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<?php
/**
* Class helper_plugin_bureaucracy_fieldnumber
*
* Creates a single line input field, where input is validated to be numeric
*/
class helper_plugin_bureaucracy_fieldnumber extends helper_plugin_bureaucracy_fieldtextbox {
private $autoinc = false;
/**
* Arguments:
* - cmd
* - label
* - ++ (optional)
* - 0000 (optional)
* - ^ (optional)
*
* @param array $args The tokenized definition, only split at spaces
*/
public function initialize($args) {
$pp = array_search('++', $args, true);
if ($pp !== false) {
unset($args[$pp]);
$this->autoinc = true;
}
parent::initialize($args);
if ($this->autoinc) {
global $ID;
$key = $this->get_key();
$c_val = p_get_metadata($ID, 'bureaucracy ' . $key);
if (is_null($c_val)) {
if (!isset($this->opt['value'])) {
$this->opt['value'] = 0;
}
p_set_metadata($ID, array('bureaucracy' => array($key => $this->opt['value'])));
} else {
$this->opt['value'] = $c_val;
}
}
$this->opt['value'] = $this->addLeadingzeros($this->opt['value']);
}
/**
* Validate field value
*
* @throws Exception when not a number
*/
protected function _validate() {
$value = $this->getParam('value');
if (!is_null($value) && !is_numeric($value)){
throw new Exception(sprintf($this->getLang('e_numeric'),hsc($this->getParam('display'))));
}
parent::_validate();
}
/**
* Handle a post to the field
*
* Accepts and validates a posted value.
*
* @param string $value The passed value or array or null if none given
* @param array $fields (reference) form fields (POST handled upto $this field)
* @param int $index index number of field in form
* @param int $formid unique identifier of the form which contains this field
* @return bool Whether the passed value is valid
*/
public function handle_post($value, &$fields, $index, $formid) {
$value = $this->addLeadingzeros($value);
return parent::handle_post($value, $fields, $index, $formid);
}
/**
* Returns the cleaned key for this field required for metadata
*
* @return string key
*/
private function get_key() {
return preg_replace('/\W/', '', $this->opt['label']) . '_autoinc';
}
/**
* Executed after performing the action hooks
*
* Increases counter and purge cache
*/
public function after_action() {
if ($this->autoinc) {
global $ID;
p_set_metadata($ID, array('bureaucracy' => array($this->get_key() => $this->opt['value'] + 1)));
// Force rerendering by removing the instructions cache file
$cache_fn = getCacheName(wikiFN($ID).$_SERVER['HTTP_HOST'].$_SERVER['SERVER_PORT'],'.'.'i');
if (file_exists($cache_fn)) {
unlink($cache_fn);
}
}
}
/**
* Add leading zeros, depending on the corresponding field option
*
* @param int|string $value number
* @return string
*/
protected function addLeadingzeros(&$value) {
if (isset($this->opt['leadingzeros'])) {
$length = strlen($value);
for($i = $length; $i < $this->opt['leadingzeros']; $i++) {
$value = '0' . $value;
}
return $value;
}
return $value;
}
}
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