first implementation of timeline

refs #224

Some parts have evolved from issue, we should rethink some parts of the design

DependencyInjection/TimelineCompilerClass.php

@@ -0,0 +1,66 @@
+<?php
+
+/*
+ * Copyright (C) 2015 Julien Fastré <julien.fastre@champs-libres.coop>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace Chill\MainBundle\DependencyInjection;
+
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Reference;
+
+/**
+ * Add services taggued with  `name: chill.timeline` to 
+ * timeline_builder service definition
+ *
+ * @author Julien Fastré <julien.fastre@champs-libres.coop>
+ */
+class TimelineCompilerClass implements CompilerPassInterface
+{
+    public function process(ContainerBuilder $container)
+    {
+        if (!$container->hasDefinition('chill.main.timeline_builder')) {
+            throw new \LogicException('service chill.main.timeline_builder '
+                    . 'is not defined.');
+        }
+        
+        $definition = $container->getDefinition(
+            'chill.main.timeline_builder'
+        );
+
+        $taggedServices = $container->findTaggedServiceIds(
+            'chill.timeline'
+        );
+        
+        foreach ($taggedServices as $id => $tagAttributes) {
+            
+            foreach ($tagAttributes as $attributes) {
+                
+                if (!isset($attributes["context"])) {
+                    throw new \LogicException("the 'context' attribute is missing in your ".
+                        "service '$id' definition");
+                }
+
+                $definition->addMethodCall(
+                    'addProvider',
+                    array($attributes["context"], $id)
+                );
+            }
+        }
+    }
+
+}