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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Library of functions and constants for module glossary
* outside of what is required for the core moodle api
*
* @package mod_glossary
* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once($CFG->libdir . '/portfolio/caller.php');
require_once($CFG->libdir . '/filelib.php');
/**
* class to handle exporting an entire glossary database
*/
class glossary_full_portfolio_caller extends portfolio_module_caller_base {
private $glossary;
private $exportdata;
private $keyedfiles = array(); // keyed on entry
/**
* return array of expected call back arguments
* and whether they are required or not
*
* @return array
*/
public static function expected_callbackargs() {
return array(
'id' => true,
);
}
/**
* load up all data required for this export.
*
* @return void
*/
public function load_data() {
global $DB;
if (!$this->cm = get_coursemodule_from_id('glossary', $this->id)) {
throw new portfolio_caller_exception('invalidid', 'glossary');
}
if (!$this->glossary = $DB->get_record('glossary', array('id' => $this->cm->instance))) {
throw new portfolio_caller_exception('invalidid', 'glossary');
}
$entries = $DB->get_records('glossary_entries', array('glossaryid' => $this->glossary->id));
list($where, $params) = $DB->get_in_or_equal(array_keys($entries));
$aliases = $DB->get_records_select('glossary_alias', 'entryid ' . $where, $params);
$categoryentries = $DB->get_records_sql('SELECT ec.entryid, c.name FROM {glossary_entries_categories} ec
JOIN {glossary_categories} c
ON c.id = ec.categoryid
WHERE ec.entryid ' . $where, $params);
$this->exportdata = array('entries' => $entries, 'aliases' => $aliases, 'categoryentries' => $categoryentries);
$fs = get_file_storage();
$context = context_module::instance($this->cm->id);
$this->multifiles = array();
foreach (array_keys($entries) as $entry) {
$this->keyedfiles[$entry] = array_merge(
$fs->get_area_files($context->id, 'mod_glossary', 'attachment', $entry, "timemodified", false),
$fs->get_area_files($context->id, 'mod_glossary', 'entry', $entry, "timemodified", false)
);
$this->multifiles = array_merge($this->multifiles, $this->keyedfiles[$entry]);
}
}
/**
* how long might we expect this export to take
*
* @return constant one of PORTFOLIO_TIME_XX
*/
public function expected_time() {
$filetime = portfolio_expected_time_file($this->multifiles);
$dbtime = portfolio_expected_time_db(count($this->exportdata['entries']));
return ($filetime > $dbtime) ? $filetime : $dbtime;
}
/**
* return the sha1 of this content
*
* @return string
*/
public function get_sha1() {
$file = '';
if ($this->multifiles) {
$file = $this->get_sha1_file();
}
return sha1(serialize($this->exportdata) . $file);
}
/**
* prepare the package ready to be passed off to the portfolio plugin
*
* @return void
*/
public function prepare_package() {
$entries = $this->exportdata['entries'];
$aliases = array();
$categories = array();
if (is_array($this->exportdata['aliases'])) {
foreach ($this->exportdata['aliases'] as $alias) {
if (!array_key_exists($alias->entryid, $aliases)) {
$aliases[$alias->entryid] = array();
}
$aliases[$alias->entryid][] = $alias->alias;
}
}
if (is_array($this->exportdata['categoryentries'])) {
foreach ($this->exportdata['categoryentries'] as $cat) {
if (!array_key_exists($cat->entryid, $categories)) {
$categories[$cat->entryid] = array();
}
$categories[$cat->entryid][] = $cat->name;
}
}
if ($this->get('exporter')->get('formatclass') == PORTFOLIO_FORMAT_SPREADSHEET) {
$csv = glossary_generate_export_csv($entries, $aliases, $categories);
$this->exporter->write_new_file($csv, clean_filename($this->cm->name) . '.csv', false);
return;
} else if ($this->get('exporter')->get('formatclass') == PORTFOLIO_FORMAT_LEAP2A) {
$ids = array(); // keep track of these to make into a selection later
global $USER, $DB;
$writer = $this->get('exporter')->get('format')->leap2a_writer($USER);
$format = $this->exporter->get('format');
$filename = $this->get('exporter')->get('format')->manifest_name();
foreach ($entries as $e) {
$content = glossary_entry_portfolio_caller::entry_content(
$this->course,
$this->cm,
$this->glossary,
$e,
(array_key_exists($e->id, $aliases) ? $aliases[$e->id] : array()),
$format
);
$entry = new portfolio_format_leap2a_entry('glossaryentry' . $e->id, $e->concept, 'entry', $content);
$entry->author = $DB->get_record('user', array('id' => $e->userid), 'id,firstname,lastname,email');
$entry->published = $e->timecreated;
$entry->updated = $e->timemodified;
if (!empty($this->keyedfiles[$e->id])) {
$writer->link_files($entry, $this->keyedfiles[$e->id], 'glossaryentry' . $e->id . 'file');
foreach ($this->keyedfiles[$e->id] as $file) {
$this->exporter->copy_existing_file($file);
}
}
if (!empty($categories[$e->id])) {
foreach ($categories[$e->id] as $cat) {
// this essentially treats them as plain tags
// leap has the idea of category schemes
// but I think this is overkill here
$entry->add_category($cat);
}
}
$writer->add_entry($entry);
$ids[] = $entry->id;
}
$selection = new portfolio_format_leap2a_entry('wholeglossary' . $this->glossary->id, get_string('modulename', 'glossary'), 'selection');
$writer->add_entry($selection);
$writer->make_selection($selection, $ids, 'Grouping');
$content = $writer->to_xml();
}
$this->exporter->write_new_file($content, $filename, true);
}
/**
* make sure that the current user is allowed to do this
*
* @return boolean
*/
public function check_permissions() {
return has_capability('mod/glossary:export', context_module::instance($this->cm->id));
}
/**
* return a nice name to be displayed about this export location
*
* @return string
*/
public static function display_name() {
return get_string('modulename', 'glossary');
}
/**
* what formats this function *generally* supports
*
* @return array
*/
public static function base_supported_formats() {
return array(PORTFOLIO_FORMAT_SPREADSHEET, PORTFOLIO_FORMAT_LEAP2A);
}
}
/**
* class to export a single glossary entry
*
* @package mod_glossary
* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class glossary_entry_portfolio_caller extends portfolio_module_caller_base {
private $glossary;
private $entry;
protected $entryid;
/*
* @return array
*/
public static function expected_callbackargs() {
return array(
'entryid' => true,
'id' => true,
);
}
/**
* load up all data required for this export.
*
* @return void
*/
public function load_data() {
global $DB;
if (!$this->cm = get_coursemodule_from_id('glossary', $this->id)) {
throw new portfolio_caller_exception('invalidid', 'glossary');
}
if (!$this->glossary = $DB->get_record('glossary', array('id' => $this->cm->instance))) {
throw new portfolio_caller_exception('invalidid', 'glossary');
}
if ($this->entryid) {
if (!$this->entry = $DB->get_record('glossary_entries', array('id' => $this->entryid))) {
throw new portfolio_caller_exception('noentry', 'glossary');
}
// in case we don't have USER this will make the entry be printed
$this->entry->approved = true;
}
$this->categories = $DB->get_records_sql('SELECT ec.entryid, c.name FROM {glossary_entries_categories} ec
JOIN {glossary_categories} c
ON c.id = ec.categoryid
WHERE ec.entryid = ?', array($this->entryid));
$context = context_module::instance($this->cm->id);
if ($this->entry->sourceglossaryid == $this->cm->instance) {
if ($maincm = get_coursemodule_from_instance('glossary', $this->entry->glossaryid)) {
$context = context_module::instance($maincm->id);
}
}
$this->aliases = $DB->get_record('glossary_alias', array('entryid'=>$this->entryid));
$fs = get_file_storage();
$this->multifiles = array_merge(
$fs->get_area_files($context->id, 'mod_glossary', 'attachment', $this->entry->id, "timemodified", false),
$fs->get_area_files($context->id, 'mod_glossary', 'entry', $this->entry->id, "timemodified", false)
);
if (!empty($this->multifiles)) {
$this->add_format(PORTFOLIO_FORMAT_RICHHTML);
} else {
$this->add_format(PORTFOLIO_FORMAT_PLAINHTML);
}
}
/**
* how long might we expect this export to take
*
* @return constant one of PORTFOLIO_TIME_XX
*/
public function expected_time() {
return PORTFOLIO_TIME_LOW;
}
/**
* make sure that the current user is allowed to do this
*
* @return boolean
*/
public function check_permissions() {
$context = context_module::instance($this->cm->id);
return has_capability('mod/glossary:exportentry', $context)
|| ($this->entry->userid == $this->user->id && has_capability('mod/glossary:exportownentry', $context));
}
/**
* return a nice name to be displayed about this export location
*
* @return string
*/
public static function display_name() {
return get_string('modulename', 'glossary');
}
/**
* prepare the package ready to be passed off to the portfolio plugin
*
* @return void
*/
public function prepare_package() {
global $DB;
$format = $this->exporter->get('format');
$content = self::entry_content($this->course, $this->cm, $this->glossary, $this->entry, $this->aliases, $format);
if ($this->exporter->get('formatclass') === PORTFOLIO_FORMAT_PLAINHTML) {
$filename = clean_filename($this->entry->concept) . '.html';
$this->exporter->write_new_file($content, $filename);
} else if ($this->exporter->get('formatclass') === PORTFOLIO_FORMAT_RICHHTML) {
if ($this->multifiles) {
foreach ($this->multifiles as $file) {
$this->exporter->copy_existing_file($file);
}
}
$filename = clean_filename($this->entry->concept) . '.html';
$this->exporter->write_new_file($content, $filename);
} else if ($this->exporter->get('formatclass') === PORTFOLIO_FORMAT_LEAP2A) {
$writer = $this->get('exporter')->get('format')->leap2a_writer();
$entry = new portfolio_format_leap2a_entry('glossaryentry' . $this->entry->id, $this->entry->concept, 'entry', $content);
$entry->author = $DB->get_record('user', array('id' => $this->entry->userid), 'id,firstname,lastname,email');
$entry->published = $this->entry->timecreated;
$entry->updated = $this->entry->timemodified;
if ($this->multifiles) {
$writer->link_files($entry, $this->multifiles);
foreach ($this->multifiles as $file) {
$this->exporter->copy_existing_file($file);
}
}
if ($this->categories) {
foreach ($this->categories as $cat) {
// this essentially treats them as plain tags
// leap has the idea of category schemes
// but I think this is overkill here
$entry->add_category($cat->name);
}
}
$writer->add_entry($entry);
$content = $writer->to_xml();
$filename = $this->get('exporter')->get('format')->manifest_name();
$this->exporter->write_new_file($content, $filename);
} else {
throw new portfolio_caller_exception('unexpected_format_class', 'glossary');
}
}
/**
* return the sha1 of this content
*
* @return string
*/
public function get_sha1() {
if ($this->multifiles) {
return sha1(serialize($this->entry) . $this->get_sha1_file());
}
return sha1(serialize($this->entry));
}
/**
* what formats this function *generally* supports
*
* @return array
*/
public static function base_supported_formats() {
return array(PORTFOLIO_FORMAT_RICHHTML, PORTFOLIO_FORMAT_PLAINHTML, PORTFOLIO_FORMAT_LEAP2A);
}
/**
* helper function to get the html content of an entry
* for both this class and the full glossary exporter
* this is a very simplified version of the dictionary format output,
* but with its 500 levels of indirection removed
* and file rewriting handled by the portfolio export format.
*
* @param stdclass $course
* @param stdclass $cm
* @param stdclass $glossary
* @param stdclass $entry
*
* @return string
*/
public static function entry_content($course, $cm, $glossary, $entry, $aliases, $format) {
global $OUTPUT, $DB;
$entry = clone $entry;
$context = context_module::instance($cm->id);
$options = portfolio_format_text_options();
$options->trusted = $entry->definitiontrust;
$options->context = $context;
$output = '<table class="glossarypost dictionary" cellspacing="0">' . "\n";
$output .= '<tr valign="top">' . "\n";
$output .= '<td class="entry">' . "\n";
$output .= '<div class="concept">';
$output .= format_text($OUTPUT->heading($entry->concept, 3), FORMAT_MOODLE, $options);
$output .= '</div> ' . "\n";
$entry->definition = format_text($entry->definition, $entry->definitionformat, $options);
$output .= portfolio_rewrite_pluginfile_urls($entry->definition, $context->id, 'mod_glossary', 'entry', $entry->id, $format);
if (isset($entry->footer)) {
$output .= $entry->footer;
}
$output .= '</td></tr>' . "\n";
if (!empty($aliases)) {
$aliases = explode(',', $aliases->alias);
$output .= '<tr valign="top"><td class="entrylowersection">';
$key = (count($aliases) == 1) ? 'alias' : 'aliases';
$output .= get_string($key, 'glossary') . ': ';
foreach ($aliases as $alias) {
$output .= s($alias) . ',';
}
$output = substr($output, 0, -1);
$output .= '</td></tr>' . "\n";
}
if ($entry->sourceglossaryid == $cm->instance) {
if (!$maincm = get_coursemodule_from_instance('glossary', $entry->glossaryid)) {
return '';
}
$filecontext = context_module::instance($maincm->id);
} else {
$filecontext = $context;
}
$fs = get_file_storage();
if ($files = $fs->get_area_files($filecontext->id, 'mod_glossary', 'attachment', $entry->id, "timemodified", false)) {
$output .= '<table border="0" width="100%"><tr><td>' . "\n";
foreach ($files as $file) {
$output .= $format->file_output($file);
}
$output .= '</td></tr></table>' . "\n";
}
$output .= '</table>' . "\n";
return $output;
}
}
/**
* Class representing the virtual node with all itemids in the file browser
*
* @category files
* @copyright 2012 David Mudrak <david@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class glossary_file_info_container extends file_info {
/** @var file_browser */
protected $browser;
/** @var stdClass */
protected $course;
/** @var stdClass */
protected $cm;
/** @var string */
protected $component;
/** @var stdClass */
protected $context;
/** @var array */
protected $areas;
/** @var string */
protected $filearea;
/**
* Constructor (in case you did not realize it ;-)
*
* @param file_browser $browser
* @param stdClass $course
* @param stdClass $cm
* @param stdClass $context
* @param array $areas
* @param string $filearea
*/
public function __construct($browser, $course, $cm, $context, $areas, $filearea) {
parent::__construct($browser, $context);
$this->browser = $browser;
$this->course = $course;
$this->cm = $cm;
$this->component = 'mod_glossary';
$this->context = $context;
$this->areas = $areas;
$this->filearea = $filearea;
}
/**
* @return array with keys contextid, filearea, itemid, filepath and filename
*/
public function get_params() {
return array(
'contextid' => $this->context->id,
'component' => $this->component,
'filearea' => $this->filearea,
'itemid' => null,
'filepath' => null,
'filename' => null,
);
}
/**
* Can new files or directories be added via the file browser
*
* @return bool
*/
public function is_writable() {
return false;
}
/**
* Should this node be considered as a folder in the file browser
*
* @return bool
*/
public function is_directory() {
return true;
}
/**
* Returns localised visible name of this node
*
* @return string
*/
public function get_visible_name() {
return $this->areas[$this->filearea];
}
/**
* Returns list of children nodes
*
* @return array of file_info instances
*/
public function get_children() {
return $this->get_filtered_children('*', false, true);
}
/**
* Help function to return files matching extensions or their count
*
* @param string|array $extensions, either '*' or array of lowercase extensions, i.e. array('.gif','.jpg')
* @param bool|int $countonly if false returns the children, if an int returns just the
* count of children but stops counting when $countonly number of children is reached
* @param bool $returnemptyfolders if true returns items that don't have matching files inside
* @return array|int array of file_info instances or the count
*/
private function get_filtered_children($extensions = '*', $countonly = false, $returnemptyfolders = false) {
global $DB;
$sql = 'SELECT DISTINCT f.itemid, ge.concept
FROM {files} f
JOIN {modules} m ON (m.name = :modulename AND m.visible = 1)
JOIN {course_modules} cm ON (cm.module = m.id AND cm.id = :instanceid)
JOIN {glossary} g ON g.id = cm.instance
JOIN {glossary_entries} ge ON (ge.glossaryid = g.id AND ge.id = f.itemid)
WHERE f.contextid = :contextid
AND f.component = :component
AND f.filearea = :filearea';
$params = array(
'modulename' => 'glossary',
'instanceid' => $this->context->instanceid,
'contextid' => $this->context->id,
'component' => $this->component,
'filearea' => $this->filearea);
if (!$returnemptyfolders) {
$sql .= ' AND f.filename <> :emptyfilename';
$params['emptyfilename'] = '.';
}
list($sql2, $params2) = $this->build_search_files_sql($extensions, 'f');
$sql .= ' '.$sql2;
$params = array_merge($params, $params2);
if ($countonly !== false) {
$sql .= ' ORDER BY ge.concept, f.itemid';
}
$rs = $DB->get_recordset_sql($sql, $params);
$children = array();
foreach ($rs as $record) {
if ($child = $this->browser->get_file_info($this->context, 'mod_glossary', $this->filearea, $record->itemid)) {
$children[] = $child;
}
if ($countonly !== false && count($children) >= $countonly) {
break;
}
}
$rs->close();
if ($countonly !== false) {
return count($children);
}
return $children;
}
/**
* Returns list of children which are either files matching the specified extensions
* or folders that contain at least one such file.
*
* @param string|array $extensions, either '*' or array of lowercase extensions, i.e. array('.gif','.jpg')
* @return array of file_info instances
*/
public function get_non_empty_children($extensions = '*') {
return $this->get_filtered_children($extensions, false);
}
/**
* Returns the number of children which are either files matching the specified extensions
* or folders containing at least one such file.
*
* @param string|array $extensions, for example '*' or array('.gif','.jpg')
* @param int $limit stop counting after at least $limit non-empty children are found
* @return int
*/
public function count_non_empty_children($extensions = '*', $limit = 1) {
return $this->get_filtered_children($extensions, $limit);
}
/**
* Returns parent file_info instance
*
* @return file_info or null for root
*/
public function get_parent() {
return $this->browser->get_file_info($this->context);
}
}
/**
* Returns glossary entries tagged with a specified tag.
*
* This is a callback used by the tag area mod_glossary/glossary_entries to search for glossary entries
* tagged with a specific tag.
*
* @param core_tag_tag $tag
* @param bool $exclusivemode if set to true it means that no other entities tagged with this tag
* are displayed on the page and the per-page limit may be bigger
* @param int $fromctx context id where the link was displayed, may be used by callbacks
* to display items in the same context first
* @param int $ctx context id where to search for records
* @param bool $rec search in subcontexts as well
* @param int $page 0-based number of page being displayed
* @return \core_tag\output\tagindex
*/
function mod_glossary_get_tagged_entries($tag, $exclusivemode = false, $fromctx = 0, $ctx = 0, $rec = 1, $page = 0) {
global $OUTPUT;
$perpage = $exclusivemode ? 20 : 5;
// Build the SQL query.
$ctxselect = context_helper::get_preload_record_columns_sql('ctx');
$query = "SELECT ge.id, ge.concept, ge.glossaryid, ge.approved, ge.userid,
cm.id AS cmid, c.id AS courseid, c.shortname, c.fullname, $ctxselect
FROM {glossary_entries} ge
JOIN {glossary} g ON g.id = ge.glossaryid
JOIN {modules} m ON m.name='glossary'
JOIN {course_modules} cm ON cm.module = m.id AND cm.instance = g.id
JOIN {tag_instance} tt ON ge.id = tt.itemid
JOIN {course} c ON cm.course = c.id
JOIN {context} ctx ON ctx.instanceid = cm.id AND ctx.contextlevel = :coursemodulecontextlevel
WHERE tt.itemtype = :itemtype AND tt.tagid = :tagid AND tt.component = :component
AND cm.deletioninprogress = 0
AND ge.id %ITEMFILTER% AND c.id %COURSEFILTER%";
$params = array('itemtype' => 'glossary_entries', 'tagid' => $tag->id, 'component' => 'mod_glossary',
'coursemodulecontextlevel' => CONTEXT_MODULE);
if ($ctx) {
$context = $ctx ? context::instance_by_id($ctx) : context_system::instance();
$query .= $rec ? ' AND (ctx.id = :contextid OR ctx.path LIKE :path)' : ' AND ctx.id = :contextid';
$params['contextid'] = $context->id;
$params['path'] = $context->path.'/%';
}
$query .= " ORDER BY ";
if ($fromctx) {
// In order-clause specify that modules from inside "fromctx" context should be returned first.
$fromcontext = context::instance_by_id($fromctx);
$query .= ' (CASE WHEN ctx.id = :fromcontextid OR ctx.path LIKE :frompath THEN 0 ELSE 1 END),';
$params['fromcontextid'] = $fromcontext->id;
$params['frompath'] = $fromcontext->path.'/%';
}
$query .= ' c.sortorder, cm.id, ge.id';
$totalpages = $page + 1;
// Use core_tag_index_builder to build and filter the list of items.
$builder = new core_tag_index_builder('mod_glossary', 'glossary_entries', $query, $params, $page * $perpage, $perpage + 1);
while ($item = $builder->has_item_that_needs_access_check()) {
context_helper::preload_from_record($item);
$courseid = $item->courseid;
if (!$builder->can_access_course($courseid)) {
$builder->set_accessible($item, false);
continue;
}
$modinfo = get_fast_modinfo($builder->get_course($courseid));
// Set accessibility of this item and all other items in the same course.
$builder->walk(function ($taggeditem) use ($courseid, $modinfo, $builder) {
global $USER;
if ($taggeditem->courseid == $courseid) {
$accessible = false;
if (($cm = $modinfo->get_cm($taggeditem->cmid)) && $cm->uservisible) {
if ($taggeditem->approved) {
$accessible = true;
} else if ($taggeditem->userid == $USER->id) {
$accessible = true;
} else {
$accessible = has_capability('mod/glossary:approve', context_module::instance($cm->id));
}
}
$builder->set_accessible($taggeditem, $accessible);
}
});
}
$items = $builder->get_items();
if (count($items) > $perpage) {
$totalpages = $page + 2; // We don't need exact page count, just indicate that the next page exists.
array_pop($items);
}
// Build the display contents.
if ($items) {
$tagfeed = new core_tag\output\tagfeed();
foreach ($items as $item) {
context_helper::preload_from_record($item);
$modinfo = get_fast_modinfo($item->courseid);
$cm = $modinfo->get_cm($item->cmid);
$pageurl = new moodle_url('/mod/glossary/showentry.php', array('eid' => $item->id, 'displayformat' => 'dictionary'));
$pagename = format_string($item->concept, true, array('context' => context_module::instance($item->cmid)));
$pagename = html_writer::link($pageurl, $pagename);
$courseurl = course_get_url($item->courseid, $cm->sectionnum);
$cmname = html_writer::link($cm->url, $cm->get_formatted_name());
$coursename = format_string($item->fullname, true, array('context' => context_course::instance($item->courseid)));
$coursename = html_writer::link($courseurl, $coursename);
$icon = html_writer::link($pageurl, html_writer::empty_tag('img', array('src' => $cm->get_icon_url())));
$approved = "";
if (!$item->approved) {
$approved = '<br>'. html_writer::span(get_string('entrynotapproved', 'mod_glossary'), 'badge badge-warning');
}
$tagfeed->add($icon, $pagename, $cmname.'<br>'.$coursename.$approved);
}
$content = $OUTPUT->render_from_template('core_tag/tagfeed',
$tagfeed->export_for_template($OUTPUT));
return new core_tag\output\tagindex($tag, 'mod_glossary', 'glossary_entries', $content,
$exclusivemode, $fromctx, $ctx, $rec, $page, $totalpages);
}
}