Source
File: wp-includes/customize/class-wp-customize-nav-menu-location-control.php
public function render_content() {
if ( empty( $this->choices ) ) {
return;
}
$value_hidden_class = '';
$no_value_hidden_class = '';
if ( $this->value() ) {
$value_hidden_class = ' hidden';
} else {
$no_value_hidden_class = ' hidden';
}
?>
<label>
<?php if ( ! empty( $this->label ) ) : ?>
<span class="customize-control-title"><?php echo esc_html( $this->label ); ?></span>
<?php endif; ?>
<?php if ( ! empty( $this->description ) ) : ?>
<span class="description customize-control-description"><?php echo $this->description; ?></span>
<?php endif; ?>
<select <?php $this->link(); ?>>
<?php
foreach ( $this->choices as $value => $label ) :
echo '<option value="' . esc_attr( $value ) . '"' . selected( $this->value(), $value, false ) . '>' . $label . '</option>';
endforeach;
?>
</select>
</label>
<button type="button" class="button-link create-menu<?php echo $value_hidden_class; ?>" data-location-id="<?php echo esc_attr( $this->location_id ); ?>" aria-label="<?php esc_attr_e( 'Create a menu for this location' ); ?>"><?php _e( '+ Create New Menu' ); ?></button>
<button type="button" class="button-link edit-menu<?php echo $no_value_hidden_class; ?>" aria-label="<?php esc_attr_e( 'Edit selected menu' ); ?>"><?php _e( 'Edit Menu' ); ?></button>
<?php
}