkey != 'FIRSTNAME' and $sortkey != 'LASTNAME' ) {
1810              $icon = "";
1811              $newordertitle = $asc;
1812          } else {
1813              $newordertitle = $desc;
1814              $neworder = '&amp;sortorder=desc';
1815              $icon = ' <img src="'.$OUTPUT->pix_url('asc', 'glossary').'" class="icon" alt="'.$newordertitle.'" />';
1816          }
1817      }
1818      $ficon     = '';
1819      $fneworder = '';
1820      $fbtag     = '';
1821      $fendbtag  = '';
1822
1823      $sicon     = '';
1824      $sneworder = '';
1825
1826      $sbtag      = '';
1827      $fbtag      = '';
1828      $fendbtag      = '';
1829      $sendbtag      = '';
1830
1831      $sendbtag  = '';
1832
1833      if ( $sortkey == 'CREATION' or $sortkey == 'FIRSTNAME' ) {
1834          $ficon       = $icon;
1835          $fneworder   = $neworder;
1836          $fordertitle = $newordertitle;
1837          $sordertitle = $asc;
1838          $fbtag       = $bopen;
1839          $fendbtag    = $bclose;
1840      } elseif ($sortkey == 'UPDATE' or $sortkey == 'LASTNAME') {
1841          $sicon = $icon;
1842          $sneworder   = $neworder;
1843          $fordertitle = $asc;
1844          $sordertitle = $newordertitle;
1845          $sbtag       = $bopen;
1846          $sendbtag    = $bclose;
1847      } else {
1848          $fordertitle = $asc;
1849          $sordertitle = $asc;
1850      }
1851
1852      if ( $sortkey == 'CREATION' or $sortkey == 'UPDATE' ) {
1853          $forder = 'CREATION';
1854          $sorder =  'UPDATE';
1855          $fsort  = get_string("sortbycreation", "glossary");
1856          $ssort  = get_string("sortbylastupdate", "glossary");
1857
1858          $currentsort = $fsort;
1859          if ($sortkey == 'UPDATE') {
1860              $currentsort = $ssort;
1861          }
1862          $sort        = get_string("sortchronogically", "glossary");
1863      } elseif ( $sortkey == 'FIRSTNAME' or $sortkey == 'LASTNAME') {
1864          $forder = 'FIRSTNAME';
1865          $sorder =  'LASTNAME';
1866          $fsort  = get_string("firstname");
1867          $ssort  = get_string("lastname");
1868
1869          $currentsort = $fsort;
1870          if ($sortkey == 'LASTNAME') {
1871              $currentsort = $ssort;
1872          }
1873          $sort        = get_string("sortby", "glossary");
1874      }
1875      $current = '<span class="accesshide">'.get_string('current', 'glossary', "$currentsort $currentorder").'</span>';
1876      echo "<br />$current $sort: $sbtag<a title=\"$ssort $sordertitle\" href=\"$CFG->wwwroot/mod/glossary/view.php?id=$cm->id&amp;sortkey=$sorder$sneworder&amp;mode=$mode\">$ssort$sicon</a>$sendbtag | ".
1877                           "$fbtag<a title=\"$fsort $fordertitle\" href=\"$CFG->wwwroot/mod/glossary/view.php?id=$cm->id&amp;sortkey=$forder$fneworder&amp;mode=$mode\">$fsort$ficon</a>$fendbtag<br />";
1878 }
1879
1880 /**
1881  *
1882  * @param object $entry0
1883  * @param object $entry1
1884  * @return int [-1 | 0 | 1]
1885  */
1886 function glossary_sort_entries ( $entry0, $entry1 ) {
1887
1888     if ( moodle_strtolower(ltrim($entry0->concept)) < moodle_strtolower(ltrim($entry1->concept)) ) {
1889         return -1;
1890     } elseif ( moodle_strtolower(ltrim($entry0->concept)) > moodle_strtolower(ltrim($entry1->concept)) ) {
1891         return 1;
1892     } else {
1893         return 0;
1894     }
1895 }
1896
1897
1898 /**
1899  * @global object
1900  * @global object
1901  * @global object
1902  * @param object $course
1903  * @param object $entry
1904  * @return bool
1905  */
1906 function  glossary_print_entry_ratings($course, $entry) {
1907     global $OUTPUT;
1908     if( !empty($entry->rating) ){
1909         echo $OUTPUT->render($entry->rating);
1910     }
1911 }
1912
1913 /**
1914  *
1915  * @global object
1916  * @global object
1917  * @global object
1918  * @param int $courseid
1919  * @param array $entries
1920  * @param int $displayformat
1921  */
1922 function glossary_print_dynaentry($courseid, $entries, $displayformat = -1) {
1923     global $USER,$CFG, $DB;
1924
1925     echo '<div class="boxaligncenter">';
1926     echo '<table class="glossarypopup" cellspacing="0"><tr>';
1927     echo '<td>';
1928     if ( $entries ) {
1929         foreach ( $entries as $entry ) {
1930             if (! $glossary = $DB->get_record('glossary', array('id'=>$entry->glossaryid))) {
1931                 print_error('invalidid', 'glossary');
1932             }
1933             if (! $course = $DB->get_record('course', array('id'=>$glossary->course))) {
1934                 print_error('coursemisconf');
1935             }
1936             if (!$cm = get_coursemodule_from_instance('glossary', $entry->glossaryid, $glossary->course) ) {
1937                 print_error('invalidid', 'glossary');
1938             }
1939
1940             //If displayformat is present, override glossary->displayformat
1941             if ($displayformat < 0) {
1942                 $dp = $glossary->displayformat;
1943             } else {
1944                 $dp = $displayformat;
1945             }
1946
1947             //Get popupformatname
1948             $format = $DB->get_record('glossary_formats', array('name'=>$dp));
1949             $displayformat = $format->popupformatname;
1950
1951             //Check displayformat variable and set to default if necessary
1952             if (!$displayformat) {
1953                 $displayformat = 'dictionary';
1954             }
1955
1956             $formatfile = $CFG->dirroot.'/mod/glossary/formats/'.$displayformat.'/'.$displayformat.'_format.php';
1957             $functionname = 'glossary_show_entry_'.$displayformat;
1958
1959             if (file_exists($formatfile)) {
1960                 include_once($formatfile);
1961                 if (function_exists($functionname)) {
1962                     $functionname($course, $cm, $glossary, $entry,'','','','');
1963                 }
1964             }
1965         }
1966     }
1967     echo '</td>';
1968     echo '</tr></table></div>';
1969 }
1970
1971 /**
1972  *
1973  * @global object
1974  * @param array $entries
1975  * @param array $aliases
1976  * @param array $categories
1977  * @return string
1978  */
1979 function glossary_generate_export_csv($entries, $aliases, $categories) {
1980     global $CFG;
1981     $csv = '';
1982     $delimiter = '';
1983     require_once($CFG->libdir . '/csvlib.class.php');
1984     $delimiter = csv_import_reader::get_delimiter('comma');
1985     $csventries = array(0 => array(get_string('concept', 'glossary'), get_string('definition', 'glossary')));
1986     $csvaliases = array(0 => array());
1987     $csvcategories = array(0 => array());
1988     $aliascount = 0;
1989     $categorycount = 0;
1990
1991     foreach ($entries as $entry) {
1992         $thisaliasesentry = array();
1993         $thiscategoriesentry = array();
1994         $thiscsventry = array($entry->concept, nl2br($entry->definition));
1995
1996         if (array_key_exists($entry->id, $aliases) && is_array($aliases[$entry->id])) {
1997             $thiscount = count($aliases[$entry->id]);
1998             if ($thiscount > $aliascount) {
1999                 $aliascount = $thiscount;
2000             }
2001             foreach ($aliases[$entry->id] as $alias) {
2002                 $thisaliasesentry[] = trim($alias);
2003             }
2004         }
2005         if (array_key_exists($entry->id, $categories) && is_array($categories[$entry->id])) {
2006             $thiscount = count($categories[$entry->id]);
2007             if ($thiscount > $categorycount) {
2008                 $categorycount = $thiscount;
2009             }
2010             foreach ($categories[$entry->id] as $catentry) {
2011                 $thiscategoriesentry[] = trim($catentry);
2012             }
2013         }
2014         $csventries[$entry->id] = $thiscsventry;
2015         $csvaliases[$entry->id] = $thisaliasesentry;
2016         $csvcategories[$entry->id] = $thiscategoriesentry;
2017
2018     }
2019     $returnstr = '';
2020     foreach ($csventries as $id => $row) {
2021         $aliasstr = '';
2022         $categorystr = '';
2023         if ($id == 0) {
2024             $aliasstr = get_string('alias', 'glossary');
2025             $categorystr = get_string('category', 'glossary');
2026         }
2027         $row = array_merge($row, array_pad($csvaliases[$id], $aliascount, $aliasstr), array_pad($csvcategories[$id], $categorycount, $categorystr));
2028         $returnstr .= '"' . implode('"' . $delimiter . '"', $row) . '"' . "\n";
2029     }
2030     return $returnstr;
2031 }
2032
2033 /**
2034  *
2035  * @param object $glossary
2036  * @param string $ignored invalid parameter
2037  * @param int|string $hook
2038  * @return string
2039  */
2040 function glossary_generate_export_file($glossary, $ignored = "", $hook = 0) {
2041     global $CFG, $DB;
2042
2043     $co  = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
2044
2045     $co .= glossary_start_tag("GLOSSARY",0,true);
2046     $co .= glossary_start_tag("INFO",1,true);
2047         $co .= glossary_full_tag("NAME",2,false,$glossary->name);
2048         $co .= glossary_full_tag("INTRO",2,false,$glossary->intro);
2049         $co .= glossary_full_tag("INTROFORMAT",2,false,$glossary->introformat);
2050         $co .= glossary_full_tag("ALLOWDUPLICATEDENTRIES",2,false,$glossary->allowduplicatedentries);
2051         $co .= glossary_full_tag("DISPLAYFORMAT",2,false,$glossary->displayformat);
2052         $co .= glossary_full_tag("SHOWSPECIAL",2,false,$glossary->showspecial);
2053         $co .= glossary_full_tag("SHOWALPHABET",2,false,$glossary->showalphabet);
2054         $co .= glossary_full_tag("SHOWALL",2,false,$glossary->showall);
2055         $co .= glossary_full_tag("ALLOWCOMMENTS",2,false,$glossary->allowcomments);
2056         $co .= glossary_full_tag("USEDYNALINK",2,false,$glossary->usedynalink);
2057         $co .= glossary_full_tag("DEFAULTAPPROVAL",2,false,$glossary->defaultapproval);
2058         $co .= glossary_full_tag("GLOBALGLOSSARY",2,false,$glossary->globalglossary);
2059         $co .= glossary_full_tag("ENTBYPAGE",2,false,$glossary->entbypage);
2060
2061         if ( $entries = $DB->get_records("glossary_entries", array("glossaryid"=>$glossary->id))) {
2062             $co .= glossary_start_tag("ENTRIES",2,true);
2063             foreach ($entries as $entry) {
2064                 $permissiongranted = 1;
2065                 if ( $hook ) {
2066                     switch ( $hook ) {
2067                     case "ALL":
2068                     case "SPECIAL":
2069                     break;
2070                     default:
2071                         $permissiongranted = ($entry->concept[ strlen($hook)-1 ] == $hook);
2072                     break;
2073                     }
2074                 }
2075                 if ( $hook ) {
2076                     switch ( $hook ) {
2077                     case GLOSSARY_SHOW_ALL_CATEGORIES:
2078                     break;
2079                     case GLOSSARY_SHOW_NOT_CATEGORISED:
2080                         $permissiongranted = !$DB->record_exists("glossary_entries_categories", array("entryid"=>$entry->id));
2081                     break;
2082                     default:
2083                         $permissiongranted = $DB->record_exists("glossary_entries_categories", array("entryid"=>$entry->id, "categoryid"=>$hook));
2084                     break;
2085                     }
2086                 }
2087                 if ( $entry->approved and $permissiongranted ) {
2088                     $co .= glossary_start_tag("ENTRY",3,true);
2089                     $co .= glossary_full_tag("CONCEPT",4,false,trim($entry->concept));
2090                     $co .= glossary_full_tag("DEFINITION",4,false,$entry->definition);
2091                     $co .= glossary_full_tag("FORMAT",4,false,$entry->definitionformat); // note: use old name for BC reasons
2092                     $co .= glossary_full_tag("USEDYNALINK",4,false,$entry->usedynalink);
2093                     $co .= glossary_full_tag("CASESENSITIVE",4,false,$entry->casesensitive);
2094                     $co .= glossary_full_tag("FULLMATCH",4,false,$entry->fullmatch);
2095                     $co .= glossary_full_tag("TEACHERENTRY",4,false,$entry->teacherentry);
2096
2097                     if ( $aliases = $DB->get_records("glossary_alias", array("entryid"=>$entry->id))) {
2098                         $co .= glossary_start_tag("ALIASES",4,true);
2099                         foreach ($aliases as $alias) {
2100                             $co .= glossary_start_tag("ALIAS",5,true);
2101                                 $co .= glossary_full_tag("NAME",6,false,trim($alias->alias));
2102                             $co .= glossary_end_tag("ALIAS",5,true);
2103                         }
2104                         $co .= glossary_end_tag("ALIASES",4,true);
2105                     }
2106                     if ( $catentries = $DB->get_records("glossary_entries_categories", array("entryid"=>$entry->id))) {
2107                         $co .= glossary_start_tag("CATEGORIES",4,true);
2108                         foreach ($catentries as $catentry) {
2109                             $category = $DB->get_record("glossary_categories", array("id"=>$catentry->categoryid));
2110
2111                             $co .= glossary_start_tag("CATEGORY",5,true);
2112                                 $co .= glossary_full_tag("NAME",6,false,$category->name);
2113                                 $co .= glossary_full_tag("USEDYNALINK",6,false,$category->usedynalink);
2114                             $co .= glossary_end_tag("CATEGORY",5,true);
2115                         }
2116                         $co .= glossary_end_tag("CATEGORIES",4,true);
2117                     }
2118
2119                     $co .= glossary_end_tag("ENTRY",3,true);
2120                 }
2121             }
2122             $co .= glossary_end_tag("ENTRIES",2,true);
2123
2124         }
2125
2126
2127     $co .= glossary_end_tag("INFO",1,true);
2128     $co .= glossary_end_tag("GLOSSARY",0,true);
2129
2130     return $co;
2131 }
2132 /// Functions designed by Eloy Lafuente
2133 /// Functions to create, open and write header of the xml file
2134
2135 /**
2136  * Read import file and convert to current charset
2137  *
2138  * @global object
2139  * @param string $file
2140  * @return string
2141  */
2142 function glossary_read_imported_file($file_content) {
2143     require_once "../../lib/xmlize.php";
2144     global $CFG;
2145
2146     return xmlize($file_content, 0);
2147 }
2148
2149 /**
2150  * Return the xml start tag
2151  *
2152  * @param string $tag
2153  * @param int $level
2154  * @param bool $endline
2155  * @return string
2156  */
2157 function glossary_start_tag($tag,$level=0,$endline=false) {
2158         if ($endline) {
2159            $endchar = "\n";
2160         } else {
2161            $endchar = "";
2162         }
2163         return str_repeat(" ",$level*2)."<".strtoupper($tag).">".$endchar;
2164 }
2165
2166 /**
2167  * Return the xml end tag
2168  * @param string $tag
2169  * @param int $level
2170  * @param bool $endline
2171  * @return string
2172  */
2173 function glossary_end_tag($tag,$level=0,$endline=true) {
2174         if ($endline) {
2175            $endchar = "\n";
2176         } else {
2177            $endchar = "";
2178         }
2179         return str_repeat(" ",$level*2)."</".strtoupper($tag).">".$endchar;
2180 }
2181
2182 /**
2183  * Return the start tag, the contents and the end tag
2184  *
2185  * @global object
2186  * @param string $tag
2187  * @param int $level
2188  * @param bool $endline
2189  * @param string $content
2190  * @return string
2191  */
2192 function glossary_full_tag($tag,$level=0,$endline=true,$content) {
2193         global $CFG;
2194
2195         $st = glossary_start_tag($tag,$level,$endline);
2196         $co = preg_replace("/\r\n|\r/", "\n", s($content));
2197         $et = glossary_end_tag($tag,0,true);
2198         return $st.$co.$et;
2199 }
2200
2201 /**
2202  * How many unrated entries are in the given glossary for a given user?
2203  *
2204  * @global moodle_database $DB
2205  * @param int $glossaryid
2206  * @param int $userid
2207  * @return int
2208  */
2209 function glossary_count_unrated_entries($glossaryid, $userid) {
2210     global $DB;
2211
2212     $sql = "SELECT COUNT('x') as num
2213               FROM {glossary_entries}
2214              WHERE glossaryid = :glossaryid AND
2215                    userid <> :userid";
2216     $params = array('glossaryid' => $glossaryid, 'userid' => $userid);
2217     $entries = $DB->count_records_sql($sql, $params);
2218
2219     if ($entries) {
2220         // We need to get the contextid for the glossaryid we have been given.
2221         $sql = "SELECT ctx.id
2222                   FROM {context} ctx
2223                   JOIN {course_modules} cm ON cm.id = ctx.instanceid
2224                   JOIN {modules} m ON m.id = cm.module
2225                   JOIN {glossary} g ON g.id = cm.instance
2226                  WHERE ctx.contextlevel = :contextlevel AND
2227                        m.name = 'glossary' AND
2228                        g.id = :glossaryid";
2229         $contextid = $DB->get_field_sql($sql, array('glossaryid' => $glossaryid, 'contextlevel' => CONTEXT_MODULE));
2230
2231         // Now we need to count the ratings that this user has made
2232         $sql = "SELECT COUNT('x') AS num
2233                   FROM {glossary_entries} e
2234                   JOIN {ratings} r ON r.itemid = e.id
2235                  WHERE e.glossaryid = :glossaryid AND
2236                        r.userid = :userid AND
2237                        r.component = 'mod_glossary' AND
2238                        r.ratingarea = 'entry' AND
2239                        r.contextid = :contextid";
2240         $params = array('glossaryid' => $glossaryid, 'userid' => $userid, 'contextid' => $context->id);
2241         $rated = $DB->count_records_sql($sql, $params);
2242         if ($rated) {
2243             // The number or enties minus the number or rated entries equals the number of unrated
2244             // entries
2245             if ($entries->num > $rated->num) {
2246                 return $entries->num - $rated->num;
2247             } else {
2248                 return 0;    // Just in case there was a counting error
2249             }
2250         } else {
2251             return $entries->num;
2252         }
2253     } else {
2254         return 0;
2255     }
2256 }
2257
2258 /**
2259  *
2260  * Returns the html code to represent any pagging bar. Paramenters are:
2261  *
2262  * The function dinamically show the first and last pages, and "scroll" over pages.
2263  * Fully compatible with Moodle's print_paging_bar() function. Perhaps some day this
2264  * could replace the general one. ;-)
2265  *
2266  * @param int $totalcount total number of records to be displayed
2267  * @param int $page page currently selected (0 based)
2268  * @param int $perpage number of records per page
2269  * @param string $baseurl url to link in each page, the string 'page=XX' will be added automatically.
2270  *
2271  * @param int $maxpageallowed Optional maximum number of page allowed.
2272  * @param int $maxdisplay Optional maximum number of page links to show in the bar
2273  * @param string $separator Optional string to be used between pages in the bar
2274  * @param string $specialtext Optional string to be showed as an special link
2275  * @param string $specialvalue Optional value (page) to be used in the special link
2276  * @param bool $previousandnext Optional to decide if we want the previous and next links
2277  * @return string
2278  */
2279 function glossary_get_paging_bar($totalcount, $page, $perpage, $baseurl, $maxpageallowed=99999, $maxdisplay=20, $separator="&nbsp;", $specialtext="", $specialvalue=-1, $previousandnext = true) {
2280
2281     $code = '';
2282
2283     $showspecial = false;
2284     $specialselected = false;
2285
2286     //Check if we have to show the special link
2287     if (!empty($specialtext)) {
2288         $showspecial = true;
2289     }
2290     //Check if we are with the special link selected
2291     if ($showspecial && $page == $specialvalue) {
2292         $specialselected = true;
2293     }
2294
2295     //If there are results (more than 1 page)
2296     if ($totalcount > $perpage) {
2297         $code .= "<div style=\"text-align:center\">";
2298         $code .= "<p>".get_string("page").":";
2299
2300         $maxpage = (int)(($totalcount-1)/$perpage);
2301
2302         //Lower and upper limit of page
2303         if ($page < 0) {
2304             $page = 0;
2305         }
2306         if ($page > $maxpageallowed) {
2307             $page = $maxpageallowed;
2308         }
2309         if ($page > $maxpage) {
2310             $page = $maxpage;
2311         }
2312
2313         //Calculate the window of pages
2314         $pagefrom = $page - ((int)($maxdisplay / 2));
2315         if ($pagefrom < 0) {
2316             $pagefrom = 0;
2317         }
2318         $pageto = $pagefrom + $maxdisplay - 1;
2319         if ($pageto > $maxpageallowed) {
2320             $pageto = $maxpageallowed;
2321         }
2322         if ($pageto > $maxpage) {
2323             $pageto = $maxpage;
2324         }
2325
2326         //Some movements can be necessary if don't see enought pages
2327         if ($pageto - $pagefrom < $maxdisplay - 1) {
2328             if ($pageto - $maxdisplay + 1 > 0) {
2329                 $pagefrom = $pageto - $maxdisplay + 1;
2330             }
2331         }
2332
2333         //Calculate first and last if necessary
2334         $firstpagecode = '';
2335         $lastpagecode = '';
2336         if ($pagefrom > 0) {
2337             $firstpagecode = "$separator<a href=\"{$baseurl}page=0\">1</a>";
2338             if ($pagefrom > 1) {
2339                 $firstpagecode .= "$separator...";
2340             }
2341         }
2342         if ($pageto < $maxpage) {
2343             if ($pageto < $maxpage -1) {
2344                 $lastpagecode = "$separator...";
2345             }
2346             $lastpagecode .= "$separator<a href=\"{$baseurl}page=$maxpage\">".($maxpage+1)."</a>";
2347         }
2348
2349         //Previous
2350         if ($page > 0 && $previousandnext) {
2351             $pagenum = $page - 1;
2352             $code .= "&nbsp;(<a  href=\"{$baseurl}page=$pagenum\">".get_string("previous")."</a>)&nbsp;";
2353         }
2354
2355         //Add first
2356         $code .= $firstpagecode;
2357
2358         $pagenum = $pagefrom;
2359
2360         //List of maxdisplay pages
2361         while ($pagenum <= $pageto) {
2362             $pagetoshow = $pagenum +1;
2363             if ($pagenum == $page && !$specialselected) {
2364                 $code .= "$separator<b>$pagetoshow</b>";
2365             } else {
2366                 $code .= "$separator<a href=\"{$baseurl}page=$pagenum\">$pagetoshow</a>";
2367             }
2368             $pagenum++;
2369         }
2370
2371         //Add last
2372         $code .= $lastpagecode;
2373
2374         //Next
2375         if ($page < $maxpage && $page < $maxpageallowed && $previousandnext) {
2376             $pagenum = $page + 1;
2377             $code .= "$separator(<a href=\"{$baseurl}page=$pagenum\">".get_string("next")."</a>)";
2378         }
2379
2380         //Add special
2381         if ($showspecial) {
2382             $code .= '<br />';
2383             if ($specialselected) {
2384                 $code .= "<b>$specialtext</b>";
2385             } else {
2386                 $code .= "$separator<a href=\"{$baseurl}page=$specialvalue\">$specialtext</a>";
2387             }
2388         }
2389
2390         //End html
2391         $code .= "</p>";
2392         $code .= "</div>";
2393     }
2394
2395     return $code;
2396 }
2397 /**
2398  * @return array
2399  */
2400 function glossary_get_view_actions() {
2401     return array('view','view all','view entry');
2402 }
2403 /**
2404  * @return array
2405  */
2406 function glossary_get_post_actions() {
2407     return array('add category','add entry','approve entry','delete category','delete entry','edit category','update entry');
2408 }
2409
2410
2411 /**
2412  * Implementation of the function for printing the form elements that control
2413  * whether the course reset functionality affects the glossary.
2414  * @param object $mform form passed by reference
2415  */
2416 function glossary_reset_course_form_definition(&$mform) {
2417     $mform->addElement('header', 'glossaryheader', get_string('modulenameplural', 'glossary'));
2418     $mform->addElement('checkbox', 'reset_glossary_all', get_string('resetglossariesall','glossary'));
2419
2420     $mform->addElement('select', 'reset_glossary_types', get_string('resetglossaries', 'glossary'),
2421                        array('main'=>get_string('mainglossary', 'glossary'), 'secondary'=>get_string('secondaryglossary', 'glossary')), array('multiple' => 'multiple'));
2422     $mform->setAdvanced('reset_glossary_types');
2423     $mform->disabledIf('reset_glossary_types', 'reset_glossary_all', 'checked');
2424
2425     $mform->addElement('checkbox', 'reset_glossary_notenrolled', get_string('deletenotenrolled', 'glossary'));
2426     $mform->disabledIf('reset_glossary_notenrolled', 'reset_glossary_all', 'checked');
2427
2428     $mform->addElement('checkbox', 'reset_glossary_ratings', get_string('deleteallratings'));
2429     $mform->disabledIf('reset_glossary_ratings', 'reset_glossary_all', 'checked');
2430
2431     $mform->addElement('checkbox', 'reset_glossary_comments', get_string('deleteallcomments'));
2432     $mform->disabledIf('reset_glossary_comments', 'reset_glossary_all', 'checked');
2433 }
2434
2435 /**
2436  * Course reset form defaults.
2437  * @return array
2438  */
2439 function glossary_reset_course_form_defaults($course) {
2440     return array('reset_glossary_all'=>0, 'reset_glossary_ratings'=>1, 'reset_glossary_comments'=>1, 'reset_glossary_notenrolled'=>0);
2441 }
2442
2443 /**
2444  * Removes all grades from gradebook
2445  *
2446  * @global object
2447  * @param int $courseid
2448  * @param string optional type
2449  */
2450 function glossary_reset_gradebook($courseid, $type='') {
2451     global $DB;
2452
2453     switch ($type) {
2454         case 'main'      : $type = "AND g.mainglossary=1"; break;
2455         case 'secondary' : $type = "AND g.mainglossary=0"; break;
2456         default          : $type = ""; //all
2457     }
2458
2459     $sql = "SELECT g.*, cm.idnumber as cmidnumber, g.course as courseid
2460               FROM {glossary} g, {course_modules} cm, {modules} m
2461              WHERE m.name='glossary' AND m.id=cm.module AND cm.instance=g.id AND g.course=? $type";
2462
2463     if ($glossarys = $DB->get_records_sql($sql, array($courseid))) {
2464         foreach ($glossarys as $glossary) {
2465             glossary_grade_item_update($glossary, 'reset');
2466         }
2467     }
2468 }
2469 /**
2470  * Actual implementation of the reset course functionality, delete all the
2471  * glossary responses for course $data->courseid.
2472  *
2473  * @global object
2474  * @param $data the data submitted from the reset course.
2475  * @return array status array
2476  */
2477 function glossary_reset_userdata($data) {
2478     global $CFG, $DB;
2479     require_once($CFG->dirroot.'/rating/lib.php');
2480
2481     $componentstr = get_string('modulenameplural', 'glossary');
2482     $status = array();
2483
2484     $allentriessql = "SELECT e.id
2485                         FROM {glossary_entries} e
2486                              JOIN {glossary} g ON e.glossaryid = g.id
2487                        WHERE g.course = ?";
2488
2489     $allglossariessql = "SELECT g.id
2490                            FROM {glossary} g
2491                           WHERE g.course = ?";
2492
2493     $params = array($data->courseid);
2494
2495     $fs = get_file_storage();
2496
2497     $rm = new rating_manager();
2498     $ratingdeloptions = new stdClass;
2499     $ratingdeloptions->component = 'mod_glossary';
2500     $ratingdeloptions->ratingarea = 'entry';
2501
2502     // delete entries if requested
2503     if (!empty($data->reset_glossary_all)
2504          or (!empty($data->reset_glossary_types) and in_array('main', $data->reset_glossary_types) and in_array('secondary', $data->reset_glossary_types))) {
2505
2506         $params[] = 'glossary_entry';
2507         $DB->delete_records_select('comments', "itemid IN ($allentriessql) AND commentarea=?", $params);
2508         $DB->delete_records_select('glossary_alias',    "entryid IN ($allentriessql)", $params);
2509         $DB->delete_records_select('glossary_entries', "glossaryid IN ($allglossariessql)", $params);
2510
2511         // now get rid of all attachments
2512         if ($glossaries = $DB->get_records_sql($allglossariessql, $params)) {
2513             foreach ($glossaries as $glossaryid=>$unused) {
2514                 if (!$cm = get_coursemodule_from_instance('glossary', $glossaryid)) {
2515                     continue;
2516                 }
2517                 $context = get_context_instance(CONTEXT_MODULE, $cm->id);
2518                 $fs->delete_area_files($context->id, 'mod_glossary', 'attachment');
2519
2520                 //delete ratings
2521                 $ratingdeloptions->contextid = $context->id;
2522                 $rm->delete_ratings($ratingdeloptions);
2523             }
2524         }
2525
2526         // remove all grades from gradebook
2527         if (empty($data->reset_gradebook_grades)) {
2528             glossary_reset_gradebook($data->courseid);
2529         }
2530
2531         $status[] = array('component'=>$componentstr, 'item'=>get_string('resetglossariesall', 'glossary'), 'error'=>false);
2532
2533     } else if (!empty($data->reset_glossary_types)) {
2534         $mainentriessql         = "$allentriessql AND g.mainglossary=1";
2535         $secondaryentriessql    = "$allentriessql AND g.mainglossary=0";
2536
2537         $mainglossariessql      = "$allglossariessql AND g.mainglossary=1";
2538         $secondaryglossariessql = "$allglossariessql AND g.mainglossary=0";
2539
2540         if (in_array('main', $data->reset_glossary_types)) {
2541             $params[] = 'glossary_entry';
2542             $DB->delete_records_select('comments', "itemid IN ($mainentriessql) AND commentarea=?", $params);
2543             $DB->delete_records_select('glossary_entries', "glossaryid IN ($mainglossariessql)", $params);
2544
2545             if ($glossaries = $DB->get_records_sql($mainglossariessql, $params)) {
2546                 foreach ($glossaries as $glossaryid=>$unused) {
2547                     if (!$cm = get_coursemodule_from_instance('glossary', $glossaryid)) {
2548                         continue;
2549                     }
2550                     $context = get_context_instance(CONTEXT_MODULE, $cm->id);
2551                     $fs->delete_area_files($context->id, 'mod_glossary', 'attachment');
2552
2553                     //delete ratings
2554                     $ratingdeloptions->contextid = $context->id;
2555                     $rm->delete_ratings($ratingdeloptions);
2556                 }
2557             }
2558
2559             // remove all grades from gradebook
2560             if (empty($data->reset_gradebook_grades)) {
2561                 glossary_reset_gradebook($data->courseid, 'main');
2562             }
2563
2564             $status[] = array('component'=>$componentstr, 'item'=>get_string('resetglossaries', 'glossary').': '.get_string('mainglossary', 'glossary'), 'error'=>false);
2565
2566         } else if (in_array('secondary', $data->reset_glossary_types)) {
2567             $params[] = 'glossary_entry';
2568             $DB->delete_records_select('comments', "itemid IN ($secondaryentriessql) AND commentarea=?", $params);
2569             $DB->delete_records_select('glossary_entries', "glossaryid IN ($secondaryglossariessql)", $params);
2570             // remove exported source flag from entries in main glossary
2571             $DB->execute("UPDATE {glossary_entries}
2572                              SET sourceglossaryid=0
2573                            WHERE glossaryid IN ($mainglossariessql)", $params);
2574
2575             if ($glossaries = $DB->get_records_sql($secondaryglossariessql, $params)) {
2576                 foreach ($glossaries as $glossaryid=>$unused) {
2577                     if (!$cm = get_coursemodule_from_instance('glossary', $glossaryid)) {
2578                         continue;
2579                     }
2580                     $context = get_context_instance(CONTEXT_MODULE, $cm->id);
2581                     $fs->delete_area_files($context->id, 'mod_glossary', 'attachment');
2582
2583                     //delete ratings
2584                     $ratingdeloptions->contextid = $context->id;
2585                     $rm->delete_ratings($ratingdeloptions);
2586                 }
2587             }
2588
2589             // remove all grades from gradebook
2590             if (empty($data->reset_gradebook_grades)) {
2591                 glossary_reset_gradebook($data->courseid, 'secondary');
2592             }
2593
2594             $status[] = array('component'=>$componentstr, 'item'=>get_string('resetglossaries', 'glossary').': '.get_string('secondaryglossary', 'glossary'), 'error'=>false);
2595         }
2596     }
2597
2598     // remove entries by users not enrolled into course
2599     if (!empty($data->reset_glossary_notenrolled)) {
2600         $entriessql = "SELECT e.id, e.userid, e.glossaryid, u.id AS userexists, u.deleted AS userdeleted
2601                          FROM {glossary_entries} e
2602                               JOIN {glossary} g ON e.glossaryid = g.id
2603                               LEFT JOIN {user} u ON e.userid = u.id
2604                         WHERE g.course = ? AND e.userid > 0";
2605
2606         $course_context = get_context_instance(CONTEXT_COURSE, $data->courseid);
2607         $notenrolled = array();
2608         $rs = $DB->get_recordset_sql($entriessql, $params);
2609         if ($rs->valid()) {
2610             foreach ($rs as $entry) {
2611                 if (array_key_exists($entry->userid, $notenrolled) or !$entry->userexists or $entry->userdeleted
2612                   or !is_enrolled($course_context , $entry->userid)) {
2613                     $DB->delete_records('comments', array('commentarea'=>'glossary_entry', 'itemid'=>$entry->id));
2614                     $DB->delete_records('glossary_entries', array('id'=>$entry->id));
2615
2616                     if ($cm = get_coursemodule_from_instance('glossary', $entry->glossaryid)) {
2617                         $context = get_context_instance(CONTEXT_MODULE, $cm->id);
2618                         $fs->delete_area_files($context->id, 'mod_glossary', 'attachment', $entry->id);
2619
2620                         //delete ratings
2621                         $ratingdeloptions->contextid = $context->id;
2622                         $rm->delete_ratings($ratingdeloptions);
2623                     }
2624                 }
2625             }
2626             $status[] = array('component'=>$componentstr, 'item'=>get_string('deletenotenrolled', 'glossary'), 'error'=>false);
2627         }
2628         $rs->close();
2629     }
2630
2631     // remove all ratings
2632     if (!empty($data->reset_glossary_ratings)) {
2633         //remove ratings
2634         if ($glossaries = $DB->get_records_sql($allglossariessql, $params)) {
2635             foreach ($glossaries as $glossaryid=>$unused) {
2636                 if (!$cm = get_coursemodule_from_instance('glossary', $glossaryid)) {
2637                     continue;
2638                 }
2639                 $context = get_context_instance(CONTEXT_MODULE, $cm->id);
2640
2641                 //delete ratings
2642                 $ratingdeloptions->contextid = $context->id;
2643                 $rm->delete_ratings($ratingdeloptions);
2644             }
2645         }
2646
2647         // remove all grades from gradebook
2648         if (empty($data->reset_gradebook_grades)) {
2649             glossary_reset_gradebook($data->courseid);
2650         }
2651         $status[] = array('component'=>$componentstr, 'item'=>get_string('deleteallratings'), 'error'=>false);
2652     }
2653
2654     // remove comments
2655     if (!empty($data->reset_glossary_comments)) {
2656         $params[] = 'glossary_entry';
2657         $DB->delete_records_select('comments', "itemid IN ($allentriessql) AND commentarea= ? ", $params);
2658         $status[] = array('component'=>$componentstr, 'item'=>get_string('deleteallcomments'), 'error'=>false);
2659     }
2660
2661     /// updating dates - shift may be negative too
2662     if ($data->timeshift) {
2663         shift_course_mod_dates('glossary', array('assesstimestart', 'assesstimefinish'), $data->timeshift, $data->courseid);
2664         $status[] = array('component'=>$componentstr, 'item'=>get_string('datechanged'), 'error'=>false);
2665     }
2666
2667     return $status;
2668 }
2669
2670 /**
2671  * Returns all other caps used in module
2672  * @return array
2673  */
2674 function glossary_get_extra_capabilities() {
2675     return array('moodle/site:accessallgroups', 'moodle/site:viewfullnames', 'moodle/site:trustcontent', 'moodle/rating:view', 'moodle/rating:viewany', 'moodle/rating:viewall', 'moodle/rating:rate', 'moodle/comment:view', 'moodle/comment:post', 'moodle/comment:delete');
2676 }
2677
2678 /**
2679  * @param string $feature FEATURE_xx constant for requested feature
2680  * @return mixed True if module supports feature, null if doesn't know
2681  */
2682 function glossary_supports($feature) {
2683     switch($feature) {
2684         case FEATURE_GROUPS:                  return false;
2685         case FEATURE_GROUPINGS:               return false;
2686         case FEATURE_GROUPMEMBERSONLY:        return true;
2687         case FEATURE_MOD_INTRO:               return true;
2688         case FEATURE_COMPLETION_TRACKS_VIEWS: return true;
2689         case FEATURE_COMPLETION_HAS_RULES:    return true;
2690         case FEATURE_GRADE_HAS_GRADE:         return true;
2691         case FEATURE_GRADE_OUTCOMES:          return true;
2692         case FEATURE_RATE:                    return true;
2693         case FEATURE_BACKUP_MOODLE2:          return true;
2694         case FEATURE_SHOW_DESCRIPTION:        return true;
2695
2696         default: return null;
2697     }
2698 }
2699
2700 /**
2701  * Obtains the automatic completion state for this glossary based on any conditions
2702  * in glossary settings.
2703  *
2704  * @global object
2705  * @global object
2706  * @param object $course Course
2707  * @param object $cm Course-module
2708  * @param int $userid User ID
2709  * @param bool $type Type of comparison (or/and; can be used as return value if no conditions)
2710  * @return bool True if completed, false if not. (If no conditions, then return
2711  *   value depends on comparison type)
2712  */
2713 function glossary_get_completion_state($course,$cm,$userid,$type) {
2714     global $CFG, $DB;
2715
2716     // Get glossary details
2717     if (!($glossary=$DB->get_record('glossary',array('id'=>$cm->instance)))) {
2718         throw new Exception("Can't find glossary {$cm->instance}");
2719     }
2720
2721     $result=$type; // Default return value
2722
2723     if ($glossary->completionentries) {
2724         $value = $glossary->completionentries <=
2725                  $DB->count_records('glossary_entries',array('glossaryid'=>$glossary->id, 'userid'=>$userid, 'approved'=>1));
2726         if ($type == COMPLETION_AND) {
2727             $result = $result && $value;
2728         } else {
2729             $result = $result || $value;
2730         }
2731     }
2732
2733     return $result;
2734 }
2735
2736 function glossary_extend_navigation($navigation, $course, $module, $cm) {
2737     global $CFG;
2738     $navigation->add(get_string('standardview', 'glossary'), new moodle_url('/mod/glossary/view.php', array('id'=>$cm->id, 'mode'=>'letter')));
2739     $navigation->add(get_string('categoryview', 'glossary'), new moodle_url('/mod/glossary/view.php', array('id'=>$cm->id, 'mode'=>'cat')));
2740     $navigation->add(get_string('dateview', 'glossary'), new moodle_url('/mod/glossary/view.php', array('id'=>$cm->id, 'mode'=>'date')));
2741     $navigation->add(get_string('authorview', 'glossary'), new moodle_url('/mod/glossary/view.php', array('id'=>$cm->id, 'mode'=>'author')));
2742 }
2743
2744 /**
2745  * Adds module specific settings to the settings block
2746  *
2747  * @param settings_navigation $settings The settings navigation object
2748  * @param navigation_node $glossarynode The node to add module settings to
2749  */
2750 function glossary_extend_settings_navigation(settings_navigation $settings, navigation_node $glossarynode) {
2751     global $PAGE, $DB, $CFG, $USER;
2752
2753     $mode = optional_param('mode', '', PARAM_ALPHA);
2754     $hook = optional_param('hook', 'ALL', PARAM_CLEAN);
2755
2756     if (has_capability('mod/glossary:import', $PAGE->cm->context)) {
2757         $glossarynode->add(get_string('importentries', 'glossary'), new moodle_url('/mod/glossary/import.php', array('id'=>$PAGE->cm->id)));
2758     }
2759
2760     if (has_capability('mod/glossary:export', $PAGE->cm->context)) {
2761         $glossarynode->add(get_string('exportentries', 'glossary'), new moodle_url('/mod/glossary/export.php', array('id'=>$PAGE->cm->id, 'mode'=>$mode, 'hook'=>$hook)));
2762     }
2763
2764     if (has_capability('mod/glossary:approve', $PAGE->cm->context) && ($hiddenentries = $DB->count_records('glossary_entries', array('glossaryid'=>$PAGE->cm->instance, 'approved'=>0)))) {
2765         $glossarynode->add(get_string('waitingapproval', 'glossary'), new moodle_url('/mod/glossary/view.php', array('id'=>$PAGE->cm->id, 'mode'=>'approval')));
2766     }
2767
2768     if (has_capability('mod/glossary:write', $PAGE->cm->context)) {
2769         $glossarynode->add(get_string('addentry', 'glossary'), new moodle_url('/mod/glossary/edit.php', array('cmid'=>$PAGE->cm->id)));
2770     }
2771
2772     $glossary = $DB->get_record('glossary', array("id" => $PAGE->cm->instance));
2773
2774     if (!empty($CFG->enablerssfeeds) && !empty($CFG->glossary_enablerssfeeds) && $glossary->rsstype && $glossary->rssarticles  && can_access_course($PAGE->course, $USER)) {
2775         require_once("$CFG->libdir/rsslib.php");
2776
2777         $string = get_string('rsstype','forum');
2778
2779         $url = new moodle_url(rss_get_url($PAGE->cm->context->id, $USER->id, 'mod_glossary', $glossary->id));
2780         $glossarynode->add($string, $url, settings_navigation::TYPE_SETTING, null, null, new pix_icon('i/rss', ''));
2781     }
2782 }
2783
2784 /**
2785  * Running addtional permission check on plugin, for example, plugins
2786  * may have switch to turn on/off comments option, this callback will
2787  * affect UI display, not like pluginname_comment_validate only throw
2788  * exceptions.
2789  * Capability check has been done in comment->check_permissions(), we
2790  * don't need to do it again here.
2791  *
2792  * @param stdClass $comment_param {
2793  *              context  => context the context object
2794  *              courseid => int course id
2795  *              cm       => stdClass course module object
2796  *              commentarea => string comment area
2797  *              itemid      => int itemid
2798  * }
2799  * @return array
2800  */
2801 function glossary_comment_permissions($comment_param) {
2802     return array('post'=>true, 'view'=>true);
2803 }
2804
2805 /**
2806  * Validate comment parameter before perform other comments actions
2807  *
2808  * @param stdClass $comment_param {
2809  *              context  => context the context object
2810  *              courseid => int course id
2811  *              cm       => stdClass course module object
2812  *              commentarea => string comment area
2813  *              itemid      => int itemid
2814  * }
2815  * @return boolean
2816  */
2817 function glossary_comment_validate($comment_param) {
2818     global $DB;
2819     // validate comment area
2820     if ($comment_param->commentarea != 'glossary_entry') {
2821         throw new comment_exception('invalidcommentarea');
2822     }
2823     if (!$record = $DB->get_record('glossary_entries', array('id'=>$comment_param->itemid))) {
2824         throw new comment_exception('invalidcommentitemid');
2825     }
2826     if (!$glossary = $DB->get_record('glossary', array('id'=>$record->glossaryid))) {
2827         throw new comment_exception('invalidid', 'data');
2828     }
2829     if (!$course = $DB->get_record('course', array('id'=>$glossary->course))) {
2830         throw new comment_exception('coursemisconf');
2831     }
2832     if (!$cm = get_coursemodule_from_instance('glossary', $glossary->id, $course->id)) {
2833         throw new comment_exception('invalidcoursemodule');
2834     }
2835     $context = get_context_instance(CONTEXT_MODULE, $cm->id);
2836
2837     if ($glossary->defaultapproval and !$record->approved and !has_capability('mod/glossary:approve', $context)) {
2838         throw new comment_exception('notapproved', 'glossary');
2839     }
2840     // validate context id
2841     if ($context->id != $comment_param->context->id) {
2842         throw new comment_exception('invalidcontext');
2843     }
2844     // validation for comment deletion
2845     if (!empty($comment_param->commentid)) {
2846         if ($comment = $DB->get_record('comments', array('id'=>$comment_param->commentid))) {
2847             if ($comment->commentarea != 'glossary_entry') {
2848                 throw new comment_exception('invalidcommentarea');
2849             }
2850             if ($comment->contextid != $comment_param->context->id) {
2851                 throw new comment_exception('invalidcontext');
2852             }
2853             if ($comment->itemid != $comment_param->itemid) {
2854                 throw new comment_exception('invalidcommentitemid');
2855             }
2856         } else {
2857             throw new comment_exception('invalidcommentid');
2858         }
2859     }
2860     return true;
2861 }
2862
2863 /**
2864  * Return a list of page types
2865  * @param string $pagetype current page type
2866  * @param stdClass $parentcontext Block's parent context
2867  * @param stdClass $currentcontext Current context of block
2868  */
2869 function glossary_page_type_list($pagetype, $parentcontext, $currentcontext) {
2870     $module_pagetype = array(
2871         'mod-glossary-*'=>get_string('page-mod-glossary-x', 'glossary'),
2872         'mod-glossary-view'=>get_string('page-mod-glossary-view', 'glossary'),
2873         'mod-glossary-edit'=>get_string('page-mod-glossary-edit', 'glossary'));
2874     return $module_pagetype;
2875 }