_is_widget_on_page = false;
$this->_is_head_script_loaded = false;
$this->plugin_name = plugin_basename(__FILE__);
$this->plugin_directory = plugin_dir_path(__FILE__);
$this->plugin_url = trailingslashit(WP_PLUGIN_URL . '/' . dirname(plugin_basename(__FILE__)));
$this->settings = $wpdb->get_row("select * from ".$wpdb->prefix."_taboola_settings limit 1");
$this->tbl_taboola_settings = $wpdb->prefix . '_taboola_settings';
//activation function
register_activation_hook($this->plugin_name, array(&$this, 'activate'));
// Enable sidebar widgets
if($this->settings != NULL && !empty($this->settings->publisher_id)){
//register Taboola widget
add_action('widgets_init',
function(){
return register_widget("WP_Widget_Taboola");
}
);
}
//$this->should_place_tag_outside_of_content = $this->settings->out_of_content_enabled;
if (is_admin()) {
//add menu for plugin
add_action( 'admin_menu', array(&$this, 'admin_generate_menu') );
add_filter('plugin_action_links', array(&$this, 'plugin_action_links'), 10, 2 );
} else {
if($this->settings != NULL){
add_action('wp_head', array(&$this, 'taboola_header_loader_inject'));
add_action('wp_footer', array(&$this, 'taboola_footer_loader_js'));
add_filter('the_content', array(&$this, 'load_taboola_content'));
}
}
}
function plugin_action_links($links, $file) {
static $this_plugin;
if (!$this_plugin) {
$this_plugin = plugin_basename(__FILE__);
}
if ($file == $this_plugin) {
$settings_link = 'Settings';
array_unshift($links, $settings_link);
}
return $links;
}
private function should_show_content_widget(){
$retVal = ((trim($this->settings->publisher_id) != '') && is_single() && $this->settings->first_bc_enabled && trim($this->settings->first_bc_widget_id) != '');
return $retVal;
}
private function should_show_sidebar_widget(){
$retVal = ((trim($this->settings->publisher_id) != '') && is_active_widget( false, false, TABOOLA_WIDGET_BASE_ID, true ));
return $retVal;
}
// Determine if a taboola widget should be added somewhere on the current page (content or sidebar)
function is_widget_on_page(){
return $this->should_show_content_widget() || $this->should_show_sidebar_widget();
}
function get_page_type(){
$page_type='article';
if (is_front_page()){
$page_type='home';
}else if (is_category() || is_archive() || is_search()){
$page_type='category';
}
return $page_type;
}
// return the head loader script
function taboola_header_loader_js() {
$head_string = "";
// Only adding the loader if a widget is going to be placed on the page.
if ($this->is_widget_on_page()){
$stringParams = array(
'{{PUBLISHER_ID}}' => $this->settings->publisher_id,
'{{PAGE_TYPE}}' => $this->get_page_type(),
'{{WORDPRESS_VERSION}}' => get_bloginfo('version'),
'{{PLUGIN_VERSION}}' => TABOOLA_PLUGIN_VERSION
);
$scriptWrapper = new JavaScriptWrapper("loaderInjectionScript.js",$stringParams);
$head_string = $scriptWrapper->getScripMarkupString();
}
return $head_string;
}
// This function is used for the hook action, injects the header content to the tag.
function taboola_header_loader_inject(){
echo $this->taboola_header_loader_js();
}
function taboola_footer_loader_js() {
// Only adding flush script if a widget is going to be placed on the page.
if ( $this->is_widget_on_page() ){
$flushInjectionScript = new JavaScriptWrapper('flushInjectionScript.js',array());
echo $flushInjectionScript->getScripMarkupString();
}
}
function load_taboola_content($content)
{
$taboola_content = array();
if ($this->should_show_content_widget()){
$firstWidgetParams = array('{{WIDGET_ID}}' => $this->settings->first_bc_widget_id,
'{{CONTAINER}}' => 'taboola-below-article',
'{{PLACEMENT}}' => 'below-article');
$firstWidgetScript = new JavaScriptWrapper("widgetInjectionScript.js",$firstWidgetParams);
$taboola_content[TABOOLA_CONTENT_FORMAT_HTML][] = "";
$taboola_content[TABOOLA_CONTENT_FORMAT_SCRIPT][] = $firstWidgetScript;
// Adding the 2nd widget if needed
if($this->settings->second_bc_enabled && trim($this->settings->second_bc_widget_id) != ''){
$secondWidgetParams = array('{{WIDGET_ID}}' => $this->settings->second_bc_widget_id,
'{{CONTAINER}}' => 'taboola-below-article-second',
'{{PLACEMENT}}' => 'below-article-2nd');
$secondWidgetScript = new JavaScriptWrapper("widgetInjectionScript.js",$secondWidgetParams);
$taboola_content[TABOOLA_CONTENT_FORMAT_HTML][] = "";
$taboola_content[TABOOLA_CONTENT_FORMAT_SCRIPT][] = $secondWidgetScript;
}
$content = $this->embed_taboola_content_location($content,$taboola_content,trim($this->settings->location_string));
}
return $content;
}
// Extract the taboola content in the required format:
// String - for injecting on the servr side
// Script or HTML - for injecting on the client side
function format_taboola_content($taboola_content,$format){
$ret_val = null;
switch($format){
case TABOOLA_CONTENT_FORMAT_STRING:
$result_string = join("",$taboola_content[TABOOLA_CONTENT_FORMAT_HTML]).
"";
$ret_val = $result_string;
break;
// script or html
default:
$ret_val = str_replace("\n","",join("",$taboola_content[$format]));
break;
}
return $ret_val;
}
// Do the actual logic of choosing where to place the taboola content based on the "location" attribute
function embed_taboola_content_location($content, $taboola_content, $location){
$do_default = true;
if (isset($location) && $location != ''){
$first_char = substr($location,0,1);
// DIV/XPATH provided for JS handling
if ($first_char == JS_MARKER){
$full_indicator = substr($location,0,strlen(JS_INDICATOR));
if ($full_indicator == JS_INDICATOR){
$xpath = substr($location,strlen(JS_INDICATOR));
$scriptWrapper = new JavaScriptWrapper("js_inject.min.js",array(
"{{HTML}}" => $this->format_taboola_content($taboola_content,TABOOLA_CONTENT_FORMAT_HTML),
"{{SCRIPT}}" => $this->format_taboola_content($taboola_content,TABOOLA_CONTENT_FORMAT_SCRIPT))
);
$scriptWrapper->appendScript("injectWidgetByXpath('".$xpath."');");
$content = $content."";
$do_default = false;
}
// server side selector provided (see simple_html_dom selectors https://simplehtmldom.sourceforge.net/manual.htm)
// basically it's CSS selectors like in jQuery
} else{
require_once('simple_html_dom.php');
$html_doc = str_get_html($content);
$target_location = $html_doc->find($location,0);
// if the location was found within the html content
if (isset($target_location) && is_object($target_location)){
// adding taboola content AFTER the target location
$target_location->outertext = $target_location->outertext.$this->format_taboola_content($taboola_content,TABOOLA_CONTENT_FORMAT_STRING);
$content = $html_doc;
$do_default = false;
}
}
// tag is placed outside of content in order to allow "read more" functionality.
}elseif ($this->settings->out_of_content_enabled){
$scriptWrapper = new JavaScriptWrapper("js_inject.min.js",array(
"{{HTML}}" => $this->format_taboola_content($taboola_content,TABOOLA_CONTENT_FORMAT_HTML),
"{{SCRIPT}}" => $this->format_taboola_content($taboola_content,TABOOLA_CONTENT_FORMAT_SCRIPT))
);
$scriptWrapper->appendScript("injectWidgetByMarker('tbmarker');");
$content = $content."";
$do_default = false;
}
// Default - add to the end of the content
if ($do_default){
$content = $content.$this->format_taboola_content($taboola_content,TABOOLA_CONTENT_FORMAT_STRING);
}
return $content;
}
function admin_generate_menu(){
global $current_user;
add_menu_page('Taboola', 'Taboola', 'manage_options', 'taboola_widget', array(&$this, 'admin_taboola_settings'), $this->plugin_url.'img/taboola_icon.png', 110);
}
function admin_taboola_settings(){
global $wpdb;
$settings = $wpdb->get_row("select * from ".$wpdb->prefix."_taboola_settings limit 1");
$taboola_errors = array();
if($_SERVER['REQUEST_METHOD'] == 'POST'){
if(trim($_POST['publisher_id']) == ''){
$taboola_errors[] = "Please add a 'Publisher ID' in order to apply changes to your widgets";
}
if((isset($_POST['first_bc_enabled']) && trim($_POST['first_bc_widget_id']) == '') ||
(isset($_POST['second_bc_enabled']) && trim($_POST['second_bc_widget_id']) == '')
){
$taboola_errors[] = "Please add a 'Widget ID' in order to apply changes to your widgets";
}
if (trim($_POST['location_string']) != '' && !$this->is_location_string_valid($_POST['location_string'])){
$taboola_errors[] = "Location string not valid, please contact your Taboola account manager to get a valid location string";
}
if(count($taboola_errors) == 0){
$data = array(
"publisher_id" => trim($_POST['publisher_id']),
"first_bc_enabled" => isset($_POST['first_bc_enabled']) ? true : false,
"first_bc_widget_id" => trim($_POST['first_bc_widget_id']),
"second_bc_enabled" => isset($_POST['second_bc_enabled']) ? true : false,
"second_bc_widget_id" => trim($_POST['second_bc_widget_id']),
"location_string" => trim($_POST['location_string']),
"out_of_content_enabled" => isset($_POST['out_of_content_enabled']) ? true : false
);
//var_dump($settings);
if($settings == NULL){
$wpdb->insert($this->tbl_taboola_settings, $data, null, null);
} else {
$wpdb->update($this->tbl_taboola_settings, $data, array('id' => $settings->id));
}
}
$settings = $wpdb->get_row("select * from ".$wpdb->prefix."_taboola_settings limit 1");
}
include_once('settings.php');
}
function is_location_string_valid($location_string){
// TODO:: validate the location string
return true;
}
function activate(){
global $wpdb;
require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
$settings_table = $this->tbl_taboola_settings;
//check mysql version
if (function_exists('mysql_get_server_info') && version_compare(mysql_get_server_info(), '4.1.0', '>=')) {
if (!empty($wpdb->charset))
$charset_collate = "DEFAULT CHARACTER SET $wpdb->charset";
if (!empty($wpdb->collate))
$charset_collate .= " COLLATE $wpdb->collate";
}
//settings table structure
$sql_table_settings = "
CREATE TABLE `" . $wpdb->prefix . "_taboola_settings` (
`id` INT NOT NULL AUTO_INCREMENT ,
`publisher_id` VARCHAR(255) DEFAULT NULL,
`first_bc_enabled` TINYINT(1) NOT NULL DEFAULT FALSE,
`first_bc_widget_id` VARCHAR(255) DEFAULT NULL,
`first_bc_custom_css` TEXT DEFAULT NULL,
`second_bc_enabled` TINYINT(1) NOT NULL DEFAULT FALSE,
`second_bc_widget_id` VARCHAR(255) DEFAULT NULL,
`second_bc_custom_css` TEXT DEFAULT NULL,
`location_string` TEXT DEFAULT NULL,
`out_of_content_enabled` TINYINT(1) NOT NULL DEFAULT TRUE,
PRIMARY KEY (`id`)
)" . $charset_collate . ";";
// create/update the table
dbDelta($sql_table_settings);
}
}
}
global $taboolaWP;
$taboolaWP = new TaboolaWP();
//