256 Zeilen
7,3 KiB
PHP
256 Zeilen
7,3 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Form
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* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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/** Zend_Form_Decorator_Abstract */
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require_once 'Zend/Form/Decorator/Abstract.php';
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/**
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* Zend_Form_Decorator_ViewHelper
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*
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* Decorate an element by using a view helper to render it.
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*
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* Accepts the following options:
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* - separator: string with which to separate passed in content and generated content
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* - placement: whether to append or prepend the generated content to the passed in content
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* - helper: the name of the view helper to use
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*
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* Assumes the view helper accepts three parameters, the name, value, and
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* optional attributes; these will be provided by the element.
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*
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* @category Zend
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* @package Zend_Form
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* @subpackage Decorator
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* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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class Zend_Form_Decorator_ViewHelper extends Zend_Form_Decorator_Abstract
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{
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/**
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* Element types that represent buttons
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* @var array
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*/
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protected $_buttonTypes = array(
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'Zend_Form_Element_Button',
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'Zend_Form_Element_Reset',
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'Zend_Form_Element_Submit',
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);
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/**
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* View helper to use when rendering
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* @var string
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*/
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protected $_helper;
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/**
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* Set view helper to use when rendering
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*
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* @param string $helper
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* @return Zend_Form_Decorator_Element_ViewHelper
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*/
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public function setHelper($helper)
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{
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$this->_helper = (string) $helper;
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return $this;
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}
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/**
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* Retrieve view helper for rendering element
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*
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* @return string
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*/
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public function getHelper()
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{
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if (null === $this->_helper) {
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$options = $this->getOptions();
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if (isset($options['helper'])) {
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$this->setHelper($options['helper']);
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$this->removeOption('helper');
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} else {
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$element = $this->getElement();
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if (null !== $element) {
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if (null !== ($helper = $element->getAttrib('helper'))) {
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$this->setHelper($helper);
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} else {
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$type = $element->getType();
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if ($pos = strrpos($type, '_')) {
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$type = substr($type, $pos + 1);
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}
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$this->setHelper('form' . ucfirst($type));
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}
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}
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}
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}
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return $this->_helper;
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}
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/**
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* Get name
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*
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* If element is a Zend_Form_Element, will attempt to namespace it if the
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* element belongs to an array.
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*
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* @return string
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*/
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public function getName()
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{
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if (null === ($element = $this->getElement())) {
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return '';
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}
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$name = $element->getName();
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if (!$element instanceof Zend_Form_Element) {
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return $name;
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}
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if (null !== ($belongsTo = $element->getBelongsTo())) {
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$name = $belongsTo . '['
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. $name
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. ']';
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}
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if ($element->isArray()) {
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$name .= '[]';
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}
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return $name;
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}
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/**
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* Retrieve element attributes
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*
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* Set id to element name and/or array item.
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*
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* @return array
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*/
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public function getElementAttribs()
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{
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if (null === ($element = $this->getElement())) {
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return null;
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}
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$attribs = $element->getAttribs();
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if (isset($attribs['helper'])) {
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unset($attribs['helper']);
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}
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if (method_exists($element, 'getSeparator')) {
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if (null !== ($listsep = $element->getSeparator())) {
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$attribs['listsep'] = $listsep;
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}
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}
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if (isset($attribs['id'])) {
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return $attribs;
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}
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$id = $element->getName();
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if ($element instanceof Zend_Form_Element) {
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if (null !== ($belongsTo = $element->getBelongsTo())) {
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$belongsTo = preg_replace('/\[([^\]]+)\]/', '-$1', $belongsTo);
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$id = $belongsTo . '-' . $id;
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}
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}
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$element->setAttrib('id', $id);
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$attribs['id'] = $id;
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return $attribs;
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}
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/**
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* Get value
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*
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* If element type is one of the button types, returns the label.
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*
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* @param Zend_Form_Element $element
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* @return string|null
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*/
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public function getValue($element)
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{
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if (!$element instanceof Zend_Form_Element) {
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return null;
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}
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foreach ($this->_buttonTypes as $type) {
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if ($element instanceof $type) {
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if (stristr($type, 'button')) {
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$element->content = $element->getLabel();
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return null;
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}
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return $element->getLabel();
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}
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}
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return $element->getValue();
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}
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/**
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* Render an element using a view helper
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*
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* Determine view helper from 'viewHelper' option, or, if none set, from
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* the element type. Then call as
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* helper($element->getName(), $element->getValue(), $element->getAttribs())
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*
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* @param string $content
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* @return string
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* @throws Zend_Form_Decorator_Exception if element or view are not registered
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*/
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public function render($content)
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{
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$element = $this->getElement();
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$view = $element->getView();
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if (null === $view) {
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require_once 'Zend/Form/Decorator/Exception.php';
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throw new Zend_Form_Decorator_Exception('ViewHelper decorator cannot render without a registered view object');
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}
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if (method_exists($element, 'getMultiOptions')) {
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$element->getMultiOptions();
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}
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$helper = $this->getHelper();
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$separator = $this->getSeparator();
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$value = $this->getValue($element);
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$attribs = $this->getElementAttribs();
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$name = $element->getFullyQualifiedName();
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$id = $element->getId();
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$attribs['id'] = $id;
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$helperObject = $view->getHelper($helper);
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if (method_exists($helperObject, 'setTranslator')) {
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$helperObject->setTranslator($element->getTranslator());
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}
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$elementContent = $view->$helper($name, $value, $attribs, $element->options);
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switch ($this->getPlacement()) {
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case self::APPEND:
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return $content . $separator . $elementContent;
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case self::PREPEND:
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return $elementContent . $separator . $content;
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default:
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return $elementContent;
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}
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}
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}
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