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239 lines
9.0 KiB
PHP
239 lines
9.0 KiB
PHP
<?php
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global $CFG;
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require_once "$CFG->libdir/form/group.php";
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require_once "$CFG->libdir/formslib.php";
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/**
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* Class for a group of elements used to input a date and time.
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*
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* Emulates moodle print_date_selector function and also allows you to select a time.
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*
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* @author Jamie Pratt <me@jamiep.org>
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* @access public
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*/
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class MoodleQuickForm_date_time_selector extends MoodleQuickForm_group{
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/**
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* Options for the element
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*
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* startyear => integer start of range of years that can be selected
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* stopyear => integer last year that can be selected
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* timezone => float/string timezone
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* applydst => apply users daylight savings adjustment?
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* step => step to increment minutes by
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*/
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var $_options = array('startyear'=>1970, 'stopyear'=>2020,
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'timezone'=>99, 'applydst'=>true, 'step'=>5, 'optional'=>false);
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/**
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* These complement separators, they are appended to the resultant HTML
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* @access private
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* @var array
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*/
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var $_wrap = array('', '');
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/**
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* Class constructor
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*
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* @access public
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* @param string Element's name
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* @param mixed Label(s) for an element
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* @param array Options to control the element's display
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* @param mixed Either a typical HTML attribute string or an associative array
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*/
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function MoodleQuickForm_date_time_selector($elementName = null, $elementLabel = null, $options = array(), $attributes = null)
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{
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$this->HTML_QuickForm_element($elementName, $elementLabel, $attributes);
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$this->_persistantFreeze = true;
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$this->_appendName = true;
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$this->_type = 'date_time_selector';
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// set the options, do not bother setting bogus ones
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if (is_array($options)) {
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foreach ($options as $name => $value) {
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if (isset($this->_options[$name])) {
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if (is_array($value) && is_array($this->_options[$name])) {
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$this->_options[$name] = @array_merge($this->_options[$name], $value);
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} else {
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$this->_options[$name] = $value;
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}
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}
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}
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}
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}
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// }}}
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// {{{ _createElements()
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function _createElements()
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{
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$this->_elements = array();
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for ($i=1; $i<=31; $i++) {
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$days[$i] = $i;
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}
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for ($i=1; $i<=12; $i++) {
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$months[$i] = userdate(gmmktime(12,0,0,$i,15,2000), "%B");
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}
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for ($i=$this->_options['startyear']; $i<=$this->_options['stopyear']; $i++) {
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$years[$i] = $i;
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}
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for ($i=0; $i<=23; $i++) {
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$hours[$i] = sprintf("%02d",$i);
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}
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for ($i=0; $i<60; $i+=$this->_options['step']) {
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$minutes[$i] = sprintf("%02d",$i);
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}
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$this->_elements[] =& MoodleQuickForm::createElement('select', 'day', get_string('day', 'form'), $days, $this->getAttributes(), true);
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$this->_elements[] =& MoodleQuickForm::createElement('select', 'month', get_string('month', 'form'), $months, $this->getAttributes(), true);
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$this->_elements[] =& MoodleQuickForm::createElement('select', 'year', get_string('year', 'form'), $years, $this->getAttributes(), true);
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if (right_to_left()) { // Switch order of elements for Right-to-Left
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$this->_elements[] =& MoodleQuickForm::createElement('select', 'minute', get_string('minute', 'form'), $minutes, $this->getAttributes(), true);
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$this->_elements[] =& MoodleQuickForm::createElement('select', 'hour', get_string('hour', 'form'), $hours, $this->getAttributes(), true);
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} else {
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$this->_elements[] =& MoodleQuickForm::createElement('select', 'hour', get_string('hour', 'form'), $hours, $this->getAttributes(), true);
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$this->_elements[] =& MoodleQuickForm::createElement('select', 'minute', get_string('minute', 'form'), $minutes, $this->getAttributes(), true);
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}
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// If optional we add a checkbox which the user can use to turn if on
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if($this->_options['optional']) {
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$this->_elements[] =& MoodleQuickForm::createElement('checkbox', 'off', null, get_string('disable'), $this->getAttributes(), true);
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}
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foreach ($this->_elements as $element){
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if (method_exists($element, 'setHiddenLabel')){
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$element->setHiddenLabel(true);
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}
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}
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}
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// }}}
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// {{{ onQuickFormEvent()
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/**
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* Called by HTML_QuickForm whenever form event is made on this element
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*
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* @param string $event Name of event
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* @param mixed $arg event arguments
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* @param object $caller calling object
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* @since 1.0
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* @access public
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* @return void
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*/
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function onQuickFormEvent($event, $arg, &$caller)
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{
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switch ($event) {
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case 'updateValue':
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// constant values override both default and submitted ones
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// default values are overriden by submitted
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$value = $this->_findValue($caller->_constantValues);
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if (null === $value) {
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// if no boxes were checked, then there is no value in the array
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// yet we don't want to display default value in this case
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if ($caller->isSubmitted()) {
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$value = $this->_findValue($caller->_submitValues);
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} else {
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$value = $this->_findValue($caller->_defaultValues);
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}
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}
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$requestvalue=$value;
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if ($value == 0) {
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$value = time();
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}
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if (!is_array($value)) {
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$currentdate = usergetdate($value);
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// Round minutes to the previous multiple of step.
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$currentdate['minutes'] -= $currentdate['minutes'] % $this->_options['step'];
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$value = array(
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'minute' => $currentdate['minutes'],
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'hour' => $currentdate['hours'],
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'day' => $currentdate['mday'],
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'month' => $currentdate['mon'],
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'year' => $currentdate['year']);
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// If optional, default to off, unless a date was provided
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if($this->_options['optional']) {
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$value['off'] = ($requestvalue == 0) ? true : false;
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}
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} else {
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$value['off'] = (isset($value['off'])) ? true : false;
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}
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if (null !== $value){
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$this->setValue($value);
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}
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break;
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case 'createElement':
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if($arg[2]['optional']) {
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$caller->disabledIf($arg[0], $arg[0].'[off]', 'checked');
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}
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return parent::onQuickFormEvent($event, $arg, $caller);
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break;
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default:
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return parent::onQuickFormEvent($event, $arg, $caller);
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}
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}
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// }}}
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// {{{ toHtml()
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function toHtml()
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{
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include_once('HTML/QuickForm/Renderer/Default.php');
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$renderer =& new HTML_QuickForm_Renderer_Default();
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$renderer->setElementTemplate('{element}');
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parent::accept($renderer);
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return $this->_wrap[0] . $renderer->toHtml() . $this->_wrap[1];
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}
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// }}}
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// {{{ accept()
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function accept(&$renderer, $required = false, $error = null)
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{
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$renderer->renderElement($this, $required, $error);
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}
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// }}}
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/**
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* Output a timestamp. Give it the name of the group.
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*
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* @param array $submitValues
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* @param bool $assoc
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* @return array
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*/
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function exportValue(&$submitValues, $assoc = false)
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{
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$value = null;
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$valuearray = array();
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foreach ($this->_elements as $element){
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$thisexport = $element->exportValue($submitValues[$this->getName()], true);
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if ($thisexport!=null){
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$valuearray += $thisexport;
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}
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}
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if (count($valuearray)){
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if($this->_options['optional']) {
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// If checkbox is on, the value is zero, so go no further
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if(!empty($valuearray['off'])) {
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$value[$this->getName()]=0;
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return $value;
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}
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}
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$valuearray=$valuearray + array('year'=>1970, 'month'=>1, 'day'=>1, 'hour'=>0, 'minute'=>0);
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$value[$this->getName()]=make_timestamp(
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$valuearray['year'],
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$valuearray['month'],
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$valuearray['day'],
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$valuearray['hour'],
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$valuearray['minute'],
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0,
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$this->_options['timezone'],
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$this->_options['applydst']);
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return $value;
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} else {
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return null;
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}
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}
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// }}}
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}
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?>
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