<?php
namespace TYPO3\Fluid\ViewHelpers\Form;
/* *
* This script belongs to the FLOW3 package "Fluid". *
* *
* It is free software; you can redistribute it and/or modify it under *
* the terms of the GNU Lesser General Public License, either version 3 *
* of the License, or (at your option) any later version. *
* *
* The TYPO3 project - inspiring people to share! *
* */
/**
* Modified by Michel Albers 21.05.2012
* Added prepend and append arguments
*/
/**
* This view helper generates a <select> dropdown list for the use with a form.
*
* = Basic usage =
*
* The most straightforward way is to supply an associative array as the "options" parameter.
* The array key is used as option key, and the value is used as human-readable name.
*
* <code title="Basic usage">
* <f:form.select name="paymentOptions" options="{payPal: 'PayPal International Services', visa: 'VISA Card'}" />
* </code>
*
* = Pre-select a value =
*
* To pre-select a value, set "value" to the option key which should be selected.
* <code title="Default value">
* <f:form.select name="paymentOptions" options="{payPal: 'PayPal International Services', visa: 'VISA Card'}" value="visa" />
* </code>
* Generates a dropdown box like above, except that "VISA Card" is selected.
*
* If the select box is a multi-select box (multiple="true"), then "value" can be an array as well.
*
* = Usage on domain objects =
*
* If you want to output domain objects, you can just pass them as array into the "options" parameter.
* To define what domain object value should be used as option key, use the "optionValueField" variable. Same goes for optionLabelField.
* If neither is given, the Identifier (UUID/uid) and the __toString() method are tried as fallbacks.
*
* If the optionValueField variable is set, the getter named after that value is used to retrieve the option key.
* If the optionLabelField variable is set, the getter named after that value is used to retrieve the option value.
*
* <code title="Domain objects">
* <f:form.select name="users" options="{userArray}" optionValueField="id" optionLabelField="firstName" />
* </code>
* In the above example, the userArray is an array of "User" domain objects, with no array key specified.
*
* So, in the above example, the method $user->getId() is called to retrieve the key, and $user->getFirstName() to retrieve the displayed value of each entry.
*
* The "value" property now expects a domain object, and tests for object equivalence.
*
* @api
*/
class TbselectViewHelper extends \TYPO3\Fluid\ViewHelpers\Form\AbstractFormFieldViewHelper {
/**
* @var string
*/
protected $tagName = 'select';
/**
* @var mixed
*/
protected $selectedValue = NULL;
/**
* Initialize arguments.
*
* @return void
* @api
*/
public function initializeArguments() {
parent::initializeArguments();
$this->registerUniversalTagAttributes();
$this->registerTagAttribute('multiple', 'string', 'if set, multiple select field');
$this->registerTagAttribute('size', 'string', 'Size of input field');
$this->registerTagAttribute('disabled', 'string', 'Specifies that the input element should be disabled when the page loads');
$this->registerArgument('prepend','array','Values before options list',FALSE);
$this->registerArgument('append','array','Values after options list',FALSE);
$this->registerArgument('options', 'array', 'Associative array with internal IDs as key, and the values are displayed in the select box', TRUE);
$this->registerArgument('optionValueField', 'string', 'If specified, will call the appropriate getter on each object to determine the value.');
$this->registerArgument('optionLabelField', 'string', 'If specified, will call the appropriate getter on each object to determine the label.');
$this->registerArgument('sortByOptionLabel', 'boolean', 'If true, List will be sorted by label.', FALSE, FALSE);
$this->registerArgument('selectAllByDefault', 'boolean', 'If specified options are selected if none was set before.', FALSE, FALSE);
$this->registerArgument('errorClass', 'string', 'CSS class to set if there are errors for this view helper', FALSE, 'f3-form-error');
}
/**
* Render the tag.
*
* @return string rendered tag.
* @api
*/
public function render() {
$name = $this->getName();
if ($this->hasArgument('multiple')) {
$name .= '[]';
}
$this->tag->addAttribute('name', $name);
$options = $this->getOptions();
if (empty($options)) {
$options = array('' => '');
}
$this->tag->setContent($this->renderOptionTags($options));
$this->setErrorClassAttribute();
$content = '';
// register field name for token generation.
// in case it is a multi-select, we need to register the field name
// as often as there are elements in the box
if ($this->hasArgument('multiple') && $this->arguments['multiple'] !== '') {
$content .= $this->renderHiddenFieldForEmptyValue();
for ($i=0; $i<count($options); $i++) {
$this->registerFieldNameForFormTokenGeneration($name);
}
} else {
$this->registerFieldNameForFormTokenGeneration($name);
}
$content .= $this->tag->render();
return $content;
}
/**
* Render the option tags.
*
* @param array $options the options for the form.
* @return string rendered tags.
*/
protected function renderOptionTags($options) {
$output = '';
foreach ($options as $value => $label) {
$isSelected = $this->isSelected($value);
$output.= $this->renderOptionTag($value, $label, $isSelected) . chr(10);
}
return $output;
}
/**
* Render the option tags.
*
* @return array an associative array of options, key will be the value of the option tag
*/
protected function getOptions() {
if (!is_array($this->arguments['options']) && !($this->arguments['options'] instanceof \Traversable)) {
return array();
}
$options = array();
$optionsArgument = $this->arguments['options'];
foreach ($optionsArgument as $key => $value) {
if (is_object($value)) {
if ($this->hasArgument('optionValueField')) {
$key = \TYPO3\FLOW3\Reflection\ObjectAccess::getPropertyPath($value, $this->arguments['optionValueField']);
if (is_object($key)) {
if (method_exists($key, '__toString')) {
$key = (string)$key;
} else {
throw new \TYPO3\Fluid\Core\ViewHelper\Exception('Identifying value for object of class "' . get_class($value) . '" was an object.' , 1247827428);
}
}
} elseif ($this->persistenceManager->getIdentifierByObject($value) !== NULL) {
$key = $this->persistenceManager->getIdentifierByObject($value);
} elseif (method_exists($value, '__toString')) {
$key = (string)$value;
} else {
throw new \TYPO3\Fluid\Core\ViewHelper\Exception('No identifying value for object of class "' . get_class($value) . '" found.' , 1247826696);
}
if ($this->hasArgument('optionLabelField')) {
$value = \TYPO3\FLOW3\Reflection\ObjectAccess::getPropertyPath($value, $this->arguments['optionLabelField']);
if (is_object($value)) {
if (method_exists($value, '__toString')) {
$value = (string)$value;
} else {
throw new \TYPO3\Fluid\Core\ViewHelper\Exception('Label value for object of class "' . get_class($value) . '" was an object without a __toString() method.' , 1247827553);
}
}
} elseif (method_exists($value, '__toString')) {
$value = (string)$value;
} elseif ($this->persistenceManager->getIdentifierByObject($value) !== NULL) {
$value = $this->persistenceManager->getIdentifierByObject($value);
}
}
$options[$key] = $value;
}
if ($this->arguments['sortByOptionLabel']) {
asort($options);
}
/* Prepend and Append */
if(!empty($this->arguments['prepend'])) {
$options = array_merge($this->arguments['prepend'],$options);
}
if(!empty($this->arguments['append'])) {
$options = array_merge($options,$this->arguments['append']);
}
return $options;
}
/**
* Render the option tags.
*
* @param mixed $value Value to check for
* @return boolean TRUE if the value should be marked a s selected; FALSE otherwise
*/
protected function isSelected($value) {
$selectedValue = $this->getSelectedValue();
if ($value === $selectedValue || (string)$value === $selectedValue) {
return TRUE;
}
if ($this->hasArgument('multiple')) {
if (is_null($selectedValue) && $this->arguments['selectAllByDefault'] === TRUE) {
return TRUE;
} elseif (is_array($selectedValue) && in_array($value, $selectedValue)) {
return TRUE;
}
}
return FALSE;
}
/**
* Retrieves the selected value(s)
*
* @return mixed value string or an array of strings
*/
protected function getSelectedValue() {
$value = $this->getValue();
if (!is_array($value) && !($value instanceof \Traversable)) {
return $this->getOptionValueScalar($value);
}
$selectedValues = array();
foreach($value as $selectedValueElement) {
$selectedValues[] = $this->getOptionValueScalar($selectedValueElement);
}
return $selectedValues;
}
/**
* Get the option value for an object
*
* @param mixed $valueElement
* @return string
*/
protected function getOptionValueScalar($valueElement) {
if (is_object($valueElement)) {
if ($this->hasArgument('optionValueField')) {
return \TYPO3\FLOW3\Reflection\ObjectAccess::getPropertyPath($valueElement, $this->arguments['optionValueField']);
} else if ($this->persistenceManager->getIdentifierByObject($valueElement) !== NULL){
return $this->persistenceManager->getIdentifierByObject($valueElement);
} else {
return (string)$valueElement;
}
} else {
return $valueElement;
}
}
/**
* Render one option tag
*
* @param string $value value attribute of the option tag (will be escaped)
* @param string $label content of the option tag (will be escaped)
* @param boolean $isSelected specifies wheter or not to add selected attribute
* @return string the rendered option tag
*/
protected function renderOptionTag($value, $label, $isSelected) {
if($value != "NULL") {
$output = '<option value="' . htmlspecialchars($value) . '"';
} else {
$output = '<option value=""';
}
if ($isSelected) {
$output= ' selected="selected"';
}
$output.= '>' . htmlspecialchars($label) . '</option>';
return $output;
}
}
?>