Current File : /home/emergentqj/jugement/wp-content/themes/Newspaper/includes/wp_booster/td_css_buffer.php
<?php
/**
* The theme's css buffer. Has a _hook method that is called at the end of this file.
* Class td_css_buffer
*/
class td_css_buffer {
// here we hold the two buffers
private static $css_header_buffer = '';
private static $css_footer_buffer = '';
// this flags is used to make sure we don't add css AFTER it already rendered -> is true ONLY when the buffer was echoed
private static $css_header_buffer_has_rendered = false;
private static $css_footer_buffer_has_rendered = false;
// we use them to make sure we hook ONLY ONCE
private static $css_header_buffer_hooked = false; // is true WHEN the hook was registered to wordpress, NOT when the buffer is rendered
private static $css_footer_buffer_hooked = false;
/**
* - add css to the buffer. Must be called before wp_head hook.
* - if called on wp_head hook, it must be called with priority < 15
* - if defined('TD_SPEED_BOOSTER'), this css will appear at the bottom, else it will appear in the header
* @param $css - the css WITHOUT THE <style> TAG
* @throws ErrorException - if it's called to late you will get this message
*/
static function add_to_header($css) {
if (self::$css_header_buffer_has_rendered === true) {
throw new ErrorException("td_css_buffer::add - css was already rendered when you called td_css_buffer::add() (ex: add was called to late)");
}
self::$css_header_buffer .= "\n" . $css;
self::schedule_css_header_buffer_render();
}
/**
* - adds the css to the footer. Must be called before wp_footer hook
* - if called on wp_head hook, it must be called with priority < 100
* @param $css - the css WITHOUT THE <style> TAG
* @throws ErrorException - if it's called to late you will get this message
*/
static function add_to_footer($css) {
if (self::$css_footer_buffer_has_rendered === true) {
throw new ErrorException("td_css_buffer::add_to_footer - css was already rendered when you called td_css_buffer::add_to_footer() (ex: add was called to late)");
}
self::$css_footer_buffer .= "\n" . $css;
self::schedule_css_footer_buffer_render();
}
/**
* schedules a buffer render for the header CSS. It makes sure to register the hook only once via the flag self::$css_header_buffer_hooked
*/
static function schedule_css_header_buffer_render() {
if (self::$css_header_buffer_hooked === true) {
return;
}
// render the header css section according to the speed booster plugin
if (defined('TD_SPEED_BOOSTER')) {
add_action('wp_footer', array('td_css_buffer', 'on_wp_header_render_header_css'), 100);
} else {
add_action('wp_head', array('td_css_buffer', 'on_wp_header_render_header_css'), 15); //priority 10 is used by the css compiler, that means that on 10 we don't have the css ready
}
self::$css_header_buffer_hooked = true;
}
/**
* schedules a buffer render for the footer CSS. It makes sure to register the hook only once via the flag self::$css_header_buffer_hooked
*/
static function schedule_css_footer_buffer_render() {
if (self::$css_footer_buffer_hooked === true) {
return;
}
// render the bottom section always at the end
add_action('wp_footer', array('td_css_buffer', 'on_wp_footer_render_footer_css'), 100);
self::$css_footer_buffer_hooked = true;
}
/**
* trims and renders the css for the header. If wp-booster is installed, it will render in footer @see td_css_buffer::schedule_css_header_buffer_render
*/
static function on_wp_header_render_header_css() {
self::$css_header_buffer_has_rendered = true;
if (trim(self::$css_header_buffer) != '') {
self::$css_header_buffer = "\n<!-- Header style compiled by theme -->" . "\n\n<style>\n " . self::$css_header_buffer . "\n</style>\n\n";
echo self::$css_header_buffer; // echo out the buffer
}
}
/**
* trims and renderes the css for the footer. as of 21/10/2015 it's used only on categories? When we have to output custom css but we are after wp_header()
*/
static function on_wp_footer_render_footer_css() {
self::$css_footer_buffer_has_rendered = true;
if (trim(self::$css_footer_buffer) != '') {
self::$css_footer_buffer = "\n<!-- Footer style compiled by theme -->" . "\n\n<style>\n " . self::$css_footer_buffer . "\n</style>\n\n";
echo self::$css_footer_buffer; // echo out the buffer
}
}
}
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