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