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<?php |
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namespace Elementor; |
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|
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; // Exit if accessed directly. |
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} |
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|
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/** |
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* Elementor stylesheet. |
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* |
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* Elementor stylesheet handler class responsible for setting up CSS rules and |
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* properties, and all the CSS `@media` rule with supported viewport width. |
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* |
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* @since 1.0.0 |
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*/ |
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class Stylesheet { |
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|
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/** |
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* CSS Rules. |
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* |
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* Holds the list of CSS rules. |
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* |
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* @since 1.0.0 |
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* @access private |
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* |
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* @var array A list of CSS rules. |
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*/ |
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private $rules = []; |
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|
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/** |
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* Devices. |
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* |
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* Holds the list of devices. |
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* |
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* @since 1.0.0 |
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* @access private |
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* |
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* @var array A list of devices. |
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*/ |
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private $devices = []; |
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|
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/** |
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* Raw CSS. |
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* |
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* Holds the raw CSS. |
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* |
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* @since 1.0.0 |
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* @access private |
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* |
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* @var array The raw CSS. |
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*/ |
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private $raw = []; |
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|
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/** |
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* Parse CSS rules. |
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* |
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* Goes over the list of CSS rules and generates the final CSS. |
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* |
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* @since 1.0.0 |
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* @access public |
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* @static |
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* |
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* @param array $rules CSS rules. |
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* |
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* @return string Parsed rules. |
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*/ |
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public static function parse_rules( array $rules ) { |
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$parsed_rules = ''; |
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|
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foreach ( $rules as $selector => $properties ) { |
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$selector_content = self::parse_properties( $properties ); |
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|
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if ( $selector_content ) { |
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$parsed_rules .= $selector . '{' . $selector_content . '}'; |
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} |
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} |
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|
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return $parsed_rules; |
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} |
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|
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/** |
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* Parse CSS properties. |
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* |
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* Goes over the selector properties and generates the CSS of the selector. |
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* |
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* @since 1.0.0 |
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* @access public |
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* @static |
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* |
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* @param array $properties CSS properties. |
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* |
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* @return string Parsed properties. |
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*/ |
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public static function parse_properties( array $properties ) { |
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$parsed_properties = ''; |
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|
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foreach ( $properties as $property_key => $property_value ) { |
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if ( '' !== $property_value ) { |
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$parsed_properties .= $property_key . ':' . $property_value . ';'; |
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} |
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} |
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|
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return $parsed_properties; |
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} |
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|
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/** |
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* Add device. |
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* |
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* Add a new device to the devices list. |
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* |
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* @since 1.0.0 |
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* @access public |
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* |
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* @param string $device_name Device name. |
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* @param string $device_max_point Device maximum point. |
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* |
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* @return Stylesheet The current stylesheet class instance. |
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*/ |
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public function add_device( $device_name, $device_max_point ) { |
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$this->devices[ $device_name ] = $device_max_point; |
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|
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asort( $this->devices ); |
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|
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return $this; |
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} |
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|
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/** |
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* Add rules. |
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* |
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* Add a new CSS rule to the rules list. |
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* |
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* @since 1.0.0 |
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* @access public |
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* |
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* @param string $selector CSS selector. |
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* @param array|string $style_rules Optional. Style rules. Default is `null`. |
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* @param array $query Optional. Media query. Default is `null`. |
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* |
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* @return Stylesheet The current stylesheet class instance. |
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*/ |
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public function add_rules( $selector, $style_rules = null, ?array $query = null ) { |
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$query_hash = 'all'; |
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|
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if ( $query ) { |
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$query_hash = $this->query_to_hash( $query ); |
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} |
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|
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if ( ! isset( $this->rules[ $query_hash ] ) ) { |
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$this->add_query_hash( $query_hash ); |
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} |
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|
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if ( null === $style_rules ) { |
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preg_match_all( '/([^\s].+?(?=\{))\{((?s:.)+?(?=}))}/', $selector, $parsed_rules ); |
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|
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foreach ( $parsed_rules[1] as $index => $selector ) { |
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$this->add_rules( $selector, $parsed_rules[2][ $index ], $query ); |
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} |
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|
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return $this; |
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} |
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|
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if ( ! isset( $this->rules[ $query_hash ][ $selector ] ) ) { |
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$this->rules[ $query_hash ][ $selector ] = []; |
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} |
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|
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if ( is_string( $style_rules ) ) { |
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$style_rules = array_filter( explode( ';', trim( $style_rules ) ) ); |
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|
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$ordered_rules = []; |
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|
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foreach ( $style_rules as $rule ) { |
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$property = explode( ':', $rule, 2 ); |
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|
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if ( count( $property ) < 2 ) { |
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return $this; |
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} |
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|
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$ordered_rules[ trim( $property[0] ) ] = trim( $property[1], ' ;' ); |
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} |
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|
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$style_rules = $ordered_rules; |
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} |
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|
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$this->rules[ $query_hash ][ $selector ] = array_merge( $this->rules[ $query_hash ][ $selector ], $style_rules ); |
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|
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return $this; |
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} |
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|
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/** |
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* Add raw CSS. |
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* |
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* Add a raw CSS rule. |
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* |
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* @since 1.0.8 |
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* @access public |
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* |
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* @param string $css The raw CSS. |
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* @param string $device Optional. The device. Default is empty. |
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* |
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* @return Stylesheet The current stylesheet class instance. |
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*/ |
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public function add_raw_css( $css, $device = '' ) { |
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if ( ! isset( $this->raw[ $device ] ) ) { |
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$this->raw[ $device ] = []; |
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} |
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|
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$this->raw[ $device ][] = trim( $css ); |
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|
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return $this; |
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} |
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|
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/** |
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* Get CSS rules. |
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* |
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* Retrieve the CSS rules. |
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* |
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* @since 1.0.5 |
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* @access public |
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* |
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* @param string $device Optional. The device. Default is empty. |
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* @param string $selector Optional. CSS selector. Default is empty. |
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* @param string $property Optional. CSS property. Default is empty. |
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* |
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* @return null|array CSS rules, or `null` if not rules found. |
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*/ |
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public function get_rules( $device = null, $selector = null, $property = null ) { |
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if ( ! $device ) { |
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return $this->rules; |
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} |
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|
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if ( $property ) { |
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return isset( $this->rules[ $device ][ $selector ][ $property ] ) ? $this->rules[ $device ][ $selector ][ $property ] : null; |
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} |
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|
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if ( $selector ) { |
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return isset( $this->rules[ $device ][ $selector ] ) ? $this->rules[ $device ][ $selector ] : null; |
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} |
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|
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return isset( $this->rules[ $device ] ) ? $this->rules[ $device ] : null; |
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} |
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|
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/** |
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* To string. |
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* |
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* This magic method responsible for parsing the rules into one CSS string. |
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* |
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* @since 1.0.0 |
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* @access public |
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* |
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* @return string CSS style. |
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*/ |
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public function __toString() { |
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$style_text = ''; |
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|
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foreach ( $this->rules as $query_hash => $rule ) { |
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$device_text = self::parse_rules( $rule ); |
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|
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if ( 'all' !== $query_hash ) { |
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$device_text = $this->get_query_hash_style_format( $query_hash ) . '{' . $device_text . '}'; |
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} |
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|
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$style_text .= $device_text; |
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} |
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|
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foreach ( $this->raw as $device_name => $raw ) { |
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$raw = implode( "\n", $raw ); |
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|
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if ( $raw && isset( $this->devices[ $device_name ] ) ) { |
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$raw = '@media(max-width: ' . $this->devices[ $device_name ] . 'px){' . $raw . '}'; |
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} |
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|
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$style_text .= $raw; |
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} |
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|
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return $style_text; |
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} |
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|
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/** |
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* Query to hash. |
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* |
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* Turns the media query into a hashed string that represents the query |
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* endpoint in the rules list. |
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* |
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* @since 1.2.0 |
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* @access private |
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* |
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* @param array $query CSS media query. |
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* |
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* @return string Hashed string of the query. |
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*/ |
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private function query_to_hash( array $query ) { |
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$hash = []; |
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|
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foreach ( $query as $endpoint => $value ) { |
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$hash[] = $endpoint . '_' . $value; |
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} |
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|
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return implode( '-', $hash ); |
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} |
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|
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/** |
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* Hash to query. |
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* |
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* Turns the hashed string to an array that contains the data of the query |
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* endpoint. |
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* |
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* @since 1.2.0 |
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* @access private |
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* |
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* @param string $hash Hashed string of the query. |
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* |
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* @return array Media query data. |
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*/ |
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private function hash_to_query( $hash ) { |
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$query = []; |
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|
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$hash = array_filter( explode( '-', $hash ) ); |
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|
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foreach ( $hash as $single_query ) { |
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preg_match( '/(min|max)_(.*)/', $single_query, $query_parts ); |
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|
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$end_point = $query_parts[1]; |
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|
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$device_name = $query_parts[2]; |
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|
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$query[ $end_point ] = 'max' === $end_point ? $this->devices[ $device_name ] : Plugin::$instance->breakpoints->get_device_min_breakpoint( $device_name ); |
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} |
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|
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return $query; |
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} |
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|
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/** |
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* Add query hash. |
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* |
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* Register new endpoint query and sort the rules the way they should be |
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* displayed in the final stylesheet based on the device and the viewport |
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* width. |
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* |
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* @since 1.2.0 |
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* @access private |
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* |
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* @param string $query_hash Hashed string of the query. |
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*/ |
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private function add_query_hash( $query_hash ) { |
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$this->rules[ $query_hash ] = []; |
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|
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uksort( |
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$this->rules, function( $a, $b ) { |
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if ( 'all' === $a ) { |
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return -1; |
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} |
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|
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if ( 'all' === $b ) { |
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return 1; |
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} |
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|
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$a_query = $this->hash_to_query( $a ); |
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|
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$b_query = $this->hash_to_query( $b ); |
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|
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if ( isset( $a_query['min'] ) xor isset( $b_query['min'] ) ) { |
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return 1; |
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} |
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|
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if ( isset( $a_query['min'] ) ) { |
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$range = $a_query['min'] - $b_query['min']; |
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|
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if ( $range ) { |
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return $range; |
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} |
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|
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$a_has_max = isset( $a_query['max'] ); |
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|
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if ( $a_has_max xor isset( $b_query['max'] ) ) { |
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return $a_has_max ? 1 : -1; |
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} |
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|
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if ( ! $a_has_max ) { |
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return 0; |
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} |
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} |
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|
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return $b_query['max'] - $a_query['max']; |
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} |
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); |
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} |
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|
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/** |
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* Get query hash style format. |
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* |
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* Retrieve formatted media query rule with the endpoint width settings. |
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* |
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* The method returns the CSS `@media` rule and supported viewport width in |
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* pixels. It can also handle multiple width endpoints. |
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* |
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* @since 1.2.0 |
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* @access private |
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* |
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* @param string $query_hash The hash of the query. |
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* |
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* @return string CSS media query. |
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*/ |
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private function get_query_hash_style_format( $query_hash ) { |
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$query = $this->hash_to_query( $query_hash ); |
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|
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$style_format = []; |
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|
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foreach ( $query as $end_point => $value ) { |
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$style_format[] = '(' . $end_point . '-width:' . $value . 'px)'; |
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} |
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|
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return '@media' . implode( ' and ', $style_format ); |
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} |
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} |
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|
