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<?php
/**
* Timezones helper used by timezone field.
*
* @class FLBuilderTimezones
* @since 1.6.3
*/
final class FLBuilderTimezones {
// This function was originally copied from WordPress Core wp-includes/functions.php
// Original function wp_timezone_choice() is not pluggable or filterable and will
// return data that breaks the module options.
/**
* An array of continents.
* @var array
*/
static private $continents = array( 'Africa', 'America', 'Antarctica', 'Arctic', 'Asia', 'Atlantic', 'Australia', 'Europe', 'Indian', 'Pacific' );
/**
* Generates a list of timezones.
*
* @since 1.6.5
*
* @var bool $mo_loaded
*
* @param string $selected_zone Selected timezone.
* @return string
*/
static public function build_timezones( $selected_zone ) {
static $mo_loaded = false;
$continents = array( 'Africa', 'America', 'Antarctica', 'Arctic', 'Asia', 'Atlantic', 'Australia', 'Europe', 'Indian', 'Pacific' );
// Load translations for continents and cities
if ( ! $mo_loaded ) {
$locale = get_locale();
$mofile = WP_LANG_DIR . '/continents-cities-' . $locale . '.mo';
load_textdomain( 'continents-cities', $mofile );
$mo_loaded = true;
}
$zonen = array();
foreach ( timezone_identifiers_list() as $zone ) {
$zone = explode( '/', $zone );
if ( ! in_array( $zone[0], $continents ) ) {
continue;
}
// This determines what gets set and translated - we don't translate Etc/* strings here, they are done later
$exists = array(
0 => ( isset( $zone[0] ) && $zone[0] ),
1 => ( isset( $zone[1] ) && $zone[1] ),
2 => ( isset( $zone[2] ) && $zone[2] ),
);
$exists[3] = ( $exists[0] && 'Etc' !== $zone[0] );
$exists[4] = ( $exists[1] && $exists[3] );
$exists[5] = ( $exists[2] && $exists[3] );
$zonen[] = array(
'continent' => ( $exists[0] ? $zone[0] : '' ),
'city' => ( $exists[1] ? $zone[1] : '' ),
'subcity' => ( $exists[2] ? $zone[2] : '' ),
't_continent' => ( $exists[3] ? translate( str_replace( '_', ' ', $zone[0] ), 'continents-cities' ) : '' ), // @codingStandardsIgnoreLine
't_city' => ( $exists[4] ? translate( str_replace( '_', ' ', $zone[1] ), 'continents-cities' ) : '' ), // @codingStandardsIgnoreLine
't_subcity' => ( $exists[5] ? translate( str_replace( '_', ' ', $zone[2] ), 'continents-cities' ) : '' ), // @codingStandardsIgnoreLine
);
}
usort( $zonen, '_wp_timezone_choice_usort_callback' );
$structure = array();
if ( empty( $selected_zone ) ) {
$structure[] = '<option selected="selected" value="">' . __( 'Select a city', 'fl-builder' ) . '</option>';
}
foreach ( $zonen as $key => $zone ) {
// Build value in an array to join later
$value = array( $zone['continent'] );
if ( empty( $zone['city'] ) ) {
// It's at the continent level (generally won't happen)
$display = $zone['t_continent'];
} else {
// It's inside a continent group
// Continent optgroup
if ( ! isset( $zonen[ $key - 1 ] ) || $zonen[ $key - 1 ]['continent'] !== $zone['continent'] ) {
$label = $zone['t_continent'];
$structure[] = '<optgroup label="' . esc_attr( $label ) . '">';
}
// Add the city to the value
$value[] = $zone['city'];
$display = $zone['t_city'];
if ( ! empty( $zone['subcity'] ) ) {
// Add the subcity to the value
$value[] = $zone['subcity'];
$display .= ' - ' . $zone['t_subcity'];
}
}
// Build the value
$value = join( '/', $value );
$selected = '';
if ( $value === $selected_zone ) {
$selected = 'selected="selected" ';
}
$structure[] = '<option ' . $selected . 'value="' . esc_attr( $value ) . '">' . esc_html( $display ) . '</option>';
// Close continent optgroup
if ( ! empty( $zone['city'] ) && ( ! isset( $zonen[ $key + 1 ] ) || ( isset( $zonen[ $key + 1 ] ) && $zonen[ $key + 1 ]['continent'] !== $zone['continent'] ) ) ) {
$structure[] = '</optgroup>';
}
}
// Do UTC
$structure[] = '<optgroup label="' . esc_attr__( 'UTC', 'fl-builder' ) . '">';
$selected = '';
if ( 'UTC' === $selected_zone ) {
$selected = 'selected="selected" ';
}
$structure[] = '<option ' . $selected . 'value="' . esc_attr__( 'UTC', 'fl-builder' ) . '">' . __( 'UTC', 'fl-builder' ) . '</option>';
$structure[] = '</optgroup>';
// Do manual UTC offsets.
$structure[] = '<optgroup label="' . esc_attr__( 'Manual Offsets', 'fl-builder' ) . '">';
$offset_range = array(
-12,
-11,
-10,
-9,
-8,
-7,
-6,
-5,
-4,
-3,
-2,
-1,
0,
1,
2,
3,
4,
5,
6,
7,
8,
9,
10,
11,
12,
13,
14,
);
foreach ( $offset_range as $offset ) {
if ( 0 <= $offset ) {
$offset_name = '+' . $offset;
} else {
$offset_name = (string) $offset;
}
$offset_value = $offset_name;
$offset_name = 'UTC ' . $offset_name;
$selected = '';
if ( $offset_value === $selected_zone ) {
$selected = 'selected="selected" ';
}
$structure[] = '<option ' . $selected . 'value="' . esc_attr( $offset_value ) . '">' . esc_html( $offset_name ) . '</option>';
}
$structure[] = '</optgroup>';
return join( "\n", $structure );
}
}