<?php
/**
 * This file holds the avia_htmlhelper class which renders html elements based on the options passed.
 * Basically all backend html output for the option pages is defined within this file
 *
 * @author		Christian "Kriesi" Budschedl
 * @copyright	Copyright ( c ) Christian Budschedl
 * @link		http://kriesi.at
 * @link		http://aviathemes.com
 * @since		Version 1.0
 * @package 	AviaFramework
 */
if(  ! defined( 'AVIA_FW' ) ) {  exit( 'No direct script access allowed' );  }

/**
 * AVIA HTML HELPER
 *
 * This class receives an extended $avia_superobject file when called, which holds the information which page we are currently viewing
 * Based on that information it renders all form elements necessary for creating the option page.
 * Methods can also be called without looping over the $avia_superobject, but for html generating purposes in other parts of the theme
 * (for example meta boxes, widgets etc)
 *
 * @package AviaFramework
 */

if( ! class_exists( 'avia_htmlhelper', false ) )
{
	class avia_htmlhelper extends aviaFramework\base\object_properties
	{
		/**
		 * This object holds the $avia_superobject with all the previously stored informations like theme/plugin data, options data, default values etc
		 *
		 * @var avia_superobject
		 */
		protected $avia_superobject;

		/**
		 * This object holds the avia_database_set controller methods to check if an item is grouped or not
		 *
		 * @var obj
		 */
		protected $set;

		/**
		 * Different behaviour for some methods based on the context (option_page/metabox)
		 *
		 * @var string
		 */
		public $context = 'options_page';

		/**
		 * Checks if a database entry with values is available and if so set to true to replace default values
		 *
		 * @var array
		 */
		protected  $replace_default = array();


		######################################################################
		# Non rendering Functions
		######################################################################


		/**
		 * Sets up the superobject, if it was passed
		 *
		 * @param avia_superobject|false|null $avia_superobject
		 */
		public function __construct( $avia_superobject = false )
		{
			if( ! $avia_superobject )
			{
				$avia_superobject = $GLOBALS['avia'];
			}

			$this->avia_superobject = $avia_superobject;

			$options = get_option( $this->avia_superobject->option_prefix );

			//check which option pages were already saved yet and need replacement of the default values
			foreach( $avia_superobject->option_pages as $page )
			{
				if( isset( $options[ $page['parent'] ] ) && $options[ $page['parent'] ] != '' )
				{
					$this->replace_default[ $page['slug'] ] = true;
				}
			}
		}

		/**
		 *
		 * @param string $slug
		 * @return array
		 */
		protected function get_page_elements( $slug )
		{
			$page_elements = array();

			if( isset( $this->avia_superobject->option_page_data ) )
			{
				foreach( $this->avia_superobject->option_page_data as $key => $value )
				{
					if( $value['slug'] == $slug )
					{
						$page_elements[ $key ] = $value;
					}
				}
			}

			return $page_elements;
		}


		######################################################################
		# Rendering Functions
		######################################################################

		/**
		 *
		 * @param array $option_page
		 * @param string $firstClass
		 * @return string
		 */
		public function create_container_based_on_slug( $option_page, $firstClass = '' )
		{
			$output = '';

			//get all elements of the current page and save them to the page elements array
			$page_elements = $this->get_page_elements( $option_page['slug'] );

			//subpage heading
			$output .= $this->render_page_container( $option_page, $firstClass );

			//page elements
			foreach( $page_elements as $key => $element )
			{
				$output .= $this->render_single_element( $element );
			}

			$output .= $this->render_page_container_end();

			return $output;
		}

		/**
		 * The function renders a single option-section which means it creates the divs around the form element, as well as descripio, adds values and sets ids
		 *
		 * @param array $element		holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string				contains the html code generated within the method
		 */
		public function render_single_element( array $element )
		{
			if( method_exists( $this, $element['type'] ) || ( isset( $element['use_function'] ) && function_exists( $element['type'] ) ) )
			{
				//init indices that are not set yet to prevent php notice
				if( ! isset( $element['id'] ) )
				{
					$element['id'] = '';
				}

				if( ! isset( $element['desc']  ) )
				{
					$element['desc']  = '';
				}

				if( ! isset( $element['slug']  ) )
				{
					$element['slug']  = '';
				}

				if( ! isset( $element['name']  ) )
				{
					$element['name']  = '';
				}

				if( ! isset( $element['label'] ) )
				{
					$element['label'] = '';
				}

				if( ! isset( $element['std'] ) )
				{
					$element['std'] = '';
				}

				if( ! isset( $element['class'] ) )
				{
					$element['class'] = '';
				}

				if( ! isset( $element['dynamic'] ) )
				{
					$element['dynamic'] = false;
				}


				if( $this->context != 'metabox' )
				{
					if( isset( $this->avia_superobject->page_slug ) &&
						isset( $this->replace_default[ $element['slug'] ] ) &&
						isset( $this->avia_superobject->options[ $this->avia_superobject->page_slug ][ $element['id'] ] ) )
					{
						$element['std'] = $this->avia_superobject->options[$this->avia_superobject->page_slug][$element['id']];
					}
				}

				//start rendering
				$output = '';

				//check if its a dynamic (sortable) element
				$dynamic_end = '';

				//check if we should only render the element itself or description as well
				if( $element['type'] == 'group' || ( isset( $element['nodescription'] ) && $element['nodescription'] != '' ) )
				{
					if( isset( $element['use_function'] ) )
					{
						$output .= $element['type']( $element );
					}
					else
					{
						$output .= $this->{$element['type']}( $element );
					}
				}
				else
				{
					$output .= $this->section_start( $element );
					$output .= $this->description( $element );

					if( isset( $element['use_function'] ) )
					{
						$output .= $element['type']( $element );
					}
					else
					{
						$output .= $this->{$element['type']}( $element );
					}

					$output .= $this->section_end( $element );
				}
				$output .= $dynamic_end;
				return $output;
			}
		}

		/**
		 * Creates a wrapper around a set of elements. This set can be cloned with javascript
		 *
		 * @param array $element		holds data like id, class and some js settings
		 * @return string				contains the html code generated within the method
		 */
		public function group( array $element )
		{
			$iterations = 1;
			$output = '';
			$real_id = $element['id'];

			if( ( isset( $element['std'] ) && is_array( $element['std'] ) ) && ! isset( $element['ajax_request'] ) )
			{
				$iterations = count( $element['std'] );
			}

			if( isset( $element['ajax_request'] ) )
			{
				$iterations = $element['ajax_request']; // ajax requests usually need only one element per default
			}

			for( $i = 0; $i < $iterations; $i++ )
			{
				if( ! isset( $element['linktext'] ) )
				{
					$element['linktext'] = 'add';
				}

				if( ! isset( $element['deletetext'] ) )
				{
					$element['deletetext'] = 'remove';
				}

				//start generating html output
				$element['id'] = $real_id . '-__-' . $i;
				$output   .= '<div class="avia_set ' . $element['class'] . '" id="avia_' . $element['id'] . '">';
				$output   .=	'<div class="avia_single_set">';

				$output	 .=			$this->get_subelements( $element, $i );

				$output  .=			'<span class="avia_clone_loading avia_hidden" href="#">Loading</span>';
				$output  .=			'<a class="avia_clone_set" href="#">' . $element['linktext'] . '</a>';
				$output  .=			'<a class="avia_remove_set" href="#">' . $element['deletetext'] . '</a>';
				$output  .=		'</div>';
				$output  .= '</div>';
			}

			return $output;
		}

		/**
		 * Creates the subelements for groups and specail objects like gallery upload
		 *
		 * @param array $element		holds data like id, class and some js settings
		 * @param int $i
		 * @return string				contains the html code generated within the method
		 */
		public function get_subelements( array $element, $i = 1 )
		{
			$output = '';

			foreach( $element['subelements'] as $key => $subelement )
			{
				if( isset( $element['std'] ) && is_array( $element['std'] ) && isset( $element['std'][ $i ][ $subelement['id'] ] ) )
				{
					$subelement['std'] = $element['std'][ $i ][ $subelement['id'] ];
				}

				if( isset( $element['ajax_request'] ) )
				{
					$subelement['ajax_request'] = $element['ajax_request'];
				}

				$subelement['subgroup_item'] = true;
				$subelement['id'] = $element['id'] . '-__-' . $subelement['id'];

				if( isset( $element['apply_all'] ) )
				{
					$subelement['apply_all'] = $element['apply_all'];
				}

				$output .= $this->render_single_element( $subelement );
			}

			return $output;
		}

		/**
		 * Renders the title and the page containing wrapper necessary for javascript sidebar tabs
		 *
		 * @param array $pageinfo		holds data like slug, parent, icon, class
		 * @param string $firstClass
		 * @return string				contains the html code generated within the method
		 */
		protected function render_page_container( $pageinfo, $firstClass )
		{
			if( ! isset( $pageinfo['sortable'] ) )
			{
				$pageinfo['sortable'] = '';
			}

			$class = ! empty( $pageinfo['class'] ) ? " {$pageinfo['class']}" : '';
			if( ( false === strpos( $pageinfo['icon'], 'http://' ) ) && ( false === strpos( $pageinfo['icon'], 'https://' ) ) )
			{
				$icon_url = AVIA_IMG_URL . 'icons/' . $pageinfo['icon'];
			}
			else
			{
				$icon_url = $pageinfo['icon'];
			}

			$output  = '<div class="avia_subpage_container ' . $firstClass . ' ' . $pageinfo['sortable'].'" id="avia_' . avia_backend_safe_string( $pageinfo['slug'] ) . '">';
			$output .=		'<div class="avia_section_header' . $class . '">';
			$output .=			'<strong class="avia_page_title" style="background-Image:url(' . $icon_url . ');">';
			$output .=				$pageinfo['title'];
			$output .=			'</strong>';
			$output .=		'</div>';

			return $output;
		}

		/**
		 * Closes the page container
		 *
		 * @return string				contains the html code generated within the method
		 */
		protected function render_page_container_end()
		{
			$output = '</div>';
			return $output;
		}

		/**
		 * Output a verification field with a callback button or
		 * a simple verification button for a group of option fields
		 *
		 * @since < 4.0
		 * @param array $element
		 * @return string
		 */
		public function verification_field( array $element )
		{
			$callback 			= $element['ajax'];
			$js_callback 		= isset( $element['js_callback'] ) ? $element['js_callback'] : '';
			$element['simple'] 	= true;
			$output  			= '';
			$ajax				= false;

			$ids_data = '';

			if( ! empty( $element['input_ids'] ) )
			{
				$ids_data = 'data-av-verify-fields="' . implode( ',', $element['input_ids'] ) . '"';
			}


			if( isset( $element['button-relabel'] ) && ! empty( $element['std'] ) )
			{
				$element['button-label'] = $element['button-relabel'];
			}

			$input_field = ( empty( $ids_data ) ) ? $this->text( $element ) : $this->hidden( $element );

			/**
			 * Filter to replace normal input field with a password input field and possibility to set to readonly
			 *
			 * @since 4.5.6.2
			 * @since 5.2					modified return values
			 * @param boolean
			 * @param array $element
			 * @return boolean|string				'readonly' | true
			 */
			$modify = apply_filters( 'avf_verification_password_field', false, $element );
			if( false !== $modify )
			{
				$new_attr = 'type="password"';
				if( is_string( $modify ) && 'readonly' == $modify )
				{
					$new_attr .= ' readonly="readonly"';
				}

				$input_field = str_replace( 'type="text"', $new_attr, $input_field );
			}

			$output .=	'<span class="avia_style_wrap avia_verify_input avia_upload_style_wrap">';
			$output .=		$input_field;
			$output .=		'<a href="#" ' . $ids_data . ' data-av-verification-callback="' . $callback . '" data-av-verification-callback-javascript="' . $js_callback . '" class="avia_button avia_verify_button" id="avia_check' . $element['id'] . '">' . $element['button-label'] . '</a>';
			$output .=	'</span>';

			$output .= isset($element['help']) ? "<small>{$element['help']}</small>" : '';

			$output .=	"<div class='av-verification-result'>";

			if( ( $element['std'] != '' ) || ( ! empty( $element['force_callback'] ) ) )
			{
				$output .= str_replace( 'avia_trigger_save', '', $callback( $element['std'] , $ajax, null, $element ) );
			}

			$output .=	'</div>';

			return $output;
		}

		/**
		 * The text method renders a single input type:text element
		 *
		 * @since 4.7.4.1			extended to support special types and custom attribute array
		 * @param array $element		holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string $output		contains the html code generated within the method
		 */
		public function text( array $element )
		{
			$attr = array(
						'type'	=> isset( $element['subtype'] ) ? $element['subtype'] : 'text',
						'id'	=> $element['id'],
						'name'	=> ! empty( $element['id_name'] ) ? $element['id_name'] : $element['id'],
						'value'	=> $element['std'],
						'class'	=> (array) $element['class'],
						'placeholder'	=> isset( $element['placeholder'] ) ? $element['placeholder'] : ''
					);

			unset( $element['subtype'] );

			if( ! empty( $element['readonly'] ) )
			{
				$attr['readonly'] = 'readonly';
			}

			if( isset( $element['class_on_value'] ) && ! empty( $element['std'] ) )
			{
				$attr['class'][] = $element['class_on_value'];
			}

			if( isset( $element['el_attr'] ) )
			{
				$element['el_attr'] = (array) $element['el_attr'];
				$attr = $this->array_merge_recursive_distinct( $attr, $element['el_attr'] );
			}


			$text = '<input ' . $this->attributes_from_array( $attr ) . ' />';

			if( isset( $element['simple'] ) )
			{
				return $text;
			}

			return '<span class="avia_style_wrap">' . $text . '</span>';
		}

		/**
		 * The hidden method renders a single input type:hidden element
		 *
		 * @param array	$element		holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string				contains the html code generated within the method
		 */
		public function hidden( array $element )
		{
			$output  = '<div class="avia_section avia_hidden">';
			$output .=		'<input type="hidden" value="' . $element['std'] . '" id="' . $element['id'] . '" name="' . $element['id'] . '"/>';
			$output .= '</div>';

			return $output;
		}

		/**
		 * The checkbox method renders a single input type:checkbox element
		 *
		 * @since 4.6.3 extended with toggle
		 * @param array $element	holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string			contains the html code generated within the method
		 * @todo: fix: checkboxes at metaboxes currently dont work
		 */
		public function checkbox( array $element )
		{
			$output = '';

			$checked = '';
			if( $element['std'] != '' && $element['std'] != 'disabled' )
			{
				$checked = 'checked="checked"';
			}

			$element['id_name'] = ! empty( $element['id_name'] ) ? $element['id_name'] : $element['id'];

			$input = '<input ' . $checked . ' type="checkbox" class="' . $element['class'] . '" value="' . $element['id'] . '" id="' . $element['id'] . '" name="' . $element['id_name'] . '" />';

			if( ! current_theme_supports( 'avia_option_pages_toggles' ) )
			{
				return $input;
			}

			$output .=	'<div class="av-switch-' . $element['id'] . ' av-toggle-switch active ' . $element['class'] . '">';
			$output .=		'<label>';
			$output .=			$input;
			$output .=			'<span class="toggle-track"></span>';
			$output .=		'</label>';
			$output .=	'</div>';

			return $output;
		}

		/**
		 * The radio method renders one or more input type:radio elements, based on the definition of the $elements array
		 *
		 * @param array $element		holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string				contains the html code generated within the method
		 */
		public function radio( array $element )
		{
			$output = '';
			$counter = 1;

			foreach( $element['buttons'] as $radiobutton )
			{
				$checked = '';
				if( $element['std'] == $counter )
				{
					$checked = 'checked="checked"';
				}

				$output  .= '<span class="avia_radio_wrap">';
				$output  .= '<input ' . $checked . ' type="radio" class="' . $element['class'] . '" ';
				$output  .= 'value="' . $counter . '" id="' . $element['id'] . $counter . '" name="' . $element['id'] . '"/>';

				$output  .= '<label for="' . $element['id'] . $counter . '">'. $radiobutton . '</label>';
				$output  .= '</span>';

				$counter++;
			}

			return $output;
		}

		/**
		 * The imgselect method renders one or more input type:radio elements, based on the definition of the $elements array with images
		 *
		 * @param array $element		holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string				contains the html code generated within the method
		 */
		public function imgselect( array $element )
		{
			$output = '';
			$counter = 1;

			foreach( $element['buttons'] as $key => $radiobutton )
			{
				$checked = '';
				$image = '';
				$extra_class = '';

				if( $element['std'] == $key )
				{
					$checked = 'checked="checked"';
				}

				$output  .= '<span class="avia_radio_wrap' . $extra_class . '">';
				$output  .= '<input ' . $checked . ' type="radio" class="' . $element['class'] . '" ';
				$output  .= 'value="' . $key . '" id="' . $element['id'] . $counter . '" name="' . $element['id'] . '"/>';

				$output  .= '<label for="' . $element['id'] . $counter . '">';

				if( isset( $element['images'] ) &&  ! empty( $element['images'] [$key ] ) )
				{
					$output  .= "<img class='radio_image' src='" . $element['images'][ $key ] . "' />";
					$extra_class = ' avia-image-radio';
				}

				$output  .= '<span>' . $radiobutton . '</span>';
				$output  .= '</label>';
				$output  .= '</span>';

				$counter++;
			}

			return $output;
		}

		/**
		 * The textarea method renders a single textarea element
		 *
		 * @param array $element		holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string				contains the html code generated within the method
		 */
		public function textarea( array $element )
		{
			$output  = '';

			$attr = array(
						'id'	=> $element['id'],
						'name'	=> ! empty( $element['id_name'] ) ? $element['id_name'] : $element['id'],
						'class'	=> (array) $element['class'],
						'rows'	=> 5,
						'cols'	=> 30
					);

			if( isset( $element['el_attr'] ) )
			{
				$element['el_attr'] = (array) $element['el_attr'];
				$attr = $this->array_merge_recursive_distinct( $attr, $element['el_attr'] );
			}

			$output .=	'<textarea ' . $this->attributes_from_array( $attr ) . ' >';
			$output .=		$element['std'];
			$output .=	'</textarea>';

			return $output;
		}

		/**
		 * The link_controller method renders a bunch of links that are able to set values for other page elements
		 *
		 * @param array $element		holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string				contains the html code generated within the method
		 */
		public function link_controller( array $element )
		{
			$output  = '';
			$output .= '<div class="' . $element['class'] . '">';

			if( ! empty( $element['subtype'] ) )
			{
				$counter = 0;

				foreach( $element['subtype'] as $key => $array )
				{
					$counter ++;
					$active = $style = $class = $data = '';

					if( isset( $array[ $element['id'] ] ) && $array[ $element['id'] ] == $element['std'] )
					{
						$active = ' avia_link_controller_active';
					}

					if( isset( $array['style'] ) )
					{
						$style .= ' style="' . $array['style'] . '" ';
						unset( $array['style'] );
					}

					if( isset( $array['class'] ) )
					{
						$class .= ' ' . $array['class'];
						unset( $array['class'] );
					}

					foreach( $array as $datakey => $datavalue )
					{
						$data .= "data-" . $datakey . "='" . $datavalue . "' ";
					}

					$output .= "<a href='#' {$data} {$style} class='avia_link_controller avia_link_controller_{$counter}{$active}{$class}'>{$key}</a>";
				}
			}

			$output .= '<input type="hidden" value="' . $element['std'] . '" id="' . $element['id'] . '" name="' . $element['id'] . '"/>';

			$output .= '</div>';
			return $output;
		}

		/**
		 * The upload method renders a single upload element so users can add their own pictures
		 * the script first gets the id of a hidden post that should store the image. if no post is set it will create one
		 * then we check if a basic url based upload should be used or a more sophisticated id based for slideshows and feauted images, which need
		 * the images resized automatically
		 *
		 * @param array $element		holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string				the html code generated within the method
		 */
		public function upload( array $element )
		{
			$output  = '';

			$gallery_mode = false;
			$id_generated = false;
			$image_url = $element['std'];

			if( empty( $element['button-label'] ) )
			{
				$element['button-label'] = 'Upload';
			}

			//get post id of the hidden post that stores the image
			if( ! empty( $element['attachment-prefix'] ) )
			{
				if( empty( $element['std'] ) && empty( $element['no-attachment-id'] ) )
				{
					$element['std'] = uniqid();
					$id_generated = true;
				}

				$gallery_mode = true;
				$postId = avia_media::get_custom_post( $element['attachment-prefix'] . $element['std'] );
			}
			else
			{
				$postId = avia_media::get_custom_post( $element['name'] );
				if( is_numeric( $element['std'] ) )
				{
					$image_url = wp_get_attachment_image_src( $element['std'], 'full' );
					$image_url = is_array( $image_url ) ? $image_url[0] : '';
				}
			}
			//switch between normal url upload and advanced image id upload
			$mode = $prevImg = '';

			//video or image, advanced or default upload?

			if( isset( $element['subtype'] ) )
			{
				//	is not used in Enfold up tp 4.8.3 - can be removed in a future version
				$mode = ' avia_advanced_upload';

				if( ! is_numeric( $element['std'] ) && $element['std'] != '' )
				{
					$prevImg = '<a href="#" class="avia_remove_image">×</a><img src="' . AVIA_IMG_URL . 'icons/video.png" alt="" />';
				}
				else if( $element['std'] != '' )
				{
					$prevImg = '<a href="#" class="avia_remove_image">×</a>' . wp_get_attachment_image( $element['std'], array( 100, 100 ) );
				}
			}
			else
			{
				if( ! preg_match( '!\.jpg$|\.jpeg$|\.ico$|\.png$|\.gif$|.svg$|.webp$!', $image_url ) && $image_url != '' )
				{
					$prevImg = '<a href="#" class="avia_remove_image">×</a><img src="' . AVIA_IMG_URL . 'icons/video.png" alt="" />';
				}
				else if( $image_url != '' )
				{
					$prevImg = '<a href="#" class="avia_remove_image">×</a><img src="' . $image_url . '" alt="" />';
				}
			}

			if( $gallery_mode )
			{
				$image_url_array = array();
				$attachments = get_children( array(
									'post_parent'		=> $postId,
									'post_status'		=> 'inherit',
									'post_type'			=> 'attachment',
									'post_mime_type'	=> 'image',
									'order'				=> 'ASC',
									'orderby'			=> 'menu_order ID'
								));

				foreach( $attachments as $key => $attachment )
				{
					$image_url_array[] = avia_image_by_id( $attachment->ID, array( 'width' => 80, 'height' => 80 ) );
				}

				$output  .= "<div class='avia_thumbnail_container'>";

				if( isset( $image_url_array[0] ) )
				{
					foreach( $image_url_array as $key => $img )
					{
						$output .= "<div class='avia_gallery_thumb'><div class='avia_gallery_thumb_inner'>{$img}</div></div>";
					}

					$output .= "<div class='avia_clear'></div>";
				}

				$output .= '</div>';
			}

			$data = '';
			$upload_class = 'avia_uploader';

			global $wp_version;

			if( version_compare( $wp_version, '3.5', '>=' ) && empty( $element['force_old_media'] ) && empty( $element['subtype'] ) ) //check if new media upload is enabled
			{
				$upload_class = 'avia_uploader_35';

				if( empty( $element['data'] ) )
				{
					//	Layout changed, we need to adjust CSS for hidden elements
					$wp53 = version_compare( $wp_version, '5.3', '>=' ) ? ' avia-wp-53' : '';

					$element['data'] = array(
											'target' => $element['id'],
											'title'  => $element['name'],
											'type'   => 'image',
											'button' => $element['label'],
											'class'  => 'media-frame av-media-frame-image-only' . $wp53,
											'frame'  => 'select',
											'state'	 => 'av_select_single_image',
											'fetch'  => 'url',
									);
				}

				foreach( $element['data'] as $key => $value )
				{
					if( is_array( $value ) )
					{
						$value = implode( ', ', $value );
					}

					$data .= " data-{$key}='{$value}' ";
				}
			}

			$output .= '<div class="avia_upload_container avia_upload_container_' . $postId . $mode . '">';
			$output .=		'<span class="avia_style_wrap avia_upload_style_wrap">';

			$id = $element['id'];
			$id_name = empty( $element['id_name'] ) ? $element['id'] : $element['id_name'];

			$output .=			'<input type="text" class="avia_upload_input ' . $element['class'] . '" value="' . $element['std'] . '" name="'. $id_name .'" id="'. $id .'" />';
			$output .=			'<a ' . $data . ' href="#' . $postId . '" class="avia_button ' . $upload_class . '" title="' . $element['name'] . '" id="avia_upload' . $element['id'] . '">' . $element['button-label'] . '</a>';
			$output .=		'</span>';
			$output .=		'<div class="avia_preview_pic" id="div_' . $element['id'] . '">' . $prevImg . '</div>';
			$output .=		'<input class="avia_upload_insert_label" type="hidden" value="' . $element['label'] . '" />';

			if( $gallery_mode )
			{
				$output .=	'<input class="avia_gallery_mode" type="hidden" value="' . $postId . '" />';
			}

			$output .= '</div>';

			return $output;
		}

		/**
		 * Renders a single input type:text element. If autodetect is set the color picker trys to get the color from an image upload element
		 *
		 * @param array $element		holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string				contains the html code generated within the method
		 */
		public function colorpicker( array $element )
		{
			if( empty( $element['id_name'] ) )
			{
				$element['id_name'] = $element['id'];
			}

			$output  = '<span class="avia_style_wrap avia_colorpicker_style_wrap">';
			$output .=		'<input type="text" class="avia_color_picker ' . $element['class'] . '" value="' . $element['std'] . '" id="' . $element['id'] . '" name="' . $element['id_name'] . '"/>';
			$output .=		'<span class="avia_color_picker_div"></span>';
			$output .= '</span>';

			return $output;
		}

		/**
		 * Renders a single zip file upload/insert element: user can select a zip file and a custom function/class will be executed then
		 *
		 * @param array $element		holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string				contains the html code generated within the method
		 */
		public function file_upload( array $element )
		{
			# deny if user is no super admin
			$output = '';
			$cap = apply_filters( 'avf_file_upload_capability', 'update_plugins', $element );

			if( ! current_user_can( $cap ) )
			{
				return "<div class='av-error'><p>Using this feature is reserved for Super Admins</p><p>You unfortunately don't have the necessary permissions.</p></div>";
			}

			#check if its allowed on multisite
			if( is_multisite() && strpos( get_site_option( 'upload_filetypes' ), $element['file_extension'] ) === false )
			{
				$file = strtoupper( $element['file_extension'] );

				return "<div class='av-error'><p>You are currently on a WordPress multisite installation and .{$file} file upload is disabled. <br/>Go to your <a href='".network_admin_url('settings.php')."'>Network settings page</a> and add the '{$file}' file extension to the list of allowed 'Upload file types'</p></div>";
			}

			if( ! ini_get( 'allow_url_fopen' ) && ! empty( $element['fopen_check'] ) )
			{
			   $output .= "<div class='av-error'><p>Your Server has disabled the 'allow_url_fopen' setting in your php.ini which might cause problems when uploading and processing files</p></div>";
			}

			# is user is alowed to extract files create the upload/insert button
			if( empty( $element['data'] ) )
			{
				$element['data'] =  array(
										'target'	=> $element['id'],
										'title'		=> $element['title'],
										'type'		=> $element['file_type'],
										'button'	=> $element['button'],
										'trigger'	=> $element['trigger'],
										'class'		=> 'media-frame '
									);

				$filter_keys = array( 'filter_tabs', 'filter_values', 'skip_tabs', 'skip_values' );
				foreach( $filter_keys as $key )
				{
					if( ! empty( $element[ $key ] ) )
					{
						$element['data'][ $key ] = $element[ $key ];
					}
				}
			}

			$data = '';

			foreach( $element['data'] as $key => $value )
			{
				if( is_array( $value ) )
				{
					$value = implode( ', ', $value );
				}

				$data .= " data-{$key}='{$value}' ";
			}


			$class 	 = 'avia_button avia-media-35 aviabuilder-file-upload avia-builder-file-insert ' . $element['class'];
			$output .= '<span class="avia_style_wrap"><a href="#" class=" ' . $class . '" ' . $data . ' title="' . esc_attr( $element['title'] ) . '">' . $element['title'] . '</a></span>';
			$output .= '<span class="avia_loading avia_upload_loading"></span>';
			//$output .= $this->text($element);
			$output .= $this->hidden( $element );

			$output .= apply_filters( 'avf_file_upload_extra', '', $element );


			return $output;
		}

		/**
		 * The select method renders a single select element: it either lists custom values, all wordpress pages or all wordpress categories
		 *
		 * @since 4.2.7 - by Günter:
		 *		- Support for hierarchical display of pages, posts, custom post types and taxonomies was added by default (can be deselected)
		 *		- Filter for post_status other than publish is now possible - title is extended for those post_status
		 *
		 * @param array $element		holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string				contains the html code generated within the method
		 */
		public function select( array $element )
		{
			$base_url	 = '';
			$folder_data = '';

			if( $element['subtype'] == 'page' )
			{
				$select = isset( $element['option_none_text'] ) ? $element['option_none_text'] : __( 'Select page', 'avia_framework' );

				if( ! isset( $element['hierarchical'] ) || ( 'no' != $element['hierarchical'] ) )
				{
					$args = array(
								'option_none_text'	=> $select,
								'option_none_value'	=> '',
								'option_no_change'	=> ''
							);

					$element = wp_parse_args( $element, $args );

					$html = $this->select_hierarchical_post_types( $element, 'page' );

					if( false !== $html )
					{
						return $html;
					}
				}

				/**
				 * @since 4.2.7
				 */
				$limit = apply_filters( 'avf_dropdown_post_number', 9999, $element['subtype'], $element, 'avia_fw_select' );

				/**
				 * Make sure we have no spaces
				 */
				$post_status = is_array( $element['post_status'] ) ? $element['post_status'] : explode( ',', (string) $element['post_status'] );
				$element['post_status'] = array_map( function( $value ) { $value = trim($value); return $value;}, $post_status );

				$args = array(
							'post_type'		=> $element['subtype'],
							'post_status'	=> empty( $element['post_status'] ) ? 'publish' : $element['post_status'],
							'sort_column'	=> 'post_title',
							'sort_order'	=> 'ASC',
							'number'		=> $limit
						);

				$entries = get_pages( $args );
			}
			else if( $element['subtype'] == 'post' )
			{
				$select = isset( $element['option_none_text'] ) ? $element['option_none_text'] : __( 'Select post', 'avia_framework' );

				if( ! isset ( $element['hierarchical'] ) || ( 'no' != $element['hierarchical'] ) )
				{
					$args = array(
								'option_none_text'	=> $select,
								'option_none_value'	=> '',
								'option_no_change'	=> ''
							);

					$element = wp_parse_args( $element, $args );

					$html = $this->select_hierarchical_post_types( $element, 'portfolio' );

					if( false !== $html )
					{
						return $html;
					}
				}

				/**
				 * @since 4.2.7
				 */
				$limit = apply_filters( 'avf_dropdown_post_number', 9999, $element['subtype'], $element, 'avia_fw_select' );

				$args = array(
							'post_type'		=> $element['subtype'],
							'post_status'	=> empty( $element['post_status'] ) ? 'publish' : $element['post_status'],
							'orderby'		=> 'post_title',
							'order'			=> 'ASC',
							'numberposts'	=> $limit
					);

				$entries = get_posts( $args );
			}
			else if( $element['subtype'] == 'cat' )
			{
				$add_taxonomy = '';
				$sel_tax = 'category';		//	default taxonomy

				if( ! empty( $element['taxonomy'] ) )
				{
					$add_taxonomy = '&taxonomy=' . $element['taxonomy'];
					$sel_tax = $element['taxonomy'];
				}

				$select = isset ( $element['option_none_text'] ) ? $element['option_none_text'] : __( 'Select category', 'avia_framework' );

				if( ! isset ( $element['hierarchical'] ) || ( 'no' != $element['hierarchical'] ) )
				{
					$args = array(
								'option_none_text'	=> $select,
								'option_none_value'	=> '',
								'option_no_change'	=> ''
							);

					$element = wp_parse_args( $element, $args );

					$html = $this->select_hierarchical_taxonomy( $element, $sel_tax );

					if( false !== $html )
					{
						return $html;
					}
				}

				$entries = get_categories('title_li=&orderby=name&hide_empty=0' . $add_taxonomy );

			}
			else if( $element['subtype'] == 'post_type' )
			{
				$select = isset( $element['option_none_text'] ) ? $element['option_none_text'] : __( 'Select post types...', 'avia_framework' );

				$args = array(
								'_builtin' => true,
								'public'   => true
							);
				$post_types = get_post_types( $args, 'objects', 'or' );

				$entries = array();
				foreach ( $post_types  as $post_type )
				{
					if( isset( $element['features'] ) && is_array( $element['features'] ) )
					{
						$skip = false;
						foreach( $element['features'] as $feature )
						{
							if( ! post_type_supports( $post_type->name, $feature ) )
							{
								$skip = true;
								break;
							}
						}

						/**
						 * @used_by			Avia_Gutenberg					10
						 * @since 4.5.2
						 */
						$skip = apply_filters( 'avf_select_post_types', $skip, $post_type, 'option_page', $element );

						if( $skip )
						{
							continue;
						}
					}

					$label = array();
					if( $post_type->_builtin )
					{
						$label[] = __( 'built in', 'avia_framework' );
					}

					/**
					 * @used_by				Avia_Gutenberg				10
					 * @since 4.5.2
					 */
					$label = apply_filters( 'avf_select_post_types_status', $label, $post_type, 'option_page', $element );

					if( empty( $label ) )
					{
						$label = '';
					}
					else
					{
						$label = ' (' . implode( ', ', $label ) . ')';
					}

					$label = $post_type->label . $label;
					$entries[ $label ] = $post_type->name;
				}
			}
			else if( $element['subtype'] == 'option_page_tabs' )
			{
				global $avia;

				$entries = array();
				$avia_pages = is_array( $avia->option_pages ) ? $avia->option_pages : array();

				$pages = array();

				foreach( $avia_pages as $avia_page )
				{
					if( $avia_page['parent'] == $avia_page['slug'] )
					{
						$pages[ $avia_page['parent'] ] = $avia_page['title'];
					}
				}

				//	only add options page title if more than 1 exists
				if( count( $pages ) <= 1 )
				{
					$pages = array();
				}

				foreach( $avia_pages as $avia_page )
				{
					$desc = array_key_exists( $avia_page['parent'], $pages ) ? ' (' . $pages[ $avia_page['parent'] ] . ')' : '';
					$entries[ $avia_page['title'] . $desc ] = $avia_page['parent'] . ':' . $avia_page['slug'];
				}
			}
			else
			{
				$select = __( 'Select...', 'avia_framework' );
				$entries = $element['subtype'];
				$add_entries = array();

				if( isset( $element['folder'] ) )
				{
					$add_file_array = avia_backend_load_scripts_by_folder( AVIA_BASE . $element['folder'] );
					$base_url = AVIA_BASE_URL;
					$folder_data = "data-baseurl='{$base_url}'";

					if( is_array( $add_file_array ) )
					{
						foreach( $add_file_array as $file )
						{
							$skip = false;

							if( ! empty($element['exclude'] ) )
							{
								foreach( $element['exclude'] as $exclude)
								{
        							if( stripos( $file, $exclude ) !== false )
									{
										$skip = true;
									}
    							}
							}

							if( strpos( $file, '.' ) !== 0 && $skip == false )
							{
								$add_entries[ $element['folderlabel'] . $file ] = '{{AVIA_BASE_URL}}' . $element['folder'] . $file;
							}
						}


						if( isset( $element['group'] ) )
						{
							$entries[ $element['group'] ] = $add_entries;
						}
						else
						{
							$entries = array_merge( $entries, $add_entries );
						}
					}
				}
			}


			//check for onchange function
			$onchange = '';
			if( isset( $element['onchange'] ) )
			{
				$onchange = " data-avia-onchange='" . $element['onchange'] . "' ";
				$element['class'] .= ' avia_onchange';
			}

			if( isset( $element['option_all_text'] ) )
			{
				$select_all_val = is_string( $element['option_all_text'] ) ? $element['option_all_text'] : __( 'Select all ......', 'avia_framework' );
				$all = array( $select_all_val => 'avia_all_elements' );
				$entries = array_merge( $all, $entries );
			}

			$multi = $multi_class = '';
			if( isset( $element['multiple'] ) )
			{
				$multi_class = ' avia_multiple_select';
				$multi = 'multiple="multiple" size="' . $element['multiple'] . '"';

				if( ! empty( $element['std'] ) )
				{
					$element['std'] = explode( ',', (string) $element['std'] );
				}
			}

			$element['id_name'] = ! empty( $element['id_name'] ) ? $element['id_name'] : $element['id'];

			$output  = '<span class="avia_style_wrap avia_select_style_wrap' . $multi_class . '"><span class="avia_select_unify">';
			$output .= '<select ' . $folder_data . ' ' . $onchange . ' ' . $multi . ' class="' . $element['class'] . '" id="' . $element['id'] .'" name="'. $element['id_name'] . '"> ';

			if( ! isset( $element['no_first'] ) )
			{
				$output .= '<option value="">' . $select . '</option>  ';
				$fake_val = $select;
			}

			$real_entries = array();
			foreach( $entries as $key => $entry )
			{
				if( ! is_array( $entry ) )
				{
					$real_entries[ $key ] = $entry;
				}
				else
				{
					$real_entries[ 'option_group_' . $key ] = $key;

					foreach( $entry as $subkey => $subentry )
					{
						$real_entries[$subkey] = $subentry;
					}

					$real_entries[ 'close_option_group_' . $key ] = 'close';
				}
			}

			$entries = $real_entries;

			foreach( $entries as $key => $entry )
			{
				if( $element['subtype'] == 'page' || $element['subtype'] == 'post' )
				{
					$id = $entry->ID;
					$title = $this->handler_wp_list_pages( avia_wp_get_the_title( $id ), $entry );
				}
				else if( $element['subtype'] == 'cat' )
				{
					if( isset( $entry->term_id ) )
					{
						$id = $entry->term_id;
						$title = $entry->name;
					}
				}
				else
				{
					$id = $entry;
					$title = $key;
				}

				if( ! empty( $title ) || ( isset( $title ) && $title === 0 ) )
				{
					if( ! isset( $fake_val ) )
					{
						$fake_val = $title;
					}

					$selected = '';
					if( $element['std'] == $id || ( is_array( $element['std'] ) && in_array( $id, $element['std'] ) ) )
					{
						$selected = 'selected="selected"';
						$fake_val = $title;
					}

					if( $base_url &&  str_replace( $base_url, '{{AVIA_BASE_URL}}', $element['std'] ) == $id )
					{
						$selected = 'selected="selected"';
						$fake_val = $title;
					}

					if( strpos( $title , 'option_group_' ) === 0 )
					{
						$output .= "<optgroup label='{$id}'>";
					}
					else if( strpos( $title , 'close_option_group_' ) === 0 )
					{
						$output .= '</optgroup>';
					}
					else
					{
						$output .= "<option {$selected} value='{$id}'>{$title}</option>";
					}
				}
			}
			$output .= '</select>';
			$output .= '<span class="avia_select_fake_val">' . $fake_val . '</span>';
			$output .= '</span></span>';

			if( isset( $element['hook'] ) )
			{
				$output .= '<input type="hidden" name="' . $element['hook'] . '" value="' . $element['hook'] . '" />';
			}

			return $output;
		}

		/**
		 * Return an indented dropdown list for hierarchical post types
		 * Takes care of complete output
		 *
		 * @since 4.2.7
		 * @added_by Günter
		 * @param array $element
		 * @param string $post_type
		 * @return string|false
		 */
		protected function select_hierarchical_post_types( array $element, $post_type = 'page' )
		{
			$defaults = array(
								'id'				=> '',
								'std'				=> 0,
								'label'				=> false,			//	for option group
								'class'				=> '',
								'hierarchical'		=> 'yes',			//	'yes' | 'no'
								'post_status'		=> 'publish',		//	array or separated by comma,
								'option_none_text'	=> '',				//	text to display for 'Nothing selected'
								'option_none_value'	=> '',				//	value for 'option_none_text'
								'option_no_change'	=> ''				//	value for 'no change' - set to -1 by WP default
							);

			$element = array_merge( $defaults, $element );

			/**
			 * return, if element should not display a hierarchical structure
			 */
			if( 'no' == $element['hierarchical'] )
			{
				return false;
			}

			/**
			 * wp_dropdown_pages() does not support multiple selection by default.
			 * Would need to overwrite Walker_PageDropdown to add this feature.
			 *
			 * Can be done in future if necessary.
			 */
			if( isset( $element['multiple'] ) )
			{
				return false;
			}

			$post_type_object = get_post_type_object( $post_type );

			if ( ! ( $post_type_object instanceof WP_Post_Type && $post_type_object->hierarchical ) )
			{
				return false;
			}

			/**
			 * If too many entries limit output and only show non hierarchical
			 *
			 * @since 4.2.7
			 */
			$limit = apply_filters( 'avf_dropdown_post_number', 4000, $post_type, $element, 'avia_fw_select_hierarchical' );
			$count = wp_count_posts( $post_type );
			if( ! isset( $count->publish ) || ( $count->publish > $limit ) )
			{
				return false;
			}

			/**
			 * Make sure we have no spaces
			 */
			$post_status = is_array( $element['post_status'] ) ? $element['post_status'] : explode( ',', (string) $element['post_status'] );
			$element['post_status'] = array_map( function( $value ) { $value = trim($value); return $value;}, $post_status );

			/**
			 * check for onchange function
			 */
			$onchange = '';
			if( isset( $element['onchange'] ) )
			{
				$onchange = " data-avia-onchange='{$element['onchange']}' ";
				$element['class'] .= ' avia_onchange';
			}

			$selected = $element['std'];
			$fake_val = '';

			if( isset( $element['no_first'] ) )
			{
				$element['option_none_text'] = '';
				$element['option_none_value'] = '';
			}
			else
			{
				$fake_val = $element['option_none_text'];
			}

			if( ! empty( $selected ) )
			{
				$post = get_post( $selected );
				if( $post instanceof WP_Post )
				{
					$fake_val = $this->handler_wp_list_pages( avia_wp_get_the_title( $post->ID ), $post );
				}
			}

			$multi = $multi_class = '';
			if( isset( $element['multiple'] ) )
			{
				$multi_class = ' avia_multiple_select';
				$multi = ' multiple="multiple" size="' . $element['multiple'] . '" ';
			}

			$dropdown_args = array(
							'post_type'				=> $post_type,
							'exclude_tree'			=> false,
							'selected'				=> $selected,
							'name'					=> $element['id'],
							'id'					=> $element['id'],
							'show_option_none'		=> $element['option_none_text'],
							'option_none_value'		=> $element['option_none_value'],
							'show_option_no_change' => $element['option_no_change'],
							'sort_column'			=> 'post_title',
							'echo'					=> 0,
							'class'					=> $element['class'] . $multi_class,
							'post_status'			=> $element['post_status'],
					//		'depth'					=> 0,
					//		'child_of'				=> 0,
					//		'value_field'			=> 'ID',
							);

			/**
			 * Allow to add info for non public post status
			 */
			add_filter( 'list_pages', array( $this, 'handler_wp_list_pages' ), 10, 2 );

			$html = wp_dropdown_pages( $dropdown_args );

			remove_filter( 'list_pages', array( $this, 'handler_wp_list_pages' ), 10, 2 );

			$html = str_replace( '<select', '<select ' . $multi . $onchange, $html );

			return $this->get_hierarchical_select_template( $element, $html, $multi_class, $fake_val );
		}

		/**
		 * Add post status in case of non public
		 *
		 * @since 4.2.7
		 * @added_by Günter
		 * @param string $title
		 * @param object $page
		 * @return string
		 */
		public function handler_wp_list_pages( $title, $page )
		{
			if( $page instanceof WP_Post || ( isset( $page->ID ) && isset( $page->post_status ) ) )
			{
				if( 'publish' != $page->post_status )
				{
					$title .= ' ( ----> ' . ucfirst( get_post_status( $page->ID ) ) . ' )';
				}
			}

			return $title;
		}

		/**
		 * Return an indented dropdown list of terms for hierarchical $taxonomy
		 *
		 * @since 4.2.7
		 * @added_by Günter
		 * @param array $element
		 * @param string $taxonomy
		 * @return string|false
		 */
		protected function select_hierarchical_taxonomy( array $element, $taxonomy = 'category' )
		{
			$defaults = array(
								'id'				=> '',
								'std'				=> array( '', 0 ),
								'label'				=> false,			//	for option group
								'class'				=> '',
								'hierarchical'		=> 'yes',			//	'yes' | 'no'
								'option_none_text'	=> '',				//	text to display for 'Nothing selected'
								'option_none_value'	=> '',				//	value for 'option_none_text'
								'option_no_change'	=> ''				//	value for 'no change' - set to -1 by WP default
							);

			$element = array_merge( $defaults, $element );

			/**
			 * return, if element should not display a hierarchical structure
			 */
			if( 'no' == $element['hierarchical'] )
			{
				return false;
			}

			/**
			 * wp_dropdown_pages() does not support multiple selection by default.
			 * Would need to overwrite Walker_CategoryDropdown to add this feature.
			 *
			 * Can be done in future if necessary.
			 */
			if( isset( $element['multiple'] ) )
			{
				return false;
			}

			$obj_ta = get_taxonomy( $taxonomy );

			if ( ! $obj_ta instanceof WP_Taxonomy )
			{
				return false;
			}

			/**
			 * check for onchange function
			 */
			$onchange = '';
			if( isset( $element['onchange'] ) )
			{
				$onchange = " data-avia-onchange='" . $element['onchange'] . "' ";
				$element['class'] .= ' avia_onchange';
			}

			$selected = $element['std'];
			$fake_val = '';

			if( isset( $element['no_first'] ) )
			{
				$element['option_none_text'] = '';
				$element['option_none_value'] = '';
			}
			else
			{
				$fake_val = $element['option_none_text'];
			}

			if( ! empty( $selected ) )
			{
				$term = get_term_by( 'term_id', $selected, $taxonomy );
				if( $term instanceof WP_Term )
				{
					$fake_val = $term->name;
				}
			}

			$multi = $multi_class = '';
			if( isset( $element['multiple'] ) )
			{
				$multi_class = ' avia_multiple_select';
				$multi = ' multiple="multiple" size="' . $element['multiple'] . '" ';
			}

			$args = array(
						'taxonomy'				=> $taxonomy,
						'hierarchical'			=> true,
						'depth'					=> 20,
						'selected'				=> $selected,
						'name'					=> $element['id'],
						'id'					=> $element['id'],
						'show_option_none'		=> $element['option_none_text'],
						'option_none_value'		=> $element['option_none_value'],
						'show_option_no_change' => $element['option_no_change'],
						'orderby'				=> 'name',
						'order'					=> 'ASC',
						'echo'					=> false,
						'class'					=> $element['class'] . $multi_class,
						'hide_empty'			=> false,
						'show_count'			=> true,
						'hide_if_empty'			=> false,
//						'child_of'				=> 0,
//						'exclude'				=> '',
//						'include'				=> '',
//						'tab_index'				=> 0,
//						'value_field'			=> 'term_id',
					);

			$html = wp_dropdown_categories( $args );

			$html = str_replace( '<select', '<select ' . $multi . $onchange, $html );

			return $this->get_hierarchical_select_template( $element, $html, $multi_class, $fake_val );
		}

		/**
		 * Returns the HTML template for a hierarchical select dropdown
		 *
		 * @since 4.2.7
		 * @added_by Günter
		 * @param array $element
		 * @param string $html
		 * @param string $multi_class
		 * @param string $fake_val
		 * @return string
		 */
		protected function get_hierarchical_select_template( array $element, $html, $multi_class, $fake_val )
		{
			$output  = '<span class="avia_style_wrap avia_select_style_wrap' . $multi_class . '">';
			$output .=		'<span class="avia_select_unify">';
			$output .=			$html;
			$output .=			'<span class="avia_select_fake_val">' . $fake_val . '</span>';
			$output .=		'</span>';
			$output .=	'</span>';

			if( isset( $element['hook'] ) )
			{
				$output.= '<input type="hidden" name="' . $element['hook'] . '" value="' . $element['hook'] . '" />';
			}

			return $output;
		}

		/**
		 *
		 * @param array $element
		 * @return string
		 */
		public function select_sidebar( array $element )
		{
			$save_as = array();

			foreach( $element['additions'] as $key => $additions )
			{
				if( $additions == '%result%' )
				{
					$save_as = $key;
					unset( $element['additions'][ $key ] );
				}
			}

			if( empty( $save_as ) )
			{
				$element['subtype'] = av_backend_registered_sidebars( $element['additions'], $element['exclude'] );
			}
			else
			{
				$element['subtype'] = $element['additions'];
				$element['subtype'][ $save_as ] = av_backend_registered_sidebars( array(), $element['exclude'] );
			}

			return $this->select( $element );
		}

		/**
		 * Returns a select box of available menus
		 * In case you need extra options in front add them to subtype array. Menus will be appended.
		 *
		 * @since 4.5
		 * @added_by Günter
		 * @param array $element
		 * @return string
		 */
		public function select_menu( array $element )
		{
			$locations = get_registered_nav_menus();
			$nav_menus = wp_get_nav_menus();

			/**
			 * array_flip does not work because plugins like WPML might return '' or null for value which throws a warning
			 *
			 * $menu_locations = array_flip( get_nav_menu_locations() );
			 */
			$menu_locations = array();
			$temp = get_nav_menu_locations();
			foreach ( $temp as $loc => $term_id )
			{
				if( is_numeric( $term_id ) && ( $term_id > 0 ) )
				{
					$menu_locations[ $term_id ] = $loc;
				}
			}

			if( ! isset( $element['subtype'] ) || ! is_array( $element['subtype'] ) )
			{
				$element['subtype'] = array();
			}

			foreach( $nav_menus as $menu )
			{
				$key = wp_html_excerpt( $menu->name, 40, '&hellip;' );
				if( isset( $menu_locations[ $menu->term_id ] ) )
				{
					if( isset( $locations[ $menu_locations[ $menu->term_id ] ] ) )
					{
						$key .= ' (--&gt; ' . wp_html_excerpt( $locations[ $menu_locations[ $menu->term_id ] ], 70, '&hellip;' ) . ')';
					}
				}

				$element['subtype'][ $key ] = $menu->term_id;
			}

			return $this->select( $element );
		}

		/**
		 * Renders a div for a visually conected group
		 *
		 * @param array $element		holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string				contains the html code generated within the method
		 */
		public function visual_group_start( array $element )
		{
			$required = $extraclass = $data = '';

			if( isset( $element['required'] ) && ! empty( $element['required'] ) )
			{
				$required = '<input type="hidden" value="' . $element['required'][0] . '::' . $element['required'][1] . '" class="avia_required" />';
				$extraclass = ' avia_hidden avia_required_container';
			}
			$data = '';
			if( isset( $element['name'] ) )
			{
				$data .= " data-group-name='" . $element['name'] . "'";
			}

			if( isset( $element['global_class'] ) )
			{
				$data .= " data-av_set_global_tab_active='" . element['global_class'] . "'";
			}

			if( isset( $element['inactive'] ) )
			{
				$data .= " data-group-inactive='" . htmlspecialchars( $element['inactive'], ENT_QUOTES ) . "'";
				$extraclass .= ' inactive_visible';
			}

			$output  = '<div class="avia_visual_set avia_' . $element['type'] . $extraclass.' ' . $element['class'] . '" id="' . $element['id'] . '" ' . $data . '>';
			$output .= $required;

			return $output;
		}

		/**
		 * Ends the div of the visual group
		 *
		 * @return string					contains the html code generated within the method
		 */
		public function visual_group_end()
		{
			$output  = '</div>';
			return $output;
		}

		/**
		 * Renders a single div element with class hr
		 *
		 * @param array $element		holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string				contains the html code generated within the method
		 */
		public function hr( array $element )
		{
			$class = '';
			if( isset( $element['class'] ) )
			{
				$class = $element['class'];
			}

			$id = isset( $element['id'] ) && ! empty( $element['id'] ) ? 'id="' . esc_attr( $element['id'] ) . '"' : '';

			$output  = '<div ' . $id . ' class="avia_hr ' . $class . '"><div class="avia_inner_hr"></div></div>';
			return $output;
		}

		/**
		 * The import method adds the option to download demo files and import demo content.
		 *
		 * @param array $element		holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string				the html code generated within the method
		 */
		public function import( array $element )
		{
			global $avia_config;

			$demo_full_name = trim( str_replace( 'Import:', '', $element['name'] ) );

			$can_download = true;
			$downloaded = false;
			$extra = '';
			$show_delete = '';
			$data = 'data-demo_full_name="' . esc_attr( $demo_full_name ) . '"';
			$button_class = '';
			$image_url = '';

			$click_to_download = __( 'Click to download', 'avia_framework' );
			$click_to_import = __( 'Click to import', 'avia_framework' );

			/**
			 * Demo developers can store demo files locally. Other users have a 1 click import:
			 *		- Download demo zip file
			 *		- Import the demo
			 *		- Delete unzipped files
			 */
			if( ! current_theme_supports( 'avia_demo_store_downloaded_files' ) )
			{
				$click_to_download = __( 'Click to download and import', 'avia_framework' );;
				$extra .= ' av-demo-immediate-delete';
				$show_delete .= ' av-demo-immediate-delete';
			}

			if( ! empty( $element['demo_name'] ) )
			{
				//	Demo can be downloaded
				$image_url = isset( $element['demo_img'] ) ? $element['demo_img'] : AVIA_IMG_URL . 'misc/placeholder.jpg';

				//	e.g. https://kriesi.at/themes/demo-downloads/download/180/
				$data .= ' data-download="' . trailingslashit( $avia_config['demo_import']['download_manager_url'] . $element['download'] ) . '/' . '"';

				$import = trailingslashit( $avia_config['demo_import']['upload_folders']['main_dir'] . $element['demo_name'] );
				$data .= ' data-import="' . $import . '"';

				$extra .= ' av-import-with-image av-downloadable-zip';

				$downloaded = file_exists( $import . $element['demo_name'] . '.xml' );
				$extra .= ( $downloaded ) ? ' av-demo-downloaded' : ' av-demo-must-download';

				//	In case a demo is already downloaded we show delete button (fallback situation only in 1 click install)
				if( $downloaded )
				{
					$extra = str_replace( 'av-demo-immediate-delete', '', $extra );
					$show_delete = str_replace( 'av-demo-immediate-delete', '', $show_delete );
				}

				$data .= ' data-demo_name="' . $element['demo_name'] . '"';
			}
			else
			{
				//	Demo is shipped with theme
				$can_download = false;
				$extra .= ' av-demo-downloaded av-demo-shipped';

				if( ! empty( $element['files'] ) )
				{
					$data .= " data-files='{$element['files']}'";
				}

				if( ! empty( $element['image'] ) )
				{
					$extra .= ' av-import-with-image';
					$image_url =  trailingslashit( get_template_directory_uri() ) . $element['image'];
				}
			}

			if( isset( $element['exists'] ) && is_array( $element['exists'] ) )
			{
				foreach( $element['exists'] as $class => $message )
				{
					if( ! class_exists( $class, false ) )
					{
						$extra .= ' av-disable-import';
						$click_to_download = $message;
						$click_to_import = $message;
						$button_class .= 'avia_button_inactive';
					}
				}
			}

			$msg_data = ' data-confirm_import="' . esc_attr( sprintf( __( 'Importing demo content %s will overwrite your current Theme Option Settings. It is highly recommended to use a clean installation to import a demo to avoid conflict with existing content and break the import. Proceed anyways?', 'avia_framework' ), $demo_full_name ) ) . '" ';
			$msg_data .= 'data-import_error="' . esc_attr( sprintf( __( 'Import for demo %s didn\'t work! <br/> You might want to try reloading the page and then try again.', 'avia_framework' ), $demo_full_name ) ) . '"';
			$msg_data .= 'data-download_error="' . esc_attr( sprintf( __( 'Download of files for demo %s didn\'t work! <br/> You might want to try reloading the page and then try again.', 'avia_framework' ), $demo_full_name ) ) . '"';
			$msg_data .= 'data-script_error="' . esc_attr( __( '<br/><br/>The script returned the following message: <br/>', 'avia_framework' ) ) . '" ';

			$output = '';
			$output .=	"<div class='av-import-wrap {$extra}' {$msg_data}>";

			$output .=		'<input type="hidden" name="avia-nonce-import" value="' . wp_create_nonce( 'avia_nonce_import_dummy_data' ) . '" />';


			if( empty( $image_url ) )
			{
				$output .=	'<span class="avia_style_wrap">';
				$output .=		'<a href="#" class="avia_button avia_import_button" ' . $data . '>' . __( 'Import dummy data', 'avia_framework' ) . '</a>';
				$output .=	'</span>';
			}
			else
			{
				$output .=	'<a href="#" class="avia_import_image avia_import_button ' . $button_class . '" ' . $data . '>';
				$output .=		'<div class="avia_import_overlay avia_download">' . $click_to_download . '</div>';
				$output .=		'<div class="avia_import_overlay avia_import">' . $click_to_import . '</div>';
				$output .=		'<img src="' . $image_url . '" alt="' . sprintf( __( 'Preview image for: %s', 'avia_framework' ), $element['name'] ) . '" title="" />';
				$output .=	'</a>';
			}

			$output .=		'<span class="avia_loading avia_import_loading"></span>';

			$output .=		'<div class="avia_import_wait import-wait">';
			$output .=			'<strong>' . __( 'Importing...', 'avia_framework' ) . '</strong><br/>';
			$output .=			__( 'Please don\'t reload the page. You will be notified as soon as the import has finished! (Usually within a few minutes) :)', 'avia_framework' );
			$output .=		'</div>';

			$output .=		'<div class="avia_import_wait download-wait">';
			$output .=			'<strong>' . __( 'Downloading...', 'avia_framework' ) . '</strong><br/>';
			$output .=			__( 'Please don\'t reload the page. You will be notified as soon as the download has finished! (Usually within a few minutes) :)', 'avia_framework' );
			$output .=		'</div>';

			$output .=		'<div class="avia_import_wait delete-wait">';
			$output .=			'<strong>' . __( 'Deleting...', 'avia_framework' ) . '</strong><br/>';
			$output .=			__( 'Please don\'t reload the page. You will be notified as soon as deleting the downloaded file has finished! (Usually within a few minutes) :)', 'avia_framework' );
			$output .=		'</div>';

			$output .=		'<div class="avia_import_result"></div>';

			$output .=	'</div>';

			if( $can_download )
			{
				$show_delete .= ( $downloaded ) ? ' av-demo-downloaded' : ' av-demo-must-download';
				$msg_data = ' data-error_msg="' . esc_attr( sprintf( __( 'Deleting the downloaded demo files %s didn\'t work! <br/> You might want to try reloading the page and then try again', 'avia_framework' ), $demo_full_name ) ) . '"';
				$msg_data .= ' data-script_error_msg="' . esc_attr( sprintf( __( 'Deleting the downloaded demo files %s didn\'t work! <br/> You might want to try reloading the page and then try again.<br/> The script returned the following message: <br/>', 'avia_framework' ), $demo_full_name ) ) . '"';

				$output .=	"<div class='av-import-wrap-delete-demo {$show_delete}'>";
				$output .=		'<a href="#" class="avia_button avia_import_delete_demo_button" ' . $data . $msg_data . '>' . __( 'Delete downloaded files', 'avia_framework' ) . '</a>';
				$output .=	'</div>';
			}

			return $output;
		}

		/**
		 * The parent_setting_import method adds the option to import settings from your parent theme
		 *
		 * @param array $element		holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string				contains the html code generated within the method
		 */
		protected function parent_setting_import( array $element )
		{
			$output = '';

			$nonce	 = 	wp_create_nonce ('avia_nonce_import_parent_settings');

			$output .= '<input type="hidden" name="avia-nonce-import-parent" value="' . $nonce . '" />';
			$output .= '<span class="avia_style_wrap"><a href="#" class="avia_button avia_import_parent_button">'  . __( 'Import Parent Theme Settings', 'avia_framework' ) . '</a></span>';
			$output .= '<span class="avia_loading avia_import_loading_parent"></span>';
			$output .= '<div class="avia_import_parent_wait"><strong>'. __( 'Import started.', 'avia_framework' ) . '</strong><br/>' . __( 'Please wait a few seconds and dont reload the page. You will be notified as soon as the import has finished! :)', 'avia_framework' ) . '</div>';
			$output .= '<div class="avia_import_result_parent"></div>';

			return $output;
		}

		/**
		 * The theme_settings_export method adds the option to export the theme settings
		 *
		 * @since ????
		 * @param array $element		holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string				contains the html code generated within the method
		 */
		protected function theme_settings_export( array $element )
		{
			/**
			 * WordFence vulnerability report to limit to admins (check for current_user_can())
			 *
			 * @since x.x.x
			 */
			if( current_user_can( 'manage_options' ) )
			{
				$tag = 'a';
				$href = 'href="' . admin_url( 'admin.php?page=avia&avia_export=1&avia_generate_config_file=1' ) . '"';
				$is_active = '';
			}
			else
			{
				$tag = 'div';
				$href = '';
				$is_active = 'avia_button_inactive';
			}

			if( defined( 'AVIA_GENERATE_DEMO_PHP_FILE' ) && true === AVIA_GENERATE_DEMO_PHP_FILE )
			{
				$button = __( 'Export Demo Settings File', 'avia_framework' );
			}
			else
			{
				$button = __( 'Export Theme Settings File', 'avia_framework' );
			}

			$output  = '';
			$output .= '<span class="avia_style_wrap">';
			$output .=		"<{$tag} {$href} class='avia_button avia_theme_settings_export_button {$is_active}'>{$button}</{$tag}>";
			$output .= '</span>';

			return $output;
		}

		/**
		 * The alb_templates_export method adds the option to export saved ALB templates
		 *
		 * @since 4.6.4
		 * @param array $element
		 * @return string
		 */
		protected function alb_templates_export( array $element )
		{
			if( ! function_exists( 'Avia_Builder' ) || ! Avia_Builder()->is_alb_loaded() )
			{
				return '';
			}

			$names = Avia_Builder()->get_AviaSaveBuilderTemplate( true )->template_names();

			$text  = __( 'Export Layout Builder Templates File', 'avia_framework' );
			$text .= '<br />';
			$text .= sprintf( __( '( %d templates found )', 'avia_framework' ), count( $names ) );

			$url = admin_url( 'admin.php?page=avia&avia_export=1&avia_generate_alb_templates_file=1' );

			$output = '';
			$output .= '<span class="avia_style_wrap"><a href="' . $url . '" class="avia_button avia_alb_templates_export_button">' . $text . '</a></span>';

			return $output;
		}

		/**
		 * Adds a button to allow customized reset of theme settings
		 *
		 * @since 4.6.4
		 * @param array $element
		 * @return string
		 */
		protected function reset_selected_button( $element )
		{
			$data = array();

			$filter_keys = array( 'filter_tabs', 'filter_values', 'skip_tabs', 'skip_values' );
			foreach( $filter_keys as $key )
			{
				if( ! empty( $element[ $key ] ) )
				{
					$data[ $key ] = $element[ $key ];
				}
			}

			$data_string = '';

			foreach( $data as $key => $value )
			{
				$data_string .= " data-$key='$value' ";
			}

			$id = isset( $element['id'] ) ? ' id="' . $element['id'] . '" ' : '';

			$output  = '';
			$output .= '<span class="avia_style_wrap"><a href="#" class="avia_button avia_button_grey avia_reset_selected" ' . $data_string . $id . '>' . __( 'Reset Selected Options', 'avia_framework' ) . '</a></span>';
			$output .= '<span class="avia_loading avia_upload_loading"></span>';

			return $output;
		}

		/**
		 * The heading method renders a fullwidth extra description or title
		 *
		 * @param array $element		holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string				contains the html code generated within the method
		 */
		public function heading( array $element )
		{
			$extraclass = $required = '';
			if( isset( $element['required'] ) && ! empty( $element['required'] ) )
			{
				$required = '<input type="hidden" value="' . $element['required'][0] . '::'.$element['required'][1] . '" class="avia_required" />';
				$extraclass = ' avia_hidden avia_required_container';
			}

			if( isset( $element['class'] ) )
			{
				$extraclass .= ' ' . $element['class'];
			}

			$output  = '<div class="avia_section avia_' . $element['type'] . ' ' . $extraclass . '"  id="avia_' . $element['id'] . '">';
			$output .= $required;

			if( $element['name'] != '' )
			{
				$output .= '<h4>' . $element['name'] . '</h4>';
			}

			$output .=		$element['desc'];

			if( isset( $element['info'] ) || isset( $element['attention'] ) || isset( $element['docu'] ) )
			{
				$dummy = $element;
				$dummy['desc'] = '';

				$output .=	$this->description( $dummy );

				$output .=	'</div>';		//	close avia_control container
			}

			$output .= '</div>';

			return $output;
		}

		/**
		 * Returns an overview of the responsive images grouped by aspect ratio
		 *
		 * @since 4.7.5.1
		 * @param array $element
		 * @return string
		 */
		public function responsive_images_overview( array $element )
		{
			$extraclass = '';
			$required = '';

			if( isset( $element['required'] ) && ! empty( $element['required'] ) )
			{
				$required = '<input type="hidden" value="' . $element['required'][0] . '::' . $element['required'][1] . '" class="avia_required" />';
				$extraclass = ' avia_hidden avia_required_container';
			}

			if( isset( $element['class'] ) )
			{
				$extraclass .= ' ' . $element['class'];
			}

			$output  = '<div class="avia_section avia_' . $element['type'] . ' ' . $extraclass . '"  id="avia_' . $element['id'] . '">';
			$output .= $required;

			if( $element['name'] != '' )
			{
				$output .= '<h4>' . $element['name'] . '</h4>';
			}

			$output .=		'<div class="av-plugin-check-wrap">';
			$output .=			Av_Responsive_Images()->options_page_overview();
			$output .=		'</div>';
			$output .= '</div>';

			return $output;
		}

		/**
		 * The target method renders a div that is able to hold an image or a background color
		 *
		 * @param array $element		holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string				contains the html code generated within the method
		 */
		public function target( array $element )
		{
			$output  = $this->section_start( $element );
			$output .=		'<div><div class="avia_target_inside">';
			$output .=			$element['std'];
			$output .=		'</div>';
			$output .= $this->section_end( $element );

			return $output;
		}

		/**
		 * The plugin_check method checks if a type of plugin is active and displays a suggestion to activate the plugin if not
		 *
		 * @since 4.3 - by Kriesi
		 * @param array $element		holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string				contains the html code generated within the method
		 */
		public function plugin_check( array $element )
		{
			//check if a plugin is active
			$active = array();
			$recommend_count = isset( $element['recommend_count'] ) ? $element['recommend_count'] : 2;

			//store the plugins in an extra unfilterable array so that no one can mess with our recommendations
			$recommend = $element['plugins'];

			/**
			 * filter the plugins. allows plugin authors to add their plugin to the list of checked plugins
			 *
			 * @since 4.3
			 * @param array $element['plugins']
			 * @param string $element['id']
			 * @return array
			 */
			$element['plugins'] = apply_filters( 'avf_plugin_check_plugins', $element['plugins'], $element['id'] );

			foreach( $element['plugins'] as $name => $plugin )
			{
				if( is_plugin_active( $plugin['file'] ) )
				{
		            $active[ $name ] = $element['plugins'][ $name ];
		        }
			}

			$extraclass = '';
			$required = '';

			if( isset( $element['required'] ) && ! empty( $element['required'] ) )
			{
				$required = '<input type="hidden" value="' . $element['required'][0] . '::' . $element['required'][1] . '" class="avia_required" />';
				$extraclass = ' avia_hidden avia_required_container';
			}

			if( isset( $element['class'] ) )
			{
				$extraclass .= ' ' . $element['class'];
			}

			$output  = '<div class="avia_section avia_' . $element['type'].' ' . $extraclass . '"  id="avia_' . $element['id'] . '">';
			$output .= $required;

			if( $element['name'] != '' )
			{
				$output .= '<h4>' . $element['name'] . '</h4>';
			}

			$output .= $element['desc'];

			//no plugin active. lets recommend something
			if( empty( $active ) )
			{
				$output .= '<div class="av-plugin-result-title av-text-notice">';
				$output .=		$element['no_found'];
				$output .= '</div>';

				$iteration = 0;

				foreach( $recommend as $name => $plugin )
				{
					if( $recommend_count < 0 || $recommend_count > $iteration )
					{
						$iteration++;

						$output .= '<div class="av-plugin-check-wrap av-plugin-check-wrap-recommend">';
						$output .=		'<div class="av-plugin-check-wrap-inner">';
						$output .=			'<div class="av-plugin-check-wrap-image">';

						if( ! empty( $plugin['download'] ) )
						{
							$output .=			"<img src='https://ps.w.org/{$plugin['download']}/assets/icon-128x128.png' />";
						}

						$output .=			'</div>';
						$output .=			'<div class="av-plugin-check-wrap-content">';
						$output .=				'<h3>' . $name . '</h3>';
						$output .=			'</div>';
						$output .=		'</div>';

						if( ! empty( $plugin['desc'] ) )
						{
							$output .=	'<div class="av-plugin-check-wrap-desc">';
							$output .=		$plugin['desc'];
							$output .=	'</div>';
						}

						//does not work in thickbox
						//$output .= '<a href="' . esc_url( network_admin_url('plugin-install.php?tab=plugin-information&plugin=' . $plugin['download'] . '&TB_iframe=true&width=600&height=550' ) ) . '" class="thickbox">'.__('Install','avia_framework').'</a>';

						if( $plugin['download'] )
						{
							$action = 'install-plugin';
							$url = wp_nonce_url(
											add_query_arg(
												array(
													'action' => $action,
													'plugin' => $plugin['download'],
												),
												admin_url( 'update.php' ) ),
											$action . '_'.$plugin['download']
									);

							$label = __( 'Install Plugin','avia_framework' );

							if( isset( $plugin['file'] ) && file_exists( trailingslashit( WP_PLUGIN_DIR ) . $plugin['file'] ) )
							{
								$action = 'activate';
								$url = wp_nonce_url(
												add_query_arg(
													array(
														'action' => $action,
														'plugin' => $plugin['file'],
													),
													admin_url( 'plugins.php' ) ),
												'activate-plugin_' . $plugin['file'] );

								$label = __( 'Activate Plugin', 'avia_framework' );
							}


							$target = '';
							if( ! isset( $plugin['target'] ) )
							{
								$target = 'target="_blank"';
							}
							else if( ! empty( $plugin['target'] ) )
							{
								$target = "target='{$plugin['target']}'";
							}

							$output .= '<div class="av-plugin-check-wrap-button">';
							$output .=		avia_targeted_link_rel( '<a class="avia_button avia_button_small" rel="noopener noreferrer" ' . $target . ' href="' . esc_url( $url ) . '">' . $label . '</a>' );
							$output .=		'<a class="avia_button avia_button_small" target="_blank" href="https://wordpress.org/plugins/' . $plugin['download'] . '/" rel="noopener noreferrer">' . __( 'Plugin Details', 'avia_framework' ) . '</a>';
							$output .= '</div>';
						}

						$output .= '</div>';
					}
				}
			}
			else
			{
				$output .= '<div class="av-plugin-result-title av-text-notice">';

				if( count( $active ) > 1 )
				{
					$output .=  $element['too_many'];
				}
				else
				{
					$output .=  $element['found'];
				}

				$output .= '</div>';

				foreach( $active as $name => $plugin )
				{
					$output .= '<div class="av-plugin-check-wrap">';
					$output .=		'<div class="av-plugin-check-wrap-inner">';
					$output .=			'<div class="av-plugin-check-wrap-image">';

					if( $plugin['download'] )
					{
						$output .=			"<img src='https://ps.w.org/{$plugin['download']}/assets/icon-128x128.png' />";
					}

					$output .=			'</div>';
					$output .=			'<div class="av-plugin-check-wrap-content">';
					$output .=				'<h4>' . __( 'Currently active:', 'avia_framework' ) . '</h4>';
					$output .=				$name;
					$output .=			'</div>';
					$output .=		'</div>';

					if( ! empty( $plugin['desc_active'] ) )
					{
						$output .=	'<div class="av-plugin-check-wrap-desc">';
						$output .=		$plugin['desc_active'];
						$output .=	'</div>';
					}

					$output .= '</div>';
				}
			}

			$output .= '</div>';

			return $output;
		}

		/**
		 * The template_builder_element_loader iterates over all template builder elements that can be disabled and lists them
		 *
		 * @since 4.3 - by Kriesi
		 * @since 4.8.2 - added info about usage - by Guenter
		 * @param array $element		the array holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string $output		contains the html code generated within the method
		 */
		protected function template_builder_element_loader( array $element )
		{
			$extraclass = '';
			$required = '';

			if( ! function_exists( 'Avia_Builder' ) || ! Avia_Builder()->is_alb_loaded() )
			{
				return '';
			}

			$usage_info = Avia_Builder()->element_manager()->get_usage_info();

			if( isset( $element['required'] ) && ! empty( $element['required'] ) )
			{
				$required = '<input type="hidden" value="' . $element['required'][0] . '::' . $element['required'][1] . '" class="avia_required" />';
				$extraclass = ' avia_hidden avia_required_container';
			}

			$iteration = 1;
			$checkboxes = '';

			foreach( Avia_Builder()->shortcode_class as $shortcode )
			{
				if( ! empty( $shortcode->config['disabling_allowed'] ) )
				{
					if( 'manually' !== $shortcode->config['disabling_allowed'] )
					{
						$desc = __( 'Check to disable', 'avia_framework' );

						$sc = $shortcode->config['shortcode'];

						$used = ( isset( $usage_info['blog'][ $sc ] ) && true === $usage_info['blog'][ $sc ] );
						if( ! $used )
						{
							if( isset( $usage_info['widgets'][ $sc ] ) && is_array( $usage_info['widgets'][ $sc ] ) )
							{
								$count = 0;
								foreach( $usage_info['widgets'][ $sc ] as $sidebar_count )
								{
									$count += $sidebar_count;
								}

								$used = $count > 0;
							}
						}

						if( $used )
						{
							$desc .= '<span class="avia-sc-element-used">' . __( ' - in use', 'avia_framework' ) . '</span>';
						}
						else
						{
							$desc .= '<span class="avia-sc-element-unused">' . __( ' - unused', 'avia_framework' ) . '</span>';
						}

						$checkbox[ $shortcode->config['name'] ] = array(
												'slug'	=> $element['slug'],			/*needs to inherit the original slug*/
												'name'	=> $shortcode->config['name'],
												'desc'	=> $desc,
												'id'	=> 'av_alb_disable_' . $shortcode->config['shortcode'],
												'type'	=> 'checkbox',
												'std'	=> ''
											);
					}
				}
			}

			//sort all elements
			ksort( $checkbox );

			foreach( $checkbox as $single_checkbox )
			{
				$single_checkbox['class'] = 'av_3col av_col_' . $iteration;

				//iterate over checkbox by name
				$checkboxes .= $this->render_single_element( $single_checkbox );

				$iteration++;
				if( $iteration > 3 )
				{
					$iteration = 1;
				}
			}

			if( isset( $element['class'] ) )
			{
				$extraclass .= ' '.$element['class'];
			}

			$output  = '<div class="avia_section avia_' . $element['type'] . ' ' . $extraclass . '"  id="avia_' . $element['id'] . '">';
			$output .=		$required;
			$output .=		'<div class="avia-sc-element-usage_info av-text-notice">';
			$output .=			'<strong>' . __( 'Important: ', 'avia_framework' ) . ' </strong>';
			$output .=			__( 'Shortcodes that are added with filter or used e.g. in plugins are NOT recognised as &quot;in use&quot;.', 'avia_framework' );
			$output .=		'</div>';
			$output .=		'<div class="avia_section avia_heading  ">';
			$output .=			'<h4>' . __( 'Available Template Builder Elements:', 'avia_framework' ) . '</h4>';
			$output .=		'</div>';
			$output .=		$checkboxes;
			$output .= '</div>';

			return $output;
		}

		/**
		 * Renders the beginning of an option-section wich basically includes some wrapping divs and the elment name
		 *
		 * @param array $element			holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string $output			contains the html code generated within the method
		 */
		public function section_start( array $element )
		{
			$required = $extraclass = $target = '';

			if( isset( $element['required'] ) && ! empty( $element['required'] ) )
			{
				$required = '<input type="hidden" value="' . $element['required'][0] . '::' . $element['required'][1] . '" class="avia_required" />';
				$extraclass = ' avia_hidden avia_required_container';
			}

			if( isset( $element['target'] ) )
			{
				if( is_array( $element['target'] ) )
				{
					foreach( $element['target'] as $value )
					{
						$target .= '<input type="hidden" value="' . $value . '" class="avia_target_value" />';
					}
				}
				else
				{
					$target = '<input type="hidden" value="' . $element['target'] . '" class="avia_target_value" />';
				}

			}
			if( isset( $element['class'] ) )
			{
				$extraclass .= ' ' . $element['class'];
			}

			/**
			 * @used_by				aviaWPML				10
			 * @since 4.8
			 * @param string $element['name']
			 * @param array $element
			 * @return array
			 */
			$name = apply_filters( 'avf_theme_options_element_name', $element['name'], $element );

			$output  = '<div class="avia_section avia_' . $element['type'] . $extraclass . '" id="avia_' . $element['id'] . '">';
			$output .=		$required;
			$output .=		$target;

			if( $name != '' )
			{
				$output .= '<h4>' . $name . '</h4>';
			}

			$output .=		'<div class="avia_control_container">';

			return $output;
		}

		/**
		 * Renders the end of an option-section by closing various divs
		 *
		 * @return string					contains the html code generated within the method
		 */
		public function section_end()
		{
			$output  = '</div>'; // <!--end avia_control-->
			$output .= '<div class="avia_clear"></div>';
			$output .= '</div>'; //<!--end avia_control_container-->
			$output .= '</div>'; //<!--end avia_section-->

			return $output;
		}

		/**
		 * Renders the description of the current option-section
		 *
		 *		'desc'		- description text - shown permanent
		 *		'info'		- info icon, display text on click
		 *		'attention' - attention icon, display text on click
		 *		'docu'		- docu icon, links to docu. Content is  [ 'url' => '....',  'title' => '....' ]
		 *
		 * @since ???
		 * @since x.x.x				modified to support hover popup and multiple icons
		 * @param array $element			holds data like type, value, id, class, description which are necessary to render the whole option-section
		 * @return string $output			contains the html code generated within the method
		 */
		protected function description( array $element )
		{
			static $desc_chars = null;
			static $desc_char_classes = null;
			static $icon = null;
			static $read = null;

			if( is_null( $desc_chars ) )
			{
				$desc_chars = [];
				$desc_char_classes = [];
				$icon = [];
				$read = [];

				$desc_chars['info'] = \avia_font_manager::get_frontend_icon( 'down-circled', 'svg_entypo-fontello', [ 'aria-hidden' => 'true', 'title' => '', 'desc' => '' ] );
				$desc_chars['attention'] = $desc_chars['info'];
				$desc_chars['docu'] = \avia_font_manager::get_frontend_icon( 'docs', 'svg_entypo-fontello', [ 'aria-hidden' => 'true', 'title' => '', 'desc' => '' ] );

				$read['more']['info'] = __( 'More', 'avia_framework' );
				$read['less']['info'] = __( 'Less', 'avia_framework' );
				$read['more']['attention'] = __( 'Important', 'avia_framework' );
				$read['less']['attention'] = __( 'Less', 'avia_framework' );

				/**
				 *
				 * @since x.x.x
				 * @param array $desc_chars
				 * @return array
				 */
				$desc_chars = apply_filters( 'avf_theme_option_desc_chars', $desc_chars );

				/**
				 *
				 * @since x.x.x
				 * @param array $read
				 * @return array
				 */
				$read = apply_filters( 'avf_theme_option_desc_read', $read );


				foreach( $desc_chars as $key => $value )
				{
					$desc_char_classes[ $key ] = \avia_font_manager::get_frontend_icon_classes( $desc_chars[ $key ]['font'], 'string' );

					$class = '';
					$tooltip = '';
					$aria = '';
					$text = '';

					if( $key != 'docu' )
					{
						$class = 'av-show-hide-icon';
						$tooltip = __( 'Click to show/hide infobox', 'avia_framework' );
						$aria = "role='button' tabindex='0'";

						$text .=	"<span class='av-read-more' data-more='{$read['more'][ $key ]}' data-less='{$read['less'][ $key ]}'>";
						$text .=		$read['more'][ $key ];
						$text .=	'</span>';
					}

					$icon[ $key ]  = '';
					$icon[ $key ] .= "<div class='av-description-icon-wrap av-icon-{$key} {$class}' {$aria} title='{$tooltip}' data-popup='av-popup-{$key}'>";
					$icon[ $key ] .=	$text;
					$icon[ $key ] .=	"<span class='avia-svg-{$key} avia-font-entypo-fontello {$desc_char_classes[ $key ]}' {$desc_chars[ $key ]['attr']} >";
					$icon[ $key ] .=		$desc_chars[ $key ]['svg'];
					$icon[ $key ] .=	'</span>';

					$icon[ $key ] .= '</div>';
				}
			}


			$tags = array( 'div', 'div' );

			/**
			 * use class av-animation for animated loading of info box
			 * use class av-no-animation for simple popup of info box
			 */
			$container_class = 'av-icons av-no-animation';

			if( $element['type'] == 'checkbox' )
			{
				$tags = array( 'label for="' . $element['id'] . '"', 'label' );
			}

			/**
			 * @since ???
			 * @deprecated x.x.x
			 * @param string $element['desc']
			 * @param array $element
			 * @return string
			 */
			$element['desc'] = apply_filters_deprecated( 'avf_theme_options_element_desc', [ $element['desc'], $element ], 'x.x.x', 'avf_theme_option_descriptions' );

			/**
			 * Filter description elements of rendered option
			 *
			 * @since x.x.x
			 * @param array $element
			 * @return array
			 */
			$element = apply_filters( 'avf_theme_option_descriptions', $element );


			$output  =	"<{$tags[0]} class='avia_description {$container_class}'>";
			$output .=		$element['desc'];


			$output .=		'<div class="av-container-icons">';
			$output .=			! empty( $element['info'] ) ? $icon['info'] : '';
			$output .=			! empty( $element['attention'] ) ? $icon['attention'] : '';

			if( ! empty( $element['docu'] ) && ! empty( $element['docu']['url'] ) )
			{
				if( empty( $element['docu']['title'] ) )
				{
					$title = __( 'Check our documentation for more info.', 'avia_framework' );
				}
				else
				{
					$title = esc_attr( $element['docu']['title'] );
				}

				$html = $icon['docu'];
				$html = str_replace( '<span', '<a href="' . esc_url( $element['docu']['url'] ) . '" target="_blank" rel="noopener noreferrer" title="' . $title . '" ', $html );
				$html = str_replace( '</span>', '</a>', $html );

				$output .= $html;
			}

			$output .=		'</div>';

			$output .=		'<div class="av-popup-wrap">';

			if( ! empty( $element['info'] ) )
			{
				$output .=			'<div class="av-container-popup av-popup-info">';
				$output .=				$element['info'];
				$output .=			'</div>';
			}

			if( ! empty( $element['attention'] ) )
			{
				$output .=			'<div class="av-container-popup av-popup-attention">';
				$output .=				$element['attention'];
				$output .=			'</div>';
			}

			$output .=		'</div>';
			$output .=	"</{$tags[1]}>"; // <!--end avia_description-->

			$output .=	'<div class="avia_control">';

			return $output;
		}

		/**
		 * Renders the beginning of the option page, with header area, logo and various other informations
		 *
		 * @return string					contains the html code generated within the method
		 */
		public function page_header()
		{
			$the_title = apply_filters( 'avia_filter_backend_page_title', $this->avia_superobject->base_data['Title'] );
			$class = current_theme_supports( 'avia_option_pages_toggles' ) ? 'av-use-toggles' : 'av-use-checkbox';

			$output  = '<form id="avia_options_page" action="#" method="post" class="' . $class . '">';
			$output .= '	<div class="avia_options_page_inner avia_sidebar_active">';
			$output .= '	<div class="avia_options_page_sidebar"><div class="avia_header">';
			$output .=      apply_filters('avia_options_page_header', '');
			$output .= '	</div><div class="avia_sidebar_content"></div></div>';
			$output .= '		<div class="avia_options_page_content">';
			$output .= '			<div class="avia_header">';
			$output .= '			<h2 class="avia_logo">' . $the_title . ' ' . $this->avia_superobject->currentpage . '</h2>';
			$output .= '				<ul class="avia_help_links">';
			$output .= '					<li><a class="thickbox" onclick="return false;" href="http://docs.kriesi.at/' . avia_backend_safe_string( $this->avia_superobject->base_data['prefix'] ) . '/changelog/index.php?TB_iframe=1">Changelog</a> |</li>';
			$output .= '					<li><a target="_blank" href="http://docs.kriesi.at/' . avia_backend_safe_string( $this->avia_superobject->base_data['prefix'] ) . '/documentation/" rel="noopener noreferrer">Docs</a></li>';
			$output .= '				</ul>';
			$output .= '				<a class="avia_shop_option_link" href="#">Show all Options [+]</a>';
			$output .= '				<span class="avia_loading"></span>';
			$output .= 					$this->save_button();
			$output .= '			</div>';
			$output .= '			<div class="avia_options_container">';

			return $output;
		}

		/**
		 * The page_footer method renders the end of the option page by closing various divs and appending a save and a reset button
		 *
		 * @since ????
		 * @since 4.8							added $show_reset_button
		 * @param boolean $show_reset_button
		 * @return string						returnes the html code generated within the method
		 */
		public function page_footer( $show_reset_button = true )
		{
			$output  = '			</div>'; // <!-- end .avia_options_container -->
			$output .= '			<div class="avia_footer">';
			$output .=  			$this->hidden_data();
			$output .= '			<span class="avia_loading"></span>';
			$output .= '				<ul class="avia_footer_links">';

			if( $show_reset_button === true )
			{
				$output .= '				<li class="avia_footer_reset">' . $this->reset_button() . '</li>';
			}

			$output .= '					<li class="avia_footer_save">' . $this->save_button() . '</li>';
			$output .= '				</ul>';
			$output .= '			</div>';
			$output .= '		</div>'; // <!--end avia_options_page_content-->
			$output .= '		<div class="avia_clear"></div>';
			$output .= '	</div>'; //<!--end avia_options_page_inner-->
			$output .= '</form>'; // <!-- end #avia_options_page -->
			$output .= '<div class="avia_bottom_shadow"></div>';


			return $output;
		}

		/**
		 * Creates a button to save the form via ajax
		 *
		 * @return string					contains the html code generated within the method
		 */
		public function save_button()
		{
			$output = '<span class="avia_style_wrap"><a href="#" class="avia_button avia_button_inactive avia_submit">' . __( 'Save all changes', 'avia_framework' ) . '</a></span>';
			return $output;
		}

		/**
		 * Creates a button to reset the form
		 *
		 * @return string				contains the html code generated within the method
		 */
		public function reset_button()
		{
			if( current_theme_supports( 'avia_disable_reset_options' ) )
			{
				return '';
			}

			$output = '<span class="avia_style_wrap"><a href="#" class="avia_button avia_button_grey avia_reset">' . __( 'Reset all options', 'avia_framework' ) . '</a></span>';
			return $output;
		}

		/**
		 * An important function that sets various necessary parameters within hidden input elements that the ajax script needs to save the current page
		 *
		 * @return string					contains the html code generated within the method
		 */
		public function hidden_data()
		{
			$options = get_option( $this->avia_superobject->option_prefix );

			$nonce_reset = wp_create_nonce ('avia_nonce_reset_backend');

			$output  = '<div id="avia_hidden_data" class="avia_hidden">';
			$output .=		wp_referer_field( false );
			$output .=		'<input type="hidden" name="avia-nonce-reset" value="' . $nonce_reset . '" />';
			$output .=		'<input type="hidden" name="resetaction" value="avia_ajax_reset_options_page" />';
			$output .=		'<input type="hidden" name="admin_ajax_url" value="' . admin_url( 'admin-ajax.php' ) . '" />';
			$output .=		'<input type="hidden" name="avia_options_prefix" value="' . $this->avia_superobject->option_prefix . '" />';

			//if we are viewing a page and not a meta box
			if( $this->context == 'options_page' )
			{
				$nonce	= wp_create_nonce ('avia_nonce_save_backend');

				$output .=		'<input type="hidden" name="avia-nonce" value="' . $nonce . '" />';
				$output .=		'<input type="hidden" name="action" value="avia_ajax_save_options_page" />';
				$output .=		'<input type="hidden" name="avia_options_page_slug" value="' . $this->avia_superobject->page_slug . '" />';
				if( empty( $options ) )
				{
					$output .=	'<input type="hidden" name="avia_options_first_call" value="true" />';
				}
			}
			//if the code was rendered for a meta box
			if( $this->context == 'metabox' )
			{
				$nonce	= wp_create_nonce ('avia_nonce_save_metabox');

				$output .=		'<input type="hidden" name="avia-nonce" value="' . $nonce . '" />';
				$output .=		'<input type="hidden" name="meta_active" value="true" />';
			}

			$output .= '</div>';

			return $output;
		}

		/**
		 * Scans array of attributes and returns a concatenated string. Value of attributes can also be an array.
		 * In this case values joined by ' '.
		 *
		 * @since 4.7.4.1
		 * @param array $attributes
		 * @param string $prepend
		 * @return string
		 */
		protected function attributes_from_array( array $attributes, $prepend = ' ' )
		{
			$attr = '';

			if( empty( $attributes ) )
			{
				return $attr;
			}

			foreach ( $attributes as $key => $value )
			{
				$val = is_array( $value ) ? implode( ' ', $value ) : $value;

				$atts[] = esc_attr( $key ) . '="' . esc_attr( $val ) . '"';
			}

			return $prepend . implode( ' ', $atts );
		}

		/**
		 * Merges $array2 into $array1.
		 *
		 * array_merge_recursive_distinct does not change the datatypes of the values in the arrays.
		 * Matching keys' values in the second array overwrite those in the first array, as is the
		 * case with array_merge
		 *
		 * Parameters are passed by reference, though only for performance reasons. They're not
		 * altered by this function.
		 *
		 * @since 4.7.4.1
		 * @param array $array1
		 * @param array $array2
		 * @return array
		 */
		protected function array_merge_recursive_distinct ( array &$array1, array &$array2 )
		{
			$merged = $array1;

			foreach ( $array2 as $key => $value )
			{
				if ( is_array ( $value ) && isset ( $merged[ $key ] ) && is_array ( $merged[ $key ] ) )
				{
					$merged[ $key ] = self::array_merge_recursive_distinct ( $merged[ $key ], $value );
				}
							//	if null -> leave default
				else if ( isset ( $merged[ $key ] ) && is_array ( $merged[ $key ] ) && is_null( $value ) )
				{
					continue;
				}
				else
				{
					$merged [$key] = $value;
				}
			}

			return $merged;
		}

		######################################################################
		# STYLING WIZARD + HELPER FUNCTIONS
		######################################################################

		/**
		 *
		 * @param array $element
		 * @return string
		 */
		protected function styling_wizard( array $element )
		{
			$output 	= '';
			$select  	= '<select class="add_wizard_el">';
			$fake_val	= __( 'Select an element to customize', 'avia_framework' );
			$iteration  = 0;

			$output  = '<span class="avia_style_wrap avia_select_style_wrap"><span class="avia_select_unify">';
			$select .= "<option value=''>{$fake_val}</option>";

			//dropdown menu with elements
			foreach( $element['order'] as $order )
			{
				$select .= "<optgroup label='{$order}'>";

				foreach( $element['elements'] as $sub )
				{
					if( $sub['group'] == $order )
					{
						$select .= "<option value='{$sub['id']}'>{$sub['name']}</option>";
					}
				}

				$select .= '</optgroup>';
			}

			$select .= '</select>';
			$select .= '<span class="avia_select_fake_val">' . $fake_val . '</span>';
			$select .= '</span><a href="#" class="avia_button add_wizard_el_button" >' . __( 'Edit Element', 'avia_framework' ) . '</a></span>';


			$output .= $select;
			$output .= '<div class="av-wizard-element-container">';

			//show active items
			if( is_array( $element['std'] ) )
			{
				foreach( $element['std'] as $key => $value )
				{
					if( empty( $element['elements'][ $value['id'] ] ) )
					{
						continue;
					}

					$sub = $element['elements'][ $value['id'] ];
					$sub['std_a'] = $value;
					$sub['iteration'] = $key;
					$sub['master_id'] = $element['id'];

					$output .= $this->styling_wizard_el( $sub );
					$iteration ++;
				}
			}

			//generate the templates for new items
			$template = '';
			foreach( $element['elements'] as $sub )
			{
				$sub['iteration']	= '{counter}';
				$sub['master_id']	= $element['id'];

				$template .= "\n<script type='text/html' id='avia-tmpl-wizard-{$sub['id']}'>\n";
				$template .=	$this->styling_wizard_el( $sub );
				$template .= "\n</script>\n\n";

			}
			$output .= $template;

			$output .= '</div>';

			return $output;
		}

		/**
		 *
		 * @param array $element
		 * @return string
		 */
		protected function styling_wizard_el( array $element )
		{
			extract( $element );

			$extraClass = ( $sections || $hover ) ? 'av-wizard-with-extra' : '';
			$name_string = $master_id . '-__-' . $iteration . '-__-';
			$blank_string = $master_id . '-__-{counter}-__-';

			$output  = '';
			$output .= "<div class='av-wizard-element {$extraClass}'>";
			$output .= 		"<strong>{$name}</strong>";

			if( $description )
			{
				$output .= 		"<span class='av-wizard-description'> - {$description}</span>";
			}

			$output .= 		'<div class="av-wizard-form-elements">';
			$output .= 		"<input name='" . $name_string . "id' value='" . $element['id'] . "' type='hidden' data-recalc='" . $blank_string . "id' />";

			foreach( $edit as $key => $form )
			{
				$method = 'styling_wizard_' . $form['type'];

				if( method_exists( $this, $method ) )
				{
					$element['html_name']  = $name_string . $key;
					$element['data_tmpl']  = $blank_string . $key;
					$element['sub_values'] = $form;
					$element['std'] = isset( $element['std_a'][ $key ] ) ? $element['std_a'][ $key ] : '';

					$output .= "<div class='av-wizard-subcontainer av-wizard-subcontainer-" . $element['sub_values']['type'] . "'>";
					$output .=		$this->$method( $element );
					$output .= '</div>';
				}
			}

			if( $extraClass )
			{
				$output .= "<span class='av-wizard-delimiter'></span>";
			}

			if( $sections )
			{
				global $avia_config;

				$output .= "<div class='av-wizard-subcontainer av-wizard-subcontainer-checkbox av-wizard-subcontainer-bottom-box'>";
				$output .= "<span class='av-wizard-checkbox-label-section'>" . __( 'Apply to Section: ', 'avia_framework' ) . '</span>';

				foreach( $avia_config['color_sets'] as $key => $name )
				{
					$element['name']  		= $name;
					$element['html_name']  	= $name_string.$key;
					$element['data_tmpl']  	= $blank_string.$key;
					$element['std'] 		= isset( $element['std_a'][ $key ] ) ? $element['std_a'][ $key ] : 'true';

					$output .= $this->styling_wizard_checkbox( $element );
				}

				$output .= '</div>';
			}

			if( $hover )
			{
				$key 					= 'hover_active';
				$element['name']  		= __( 'Apply only to mouse hover state', 'avia_framework' );
				$element['html_name']  	= $name_string.$key;
				$element['data_tmpl']  	= $blank_string.$key;
				$element['std'] 		= isset( $element['std_a'][ $key ] ) ? $element['std_a'][ $key ] : '';

				$output .= "<div class='av-wizard-subcontainer av-wizard-subcontainer-checkbox av-wizard-subcontainer-bottom-box'>";
				$output .=		$this->styling_wizard_checkbox( $element );
				$output .= '</div>';
			}

			if( isset( $active ) && $active )
			{
				$key 					= 'item_active';
				$element['name']  		= __('Apply only to active state','avia_framework');
				$element['html_name']  	= $name_string.$key;
				$element['data_tmpl']  	= $blank_string.$key;
				$element['std'] 		= isset( $element['std_a'][ $key ] ) ? $element['std_a'][ $key ] : '';

				$output .= "<div class='av-wizard-subcontainer av-wizard-subcontainer-checkbox av-wizard-subcontainer-bottom-box'>";
				$output .=		$this->styling_wizard_checkbox( $element );
				$output .= '</div>';
			}

			$output .= 		'<a class="avia_remove_wizard_set" href="#">×</a>';
			$output .= 		'</div>';
			$output .= '</div>';

			return $output;
		}

		/**
		 *
		 * @param array $element
		 * @return string
		 */
		protected function styling_wizard_hr( array $element )
		{
			$output  = '';
			$output .= '<div class="av-wizard-hr"></div>';

			return $output;
		}

		/**
		 *
		 * @param array $element
		 * @return string
		 */
		protected function styling_wizard_checkbox( array $element )
		{
			extract( $element );

			$checked = ( $std != '' && $std != 'disabled' ) ? 'checked="checked"' : '';

			$output  = '';
			$output .= "<label><input type='checkbox' class='avia_color_picker' value='true' {$checked} name='{$html_name}' data-recalc='{$data_tmpl}' /> <span class='av-wizard-checkbox-label'>{$name}</span></label>";

			return $output;
		}

		/**
		 *
		 * @param array $element
		 * @return string
		 */
		protected function styling_wizard_colorpicker( array $element )
		{
			extract( $element );

			$output  = '';
			$output .= "<span class='avia_style_wrap avia_colorpicker avia_colorpicker_style_wrap'>";
			$output .= "<input type='text' class='avia_color_picker' value='{$std}' name='{$html_name}' data-recalc='{$data_tmpl}' />";
			$output .= "<span class='avia_color_picker_div'></span></span>";
			$output .= "<div class='subname'>{$sub_values['name']}</div>";

			return $output;
		}

		/**
		 *
		 * @param array $element
		 * @return string
		 */
		protected function styling_wizard_size( array $element )
		{
			$range 		= is_array( $element['sub_values']['range'] ) ? $element['sub_values']['range'] : explode( '-', $element['sub_values']['range'] );
			$unit 		= ! isset( $element['sub_values']['unit'] ) ? 'px' : $element['sub_values']['unit'];
			$increment 	= ! isset( $element['sub_values']['increment'] ) ? 1 : $element['sub_values']['increment'];

			$element['sub_values']['options'] = array();
			$element['sub_values']['options']['Default'] = '';

			for( $i = $range[0]; $i <= $range[1]; $i += $increment )
			{
				$element['sub_values']['options'][ $i . $unit ] = $i . $unit;
			}

			return $this->styling_wizard_select( $element );
		}

		/**
		 *
		 * @param array $element
		 * @return string
		 */
		protected function styling_wizard_font( array $element )
		{
			return $this->styling_wizard_select( $element );
		}

		/**
		 * Displays a select box and supports optgroup tag
		 *
		 * @param array $element
		 * @return string
		 */
		protected function styling_wizard_select( array $element )
		{
			extract( $element );

			$output  = '';
			$output .= "<span class='avia_style_wrap avia_select_style_wrap'><span class='avia_select_unify'><select name='{$html_name}' data-recalc='{$data_tmpl}'>";

			foreach( $sub_values['options'] as $key => $option )
			{
				$is_optgroup = is_array( $option );
				$optgroup_sub = $is_optgroup ? $option : array( $key => $option );

				if( $is_optgroup )
				{
					$output .= '<optgroup label="' . $key . '">';
				}

				foreach( $optgroup_sub as $show => $value )
				{
					$selected = $value == $std ? 'selected="selected"' : '';
					$output .= "<option {$selected} value='{$value}'>{$show}</option>";
				}

				if( $is_optgroup )
				{
					$output .= '</optgroup>';
				}
			}

			$output .= "</select><span class='avia_select_fake_val'>Default</span></span></span>";
			$output .= "<div class='subname'>{$sub_values['name']}</div>";

			return $output;
		}

	}
}
