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von raredesign | Dez 3, 2019 | Allgemein | 0 Kommentare
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| Current Path : /var/www/web28/html/wp-content/themes/Avada/includes/lib/inc/ |
| Current File : //var/www/web28/html/wp-content/themes/Avada/includes/lib/inc/class-fusion-dynamic-css-helpers.php |
<?php
/**
* Dynamic-CSS helpers.
*
* @package Fusion-Library
* @since 1.0.0
*/
/**
* The Helpers object.
*/
class Fusion_Dynamic_CSS_Helpers {
/**
* An array for dynamic css.
*
* @access public
* @var array
*/
public static $dynamic_css = [];
/**
* The dynamic-css after it's been parsed.
*
* @static
* @access private
* @since 1.6
* @var string
*/
private static $dynamic_css_parsed = '';
/**
* Add to Dynamic CSS.
*
* @access public
* @since 1.0.0
* @param array $css The existing CSS.
*/
public function add_css( $css ) {
if ( ! empty( $css ) ) {
self::$dynamic_css = array_merge_recursive( self::$dynamic_css, $css );
}
}
/**
* Helper function.
* Merge and combine the CSS elements.
*
* @access public
* @param string|array $elements An array of our elements. Strings are directly returned.
* @param string $prefix A prefix to add to all selectors.
* @param string $suffix A suffix to add to all selectors.
* @return string The imploded array of CSS selectors.
*/
public function implode( $elements = [], $prefix = '', $suffix = '' ) {
$builder_status = false;
if ( function_exists( 'fusion_is_preview_frame' ) ) {
$builder_status = fusion_is_preview_frame();
}
if ( $prefix ) {
$prefix .= ' ';
}
if ( $suffix ) {
$suffix = ' ' . $suffix;
}
if ( is_string( $elements ) ) {
if ( ! $builder_status || false === strpos( $prefix . $elements . $suffix, ':hover' ) ) {
return $prefix . $elements . $suffix;
}
// If we are on builder and element is hover selector.
$fake_hover = $prefix . str_replace( ':hover', '.hover', $elements ) . $suffix . ',';
return $fake_hover . $elements;
}
// Make sure our values are unique.
$elements = array_unique( $elements );
// Sort elements alphabetically.
// This way all duplicate items will be merged in the final CSS array.
sort( $elements );
// Check for hover selectors and add class equivalent.
if ( $builder_status ) {
foreach ( $elements as $key => $element ) {
if ( false !== strpos( $prefix . $element . $suffix, ':hover' ) ) {
$fake_hover = str_replace( ':hover', '.hover', $prefix . $element . $suffix );
$elements[] = $fake_hover;
}
$elements[ $key ] = $prefix . $element . $suffix;
}
}
// Implode items and return the value.
return implode( ',', $elements );
}
/**
* Maps elements from dynamic css to the selector.
*
* @access public
* @param array $elements The elements.
* @param string $selector_after The selector after the element.
* @param string $selector_before The selector before the element.
* @return array
*/
public function map_selector( $elements, $selector_after = '', $selector_before = '' ) {
$array = [];
foreach ( $elements as $element ) {
$array[] = $selector_before . $element . $selector_after;
}
return $array;
}
/**
* Get the array of dynamically-generated CSS and convert it to a string.
* Parses the array and adds quotation marks to font families and prefixes for browser-support.
*
* @access public
* @param array $css The CSS array.
* @param bool $skip_filter Set to true to skip the "fusion_dynamic_css" filter.
* @return string
*/
public function parser( $css, $skip_filter = false ) {
// Prefixes.
foreach ( $css as $media_query => $elements ) {
if ( 0 === strpos( $media_query, 'fusion-' ) ) {
$calculated_media_query = Fusion_Media_Query_Scripts::get_media_query_from_key( $media_query );
if ( $calculated_media_query ) {
$media_query = $calculated_media_query;
}
}
foreach ( $elements as $element => $style_array ) {
foreach ( $style_array as $property => $value ) {
// Skip invalid properties.
if ( 'google' === $property || 'subsets' === $property || 'font-backup' === $property ) {
continue;
}
// Letter-spacing.
if ( 'letter-spacing' === $property && is_numeric( $value ) ) {
$value = (string) $value;
$value = trim( $value ) . 'px';
}
// Font-weight.
if ( 'font-weight' === $property && 'regular' === $value ) {
$value = '400';
}
// Font family.
if ( 'font-family' === $property ) {
if ( false === strpos( $value, ',' ) && false === strpos( $value, "'" ) && false === strpos( $value, '"' ) ) {
$value = "'" . $value . "'";
}
$css[ $media_query ][ $element ]['font-family'] = $value;
}
}
}
}
/**
* Process the array of CSS properties and produce the final CSS.
*/
$final_css = '';
foreach ( $css as $media_query => $styles ) {
$final_css .= ( 'global' !== $media_query ) ? $media_query . '{' : '';
foreach ( $styles as $style => $style_array ) {
$final_css .= $style . '{';
foreach ( $style_array as $property => $value ) {
if ( is_array( $value ) ) {
foreach ( $value as $sub_value ) {
$final_css .= $property . ':' . $sub_value . ';';
}
} else {
$final_css .= $property . ':' . $value . ';';
}
}
$final_css .= '}';
}
$final_css .= ( 'global' !== $media_query ) ? '}' : '';
}
return $skip_filter ? $final_css : apply_filters( 'fusion_dynamic_css', $final_css );
}
/**
* Returns the dynamic CSS.
* If possible, it also caches the CSS using WordPress transients.
*
* @access public
* @return string the dynamically-generated CSS.
*/
public function dynamic_css_cached() {
// Get the page ID.
$dynamic_css_obj = Fusion_Dynamic_CSS::get_instance();
$mode = $dynamic_css_obj->get_mode();
$cache = false;
// Only cache if css_cache_method is set to 'db'.
if ( 'inline' === $mode ) {
$cache = true;
}
// If WP_DEBUG set to true, caching is off in TO or Avada is not active if being used (e.g. WP Touch), then do not cache.
if ( 'off' === fusion_library()->get_option( 'css_cache_method' ) || $dynamic_css_obj->is_cache_disabled() ) {
$cache = false;
}
if ( $cache ) {
// If we're compiling to file, and this is a fallback, 1hr caching, 1 day for db mode.
$cache_time = ( 'db' === fusion_library()->get_option( 'css_cache_method' ) ) ? DAY_IN_SECONDS : HOUR_IN_SECONDS;
$c_page_id = fusion_library()->get_page_id();
$page_id = ( $c_page_id ) ? $c_page_id : 'global';
$transient_name = 'fusion_dynamic_css_' . $this->get_dynamic_css_id();
// Check if the dynamic CSS needs updating.
// If it does, then calculate the CSS and then update the transient.
if ( $dynamic_css_obj->needs_update() ) {
// Calculate the dynamic CSS.
$dynamic_css = $dynamic_css_obj->generate_final_css();
// Set the transient for an hour.
set_transient( $transient_name, $dynamic_css, $cache_time );
$option = get_option( 'fusion_dynamic_css_posts', [] );
$option[ $page_id ] = true;
update_option( 'fusion_dynamic_css_posts', $option );
} else {
// Check if the transient exists.
// If it does not exist, then generate the CSS and update the transient.
$dynamic_css = get_transient( $transient_name );
if ( false === $dynamic_css ) {
// Calculate the dynamic CSS.
$dynamic_css = $dynamic_css_obj->generate_final_css();
// Set the transient for an hour.
set_transient( $transient_name, $dynamic_css, $cache_time );
}
}
} else {
// Calculate the dynamic CSS.
$dynamic_css = $dynamic_css_obj->generate_final_css();
}
return $dynamic_css;
}
/**
* Combines google-fonts & fallback fonts.
*
* @access public
* @since 5.0.0
* @param array $typo_array The typography setting as saved in the db.
* @return string
*/
public function combined_font_family( $typo_array = [] ) {
$google_font = isset( $typo_array['font-family'] ) ? $typo_array['font-family'] : false;
$fallback_fonts = isset( $typo_array['font-backup'] ) ? $typo_array['font-backup'] : false;
// If a global variable is set to the font, then return the variable,
// since the global typography variable will also contain the fallback fonts.
if ( false !== strpos( $google_font, 'var(' ) ) {
return $google_font;
}
// Exit early by returning the fallback font
// in case no google-font is defined.
if ( false === $google_font ) {
return $this->format_font_family( $fallback_fonts );
}
// Exit early returning the google font
// in case no fallback font is defined.
if ( false === $fallback_fonts || '' === $fallback_fonts ) {
return $this->format_font_family( $google_font );
}
// Exit early returning the google (primary) font
// in case google font is set to use standard font and it's the same as fallback font.
if ( $google_font === $fallback_fonts ) {
return $this->format_font_family( $google_font );
}
// Return the sum of the font-families properly formatted.
return $this->format_font_family( $google_font . ', ' . $fallback_fonts );
}
/**
* Formats the font-family for CSS use.
*
* @access public
* @since 5.0.3
* @param string $family The font-family to use.
* @return string
*/
public function format_font_family( $family ) {
// Make sure nothing malicious comes through.
$family = wp_strip_all_tags( $family );
// Remove quotes and double-quotes.
// We'll add these back later if they are indeed needed.
$family = str_replace( [ '"', "'" ], '', $family );
if ( empty( $family ) ) {
return '';
}
$families = [];
// If multiple font-families, make sure each-one of them is sanitized separately.
if ( false !== strpos( $family, ',' ) ) {
$families = explode( ',', $family );
foreach ( $families as $key => $value ) {
$value = trim( $value );
// Add quotes if needed.
if ( false !== strpos( $value, ' ' ) ) {
$value = '"' . $value . '"';
}
$families[ $key ] = $value;
}
$family = implode( ', ', $families );
} else {
// Add quotes if needed.
if ( false !== strpos( $family, ' ' ) ) {
$family = '"' . $family . '"';
}
}
return $family;
}
/**
* Get the dynamic-css ID.
*
* @access public
* @since 1.6
* @return string
*/
public function get_dynamic_css_id() {
$ids = get_option( 'fusion_dynamic_css_ids', [] );
$c_page_id = fusion_library()->get_page_id();
$page_id = ( $c_page_id ) ? $c_page_id : 'global';
// If a layout is used, and we don't have a specific page ID, need to make sure they get different CSS IDs.
if ( ! $c_page_id && class_exists( 'Fusion_Template_Builder' ) ) {
$layout = Fusion_Template_Builder::get_instance()->get_override( 'layout' );
if ( $layout && 'global' !== $layout->ID ) {
$page_id = $layout->ID;
}
}
if ( ! isset( $ids[ $page_id ] ) || ! $ids[ $page_id ] ) {
$dynamic_css_obj = Fusion_Dynamic_CSS::get_instance();
$dynamic_css = $dynamic_css_obj->generate_final_css();
$ids[ $page_id ] = md5( $dynamic_css );
update_option( 'fusion_dynamic_css_ids', $ids );
}
return $ids[ $page_id ];
}
/**
* Get the dynamic-css.
*
* @access public
* @since 1.6
* @return string
*/
public function get_dynamic_css() {
if ( ! self::$dynamic_css_parsed ) {
$dynamic_css_array = apply_filters( 'fusion_dynamic_css_array', self::$dynamic_css );
self::$dynamic_css_parsed = $this->parser( $dynamic_css_array );
}
return self::$dynamic_css_parsed;
}
/**
* Combine element arrays to a single string.
* This helps clean-up our act and produces cleaner & more minimized CSS.
*
* @static
* @access public
* @since 2.0
* @param string|array $elements The elements.
* @return string
*/
public static function get_elements_string( $elements ) {
$builder_status = false;
if ( function_exists( 'fusion_is_preview_frame' ) ) {
$builder_status = fusion_is_preview_frame();
}
// If it's a string, split to an array using comma as a delimiter.
if ( is_string( $elements ) ) {
$elements = explode( ',', $elements );
}
// Remove spaces etc from the beginning and end of elements.
foreach ( $elements as $key => $element ) {
$elements[ $key ] = trim( $element );
}
// Check for hover selectors and add class equivalent.
if ( $builder_status ) {
foreach ( $elements as $key => $element ) {
if ( false !== strpos( $element, ':hover' ) ) {
$fake_hover = str_replace( ':hover', '.hover', $element );
$elements[] = $fake_hover;
}
}
}
// Remove duplicates.
$elements = array_unique( $elements );
// Sort items in the array.
sort( $elements );
// Return the cleaned-up array as a string using comma as a delimiter.
return implode( ',', $elements );
}
}
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