<?php

class Qs_Form_Decorator_MultiText extends Zend_Form_Decorator_HtmlTag
{
    protected $_placement = 'APPEND';
    protected $_options;
    
    public function getOptions()
    {
        if (null === $this->_options) {
            $this->_options = Qs_Array::exclude($this->getElement()->getAttribs(), 'helper', 'options');
        }
        return $this->_options;
    }
    
    public function setOptions(array $options)
    {
        if (isset($options['options'])) {
            unset($options['options']);
        }
        foreach ($options as $key => $value) {
            $method = 'set' . ucfirst($key);
            if (method_exists($this, $method)) {
                $this->$method($value);
            } else {
                $this->_options[$key] = $value;
            }
        }
        return $this;
    }
    
    public function initRender()
    {
        $doc = Zend_Registry::get('doc');
        $doc->addScript('js/lib/form-element-multitext.js')
            ->addInitFunction(
                'Qs_Form_Element_MultiText.init', 
                array($this->getElement()->getId(), $this->_getScriptOptions())
            );
        return $this;
    }
    
    public function render($content)
    {
        // init options
        $this->getOptions();
        
        $tag       = $this->getTag();
        $element   = $this->getElement();
        $id        = $element->getId();
        $view      = $element->getView();
        $placement = $this->getPlacement();
        $noAttribs = $this->getOption('noAttribs');
        $this->removeOption('noAttribs');
        $this->removeOption('openOnly');
        $this->removeOption('closeOnly');

        $attribs = null;
        if (!$noAttribs) {
            $attribs = $this->getOptions();
        }
        if (!isset($attribs['id'])) {
            $attribs['id'] = $element->getId();
        }
        if (!isset($attribs['class'])) {
            $attribs['class'] = $element->getClass();
        }
        $elementAttribs = array(
            'class' => 'text',
            'id'    => $element->getId() . '-0',
        );
        $elementContent = $this->_getOpenTag('table', $attribs);
        $elementContent .= $this->_getOpenTag('tfoot');
        $elementContent .= $this->_getOpenTag('tr');
        $elementContent .= $this->_getOpenTag('td', array('colspan' => ($element->isNumering()) ? 3 : 2));
        $elementContent .= $this->_renderAddLink();
        $elementContent .= $this->_getCloseTag('td');
        $elementContent .= $this->_getCloseTag('tr');
        $elementContent .= $this->_getCloseTag('tfoot');
        $elementContent .= $this->_getOpenTag('tbody');
        $values = $element->getValue();
        if (empty($values)) {
            $values = array('');
        }
        $index = 1;
        foreach ($values as $value) {
            $elementContent .= $this->_getOpenTag('tr');
            if ($element->isNumering()) {
                $elementContent .= $this->_getOpenTag('td', array('class' => 'no'));
                $elementContent .= str_replace(
                    '%number%', 
                    '<span class = "row-number">' . ($index++) . '</span>', 
                    $element->getNumeringFormat()
                ); 
                $elementContent .= $this->_getCloseTag('td');
            }
            $elementContent .= $this->_getOpenTag('td', array('class' => 'element'));
            $elementAttribs['id'] = $element->getId() . '-' . $index;
            $elementContent .= $view->formText($element->getFullyQualifiedName(), $value, $elementAttribs);
            $elementContent .= $this->_getCloseTag('td');
            $elementContent .= $this->_getOpenTag('td', array('class' => 'options'));
            $elementContent .= $this->_renderOptions();
            $elementContent .= $this->_getCloseTag('td');
            $elementContent .= $this->_getCloseTag('tr');
        }
        $elementContent .= $this->_getCloseTag('tbody');
        $elementContent .= $this->_getCloseTag('table');
        
        switch ($placement) {
            case self::APPEND:
                return $content . $elementContent;
            case self::PREPEND:
                return $elementContent . $content;
        }
    }
    
    protected function _renderScriptOptions()
    {
        $options = $this->_getScriptOptions();
        return json_encode($options);
    }
    
    protected function _getScriptOptions()
    {
        $options = array(
            'name'           => $this->getElement()->getFullyQualifiedName(),
            'isNumering'     => $this->getElement()->isNumering(),
            'isSortable'     => $this->getElement()->isSortable(),
            'numeringFormat' => $this->getElement()->getNumeringFormat(),
        );
        if (!($itemName = $this->getElement()->getItemName())) {
            $itemName = 'row';
        }
        $options['itemName'] = $this->_getText($itemName);
        return $options;
    }
    
    protected function _getText($text)
    {
        if ($translator = $this->getElement()->getTranslator()) {
            return $translator->translate($text);
        }
        return $text;
    }
    
    protected function _renderLink($text, $attribs, $separator = '')
    {
        $content = $this->_getOpenTag('a', $attribs)
                 . $this->_getText($text)
                 . $this->_getCloseTag('a')
                 . '<span>' . $separator . '</span>';
        return $content;
    }
    
    protected function _renderOptions()
    {
        $id = $this->getElement()->getId();
        $content = '';
        if ($this->getElement()->isSortable()) {
            $content .= $this->_renderLink(
                'up', 
                array(
                    'class'   => 'up',
                    'href'    => '#',
                    'onclick' => 'return Qs_Form_Element_MultiText.up(this, \'' . $id . '\');'
                ),
                ' | '
            );
            $content .= $this->_renderLink(
                'down', 
                array(
                    'class'   => 'down',
                    'href'    => '#',
                    'onclick' => 'return Qs_Form_Element_MultiText.down(this, \'' . $id . '\');'
                ),
                ' | '
            );
        }
        $content .= $this->_renderLink(
            $this->getElement()->getDeleteText(), 
            array(
                'class'   => 'del',
                'href'    => '#',
                'onclick' => 'return Qs_Form_Element_MultiText.del(this, \'' . $id . '\');'
            )
        );
        return $content;
    }
    
    protected function _renderAddLink()
    {
        $id = $this->getElement()->getId();
        $content = $this->_getOpenTag(
            'a', 
            array(
                'id'      => $id . '-add', 
                'onclick' => "return Qs_Form_Element_MultiText.add('{$id}')", 
                'href'    => '#'
            )
        );
        $content .= $this->_getText($this->getElement()->getAddText());
        $content .= $this->_getCloseTag('a');
        return $content;
    }
}