<?php
class Pluf_Form_Widget_TimeZoneInput extends Pluf_Form_Widget_Input
{
public $input_type = 'text';
public $initial = "";
public function __construct($attrs = []) {
parent::__construct($attrs);
}
public function render($name, $value, $extra_attrs=array()) {
return Pluf_Template::markSafe($this->getHTML($name, $value));
}
public function getHTML($name, $value) {
static $regions = array(
DateTimeZone::AFRICA,
DateTimeZone::AMERICA,
DateTimeZone::ANTARCTICA,
DateTimeZone::ASIA,
DateTimeZone::ATLANTIC,
DateTimeZone::AUSTRALIA,
DateTimeZone::EUROPE,
DateTimeZone::INDIAN,
DateTimeZone::PACIFIC,
);
$timezones = array();
foreach( $regions as $region )
{
$timezones = array_merge( $timezones, DateTimeZone::listIdentifiers( $region ) );
}
$timezone_offsets = array();
foreach( $timezones as $timezone )
{
$tz = new DateTimeZone($timezone);
$timezone_offsets[$timezone] = $tz->getOffset(new DateTime);
}
ksort($timezone_offsets);
$timezone_list = array();
foreach( $timezone_offsets as $timezone => $offset )
{
$offset_prefix = $offset < 0 ? '-' : '+';
$offset_formatted = gmdate( 'H:i', abs($offset) );
$pretty_offset = "UTC${offset_prefix}${offset_formatted}";
$t = new DateTimeZone($timezone);
$c = new DateTime(null, $t);
$current_time = $c->format('g:i A');
$timezone_list[$timezone] = "(${pretty_offset}) $timezone - $current_time";
}
$listArray = [];
foreach($timezone_list as $key => $val) {
if ($key == $value) {
$listArray[] = "<option selected=\"selected\" value=\"$key\">$val</option>";
} else {
$listArray[] = "<option value=\"$key\">$val</option>";
}
}
return "<select name=\"$name\">" . implode("\n", $listArray) . "</select>";
}
}
