Source of file MultiValueDropdownField.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\View\Requirements;

use SilverStripe\Core\Convert;

/**

 * A multivalued field that uses dropdown boxes for selecting the value for each

 *

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

 */

class MultiValueDropdownField extends MultiValueTextField

{

    protected $source;

    public function __construct($name, $title = null, $source = [], $value = null)

    {

        parent::__construct($name, ($title === null) ? $name : $title, $value);

        $this->source = $source;

    }

    /**

     * @return array

     */

    public function getSource()

    {

        return $this->source;

    }

    /**

     * @param array $source

     * @return $this

     */

    public function setSource(array $source)

    {

        $this->source = $source;

        return $this;

    }

    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 = [];

        if ($this->value) {

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

                if ($this->readonly) {

                    $fieldAttr = [

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

                        'id' => $this->id().MultiValueTextField::KEY_SEP.$i,

                        'name' => $name,

                        'tabindex' => $this->getAttribute('tabindex')

                    ];

                    $fields[]  = HTML::createTag('span', $fieldAttr, Convert::raw2xml($v));

                } else {

                    $fields[] = $this->createSelectList($i, $name, $this->source, $v);

                }

            }

        } else {

            $i = -1;

        }

        if (!$this->readonly) {

            $fields[] = $this->createSelectList($i + 1, $name, $this->source);

        }

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

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

    }

    public function Type()

    {

        return 'dropdown multivaluedropdown';

    }

    protected function createSelectList($number, $name, $values, $selected = '')

    {

        $options = HTML::createTag(

                'option', [

                'selected' => $selected == '' ? 'selected' : '',

                'value' => ''

                ], ''

        );

        foreach ($values as $index => $title) {

            $attrs = ['value' => $index];

            if ($index == $selected) {

                $attrs['selected'] = 'selected';

            }

            $options .= HTML::createTag('option', $attrs, Convert::raw2xml($title));

        }

        $attrs = [

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

            'id' => $this->id().MultiValueTextField::KEY_SEP.$number,

            'name' => $name,

            'tabindex' => $this->getAttribute('tabindex')

        ];

        if ($this->disabled) $attrs['disabled'] = 'disabled';

        return HTML::createTag('select', $attrs, $options);

    }

}