class-gravityview-field-email.php

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<?php
/**
 * @file class-gravityview-field-email.php
 * @package GravityView
 * @subpackage includes\fields
 */

/**
 * Add custom options for email fields
 */
class GravityView_Field_Email extends GravityView_Field {

    var $name = 'email';

    var $is_searchable = true;

    var $search_operators = array( 'is', 'isnot', 'contains', 'starts_with', 'ends_with' );

    var $_gf_field_class_name = 'GF_Field_Email';

    var $group = 'advanced';

    var $icon = 'dashicons-email';

    public function __construct() {
        $this->label = esc_html__( 'Email', 'gk-gravityview' );
        parent::__construct();
    }

    public function field_options( $field_options, $template_id, $field_id, $context, $input_type, $form_id ) {

        // It makes no sense to use this as the link.
        unset( $field_options['show_as_link'] );

        if( 'edit' === $context ) {
            return $field_options;
        }

        $email_options = array(
            'emailmailto' => array(
                'type' => 'checkbox',
                'value' => true,
                'label' => __( 'Link the Email Address', 'gk-gravityview' ),
                'desc' => __( 'Clicking the link will generate a new email.', 'gk-gravityview' ),
                'group' => 'field',
            ),
            'emailsubject' => array(
                'type' => 'text',
                'label' => __( 'Email Subject', 'gk-gravityview' ),
                'value' => '',
                'desc' => __( 'Set the default email subject line.', 'gk-gravityview' ),
                'merge_tags' => 'force',
                'requires' => 'emailmailto',
                'group' => 'field',
            ),
            'emailbody' => array(
                'type' => 'textarea',
                'label' => __( 'Email Body', 'gk-gravityview' ),
                'value' => '',
                'desc' => __( 'Set the default email content.', 'gk-gravityview' ),
                'merge_tags' => 'force',
                'class' => 'widefat code',
                'requires' => 'emailmailto',
                'group' => 'field',
            ),
            'emailencrypt' => array(
                'type' => 'checkbox',
                'value' => true,
                'label' => __( 'Encrypt Email Address', 'gk-gravityview' ),
                'desc' => __( 'Make it harder for spammers to get email addresses from your entries. Email addresses will not be visible with Javascript disabled.', 'gk-gravityview' ),
                'group' => 'advanced',
                'priority' => 100,
            ),
        );

        return $email_options + $field_options;
    }

}

new GravityView_Field_Email;