| 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 an action button form element.
*
* When the button is pressed, the form will be submitted to Drupal, where it is
* validated and rebuilt. The submit handler is not invoked.
*
* Properties:
* - #limit_validation_errors: An array of form element keys that will block
* form submission when validation for these elements or any child elements
* fails. Specify an empty array to suppress all form validation errors.
* - #value: The text to be shown on the button.
*
*
* Usage Example:
* @code
* $form['actions']['preview'] = array(
* '#type' => 'button',
* '#value' => $this->t('Preview'),
* );
* @endcode
*
* @see \Drupal\Core\Render\Element\Submit
*
* @FormElement("button")
*/
class Button extends FormElement {
/**
* {@inheritdoc}
*/
public function getInfo() {
$class = get_class($this);
return [
'#input' => TRUE,
'#name' => 'op',
'#is_button' => TRUE,
'#executes_submit_callback' => FALSE,
'#limit_validation_errors' => FALSE,
'#process' => [
[$class, 'processButton'],
[$class, 'processAjaxForm'],
],
'#pre_render' => [
[$class, 'preRenderButton'],
],
'#theme_wrappers' => ['input__submit'],
];
}
/**
* Processes a form button element.
*/
public static function processButton(&$element, FormStateInterface $form_state, &$complete_form) {
// If this is a button intentionally allowing incomplete form submission
// (e.g., a "Previous" or "Add another item" button), then also skip
// client-side validation.
if (isset($element['#limit_validation_errors']) && $element['#limit_validation_errors'] !== FALSE) {
$element['#attributes']['formnovalidate'] = 'formnovalidate';
}
return $element;
}
/**
* Prepares a #type 'button' render element for input.html.twig.
*
* @param array $element
* An associative array containing the properties of the element.
* Properties used: #attributes, #button_type, #name, #value. The
* #button_type property accepts any value, though core themes have CSS that
* styles the following button_types appropriately: 'primary', 'danger'.
*
* @return array
* The $element with prepared variables ready for input.html.twig.
*/
public static function preRenderButton($element) {
$element['#attributes']['type'] = 'submit';
Element::setAttributes($element, ['id', 'name', 'value']);
$element['#attributes']['class'][] = 'button';
if (!empty($element['#button_type'])) {
$element['#attributes']['class'][] = '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;
}
}