TYPO3 Link ViewHelper

Div.php

<?php

/***************************************************************
 *  Copyright notice
 *
 *  (c) 2012-2013 Andy Hausmann <ah@sota-studio.de>
 *  (c) 2012-2013 Xaver Maierhofer <xaver.maierhofer@xwissen.info>
 *
 *  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!
 ***************************************************************/

/**
 * Helper Class which makes various tools and helper available
 *
 * @author Andy Hausmann <ah@sota-studio.de>
 * @author Xaver Maierhofer <xaver.maierhofer@xwissen.info>
 * @package flexslider
 * @license http://www.gnu.org/licenses/gpl.html GNU General Public License, version 3 or later
 */
class Tx_BdmFce_Utility_Div
{

	/**
	 * Better implementation of php's array_combine().
	 * This wont throw false in case both array haven't an identical size.
	 *
	 * @static
	 * @param array $a Array containing the keys.
	 * @param array $b Array containing the values.
	 * @param bool $pad Switch for allowing padding. Fills the combined array with empty values if any array is larger than the other one.
	 * @return array Combined array.
	 */
	public static function combineArray($a, $b, $pad = true) {
		$acount = count($a);
		$bcount = count($b);
		// more elements in $a than $b but we don't want to pad either
		if (!$pad) {
			$size = ($acount > $bcount) ? $bcount : $acount;
			$a = array_slice($a, 0, $size);
			$b = array_slice($b, 0, $size);
		} else {
			// more headers than row fields
			if ($acount > $bcount) {
				$more = $acount - $bcount;
				// how many fields are we missing at the end of the second array?
				// Add empty strings to ensure arrays $a and $b have same number of elements
				$more = $acount - $bcount;
				for($i = 0; $i < $more; $i++) {
					$b[] = "";
				}
				// more fields than headers
			} else if ($acount < $bcount) {
				$more = $bcount - $acount;
				// fewer elements in the first array, add extra keys
				for($i = 0; $i < $more; $i++) {
					$key = 'extra_field_0' . $i;
					$a[] = $key;
				}

			}
		}

		return array_combine($a, $b);
	}

	/**
	 * Returns the reference to a 'resource' in TypoScript.
	 *
	 * @param string $file File get a reference from - can contain EXT:ext_name
	 * @return mixed
	 */
	public static function getFileResource($file)
	{
		return $GLOBALS['TSFE']->tmpl->getFileName($file);
	}

	/**
	 * Checks a passed CSS or JS file and adds it to the Frontend.
	 *
	 * @param string $file File reference
	 * @param bool $moveToFooter Flag to include file into footer - doesn't work for CSS files
	 */
	public static function addCssJsFile($file, $moveToFooter = FALSE)
	{
		// Get file extension (after last occurance of a dot)
		$mediaTypeSplit = strrchr($file, '.');
		// Get file reference
		$resolved = self::getFileResource($file);

		if ($resolved) {
			// JavaScript processing
			if ($mediaTypeSplit == '.js') {
				($moveToFooter)
						? $GLOBALS['TSFE']->getPageRenderer()->addJsFooterFile($resolved)
						: $GLOBALS['TSFE']->getPageRenderer()->addJsFile($resolved);

				// Stylesheet processing
			} elseif ($mediaTypeSplit == '.css') {
				$GLOBALS['TSFE']->getPageRenderer()->addCssFile($resolved);
			}
		}
	}

	/**
	 * Checks a passed CSS or JS file and adds it to the Frontend.
	 *
	 * @param string $script JS Block
	 * @param string $addUnique Unique key to avoid multiple inclusions
	 * @param bool $moveToFooter Flag to include file into footer - doesn't work for CSS files
	 */
	public static function addJsInline($code, $name, $moveToFooter = false)
	{

		if ($code) {
			//$code = '<script type="text/javascript">'.$code.'</script>';
			($moveToFooter)
					? $GLOBALS['TSFE']->getPageRenderer()->addJsFooterInlineCode($name, $code)
					: $GLOBALS['TSFE']->getPageRenderer()->addJsInlineCode($name, $code);
		}
	}

	/**
	 * Adds/renders a Flash message.
	 *
	 * @param string $title The title
	 * @param string $message The message
	 * @param int $type Message level
	 * @return mixed
	 */
	public static function renderFlashMessage($title, $message, $type = t3lib_FlashMessage::WARNING) {
		$code  = ".typo3-message .message-header{padding: 10px 10px 0 30px;font-size:0.9em;}";
		$code .= ".typo3-message .message-body{padding: 10px;font-size:0.9em;}";

		$GLOBALS['TSFE']->getPageRenderer()->addCssFile(t3lib_extMgm::siteRelPath('t3skin') . 'stylesheets/visual/element_message.css');
		$GLOBALS['TSFE']->getPageRenderer()->addCssInlineBlock('flashmessage',$code);

		$flashMessage = t3lib_div::makeInstance('t3lib_FlashMessage', $message, $title, $type);
		return $flashMessage->render();
	}

}

LinkViewHelper.php

<?php

/***************************************************************
 *  Copyright notice
 *
 *  (c) 2012-2013 Andy Hausmann <ah@sota-studio.de>
 *  (c) 2012-2013 Simon Rauterberg <rauterberg@goldland-media.com>
 *
 *  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 <ah@sota-studio.de>
 * @author Simon Rauterberg <rauterberg@goldland-media.com>
 * @package flexslider
 * @license http://www.gnu.org/licenses/gpl.html GNU General Public License, version 3 or later
 */
class Tx_BdmFce_ViewHelpers_LinkViewHelper extends Tx_Fluid_Core_ViewHelper_AbstractTagBasedViewHelper
{

	/**
	 * @var string
	 */
	protected $tagName = 'a';

	/**
	 * @var array
	 */
	protected $paramLabels = array('href', 'target', 'class', 'title', 'param');


	/**
	 * 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.');

	}

	/**
	 * Workaround for parent::setArguments().
	 *
	 * Mentioned method is inconsistent:
	 * - in TYPO3 4.5 it expects an object instance of Tx_Fluid_Core_ViewHelper_Arguments
	 * - in TYPO3 > 4.5 it expects just an array.
	 *
	 * In order to avoid fatal errors, this new method has been temporarily implemented.
	 *
	 * @param array $arguments
	 * @return void
	 */
	public function setArgumentsFromArray(array $arguments) {

		$this->arguments = $arguments;
	}

	/**
	 * 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
		$paramDataArr = Tx_BdmFce_Utility_Div::combineArray($this->paramLabels, $paramDataArr, false);
		foreach($paramDataArr as $k=>$v){
			if(trim($v) == "-") $paramDataArr[$k]="";
		}
		if (isset($paramDataArr['href']) && !empty($paramDataArr['href'])) {
			// Save link data into ViewHelper arguments
			$this->setArgumentsFromArray($paramDataArr);

			$cObj = t3lib_div::makeInstance('tslib_cObj');

			$configuration = array(
				'parameter' => $this->arguments['href'],
				'returnLast' => true,
				'additionalParams' => '&' . $this->arguments['param']
			);
			$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 $label) {
			if (isset($this->arguments[$label])
					&& !empty($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();
		}
	}
}
?>