Hello-World-Component/site/views/greet/view.html.php

<?php
/*----------------------------------------------------------------------------------|  www.vdm.io  |----/
				VDM 
/-------------------------------------------------------------------------------------------------------/

	@version		1.0.0
	@build			25th April, 2018
	@created		20th September, 2017
	@package		Hello World
	@subpackage		view.html.php
	@author			Llewellyn <https://www.vdm.io>	
	@copyright		Copyright (C) 2015. All Rights Reserved
	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html
  ____  _____  _____  __  __  __      __       ___  _____  __  __  ____  _____  _  _  ____  _  _  ____ 
 (_  _)(  _  )(  _  )(  \/  )(  )    /__\     / __)(  _  )(  \/  )(  _ \(  _  )( \( )( ___)( \( )(_  _)
.-_)(   )(_)(  )(_)(  )    (  )(__  /(__)\   ( (__  )(_)(  )    (  )___/ )(_)(  )  (  )__)  )  (   )(  
\____) (_____)(_____)(_/\/\_)(____)(__)(__)   \___)(_____)(_/\/\_)(__)  (_____)(_)\_)(____)(_)\_) (__) 

/------------------------------------------------------------------------------------------------------*/

// No direct access to this file
defined('_JEXEC') or die('Restricted access');

// import Joomla view library
jimport('joomla.application.component.view');

/**
 * Hello_world View class for the Greet
 */
class Hello_worldViewGreet extends JViewLegacy
{
	// Overwriting JView display method
	function display($tpl = null)
	{		
		// get combined params of both component and menu
		$this->app = JFactory::getApplication();
		$this->params = $this->app->getParams();
		$this->menu = $this->app->getMenu()->getActive();
		// get the user object
		$this->user = JFactory::getUser();
		// Initialise variables.
		$this->item = $this->get('Item');

		// Set the toolbar
		$this->addToolBar();

		// set the document
		$this->_prepareDocument();

		// Check for errors.
		if (count($errors = $this->get('Errors')))
		{
			throw new Exception(implode("\n", $errors), 500);
		}

		parent::display($tpl);
	}

	/**
	 * Prepares the document
	 */
	protected function _prepareDocument()
	{

		// always make sure jquery is loaded.
		JHtml::_('jquery.framework');
		// Load the header checker class.
		require_once( JPATH_COMPONENT_SITE.'/helpers/headercheck.php' );
		// Initialize the header checker.
		$HeaderCheck = new hello_worldHeaderCheck; 

		// Load uikit options.
		$uikit = $this->params->get('uikit_load');
		// Set script size.
		$size = $this->params->get('uikit_min');
		// Set css style.
		$style = $this->params->get('uikit_style');

		// The uikit css.
		if ((!$HeaderCheck->css_loaded('uikit.min') || $uikit == 1) && $uikit != 2 && $uikit != 3)
		{
			$this->document->addStyleSheet(JURI::root(true) .'/media/com_hello_world/uikit-v2/css/uikit'.$style.$size.'.css', (Hello_worldHelper::jVersion()->isCompatible('3.8.0')) ? array('version' => 'auto') : 'text/css');
		}
		// The uikit js.
		if ((!$HeaderCheck->js_loaded('uikit.min') || $uikit == 1) && $uikit != 2 && $uikit != 3)
		{
			$this->document->addScript(JURI::root(true) .'/media/com_hello_world/uikit-v2/js/uikit'.$size.'.js', (Hello_worldHelper::jVersion()->isCompatible('3.8.0')) ? array('version' => 'auto') : 'text/javascript');
		}   
		// load the meta description
		if (isset($this->item->metadesc) && $this->item->metadesc)
		{
			$this->document->setDescription($this->item->metadesc);
		}
		elseif ($this->params->get('menu-meta_description'))
		{
			$this->document->setDescription($this->params->get('menu-meta_description'));
		}
		// load the key words if set
		if (isset($this->item->metakey) && $this->item->metakey)
		{
			$this->document->setMetadata('keywords', $this->item->metakey);
		}
		elseif ($this->params->get('menu-meta_keywords'))
		{
			$this->document->setMetadata('keywords', $this->params->get('menu-meta_keywords'));
		}
		// check the robot params
		if (isset($this->item->robots) && $this->item->robots)
		{
			$this->document->setMetadata('robots', $this->item->robots);
		}
		elseif ($this->params->get('robots'))
		{
			$this->document->setMetadata('robots', $this->params->get('robots'));
		}
		// check if autor is to be set
		if (isset($this->item->created_by) && $this->params->get('MetaAuthor') == '1')
		{
			$this->document->setMetaData('author', $this->item->created_by);
		}
		// check if metadata is available
		if (isset($this->item->metadata) && $this->item->metadata)
		{
			$mdata = json_decode($this->item->metadata,true);
			foreach ($mdata as $k => $v)
			{
				if ($v)
				{
					$this->document->setMetadata($k, $v);
				}
			}
		}  
		// add the document default css file
		$this->document->addStyleSheet(JURI::root(true) .'/components/com_hello_world/assets/css/greet.css', (Hello_worldHelper::jVersion()->isCompatible('3.8.0')) ? array('version' => 'auto') : 'text/css'); 
	}

	/**
	 * Setting the toolbar
	 */
	protected function addToolBar()
	{
		// adding the joomla toolbar to the front
		JLoader::register('JToolbarHelper', JPATH_ADMINISTRATOR.'/includes/toolbar.php');

		// set help url for this view if found
		$help_url = Hello_worldHelper::getHelpUrl('greet');
		if (Hello_worldHelper::checkString($help_url))
		{
			JToolbarHelper::help('COM_HELLO_WORLD_HELP_MANAGER', false, $help_url);
		}
		// now initiate the toolbar
		$this->toolbar = JToolbar::getInstance();
	}

	/**
	 * Escapes a value for output in a view script.
	 *
	 * @param   mixed  $var  The output to escape.
	 *
	 * @return  mixed  The escaped value.
	 */
	public function escape($var, $sorten = false, $length = 40)
	{
		// use the helper htmlEscape method instead.
		return Hello_worldHelper::htmlEscape($var, $this->_charset, $sorten, $length);
	}
}