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<?php |
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/** |
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* @package midcom.templating |
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* @author CONTENT CONTROL http://www.contentcontrol-berlin.de/ |
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* @copyright CONTENT CONTROL http://www.contentcontrol-berlin.de/ |
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* @license http://www.gnu.org/licenses/gpl.html GNU General Public License |
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*/ |
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namespace midcom\templating; |
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use midcom_services_cache_module_content; |
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use midcom_core_context; |
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use midgard_style; |
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use midgard_element; |
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use midcom_db_style; |
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use midcom_error_forbidden; |
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/** |
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* Loader class for db-based templates |
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* |
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* @package midcom.templating |
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*/ |
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class dbloader extends loader |
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{ |
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private $dbstyle; |
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/** |
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* @var midcom_services_cache_module_content |
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*/ |
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private $cache; |
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public function __construct(midcom_services_cache_module_content $cache) |
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{ |
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$this->cache = $cache; |
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} |
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public function get_element(string $name, bool $scope_from_path) : ?string |
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{ |
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$scope = 0; |
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if ($scope_from_path) { |
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// we have full qualified path to element |
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$matches = []; |
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if (preg_match("|(.*)/(.*)|", $name, $matches)) { |
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$styleid = midcom_db_style::id_from_path($matches[1]); |
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$name = $matches[2]; |
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} |
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$scope = $styleid ?? $this->dbstyle; |
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} else { |
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try { |
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$root_topic = midcom_core_context::get()->get_key(MIDCOM_CONTEXT_ROOTTOPIC); |
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if ($root_topic->style) { |
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$scope = midcom_db_style::id_from_path($root_topic->style); |
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} |
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} catch (midcom_error_forbidden $e) { |
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$e->log(); |
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} |
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} |
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if ($scope && $content = $this->get_element_in_styletree($scope, $name)) { |
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return $content; |
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} |
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return parent::get_element($name, $scope_from_path); |
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} |
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/** |
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* Returns a style element that matches $name and is in style $id. |
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* It also returns an element if it is not in the given style, |
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* but in one of its parent styles. |
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*/ |
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private function get_element_in_styletree(int $id, string $name) : ?string |
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{ |
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$cache_key = $id . '::' . $name; |
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if (array_key_exists($cache_key, $this->cache)) { |
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return $this->cache[$cache_key]; |
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} |
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$element_mc = midgard_element::new_collector('style', $id); |
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$element_mc->set_key_property('guid'); |
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$element_mc->add_value_property('value'); |
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$element_mc->add_constraint('name', '=', $name); |
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$element_mc->execute(); |
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if ($element_guid = key($element_mc->list_keys())) { |
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$this->cache->register($element_guid); |
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return $this->add_to_cache($cache_key, $element_mc->get_subkey($element_guid, 'value')); |
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} |
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// No such element on this level, check parents |
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$style_mc = midgard_style::new_collector('id', $id); |
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$style_mc->set_key_property('guid'); |
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$style_mc->add_value_property('up'); |
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$style_mc->add_constraint('up', '>', 0); |
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$style_mc->execute(); |
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if ($style_guid = key($style_mc->list_keys())) { |
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$this->cache->register($style_guid); |
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$up = $style_mc->get_subkey($style_guid, 'up'); |
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return $this->get_element_in_styletree($up, $name); |
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} |
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$this->cache[$cache_key] = null; |
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return $this->cache[$cache_key]; |
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} |
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/** |
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* Initializes style sources |
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*/ |
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public function initialize(midcom_core_context $context, ?string $style) |
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{ |
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$this->dbstyle = 0; |
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// get user defined style for component |
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// style inheritance |
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// should this be cached somehow? |
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if ($style && $this->dbstyle = midcom_db_style::id_from_path($style)) { |
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if ($substyle = $context->get_key(MIDCOM_CONTEXT_SUBSTYLE)) { |
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$chain = explode('/', $substyle); |
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foreach ($chain as $stylename) { |
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if ($_subst_id = midcom_db_style::id_from_path($stylename, $this->dbstyle)) { |
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$this->dbstyle = $_subst_id; |
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} |
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} |
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} |
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} |
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parent::initialize($context, $style); |
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} |
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} |
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flack /
openpsa
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