<?php

namespace Artmark\Forms;

/**
 * Description of Label
 *
 * @author Andrey Pokidov <pokidov@e-traffic.ru>
 */
class Label extends AbstractVisibleHtml
{
    /**
     * Поле, к которому привязана текстовая метка
     * @var AbstractField
     */
    private $field = null;
    
    private $text = '';
    
    public function __construct(AbstractField $field)
    {
        $this->field = $field;
    }
    
    /**
     * Текст метки поля
     * @return string
     */
    public function text()
    {
        return $this->text;
    }
    
    /**
     * Устанавливает новый текст для метки поля
     * @param string $newText
     * @throws FieldException
     */
    public function setText($newText)
    {
        if (!is_string($newText) && !is_numeric($newText)) {
            throw new FieldException('Incorrect field label text: `' . strval($newText) . '`');
        }
        
        $this->text = Utils::cleanString($newText);
    }
    
    public function getAssociativeAttributes()
    {
        $attributes = parent::getAssociativeAttributes();
        
        if ($this->field->hasId()) {
            $attributes['for'] = $this->field->idWithFormPrefix();
        }
        else {
            $attributes['for'] = $this->field->nameWithFormPrefix();
        }
        
        return $attributes;
    }
}