add the block for create webhook button #229

Block/Adminhtml/System/Config/CreateWebhook.php

@@ -0,0 +1,76 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: gonzalo
+ * Date: 3/12/18
+ * Time: 2:12 PM
+ */
+namespace Ebizmarts\MailChimp\Block\Adminhtml\System\Config;
+
+class CreateWebhook extends \Magento\Config\Block\System\Config\Form\Field
+{
+    /**
+     * @var \Ebizmarts\MailChimp\Helper\Data
+     */
+    private $_helper;
+
+    /**
+     * ResetErrors constructor.
+     * @param \Magento\Backend\Block\Template\Context $context
+     * @param \Ebizmarts\MailChimp\Helper\Data $helper
+     * @param array $data
+     */
+    public function __construct(
+        \Magento\Backend\Block\Template\Context $context,
+        \Ebizmarts\MailChimp\Helper\Data $helper,
+        array $data = []
+    ) {
+
+        $this->_helper = $helper;
+        parent::__construct($context, $data);
+    }
+
+    protected function _construct()
+    {
+        parent::_construct();
+        $this->setTemplate('system/config/createwebhook.phtml');
+    }
+
+    protected function _getElementHtml(\Magento\Framework\Data\Form\Element\AbstractElement $element)
+    {
+        $originalData = $element->getOriginalData();
+        $this->addData(
+            [
+                'button_label' => __($originalData['button_label']),
+                'button_url' => $this->getAjaxCheckUrl(),
+                'html_id' => $element->getHtmlId(),
+            ]
+        );
+        return $this->_toHtml();
+    }
+
+    public function getButtonHtml(\Magento\Framework\Data\Form\Element\AbstractElement $element)
+    {
+
+
+        $originalData = $element->getOriginalData();
+        $label = $originalData['button_label'];
+        $this->addData([
+            'button_label' => __($label),
+            'button_url'   => $this->getAjaxCreateWebhookUrl(),
+            'html_id' => $element->getHtmlId(),
+        ]);
+        return $this->_toHtml();
+    }
+    public function getAjaxCreateWebhookUrl()
+    {
+        $params = $this->getRequest()->getParams();
+        $scope = [];
+        if (isset($params['website'])) {
+            $scope = ['website'=>$params['website']];
+        } elseif (isset($params['store'])) {
+            $scope = ['store'=>$params['store']];
+        }
+        return $this->_urlBuilder->getUrl('mailchimp/ecommerce/CreateWebhook', $scope);
+    }
+}