202 lines
4.4 KiB
PHP
202 lines
4.4 KiB
PHP
<?php
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defined( 'WPINC' ) or die;
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if ( ! class_exists( 'GeneratePress_Pro_CSS' ) ) :
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/**
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* Creates minified css via PHP.
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*
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* @author Carlos Rios
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* Modified by Tom Usborne for GeneratePress
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*/
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class GeneratePress_Pro_CSS {
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/**
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* The css selector that you're currently adding rules to
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*
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* @access protected
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* @var string
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*/
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protected $_selector = '';
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/**
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* Stores the final css output with all of its rules for the current selector.
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*
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* @access protected
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* @var string
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*/
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protected $_selector_output = '';
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/**
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* Stores all of the rules that will be added to the selector
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*
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* @access protected
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* @var string
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*/
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protected $_css = '';
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/**
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* The string that holds all of the css to output
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*
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* @access protected
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* @var string
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*/
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protected $_output = '';
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/**
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* Stores media queries
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*
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* @var null
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*/
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protected $_media_query = null;
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/**
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* The string that holds all of the css to output inside of the media query
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*
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* @access protected
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* @var string
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*/
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protected $_media_query_output = '';
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/**
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* Sets a selector to the object and changes the current selector to a new one
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*
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* @access public
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* @since 1.0
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*
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* @param string $selector - the css identifier of the html that you wish to target
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* @return $this
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*/
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public function set_selector( $selector = '' ) {
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// Render the css in the output string everytime the selector changes
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if( $this->_selector !== '' ){
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$this->add_selector_rules_to_output();
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}
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$this->_selector = $selector;
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return $this;
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}
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/**
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* Adds a css property with value to the css output
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*
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* @access public
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* @since 1.0
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*
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* @param string $property - the css property
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* @param string $value - the value to be placed with the property
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* @param string $og_default - check to see if the value matches the default
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* @param string $unit - the unit for the value (px)
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* @return $this
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*/
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public function add_property( $property, $value, $og_default = false, $unit = false ) {
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// Add our unit to our value if it exists
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if ( $unit && '' !== $unit ) {
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$value = $value . $unit;
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if ( '' !== $og_default ) {
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$og_default = $og_default . $unit;
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}
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}
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// If we don't have a value or our value is the same as our og default, bail
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if ( empty( $value ) || $og_default == $value )
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return false;
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$this->_css .= $property . ':' . $value . ';';
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return $this;
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}
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/**
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* Sets a media query in the class
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*
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* @since 1.1
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* @param string $value
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* @return $this
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*/
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public function start_media_query( $value ) {
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// Add the current rules to the output
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$this->add_selector_rules_to_output();
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// Add any previous media queries to the output
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if ( ! empty( $this->_media_query ) ) {
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$this->add_media_query_rules_to_output();
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}
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// Set the new media query
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$this->_media_query = $value;
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return $this;
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}
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/**
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* Stops using a media query.
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*
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* @see start_media_query()
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*
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* @since 1.1
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* @return $this
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*/
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public function stop_media_query() {
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return $this->start_media_query( null );
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}
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/**
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* Adds the current media query's rules to the class' output variable
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*
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* @since 1.1
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* @return $this
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*/
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private function add_media_query_rules_to_output() {
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if( !empty( $this->_media_query_output ) ) {
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$this->_output .= sprintf( '@media %1$s{%2$s}', $this->_media_query, $this->_media_query_output );
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// Reset the media query output string
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$this->_media_query_output = '';
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}
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return $this;
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}
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/**
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* Adds the current selector rules to the output variable
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*
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* @access private
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* @since 1.0
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*
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* @return $this
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*/
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private function add_selector_rules_to_output() {
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if( !empty( $this->_css ) ) {
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$this->_selector_output = $this->_selector;
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$selector_output = sprintf( '%1$s{%2$s}', $this->_selector_output, $this->_css );
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// Add our CSS to the output
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if ( ! empty( $this->_media_query ) ) {
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$this->_media_query_output .= $selector_output;
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$this->_css = '';
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} else {
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$this->_output .= $selector_output;
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}
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// Reset the css
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$this->_css = '';
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}
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return $this;
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}
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/**
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* Returns the minified css in the $_output variable
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*
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* @access public
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* @since 1.0
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*
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* @return string
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*/
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public function css_output()
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{
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// Add current selector's rules to output
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$this->add_selector_rules_to_output();
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// Output minified css
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return $this->_output;
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}
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}
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endif; |