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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/>.
/**
* url type form element
*
* Contains HTML class for a url type element
*
* @package core_form
* @copyright 2009 Dongsheng Cai <dongsheng@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once("HTML/QuickForm/text.php");
require_once('templatable_form_element.php');
/**
* url type form element
*
* HTML class for a url type element
* @package core_form
* @category form
* @copyright 2009 Dongsheng Cai <dongsheng@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class MoodleQuickForm_url extends HTML_QuickForm_text implements templatable {
use templatable_form_element {
export_for_template as export_for_template_base;
}
/** @var string html for help button, if empty then no help */
var $_helpbutton='';
/** @var bool if true label will be hidden */
var $_hiddenLabel=false;
/** @var string the unique id of the filepicker, if enabled.*/
protected $filepickeruniqueid;
/**
* Constructor
*
* @param string $elementName Element name
* @param mixed $elementLabel Label(s) for an element
* @param mixed $attributes Either a typical HTML attribute string or an associative array.
* @param array $options data which need to be posted.
*/
public function __construct($elementName=null, $elementLabel=null, $attributes=null, $options=null) {
global $CFG;
require_once("$CFG->dirroot/repository/lib.php");
$options = (array)$options;
foreach ($options as $name=>$value) {
$this->_options[$name] = $value;
}
if (!isset($this->_options['usefilepicker'])) {
$this->_options['usefilepicker'] = true;
}
parent::__construct($elementName, $elementLabel, $attributes);
$this->_type = 'url';
}
/**
* Old syntax of class constructor. Deprecated in PHP7.
*
* @deprecated since Moodle 3.1
*/
public function MoodleQuickForm_url($elementName=null, $elementLabel=null, $attributes=null, $options=null) {
debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);
self::__construct($elementName, $elementLabel, $attributes, $options);
}
/**
* Sets label to be hidden
*
* @param bool $hiddenLabel sets if label should be hidden
*/
function setHiddenLabel($hiddenLabel){
$this->_hiddenLabel = $hiddenLabel;
}
/**
* Returns HTML for this form element.
*
* @return string
*/
function toHtml(){
$id = $this->_attributes['id'];
$elname = $this->_attributes['name'];
// Add the class at the last minute.
if ($this->get_force_ltr()) {
if (!isset($this->_attributes['class'])) {
$this->_attributes['class'] = 'text-ltr';
} else {
$this->_attributes['class'] .= ' text-ltr';
}
}
if ($this->_hiddenLabel) {
$this->_generateId();
$str = '<label class="accesshide" for="'.$this->getAttribute('id').'" >'.
$this->getLabel().'</label>'.parent::toHtml();
} else {
$str = parent::toHtml();
}
if (empty($this->_options['usefilepicker'])) {
return $str;
}
// Print out file picker.
$str .= $this->getFilePickerHTML();
$str = '<div id="url-wrapper-' . $this->get_filepicker_unique_id() . '">' . $str . '</div>';
return $str;
}
public function getFilePickerHTML() {
global $PAGE, $OUTPUT;
$str = '';
$clientid = $this->get_filepicker_unique_id();
$args = new stdClass();
$args->accepted_types = '*';
$args->return_types = FILE_EXTERNAL;
$args->context = $PAGE->context;
$args->client_id = $clientid;
$args->env = 'url';
$fp = new file_picker($args);
$options = $fp->options;
if (count($options->repositories) > 0) {
$straddlink = get_string('choosealink', 'repository');
$str .= <<<EOD
<button type="button" id="filepicker-button-js-{$clientid}" class="visibleifjs btn btn-secondary">
$straddlink
</button>
EOD;
}
// print out file picker
$str .= $OUTPUT->render($fp);
$module = array('name'=>'form_url', 'fullpath'=>'/lib/form/url.js', 'requires'=>array('core_filepicker'));
$PAGE->requires->js_init_call('M.form_url.init', array($options), true, $module);
return $str;
}
/**
* get html for help button
*
* @return string html for help button
*/
function getHelpButton(){
return $this->_helpbutton;
}
/**
* Slightly different container template when frozen. Don't want to use a label tag
* with a for attribute in that case for the element label but instead use a div.
* Templates are defined in renderer constructor.
*
* @return string
*/
function getElementTemplateType(){
if ($this->_flagFrozen){
return 'static';
} else {
return 'default';
}
}
public function export_for_template(renderer_base $output) {
$context = $this->export_for_template_base($output);
$context['filepickerhtml'] = !empty($this->_options['usefilepicker']) ? $this->getFilePickerHTML() : '';
// This will conditionally wrap the element in a div which can be accessed in the DOM using the unique id,
// and allows the filepicker callback to find its respective url field, if multiple URLs are used.
if ($this->_options['usefilepicker']) {
$context['filepickerclientid'] = $this->get_filepicker_unique_id();
}
return $context;
}
/**
* Get force LTR option.
*
* @return bool
*/
public function get_force_ltr() {
return true;
}
/**
* Returns the unique id of the file picker associated with this url element, setting it in the process if not set.
*
* @return string the unique id of the file picker.
*/
protected function get_filepicker_unique_id() : string {
if (empty($this->filepickeruniqueid)) {
$this->filepickeruniqueid = uniqid();
}
return $this->filepickeruniqueid;
}
}