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<?php
/**
* @link https://github.com/himiklab/yii2-recaptcha-widget
* @copyright Copyright (c) 2014-2019 HimikLab
* @license http://opensource.org/licenses/MIT MIT
*/
namespace himiklab\yii2\recaptcha;
use Yii;
use yii\base\InvalidConfigException;
use yii\helpers\Html;
use yii\widgets\InputWidget;
/**
* Yii2 Google reCAPTCHA v2 widget.
*
* For example:
*
* ```php
* <?= $form->field($model, 'reCaptcha')->widget(
* ReCaptcha::className(),
* [
* 'siteKey' => 'your siteKey' // unnecessary is reCaptcha component was set up
* ]
* ) ?>
* ```
*
* or
*
* ```php
* <?= ReCaptcha::widget([
* 'name' => 'reCaptcha',
* 'siteKey' => 'your siteKey', // unnecessary is reCaptcha component was set up
* 'widgetOptions' => ['class' => 'col-sm-offset-3']
* ]) ?>
* ```
*
* @see https://developers.google.com/recaptcha
* @author HimikLab
* @package himiklab\yii2\recaptcha
*/
class ReCaptcha2 extends InputWidget
{
const THEME_LIGHT = 'light';
const THEME_DARK = 'dark';
const TYPE_IMAGE = 'image';
const TYPE_AUDIO = 'audio';
const SIZE_NORMAL = 'normal';
const SIZE_COMPACT = 'compact';
/** @var string Your sitekey. */
public $siteKey;
/**
* @var string Use [[ReCaptchaConfig::JS_API_URL_ALTERNATIVE]] when [[ReCaptchaConfig::JS_API_URL_DEFAULT]]
* is not accessible.
*/
public $jsApiUrl;
/** @var string The color theme of the widget. [[THEME_LIGHT]] (default) or [[THEME_DARK]] */
public $theme;
/** @var string The type of CAPTCHA to serve. [[TYPE_IMAGE]] (default) or [[TYPE_AUDIO]] */
public $type;
/** @var string The size of the widget. [[SIZE_NORMAL]] (default) or [[SIZE_COMPACT]] */
public $size;
/** @var integer The tabindex of the widget */
public $tabIndex;
/** @var string Your JS callback function that's executed when the user submits a successful reCAPTCHA response. */
public $jsCallback;
/**
* @var string Your JS callback function that's executed when the recaptcha response expires and the user
* needs to solve a new CAPTCHA.
*/
public $jsExpiredCallback;
/** @var string Your JS callback function that's executed when reCAPTCHA encounters an error (usually network
* connectivity) and cannot continue until connectivity is restored. If you specify a function here, you are
* responsible for informing the user that they should retry.
*/
public $jsErrorCallback;
/** @var string */
public $configComponentName = 'reCaptcha';
/** @var array Additional html widget options, such as `class`. */
public $widgetOptions = [];
public function __construct($siteKey = null, $jsApiUrl = null, $config = [])
{
if ($siteKey && !$this->siteKey) {
$this->siteKey = $siteKey;
}
if ($jsApiUrl && !$this->jsApiUrl) {
$this->jsApiUrl = $jsApiUrl;
}
parent::__construct($config);
}
public function init()
{
parent::init();
$this->configComponentProcess();
}
public function run()
{
parent::run();
$view = $this->view;
$arguments = \http_build_query([
'hl' => $this->getLanguageSuffix(),
'render' => 'explicit',
'onload' => 'recaptchaOnloadCallback',
]);
$view->registerJsFile(
$this->jsApiUrl . '?' . $arguments,
['position' => $view::POS_END, 'async' => true, 'defer' => true]
);
$view->registerJs(
<<<'JS'
function recaptchaOnloadCallback() {
"use strict";
jQuery(".g-recaptcha").each(function () {
const reCaptcha = jQuery(this);
if (reCaptcha.data("recaptcha-client-id") === undefined) {
const recaptchaClientId = grecaptcha.render(reCaptcha.attr("id"), {
"callback": function (response) {
if (reCaptcha.data("form-id") !== "") {
jQuery("#" + reCaptcha.data("input-id"), "#" + reCaptcha.data("form-id")).val(response)
.trigger("change");
} else {
jQuery("#" + reCaptcha.data("input-id")).val(response).trigger("change");
}
if (reCaptcha.attr("data-callback")) {
eval("(" + reCaptcha.attr("data-callback") + ")(response)");
}
},
"expired-callback": function () {
if (reCaptcha.data("form-id") !== "") {
jQuery("#" + reCaptcha.data("input-id"), "#" + reCaptcha.data("form-id")).val("");
} else {
jQuery("#" + reCaptcha.data("input-id")).val("");
}
if (reCaptcha.attr("data-expired-callback")) {
eval("(" + reCaptcha.attr("data-expired-callback") + ")()");
}
},
});
reCaptcha.data("recaptcha-client-id", recaptchaClientId);
}
});
}
JS
, $view::POS_END);
if (Yii::$app->request->isAjax) {
$view->registerJs(<<<'JS'
if (typeof grecaptcha !== "undefined") {
recaptchaOnloadCallback();
}
JS
, $view::POS_END
);
}
$this->customFieldPrepare();
echo Html::tag('div', '', $this->buildDivOptions());
}
protected function getReCaptchaId()
{
if (isset($this->widgetOptions['id'])) {
return $this->widgetOptions['id'];
}
if ($this->hasModel()) {
return Html::getInputId($this->model, $this->attribute);
}
return $this->id . '-' . $this->inputNameToId($this->name);
}
protected function getLanguageSuffix()
{
$currentAppLanguage = Yii::$app->language;
$langsExceptions = ['zh-CN', 'zh-TW', 'zh-TW'];
if (\strpos($currentAppLanguage, '-') === false) {
return $currentAppLanguage;
}
if (\in_array($currentAppLanguage, $langsExceptions)) {
return $currentAppLanguage;
}
return \substr($currentAppLanguage, 0, \strpos($currentAppLanguage, '-'));
}
protected function customFieldPrepare()
{
$inputId = $this->getReCaptchaId();
if ($this->hasModel()) {
$inputName = Html::getInputName($this->model, $this->attribute);
} else {
$inputName = $this->name;
}
$options = $this->options;
$options['id'] = $inputId;
echo Html::input('hidden', $inputName, null, $options);
}
protected function buildDivOptions()
{
$divOptions = [
'class' => 'g-recaptcha',
'data-sitekey' => $this->siteKey
];
$divOptions += $this->widgetOptions;
if ($this->jsCallback) {
$divOptions['data-callback'] = $this->jsCallback;
}
if ($this->jsExpiredCallback) {
$divOptions['data-expired-callback'] = $this->jsExpiredCallback;
}
if ($this->jsErrorCallback) {
$divOptions['data-error-callback'] = $this->jsErrorCallback;
}
if ($this->theme) {
$divOptions['data-theme'] = $this->theme;
}
if ($this->type) {
$divOptions['data-type'] = $this->type;
}
if ($this->size) {
$divOptions['data-size'] = $this->size;
}
if ($this->tabIndex) {
$divOptions['data-tabindex'] = $this->tabIndex;
}
if (isset($this->widgetOptions['class'])) {
$divOptions['class'] = "{$divOptions['class']} {$this->widgetOptions['class']}";
}
$divOptions['data-input-id'] = $this->getReCaptchaId();
if ($this->field && $this->field->form) {
if ($this->field->form->options['id']) {
$divOptions['data-form-id'] = $this->field->form->options['id'];
} else {
$divOptions['data-form-id'] = $this->field->form->id;
}
} else {
$divOptions['data-form-id'] = '';
}
$divOptions['id'] = $this->getReCaptchaId() . '-recaptcha' .
($divOptions['data-form-id'] ? ('-' . $divOptions['data-form-id']) : '');
return $divOptions;
}
protected function inputNameToId($name)
{
return \str_replace(['[]', '][', '[', ']', ' ', '.'], ['', '-', '-', '', '-', '-'], \strtolower($name));
}
protected function configComponentProcess()
{
/** @var ReCaptchaConfig $reCaptchaConfig */
$reCaptchaConfig = Yii::$app->get($this->configComponentName, false);
if (!$this->siteKey) {
if ($reCaptchaConfig && $reCaptchaConfig->siteKeyV2) {
$this->siteKey = $reCaptchaConfig->siteKeyV2;
} else {
throw new InvalidConfigException('Required `siteKey` param isn\'t set.');
}
}
if (!$this->jsApiUrl) {
if ($reCaptchaConfig && $reCaptchaConfig->jsApiUrl) {
$this->jsApiUrl = $reCaptchaConfig->jsApiUrl;
} else {
$this->jsApiUrl = ReCaptchaConfig::JS_API_URL_DEFAULT;
}
}
}
}
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