mirror of
https://gitlab.com/Chill-Projet/chill-bundles.git
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390 lines
14 KiB
PHP
390 lines
14 KiB
PHP
<?php
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/*
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* Copyright (C) 2016 Julien Fastré <julien.fastre@champs-libres.coop>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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namespace Chill\MainBundle\DependencyInjection\Widget;
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use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
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use Symfony\Component\DependencyInjection\ContainerBuilder;
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use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
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use Doctrine\Common\Proxy\Exception\InvalidArgumentException;
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use Symfony\Component\DependencyInjection\Reference;
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use Symfony\Component\DependencyInjection\Definition;
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use Chill\MainBundle\DependencyInjection\Widget\Factory\WidgetFactoryInterface;
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use Chill\MainBundle\DependencyInjection\Widget\HasWidgetFactoriesExtensionInterface;
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/**
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* Compile the configurations and inject required service into container.
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*
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* The widgets are services tagged with :
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*
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* ```
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* { name: chill_widget, alias: my_alias, place: my_place }
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* ```
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*
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* Or, if the tag does not exist or if you need to add some config to your
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* service depending on the config, you should use a `WidgetFactory` (see
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* `WidgetFactoryInterface`.
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*
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* To reuse this compiler pass, simple execute the doProcess metho in your
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* compiler. Example :
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*
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* ```
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* namespace Chill\MainBundle\DependencyInjection\CompilerPass;
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*
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* use Symfony\Component\DependencyInjection\ContainerBuilder;
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* use Chill\MainBundle\DependencyInjection\Widget\AbstractWidgetsCompilerPass;
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* class WidgetsCompilerPass extends AbstractWidgetsCompilerPass {
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*
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* public function process(ContainerBuilder $container)
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* {
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* $this->doProcess($container, 'chill_main', 'chill_main.widgets');
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* }
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* }
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* ```
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*
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*
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*/
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abstract class AbstractWidgetsCompilerPass implements CompilerPassInterface
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{
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private $widgetServices = array();
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/**
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*
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* @var WidgetFactoryInterface[]
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*/
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private $widgetFactories;
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/**
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* The service which will manage the widgets
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*
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* @var string
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*/
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const WIDGET_MANAGER = 'chill.main.twig.widget';
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/**
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* the method wich register the widget into give service.
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*/
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const WIDGET_MANAGER_METHOD_REGISTER = 'addWidget';
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/**
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* the value of the `name` key in service definitions's tag
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*
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* @var string
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*/
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const WIDGET_SERVICE_TAG_NAME = 'chill_widget';
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/**
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* the key used to collect the alias in the service definition's tag.
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* the alias must be
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* injected into the configuration under 'alias' key.
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*
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* @var string
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*/
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const WIDGET_SERVICE_TAG_ALIAS = 'alias';
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/**
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* the key used to collect the authorized place in the service definition's tag
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*
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* @var string
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*/
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const WIDGET_SERVICE_TAG_PLACES = 'place';
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/**
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* the key to use to order widget for a given place
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*/
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const WIDGET_CONFIG_ORDER = 'order';
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/**
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* the key to use to identify widget for a given place
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*/
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const WIDGET_CONFIG_ALIAS = 'widget_alias';
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/**
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* process the configuration and the container to add the widget available
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*
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* @param ContainerBuilder $container
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* @param string $extension the extension of your bundle
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* @param string $containerWidgetConfigParameterName the key under which we can use the widget configuration
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* @throws \LogicException
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* @throws \UnexpectedValueException if the given extension does not implement HasWidgetExtensionInterface
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*/
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public function doProcess(
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ContainerBuilder $container,
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$extension,
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$containerWidgetConfigParameterName
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) {
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if (!$container->hasDefinition(self::WIDGET_MANAGER)) {
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throw new \LogicException("the service ".self::WIDGET_MANAGER." should".
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" be present. It is required by ".self::class);
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}
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$managerDefinition = $container->getDefinition(self::WIDGET_MANAGER);
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// collect the widget factories
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/* @var $extensionClass HasWidgetFactoriesExtensionInterface */
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$extensionClass = $container->getExtension($extension);
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// throw an error if extension does not implement HasWidgetFactoriesExtensionInterface
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if (!$extensionClass instanceof HasWidgetFactoriesExtensionInterface) {
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throw new \UnexpectedValueException(sprintf("The extension for %s "
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. "do not implements %s. You should implement %s on %s",
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$extension,
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HasWidgetFactoriesExtensionInterface::class,
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HasWidgetFactoriesExtensionInterface::class,
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get_class($extensionClass)));
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}
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$this->widgetFactories = $extensionClass->getWidgetFactories();
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// collect the availabled tagged services
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$this->collectTaggedServices($container);
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// collect the widgets and their config :
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$widgetParameters = $container->getParameter($containerWidgetConfigParameterName);
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// and add them to the delegated_block
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foreach($widgetParameters as $place => $widgets) {
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foreach ($widgets as $param) {
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$alias = $param[self::WIDGET_CONFIG_ALIAS];
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// check that the service exists
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if (!array_key_exists($alias, $this->widgetServices)) {
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throw new InvalidConfigurationException(sprintf("The alias %s".
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" is not defined.", $alias));
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}
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// check that the widget is allowed at this place
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if (!$this->isPlaceAllowedForWidget($place, $alias, $container)) {
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throw new InvalidConfigurationException(sprintf(
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"The widget with alias %s is not allowed at place %s",
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$alias,
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$place
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));
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}
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// get the order, eventually corrected
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$order = $this->cacheAndGetOrdering($place, $param[self::WIDGET_CONFIG_ORDER]);
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// register the widget with config to the service, using the method
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// `addWidget`
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if ($this->widgetServices[$alias] instanceof WidgetFactoryInterface) {
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/* @var $factory WidgetFactoryInterface */
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$factory = $this->widgetServices[$alias];
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// get the config (under the key which equals to widget_alias
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$config = isset($param[$factory->getWidgetAlias()]) ?
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$param[$factory->getWidgetAlias()] : array();
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// register the service into the container
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$serviceId =$this->registerServiceIntoContainer($container,
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$factory, $place, $order, $config);
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$managerDefinition->addMethodCall(self::WIDGET_MANAGER_METHOD_REGISTER,
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array(
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$place,
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$order,
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new Reference($serviceId),
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$config
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));
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} else {
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$managerDefinition->addMethodCall(self::WIDGET_MANAGER_METHOD_REGISTER,
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array(
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$place,
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$order,
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new Reference($this->widgetServices[$alias]),
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array() // the config is alway an empty array
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));
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}
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}
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}
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}
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/**
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* register the service into container.
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*
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* @param ContainerBuilder $container
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* @param WidgetFactoryInterface $factory
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* @param string $place
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* @param float $order
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* @param array $config
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* @return string the id of the new service
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*/
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protected function registerServiceIntoContainer(
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ContainerBuilder $container,
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WidgetFactoryInterface $factory,
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$place,
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$order,
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array $config
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) {
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$serviceId = $factory->getServiceId($container, $place, $order, $config);
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$definition = $factory->createDefinition($container, $place,
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$order, $config);
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$container->setDefinition($serviceId, $definition);
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return $serviceId;
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}
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/**
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* cache of ordering by place.
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*
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* @internal used by function cacheAndGetOrdering
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* @var array
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*/
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private $cacheOrdering = array();
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/**
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* check if the ordering has already be used for the given $place and,
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* if yes, correct the ordering by incrementation of 1 until the ordering
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* has not be used.
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*
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* recursive method.
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*
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* @param string $place
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* @param float $ordering
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* @return float
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*/
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private function cacheAndGetOrdering($place, $ordering) {
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// create a key in the cache array if not exists
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if (!array_key_exists($place, $this->cacheOrdering)) {
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$this->cacheOrdering[$place] = array();
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}
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// check if the order exists
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if (array_search($ordering, $this->cacheOrdering[$place])) {
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// if the order exists, increment of 1 and try again
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return $this->cacheAndGetOrdering($place, $ordering + 1);
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} else {
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// cache the ordering
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$this->cacheOrdering[$place][] = $ordering;
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return $ordering;
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}
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}
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/**
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* get the places where the service is allowed
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*
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* @param Definition $definition
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* @return unknown
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*/
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private function isPlaceAllowedForWidget($place, $widgetAlias, ContainerBuilder $container)
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{
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if ($this->widgetServices[$widgetAlias] instanceof WidgetFactoryInterface) {
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if (in_array($place, $this->widgetServices[$widgetAlias]
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->getAllowedPlaces())) {
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return true;
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}
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} else {
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$definition = $container->findDefinition($this->widgetServices[$widgetAlias]);
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foreach($definition->getTag(self::WIDGET_SERVICE_TAG_NAME) as $attrs) {
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$placeValue = $attrs[self::WIDGET_SERVICE_TAG_PLACES];
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if ($placeValue === $place) {
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return true;
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}
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}
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}
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return false;
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}
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/**
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* This method collect all service tagged with `self::WIDGET_SERVICE_TAG`, and
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* add also the widget defined by factories
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*
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* This method also check that the service is correctly tagged with `alias` and
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* `places`, or the factory give a correct alias and more than one place.
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*
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* @param ContainerBuilder $container
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* @throws InvalidConfigurationException
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* @throws InvalidArgumentException
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*/
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protected function collectTaggedServices(ContainerBuilder $container)
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{
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// first, check the service tagged in service definition
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foreach ($container->findTaggedServiceIds(self::WIDGET_SERVICE_TAG_NAME) as $id => $attrs) {
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foreach ($attrs as $attr) {
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// check the alias is set
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if (!isset($attr[self::WIDGET_SERVICE_TAG_ALIAS])) {
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throw new InvalidConfigurationException("you should add an ".self::WIDGET_SERVICE_TAG_ALIAS.
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" key on the service ".$id);
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}
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// check the place is set
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if (!isset($attr[self::WIDGET_SERVICE_TAG_PLACES])) {
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throw new InvalidConfigurationException(sprintf(
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"You should add a %s key on the service %s",
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self::WIDGET_SERVICE_TAG_PLACES,
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$id
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));
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}
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// check the alias does not exists yet
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if (array_key_exists($attr[self::WIDGET_SERVICE_TAG_ALIAS], $this->widgetServices)) {
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throw new InvalidArgumentException("a service has already be defined with the ".
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self::WIDGET_SERVICE_TAG_ALIAS." ".$attr[self::WIDGET_SERVICE_TAG_ALIAS]);
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}
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// register the service as available
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$this->widgetServices[$attr[self::WIDGET_SERVICE_TAG_ALIAS]] = $id;
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}
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}
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// add the services defined by factories
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foreach($this->widgetFactories as $factory) {
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/* @var $factory WidgetFactoryInterface */
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$alias = $factory->getWidgetAlias();
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// check the alias is not empty
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if (empty($alias)) {
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throw new \LogicException(sprintf(
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"the widget factory %s returns an empty alias",
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get_class($factory)));
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}
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// check the places are not empty
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if (!is_array($factory->getAllowedPlaces())) {
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throw new \UnexpectedValueException("the method 'getAllowedPlaces' "
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. "should return a non-empty array. Unexpected value on ".
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get_class($factory));
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}
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if (count($factory->getAllowedPlaces()) == 0) {
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throw new \LengthException("The method 'getAllowedPlaces' should "
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. "return a non-empty array, but returned 0 elements on ".
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get_class($factory).'::getAllowedPlaces()');
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}
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// check the alias does not exists yet
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if (array_key_exists($alias, $this->widgetServices)) {
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throw new InvalidArgumentException("a service has already be defined with the ".
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self::WIDGET_SERVICE_TAG_ALIAS." ".$alias);
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}
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// register the factory as available
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$this->widgetServices[$factory->getWidgetAlias()] = $factory;
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}
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}
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}
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