Sorter.php

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<?php

namespace Rsi\Fred\Controller\View\Html\Widget;

class Sorter extends Options{

  protected function renderOptions($value,$attribs = null){
    $options = $this->_widget->options;
    $available = $selected = [];
    foreach($options as $key => $descr) if(!in_array($key,$value ?: [])) $available[$key] = $descr;
    if($value) foreach($value as $key) if(array_key_exists($key,$options)) $selected[$key] = $options[$key];
    return $this->html->div(
      $this->html->fieldset(
        ($available ? $this->html->input(null,$attribs,'checkbox',$this->_name,$available) : null),
        ['class' => 'fred-available']
      ) .
      $this->html->div(null,null,'fred-actions') .
      $this->html->fieldset(
        ($selected ? $this->html->input($value,$attribs,'checkbox',$this->_name,$selected) : null),
        ['class' => 'fred-selected']
      ),
      null,
      'fred-options'
    );
  }

  protected function renderMinimal($value,$raw){
    $content = $this->renderHidden(json_encode($value),$raw);
    $options = $this->_widget->options;
    if($value) foreach($value as $key) if(array_key_exists($key,$options)) $content .= $this->html->_div($options[$key],null,'value');
    return $this->container($content,'minimal');
  }

}