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<?php
namespace Elementor\Core\Responsive\Files;
use Elementor\Core\Breakpoints\Breakpoint;
use Elementor\Core\Files\Base;
use Elementor\Core\Responsive\Responsive;
use Elementor\Plugin;
use Elementor\Utils;
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly.
}
class Frontend extends Base {
const META_KEY = 'elementor-custom-breakpoints-files';
private $template_file;
/**
* @since 2.1.0
* @access public
*/
public function __construct( $file_name, $template_file = null ) {
$this->template_file = $template_file;
parent::__construct( $file_name );
}
/**
* @since 2.1.0
* @access public
*/
public function parse_content() {
$breakpoints = Plugin::$instance->breakpoints->get_active_breakpoints();
$breakpoints_keys = array_keys( $breakpoints );
$file_content = Utils::file_get_contents( $this->template_file );
// The regex pattern parses placeholders located in the frontend _templates.scss file.
$file_content = preg_replace_callback( '/ELEMENTOR_SCREEN_([A-Z_]+)(?:_(MIN|MAX|NEXT))/', function ( $placeholder_data ) use ( $breakpoints_keys, $breakpoints ) {
// Handle BC for legacy template files and Elementor Pro builds.
$placeholder_data = $this->maybe_convert_placeholder_data( $placeholder_data );
$breakpoint_index = array_search( strtolower( $placeholder_data[1] ), $breakpoints_keys, true );
if ( 'DESKTOP' === $placeholder_data[1] ) {
if ( 'MIN' === $placeholder_data[2] ) {
$value = Plugin::$instance->breakpoints->get_desktop_min_point();
} elseif ( isset( $breakpoints['widescreen'] ) ) {
// If the 'widescreen' breakpoint is active, the Desktop's max value is the Widescreen breakpoint - 1px.
$value = $breakpoints['widescreen']->get_value() - 1;
} else {
// If the 'widescreen' breakpoint is not active, the Desktop device should not have a max value.
$value = 99999;
}
} elseif ( false === $breakpoint_index ) {
// If the breakpoint in the placeholder is not active - use a -1 value for the media query, to make
// sure the setting is printed (to avoid a PHP error) but doesn't apply.
return -1;
} elseif ( 'WIDESCREEN' === $placeholder_data[1] ) {
$value = $breakpoints['widescreen']->get_value();
} else {
$breakpoint_index = array_search( strtolower( $placeholder_data[1] ), $breakpoints_keys, true );
$is_max_point = 'MAX' === $placeholder_data[2];
// If the placeholder capture is `MOBILE_NEXT` or `TABLET_NEXT`, the original breakpoint value is used.
if ( ! $is_max_point && 'NEXT' !== $placeholder_data[2] ) {
$breakpoint_index--;
}
$value = $breakpoints[ $breakpoints_keys[ $breakpoint_index ] ]->get_value();
if ( ! $is_max_point ) {
$value++;
}
}
return $value . 'px';
}, $file_content );
return $file_content;
}
/**
* Load meta.
*
* Retrieve the file meta data.
*
* @since 2.1.0
* @access protected
*/
protected function load_meta() {
$option = $this->load_meta_option();
$file_meta_key = $this->get_file_meta_key();
if ( empty( $option[ $file_meta_key ] ) ) {
return [];
}
return $option[ $file_meta_key ];
}
/**
* Update meta.
*
* Update the file meta data.
*
* @since 2.1.0
* @access protected
*
* @param array $meta New meta data.
*/
protected function update_meta( $meta ) {
$option = $this->load_meta_option();
$option[ $this->get_file_meta_key() ] = $meta;
update_option( static::META_KEY, $option );
}
/**
* Delete meta.
*
* Delete the file meta data.
*
* @since 2.1.0
* @access protected
*/
protected function delete_meta() {
$option = $this->load_meta_option();
$file_meta_key = $this->get_file_meta_key();
if ( isset( $option[ $file_meta_key ] ) ) {
unset( $option[ $file_meta_key ] );
}
if ( $option ) {
update_option( static::META_KEY, $option );
} else {
delete_option( static::META_KEY );
}
}
/**
* @since 2.1.0
* @access private
*/
private function get_file_meta_key() {
return pathinfo( $this->get_file_name(), PATHINFO_FILENAME );
}
/**
* @since 2.1.0
* @access private
*/
private function load_meta_option() {
$option = get_option( static::META_KEY );
if ( ! $option ) {
$option = [];
}
return $option;
}
/**
* Maybe Convert Placeholder Data
*
* Converts responsive placeholders in Elementor CSS template files from the legacy format into the new format.
* Used for backwards compatibility for old Pro versions that were built with an Elementor Core version <3.2.0.
*
* @since 3.2.3
*/
private function maybe_convert_placeholder_data( $placeholder_data ) {
switch ( $placeholder_data[1] ) {
case 'SM':
$placeholder_data[1] = 'MOBILE';
break;
case 'MD':
$placeholder_data[1] = 'TABLET';
break;
case 'LG':
$placeholder_data[1] = 'DESKTOP';
}
return $placeholder_data;
}
}