<?php
/**
 * Masonry
 *
 * Shortcode that allows to display a fullwidth masonry/grid with blog entries
 */
if( ! defined( 'ABSPATH' ) ) {  exit;  }    // Exit if accessed directly


if( ! class_exists( 'avia_sc_masonry_entries', false ) )
{
	class avia_sc_masonry_entries extends aviaShortcodeTemplate
	{
		/**
		 * @since 4.5.7.2
		 * @var int
		 */
		static protected $masonry_count = 0;

		/**
		 * Save avia_masonry objects for reuse. As we need to access the same object when creating the post css file in header,
		 * create the styles and HTML creation. Makes sure to get the same id.
		 *
		 *			$element_id	=> avia_masonry
		 *
		 * @since 4.8.4
		 * @var array
		 */
		protected $obj_masonry;

		/**
		 * @since 4.8.9
		 * @param AviaBuilder $builder
		 */
		public function __construct( AviaBuilder $builder )
		{
			parent::__construct( $builder );

			$this->obj_masonry = array();
		}

		/**
		 * @since 4.8.9
		 */
		public function __destruct()
		{
			unset( $this->obj_masonry );

			parent::__destruct();
		}

		/**
		 * Create the config array for the shortcode button
		 */
		protected function shortcode_insert_button()
		{
			$this->config['version']		= '1.0';
			$this->config['is_fullwidth']	= 'yes';

			/**
			 * inconsistent behaviour up to 4.2: a new element was created with a close tag, after editing it was self closing !!!
			 * @since 4.2.1: We make new element self closing now because no id='content' exists.
			 */
			$this->config['self_closing']	= 'yes';
			$this->config['base_element']	= 'yes';

			$this->config['name']			= __( 'Masonry', 'avia_framework' );
			$this->config['tab']			= __( 'Content Elements', 'avia_framework' );
			$this->config['icon']			= AviaBuilder::$path['imagesURL'] . 'sc-masonry.png';
			$this->config['order']			= 38;
			$this->config['target']			= 'avia-target-insert';
			$this->config['shortcode'] 		= 'av_masonry_entries';
			$this->config['tooltip'] 	    = __( 'Display a fullwidth masonry/grid with blog entries', 'avia_framework' );
			$this->config['drag-level'] 	= 3;
			$this->config['preview'] 		= false;
			$this->config['disabling_allowed'] = true;
			$this->config['id_name']		= 'id';
			$this->config['id_show']		= 'always';
			$this->config['alb_desc_id']	= 'alb_description';
		}

		/**
		 *
		 */
		protected function admin_assets()
		{
			add_action( 'wp_ajax_avia_ajax_masonry_more', array( 'avia_masonry', 'handler_ajax_load_more' ) );
			add_action( 'wp_ajax_nopriv_avia_ajax_masonry_more', array( 'avia_masonry', 'handler_ajax_load_more' ) );
		}

		/**
		 *
		 */
		protected function extra_assets()
		{
			$ver = Avia_Builder()->get_theme_version();
			$min_js = avia_minify_extension( 'js' );
			$min_css = avia_minify_extension( 'css' );

			wp_enqueue_style( 'avia-module-masonry', AviaBuilder::$path['pluginUrlRoot'] . "avia-shortcodes/masonry_entries/masonry_entries{$min_css}.css", array( 'avia-layout' ), $ver );

			//loading icon
			wp_enqueue_style( 'avia-siteloader', get_template_directory_uri() . "/css/avia-snippet-site-preloader{$min_css}.css", array( 'avia-layout' ), $ver );


			wp_enqueue_script( 'avia-module-isotope', AviaBuilder::$path['pluginUrlRoot'] . "avia-shortcodes/portfolio/isotope.min.js", array( 'avia-shortcodes' ), $ver , true );
			wp_enqueue_script( 'avia-module-masonry', AviaBuilder::$path['pluginUrlRoot'] . "avia-shortcodes/masonry_entries/masonry_entries{$min_js}.js", array( 'avia-module-isotope' ), $ver, true );

			//start sessions - only necessary for correct breadcrumb nav on single portfolio pages
			if( ! is_admin() && ! current_theme_supports( 'avia_no_session_support' ) && ! session_id() )
			{
				session_start();
			}
		}

		/**
		 * Popup Elements
		 *
		 * If this function is defined in a child class the element automatically gets an edit button, that, when pressed
		 * opens a modal window that allows to edit the element properties
		 *
		 * @return void
		 */
		protected function popup_elements()
		{

			$this->elements = array(

				array(
						'type' 	=> 'tab_container',
						'nodescription' => true
					),

				array(
						'type' 	=> 'tab',
						'name'  => __( 'Content', 'avia_framework' ),
						'nodescription' => true
					),

					array(
							'type'			=> 'template',
							'template_id'	=> 'toggle_container',
							'templates_include'	=> array(
													$this->popup_key( 'content_entries' ),
													$this->popup_key( 'content_filter' ),
													$this->popup_key( 'content_sorting' ),
													$this->popup_key( 'content_captions' ),
													$this->popup_key( 'content_copyright' )
												),
							'nodescription' => true
						),

				array(
						'type' 	=> 'tab_close',
						'nodescription' => true
					),

				array(
						'type' 	=> 'tab',
						'name'  => __( 'Styling', 'avia_framework' ),
						'nodescription' => true
					),

					array(
							'type'			=> 'template',
							'template_id'	=> 'toggle_container',
							'templates_include'	=> array(
													$this->popup_key( 'styling_masonry' ),
													$this->popup_key( 'styling_columns' ),
													$this->popup_key( 'styling_pagination' ),
													$this->popup_key( 'styling_colors' ),
													$this->popup_key( 'styling_copyright' )
												),
							'nodescription' => true
						),

				array(
						'type' 	=> 'tab_close',
						'nodescription' => true
					),

				array(
						'type' 	=> 'tab',
						'name'  => __( 'Advanced', 'avia_framework' ),
						'nodescription' => true
					),

					array(
							'type' 	=> 'toggle_container',
							'nodescription' => true
						),

						array(
								'type'			=> 'template',
								'template_id'	=> $this->popup_key( 'advanced_animation' )
							),

						array(
								'type'			=> 'template',
								'template_id'	=> 'lazy_loading_toggle',
								'lockable'		=> true
							),

						array(
								'type'			=> 'template',
								'template_id'	=> 'screen_options_toggle',
								'lockable'		=> true
							),

						array(
								'type'			=> 'template',
								'template_id'	=> 'developer_options_toggle',
								'args'			=> array( 'sc' => $this )
							),

					array(
							'type' 	=> 'toggle_container_close',
							'nodescription' => true
						),

				array(
						'type' 	=> 'tab_close',
						'nodescription' => true
					),

				array(
						'type'			=> 'template',
						'template_id'	=> 'element_template_selection_tab',
						'args'			=> array( 'sc' => $this )
					),

				array(
						'type' 	=> 'tab_container_close',
						'nodescription' => true
					)

				);

		}

		/**
		 * Create and register templates for easier maintainance
		 *
		 * @since 4.6.4
		 */
		protected function register_dynamic_templates()
		{

			/**
			 * Content Tab
			 * ===========
			 */

			$c = array(
						array(
							'name'		=> __( 'Which Entries Should Be Used', 'avia_framework' ),
							'desc'		=> __( 'Select which entries should be displayed by selecting a taxonomy', 'avia_framework' ),
							'id'		=> 'link',
							'type'		=> 'linkpicker',
							'multiple'	=> 6,
							'fetchTMPL'	=> true,
							'std'		=> 'category',
							'lockable'	=> true,
							'subtype'	=> array( __( 'Display Entries from:', 'avia_framework' ) => 'taxonomy' )
						),

				);

			if( current_theme_supports( 'add_avia_builder_post_type_option' ) )
			{
				$element = array(
								'type'			=> 'template',
								'template_id'	=> 'avia_builder_post_type_option',
								'lockable'		=> true
							);

				array_unshift( $c, $element );
			}

			$c[] = array(
							'name'		=> __( 'Multiple Categories/Terms Relation', 'avia_framework' ),
							'desc'		=> __( 'Select to use an OR or AND relation. In AND an entry must be in all selected categories/terms to be displayed. Defaults to OR', 'avia_framework' ),
							'id'		=> 'term_rel',
							'type'		=> 'select',
							'std'		=> '',
							'lockable'	=> true,
							'subtype'	=> array(
												__( 'OR', 'avia_framework' )	=> '',
												__( 'AND', 'avia_framework' )	=> 'AND'
											)
						);


			$template = array(
							array(
								'type'			=> 'template',
								'template_id'	=> 'toggle',
								'title'			=> __( 'Select Entries', 'avia_framework' ),
								'content'		=> $c
							),
					);

			AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'content_entries' ), $template );

			$c = array(
						array(
							'type'			=> 'template',
							'template_id' 	=> 'wc_options_non_products',
							'lockable'		=> true
						),

						array(
							'type'			=> 'template',
							'template_id' 	=> 'date_query',
							'lockable'		=> true,
							'period'		=> true
						),

						array(
							'type'			=> 'template',
							'template_id' 	=> 'page_element_filter',
							'lockable'		=> true
						)

				);

			$template = array(
							array(
								'type'			=> 'template',
								'template_id'	=> 'toggle',
								'title'			=> __( 'Filter', 'avia_framework' ),
								'content'		=> $c
							),
					);

			AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'content_filter' ), $template );

			$c = array(
						array(
							'name'		=> __( 'Sortable?', 'avia_framework' ),
							'desc'		=> __( 'Should sorting options based on the taxonomies above be displayed?', 'avia_framework' ),
							'id'		=> 'sort',
							'type'		=> 'select',
							'std'		=> 'yes',
							'lockable'	=> true,
							'subtype'	=> array(
												__( 'Yes, display sort options', 'avia_framework' )			=> 'yes',
												__( 'Yes, display sort options and currently active taxonomy', 'avia_framework' )	=> 'yes-tax',
												__( 'No, do not display sort options', 'avia_framework' )	=> 'no'
											)
						),

						array(
							'name'		=> __( 'Order by', 'avia_framework' ),
							'desc'		=> __( 'You can order the result by various attributes like creation date, title, author etc', 'avia_framework' ),
							'id'		=> 'query_orderby',
							'type'		=> 'select',
							'std'		=> 'date',
							'lockable'	=> true,
							'required'	=> array( 'link', 'parent_not_in_array', implode( ',', get_object_taxonomies( 'product', 'names' ) ) ),
							'subtype'	=> array(
												__( 'Date', 'avia_framework' )				=> 'date',
												__( 'Title', 'avia_framework' )				=> 'title',
												__( 'Random', 'avia_framework' )			=> 'rand',
												__( 'Author', 'avia_framework' )			=> 'author',
												__( 'Name (Post Slug)', 'avia_framework' )	=> 'name',
												__( 'Last modified', 'avia_framework' )		=> 'modified',
												__( 'Comment Count', 'avia_framework' )		=> 'comment_count',
												__( 'Page Order', 'avia_framework' )		=> 'menu_order'
											)
						),

						array(
							'name'		=> __( 'Display order', 'avia_framework' ),
							'desc'		=> __( 'Display the results either in ascending or descending order', 'avia_framework' ),
							'id'		=> 'query_order',
							'type'		=> 'select',
							'std'		=> 'DESC',
							'lockable'	=> true,
							'required'	=> array( 'link', 'parent_not_in_array', implode( ',', get_object_taxonomies( 'product', 'names' ) ) ),
							'subtype'	=> array(
												__( 'Ascending Order',  'avia_framework' )	=> 'ASC',
												__( 'Descending Order',  'avia_framework' )	=> 'DESC'
											)
						)

				);

			$template = array(
							array(
								'type'			=> 'template',
								'template_id'	=> 'toggle',
								'title'			=> __( 'Sorting', 'avia_framework' ),
								'content'		=> $c
							)
					);

			AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'content_sorting' ), $template );


			$c = array(
						array(
								'type'			=> 'template',
								'template_id'	=> 'masonry_captions',
								'lockable'		=> true
						)

					);

			$template = array(
							array(
								'type'			=> 'template',
								'template_id'	=> 'toggle',
								'title'			=> __( 'Captions', 'avia_framework' ),
								'content'		=> $c
							)
					);

			AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'content_captions' ), $template );

			$desc  = __( 'Select to show the image copyright info added to the media library.', 'avia_framework' ) . ' ';
			$desc .= __( 'Due to layout restrictions &quot;Caption at bottom of image&quot; might hide this info. Please check the frontend.', 'avia_framework' );

			$c = array(
						array(
								'type'			=> 'template',
								'template_id'	=> 'image_copyright_toggle',
								'desc'			=> $desc,
								'lockable'		=> true
						)

				);

			AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'content_copyright' ), $c );

			/**
			 * Styling Tab
			 * ===========
			 */

			$c = array(

						array(
							'name'		=> __( 'Size Settings', 'avia_framework' ),
							'desc'		=> __( 'Here you can select how the masonry should behave and handle all entries and the feature images of those entries', 'avia_framework' ),
							'id'		=> 'size',
							'type'		=> 'radio',
							'std'		=> 'fixed masonry',
							'lockable'	=> true,
							'options'	=> array(
												'flex'				=> __( 'Flexible Masonry: All entries get the same width but Images of each entry are displayed with their original height and width ratio', 'avia_framework' ),
												'fixed'				=> __( 'Perfect Grid: Display a perfect grid where each element has exactly the same size. Images get cropped/stretched if they don\'t fit', 'avia_framework' ),
												'fixed masonry'		=> __( 'Perfect Automatic Masonry: Display a grid where most elements get the same size, only elements with very wide images get twice the width and elements with very high images get twice the height. To qualify for "very wide" or "very high" the image must have a aspect ratio of 16:9 or higher', 'avia_framework' ),
												'fixed manually'	=> __( 'Perfect Manual Masonry: Manually control the height and width of entries by adding either a "landscape" or "portrait" tag when creating the entry. Elements with no such tag use a fixed default size, elements with both tags will display extra large', 'avia_framework' )
											)
						),

						array(
							'name'		=> __( 'Orientation', 'avia_framework' ),
							'desc'		=> __( 'Set the orientation of the cropped preview images', 'avia_framework' ),
							'id'		=> 'orientation',
							'type'		=> 'select',
							'std'		=> '',
							'lockable'	=> true,
							'required'	=> array( 'size', 'equals', 'fixed' ),
							'subtype'	=> array(
												__( 'Wide Landscape', 'avia_framework' )	=> 'av-orientation-landscape-large',
												__( 'Landscape', 'avia_framework' )			=> '',
												__( 'Square', 'avia_framework' )			=> 'av-orientation-square',
												__( 'Portrait', 'avia_framework' )			=> 'av-orientation-portrait',
												__( 'High Portrait', 'avia_framework' )		=> 'av-orientation-portrait-large'
											)
						),

						array(
							'type'			=> 'template',
							'template_id'	=> 'image_size_select',
							'std'			=> 'masonry',
							'lockable'		=> true,
							'multi'			=> true
						),

						array(
							'name'		=> __( 'Gap between elements', 'avia_framework' ),
							'desc'		=> __( 'Select the gap between the elements', 'avia_framework' ),
							'id'		=> 'gap',
							'type'		=> 'select',
							'std'		=> '1px',
							'lockable'	=> true,
							'subtype'	=> array(
												__( 'No Gap', 'avia_framework' )		=> 'no',
												__( '1 Pixel Gap', 'avia_framework' )	=> '1px',
												__( 'Large Gap', 'avia_framework' )		=> 'large',
											)
						)

				);

			$template = array(
							array(
								'type'			=> 'template',
								'template_id'	=> 'toggle',
								'title'			=> __( 'Masonry Settings', 'avia_framework' ),
								'content'		=> $c
							)
					);

			AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'styling_masonry' ), $template );

			$c = array(

						array(
								'type'			=> 'template',
								'template_id'	=> 'columns_count_icon_switcher',
								'lockable'		=> true
							)

				);

			$template = array(
							array(
								'type'			=> 'template',
								'template_id'	=> 'toggle',
								'title'			=> __( 'Columns', 'avia_framework' ),
								'content'		=> $c
							)
					);

			AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'styling_columns' ), $template );

			$c = array(

						array(
							'name'		=> __( 'Post Number', 'avia_framework' ),
							'desc'		=> __( 'How many items should be displayed per page?', 'avia_framework' ),
							'id'		=> 'items',
							'type'		=> 'select',
							'std'		=> '12',
							'lockable'	=> true,
							'subtype'	=> AviaHtmlHelper::number_array( 1, 100, 1, array( 'All' => '-1' ) )
						),

						array(
							'name'		=> __( 'Pagination', 'avia_framework' ),
							'desc'		=> __( 'Should a pagination or load more option be displayed to view additional images?', 'avia_framework' ),
							'id'		=> 'paginate',
							'type'		=> 'select',
							'std'		=> 'none',
							'lockable'	=> true,
							'required'	=> array( 'items', 'not', '-1' ),
							'subtype'	=> array(
												__( 'Display Pagination', 'avia_framework' )					=> 'pagination',
												__( 'Display "Load More" Button', 'avia_framework' )			=> 'load_more',
												__( 'No option to view additional images', 'avia_framework' )	=> 'none'
											)
						)

				);

			$template = array(
							array(
								'type'			=> 'template',
								'template_id'	=> 'toggle',
								'title'			=> __( 'Pagination', 'avia_framework' ),
								'content'		=> $c
							),
					);

			AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'styling_pagination' ), $template );

			$c = array(
						array(
							'name'		=> __( 'Custom Colors', 'avia_framework' ),
							'desc'		=> __( 'Either use the themes default colors or apply some custom ones', 'avia_framework' ),
							'id'		=> 'color',
							'type'		=> 'select',
							'std'		=> '',
							'lockable'	=> true,
							'subtype'	=> array(
												__( 'Default', 'avia_framework' )				=> '',
												__( 'Define Custom Colors', 'avia_framework' )	=> 'custom'
											)
						),

						array(
							'name'		=> __( 'Custom Background Color', 'avia_framework' ),
							'desc'		=> __( 'Select a custom background color. Leave empty to use the default', 'avia_framework' ),
							'id'		=> 'custom_bg',
							'type'		=> 'colorpicker',
							'std'		=> '',
							//'container_class' => 'av_third av_third_first',
							'lockable'	=> true,
							'required'	=> array( 'color', 'equals', 'custom' )
						)

				);

			$template = array(
							array(
								'type'			=> 'template',
								'template_id'	=> 'toggle',
								'title'			=> __( 'Colors', 'avia_framework' ),
								'content'		=> $c
							),
					);

			AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'styling_colors' ), $template );


			$c = array(
						array(
								'type'			=> 'template',
								'template_id'	=> 'image_copyright_styling_toggle',
								'lockable'		=> true
						)

				);

			AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'styling_copyright' ), $c );

			/**
			 * Animation Tab
			 * =============
			 */

			$c = array(

						array(
							'type'			=> 'template',
							'template_id'	=> 'animation',
							'lockable'		=> true,
							'std'			=> 'active',
							'std_none'		=> '',
							'name'			=> __( 'Masonry Images Animation', 'avia_framework' ),
							'desc'			=> __( 'Add a small animation to the masonry items when the user first scrolls to the masonry element. This is only to add some &quot;spice&quot; to the site and only works in modern browsers.', 'avia_framework' ),
							'groups'		=> array( 'default', 'curtain' ),
							'multicolor'	=> true
						),

						array(
							'type'			=> 'template',
							'template_id'	=> 'image_hover',
							'id'			=> 'overlay_fx',
							'std'			=> 'active',
							'lockable'		=> true
						)

				);

			$template = array(
							array(
								'type'			=> 'template',
								'template_id'	=> 'toggle',
								'title'			=> __( 'Animation', 'avia_framework' ),
								'content'		=> $c
							),
					);

			AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'advanced_animation' ), $template );


		}

		/**
		 * Editor Element - this function defines the visual appearance of an element on the AviaBuilder Canvas
		 * Most common usage is to define some markup in the $params['innerHtml'] which is then inserted into the drag and drop container
		 * Less often used: $params['data'] to add data attributes, $params['class'] to modify the className
		 *
		 * @param array $params			holds the default values for $content and $args.
		 * @return array				usually holds an innerHtml key that holds item specific markup.
		 */
		public function editor_element( $params )
		{
			$params = parent::editor_element( $params );
			$params['innerHtml'] .=	AviaPopupTemplates()->get_html_template( 'alb_element_fullwidth_stretch' );

			return $params;
		}

		/**
		 * Editor Sub Element - this function defines the visual appearance of an element that is displayed within a modal window and on click opens its own modal window
		 * Works in the same way as Editor Element
		 *
		 * @param array $params			holds the default values for $content and $args.
		 * @return array				usually holds an innerHtml key that holds item specific markup.
		 */
		public function editor_sub_element( $params )
		{
			/**
			 * Currently not used because we have no modal_group defined for this element
			 */

//			$img_template = $this->update_template( 'img_fakeArg', '{{img_fakeArg}}' );
//			$template = $this->update_template( 'title', '{{title}}' );
//			$content = $this->update_template( 'content', '{{content}}' );
//
//			$thumbnail = isset( $params['args']['id'] ) ? wp_get_attachment_image( $params['args']['id'] ) : '';
//
//
//			$params['innerHtml']  = '';
//			$params['innerHtml'] .= "<div class='avia_title_container'>";
//			$params['innerHtml'] .=		"<span class='avia_slideshow_image' {$img_template} >{$thumbnail}</span>";
//			$params['innerHtml'] .=		"<div class='avia_slideshow_content'>";
//			$params['innerHtml'] .=			"<h4 class='avia_title_container_inner' {$template} >{$params['args']['title']}</h4>";
//			$params['innerHtml'] .=			"<p class='avia_content_container' {$content}>" . stripslashes( $params['content'] ) . '</p>';
//			$params['innerHtml'] .=		'</div>';
//			$params['innerHtml'] .= '</div>';

			return $params;
		}

		/**
		 * Create custom stylings
		 *
		 * @since 4.8.4
		 * @param array $args
		 * @since 4.8.9.1					added $ajax
		 * @return array
		 */
		protected function get_element_styles( array $args, $ajax = false )
		{
			$result = parent::get_element_styles( $args );

			extract( $result );

			//	Backwards comp. - make sure to provide "old" defaults for options not set
			$default = avia_masonry::default_args( $this->get_default_sc_args() );

			$locked = array();
			Avia_Element_Templates()->set_locked_attributes( $atts, $this, $shortcodename, $default, $locked, $content );
			Avia_Element_Templates()->add_template_class( $meta, $atts, $default );

			$atts = shortcode_atts( $default, $atts, $this->config['shortcode'] );

			$atts['container_class'] = 'av-masonry-entries' . trim( " {$atts['container_class']}" );

			if( ! isset( $this->obj_masonry[ $element_id ] ) )
			{
				$this->obj_masonry[ $element_id ] = new avia_masonry( $atts, $this );
			}

			$masonry = $this->obj_masonry[ $element_id ];
			$masonry->extract_terms();
			$masonry->query_entries( array(), $ajax );

			$result['default'] = $default;
			$result['atts'] = $atts;
			$result['content'] = $content;
			$result['element_styling'] = $element_styling;
			$result['meta'] = $meta;

			$result = $masonry->get_element_styles( $result, $this );

			return $result;
		}

		/**
		 * Returns output for ajax callback "Load More" button
		 * Called as callback from class avia_masonry
		 *
		 * @since 4.8.5.1
		 * @param array $atts
		 * @return string
		 */
		public function ajax_load_more( array $atts )
		{
			$args = array(
						'atts'			=> $atts,
						'content'		=> '',
						'shortcodename'	=> $this->config['shortcode']
					);

			$ajax = true;
			$result = $this->get_element_styles( $args, $ajax );

			extract( $result );

			if( 'disabled' == $atts['img_scrset'] )
			{
				Av_Responsive_Images()->force_disable( 'disabled' );
			}

			$masonry = $this->obj_masonry[ $element_id ];
			$output = $masonry->html( true );

			Av_Responsive_Images()->force_disable( 'reset' );

			return $output;
		}

		/**
		 * Frontend Shortcode Handler
		 *
		 * @param array $atts array of attributes
		 * @param string $content text within enclosing form of shortcode element
		 * @param string $shortcodename the shortcode found, when == callback name
		 * @return string $output returns the modified html string
		 */
		public function shortcode_handler( $atts, $content = '', $shortcodename = '', $meta = '' )
		{
			$result = $this->get_element_styles( compact( array( 'atts', 'content', 'shortcodename', 'meta' ) ) );

			extract( $result );
			extract( $atts );

			if( 'disabled' == $atts['img_scrset'] )
			{
				Av_Responsive_Images()->force_disable( 'disabled' );
			}

			//	Needed to add to surrounding section
			$av_display_classes = $element_styling->responsive_classes_string( 'hide_element', $atts );

			avia_sc_masonry_entries::$masonry_count ++;

			$params['class'] = "main_color {$av_display_classes} {$meta['el_class']}";
			$params['open_structure'] = false;
			$params['id'] = AviaHelper::save_string( $meta['custom_id_val'] , '-', 'av-sc-masonry-entries-' . avia_sc_masonry_entries::$masonry_count );
			$params['custom_markup'] = $meta['custom_markup'];

			if( ( $atts['gap'] == 'no' && $atts['sort'] == 'no' ) || $meta['index'] == 0 )
			{
				$params['class'] .= ' avia-no-border-styling';
			}

			//we dont need a closing structure if the element is the first one or if a previous fullwidth element was displayed before
			if( $meta['index'] == 0 )
			{
				$params['close'] = false;
			}

			if( ! empty( $meta['siblings']['prev']['tag'] ) && in_array( $meta['siblings']['prev']['tag'], AviaBuilder::$full_el_no_section ) )
			{
				$params['close'] = false;
			}

			if( $meta['index'] > 0 )
			{
				$params['class'] .= ' masonry-not-first';
			}

			if( $meta['index'] == 0 && get_post_meta( get_the_ID(), 'header', true ) != 'no' )
			{
				$params['class'] .= ' masonry-not-first';
			}

			$masonry = $this->obj_masonry[ $element_id ];

			/**
			 * Remove custom CSS from element if it is top level (otherwise added twice - $meta['el_class'] )
			 */
			if( ShortcodeHelper::is_top_level() )
			{
				$update = array(
							'custom_class'	=> '',
							'id'			=> ''
				);

				$masonry->update_config( $update );
			}

			$masonry_html = $masonry->html();

			Av_Responsive_Images()->force_disable( 'reset' );

			if( ! ShortcodeHelper::is_top_level() )
			{
				return $masonry_html;
			}

			if( ! empty( $atts['color'] ) && ! empty( $atts['custom_bg'] ) )
			{
				$params['class'] .= ' masonry-no-border';
			}

			$output  = '';
			$output .= avia_new_section( $params );
			$output .= $masonry_html;
			$output .= avia_section_after_element_content( $meta, 'after_masonry' );

			return $output;
		}
	}
}

