Implemented new dynamic LinkViewhelper.

Classes/ViewHelpers/DynLinkViewHelper.php

+<?php
+
+/***************************************************************
+ *  Copyright notice
+ *
+ *  (c) 2012 Andy Hausmann <hi@andy-hausmann.de>
+ *
+ *  All rights reserved
+ *
+ *  This script is part of the TYPO3 project. The TYPO3 project is
+ *  free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  The GNU General Public License can be found at
+ *  http://www.gnu.org/copyleft/gpl.html.
+ *
+ *  This script 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 General Public License for more details.
+ *
+ *  This copyright notice MUST APPEAR in all copies of the script!
+ ***************************************************************/
+
+/**
+ *
+ * A view helper for dynamic rendering of links.
+ *
+ * @author Andy Hausmann <hi@andy-hausmann.de>
+ * @package flexslider
+ * @license http://www.gnu.org/licenses/gpl.html GNU General Public License, version 3 or later
+ */
+class Tx_Flexslider_ViewHelpers_DynLinkViewHelper extends Tx_Fluid_Core_ViewHelper_AbstractTagBasedViewHelper
+{
+
+	/**
+	 * @var string
+	 */
+	protected $tagName = 'a';
+
+	/**
+	 * @var array
+	 */
+	protected $paramLabels = array();
+
+	/**
+	 * Arguments initialization
+	 *
+	 * @return void
+	 */
+	public function initializeArguments()
+	{
+		$this->registerUniversalTagAttributes();
+		$this->registerArgument('arguments', 'array', 'Given arguments by Fluid call as an array.');
+		$this->registerArgument('href', 'string', 'Link href.');
+		$this->paramLabels = array('href', 'target', 'class', 'title');
+	}
+
+	/**
+	 * Checks and processes the given link parameters.
+	 *
+	 * @param string $link Output from TYPO3 link wizard.
+	 * @return bool Returns true if it is possible to build a link.
+	 */
+	protected function processLinkParams($link)
+	{
+		$paramDataArr = explode(' ', $link);
+		// Combine labels and values into one array
+		$paramDataArr = Tx_Flexslider_Utility_Div::combineArray($this->paramLabels, $paramDataArr, false);
+		// Save link data into ViewHelper arguments
+		$this->setArguments($paramDataArr);
+
+		if ($this->hasArgument('href') && !empty($this->arguments['href'])) {
+			$cObj = t3lib_div::makeInstance('tslib_cObj');
+			$configuration = array(
+				'parameter' => $this->arguments['href'],
+				'returnLast' => true
+			);
+			$href = $cObj->typolink('', $configuration);
+			$this->arguments['href'] = $href;
+
+			return true;
+		} else {
+			return false;
+		}
+	}
+
+	/**
+	 * Adds attributes to the tag builder if they're not empty.
+	 *
+	 * @return void
+	 */
+	protected function addTagAttributes()
+	{
+		foreach ($this->paramLabels as $label) {
+			if ($this->hasArgument($label)
+				&& !empty($this->arguments[$label]))
+			{
+				$this->tag->addAttribute($label, $this->arguments[$label]);
+			}
+		}
+	}
+
+	/**
+	 * ViewHelper Bootstrap.
+	 *
+	 * @return mixed|void
+	 */
+	public function render()
+	{
+		if ($this->processLinkParams($this->arguments['arguments']['link'])) {
+			$this->tag->setContent($this->renderChildren());
+			$this->addTagAttributes();
+			return $this->tag->render();
+		} else {
+			return $this->renderChildren();
+		}
+	}
+}
+?>
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