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✏️ Editing: outputactions.php

<?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/>.

/**
 * Classes representing JS event handlers, used by output components.
 *
 * Please see http://docs.moodle.org/en/Developement:How_Moodle_outputs_HTML
 * for an overview.
 *
 * @package core
 * @category output
 * @copyright 2009 Nicolas Connault
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die();

/**
 * Helper class used by other components that involve an action on the page (URL or JS).
 *
 * @copyright 2009 Nicolas Connault
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 * @since Moodle 2.0
 * @package core
 * @category output
 */
class component_action implements templatable {

/**
     * @var string $event The DOM event that will trigger this action when caught
     */
    public $event;

/**
     * @var string A function name to call when the button is clicked
     * The JS function you create must have two arguments:
     *      1. The event object
     *      2. An object/array of arguments ($jsfunctionargs)
     */
    public $jsfunction = false;

/**
     * @var array An array of arguments to pass to the JS function
     */
    public $jsfunctionargs = array();

/**
     * Constructor
     * @param string $event DOM event
     * @param string $jsfunction An optional JS function. Required if jsfunctionargs is given
     * @param array $jsfunctionargs An array of arguments to pass to the jsfunction
     */
    public function __construct($event, $jsfunction, $jsfunctionargs=array()) {
        $this->event = $event;

$this->jsfunction = $jsfunction;
        $this->jsfunctionargs = $jsfunctionargs;

if (!empty($this->jsfunctionargs)) {
            if (empty($this->jsfunction)) {
                throw new coding_exception('The component_action object needs a jsfunction value to pass the jsfunctionargs to.');
            }
        }
    }

/**
     * Export for template.
     *
     * @param renderer_base $output The renderer.
     * @return stdClass
     */
    public function export_for_template(renderer_base $output) {
        $args = !empty($this->jsfunctionargs) ? json_encode($this->jsfunctionargs) : false;
        return (object) [
            'event' => $this->event,
            'jsfunction' => $this->jsfunction,
            'jsfunctionargs' => $args,
        ];
    }
}

/**
 * Confirm action
 *
 * @copyright 2009 Nicolas Connault
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 * @since Moodle 2.0
 * @package core
 * @category output
 */
class confirm_action extends component_action {
    /**
     * Constructs the confirm action object
     *
     * @param string $message The message to display to the user when they are shown
     *    the confirm dialogue.
     * @param string $callback Deprecated since 2.7
     * @param string $continuelabel The string to use for he continue button
     * @param string $cancellabel The string to use for the cancel button
     */
    public function __construct($message, $callback = null, $continuelabel = null, $cancellabel = null) {
        if ($callback !== null) {
            debugging('The callback argument to new confirm_action() has been deprecated.' .
                    ' If you need to use a callback, please write Javascript to use moodle-core-notification-confirmation ' .
                    'and attach to the provided events.',
                    DEBUG_DEVELOPER);
        }
        parent::__construct('click', 'M.util.show_confirm_dialog', array(
                'message' => $message,
                'continuelabel' => $continuelabel, 'cancellabel' => $cancellabel));
    }
}

/**
 * Component action for a popup window.
 *
 * @copyright 2009 Nicolas Connault
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 * @since Moodle 2.0
 * @package core
 * @category output
 */
class popup_action extends component_action {

/**
     * @var string The JS function to call for the popup
     */
    public $jsfunction = 'openpopup';

/**
     * @var array An array of parameters that will be passed to the openpopup JS function
     */
    public $params = array(
            'height' =>  400,
            'width' => 500,
            'top' => 0,
            'left' => 0,
            'menubar' => false,
            'location' => false,
            'scrollbars' => true,
            'resizable' => true,
            'toolbar' => true,
            'status' => true,
            'directories' => false,
            'fullscreen' => false,
            'dependent' => true);

/**
     * Constructor
     *
     * @param string $event DOM event
     * @param moodle_url|string $url A moodle_url object, required if no jsfunction is given
     * @param string $name The JS function to call for the popup (default 'popup')
     * @param array  $params An array of popup parameters
     */
    public function __construct($event, $url, $name='popup', $params=array()) {
        global $CFG;

$url = new moodle_url($url);

if ($name) {
            $_name = $name;
            if (($_name = preg_replace("/\s/", '_', $_name)) != $name) {
                throw new coding_exception('The $name of a popup window shouldn\'t contain spaces - string modified. '. $name .' changed to '. $_name);
                $name = $_name;
            }
        } else {
            $name = 'popup';
        }

foreach ($this->params as $var => $val) {
            if (array_key_exists($var, $params)) {
                $this->params[$var] = $params[$var];
            }
        }

$attributes = array('url' => $url->out(false), 'name' => $name, 'options' => $this->get_js_options($params));
        if (!empty($params['fullscreen'])) {
            $attributes['fullscreen'] = 1;
        }
        parent::__construct($event, $this->jsfunction, $attributes);
    }

/**
     * Returns a string of concatenated option->value pairs used by JS to call the popup window,
     * based on this object's variables
     *
     * @return string String of option->value pairs for JS popup function.
     */
    public function get_js_options() {
        $jsoptions = '';

foreach ($this->params as $var => $val) {
            if (is_string($val) || is_int($val)) {
                $jsoptions .= "$var=$val,";
            } elseif (is_bool($val)) {
                $jsoptions .= ($val) ? "$var," : "$var=0,";
            }
        }

$jsoptions = substr($jsoptions, 0, strlen($jsoptions) - 1);

return $jsoptions;
    }
}

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