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<?php |
| 2 |
/** |
| 3 |
* CSS parser engine |
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*/ |
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namespace Crocoblock\Blocks_Style; |
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|
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class Style_Engine { |
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|
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protected $attrs = array(); |
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|
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protected $css_props = array(); |
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|
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protected $class_name = ''; |
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|
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protected $styles = array(); |
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|
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protected $responsive_styles = array(); |
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|
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protected $variables = array(); |
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|
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protected $current_breakpoint = ''; |
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|
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protected $breakpoints = array( |
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'__desktop' => array( |
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'minWidth' => 992, |
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), |
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'__tablet' => array( |
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'maxWidth' => 991, |
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), |
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'__mobile' => array( |
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'maxWidth' => 478, |
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), |
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); |
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|
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/** |
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* Constructor |
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* |
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* @param array $attrs Block attributes. |
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* @param array $css_props CSS properties. |
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*/ |
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public function __construct( $attrs = array(), $css_props = array() ) { |
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|
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$this->class_name = self::get_classname_from_attrs( $attrs ); |
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|
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if ( ! empty( $attrs['_uniqueClassName'] ) ) { |
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unset( $attrs['_uniqueClassName'] ); |
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} |
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|
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$this->attrs = $attrs; |
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$this->css_props = $css_props; |
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} |
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|
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/** |
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* Get class name from attributes. |
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* |
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* @param array $attrs Block attributes. |
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* @return string |
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*/ |
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public static function get_classname_from_attrs( $attrs = array() ) { |
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return ! empty( $attrs['_uniqueClassName'] ) ? $attrs['_uniqueClassName'] : ''; |
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} |
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|
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/** |
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* Get class name of the block |
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* |
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* @return string |
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*/ |
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public function get_class_name() { |
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return $this->class_name; |
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} |
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|
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/** |
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* Load field handlers. |
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* |
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* This method is used to load field handlers for the block styles. |
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* It checks if the base class exists and includes it if not. |
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*/ |
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public function load_field_handlers() { |
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|
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if ( ! class_exists( '\Crocoblock\Blocks_Style\Field_Handlers\Base' ) ) { |
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require_once dirname( __FILE__ ) . '/field-handlers/base.php'; |
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} |
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} |
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|
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/** |
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* Get styles for the block. |
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* |
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* @return array |
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*/ |
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public function get_styles() { |
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|
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$this->load_field_handlers(); |
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|
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foreach ( array_keys( $this->breakpoints ) as $breakpoint ) { |
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|
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$this->current_breakpoint = $breakpoint; |
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|
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if ( ! empty( $this->attrs[ $breakpoint ] ) && is_array( $this->attrs[ $breakpoint ] ) ) { |
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|
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foreach ( $this->attrs[ $breakpoint ] as $prop_id => $prop_value ) { |
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|
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if ( ! empty( $this->css_props[ $prop_id ] ) ) { |
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$prop = $this->css_props[ $prop_id ]; |
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} else { |
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continue; |
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} |
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|
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if ( ! empty( $prop['css_selector'] ) && is_array( $prop['css_selector'] ) ) { |
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foreach ( $prop['css_selector'] as $selector => $definition ) { |
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$this->add_selector_to_styles( array( |
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'prop' => $prop_id, |
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'type' => $prop['type'], |
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'selectoor' => $selector, |
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'definition' => $definition, |
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'value' => $prop_value, |
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) ); |
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} |
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} |
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|
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if ( ! empty( $prop['css_var'] ) && is_array( $prop['css_var'] ) ) { |
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$handler = $this->get_field_handler( $prop['type'], $prop_value ); |
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if ( $handler ) { |
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$prop['css_var']['suffix'] = $breakpoint; |
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$variable = $handler->parse_variable( $prop['css_var'] ); |
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if ( ! empty( $variable ) ) { |
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$this->variables = array_merge( $this->variables, $variable ); |
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} |
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$prop['css_var']['suffix'] = false; |
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} |
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} |
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} |
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|
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unset( $this->attrs[ $breakpoint ] ); |
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} |
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|
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$this->current_breakpoint = ''; |
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} |
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|
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foreach ( $this->attrs as $prop_id => $prop_value ) { |
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|
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if ( ! empty( $this->css_props[ $prop_id ] ) ) { |
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$prop = $this->css_props[ $prop_id ]; |
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} else { |
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continue; |
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} |
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|
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if ( ! empty( $prop['css_selector'] ) && is_array( $prop['css_selector'] ) ) { |
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foreach ( $prop['css_selector'] as $selector => $definition ) { |
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$this->add_selector_to_styles( array( |
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'prop' => $prop_id, |
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'type' => $prop['type'], |
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'selectoor' => $selector, |
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'definition' => $definition, |
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'value' => $prop_value, |
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) ); |
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} |
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} |
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|
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if ( ! empty( $prop['css_var'] ) && is_array( $prop['css_var'] ) ) { |
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$handler = $this->get_field_handler( $prop['type'], $prop_value ); |
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if ( $handler ) { |
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$variable = $handler->parse_variable( $prop['css_var'] ); |
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if ( ! empty( $variable ) ) { |
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$this->variables = array_merge( $this->variables, $variable ); |
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} |
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} |
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} |
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} |
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|
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return array( |
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'styles' => $this->stringify_selectors( $this->styles ) . $this->get_responsive_styles(), |
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'variables' => $this->stringify_props( $this->variables ), |
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); |
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} |
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|
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/** |
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* Get responsive styles. |
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* |
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* @return string |
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*/ |
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public function get_responsive_styles() { |
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|
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$css = ''; |
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|
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if ( ! empty( $this->responsive_styles ) && is_array( $this->responsive_styles ) ) { |
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foreach ( $this->responsive_styles as $breakpoint => $selectors ) { |
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if ( ! empty( $selectors ) && is_array( $selectors ) ) { |
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$css .= '@media screen and ('; |
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if ( ! empty( $this->breakpoints[ $breakpoint ]['minWidth'] ) ) { |
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$css .= 'min-width: ' . $this->breakpoints[ $breakpoint ]['minWidth'] . 'px'; |
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} |
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if ( ! empty( $this->breakpoints[ $breakpoint ]['maxWidth'] ) ) { |
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$css .= 'max-width: ' . $this->breakpoints[ $breakpoint ]['maxWidth'] . 'px'; |
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} |
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$css .= ') { '; |
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$css .= $this->stringify_selectors( $selectors ); |
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$css .= ' } '; |
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} |
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} |
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} |
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|
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return ' ' . $css; |
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} |
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|
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/** |
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* Adds selector to styles. |
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* |
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* @param array $selector_data Selector data. |
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*/ |
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public function add_selector_to_styles( $selector_data = array() ) { |
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|
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$parsed_rule = $this->generate_css_rules( |
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$selector_data['prop'], |
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$selector_data['type'], |
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$selector_data['definition'], |
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$selector_data['value'] |
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); |
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|
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if ( empty( $parsed_rule ) ) { |
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return; |
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} |
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|
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$parsed_selector = $this->generate_css_selector( $selector_data['selectoor'] ); |
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|
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if ( ! $this->current_breakpoint ) { |
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|
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if ( empty( $this->styles[ $parsed_selector ] ) ) { |
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$this->styles[ $parsed_selector ] = array(); |
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} |
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|
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$this->styles[ $parsed_selector ][] = $parsed_rule; |
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} else { |
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|
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$breakpoint = $this->current_breakpoint; |
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|
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if ( empty( $this->responsive_styles[ $breakpoint ][ $parsed_selector ] ) ) { |
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$this->responsive_styles[ $breakpoint ][ $parsed_selector ] = array(); |
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} |
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|
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$this->responsive_styles[ $breakpoint ][ $parsed_selector ][] = $parsed_rule; |
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} |
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} |
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|
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/** |
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* Generates a valid CSS selector. |
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* |
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* @param string $selector CSS selector to generate. |
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* @return string Parsed CSS selector. |
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*/ |
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public function generate_css_selector( $selector = '' ) { |
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|
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if ( empty( $selector ) ) { |
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return ''; |
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} |
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|
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return Field_Handlers\Base::replace_data( |
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$selector, |
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apply_filters( 'crocoblock/style-manager/css-selector-macros', array( |
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'wrapper' => '.' . $this->class_name, |
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'id' => $this->class_name, |
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), $this ) |
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); |
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} |
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|
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/** |
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* Generates a valid CSS props set for given selector |
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* and actual attributes data. |
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* |
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* @param string $prop_id Property ID (to get it form attributes). |
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* @param string $prop_type Property type to get correct parser. |
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* @param string $def CSS rule definition with macros, which will be replaced with values. |
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* @param array $value Value to parse (optional, if not set, will be taken from attributes). |
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* @return void |
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*/ |
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public function generate_css_rules( $prop_id, $prop_type, $def = '', $value = array() ) { |
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|
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if ( empty($value ) ) { |
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return; |
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} |
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|
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$handler = $this->get_field_handler( $prop_type, $value ); |
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|
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if ( ! $handler ) { |
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return; |
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} |
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|
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return $handler->get_css_rule( $def ); |
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} |
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|
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/** |
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* Get field handler by type. |
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* |
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* @param string $type Field type. |
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* @param mixed $raw_value Raw value to parse. |
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* @return \Crocoblock\Blocks_Style\Field_Handlers\Base|false |
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*/ |
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public function get_field_handler( $type = '', $raw_value = '' ) { |
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|
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switch ( $type ) { |
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|
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case 'range': |
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|
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if ( ! class_exists( '\Crocoblock\Blocks_Style\Field_Handlers\Range' ) ) { |
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require_once dirname( __FILE__ ) . '/field-handlers/range.php'; |
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} |
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|
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return new Field_Handlers\Range( $raw_value ); |
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|
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case 'typography': |
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|
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if ( ! class_exists( '\Crocoblock\Blocks_Style\Field_Handlers\Typography' ) ) { |
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require_once dirname( __FILE__ ) . '/field-handlers/typography.php'; |
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} |
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|
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return new Field_Handlers\Typography( $raw_value ); |
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|
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case 'border': |
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|
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if ( ! class_exists( '\Crocoblock\Blocks_Style\Field_Handlers\Border' ) ) { |
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require_once dirname( __FILE__ ) . '/field-handlers/border.php'; |
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} |
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|
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return new Field_Handlers\Border( $raw_value ); |
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|
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case 'dimensions': |
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|
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if ( ! class_exists( '\Crocoblock\Blocks_Style\Field_Handlers\Dimensions' ) ) { |
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require_once dirname( __FILE__ ) . '/field-handlers/dimensions.php'; |
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} |
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|
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return new Field_Handlers\Dimensions( $raw_value ); |
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|
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default: |
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return new Field_Handlers\Base( $raw_value ); |
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} |
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} |
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|
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/** |
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* Generates a valid CSS selectors set. |
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* |
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* Input format: |
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* array( |
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* 'selector_1' => array( 'css_prop_1:value_1', 'css_prop_2:value_2' ), |
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* 'selector_2' => array( 'css_prop_3:value_3', 'css_prop_4:value_4' ), |
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* ); |
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* |
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* Output format: |
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* '.selector_1 { css_prop_1: value_1; css_prop_2: value_2; } |
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* .selector_2 { css_prop_3: value_3; css_prop_4: value_4; }' |
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* |
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* @param array $selectors |
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* @return void |
| 353 |
*/ |
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public function stringify_selectors( $selectors = array() ) { |
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|
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$css = ''; |
| 357 |
|
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if ( ! empty( $selectors ) && is_array( $selectors ) ) { |
| 359 |
foreach ( $selectors as $selector => $props ) { |
| 360 |
if ( ! empty( $props ) && is_array( $props ) ) { |
| 361 |
$css .= $selector . ' { ' . $this->stringify_props( $props ) . ' } '; |
| 362 |
} |
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} |
| 364 |
} |
| 365 |
|
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return trim( $css ); |
| 367 |
} |
| 368 |
|
| 369 |
/** |
| 370 |
* Generates a valid CSS definitions set. |
| 371 |
* |
| 372 |
* Input format: |
| 373 |
* array( |
| 374 |
* 'css_prop_1: value_1', |
| 375 |
* 'css_prop_2: value_2', |
| 376 |
* ); |
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* |
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* Output format: |
| 379 |
* 'css_prop_1: value_1; css_prop_2: value_2;' |
| 380 |
* |
| 381 |
* @param array $props |
| 382 |
* @return void |
| 383 |
*/ |
| 384 |
public function stringify_props( $props = array() ) { |
| 385 |
|
| 386 |
if ( empty( $props ) || ! is_array( $props ) ) { |
| 387 |
return ''; |
| 388 |
} |
| 389 |
|
| 390 |
return implode( ';', array_map( function( $prop ) { |
| 391 |
return rtrim( $prop, ';' ); |
| 392 |
}, $props ) ) . ';'; |
| 393 |
} |
| 394 |
} |
