postslider

<?php
/**
 * Post Slider
 *
 * Display a Slideshow of Post Entries
 *
 * Todo: test with layerslider elements. currently throws error bc layerslider is only included if layerslider element is detected which is not the case with the post/page element
 *
 * This class does not support post css files
 *
 * Guenni007 : new lines from 902ff
 * ==========================================
 */
if( ! defined( 'ABSPATH' ) ) {  exit;  }    // Exit if accessed directly


if( ! class_exists( 'avia_sc_postslider' ) )
{
    class avia_sc_postslider extends aviaShortcodeTemplate
    {

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

            $this->config['name']           = __( 'Post Slider', 'avia_framework' );
            $this->config['tab']            = __( 'Content Elements', 'avia_framework' );
            $this->config['icon']           = AviaBuilder::$path['imagesURL'] . 'sc-postslider.png';
            $this->config['order']          = 30;
            $this->config['target']         = 'avia-target-insert';
            $this->config['shortcode']      = 'av_postslider';
            $this->config['tooltip']        = __( 'Display a Slideshow of Post Entries', 'avia_framework' );
            $this->config['drag-level']     = 3;
            $this->config['disabling_allowed'] = true;
            $this->config['id_name']        = 'id';
            $this->config['id_show']        = 'yes';
            $this->config['alb_desc_id']    = 'alb_description';
        }

        function extra_assets()
        {
            //load css
            wp_enqueue_style( 'avia-module-slideshow', AviaBuilder::$path['pluginUrlRoot'] . 'avia-shortcodes/slideshow/slideshow.css', array( 'avia-layout' ), false );
            wp_enqueue_style( 'avia-module-postslider', AviaBuilder::$path['pluginUrlRoot'] . 'avia-shortcodes/postslider/postslider.css', array( 'avia-module-slideshow' ), false );

                //load js
            wp_enqueue_script( 'avia-module-slideshow', AviaBuilder::$path['pluginUrlRoot'] . 'avia-shortcodes/slideshow/slideshow.js', array( 'avia-shortcodes' ), false, true );
        }

        /**
         * 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
         */
        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_slides' ),
                                                    $this->popup_key( 'content_filter' ),
                                                    $this->popup_key( 'content_excerpt' ),
                                                ),
                            '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_columns' ),
                                                    $this->popup_key( 'styling_image' ),
                                                    $this->popup_key( 'styling_navigation' )
                                                ),
                            '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_slider' ),
                                'nodescription' => true
                            ),

                        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?', 'avia_framework' ),
                            'desc'  => __( 'Select which entries should be displayed by selecting a taxonomy', 'avia_framework' ),
                            'id'    => 'link',
                            'type'  => 'linkpicker',
                            'fetchTMPL' => true,
                            'multiple'  => 6,
                            '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 );
            }

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

            AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'content_slides' ), $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(
                            'name'  => __( 'Entry Number', 'avia_framework' ),
                            'desc'  => __( 'How many items should be displayed?', 'avia_framework' ),
                            'id'    => 'items',
                            'type'  => 'select',
                            'std'   => '9',
                            'lockable'  => true,
                            'subtype'   => AviaHtmlHelper::number_array( 1, 100, 1, array( 'All' => '-1' ) )
                        ),

                        array(
                            'name'  => __( 'Offset Number', 'avia_framework' ),
                            'desc'  => __( 'The offset determines where the query begins pulling posts. Useful if you want to remove a certain number of posts because you already query them with another post slider element.', 'avia_framework' ),
                            'id'    => 'offset',
                            'type'  => 'select',
                            'std'   => '0',
                            'lockable'  => true,
                            'subtype'   => AviaHtmlHelper::number_array( 1, 100, 1, array( __( 'Deactivate offset', 'avia_framework') => '0', __( 'Do not allow duplicate posts on the entire page (set offset automatically)', 'avia_framework' ) => 'no_duplicates' ) )
                        )
                );

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

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

            $c = array(
                        array(
                            'name'  => __( 'Slide Content', 'avia_framework' ),
                            'desc'  => __( 'Select what information you want to display', 'avia_framework' ),
                            'id'    => 'contents',
                            'type'  => 'select',
                            'std'   => 'excerpt',
                            'lockable'  => true,
                            'subtype'   => array(
                                                __( 'Title and Excerpt', 'avia_framework' )                 => 'excerpt',
                                                __( 'Title, Excerpt and Read More Link', 'avia_framework' ) => 'excerpt_read_more',
                                                __( 'Only Title', 'avia_framework' )                        => 'title',
                                                __( 'Title and Read More Link', 'avia_framework' )          => 'title_read_more',
                                                __( 'Only Excerpt', 'avia_framework' )                      => 'only_excerpt',
                                                __( 'Excerpt and Read More Link', 'avia_framework' )        => 'only_excerpt_read_more',
                                                __( 'No Title, no Excerpt', 'avia_framework' )              => 'no'
                                            )
                        ),

                );

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

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


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

            $c = array(
                        array(
                            'name'  => __( 'Columns', 'avia_framework' ),
                            'desc'  => __( 'How many columns should be displayed?', 'avia_framework' ),
                            'id'    => 'columns',
                            'type'  => 'select',
                            'std'   => '3',
                            'lockable'  => true,
                            'subtype'   => array(
                                                __( '1 Columns', 'avia_framework' ) => '1',
                                                __( '2 Columns', 'avia_framework' ) => '2',
                                                __( '3 Columns', 'avia_framework' ) => '3',
                                                __( '4 Columns', 'avia_framework' ) => '4',
                                                __( '5 Columns', 'avia_framework' ) => '5',
                                            )
                        )

                );

            $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'  => __( 'Preview Image Size', 'avia_framework' ),
                            'desc'  => __( 'Set the image size of the preview images', 'avia_framework' ),
                            'id'    => 'preview_mode',
                            'type'  => 'select',
                            'std'   => 'auto',
                            'lockable'  => true,
                            'subtype'   => array(
                                                __( 'Set the preview image size automatically based on column width', 'avia_framework' )    => 'auto',
                                                __( 'Choose the preview image size manually (select thumbnail size)', 'avia_framework' )    => 'custom'
                                            )
                        ),

                        array(
                            'name'  => __( 'Select custom preview image size', 'avia_framework' ),
                            'desc'  => __( 'Choose image size for Preview Image', 'avia_framework' ),
                            'id'    => 'image_size',
                            'type'  => 'select',
                            'std'   => 'portfolio',
                            'lockable'  => true,
                            'required'  => array( 'preview_mode', 'equals', 'custom' ),
                            'subtype'   =>  AviaHelper::get_registered_image_sizes( array( 'logo' ) )
                        )
                );

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

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


            $c = array(

                        array(
                            'type'          => 'template',
                            'template_id'   => 'slideshow_controls',
                            'std_nav'       => 'av-navigate-arrows',
                            'lockable'      => true
                        )

                );

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

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

            /**
             * Advanced Tab
             * ===========
             */

            $c = array(
/*
                        array(
                            'name'  => __( 'Post Slider Transition', 'avia_framework' ),
                            'desc'  => __( 'Choose the transition for your Post Slider.', 'avia_framework' ),
                            'id'    => 'animation',
                            'type'  => 'select',
                            'std'   => 'fade',
                            'subtype'   => array(
                                                __( 'Slide', 'avia_framework' ) => 'slide',
                                                __( 'Fade', 'avia_framework' )  => 'fade'
                                            ),
                        ),
*/

                        array(
                            'type'          => 'template',
                            'template_id'   => 'slideshow_rotation',
                            'select_vals'   => 'yes,no',
                            'stop_id'       => 'autoplay_stopper',
                            'lockable'      => true
                        )

                );

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

            AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'advanced_animation_slider' ), $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 this array holds the default values for $content and $args.
         * @return $params the return array usually holds an innerHtml key that holds item specific markup.
         */
        function editor_element( $params )
        {
            $params = parent::editor_element( $params );
            $params['content'] = null; //remove to allow content elements

            return $params;
        }

        /**
         * 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
         */
        function shortcode_handler( $atts, $content = '', $shortcodename = '', $meta = '' )
        {
            $default = avia_post_slider::get_defaults();

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

            $screen_sizes = AviaHelper::av_mobile_sizes( $atts );

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

            if( isset( $atts['link'] ) )
            {
                $atts['link'] = explode(',', $atts['link'], 2 );
                $atts['taxonomy'] = $atts['link'][0];

                if( isset( $atts['link'][1] ) )
                {
                    $atts['categories'] = $atts['link'][1];
                }
            }

            $atts['class'] = $meta['el_class'];
            $atts['el_id'] = $meta['custom_el_id'];

            $atts = array_merge( $atts, $screen_sizes );

            /**
             * @since 4.5.5
             * @return array
             */
            $atts = apply_filters( 'avf_post_slider_args', $atts, $this->config['shortcode'], $this );

            $slider = new avia_post_slider( $atts );
            $slider->query_entries();
            $html = $slider->html();

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

            return $html;
        }

    }
}


if ( ! class_exists( 'avia_post_slider' ) )
{
    /**
     * This class does not support post css files
     * ==========================================
     */
    class avia_post_slider
    {
        /**
         * @since < 4.0
         * @var int
         */
        static public $slide = 0;

        /**
         *
         * @since < 4.0
         * @var array
         */
        protected $atts;

        /**
         *
         * @since < 4.0
         * @var WP_Query
         */
        protected $entries;

        /**
         *
         * @since 4.7.6.4
         * @var int
         */
        protected $current_page;

        /**
         * @since < 4.0
         * @param array $atts
         */
        public function __construct( $atts = array() )
        {
            $this->entries = array();
            $this->current_page = 1;

            $this->atts = shortcode_atts( avia_post_slider::get_defaults(), $atts, 'av_postslider' );

            if( ! in_array( $this->atts['slider_navigation'], array( 'av-navigate-arrows', 'av-navigate-dots', 'av-navigate-arrows av-navigate-dots' ) ) )
            {
                $this->atts['slider_navigation'] = 'av-navigate-arrows';
            }
        }

        /**
         * @since 4.5.5
         */
        public function __destruct()
        {
            unset( $this->atts );
            unset( $this->entries );
        }

        /**
         * Returns the defaults array
         *
         * @since 4.8
         * @return array
         */
        static public function get_defaults()
        {
            $defaults = array(
                            'type'              => 'slider', // can also be used as grid
                            'style'             => '', //no_margin
                            'columns'           => '4',
                            'items'             => '16',
                            'taxonomy'          => 'category',
                            'control_layout'    => 'av-control-default',
                            'slider_navigation' => 'av-navigate-arrows',
                            'nav_visibility_desktop'    => '',
                            'wc_prod_visible'   => '',
                            'wc_prod_hidden'    => '',
                            'wc_prod_featured'  => '',
                            'prod_order_by'     => '',
                            'prod_order'        => '',
                            'show_meta_data'    => '',      //  '' | 'always' | 'on_empty_title' | 'on_empty_content' (use filter to change)
                            'post_type'         => get_post_types(),
                            'contents'          => 'excerpt',
                            'preview_mode'      => 'auto',
                            'image_size'        => 'portfolio',
                            'animation'         => 'fade',
                            'transition_speed'  => '',
                            'autoplay'          => 'no',
                            'interval'          => 5,
                            'autoplay_stopper'  => '',
                            'manual_stopper'    => '',
                            'paginate'          => 'no',
                            'use_main_query_pagination' => 'no',
                            'class'             => '',
                            'el_id'             => '',
                            'categories'        => array(),
                            'custom_query'      => array(),
                            'offset'            => 0,
                            'custom_markup'     => '',
                            'av_display_classes'    => '',
                            'date_filter'       => '',
                            'date_filter_start' => '',
                            'date_filter_end'   => '',
                            'date_filter_format'    => 'yy/mm/dd',      //  'yy/mm/dd' | 'dd-mm-yy' | yyyymmdd
                            'period_filter_unit_1'  => '',
                            'period_filter_unit_2'  => '',
                            'lazy_loading'          => 'disabled',
                            'img_scrset'            => ''
            );

            return $defaults;
        }

        /**
         *
         * @since < 4.0
         * @return string
         */
        public function html()
        {
            $output = '';

            if( empty( $this->entries ) || empty( $this->entries->posts ) )
            {
                return $output;
            }

            avia_post_slider::$slide ++;
            extract( $this->atts );

            if( $preview_mode == 'auto' )
            {
                $image_size = 'portfolio';
            }

            $extraClass         = 'first';
            $grid               = 'one_third';
            $post_loop_count    = 1;
            $loop_counter       = 1;
            $autoplay           = $autoplay == 'no' ? false : true;
            $total              = $columns % 2 ? 'odd' : 'even';
            $blogstyle          = function_exists( 'avia_get_option' ) ? avia_get_option( 'blog_global_style', '' ) : '';
            $excerpt_length     = 60;

            $class .= " av-slideshow-ui {$control_layout} {$nav_visibility_desktop} ";

            if( 'av-control-hidden' == $control_layout )
            {
                $class .= ' av-no-slider-navigation av-hide-nav-arrows';
            }
            else
            {
                if( false === strpos( $slider_navigation, 'av-navigate-arrows' ) )
                {
                    $class .= ' av-hide-nav-arrows';
                }

                if( false === strpos( $slider_navigation, 'av-navigate-dots' ) )
                {
                    $class .= ' av-no-slider-navigation';
                }
            }

            if( 'true' == $autoplay )
            {
                $class .= ' av-slideshow-autoplay';
                $val_autoplay = true;

                if( ! empty( $autoplay_stopper ) )
                {
                    $class .= ' av-loop-once';
                    $val_loop = 'once';
                }
                else
                {
                    $class .= ' av-loop-endless';
                    $val_loop = 'endless';
                }
            }
            else
            {
                $class .= ' av-slideshow-manual av-loop-once';
                $val_autoplay = false;
                $val_loop = 'once';
            }

            if( '' == $interval )
            {
                $interval = 5;
            }

            if( false !== strpos( $manual_stopper, 'manual_stopper' ) )
            {
                $class .= ' av-loop-manual-once';
                $val_loop_manual = 'manual-once';
            }
            else
            {
                $class .= ' av-loop-manual-endless';
                $val_loop_manual = 'manual-endless';
            }

            $slideshow_options = array(
                                    'animation'         => $animation,
                                    'autoplay'          => $val_autoplay,
                                    'loop_autoplay'     => $val_loop,
                                    'interval'          => $interval,
                                    'loop_manual'       => $val_loop_manual,
                                    'autoplay_stopper'  => 'aviaTBautoplay_stopper' == $autoplay_stopper,
                                    'noNavigation'      => 'av-control-hidden' == $control_layout,
                                    'show_slide_delay'  => 90
                                );

            $data = 'data-slideshow-options="' . esc_attr( json_encode( $slideshow_options ) ) . '"';



            if( $blogstyle !== '' )
            {
                $excerpt_length = 240;
            }

            switch( $columns )
            {
                case '1':
                    $grid = 'av_fullwidth';
                    if( $preview_mode == 'auto' )
                    {
                        $image_size = 'large';
                    }
                    break;
                case '2':
                    $grid = 'av_one_half';
                    break;
                case '3':
                    $grid = 'av_one_third';
                    break;
                case '4':
                    $grid = 'av_one_fourth';
                    if( $preview_mode == 'auto' )
                    {
                        $image_size = 'portfolio_small';
                    }
                    break;
                case '5':
                    $grid = 'av_one_fifth';
                    if( $preview_mode == 'auto' )
                    {
                        $image_size = 'portfolio_small';
                    }
                    break;
            }



            $thumb_fallback = '';
            $markup_container = avia_markup_helper( array( 'context' => 'blog', 'echo' => false, 'custom_markup' => $custom_markup ) );


            $output .= "<div {$el_id} {$data} class='avia-content-slider avia-content-{$type}-active avia-content-slider" . avia_post_slider::$slide . " avia-content-slider-{$total} {$class} {$av_display_classes}' {$markup_container}>";
            $output .=      '<div class="avia-content-slider-inner">';

            foreach( $this->entries->posts as $index => $entry )
            {
                $the_id     = $entry->ID;
                $parity     = $loop_counter % 2 ? 'odd' : 'even';
                $last       = $this->entries->post_count == $post_loop_count ? ' post-entry-last ' : '';
                $post_class = "post-entry post-entry-{$the_id} slide-entry-overview slide-loop-{$post_loop_count} slide-parity-{$parity} {$last}";
                $link       = get_post_meta( $the_id , '_portfolio_custom_link', true ) != '' ? get_post_meta( $the_id , '_portfolio_custom_link_url', true ) : get_permalink( $the_id );
                $excerpt    = '';
                $title      = '';
                $show_meta  = ! is_post_type_hierarchical( $entry->post_type );
                $commentCount = get_comments_number( $the_id );
                $format     = get_post_format( $the_id );

                $post_thumbnail_id = get_post_thumbnail_id( $the_id );
                if( $lazy_loading != 'enabled' )
                {
                    Av_Responsive_Images()->add_attachment_id_to_not_lazy_loading( $post_thumbnail_id );
                }

                $thumbnail = get_the_post_thumbnail( $the_id, $image_size );

                if( empty( $format ) )
                {
                    $format = 'standard';
                }

                if( $thumbnail )
                {
                    $thumb_fallback = $thumbnail;
                    $thumb_class    = 'real-thumbnail';
                }
                else
                {
                    $thumbnail = "<span class='fallback-post-type-icon' " . av_icon_string( $format ) .  "></span><span class='slider-fallback-image'>{{thumbnail}}</span>";
                    $thumb_class = 'fake-thumbnail';
                }


                $permalink = '<div class="read-more-link"><a href="' . get_permalink( $the_id ) . '" class="more-link">' . __( 'Read more', 'avia_framework' ) . '<span class="more-link-arrow"></span></a></div>';
                $prepare_excerpt = ! empty( $entry->post_excerpt ) ? $entry->post_excerpt : avia_backend_truncate( $entry->post_content, apply_filters( 'avf_postgrid_excerpt_length', $excerpt_length ) , apply_filters( 'avf_postgrid_excerpt_delimiter' , ' ' ), '…', true, '' );

                if( $format == 'link' )
                {
                    $current_post = array();
                    $current_post['content'] = $entry->post_content;
                    $current_post['title'] = avia_wp_get_the_title( $entry );

                    if( function_exists( 'avia_link_content_filter' ) )
                    {
                        $current_post = avia_link_content_filter( $current_post );
                    }

                    $link = $current_post['url'];
                }

                switch( $contents )
                {
                    case 'excerpt':
                            $excerpt = $prepare_excerpt;
                            $title = avia_wp_get_the_title( $entry );
                            break;
                    case 'excerpt_read_more':
                            $excerpt = $prepare_excerpt;
                            $excerpt .= $permalink;
                            $title = avia_wp_get_the_title( $entry );
                            break;
                    case 'title':
                            $excerpt = '';
                            $title = avia_wp_get_the_title( $entry );
                            break;
                    case 'title_read_more':
                            $excerpt = $permalink;
                            $title = avia_wp_get_the_title( $entry );
                            break;
                    case 'only_excerpt':
                            $excerpt = $prepare_excerpt;
                            $title = '';
                            break;
                    case 'only_excerpt_read_more':
                            $excerpt = $prepare_excerpt;
                            $excerpt .= $permalink;
                            $title = '';
                            break;
                    case 'no':
                            $excerpt = '';
                            $title = '';
                            break;
                }

                /**
                 * @since < 4.0
                 * @param string $title
                 * @param WP_Post $entry
                 * @return string
                 */
                $title = apply_filters( 'avf_postslider_title', $title, $entry );


                /**
                 * @since 4.7.3.1
                 * @param string $image_link_title
                 * @param WP_Post $entry
                 * @return string
                 */
                $image_link_title = apply_filters( 'avf_postslider_link_title_attr', esc_attr( avia_wp_get_the_title( $entry ) ), $entry );

                $markup_article = avia_markup_helper( array( 'context' => 'entry', 'echo' => false, 'id' => $the_id, 'custom_markup' => $custom_markup ) );
                $markup_title = avia_markup_helper( array( 'context' => 'entry_title', 'echo' => false, 'id' => $the_id, 'custom_markup' => $custom_markup ) );
                $markup_time = avia_markup_helper( array( 'context' => 'entry_time', 'echo' => false, 'id' => $the_id, 'custom_markup' => $custom_markup ) );
                $markup_content = avia_markup_helper( array( 'context' => 'entry_content', 'echo' => false, 'id' => $the_id, 'custom_markup' => $custom_markup ) );

                $post_format = get_post_format( $the_id ) ? get_post_format( $the_id ) : 'standard';

                if( $loop_counter == 1 )
                {
                    $output .= '<div class="slide-entry-wrap">';
                }

// new lines to bring post tags and category as class to the article slide-entry

                $posttags = get_the_tags($the_id);
                foreach($posttags as $posttag)
                {
                    $post_class .= 'tag-' . strtolower($posttag->name) . ' ';
                }

                $postcats = get_the_category($the_id , 'category');
                foreach($postcats as $postcat)
                {
                    $post_class .= 'cat-' . strtolower($postcat->category_nicename) . ' ';
                }

                $postterms = get_the_terms($the_id, 'portfolio_entries');
                foreach($postterms as $postterm)
                {
                    $post_class .= 'term-' . strtolower($postterm->slug) . ' ';
                }

// END of new lines to bring post tag as class to the article post-entry

                $output .= "<article class='slide-entry flex_column {$style} {$post_class} {$grid} {$extraClass} {$thumb_class} post-format-{$post_format}' {$markup_article}>";
                $output .= $thumbnail ? "<a href='{$link}' data-rel='slide-" . avia_post_slider::$slide . "' class='slide-image' title='{$image_link_title}'>{$thumbnail}</a>" : '';

                if( $post_format == 'audio' )
                {
                    $current_post = array();
                    $current_post['content'] = $entry->post_content;
                    $current_post['title'] = avia_wp_get_the_title( $entry );
                    $current_post['id'] = $entry->ID;

                    $current_post = apply_filters( 'post-format-' . $post_format, $current_post, $entry );

                    if( ! empty( $current_post['before_content'] ) )
                    {
                        $output .= '<div class="big-preview single-big audio-preview">' . $current_post['before_content'] . '</div>';
                    }
                }

                $output .= '<div class="slide-content">';


                $output .= '<header class="entry-content-header">';
                $meta_out = '';

                if( ! empty( $title ) || in_array( $show_meta_data, array( 'always', 'on_empty_title' ) ) )
                {
                    if( $show_meta )
                    {
                        $taxonomies = get_object_taxonomies( get_post_type( $the_id ) );
                        $cats = '';
                        $excluded_taxonomies = array_merge( get_taxonomies( array( 'public' => false ) ), array( 'post_tag', 'post_format' ) );
                        $excluded_taxonomies = apply_filters( 'avf_exclude_taxonomies', $excluded_taxonomies, get_post_type( $the_id ), $the_id );

                        if( ! empty( $taxonomies ) )
                        {
                            foreach( $taxonomies as $taxonomy )
                            {
                                if( ! in_array( $taxonomy, $excluded_taxonomies ) )
                                {
                                    $cats .= get_the_term_list( $the_id, $taxonomy, '', ', ', '' ) . ' ';
                                }
                            }
                        }

                        if( ! empty( $cats ) )
                        {
                            $meta_out .= '<span class="blog-categories minor-meta">';
                            $meta_out .=    $cats;
                            $meta_out .= '</span>';
                        }
                    }

                    /**
                     * Allow to change default output of categories - by default supressed for setting Default(Business) blog style
                     *
                     * @since 4.0.6
                     * @param string $blogstyle                     '' | 'elegant-blog' | 'elegant-blog modern-blog'
                     * @param avia_post_slider $this
                     * @return string                               'show_elegant' | 'show_business' | 'use_theme_default' | 'no_show_cats'
                     */
                    $show_cats = apply_filters( 'avf_postslider_show_catergories', 'use_theme_default', $blogstyle, $this );

                    switch( $show_cats )
                    {
                        case 'no_show_cats':
                            $new_blogstyle = '';
                            break;
                        case 'show_elegant':
                            $new_blogstyle = 'elegant-blog';
                            break;
                        case 'show_business':
                            $new_blogstyle = 'elegant-blog modern-blog';
                            break;
                        case 'use_theme_default':
                        default:
                            $new_blogstyle = $blogstyle;
                            break;
                    }

                        //  elegant style
                    if( ( strpos( $new_blogstyle, 'modern-blog' ) === false ) && ( $new_blogstyle != '' ) )
                    {
                        $output .= $meta_out;
                    }

                    $default_heading = 'h3';
                    $args = array(
                                'heading'       => $default_heading,
                                'extra_class'   => ''
                            );

                    $extra_args = array( $this, $index, $entry );

                    /**
                     * @since 4.5.5
                     * @return array
                     */
                    $args = apply_filters( 'avf_customize_heading_settings', $args, __CLASS__, $extra_args );

                    $heading = ! empty( $args['heading'] ) ? $args['heading'] : $default_heading;
                    $css = ! empty( $args['extra_class'] ) ? $args['extra_class'] : '';


                    $output .=  "<{$heading} class='slide-entry-title entry-title {$css}' {$markup_title}><a href='{$link}' title='" . esc_attr( strip_tags( $title ) ) . "'>{$title}</a></{$heading}>";

                        //  modern business style
                    if( ( strpos( $new_blogstyle, 'modern-blog' ) !== false ) && ( $new_blogstyle != '' ) )
                    {
                        $output .= $meta_out;
                    }

                    $output .= '<span class="av-vertical-delimiter"></span>';
                }

                $output .= '</header>';

                if( ( $show_meta && ! empty( $excerpt ) ) || in_array( $show_meta_data, array( 'always', 'on_empty_content' ) ) )
                {
                    $meta_content = '';

                    if ( $commentCount != '0' || comments_open( $the_id ) && $entry->post_type != 'portfolio' )
                    {
                        $link_add = $commentCount === '0' ? '#respond' : '#comments';
                        $text_add = $commentCount === '1' ? __( 'Comment', 'avia_framework' ) : __( 'Comments', 'avia_framework' );

                        $meta_content .= '<div class="slide-meta-comments">';
                        $meta_content .=    "<a href='{$link}{$link_add}'>{$commentCount} {$text_add}</a>";
                        $meta_content .= '</div>';
                        $meta_content .= '<div class="slide-meta-del">/</div>';
                    }


                    $meta_content .= "<time class='slide-meta-time updated' {$markup_time}>" . get_the_time( get_option( 'date_format' ), $the_id ) . '</time>';

                    /**
                     *
                     * @since 4.8.8
                     * @param string $meta_content
                     * @param WP_Post $entry
                     * @param int $index
                     * @param array $this->atts
                     */
                    $meta_content = apply_filters( 'avf_post_slider_meta_content', $meta_content, $entry, $index, $this->atts );

                    if( ! empty( $meta_content ) )
                    {
                        $meta  = '<div class="slide-meta">';
                        $meta .=    $meta_content;
                        $meta .= '</div>';
                    }

                    if( strpos( $blogstyle, 'elegant-blog' ) === false )
                    {
                        $output .= $meta;
                        $meta = '';
                    }
                }



                /**
                 * @since ???
                 * @since 4.8.7             added $this
                 * @param string $excerpt
                 * @param string $prepare_excerpt
                 * @param string $permalink
                 * @param WP_Post $entry
                 * @param avia_post_slider $this
                 * @return string
                 */
                $excerpt = apply_filters( 'avf_post_slider_entry_excerpt', $excerpt, $prepare_excerpt, $permalink, $entry, $this );


                $output .= ! empty( $excerpt ) ? "<div class='slide-entry-excerpt entry-content' {$markup_content}>{$excerpt}</div>" : '';

                $output .= '</div>';
                $output .= '<footer class="entry-footer">';
                if( ! empty( $meta ) )
                {
                    $output .= $meta;
                }
                $output .= '</footer>';

                $output .= av_blog_entry_markup_helper( $the_id );

                $output .= '</article>';

                $loop_counter ++;
                $post_loop_count ++;
                $extraClass = '';

                if( $loop_counter > $columns )
                {
                    $loop_counter = 1;
                    $extraClass = 'first';
                }

                if( $loop_counter == 1 || ! empty( $last ) )
                {
                    $output .= '</div>';
                }
            }

            $output .=      '</div>';

            if( $post_loop_count -1 > $columns && $type == 'slider' )
            {
                $output .= $this->slide_navigation_arrows();

                if( 'av-control-hidden' != $control_layout && false !== strpos( $slider_navigation, 'av-navigate-dots' )  )
                {
                    $output .= $this->slide_navigation_dots();
                }
            }

            global $wp_query;

            $avia_pagination = '';

            if( $use_main_query_pagination == 'yes' && $paginate == 'yes' )
            {
                $avia_pagination = avia_pagination( $wp_query->max_num_pages, 'nav' );
            }
            else if( $paginate == 'yes' )
            {
                $avia_pagination = avia_pagination( $this->entries, 'nav', 'avia-element-paging', $this->current_page );
            }

            if( ! empty( $avia_pagination ) )
            {
                $output .= "<div class='pagination-wrap pagination-slider'>{$avia_pagination}</div>";
            }


            $output .= '</div>';

            $output = str_replace( '{{thumbnail}}', $thumb_fallback, $output );

            wp_reset_query();
            return $output;
        }

        /**
         * Create arrows to scroll slides
         *
         * @since 4.8.3         reroute to aviaFrontTemplates
         * @return string
         */
        protected function slide_navigation_arrows()
        {
            $args = array(
                        'context'       => get_class(),
                        'params'        => $this->atts
                    );

            return aviaFrontTemplates::slide_navigation_arrows( $args );
        }

        /**
         * Create dots to scroll tabs
         *
         * @since 5.0           reroute to aviaFrontTemplates
         * @return string
         */
        protected function slide_navigation_dots()
        {
            $args = array(
                        'class_main'        => 'avia-slideshow-dots avia-slideshow-controls avia-post-slider fade-in',
                        'total_entries'     => $this->entries->post_count,
                        'container_entries' => $this->atts['columns'],
                        'context'           => get_class(),
                        'params'            => $this->atts
                    );

            return aviaFrontTemplates::slide_navigation_dots( $args );
        }

        /**
         * Fetch new entries
         *
         * @since < 4.0
         * @param array $params
         */
        public function query_entries( $params = array() )
        {
            global $avia_config;

            if( empty( $params ) )
            {
                $params = $this->atts;
            }

            if( empty( $params['custom_query'] ) )
            {
                $query = array();
                $terms = array();

                if( ! empty( $params['categories'] ) )
                {
                    //get the portfolio categories
                    $terms = explode( ',', $params['categories'] );
                }

                if( $params['use_main_query_pagination'] == 'yes' )
                {
                    $this->current_page = ( $params['paginate'] != 'no' ) ? avia_get_current_pagination_number() : 1;
                }
                else
                {
                    $this->current_page = ( $params['paginate'] != 'no' ) ? avia_get_current_pagination_number( 'avia-element-paging' ) : 1;
                }

                //if we find no terms for the taxonomy fetch all taxonomy terms
                if( empty( $terms[0] ) || is_null( $terms[0] ) || $terms[0] === 'null' )
                {
                    $term_args = array(
                                'taxonomy'      => $params['taxonomy'],
                                'hide_empty'    => true
                            );
                    /**
                     * To display private posts you need to set 'hide_empty' to false,
                     * otherwise a category with ONLY private posts will not be returned !!
                     *
                     * You also need to add post_status 'private' to the query params with filter avia_post_slide_query.
                     *
                     * @since 4.4.2
                     * @added_by Günter
                     * @param array $term_args
                     * @param array $params
                     * @return array
                     */
                    $term_args = apply_filters( 'avf_av_postslider_term_args', $term_args, $params );

                    $allTax = AviaHelper::get_terms( $term_args );

                    $terms = array();
                    foreach( $allTax as $tax )
                    {
                        $terms[] = $tax->term_id;
                    }
                }

                if( $params['offset'] == 'no_duplicates' )
                {
                    $params['offset'] = false;
                    $no_duplicates = true;
                }

                //wordpress 4.4 offset fix
                if( $params['offset'] == 0 )
                {
                    $params['offset'] = false;
                }
                else
                {
                    //if the offset is set the paged param is ignored. therefore we need to factor in the page number
                    $params['offset'] = $params['offset'] + ( ( $this->current_page - 1 ) * $params['items'] );
                }

                if( empty( $params['post_type'] ) )
                {
                    $params['post_type'] = get_post_types();
                }

                if( is_string($params['post_type'] ) )
                {
                    $params['post_type'] = explode( ',', $params['post_type'] );
                }

                $orderby = 'date';
                $order = 'DESC';

                $date_query = AviaHelper::date_query( array(), $params );

                // Meta query - replaced by Tax query in WC 3.0.0
                $meta_query = array();
                $tax_query = array();


                // check if taxonomy are set to product or product attributes
                $tax = get_taxonomy( $params['taxonomy'] );

                if( class_exists( 'WooCommerce' ) && is_object( $tax ) && isset( $tax->object_type ) && in_array( 'product', (array) $tax->object_type ) )
                {
                    $avia_config['woocommerce']['disable_sorting_options'] = true;

                    avia_wc_set_out_of_stock_query_params( $meta_query, $tax_query, $params['wc_prod_visible'] );
                    avia_wc_set_hidden_prod_query_params( $meta_query, $tax_query, $params['wc_prod_hidden'] );
                    avia_wc_set_featured_prod_query_params( $meta_query, $tax_query, $params['wc_prod_featured'] );

                        //  sets filter hooks !!
                    $ordering_args = avia_wc_get_product_query_order_args( $params['prod_order_by'], $params['prod_order'] );

                    $orderby = $ordering_args['orderby'];
                    $order = $ordering_args['order'];
                    $params['meta_key'] = $ordering_args['meta_key'];
                }

                if( ! empty( $terms ) )
                {
                    $tax_query[] = array(
                                        'taxonomy'  =>  $params['taxonomy'],
                                        'field'     =>  'id',
                                        'terms'     =>  $terms,
                                        'operator'  =>  'IN'
                                );
                }

                $query = array(
                                'orderby'       => $orderby,
                                'order'         => $order,
                                'paged'         => $this->current_page,
                                'post_type'     => $params['post_type'],
//                              'post_status'   => 'publish',
                                'offset'        => $params['offset'],
                                'posts_per_page' => $params['items'],
                                'post__not_in'  => ( ! empty( $no_duplicates ) ) ? $avia_config['posts_on_current_page'] : array(),
                                'meta_query'    => $meta_query,
                                'tax_query'     => $tax_query,
                                'date_query'    => $date_query
                            );
            }
            else
            {
                $query = $params['custom_query'];
            }

            if( ! empty( $params['meta_key'] ) )
            {
                $query['meta_key'] = $params['meta_key'];
            }

            /**
             * @used_by             config-bbpress\config.php   avia_remove_bbpress_post_type_from_query()          10
             * @used_by             config-wpml\config.php      avia_translate_ids_from_query                       10
             * @used_by             avia_WPML::handler_avia_post_slide_query                                        20
             *
             * @since < 4.0
             * @param array $query
             * @param array $params
             * @return array
             */
            $query = apply_filters( 'avia_post_slide_query', $query, $params );

            @$this->entries = new WP_Query( $query ); //@ is used to prevent errors caused by wpml

            // store the queried post ids in
            if( $this->entries->post_count > 0 )
            {
                foreach( $this->entries->posts as $entry )
                {
                    $avia_config['posts_on_current_page'][] = $entry->ID;
                }
            }

            if( function_exists( 'WC' ) )
            {
                avia_wc_clear_catalog_ordering_args_filters();
                $avia_config['woocommerce']['disable_sorting_options'] = false;
            }
        }
    }
}