%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
function layerslider($id = 0, $filters = '') {
echo LS_Shortcode::handleShortcode(array('id' => $id, 'filters' => $filters));
}
class LS_Shortcode {
// List of already included sliders on page.
// Using to identify duplicates and give them
// a unique slider ID to avoid issues with caching.
public static $slidersOnPage = array();
private function __contruct() {}
/**
* Registers the LayerSlider shortcode.
*
* @since 5.3.3
* @access public
* @return void
*/
public static function registerShortcode() {
if(!shortcode_exists('layerslider')) {
add_shortcode('layerslider', array(__CLASS__, 'handleShortcode'));
}
}
/**
* Handles the shortcode workflow to display the
* appropriate content.
*
* @since 5.3.3
* @access public
* @param array $atts Shortcode attributes
* @return bool True on successful validation, false otherwise
*/
public static function handleShortcode($atts = array()) {
if(self::validateFilters($atts)) {
if($slider = self::validateShortcode($atts)) {
return self::processShortcode($slider);
} else {
$data = '<div style="margin: 10px auto; padding: 10px; border: 2px solid red; border-radius: 5px;">';
$data.= '<strong style="display: block; font-size: 18px;">'.__('LayerSlider encountered a problem while it tried to show your slider.', 'LayerSlider').'</strong>';
$data.= __("Please make sure that you've used the right shortcode or method to insert the slider, and check if the corresponding slider exists and it wasn't deleted previously.", "LayerSlider");
$data.= '</div>';
return $data;
}
}
}
/**
* Validates the provided shortcode filters (if any).
*
* @since 5.3.3
* @access public
* @param array $atts Shortcode attributes
* @return bool True on successful validation, false otherwise
*/
public static function validateFilters($atts = array()) {
// Bail out early and pass the validation
// if there aren't filters provided
if(empty($atts['filters'])) {
return true;
}
// Gather data needed for filters
$pages = explode(',', $atts['filters']);
$currSlug = basename(get_permalink());
$currPageID = (string) get_the_ID();
foreach($pages as $page) {
if(($page == 'homepage' && is_front_page())
|| $currPageID == $page
|| $currSlug == $page
|| in_category($page)
) {
return true;
}
}
// No filters matched,
// return false
return false;
}
/**
* Validates the shortcode parameters and checks
* the references slider.
*
* @since 5.3.3
* @access public
* @param array $atts Shortcode attributes
* @return bool True on successful validation, false otherwise
*/
public static function validateShortcode($atts = array()) {
// Has ID attribute
if(!empty($atts['id'])) {
// Attempt to retrieve the pre-generated markup
// set via the Transients API
if(get_option('ls_use_cache', true)) {
if($markup = get_transient('ls-slider-data-'.intval($atts['id']))) {
$markup['id'] = intval($atts['id']);
$markup['_cached'] = true;
return $markup;
}
}
// Slider exists and isn't deleted
$slider = LS_Sliders::find($atts['id']);
if(!empty($slider) || $slider['flag_deleted'] != '1') {
return $slider;
}
}
return false;
}
public static function processShortcode($slider) {
// Slider ID
$sID = 'layerslider_'.$slider['id'];
// Include init code in the footer?
$condsc = get_option('ls_conditional_script_loading', false) ? true : false;
$footer = get_option('ls_include_at_footer', false) ? true : false;
$footer = $condsc ? true : $footer;
// Check if the returned data is a string,
// indicating that it's a pre-generated
// slider markup retrieved via Transients
if(!empty($slider['_cached'])) { $output = $slider;}
else {
$output = self::generateSliderMarkup($slider);
set_transient('ls-slider-data-'.$slider['id'], $output, HOUR_IN_SECONDS * 6);
}
// Replace slider ID to avoid issues with enabled caching when
// adding the same slider to a page in multiple times
if(array_key_exists($slider['id'], self::$slidersOnPage)) {
$sliderCount = ++self::$slidersOnPage[ $slider['id'] ];
$output['init'] = str_replace($sID, $sID.'_'.$sliderCount, $output['init']);
$output['container'] = str_replace($sID, $sID.'_'.$sliderCount, $output['container']);
} else {
// Add current slider ID to identify duplicates later on
// and give them a unique slider ID to avoid issues with caching.
self::$slidersOnPage[ $slider['id'] ] = 1;
}
// Unify the whole markup after any potential string replacement
$output['markup'] = $output['container'].$output['markup'];
// Filter to override the printed HTML markup
if(has_filter('layerslider_slider_markup')) {
$lsMarkup = apply_filters('layerslider_slider_markup', $lsMarkup);
}
if($footer) {
$GLOBALS['lsSliderInit'][] = $output['init'];
return $output['markup'];
} else {
return $output['init'].$output['markup'];
}
}
public static function generateSliderMarkup($slider = null) {
// Bail out early if no params received
if(!$slider) { return array('init' => '', 'container' => '', 'markup' => ''); }
// Slider and markup data
$id = $slider['id'];
$sliderID = 'layerslider_'.$id;
$slides = $slider['data'];
// Store generated output
$lsInit = ''; $lsContainer = ''; $lsMarkup = '';
// Include slider file
if(is_array($slides)) {
// Get phpQuery
if(!class_exists('phpQuery')) {
libxml_use_internal_errors(true);
include LS_ROOT_PATH.'/helpers/phpQuery.php';
}
include LS_ROOT_PATH.'/config/defaults.php';
include LS_ROOT_PATH.'/includes/slider_markup_init.php';
include LS_ROOT_PATH.'/includes/slider_markup_html.php';
$lsInit = implode('', $lsInit);
$lsContainer = implode('', $lsContainer);
$lsMarkup = implode('', $lsMarkup);
}
// Concatenate output
if(get_option('ls_concatenate_output', false)) {
$lsInit = trim(preg_replace('/\s+/u', ' ', $lsInit));
$lsContainer = trim(preg_replace('/\s+/u', ' ', $lsContainer));
$lsMarkup = trim(preg_replace('/\s+/u', ' ', $lsMarkup));
}
// Bug fix in v5.4.0: Use self closing tag for <source>
$lsMarkup = str_replace('></source>', ' />', $lsMarkup);
// Return formatted data
return array(
'init' => $lsInit,
'container' => $lsContainer,
'markup' => $lsMarkup
);
}
}
Zerion Mini Shell 1.0