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<?php

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namespace Nextend\Framework\Asset;

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use Nextend\Framework\Data\Data;

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use Nextend\Framework\PageFlow;

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use Nextend\Framework\Plugin;

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use Nextend\Framework\View\Html;

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/**

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* Class Manager

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class AssetManager {

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/**

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* Helper to safely store AssetManager related optimization data

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* @var Data

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public static $stateStorage;

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/**

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* @var CSS\Asset

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public static $css;

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private static $cssStack = array();

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/**

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* @var Css\Less\Asset

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public static $less;

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private static $lessStack = array();

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/**

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* @var Js\Asset

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public static $js;

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private static $jsStack = array();

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/**

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* @var Fonts\Google\Asset

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public static $googleFonts;

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/**

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* @var Image\Asset

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public static $image;

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private static $imageStack = array();

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private static $googleFontsStack = array();

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public static $cacheAll = true;

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public static $cachedGroups = array();

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public static function getInstance() {

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static $instance = null;

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if (null === $instance) {

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$instance = new self();

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self::createStack();

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Plugin::doAction('n2_assets_manager_started');

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}

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return $instance;

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}

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public static function createStack() {

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self::$stateStorage = new Data();

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self::$css = new Css\Asset();

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array_unshift(self::$cssStack, self::$css);

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self::$less = new Css\Less\Asset();

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array_unshift(self::$lessStack, self::$less);

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self::$js = new Js\Asset();

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array_unshift(self::$jsStack, self::$js);

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self::$googleFonts = new Fonts\Google\Asset();

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array_unshift(self::$googleFontsStack, self::$googleFonts);

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self::$image = new Image\Asset();

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array_unshift(self::$imageStack, self::$image);

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}

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public static function removeStack() {

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if (count(self::$cssStack) > 0) {

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self::$stateStorage = new Data();

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/**

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* @var $previousCSS Css\Asset

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* @var $previousLESS Css\Less\Asset

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* @var $previousJS Js\Asset

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* @var $previousGoogleFons Fonts\Google\Asset

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* @var $previousImage Image\Asset

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$previousCSS = array_shift(self::$cssStack);

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self::$css = self::$cssStack[0];

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$previousLESS = array_shift(self::$lessStack);

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self::$less = self::$lessStack[0];

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$previousJS = array_shift(self::$jsStack);

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self::$js = self::$jsStack[0];

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$previousGoogleFons = array_shift(self::$googleFontsStack);

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self::$googleFonts = self::$googleFontsStack[0];

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$previousImage = array_shift(self::$imageStack);

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self::$image = self::$imageStack[0];

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return array(

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'css' => $previousCSS->serialize(),

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'less' => $previousLESS->serialize(),

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'js' => $previousJS->serialize(),

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'googleFonts' => $previousGoogleFons->serialize(),

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'image' => $previousImage->serialize()

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);

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}

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echo "Too much remove stack on the asset manager...";

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PageFlow::exitApplication();

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}

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public static function enableCacheAll() {

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self::$cacheAll = true;

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}

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public static function disableCacheAll() {

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self::$cacheAll = false;

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}

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public static function addCachedGroup($group) {

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if (!in_array($group, self::$cachedGroups)) {

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self::$cachedGroups[] = $group;

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}

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}

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public static function loadFromArray($array) {

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self::$css->unSerialize($array['css']);

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self::$less->unSerialize($array['less']);

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self::$js->unSerialize($array['js']);

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self::$googleFonts->unSerialize($array['googleFonts']);

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self::$image->unSerialize($array['image']);

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}

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/**

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* @param $path

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* @return array|string contains already escaped data

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public static function getCSS($path = false) {

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if (self::$css) {

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if ($path) {

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return self::$css->get();

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}

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return self::$css->getOutput();

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}

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return '';

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}

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/**

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* @param $path

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* @return array|string contains already escaped data

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public static function getJs($path = false) {

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if (self::$js) {

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if ($path) {

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return self::$js->get();

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}

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return self::$js->getOutput();

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}

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return '';

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}

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public static function generateAjaxCSS() {

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return Html::style(self::$css->getAjaxOutput());

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}

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public static function generateAjaxJS() {

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return self::$js->getAjaxOutput();

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}

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}

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