Add UIBlocks to twig (WIP)

sources/application/TwigBase/UI/Component/Html/UIHtmlNode.php

@@ -0,0 +1,31 @@
+<?php
+/**
+ * @copyright   Copyright (C) 2010-2021 Combodo SARL
+ * @license     http://opensource.org/licenses/AGPL-3.0
+ */
+
+
+namespace Combodo\iTop\Application\TwigBase\UI\Component;
+
+use Combodo\iTop\Application\TwigBase\UI\UIBlockHelper;
+use Twig\Compiler;
+use Twig\Node\Node;
+
+class UIHtmlNode extends Node
+{
+	public function __construct($oBody, $lineno = 0, $tag = null)
+	{
+		parent::__construct(['body' => $oBody], [], $lineno, $tag);
+	}
+
+	public function compile(Compiler $compiler)
+	{
+		$compiler
+			->addDebugInfo($this)
+			->write("ob_start();\n")
+			->subcompile($this->getNode('body'))
+			->write("\$sHtml = ob_get_contents();\n")
+			->write("ob_end_clean();\n")
+			->write(UIBlockHelper::GetParentBlock()."->AddSubBlock(new Combodo\\iTop\\Application\\UI\\Base\\Component\\Html\\Html(\$sHtml));\n");
+	}
+}