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/**
 * HTML helper class
 *
 * This class was developed to provide some standard HTML functions.
 *
 * @package	VirtueMart
 * @subpackage Helpers
 * @author RickG
 * @copyright Copyright (c) 2004-2008 Soeren Eberhardt-Biermann, 2009 VirtueMart Team. All rights reserved.
 */

// Check to ensure this file is included in Joomla!
defined('_JEXEC') or die();

/**
 * HTML Helper
 *
 * @package VirtueMart
 * @subpackage Helpers
 * @author RickG
 */
class VmHTML{

	/**
	 * Default values for options. Organized by option group.
	 *
	 * @var     array
	 * @since   11.1
	 */
	static protected $_optionDefaults = array(
		'option' => array('option.attr' => null, 'option.disable' => 'disable', 'option.id' => null, 'option.key' => 'value',
			'option.key.toHtml' => true, 'option.label' => null, 'option.label.toHtml' => true, 'option.text' => 'text',
			'option.text.toHtml' => true));

	/**
	 * Converts all special chars to html entities
	 *
	 * @param string $string
	 * @param string $quote_style
	 * @param boolean $only_special_chars Only Convert Some Special Chars ? ( <, >, &, ... )
	 * @return string
	 */
	static function shopMakeHtmlSafe( $string, $quote_style='ENT_QUOTES', $use_entities=false ) {

		if( defined( $quote_style )) {
			$quote_style = constant($quote_style);
		}
		if( $use_entities ) {
			$string = @htmlentities( $string, constant($quote_style), self::vmGetCharset() );
		} else {
			$string = @htmlspecialchars( $string, $quote_style, self::vmGetCharset() );
		}
		return $string;
	}


	/**
	 * Returns the charset string from the global _ISO constant
	 *
	 * @return string UTF-8 by default
	 * @since 1.0.5
	 */
static function vmGetCharset() {
		$iso = explode( '=', @constant('_ISO') );
		if( !empty( $iso[1] )) {
			return $iso[1];
		}
		else {
			return 'UTF-8';
		}
	}

    /**
     * Generate HTML code for a row using VmHTML function
     * works also with shopfunctions, for example
	 * $html .= VmHTML::row (array('ShopFunctions', 'renderShopperGroupList'),
	 * 			'VMCUSTOM_BUYER_GROUP_SHOPPER', $field->shopper_groups, TRUE, 'custom_param['.$row.'][shopper_groups][]', ' ');
	 *
     * @func string  : function to call
     * @label string : Text Label
     * @args array : arguments
     * @return string: HTML code for row table
     */
    static function row($func,$label){
		$VmHTML="VmHTML";
		if (!is_array($func)) {
			$func = array($VmHTML, $func);
		}
		$passedArgs = func_get_args();
		array_shift( $passedArgs );//remove function
		array_shift( $passedArgs );//remove label
			$args = array();
			foreach ($passedArgs as $k => $v) {
			    $args[] = &$passedArgs[$k];
			}
		$lang =JFactory::getLanguage();
		if($lang->hasKey($label.'_TIP')){
			$labelHint = vmText::_($label.'_TIP');
			$label = '<span class="hasTip" title="'.vmText::_($label.'_TIP').'">'.vmText::_($label).'</span>' ;
		} //Fallback
		else if($lang->hasKey($label.'_EXPLAIN')){
			$labelHint = vmText::_($label.'_EXPLAIN');
			$label = '<span class="hasTip" title="'.vmText::_($label.'_EXPLAIN').'">'.vmText::_($label).'</span>' ;
		} else {
			$label = vmText::_($label);
		}

		$html = '
		<tr>
			<td class="key">
				'.$label.'
			</td>
			<td>
				'.call_user_func_array($func, $args).'
			</td>
		</tr>';
		return $html ;
	}
	/* simple value display */
	static function value( $value ){
		$lang =JFactory::getLanguage();
		return $lang->hasKey($value) ? vmText::_($value) : $value;
	}

	/**
	 * The sense is unclear !
	 * @deprecated
	 * @param $value
	 * @return mixed
	 */
	static function raw( $value ){
		return $value;
	}
    /**
     * Generate HTML code for a checkbox
     *
     * @param string Name for the checkbox
     * @param mixed Current value of the checkbox
     * @param mixed Value to assign when checkbox is checked
     * @param mixed Value to assign when checkbox is not checked
     * @return string HTML code for checkbox
     */
    static function checkbox($name, $value, $checkedValue=1, $uncheckedValue=0, $extraAttribs = '', $id = null) {
		if (!$id) $id=$name ;
	if ($value == $checkedValue) {
	    $checked = 'checked="checked"';
	}
	else {
	    $checked = '';
	}
	$htmlcode = '<input type="hidden" name="' . $name . '" value="' . $uncheckedValue . '" />';
	$htmlcode .= '<input '.$extraAttribs.' id="' . $id . '" type="checkbox" name="' . $name . '" value="' . $checkedValue . '" ' . $checked . ' />';
	return $htmlcode;
    }

	/**
	 *
	 * @author Patrick Kohl
	 * @param array $options( value & text)
	 * @param string $name option name
	 * @param string $defaut defaut value
	 * @param string $key option value
	 * @param string $text option text
	 * @param boolean $zero add  a '0' value in the option
	 * return a select list
	 */
	public static function select($name, $options, $default = '0',$attrib = "onchange='submit();'",$key ='value' ,$text ='text', $zero=true, $chosenDropDowns=true,$tranlsate=true){
		if ($zero==true) {
			$option  = array($key =>"0", $text => vmText::_('COM_VIRTUEMART_LIST_EMPTY_OPTION'));
			$options = array_merge(array($option), $options);
		}
		if ($chosenDropDowns) {
			vmJsApi::chosenDropDowns();
			$attrib .= ' class="vm-chzn-select"';
		}
		return VmHTML::genericlist($options,$name,$attrib,$key,$text,$default,false,$tranlsate);
	}

	/**
	 * Generates an HTML selection list.
	 * @author Joomla 2.5.14
	 * @param   array    $data       An array of objects, arrays, or scalars.
	 * @param   string   $name       The value of the HTML name attribute.
	 * @param   mixed    $attribs    Additional HTML attributes for the <select> tag. This
	 *                               can be an array of attributes, or an array of options. Treated as options
	 *                               if it is the last argument passed. Valid options are:
	 *                               Format options, see {@see JHtml::$formatOptions}.
	 *                               Selection options, see {@see JHtmlSelect::options()}.
	 *                               list.attr, string|array: Additional attributes for the select
	 *                               element.
	 *                               id, string: Value to use as the select element id attribute.
	 *                               Defaults to the same as the name.
	 *                               list.select, string|array: Identifies one or more option elements
	 *                               to be selected, based on the option key values.
	 * @param   string   $optKey     The name of the object variable for the option value. If
	 *                               set to null, the index of the value array is used.
	 * @param   string   $optText    The name of the object variable for the option text.
	 * @param   mixed    $selected   The key that is selected (accepts an array or a string).
	 * @param   mixed    $idtag      Value of the field id or null by default
	 * @param   boolean  $translate  True to translate
	 *
	 * @return  string  HTML for the select list.
	 *
	 * @since   11.1
	 */
	public static function genericlist($data, $name, $attribs = null, $optKey = 'value', $optText = 'text', $selected = null, $idtag = false,
									   $translate = false)
	{
		// Set default options
		$options = array_merge(JHtml::$formatOptions, array('format.depth' => 0, 'id' => false));
		if (is_array($attribs) && func_num_args() == 3)
		{
			// Assume we have an options array
			$options = array_merge($options, $attribs);
		}
		else
		{
			// Get options from the parameters
			$options['id'] = $idtag;
			$options['list.attr'] = $attribs;
			$options['list.translate'] = $translate;
			$options['option.key'] = $optKey;
			$options['option.text'] = $optText;
			$options['list.select'] = $selected;
		}
		$attribs = '';
		if (isset($options['list.attr']))
		{
			if (is_array($options['list.attr']))
			{
				$attribs = JArrayHelper::toString($options['list.attr']);
			}
			else
			{
				$attribs = $options['list.attr'];
			}
			if ($attribs != '')
			{
				$attribs = ' ' . $attribs;
			}
		}

		$id = $options['id'] !== false ? $options['id'] : $name;
		$id = str_replace(array('[', ']'), '', $id);

		$baseIndent = str_repeat($options['format.indent'], $options['format.depth']++);
		$html = $baseIndent . '<select' . ($id !== '' ? ' id="' . $id . '"' : '') . ' name="' . $name . '"' . $attribs . '>' . $options['format.eol']
			. self::options($data, $options) . $baseIndent . '</select>' . $options['format.eol'];
		return $html;
	}

	/**
	 * Generates the option tags for an HTML select list (with no select tag
	 * surrounding the options).
	 * @author Joomla 2.5.14
	 * @param   array    $arr        An array of objects, arrays, or values.
	 * @param   mixed    $optKey     If a string, this is the name of the object variable for
	 *                               the option value. If null, the index of the array of objects is used. If
	 *                               an array, this is a set of options, as key/value pairs. Valid options are:
	 *                               -Format options, {@see JHtml::$formatOptions}.
	 *                               -groups: Boolean. If set, looks for keys with the value
	 *                                "&lt;optgroup>" and synthesizes groups from them. Deprecated. Defaults
	 *                                true for backwards compatibility.
	 *                               -list.select: either the value of one selected option or an array
	 *                                of selected options. Default: none.
	 *                               -list.translate: Boolean. If set, text and labels are translated via
	 *                                JText::_(). Default is false.
	 *                               -option.id: The property in each option array to use as the
	 *                                selection id attribute. Defaults to none.
	 *                               -option.key: The property in each option array to use as the
	 *                                selection value. Defaults to "value". If set to null, the index of the
	 *                                option array is used.
	 *                               -option.label: The property in each option array to use as the
	 *                                selection label attribute. Defaults to null (none).
	 *                               -option.text: The property in each option array to use as the
	 *                               displayed text. Defaults to "text". If set to null, the option array is
	 *                               assumed to be a list of displayable scalars.
	 *                               -option.attr: The property in each option array to use for
	 *                                additional selection attributes. Defaults to none.
	 *                               -option.disable: The property that will hold the disabled state.
	 *                                Defaults to "disable".
	 *                               -option.key: The property that will hold the selection value.
	 *                                Defaults to "value".
	 *                               -option.text: The property that will hold the the displayed text.
	 *                               Defaults to "text". If set to null, the option array is assumed to be a
	 *                               list of displayable scalars.
	 * @param   string   $optText    The name of the object variable for the option text.
	 * @param   mixed    $selected   The key that is selected (accepts an array or a string)
	 * @param   boolean  $translate  Translate the option values.
	 *
	 * @return  string  HTML for the select list
	 *
	 * @since   11.1
	 */
	public static function options($arr, $optKey = 'value', $optText = 'text', $selected = null, $translate = false)
	{
		$options = array_merge(
			JHtml::$formatOptions,
			self::$_optionDefaults['option'],
			array('format.depth' => 0, 'groups' => true, 'list.select' => null, 'list.translate' => false)
		);

		if (is_array($optKey))
		{
			// Set default options and overwrite with anything passed in
			$options = array_merge($options, $optKey);
		}
		else
		{
			// Get options from the parameters
			$options['option.key'] = $optKey;
			$options['option.text'] = $optText;
			$options['list.select'] = $selected;
			$options['list.translate'] = $translate;
		}

		$html = '';
		$baseIndent = str_repeat($options['format.indent'], $options['format.depth']);

		foreach ($arr as $elementKey => &$element)
		{
			$attr = '';
			$extra = '';
			$label = '';
			$id = '';
			if (is_array($element))
			{
				$key = $options['option.key'] === null ? $elementKey : $element[$options['option.key']];
				$text = $element[$options['option.text']];
				if (isset($element[$options['option.attr']]))
				{
					$attr = $element[$options['option.attr']];
				}
				if (isset($element[$options['option.id']]))
				{
					$id = $element[$options['option.id']];
				}
				if (isset($element[$options['option.label']]))
				{
					$label = $element[$options['option.label']];
				}
				if (isset($element[$options['option.disable']]) && $element[$options['option.disable']])
				{
					$extra .= ' disabled="disabled"';
				}
			}
			elseif (is_object($element))
			{
				$key = $options['option.key'] === null ? $elementKey : $element->$options['option.key'];
				$text = $element->$options['option.text'];
				if (isset($element->$options['option.attr']))
				{
					$attr = $element->$options['option.attr'];
				}
				if (isset($element->$options['option.id']))
				{
					$id = $element->$options['option.id'];
				}
				if (isset($element->$options['option.label']))
				{
					$label = $element->$options['option.label'];
				}
				if (isset($element->$options['option.disable']) && $element->$options['option.disable'])
				{
					$extra .= ' disabled="disabled"';
				}
			}
			else
			{
				// This is a simple associative array
				$key = $elementKey;
				$text = $element;
			}

			// The use of options that contain optgroup HTML elements was
			// somewhat hacked for J1.5. J1.6 introduces the grouplist() method
			// to handle this better. The old solution is retained through the
			// "groups" option, which defaults true in J1.6, but should be
			// deprecated at some point in the future.

			$key = (string) $key;

			// if no string after hyphen - take hyphen out
			$splitText = explode(' - ', $text, 2);
			$text = $splitText[0];
			if (isset($splitText[1]))
			{
				$text .= ' - ' . $splitText[1];
			}

			if ($options['list.translate'] && !empty($label))
			{
				$label = vmText::_($label);
			}
			if ($options['option.label.toHtml'])
			{
				$label = htmlentities($label);
			}
			if (is_array($attr))
			{
				$attr = JArrayHelper::toString($attr);
			}
			else
			{
				$attr = trim($attr);
			}
			$extra = ($id ? ' id="' . $id . '"' : '') . ($label ? ' label="' . $label . '"' : '') . ($attr ? ' ' . $attr : '') . $extra;
			if (is_array($options['list.select']))
			{
				foreach ($options['list.select'] as $val)
				{
					$key2 = is_object($val) ? $val->$options['option.key'] : $val;
					if ($key == $key2)
					{
						$extra .= ' selected="selected"';
						break;
					}
				}
			}
			elseif ((string) $key == (string) $options['list.select'])
			{
				$extra .= ' selected="selected"';
			}

			if ($options['list.translate'])
			{
				$text = vmText::_($text);
			}

			// Generate the option, encoding as required
			$html .= $baseIndent . '<option value="' . ($options['option.key.toHtml'] ? htmlspecialchars($key, ENT_COMPAT, 'UTF-8') : $key) . '"'
				. $extra . '>';
			$html .= $options['option.text.toHtml'] ? htmlentities(html_entity_decode($text, ENT_COMPAT, 'UTF-8'), ENT_COMPAT, 'UTF-8') : $text;
			$html .= '</option>' . $options['format.eol'];

		}

		return $html;
	}

	/**
	 * Prints an HTML dropdown box named $name using $arr to
	 * load the drop down.  If $value is in $arr, then $value
	 * will be the selected option in the dropdown.
	 * @author gday
	 * @author soeren
	 *
	 * @param string $name The name of the select element
	 * @param string $value The pre-selected value
	 * @param array $arr The array containing $key and $val
	 * @param int $size The size of the select element
	 * @param string $multiple use "multiple=\"multiple\" to have a multiple choice select list
	 * @param string $extra More attributes when needed
	 * @return string HTML drop-down list
	 */
	static function selectList($name, $value, $arrIn, $size=1, $multiple="", $extra="", $data_placeholder='') {

		$html = '';
		if( empty( $arrIn ) ) {
			$arr = array();
		} else {
			if(!is_array($arrIn)){
	        	 $arr=array($arrIn);
	        } else {
	        	 $arr=$arrIn;
	        }
		}
		if (!empty($data_placeholder)) {
			$data_placeholder='data-placeholder="'.vmText::_($data_placeholder).'"';
		}

		$html = '<select class="inputbox" id="'.$name.'" name="'.$name.'" size="'.$size.'" '.$multiple.' '.$extra.' '.$data_placeholder.' >';

		while (list($key, $val) = each($arr)) {
//		foreach ($arr as $key=>$val){
			$selected = "";
			if( is_array( $value )) {
				if( in_array( $key, $value )) {
					$selected = 'selected="selected"';
				}
			}
			else {
				if(strtolower($value) == strtolower($key) ) {
					$selected = 'selected="selected"';
				}
			}

			$html .= '<option value="'.$key.'" '.$selected.'>'.self::shopMakeHtmlSafe($val);
			$html .= '</option>';

		}

		$html .= '</select>';

		return $html;
	}

	/**
	 * Creates a Radio Input List
	 *
	 * @param string $name
	 * @param string $value default value
	 * @param string $arr
	 * @param string $extra
	 * @return string
	 */
	static function radioList($name, $value, &$arr, $extra="", $separator='<br />') {
		$html = '';
		if( empty( $arr ) ) {
			$arr = array();
		}
		$html = '';
		$i = 0;
		foreach($arr as $key => $val) {
			$checked = '';
			if( is_array( $value )) {
				if( in_array( $key, $value )) {
					$checked = 'checked="checked"';
				}
			}
			else {
				if(strtolower($value) == strtolower($key) ) {
					$checked = 'checked="checked"';
				}
			}
			$html .= '<input type="radio" name="'.$name.'" id="'.$name.$i.'" value="'.htmlspecialchars($key, ENT_QUOTES).'" '.$checked.' '.$extra." />\n";
			$html .= '<label for="'.$name.$i++.'">'.$val."</label>".$separator."\n";
		}

		return $html;
	}

	/**
	 * Creates radio List
	 * @param array $radios
	 * @param string $name
	 * @param string $default
	 * @return string
	 */
	static function radio( $name, $radios, $default,$key='value',$text='text') {
		return '<fieldset class="radio">'.JHTML::_('select.radiolist', $radios, $name, '', $key, $text, $default).'</fieldset>';
	}
	/**
	 * Creating rows with boolean list
	 *
	 * @author Patrick Kohl
	 * @param string $label
	 * @param string $name
	 * @param string $value
	 *
	 */
	public static function booleanlist (  $name, $value,$class='class="inputbox"'){
		return '<fieldset class="radio">'.JHTML::_( 'select.booleanlist',  $name , $class , $value).'</fieldset>' ;
	}
		/**
	 * Creating rows with input fields
	 *
	 * @author Patrick Kohl
	 * @param string $text
	 * @param string $name
	 * @param string $value
	 */
	public static function input($name,$value,$class='class="inputbox"',$readonly='',$size='37',$maxlength='255',$more=''){
		return '<input type="text" '.$readonly.' '.$class.' id="'.$name.'" name="'.$name.'" size="'.$size.'" maxlength="'.$maxlength.'" value="'.htmlspecialchars($value).'" />'.$more;
	}

	/**
	 * Creating rows with input fields
	 *
	 * @author Patrick Kohl
	 * @param string $text
	 * @param string $name
	 * @param string $value
	 */
	public static function textarea($name,$value,$class='class="inputbox"',$cols='100',$rows="4"){
		return '<textarea '.$class.' id="'.$name.'" name="'.$name.'" cols="'.$cols.'" rows="'.$rows.'"/>'.$value.'</textarea >';
	}
	/**
	 * render editor code
	 *
	 * @author Patrick Kohl
	 * @param string $text
	 * @param string $name
	 * @param string $value
	 */
	public static function editor($name,$value,$size='100%',$height='300',$hide = array('pagebreak', 'readmore')){
		$editor =JFactory::getEditor();
		return $editor->display($name, $value, $size, $height, null, null ,$hide )  ;
	}


	/**
	 * renders the hidden input
	 * @author Max Milbers
	 */
	public static function inputHidden($values){
		$html='';
		foreach($values as $k=>$v){
			$html .= '<input type="hidden" name="'.$k.'" value="'.$v.'" />';
		}
		return $html;
	}

	/**
	* @author Patrick Kohl
	* @var $type type of regular Expression to validate
	* $type can be I integer, F Float, A date, M, time, T text, L link, U url, P phone
	*@bool $required field is required
	*@Int $min minimum of char
	*@Int $max max of char
	*@var $match original ID field to compare with this such as Email, passsword
	*@ Return $html class for validate javascript
	**/
	public static function validate($type='',$required=true, $min=null,$max=null,$match=null) {

		if ($required) $validTxt = 'required';
		else $validTxt = 'optional';
		if (isset($min)) $validTxt .= ',minSize['.$min.']';
		if (isset($max)) $validTxt .= ',maxSize['.$max.']';
		static $validateID=0 ;
		$validateID++;
		if ($type=='S' ) return 'id="validate'.$validateID.'" class="validate[required,minSize[2],maxSize[255]]"';
		$validate = array ( 'I'=>'onlyNumberSp', 'F'=>'number','D'=>'dateTime','A'=>'date','M'=>'time','T'=>'Text','L'=>'link','U'=>'url','P'=>'phone');
		if (isset ($validate[$type])) $validTxt .= ',custom['.$validate[$type].']';
		$html ='id="validate'.$validateID.'" class="validate['.$validTxt.']"';

		return $html ;
	}

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/**
 * @package     Joomla.Platform
 * @subpackage  HTML
 *
 * @copyright   Copyright (C) 2005 - 2014 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE
 */

defined('JPATH_PLATFORM') or die;

JHtml::addIncludePath(JPATH_PLATFORM . '/joomla/html/html');

jimport('joomla.environment.uri');
jimport('joomla.environment.browser');
jimport('joomla.filesystem.file');

/**
 * Utility class for all HTML drawing classes
 *
 * @package     Joomla.Platform
 * @subpackage  HTML
 * @since       11.1
 */
abstract class JHtml
{
	/**
	 * Option values related to the generation of HTML output. Recognized
	 * options are:
	 *     fmtDepth, integer. The current indent depth.
	 *     fmtEol, string. The end of line string, default is linefeed.
	 *     fmtIndent, string. The string to use for indentation, default is
	 *     tab.
	 *
	 * @var    array
	 * @since  11.1
	 */
	public static $formatOptions = array('format.depth' => 0, 'format.eol' => "\n", 'format.indent' => "\t");

	/**
	 * An array to hold included paths
	 *
	 * @var    array
	 * @since  11.1
	 */
	protected static $includePaths = array();

	/**
	 * An array to hold method references
	 *
	 * @var    array
	 * @since  11.1
	 */
	protected static $registry = array();

	/**
	 * Method to extract a key
	 *
	 * @param   string  $key  The name of helper method to load, (prefix).(class).function
	 *                        prefix and class are optional and can be used to load custom html helpers.
	 *
	 * @return  array  Contains lowercase key, prefix, file, function.
	 *
	 * @since   11.1
	 */
	protected static function extract($key)
	{
		$key = preg_replace('#[^A-Z0-9_\.]#i', '', $key);

		// Check to see whether we need to load a helper file
		$parts = explode('.', $key);

		$prefix = (count($parts) == 3 ? array_shift($parts) : 'JHtml');
		$file = (count($parts) == 2 ? array_shift($parts) : '');
		$func = array_shift($parts);

		return array(strtolower($prefix . '.' . $file . '.' . $func), $prefix, $file, $func);
	}

	/**
	 * Class loader method
	 *
	 * Additional arguments may be supplied and are passed to the sub-class.
	 * Additional include paths are also able to be specified for third-party use
	 *
	 * @param   string  $key  The name of helper method to load, (prefix).(class).function
	 *                        prefix and class are optional and can be used to load custom
	 *                        html helpers.
	 *
	 * @return  mixed  JHtml::call($function, $args) or False on error
	 *
	 * @since   11.1
	 */
	public static function _($key)
	{
		list($key, $prefix, $file, $func) = self::extract($key);
		if (array_key_exists($key, self::$registry))
		{
			$function = self::$registry[$key];
			$args = func_get_args();
			// Remove function name from arguments
			array_shift($args);
			return JHtml::call($function, $args);
		}

		$className = $prefix . ucfirst($file);

		if (!class_exists($className))
		{
			jimport('joomla.filesystem.path');
			if ($path = JPath::find(JHtml::$includePaths, strtolower($file) . '.php'))
			{
				require_once $path;

				if (!class_exists($className))
				{
					JError::raiseError(500, JText::sprintf('JLIB_HTML_ERROR_NOTFOUNDINFILE', $className, $func));
					return false;
				}
			}
			else
			{
				JError::raiseError(500, JText::sprintf('JLIB_HTML_ERROR_NOTSUPPORTED_NOFILE', $prefix, $file));
				return false;
			}
		}

		$toCall = array($className, $func);
		if (is_callable($toCall))
		{
			JHtml::register($key, $toCall);
			$args = func_get_args();
			// Remove function name from arguments
			array_shift($args);
			return JHtml::call($toCall, $args);
		}
		else
		{
			JError::raiseError(500, JText::sprintf('JLIB_HTML_ERROR_NOTSUPPORTED', $className, $func));
			return false;
		}
	}

	/**
	 * Registers a function to be called with a specific key
	 *
	 * @param   string  $key       The name of the key
	 * @param   string  $function  Function or method
	 *
	 * @return  boolean  True if the function is callable
	 *
	 * @since   11.1
	 */
	public static function register($key, $function)
	{
		list($key) = self::extract($key);
		if (is_callable($function))
		{
			self::$registry[$key] = $function;
			return true;
		}
		return false;
	}

	/**
	 * Removes a key for a method from registry.
	 *
	 * @param   string  $key  The name of the key
	 *
	 * @return  boolean  True if a set key is unset
	 *
	 * @since   11.1
	 */
	public static function unregister($key)
	{
		list($key) = self::extract($key);
		if (isset(self::$registry[$key]))
		{
			unset(self::$registry[$key]);
			return true;
		}

		return false;
	}

	/**
	 * Test if the key is registered.
	 *
	 * @param   string  $key  The name of the key
	 *
	 * @return  boolean  True if the key is registered.
	 *
	 * @since   11.1
	 */
	public static function isRegistered($key)
	{
		list($key) = self::extract($key);
		return isset(self::$registry[$key]);
	}

	/**
	 * Function caller method
	 *
	 * @param   string  $function  Function or method to call
	 * @param   array   $args      Arguments to be passed to function
	 *
	 * @return  mixed   Function result or false on error.
	 *
	 * @see     http://php.net/manual/en/function.call-user-func-array.php
	 * @since   11.1
	 */
	protected static function call($function, $args)
	{
		if (is_callable($function))
		{
			// PHP 5.3 workaround
			$temp = array();
			foreach ($args as &$arg)
			{
				$temp[] = &$arg;
			}
			return call_user_func_array($function, $temp);
		}
		else
		{
			JError::raiseError(500, JText::_('JLIB_HTML_ERROR_FUNCTION_NOT_SUPPORTED'));
			return false;
		}
	}

	/**
	 * Write a <a></a> element
	 *
	 * @param   string  $url      The relative URL to use for the href attribute
	 * @param   string  $text     The target attribute to use
	 * @param   array   $attribs  An associative array of attributes to add
	 *
	 * @return  string  <a></a> string
	 *
	 * @since   11.1
	 */
	public static function link($url, $text, $attribs = null)
	{
		if (is_array($attribs))
		{
			$attribs = JArrayHelper::toString($attribs);
		}

		return '<a href="' . $url . '" ' . $attribs . '>' . $text . '</a>';
	}

	/**
	 * Write a <iframe></iframe> element
	 *
	 * @param   string  $url       The relative URL to use for the src attribute
	 * @param   string  $name      The target attribute to use
	 * @param   array   $attribs   An associative array of attributes to add
	 * @param   string  $noFrames  The message to display if the iframe tag is not supported
	 *
	 * @return  string  <iframe></iframe> element or message if not supported
	 *
	 * @since   11.1
	 */
	public static function iframe($url, $name, $attribs = null, $noFrames = '')
	{
		if (is_array($attribs))
		{
			$attribs = JArrayHelper::toString($attribs);
		}

		return '<iframe src="' . $url . '" ' . $attribs . ' name="' . $name . '">' . $noFrames . '</iframe>';
	}

	/**
	 * Compute the files to be include
	 *
	 * @param   string   $file            path to file
	 * @param   boolean  $relative        path to file is relative to /media folder
	 * @param   boolean  $detect_browser  detect browser to include specific browser files
	 * @param   string   $folder          folder name to search into (images, css, js, ...)
	 *
	 * @return  array    files to be included
	 *
	 * @see     JBrowser
	 * @since   11.1
	 *
	 * @deprecated 12.1
	 */
	protected static function _includeRelativeFiles($file, $relative, $detect_browser, $folder)
	{
		JLog::add('JHtml::_includeRelativeFiles() is deprecated.  Use JHtml::includeRelativeFiles().', JLog::WARNING, 'deprecated');

		return self::includeRelativeFiles($folder, $file, $relative, $detect_browser, false);
	}

	/**
	 * Compute the files to be include
	 *
	 * @param   string   $folder          folder name to search into (images, css, js, ...)
	 * @param   string   $file            path to file
	 * @param   boolean  $relative        path to file is relative to /media folder
	 * @param   boolean  $detect_browser  detect browser to include specific browser files
	 * @param   boolean  $detect_debug    detect debug to include compressed files if debug is on
	 *
	 * @return  array    files to be included
	 *
	 * @see     JBrowser
	 * @since   11.1
	 */
	protected static function includeRelativeFiles($folder, $file, $relative, $detect_browser, $detect_debug)
	{
		// If http is present in filename
		if (strpos($file, 'http') === 0)
		{
			$includes = array($file);
		}
		else
		{
			// Extract extension and strip the file
			$strip		= JFile::stripExt($file);
			$ext		= JFile::getExt($file);

			// Detect browser and compute potential files
			if ($detect_browser)
			{
				$navigator = JBrowser::getInstance();
				$browser = $navigator->getBrowser();
				$major = $navigator->getMajor();
				$minor = $navigator->getMinor();

				// Try to include files named filename.ext, filename_browser.ext, filename_browser_major.ext, filename_browser_major_minor.ext
				// where major and minor are the browser version names
				$potential = array($strip, $strip . '_' . $browser,  $strip . '_' . $browser . '_' . $major,
					$strip . '_' . $browser . '_' . $major . '_' . $minor);
			}
			else
			{
				$potential = array($strip);
			}

			// If relative search in template directory or media directory
			if ($relative)
			{

				// Get the template
				$app = JFactory::getApplication();
				$template = $app->getTemplate();

				// Prepare array of files
				$includes = array();

				// For each potential files
				foreach ($potential as $strip)
				{
					$files = array();
					// Detect debug mode
					if ($detect_debug && JFactory::getConfig()->get('debug'))
					{
						$files[] = $strip . '-uncompressed.' . $ext;
					}
					$files[] = $strip . '.' . $ext;

					// Loop on 1 or 2 files and break on first found
					foreach ($files as $file)
					{
						// If the file is in the template folder
						if (file_exists(JPATH_THEMES . "/$template/$folder/$file"))
						{
							$includes[] = JURI::base(true) . "/templates/$template/$folder/$file";
							break;
						}
						else
						{
							// If the file contains any /: it can be in an media extension subfolder
							if (strpos($file, '/'))
							{
								// Divide the file extracting the extension as the first part before /
								list($extension, $file) = explode('/', $file, 2);

								// If the file yet contains any /: it can be a plugin
								if (strpos($file, '/'))
								{
									// Divide the file extracting the element as the first part before /
									list($element, $file) = explode('/', $file, 2);

									// Try to deal with plugins group in the media folder
									if (file_exists(JPATH_ROOT . "/media/$extension/$element/$folder/$file"))
									{
										$includes[] = JURI::root(true) . "/media/$extension/$element/$folder/$file";
										break;
									}
									// Try to deal with classical file in a a media subfolder called element
									elseif (file_exists(JPATH_ROOT . "/media/$extension/$folder/$element/$file"))
									{
										$includes[] = JURI::root(true) . "/media/$extension/$folder/$element/$file";
										break;
									}
									// Try to deal with system files in the template folder
									elseif (file_exists(JPATH_THEMES . "/$template/$folder/system/$element/$file"))
									{
										$includes[] = JURI::root(true) . "/templates/$template/$folder/system/$element/$file";
										break;
									}
									// Try to deal with system files in the media folder
									elseif (file_exists(JPATH_ROOT . "/media/system/$folder/$element/$file"))
									{
										$includes[] = JURI::root(true) . "/media/system/$folder/$element/$file";
										break;
									}
								}
								// Try to deals in the extension media folder
								elseif (file_exists(JPATH_ROOT . "/media/$extension/$folder/$file"))
								{
									$includes[] = JURI::root(true) . "/media/$extension/$folder/$file";
									break;
								}
								// Try to deal with system files in the template folder
								elseif (file_exists(JPATH_THEMES . "/$template/$folder/system/$file"))
								{
									$includes[] = JURI::root(true) . "/templates/$template/$folder/system/$file";
									break;
								}
								// Try to deal with system files in the media folder
								elseif (file_exists(JPATH_ROOT . "/media/system/$folder/$file"))
								{
									$includes[] = JURI::root(true) . "/media/system/$folder/$file";
									break;
								}
							}
							// Try to deal with system files in the media folder
							elseif (file_exists(JPATH_ROOT . "/media/system/$folder/$file"))
							{
								$includes[] = JURI::root(true) . "/media/system/$folder/$file";
								break;
							}
						}
					}
				}
			}
			// If not relative and http is not present in filename
			else
			{
				$includes = array();
				foreach ($potential as $strip)
				{
					// Detect debug mode
					if ($detect_debug && JFactory::getConfig()->get('debug') && file_exists(JPATH_ROOT . "/$strip-uncompressed.$ext"))
					{
						$includes[] = JURI::root(true) . "/$strip-uncompressed.$ext";
					}
					elseif (file_exists(JPATH_ROOT . "/$strip.$ext"))
					{
						$includes[] = JURI::root(true) . "/$strip.$ext";
					}
				}
			}
		}
		return $includes;
	}

	/**
	 * Write a <img></img> element
	 *
	 * @param   string   $file       The relative or absolute URL to use for the src attribute
	 * @param   string   $alt        The alt text.
	 * @param   string   $attribs    The target attribute to use
	 * @param   array    $relative   An associative array of attributes to add
	 * @param   boolean  $path_only  If set to true, it tries to find an override for the file in the template
	 *
	 * @return  string
	 *
	 * @since   11.1
	 */
	public static function image($file, $alt, $attribs = null, $relative = false, $path_only = false)
	{
		if (is_array($attribs))
		{
			$attribs = JArrayHelper::toString($attribs);
		}

		$includes = self::includeRelativeFiles('images', $file, $relative, false, false);

		// If only path is required
		if ($path_only)
		{
			if (count($includes))
			{
				return $includes[0];
			}
			else
			{
				return null;
			}
		}
		else
		{
			return '<img src="' . (count($includes) ? $includes[0] : '') . '" alt="' . $alt . '" ' . $attribs . ' />';
		}
	}

	/**
	 * Write a <link rel="stylesheet" style="text/css" /> element
	 *
	 * @param   string   $file            path to file
	 * @param   array    $attribs         attributes to be added to the stylesheet
	 * @param   boolean  $relative        path to file is relative to /media folder
	 * @param   boolean  $path_only       return the path to the file only
	 * @param   boolean  $detect_browser  detect browser to include specific browser css files
	 *                                    will try to include file, file_*browser*, file_*browser*_*major*, file_*browser*_*major*_*minor*
	 *                                    <table>
	 *                                       <tr><th>Navigator</th>                  <th>browser</th>	<th>major.minor</th></tr>
	 *
	 *                                       <tr><td>Safari 3.0.x</td>               <td>konqueror</td>	<td>522.x</td></tr>
	 *                                       <tr><td>Safari 3.1.x and 3.2.x</td>     <td>konqueror</td>	<td>525.x</td></tr>
	 *                                       <tr><td>Safari 4.0 to 4.0.2</td>        <td>konqueror</td>	<td>530.x</td></tr>
	 *                                       <tr><td>Safari 4.0.3 to 4.0.4</td>      <td>konqueror</td>	<td>531.x</td></tr>
	 *                                       <tr><td>iOS 4.0 Safari</td>             <td>konqueror</td>	<td>532.x</td></tr>
	 *                                       <tr><td>Safari 5.0</td>                 <td>konqueror</td>	<td>533.x</td></tr>
	 *
	 *                                       <tr><td>Google Chrome 1.0</td>          <td>konqueror</td>	<td>528.x</td></tr>
	 *                                       <tr><td>Google Chrome 2.0</td>          <td>konqueror</td>	<td>530.x</td></tr>
	 *                                       <tr><td>Google Chrome 3.0 and 4.x</td>  <td>konqueror</td>	<td>532.x</td></tr>
	 *                                       <tr><td>Google Chrome 5.0</td>          <td>konqueror</td>	<td>533.x</td></tr>
	 *
	 *                                       <tr><td>Internet Explorer 5.5</td>      <td>msie</td>		<td>5.5</td></tr>
	 *                                       <tr><td>Internet Explorer 6.x</td>      <td>msie</td>		<td>6.x</td></tr>
	 *                                       <tr><td>Internet Explorer 7.x</td>      <td>msie</td>		<td>7.x</td></tr>
	 *                                       <tr><td>Internet Explorer 8.x</td>      <td>msie</td>		<td>8.x</td></tr>
	 *
	 *                                       <tr><td>Firefox</td>                    <td>mozilla</td>	<td>5.0</td></tr>
	 *                                    </table>
	 *                                    a lot of others
	 * @param   boolean  $detect_debug    detect debug to search for compressed files if debug is on
	 *
	 * @return  mixed  nothing if $path_only is false, null, path or array of path if specific css browser files were detected
	 *
	 * @see     JBrowser
	 * @since   11.1
	 */
	public static function stylesheet($file, $attribs = array(), $relative = false, $path_only = false, $detect_browser = true, $detect_debug = true)
	{
		// Need to adjust for the change in API from 1.5 to 1.6.
		// Function stylesheet($filename, $path = 'media/system/css/', $attribs = array())
		if (is_string($attribs))
		{
			JLog::add('The used parameter set in JHtml::stylesheet() is deprecated.', JLog::WARNING, 'deprecated');
			// Assume this was the old $path variable.
			$file = $attribs . $file;
		}

		if (is_array($relative))
		{
			// Assume this was the old $attribs variable.
			$attribs = $relative;
			$relative = false;
		}

		$includes = self::includeRelativeFiles('css', $file, $relative, $detect_browser, $detect_debug);

		// If only path is required
		if ($path_only)
		{
			if (count($includes) == 0)
			{
				return null;
			}
			elseif (count($includes) == 1)
			{
				return $includes[0];
			}
			else
			{
				return $includes;
			}
		}
		// If inclusion is required
		else
		{
			$document = JFactory::getDocument();
			foreach ($includes as $include)
			{
				$document->addStylesheet($include, 'text/css', null, $attribs);
			}
		}
	}

	/**
	 * Write a <script></script> element
	 *
	 * @param   string   $file            path to file
	 * @param   boolean  $framework       load the JS framework
	 * @param   boolean  $relative        path to file is relative to /media folder
	 * @param   boolean  $path_only       return the path to the file only
	 * @param   boolean  $detect_browser  detect browser to include specific browser js files
	 * @param   boolean  $detect_debug    detect debug to search for compressed files if debug is on
	 *
	 * @return  mixed  nothing if $path_only is false, null, path or array of path if specific js browser files were detected
	 *
	 * @see     JHtml::stylesheet
	 * @since   11.1
	 */
	public static function script($file, $framework = false, $relative = false, $path_only = false, $detect_browser = true, $detect_debug = true)
	{
		// Need to adjust for the change in API from 1.5 to 1.6.
		// function script($filename, $path = 'media/system/js/', $mootools = true)
		if (is_string($framework))
		{
			JLog::add('The used parameter set in JHtml::script() is deprecated.', JLog::WARNING, 'deprecated');
			// Assume this was the old $path variable.
			$file = $framework . $file;
			$framework = $relative;
		}

		// Include MooTools framework
		if ($framework)
		{
			JHtml::_('behavior.framework');
		}

		$includes = self::includeRelativeFiles('js', $file, $relative, $detect_browser, $detect_debug);

		// If only path is required
		if ($path_only)
		{
			if (count($includes) == 0)
			{
				return null;
			}
			elseif (count($includes) == 1)
			{
				return $includes[0];
			}
			else
			{
				return $includes;
			}
		}
		// If inclusion is required
		else
		{
			$document = JFactory::getDocument();
			foreach ($includes as $include)
			{
				$document->addScript($include);
			}
		}
	}

	/**
	 * Add the /media/system/js/core Javascript file.
	 *
	 * @param   boolean  $debug  True if debugging is enabled.
	 *
	 * @return  void
	 *
	 * @since   11.1
	 * @deprecated  12.1  Use JHtml::_('behavior.framework'); instead.
	 */
	public static function core($debug = null)
	{
		JLog::add('JHtml::core() is deprecated. Use JHtml::_(\'behavior.framework\');.', JLog::WARNING, 'deprecated');
		JHtml::_('behavior.framework', false, $debug);
	}

	/**
	 * Set format related options.
	 *
	 * Updates the formatOptions array with all valid values in the passed
	 * array. See {@see JHtml::$formatOptions} for details.
	 *
	 * @param   array  $options  Option key/value pairs.
	 *
	 * @return  void
	 *
	 * @since   11.1
	 */
	public static function setFormatOptions($options)
	{
		foreach ($options as $key => $val)
		{
			if (isset(self::$formatOptions[$key]))
			{
				self::$formatOptions[$key] = $val;
			}
		}
	}

	/**
	 * Returns formated date according to a given format and time zone.
	 *
	 * @param   string   $input      String in a format accepted by date(), defaults to "now".
	 * @param   string   $format     Format optional format for strftime
	 * @param   mixed    $tz         Time zone to be used for the date.  Special cases: boolean true for user
	 *                               setting, boolean false for server setting.
	 * @param   boolean  $gregorian  True to use Gregorian calenar
	 *
	 * @return  string    A date translated by the given format and time zone.
	 *
	 * @see     strftime
	 * @since   11.1
	 */
	public static function date($input = 'now', $format = null, $tz = true, $gregorian = false)
	{
		// Get some system objects.
		$config = JFactory::getConfig();
		$user = JFactory::getUser();

		// UTC date converted to user time zone.
		if ($tz === true)
		{
			// Get a date object based on UTC.
			$date = JFactory::getDate($input, 'UTC');

			// Set the correct time zone based on the user configuration.
			$date->setTimeZone(new DateTimeZone($user->getParam('timezone', $config->get('offset'))));
		}
		// UTC date converted to server time zone.
		elseif ($tz === false)
		{
			// Get a date object based on UTC.
			$date = JFactory::getDate($input, 'UTC');

			// Set the correct time zone based on the server configuration.
			$date->setTimeZone(new DateTimeZone($config->get('offset')));
		}
		// No date conversion.
		elseif ($tz === null)
		{
			$date = JFactory::getDate($input);
		}
		// UTC date converted to given time zone.
		else
		{
			// Get a date object based on UTC.
			$date = JFactory::getDate($input, 'UTC');

			// Set the correct time zone based on the server configuration.
			$date->setTimeZone(new DateTimeZone($tz));
		}

		// If no format is given use the default locale based format.
		if (!$format)
		{
			$format = JText::_('DATE_FORMAT_LC1');
		}
		// format is an existing language key
		elseif (JFactory::getLanguage()->hasKey($format))
		{
			$format = JText::_($format);
		}

		if ($gregorian)
		{
			return $date->format($format, true);
		}
		else
		{
			return $date->calendar($format, true);
		}
	}

	/**
	 * Creates a tooltip with an image as button
	 *
	 * @param   string  $tooltip  The tip string
	 * @param   mixed   $title    The title of the tooltip or an associative array with keys contained in
	 *                            {'title','image','text','href','alt'} and values corresponding to parameters of the same name.
	 * @param   string  $image    The image for the tip, if no text is provided
	 * @param   string  $text     The text for the tip
	 * @param   string  $href     An URL that will be used to create the link
	 * @param   string  $alt      The alt attribute for img tag
	 * @param   string  $class    CSS class for the tool tip
	 *
	 * @return  string
	 *
	 * @since   11.1
	 */
	public static function tooltip($tooltip, $title = '', $image = 'tooltip.png', $text = '', $href = '', $alt = 'Tooltip', $class = 'hasTip')
	{
		if (is_array($title))
		{
			if (isset($title['image']))
			{
				$image = $title['image'];
			}
			if (isset($title['text']))
			{
				$text = $title['text'];
			}
			if (isset($title['href']))
			{
				$href = $title['href'];
			}
			if (isset($title['alt']))
			{
				$alt = $title['alt'];
			}
			if (isset($title['class']))
			{
				$class = $title['class'];
			}
			if (isset($title['title']))
			{
				$title = $title['title'];
			}
			else
			{
				$title = '';
			}
		}

		$tooltip = htmlspecialchars($tooltip, ENT_COMPAT, 'UTF-8');
		$title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8');
		$alt = htmlspecialchars($alt, ENT_COMPAT, 'UTF-8');

		if (!$text)
		{
			$text = self::image($image, $alt, null, true);
		}

		if ($href)
		{
			$tip = '<a href="' . $href . '">' . $text . '</a>';
		}
		else
		{
			$tip = $text;
		}

		if ($title)
		{
			$tooltip = $title . '::' . $tooltip;
		}

		return '<span class="' . $class . '" title="' . $tooltip . '">' . $tip . '</span>';
	}

	/**
	 * Displays a calendar control field
	 *
	 * @param   string  $value    The date value
	 * @param   string  $name     The name of the text field
	 * @param   string  $id       The id of the text field
	 * @param   string  $format   The date format
	 * @param   array   $attribs  Additional HTML attributes
	 *
	 * @return  string  HTML markup for a calendar field
	 *
	 * @since   11.1
	 */
	public static function calendar($value, $name, $id, $format = '%Y-%m-%d', $attribs = null)
	{
		static $done;

		if ($done === null)
		{
			$done = array();
		}

		$readonly = isset($attribs['readonly']) && $attribs['readonly'] == 'readonly';
		$disabled = isset($attribs['disabled']) && $attribs['disabled'] == 'disabled';
		if (is_array($attribs))
		{
			$attribs = JArrayHelper::toString($attribs);
		}

		if (!$readonly && !$disabled)
		{
			// Load the calendar behavior
			self::_('behavior.calendar');
			self::_('behavior.tooltip');

			// Only display the triggers once for each control.
			if (!in_array($id, $done))
			{
				$document = JFactory::getDocument();
				$document
					->addScriptDeclaration(
					'window.addEvent(\'domready\', function() {Calendar.setup({
				// Id of the input field
				inputField: "' . $id . '",
				// Format of the input field
				ifFormat: "' . $format . '",
				// Trigger for the calendar (button ID)
				button: "' . $id . '_img",
				// Alignment (defaults to "Bl")
				align: "Tl",
				singleClick: true,
				firstDay: ' . JFactory::getLanguage()->getFirstDay() . '
				});});'
				);
				$done[] = $id;
			}
			return '<input type="text" title="' . (0 !== (int) $value ? self::_('date', $value, null, null) : '') . '" name="' . $name . '" id="' . $id
				. '" value="' . htmlspecialchars($value, ENT_COMPAT, 'UTF-8') . '" ' . $attribs . ' />'
				. self::_('image', 'system/calendar.png', JText::_('JLIB_HTML_CALENDAR'), array('class' => 'calendar', 'id' => $id . '_img'), true);
		}
		else
		{
			return '<input type="text" title="' . (0 !== (int) $value ? self::_('date', $value, null, null) : '')
				. '" value="' . (0 !== (int) $value ? self::_('date', $value, 'Y-m-d H:i:s', null) : '') . '" ' . $attribs
				. ' /><input type="hidden" name="' . $name . '" id="' . $id . '" value="' . htmlspecialchars($value, ENT_COMPAT, 'UTF-8') . '" />';
		}
	}

	/**
	 * Add a directory where JHtml should search for helpers. You may
	 * either pass a string or an array of directories.
	 *
	 * @param   string  $path  A path to search.
	 *
	 * @return  array  An array with directory elements
	 *
	 * @since   11.1
	 */
	public static function addIncludePath($path = '')
	{
		// Force path to array
		settype($path, 'array');

		// Loop through the path directories
		foreach ($path as $dir)
		{
			if (!empty($dir) && !in_array($dir, JHtml::$includePaths))
			{
				jimport('joomla.filesystem.path');
				array_unshift(JHtml::$includePaths, JPath::clean($dir));
			}
		}

		return JHtml::$includePaths;
	}
}
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/**
 * @package     Joomla.Platform
 * @subpackage  Document
 *
 * @copyright   Copyright (C) 2005 - 2014 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE
 */

defined('JPATH_PLATFORM') or die;

jimport('joomla.application.module.helper');
jimport('joomla.utilities.utility');

/**
 * DocumentHTML class, provides an easy interface to parse and display a HTML document
 *
 * @package     Joomla.Platform
 * @subpackage  Document
 * @since       11.1
 */
class JDocumentHTML extends JDocument
{
	/**
	 * Array of Header <link> tags
	 *
	 * @var    array
	 * @since  11.1
	 */
	public $_links = array();

	/**
	 * Array of custom tags
	 *
	 * @var    array
	 * @since  11.1
	 */
	public $_custom = array();

	/**
	 * Name of the template
	 *
	 * @var    string
	 * @since  11.1
	 */
	public $template = null;

	/**
	 * Base url
	 *
	 * @var    string
	 * @since  11.1
	 */
	public $baseurl = null;

	/**
	 * Array of template parameters
	 *
	 * @var    array
	 * @since  11.1
	 */
	public $params = null;

	/**
	 * File name
	 *
	 * @var    array
	 * @since  11.1
	 */
	public $_file = null;

	/**
	 * String holding parsed template
	 *
	 * @var    string
	 * @since  11.1
	 */
	protected $_template = '';

	/**
	 * Array of parsed template JDoc tags
	 *
	 * @var    array
	 * @since  11.1
	 */
	protected $_template_tags = array();

	/**
	 * Integer with caching setting
	 *
	 * @var    integer
	 * @since  11.1
	 */
	protected $_caching = null;

	/**
	 * Class constructor
	 *
	 * @param   array  $options  Associative array of options
	 *
	 * @since   11.1
	 */
	public function __construct($options = array())
	{
		parent::__construct($options);

		// Set document type
		$this->_type = 'html';

		// Set default mime type and document metadata (meta data syncs with mime type by default)
		$this->setMimeEncoding('text/html');
	}

	/**
	 * Get the HTML document head data
	 *
	 * @return  array  The document head data in array form
	 *
	 * @since   11.1
	 */
	public function getHeadData()
	{
		$data = array();
		$data['title']       = $this->title;
		$data['description'] = $this->description;
		$data['link']        = $this->link;
		$data['metaTags']    = $this->_metaTags;
		$data['links']       = $this->_links;
		$data['styleSheets'] = $this->_styleSheets;
		$data['style']       = $this->_style;
		$data['scripts']     = $this->_scripts;
		$data['script']      = $this->_script;
		$data['custom']      = $this->_custom;
		return $data;
	}

	/**
	 * Set the HTML document head data
	 *
	 * @param   array  $data  The document head data in array form
	 *
	 * @return  JDocumentHTML instance of $this to allow chaining
	 *
	 * @since   11.1
	 */
	public function setHeadData($data)
	{
		if (empty($data) || !is_array($data))
		{
			return;
		}

		$this->title = (isset($data['title']) && !empty($data['title'])) ? $data['title'] : $this->title;
		$this->description = (isset($data['description']) && !empty($data['description'])) ? $data['description'] : $this->description;
		$this->link = (isset($data['link']) && !empty($data['link'])) ? $data['link'] : $this->link;
		$this->_metaTags = (isset($data['metaTags']) && !empty($data['metaTags'])) ? $data['metaTags'] : $this->_metaTags;
		$this->_links = (isset($data['links']) && !empty($data['links'])) ? $data['links'] : $this->_links;
		$this->_styleSheets = (isset($data['styleSheets']) && !empty($data['styleSheets'])) ? $data['styleSheets'] : $this->_styleSheets;
		$this->_style = (isset($data['style']) && !empty($data['style'])) ? $data['style'] : $this->_style;
		$this->_scripts = (isset($data['scripts']) && !empty($data['scripts'])) ? $data['scripts'] : $this->_scripts;
		$this->_script = (isset($data['script']) && !empty($data['script'])) ? $data['script'] : $this->_script;
		$this->_custom = (isset($data['custom']) && !empty($data['custom'])) ? $data['custom'] : $this->_custom;

		return $this;
	}

	/**
	 * Merge the HTML document head data
	 *
	 * @param   array  $data  The document head data in array form
	 *
	 * @return  JDocumentHTML instance of $this to allow chaining
	 *
	 * @since   11.1
	 */
	public function mergeHeadData($data)
	{

		if (empty($data) || !is_array($data))
		{
			return;
		}

		$this->title = (isset($data['title']) && !empty($data['title']) && !stristr($this->title, $data['title']))
			? $this->title . $data['title']
			: $this->title;
		$this->description = (isset($data['description']) && !empty($data['description']) && !stristr($this->description, $data['description']))
			? $this->description . $data['description']
			: $this->description;
		$this->link = (isset($data['link'])) ? $data['link'] : $this->link;

		if (isset($data['metaTags']))
		{
			foreach ($data['metaTags'] as $type1 => $data1)
			{
				$booldog = $type1 == 'http-equiv' ? true : false;
				foreach ($data1 as $name2 => $data2)
				{
					$this->setMetaData($name2, $data2, $booldog);
				}
			}
		}

		$this->_links = (isset($data['links']) && !empty($data['links']) && is_array($data['links']))
			? array_unique(array_merge($this->_links, $data['links']))
			: $this->_links;
		$this->_styleSheets = (isset($data['styleSheets']) && !empty($data['styleSheets']) && is_array($data['styleSheets']))
			? array_merge($this->_styleSheets, $data['styleSheets'])
			: $this->_styleSheets;

		if (isset($data['style']))
		{
			foreach ($data['style'] as $type => $stdata)
			{
				if (!isset($this->_style[strtolower($type)]) || !stristr($this->_style[strtolower($type)], $stdata))
				{
					$this->addStyleDeclaration($stdata, $type);
				}
			}
		}

		$this->_scripts = (isset($data['scripts']) && !empty($data['scripts']) && is_array($data['scripts']))
			? array_merge($this->_scripts, $data['scripts'])
			: $this->_scripts;

		if (isset($data['script']))
		{
			foreach ($data['script'] as $type => $sdata)
			{
				if (!isset($this->_script[strtolower($type)]) || !stristr($this->_script[strtolower($type)], $sdata))
				{
					$this->addScriptDeclaration($sdata, $type);
				}
			}
		}

		$this->_custom = (isset($data['custom']) && !empty($data['custom']) && is_array($data['custom']))
			? array_unique(array_merge($this->_custom, $data['custom']))
			: $this->_custom;

		return $this;
	}

	/**
	 * Adds <link> tags to the head of the document
	 *
	 * $relType defaults to 'rel' as it is the most common relation type used.
	 * ('rev' refers to reverse relation, 'rel' indicates normal, forward relation.)
	 * Typical tag: <link href="index.php" rel="Start">
	 *
	 * @param   string  $href      The link that is being related.
	 * @param   string  $relation  Relation of link.
	 * @param   string  $relType   Relation type attribute.  Either rel or rev (default: 'rel').
	 * @param   array   $attribs   Associative array of remaining attributes.
	 *
	 * @return  JDocumentHTML instance of $this to allow chaining
	 *
	 * @since   11.1
	 */
	public function addHeadLink($href, $relation, $relType = 'rel', $attribs = array())
	{
		$this->_links[$href]['relation'] = $relation;
		$this->_links[$href]['relType'] = $relType;
		$this->_links[$href]['attribs'] = $attribs;

		return $this;
	}

	/**
	 * Adds a shortcut icon (favicon)
	 *
	 * This adds a link to the icon shown in the favorites list or on
	 * the left of the url in the address bar. Some browsers display
	 * it on the tab, as well.
	 *
	 * @param   string  $href      The link that is being related.
	 * @param   string  $type      File type
	 * @param   string  $relation  Relation of link
	 *
	 * @return  JDocumentHTML instance of $this to allow chaining
	 *
	 * @since   11.1
	 */
	public function addFavicon($href, $type = 'image/vnd.microsoft.icon', $relation = 'shortcut icon')
	{
		$href = str_replace('\\', '/', $href);
		$this->addHeadLink($href, $relation, 'rel', array('type' => $type));

		return $this;
	}

	/**
	 * Adds a custom HTML string to the head block
	 *
	 * @param   string  $html  The HTML to add to the head
	 *
	 * @return  JDocumentHTML instance of $this to allow chaining
	 *
	 * @since   11.1
	 */
	public function addCustomTag($html)
	{
		$this->_custom[] = trim($html);

		return $this;
	}

	/**
	 * Get the contents of a document include
	 *
	 * @param   string  $type     The type of renderer
	 * @param   string  $name     The name of the element to render
	 * @param   array   $attribs  Associative array of remaining attributes.
	 *
	 * @return  The output of the renderer
	 *
	 * @since   11.1
	 */
	public function getBuffer($type = null, $name = null, $attribs = array())
	{
		// If no type is specified, return the whole buffer
		if ($type === null)
		{
			return parent::$_buffer;
		}

		$result = null;
		if (isset(parent::$_buffer[$type][$name]))
		{
			return parent::$_buffer[$type][$name];
		}

		// If the buffer has been explicitly turned off don't display or attempt to render
		if ($result === false)
		{
			return null;
		}

		$renderer = $this->loadRenderer($type);
		if ($this->_caching == true && $type == 'modules')
		{
			$cache = JFactory::getCache('com_modules', '');
			$hash = md5(serialize(array($name, $attribs, $result, $renderer)));
			$cbuffer = $cache->get('cbuffer_' . $type);

			if (isset($cbuffer[$hash]))
			{
				return JCache::getWorkarounds($cbuffer[$hash], array('mergehead' => 1));
			}
			else
			{

				$options = array();
				$options['nopathway'] = 1;
				$options['nomodules'] = 1;
				$options['modulemode'] = 1;

				$this->setBuffer($renderer->render($name, $attribs, $result), $type, $name);
				$data = parent::$_buffer[$type][$name];

				$tmpdata = JCache::setWorkarounds($data, $options);

				$cbuffer[$hash] = $tmpdata;

				$cache->store($cbuffer, 'cbuffer_' . $type);
			}

		}
		else
		{
			$this->setBuffer($renderer->render($name, $attribs, $result), $type, $name);
		}

		return parent::$_buffer[$type][$name];
	}

	/**
	 * Set the contents a document includes
	 *
	 * @param   string  $content  The content to be set in the buffer.
	 * @param   array   $options  Array of optional elements.
	 *
	 * @return  JDocumentHTML instance of $this to allow chaining
	 *
	 * @since   11.1
	 */
	public function setBuffer($content, $options = array())
	{
		// The following code is just for backward compatibility.
		if (func_num_args() > 1 && !is_array($options))
		{
			$args = func_get_args();
			$options = array();
			$options['type'] = $args[1];
			$options['name'] = (isset($args[2])) ? $args[2] : null;
		}

		parent::$_buffer[$options['type']][$options['name']] = $content;

		return $this;
	}

	/**
	 * Parses the template and populates the buffer
	 *
	 * @param   array  $params  Parameters for fetching the template
	 *
	 * @return  JDocumentHTML instance of $this to allow chaining
	 *
	 * @since   11.1
	 */
	public function parse($params = array())
	{
		return $this->_fetchTemplate($params)->_parseTemplate();
	}

	/**
	 * Outputs the template to the browser.
	 *
	 * @param   boolean  $caching  If true, cache the output
	 * @param   array    $params   Associative array of attributes
	 *
	 * @return  The rendered data
	 *
	 * @since   11.1
	 */
	public function render($caching = false, $params = array())
	{
		$this->_caching = $caching;

		if (!empty($this->_template))
		{
			$data = $this->_renderTemplate();
		}
		else
		{
			$this->parse($params);
			$data = $this->_renderTemplate();
		}

		parent::render();
		return $data;
	}

	/**
	 * Count the modules based on the given condition
	 *
	 * @param   string  $condition  The condition to use
	 *
	 * @return  integer  Number of modules found
	 *
	 * @since   11.1
	 */
	public function countModules($condition)
	{
		$operators = '(\+|\-|\*|\/|==|\!=|\<\>|\<|\>|\<=|\>=|and|or|xor)';
		$words = preg_split('# ' . $operators . ' #', $condition, null, PREG_SPLIT_DELIM_CAPTURE);
		for ($i = 0, $n = count($words); $i < $n; $i += 2)
		{
			// odd parts (modules)
			$name = strtolower($words[$i]);
			$words[$i] = ((isset(parent::$_buffer['modules'][$name])) && (parent::$_buffer['modules'][$name] === false))
				? 0
				: count(JModuleHelper::getModules($name));
		}

		$str = 'return ' . implode(' ', $words) . ';';

		return eval($str);
	}

	/**
	 * Count the number of child menu items
	 *
	 * @return  integer  Number of child menu items
	 *
	 * @since   11.1
	 */
	public function countMenuChildren()
	{
		static $children;

		if (!isset($children))
		{
			$dbo = JFactory::getDbo();
			$app = JFactory::getApplication();
			$menu = $app->getMenu();
			$active = $menu->getActive();
			if ($active)
			{
				$query->getQuery(true);
				$query->select('COUNT(*)');
				$query->from('#__menu');
				$query->where('parent_id = ' . $active->id);
				$query->where('published = 1');
				$children = $dbo->loadResult();
			}
			else
			{
				$children = 0;
			}
		}

		return $children;
	}

	/**
	 * Load a template file
	 *
	 * @param   string  $directory  The name of the template
	 * @param   string  $filename   The actual filename
	 *
	 * @return  string  The contents of the template
	 *
	 * @since   11.1
	 */
	protected function _loadTemplate($directory, $filename)
	{
		//		$component	= JApplicationHelper::getComponentName();

		$contents = '';

		// Check to see if we have a valid template file
		if (file_exists($directory . '/' . $filename))
		{
			// Store the file path
			$this->_file = $directory . '/' . $filename;

			//get the file content
			ob_start();
			require $directory . '/' . $filename;
			$contents = ob_get_contents();
			ob_end_clean();
		}

		// Try to find a favicon by checking the template and root folder
		$path = $directory . '/';
		$dirs = array($path, JPATH_BASE . '/');
		foreach ($dirs as $dir)
		{
			$icon = $dir . 'favicon.ico';
			if (file_exists($icon))
			{
				$path = str_replace(JPATH_BASE . '/', '', $dir);
				$path = str_replace('\\', '/', $path);
				$this->addFavicon(JURI::base(true) . '/' . $path . 'favicon.ico');
				break;
			}
		}

		return $contents;
	}

	/**
	 * Fetch the template, and initialise the params
	 *
	 * @param   array  $params  Parameters to determine the template
	 *
	 * @return  JDocumentHTML instance of $this to allow chaining
	 *
	 * @since   11.1
	 */
	protected function _fetchTemplate($params = array())
	{
		// Check
		$directory = isset($params['directory']) ? $params['directory'] : 'templates';
		$filter = JFilterInput::getInstance();
		$template = $filter->clean($params['template'], 'cmd');
		$file = $filter->clean($params['file'], 'cmd');

		if (!file_exists($directory . '/' . $template . '/' . $file))
		{
			$template = 'system';
		}

		// Load the language file for the template
		$lang = JFactory::getLanguage();

			$lang->load('tpl_' . $template, JPATH_BASE, null, false, true)
		||	$lang->load('tpl_' . $template, $directory . '/' . $template, null, false, true);

		// Assign the variables
		$this->template = $template;
		$this->baseurl = JURI::base(true);
		$this->params = isset($params['params']) ? $params['params'] : new JRegistry;

		// Load
		$this->_template = $this->_loadTemplate($directory . '/' . $template, $file);

		return $this;
	}

	/**
	 * Parse a document template
	 *
	 * @return  The parsed contents of the template
	 *
	 * @return  JDocumentHTML instance of $this to allow chaining
	 *
	 * @since   11.1
	 */
	protected function _parseTemplate()
	{
		$matches = array();

		if (preg_match_all('#<jdoc:include\ type="([^"]+)" (.*)\/>#iU', $this->_template, $matches))
		{
			$template_tags_first = array();
			$template_tags_last = array();

			// Step through the jdocs in reverse order.
			for ($i = count($matches[0]) - 1; $i >= 0; $i--)
			{
				$type = $matches[1][$i];
				$attribs = empty($matches[2][$i]) ? array() : JUtility::parseAttributes($matches[2][$i]);
				$name = isset($attribs['name']) ? $attribs['name'] : null;

				// Separate buffers to be executed first and last
				if ($type == 'module' || $type == 'modules')
				{
					$template_tags_first[$matches[0][$i]] = array('type' => $type, 'name' => $name, 'attribs' => $attribs);
				}
				else
				{
					$template_tags_last[$matches[0][$i]] = array('type' => $type, 'name' => $name, 'attribs' => $attribs);
				}
			}
			// Reverse the last array so the jdocs are in forward order.
			$template_tags_last = array_reverse($template_tags_last);

			$this->_template_tags = $template_tags_first + $template_tags_last;
		}

		return $this;
	}

	/**
	 * Render pre-parsed template
	 *
	 * @return string rendered template
	 *
	 * @since   11.1
	 */
	protected function _renderTemplate()
	{
		$replace = array();
		$with = array();

		foreach ($this->_template_tags as $jdoc => $args)
		{
			$replace[] = $jdoc;
			$with[] = $this->getBuffer($args['type'], $args['name'], $args['attribs']);
		}

		return str_replace($replace, $with, $this->_template);
	}
}
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