first commit

wp-content/plugins/mailchimp-for-wp/integrations/ninja-forms-2/admin-before.php

@@ -0,0 +1,3 @@
+<p>
+    <?php echo __('To integrate with Ninja Forms, add the "Mailchimp" field to your Ninja Forms forms.', 'mailchimp-for-wp'); ?>
+</p>

wp-content/plugins/mailchimp-for-wp/integrations/ninja-forms-2/class-ninja-forms.php

@@ -0,0 +1,155 @@
+<?php
+
+defined('ABSPATH') or exit;
+
+/**
+ * Class MC4WP_Ninja_Forms_v2_Integration
+ *
+ * @ignore
+ */
+class MC4WP_Ninja_Forms_V2_Integration extends MC4WP_Integration
+{
+    /**
+     * @var string
+     */
+    public $name = 'Ninja Forms (v2)';
+
+    /**
+     * @var string
+     */
+    public $description = 'Subscribe visitors from your Ninja Forms forms.';
+
+
+    /**
+     * Add hooks
+     */
+    public function add_hooks()
+    {
+        add_action('init', array( $this, 'register_field' ));
+    }
+
+    public function register_field()
+    {
+        $args = array(
+            'name'              => __('Mailchimp', 'ninja-forms'),
+            'edit_function'     => '',
+            'display_function'  => 'ninja_forms_field_checkbox_display',
+            'group'             => 'standard_fields',
+            'sidebar'           => 'template_fields',
+            'edit_label'        => true,
+            'edit_label_pos'    => true,
+            'label_pos_options' => array(
+                array(
+                    'name'  => __('Left of Element', 'ninja-forms'),
+                    'value' => 'left',
+                ),
+                array(
+                    'name'  => __('Above Element', 'ninja-forms'),
+                    'value' => 'above',
+                ),
+                array(
+                    'name'  => __('Below Element', 'ninja-forms'),
+                    'value' => 'below',
+                ),
+                array(
+                    'name'  => __('Right of Element', 'ninja-forms'),
+                    'value' => 'right',
+                ),
+            ),
+            'edit_placeholder'  => false,
+            'edit_req'          => true,
+            'edit_custom_class' => true,
+            'edit_help'         => true,
+            'edit_desc'         => true,
+            'edit_meta'         => false,
+            'process'           => array( $this, 'process' ),
+            'default_label'     => $this->options['label'],
+            'edit_options'      => array(
+                array(
+                    'type'    => 'select', //What type of input should this be?
+                    'options' => array(
+                        array(
+                            'name'  => __('Unchecked', 'ninja-forms'),
+                            'value' => 'unchecked',
+                        ),
+                        array(
+                            'name'  => __('Checked', 'ninja-forms'),
+                            'value' => 'checked',
+                        ),
+                    ),
+                    'name'    => 'default_value', //What should it be named. This should always be a programmatic name, not a label.
+                    'label'   => __('Default Value', 'ninja-forms'),
+                    'class'   => 'widefat', //Additional classes to be added to the input element.
+                ),
+            ),
+        );
+
+        ninja_forms_register_field('mc4wp-subscribe', $args);
+    }
+
+    /**
+     * Process form submissions
+     *
+     * @param int $id
+     * @param string $value
+     *
+     * @return bool|string
+     */
+    public function process($id, $value)
+    {
+
+        // field was not checked
+        if ($value !== 'checked') {
+            return false;
+        }
+
+        /**
+         * @var Ninja_Forms_Processing $ninja_forms_processing
+         */
+        global $ninja_forms_processing;
+
+        // generate an array of field label => field value
+        $fields = $ninja_forms_processing->get_all_submitted_fields();
+
+        $pretty = array();
+        foreach ($fields as $field_id => $field_value) {
+            // try admin label for "mc4wp-" prefixed fields, otherwise use general label
+            $label = $ninja_forms_processing->get_field_setting($field_id, 'admin_label');
+            if (empty($label) || stripos($label, 'mc4wp-') !== 0) {
+                $label = $ninja_forms_processing->get_field_setting($field_id, 'label');
+            }
+
+            $pretty[ $label ] = $field_value;
+        }
+
+        // guess mailchimp variables
+        $parser = new MC4WP_Field_Guesser($pretty);
+        $data   = $parser->combine(array( 'guessed', 'namespaced' ));
+
+        // do nothing if no email was found
+        if (empty($data['EMAIL'])) {
+            $this->get_log()->warning(sprintf('%s > Unable to find EMAIL field.', $this->name));
+            return false;
+        }
+
+        return $this->subscribe($data, $ninja_forms_processing->get_form_ID());
+    }
+
+
+    /**
+     * @return bool
+     */
+    public function is_installed()
+    {
+        return function_exists('ninja_forms_register_field');
+    }
+
+    /**
+     * @since 3.0
+     * @return array
+     */
+    public function get_ui_elements()
+    {
+        return array_diff(parent::get_ui_elements(), array( 'enabled', 'implicit', 'precheck', 'css', 'label' ));
+    }
+}