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<?php |
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/** |
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* @package WPEmerge |
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* @author Atanas Angelov <[email protected]> |
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* @copyright 2017-2019 Atanas Angelov |
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* @license https://www.gnu.org/licenses/gpl-2.0.html GPL-2.0 |
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* @link https://wpemerge.com/ |
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*/ |
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namespace WPEmerge\View; |
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use Closure; |
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use WPEmerge\Helpers\Handler; |
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use WPEmerge\Helpers\HandlerFactory; |
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use WPEmerge\Helpers\MixedType; |
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/** |
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* Provide general view-related functionality. |
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*/ |
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class ViewService { |
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/** |
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* View engine. |
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* |
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* @var ViewEngineInterface |
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*/ |
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protected $engine = null; |
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/** |
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* Handler factory. |
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* |
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* @var HandlerFactory |
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*/ |
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protected $handler_factory = null; |
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/** |
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* Global variables. |
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* |
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* @var array |
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*/ |
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protected $globals = []; |
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/** |
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* View composers. |
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* |
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* @var array |
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*/ |
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protected $composers = []; |
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/** |
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* Constructor. |
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* |
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* @codeCoverageIgnore |
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* @param ViewEngineInterface $engine |
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* @param HandlerFactory $handler_factory |
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*/ |
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public function __construct( ViewEngineInterface $engine, HandlerFactory $handler_factory ) { |
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$this->engine = $engine; |
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$this->handler_factory = $handler_factory; |
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} |
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/** |
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* Get global variables. |
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* |
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* @return array |
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*/ |
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public function getGlobals() { |
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return $this->globals; |
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} |
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/** |
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* Set a global variable. |
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* |
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* @param string $key |
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* @param mixed $value |
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* @return void |
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*/ |
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public function addGlobal( $key, $value ) { |
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$this->globals[ $key ] = $value; |
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} |
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/** |
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* Set an array of global variables. |
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* |
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* @param array $globals |
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* @return void |
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*/ |
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public function addGlobals( $globals ) { |
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foreach ( $globals as $key => $value ) { |
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$this->addGlobal( $key, $value ); |
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} |
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} |
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/** |
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* Get view composer. |
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* |
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* @param string $view |
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* @return array<Handler> |
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*/ |
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public function getComposersForView( $view ) { |
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$view = $this->engine->canonical( $view ); |
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$composers = []; |
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foreach ( $this->composers as $composer ) { |
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if ( in_array( $view, $composer['views'], true ) ) { |
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$composers[] = $composer['composer']; |
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} |
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} |
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return $composers; |
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} |
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/** |
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* Add view composer. |
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* |
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* @param string|array<string> $views |
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* @param string|Closure $composer |
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* @return void |
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*/ |
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public function addComposer( $views, $composer ) { |
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$views = array_map( function ( $view ) { |
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return $this->engine->canonical( $view ); |
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}, MixedType::toArray( $views ) ); |
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$handler = $this->handler_factory->make( $composer, 'compose', '\\App\\ViewComposers\\' ); |
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$this->composers[] = [ |
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'views' => $views, |
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'composer' => $handler, |
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]; |
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} |
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/** |
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* Composes a view instance with contexts in the following order: Global, Composers, Local. |
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* |
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* @param ViewInterface $view |
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* @return void |
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*/ |
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public function compose( ViewInterface $view ) { |
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$global = ['global' => $this->getGlobals()]; |
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$local = $view->getContext(); |
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$view->with( $global ); |
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$composers = $this->getComposersForView( $view->getName() ); |
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foreach ( $composers as $composer ) { |
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$composer->execute( $view ); |
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} |
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$view->with( $local ); |
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} |
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/** |
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* Create a view instance. |
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* |
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* @param string|array<string> $views |
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* @return ViewInterface |
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*/ |
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public function make( $views ) { |
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return $this->engine->make( MixedType::toArray( $views ) ); |
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} |
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/** |
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* Trigger core hooks for a partial, if any. |
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* |
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* @codeCoverageIgnore |
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* @param string $name |
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* @return void |
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*/ |
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public function triggerPartialHooks( $name ) { |
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$core_partial = '/^(header|sidebar|footer)(?:-(.*?))?(\.|$)/i'; |
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if ( preg_match( $core_partial, $name, $matches ) && apply_filters( "wpemerge.partials.{$matches[1]}.hook", true ) ) { |
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do_action( "get_{$matches[1]}", $matches[2] ); |
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} |
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} |
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/** |
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* Render a view. |
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* |
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* @codeCoverageIgnore |
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* @param string|array<string> $views |
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* @param array<string, mixed> $context |
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* @return void |
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*/ |
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public function render( $views, $context = [] ) { |
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$view = $this->make( $views )->with( $context ); |
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$this->triggerPartialHooks( $view->getName() ); |
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echo $view->toString(); |
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} |
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} |
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htmlburger /
wpemerge
