Proyectos de Subversion Moodle

<?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/>.

/**

 * This file contains the renderers for the calendar within Moodle

 *

 * @copyright 2010 Sam Hemelryk

 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 * @package calendar

 */

if (!defined('MOODLE_INTERNAL')) {

    die('Direct access to this script is forbidden.');    ///  It must be included from a Moodle page

}

/**

 * The primary renderer for the calendar.

 */

class core_calendar_renderer extends plugin_renderer_base {

    /**

     * Starts the standard layout for the page

     *

     * @return string

     */

    public function start_layout() {

        return html_writer::start_tag('div', ['data-region' => 'calendar', 'class' => 'maincalendar']);

    }

    /**

     * Creates the remainder of the layout

     *

     * @return string

     */

    public function complete_layout() {

        return html_writer::end_tag('div');

    }

    /**

     * @deprecated since 4.0 MDL-72810.

     */

    public function fake_block_threemonths() {

        throw new coding_exception(__FUNCTION__ . '() has been removed.');

    }

    /**

     * Adds a pretent calendar block

     *

     * @param block_contents $bc

     * @param mixed $pos BLOCK_POS_RIGHT | BLOCK_POS_LEFT

     */

    public function add_pretend_calendar_block(block_contents $bc, $pos=BLOCK_POS_RIGHT) {

        $this->page->blocks->add_fake_block($bc, $pos);

    }

    /**

     * Creates a button to add a new event.

     *

     * @param int $courseid

     * @param int $unused1

     * @param int $unused2

     * @param int $unused3

     * @param int $unused4

     * @return string

     */

    public function add_event_button($courseid, $unused1 = null, $unused2 = null, $unused3 = null, $unused4 = null) {

        $data = [

            'contextid' => (\context_course::instance($courseid))->id,

        ];

        return $this->render_from_template('core_calendar/add_event_button', $data);

    }

    /**

     * Displays an event

     *

     * @deprecated since 3.9

     *

     * @param calendar_event $event

     * @param bool $showactions

     * @return string

     */

    public function event(calendar_event $event, $showactions=true) {

        global $CFG;

        debugging('This function is no longer used', DEBUG_DEVELOPER);

        $event = calendar_add_event_metadata($event);

        $context = $event->context;

        $output = '';

        $output .= $this->output->box_start('card-header clearfix');

        if (calendar_edit_event_allowed($event) && $showactions) {

            if (calendar_delete_event_allowed($event)) {

                $editlink = new moodle_url(CALENDAR_URL.'event.php', array('action' => 'edit', 'id' => $event->id));

                $deletelink = new moodle_url(CALENDAR_URL.'delete.php', array('id' => $event->id));

                if (!empty($event->calendarcourseid)) {

                    $editlink->param('course', $event->calendarcourseid);

                    $deletelink->param('course', $event->calendarcourseid);

                }

            } else {

                $params = array('update' => $event->cmid, 'return' => true, 'sesskey' => sesskey());

                $editlink = new moodle_url('/course/mod.php', $params);

                $deletelink = null;

            }

            $commands  = html_writer::start_tag('div', array('class' => 'commands float-sm-right'));

            $commands .= html_writer::start_tag('a', array('href' => $editlink));

            $str = get_string('tt_editevent', 'calendar');

            $commands .= $this->output->pix_icon('t/edit', $str);

            $commands .= html_writer::end_tag('a');

            if ($deletelink != null) {

                $commands .= html_writer::start_tag('a', array('href' => $deletelink));

                $str = get_string('tt_deleteevent', 'calendar');

                $commands .= $this->output->pix_icon('t/delete', $str);

                $commands .= html_writer::end_tag('a');

            }

            $commands .= html_writer::end_tag('div');

            $output .= $commands;

        }

        if (!empty($event->icon)) {

            $output .= $event->icon;

        } else {

            $output .= $this->output->spacer(array('height' => 16, 'width' => 16));

        }

        if (!empty($event->referer)) {

            $output .= $this->output->heading($event->referer, 3, array('class' => 'referer'));

        } else {

            $output .= $this->output->heading(

                format_string($event->name, false, array('context' => $context)),

                3,

                array('class' => 'name d-inline-block')

            );

        }

        // Show subscription source if needed.

        if (!empty($event->subscription) && $CFG->calendar_showicalsource) {

            if (!empty($event->subscription->url)) {

                $source = html_writer::link($event->subscription->url,

                        get_string('subscriptionsource', 'calendar', $event->subscription->name));

            } else {

                // File based ical.

                $source = get_string('subscriptionsource', 'calendar', $event->subscription->name);

            }

            $output .= html_writer::tag('div', $source, array('class' => 'subscription'));

        }

        if (!empty($event->courselink)) {

            $output .= html_writer::tag('div', $event->courselink);

        }

        if (!empty($event->time)) {

            $output .= html_writer::tag('span', $event->time, array('class' => 'date float-sm-right mr-1'));

        } else {

            $attrs = array('class' => 'date float-sm-right mr-1');

            $output .= html_writer::tag('span', calendar_time_representation($event->timestart), $attrs);

        }

        if (!empty($event->actionurl)) {

            $actionlink = html_writer::link(new moodle_url($event->actionurl), $event->actionname);

            $output .= html_writer::tag('div', $actionlink, ['class' => 'action']);

        }

        $output .= $this->output->box_end();

        $eventdetailshtml = '';

        $eventdetailsclasses = '';

        $eventdetailshtml .= format_text($event->description, $event->format, array('context' => $context));

        $eventdetailsclasses .= 'description card-block';

        if (isset($event->cssclass)) {

            $eventdetailsclasses .= ' '.$event->cssclass;

        }

        if (!empty($eventdetailshtml)) {

            $output .= html_writer::tag('div', $eventdetailshtml, array('class' => $eventdetailsclasses));

        }

        $eventhtml = html_writer::tag('div', $output, array('class' => 'card'));

        return html_writer::tag('div', $eventhtml, array('class' => 'event', 'id' => 'event_' . $event->id));

    }

    /**

     * Displays a course filter selector

     *

     * @param moodle_url $returnurl The URL that the user should be taken too upon selecting a course.

     * @param string $label The label to use for the course select.

     * @param int $courseid The id of the course to be selected.

     * @param int|null $calendarinstanceid The instance ID of the calendar we're generating this course filter for.

     * @return string

     */

    public function course_filter_selector(moodle_url $returnurl, $label = null, $courseid = null, int $calendarinstanceid = null) {

        global $CFG, $DB;

        if (!isloggedin() or isguestuser()) {

            return '';

        }

        $contextrecords = [];

        $courses = calendar_get_default_courses($courseid, 'id, shortname');

        if (!empty($courses) && count($courses) > CONTEXT_CACHE_MAX_SIZE) {

            // We need to pull the context records from the DB to preload them

            // below. The calendar_get_default_courses code will actually preload

            // the contexts itself however the context cache is capped to a certain

            // amount before it starts recycling. Unfortunately that starts to happen

            // quite a bit if a user has access to a large number of courses (e.g. admin).

            // So in order to avoid hitting the DB for each context as we loop below we

            // can load all of the context records and add them to the cache just in time.

            $courseids = array_map(function($c) {

                return $c->id;

            }, $courses);

            list($insql, $params) = $DB->get_in_or_equal($courseids);

            $contextsql = "SELECT ctx.instanceid, " . context_helper::get_preload_record_columns_sql('ctx') .

                          " FROM {context} ctx WHERE ctx.contextlevel = ? AND ctx.instanceid $insql";

            array_unshift($params, CONTEXT_COURSE);

            $contextrecords = $DB->get_records_sql($contextsql, $params);

        }

        unset($courses[SITEID]);

        $courseoptions = array();

        $courseoptions[SITEID] = get_string('fulllistofcourses');

        foreach ($courses as $course) {

            if (isset($contextrecords[$course->id])) {

                context_helper::preload_from_record($contextrecords[$course->id]);

            }

            $coursecontext = context_course::instance($course->id);

            $courseoptions[$course->id] = format_string($course->shortname, true, array('context' => $coursecontext));

        }

        if ($courseid) {

            $selected = $courseid;

        } else if ($this->page->course->id !== SITEID) {

            $selected = $this->page->course->id;

        } else {

            $selected = '';

        }

        $courseurl = new moodle_url($returnurl);

        $courseurl->remove_params('course');

        $labelattributes = [];

        if (empty($label)) {

            $label = get_string('listofcourses');

            $labelattributes['class'] = 'sr-only';

        }

        $filterid = 'calendar-course-filter';

        if ($calendarinstanceid) {

            $filterid .= "-$calendarinstanceid";

        }

        $select = html_writer::label($label, $filterid, false, $labelattributes);

        $select .= html_writer::select($courseoptions, 'course', $selected, false,

                ['class' => 'cal_courses_flt ml-1 mr-auto', 'id' => $filterid]);

        return $select;

    }

    /**

     * Render the subscriptions header

     *

     * @return string

     */

    public function render_subscriptions_header(): string {

        $importcalendarbutton = new single_button(new moodle_url('/calendar/import.php', calendar_get_export_import_link_params()),

                get_string('importcalendar', 'calendar'), 'get', single_button::BUTTON_PRIMARY);

        $importcalendarbutton->class .= ' float-sm-right float-right';

        $exportcalendarbutton = new single_button(new moodle_url('/calendar/export.php', calendar_get_export_import_link_params()),

                get_string('exportcalendar', 'calendar'), 'get', single_button::BUTTON_PRIMARY);

        $exportcalendarbutton->class .= ' float-sm-right float-right';

        $output = $this->output->heading(get_string('managesubscriptions', 'calendar'));

        $output .= html_writer::start_div('header d-flex flex-wrap mt-5');

        $headerattr = [

            'class' => 'mr-auto',

            'aria-describedby' => 'subscription_details_table',

        ];

        $output .= html_writer::tag('h3', get_string('yoursubscriptions', 'calendar'), $headerattr);

        $output .= $this->output->render($importcalendarbutton);

        $output .= $this->output->render($exportcalendarbutton);

        $output .= html_writer::end_div();

        return $output;

    }

    /**

     * Render the subscriptions blank state appearance

     *

     * @return string

     */

    public function render_no_calendar_subscriptions(): string {

        $output = html_writer::start_div('mt-5');

        $importlink = (new moodle_url('/calendar/import.php', calendar_get_export_import_link_params()))->out();

        $output .= get_string('nocalendarsubscriptionsimportexternal', 'core_calendar', $importlink);

        $output .= html_writer::end_div();

        return $output;

    }

    /**

     * Renders a table containing information about calendar subscriptions.

     *

     * @param int $unused

     * @param array $subscriptions

     * @param string $unused2

     * @return string

     */

    public function subscription_details($unused, $subscriptions, $unused2 = '') {

        $table = new html_table();

        $table->head  = array(

            get_string('colcalendar', 'calendar'),

            get_string('collastupdated', 'calendar'),

            get_string('eventkind', 'calendar'),

            get_string('colpoll', 'calendar'),

            get_string('colactions', 'calendar')

        );

        $table->data  = array();

        $table->id = 'subscription_details_table';

        if (empty($subscriptions)) {

            $importlink = (new moodle_url('/calendar/import.php', calendar_get_export_import_link_params()))->out();

            $cell = new html_table_cell(get_string('nocalendarsubscriptionsimportexternal', 'core_calendar', $importlink));

            $cell->colspan = 5;

            $table->data[] = new html_table_row(array($cell));

        }

        $strnever = new lang_string('never', 'calendar');

        foreach ($subscriptions as $sub) {

            $label = $sub->name;

            if (!empty($sub->url)) {

                $label = html_writer::link($sub->url, $label);

            }

            if (empty($sub->lastupdated)) {

                $lastupdated = $strnever->out();

            } else {

                $lastupdated = userdate($sub->lastupdated, get_string('strftimedatetimeshort', 'langconfig'));

            }

            $type = $sub->eventtype . 'events';

            $calendarname = new html_table_cell($label);

            $calendarname->header = true;

            $tablerow = new html_table_row(array(

                $calendarname,

                new html_table_cell($lastupdated),

                new html_table_cell(get_string($type, 'calendar')),

                new html_table_cell($this->render_subscription_update_interval($sub)),

                new html_table_cell($this->subscription_action_links())

            ));

            $tablerow->attributes += [

                'data-subid' => $sub->id,

                'data-subname' => $sub->name

            ];

            $table->data[] = $tablerow;

        }

        $out  = $this->output->box_start('generalbox calendarsubs');

        $out .= html_writer::table($table);

        $out .= $this->output->box_end();

        $this->page->requires->js_call_amd('core_calendar/manage_subscriptions', 'init');

        return $out;

    }

    /**

     * Render subscription update interval form.

     *

     * @param stdClass $subscription

     * @return string

     */

    protected function render_subscription_update_interval(stdClass $subscription): string {

        if (empty($subscription->url)) {

            return '';

        }

        $tmpl = new \core_calendar\output\refreshintervalcollection($subscription);

        return $this->output->render_from_template('core/inplace_editable', $tmpl->export_for_template($this->output));

    }

    /**

     * Creates a form to perform actions on a given subscription.

     *

     * @return string

     */

    protected function subscription_action_links(): string {

        $html = html_writer::start_tag('div', array('class' => 'btn-group float-left'));

        $html .= html_writer::span(html_writer::link('#', get_string('delete'),

            ['data-action' => 'delete-subscription']), '');

        $html .= html_writer::end_tag('div');

        return $html;

    }

    /**

     * Render the event filter region.

     *

     * @return  string

     */

    public function event_filter() {

        $data = [

            'eventtypes' => calendar_get_filter_types(),

        ];

        return $this->render_from_template('core_calendar/event_filter', $data);

    }

    /**

     * Render the calendar import result.

     *

     * @param array $result Import result

     * @return string|null

     */

    public function render_import_result(array $result): ?string {

        $data = [

            'eventsimported' => $result['eventsimported'],

            'eventsskipped' => $result['eventsskipped'],

            'eventsupdated' => $result['eventsupdated'],

            'eventsdeleted' => $result['eventsdeleted'],

            'haserror' => $result['haserror'],

            'errors' => $result['errors']

        ];

        return $this->render_from_template('core_calendar/subscription_update_result', $data);

    }

}