| Server IP : 134.29.175.74 / Your IP : 216.73.216.160 Web Server : nginx/1.10.2 System : Windows NT CST-WEBSERVER 10.0 build 19045 (Windows 10) i586 User : Administrator ( 0) PHP Version : 7.1.0 Disable Function : NONE MySQL : OFF | cURL : ON | WGET : OFF | Perl : OFF | Python : OFF | Sudo : OFF | Pkexec : OFF Directory : C:/nginx/html/Student/JimMartinson/Lab12/drupal/core/lib/Drupal/Core/Render/Element/ |
Upload File : |
<?php
namespace Drupal\Core\Render\Element;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Render\Element;
/**
* Provides a form element for a submit button with an image.
*
* @FormElement("image_button")
*/
class ImageButton extends Submit {
/**
* {@inheritdoc}
*/
public function getInfo() {
$info = parent::getInfo();
unset($info['name']);
return [
'#return_value' => TRUE,
'#has_garbage_value' => TRUE,
'#src' => NULL,
'#theme_wrappers' => ['input__image_button'],
] + $info;
}
/**
* {@inheritdoc}
*/
public static function valueCallback(&$element, $input, FormStateInterface $form_state) {
if ($input !== FALSE) {
if (!empty($input)) {
// If we're dealing with Mozilla or Opera, we're lucky. It will
// return a proper value, and we can get on with things.
return $element['#return_value'];
}
else {
// Unfortunately, in IE we never get back a proper value for THIS
// form element. Instead, we get back two split values: one for the
// X and one for the Y coordinates on which the user clicked the
// button. We'll find this element in the #post data, and search
// in the same spot for its name, with '_x'.
$input = $form_state->getUserInput();
foreach (explode('[', $element['#name']) as $element_name) {
// chop off the ] that may exist.
if (substr($element_name, -1) == ']') {
$element_name = substr($element_name, 0, -1);
}
if (!isset($input[$element_name])) {
if (isset($input[$element_name . '_x'])) {
return $element['#return_value'];
}
return NULL;
}
$input = $input[$element_name];
}
return $element['#return_value'];
}
}
}
/**
* {@inheritdoc}
*/
public static function preRenderButton($element) {
$element['#attributes']['type'] = 'image';
Element::setAttributes($element, ['id', 'name', 'value']);
$element['#attributes']['src'] = file_url_transform_relative(file_create_url($element['#src']));
if (!empty($element['#title'])) {
$element['#attributes']['alt'] = $element['#title'];
$element['#attributes']['title'] = $element['#title'];
}
$element['#attributes']['class'][] = 'image-button';
if (!empty($element['#button_type'])) {
$element['#attributes']['class'][] = 'image-button--' . $element['#button_type'];
}
$element['#attributes']['class'][] = 'js-form-submit';
$element['#attributes']['class'][] = 'form-submit';
if (!empty($element['#attributes']['disabled'])) {
$element['#attributes']['class'][] = 'is-disabled';
}
return $element;
}
}