Source of file MultiValueTextField.php

<?php

namespace Symbiote\MultiValueField\Fields;

use Symbiote\MultiValueField\ORM\FieldType\MultiValueField;

use SilverStripe\CMS\Controllers\ContentController;

use SilverStripe\Control\Controller;

use SilverStripe\View\HTML;

use SilverStripe\Forms\FormField;

use SilverStripe\View\Requirements;

use SilverStripe\Core\Convert;

/**

 * A text field for multivalued text entry

 *

 * @author Marcus Nyeholt <marcus@symbiote.com.au>

 */

class MultiValueTextField extends FormField

{

    const KEY_SEP = '__';

    protected $tag = 'input';

    public function Field($properties = [])

    {

        if (Controller::curr() instanceof ContentController) {

            Requirements::javascript('silverstripe/admin: thirdparty/jquery/jquery.js');

        }

        Requirements::javascript('symbiote/silverstripe-multivaluefield: client/javascript/multivaluefield.js');

        Requirements::css('symbiote/silverstripe-multivaluefield: client/css/multivaluefield.css');

        $name   = $this->name.'[]';

        $fields = [];

        $attributes = [

            'type' => 'text',

            'class' => 'text mvtextfield mventryfield '.($this->extraClass() ? $this->extraClass() : ''),

            // 'id' => $this->id(),

            'name' => $name,

            // 'value' => $this->Value(),

        ];

        if ($this->disabled) {

            $attributes['disabled'] = 'disabled';

        }

        $fieldAttr = $attributes;

        if ($this->value) {

            foreach ($this->value as $i => $v) {

                $fieldAttr['id']    = $this->id().MultiValueTextField::KEY_SEP.$i;

                $fieldAttr['value'] = $v;

                if ($this->readonly) {

                    unset($fieldAttr['value']);

                    $fields[] = $this->createReadonlyInput($fieldAttr, $v);

                } else {

                    $fields[] = $this->createInput($fieldAttr, $v);

                }

            }

        }

        if (!$this->readonly) {

            $fields[] = $this->createInput($attributes);

        }

        if (count($fields)) {

            return '<ul id="'.$this->id().'" class="multivaluefieldlist '.$this->extraClass().'"><li>'.implode(

                '</li><li>',

                $fields

            ).'</li></ul>';

        } else {

            return '<div id="'.$this->id().'" class="multivaluefieldlist '.$this->extraClass().'"></div>';

        }

    }

    public function createReadonlyInput($attributes, $value)

    {

        return HTML::createTag('span', $attributes, Convert::raw2xml($value));

    }

    public function createInput($attributes, $value = null)

    {

        $attributes['value'] = $value;

        return HTML::createTag($this->tag, $attributes);

    }

    public function performReadonlyTransformation()

    {

        $new = clone $this;

        $new->setReadonly(true);

        return $new;

    }

    public function setValue($v, $data = null)

    {

        if (is_array($v)) {

            // we've been set directly via the post - lets prune any empty values

            foreach ($v as $key => $val) {

                if (!strlen($val)) {

                    unset($v[$key]);

                }

            }

        }

        if ($v instanceof MultiValueField) {

            $v = $v->getValues();

        }

        if (!is_array($v)) {

            $v = [];

        }

        parent::setValue($v);

    }

    public function setTag($tag)

    {

        $this->tag = $tag;

        return $this;

    }

}