SproutCMS

source of /sprout/Helpers/LinkSpecExternal.php

<?php
/*
 * Copyright (C) 2017 Karmabunny Pty Ltd.
 *
 * This file is a part of SproutCMS.
 *
 * SproutCMS is free software: you can redistribute it and/or modify it under the terms
 * of the GNU General Public License as published by the Free Software Foundation, either
 * version 2 of the License, or (at your option) any later version.
 *
 * For more information, visit <http://getsproutcms.com>.
 */
 
namespace Sprout\Helpers;
 
class LinkSpecExternal extends LinkSpec
{
 
    /**
    * Get the URL for a given link
    **/
    public function getUrl($specdata)
    {
        return $specdata;
    }
 
 
    /**
    * Get any extra html attributes to use for a given link
    * @return array
    **/
    public function getAttrs($specdata)
    {
        return array(
            'target' => '_blank',
        );
    }
 
 
    /**
    * Get the HTML to use for editing a given linkspec
    *
    * The HTML should create a HTML field with the name $field_name
    * If there is a spec currently being edited, the specdata will
    * be provided in $curr_specdata
    **/
    public function getEditForm($field_name, $curr_specdata)
    {
        Form::setData([$field_name => $curr_specdata]);
        Form::nextFieldDetails('External URL', true);
        return Form::text($field_name, ['placeholder' => 'e.g. http://www.example.com']);
    }
 
 
    /**
    * Validate the submission, for instances where certain constraints apply
    **/
    public function isValid($specdata)
    {
        if (!preg_match('%^(https?://)([a-z0-9-].?)+(:[0-9]+)?(/.*)?$%i', $specdata)) {
            return new AdminError('External links must begin with "http://" or "https://"');
        }
 
        return true;
    }
 
}