<?php

class App_FormBuilder_Element_Text_Obj extends App_FormBuilder_Element_Obj
{
    const WIDTH_GAP = 10;            // width gap for rendering element container (include padding, margin, border, etc.
    protected $_typeId = 1;
    const PROPERTY_WIDTH_ID = 12;
    protected $_elementType = 'text';

    public function saveDimensions($width)
    {
        $this->_savePropertyValue(self::PROPERTY_WIDTH_ID, $width);

        return $this;
    }

    public function prepareProperties(&$data)
    {
        if ($data['label']) {
            if ($data['labelPlacement'] == 'top') {
                $data['totalWidth'] = max($data['width'], $data['labelWidth']) + self::WIDTH_GAP;
            } else {
                $data['totalWidth'] = $data['width'] + $data['labelWidth'] + self::WIDTH_GAP;
            }
        } else {
            $data['totalWidth'] = $data['width'] + self::WIDTH_GAP;
        }
        $data['propertyName'] = $data['name'];
        return $this;
    }

    public function bindField(Qs_Form $form)
    {
        parent::bindField($form);
        if ('y' === $this->getData('isDecimal')) {
            $prefix = $this->getData('formType') != App_FormBuilder_Obj::DEFAULT_FORM_TYPE
                ? $this->getData('formType')
                : '';
            $form->getElement($prefix . $this->getData('name'))
                ->addValidator('Float')
                ->addFilter('Callback', array('callback' => array($this, 'roundValue')));
        }
        return $this;
    }

    public function roundValue($value)
    {
        $validator = new Zend_Validate_Float();
        if (!$validator->isValid($value)) {
            return $value;
        }
        return round($value, 4);
    }
}