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<?php |
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/** |
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* @package CleverStyle Framework |
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* @author Nazar Mokrynskyi <[email protected]> |
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* @copyright Copyright (c) 2014-2017, Nazar Mokrynskyi |
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* @license MIT License, see license.txt |
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*/ |
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namespace cs\Page; |
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use |
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cs\Config, |
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cs\Language, |
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cs\Page, |
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cs\Request, |
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cs\Singleton, |
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h; |
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/** |
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* Meta class for generation of various meta tags |
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* |
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* @method $this og(string $property, string|string[] $content) |
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*/ |
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class Meta { |
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use |
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Singleton; |
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/** |
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* Is used as <head prefix="$head_prefix"> |
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* @var string |
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*/ |
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public $head_prefix = ''; |
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/** |
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* If false - <head> will not be added automatically, and should be in template if needed |
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* @var bool |
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*/ |
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public $no_head = false; |
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protected $links = ''; |
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protected $og_data = []; |
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protected $og_type = ''; |
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protected $image_src = false; |
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/** |
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* Common wrapper to add all necessary meta tags with images |
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* |
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* @param string|string[] $images |
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* |
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* @return Meta |
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*/ |
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public function image ($images) { |
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if (!$images) { |
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return $this; |
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} |
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$images = (array)$images; |
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if (!$this->image_src && $images[0]) { |
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$this->image_src = true; |
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$this->links .= h::link( |
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[ |
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'href' => $images[0], |
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'rel' => 'image_src' |
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] |
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); |
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} |
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$this->__call('og', ['image', $images]); |
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return $this; |
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} |
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/** |
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* Common wrapper for generation of various Open Graph protocol meta tags |
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* |
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* @param string $type |
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* @param mixed[] $params |
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* |
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* @return Meta |
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*/ |
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public function __call ($type, $params) { |
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if (!$params) { |
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$this->og_type = $type; |
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$this->og_data['type'] = h::meta( |
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[ |
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'property' => 'og:type', |
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'content' => $type |
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] |
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); |
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return $this; |
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} |
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if (!$params[0]) { |
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return $this; |
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} |
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if (is_array($params[1])) { |
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foreach ($params[1] as $p) { |
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$this->__call($type, [$params[0], $p]); |
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} |
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} elseif ($params[1] || $params[1] === 0) { |
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if (!isset($this->og_data[$params[0]])) { |
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$this->og_data[$params[0]] = ''; |
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} |
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$this->og_data[$params[0]] .= h::meta( |
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[ |
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'property' => "$type:$params[0]", |
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'content' => $params[1] |
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] |
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); |
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} |
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return $this; |
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} |
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/** |
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* Generates Open Graph protocol information, and puts it into HTML |
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* |
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* Usually called by system itself, there is no need to call it manually |
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*/ |
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public function render () { |
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$og = &$this->og_data; |
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$this->fill_required_properties($og); |
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$prefix = 'og: http://ogp.me/ns# fb: http://ogp.me/ns/fb#'; |
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$type = explode('.', $this->og_type, 2)[0]; |
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switch ($type) { |
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case 'article': |
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case 'blog': |
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case 'book': |
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case 'profile': |
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case 'video': |
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case 'website': |
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$prefix .= " $type: http://ogp.me/ns/$type#"; |
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break; |
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} |
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$Page = Page::instance(); |
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$Page->Head = |
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$Page->Head. |
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implode('', $og). |
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$this->links; |
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if (!$this->no_head) { |
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$Page->Head = h::head( |
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$Page->Head, |
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[ |
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'prefix' => $prefix.$this->head_prefix |
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] |
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); |
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} |
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} |
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/** |
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* If type, title and other important properties were not specified - try to guess and fill them automatically |
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* |
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* @param array $og |
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*/ |
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protected function fill_required_properties (&$og) { |
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$Page = Page::instance(); |
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if (!@$og['title']) { |
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$this->og('title', $Page->Title); |
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} |
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if (!@$og['description']) { |
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$this->og('description', $Page->Description); |
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} |
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$Config = Config::instance(); |
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if (!@$og['url']) { |
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$Request = Request::instance(); |
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/** @noinspection NestedTernaryOperatorInspection */ |
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$this->og( |
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'url', |
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$Request->home_page |
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? $Config->base_url() |
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: ($Page->canonical_url ?: $Config->base_url().'/'.$Request->path_normalized) |
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); |
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} |
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if (!@$og['site_name']) { |
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$this->og('site_name', $Config->core['site_name']); |
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} |
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if (!@$og['type']) { |
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$this->og('type', 'website'); |
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} |
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$this->fill_required_properties_multilingual($og); |
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} |
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/* |
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* @param array $og |
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*/ |
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protected function fill_required_properties_multilingual (&$og) { |
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$Config = Config::instance(); |
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if (!$Config->core['multilingual']) { |
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return; |
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} |
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$L = Language::instance(); |
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if (!@$og['locale']) { |
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$this->og('locale', $L->clocale); |
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} |
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if ( |
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!@$og['locale:alternate'] && |
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count($Config->core['active_languages']) > 1 |
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) { |
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foreach ($Config->core['active_languages'] as $lang) { |
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if ($lang != $L->clanguage) { |
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$this->og('locale:alternate', $L->get('clocale', $lang)); |
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} |
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} |
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} |
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} |
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} |
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nazar-pc /
CleverStyle-Framework
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