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Editing: elementor-post-query.php

<?php
namespace ElementorPro\Modules\QueryControl\Classes;

use Elementor\Widget_Base;
use ElementorPro\Modules\QueryControl\Module;
use ElementorPro\Core\Utils;

/**
 * Class Elementor_Post_Query
 * Wrapper for WP_Query.
 * Used by the various widgets for generating the query, according to the controls added using Group_Control_Query.
 * Each class instance is associated with the specific widget that is passed in the class constructor.
 */
class Elementor_Post_Query {
	/** @var Widget_Base */
	protected $widget;
	protected $query_args;
	protected $prefix;
	protected $widget_settings;

/**
	 * Elementor_Post_Query constructor.
	 *
	 * @param Widget_Base $widget
	 * @param string $group_query_name
	 * @param array $query_args
	 */
	public function __construct( $widget, $group_query_name, $query_args = [] ) {
		$this->widget = $widget;
		$this->prefix = $group_query_name . '_';
		$this->query_args = $query_args;

$settings = $this->widget->get_settings_for_display();
		$defaults = $this->get_query_defaults();

$this->widget_settings = wp_parse_args( $settings, $defaults );
	}

/**
	 * 1) build query args
	 * 2) invoke callback to fine-tune query-args
	 * 3) generate WP_Query object
	 * 4) if no results & fallback is set, generate a new WP_Query with fallback args
	 * 5) return WP_Query
	 *
	 * @return \WP_Query
	 */
	public function get_query() {
		$this->get_query_args();

$offset_control = $this->get_widget_settings( 'offset' );

$query_id = $this->get_widget_settings( 'query_id' );
		if ( ! empty( $query_id ) ) {
			add_action( 'pre_get_posts', [ $this, 'pre_get_posts_query_filter' ] );
		}

if ( ! $this->is_manual_selection() && 0 < $offset_control ) {
			/**
			 * @see https://codex.wordpress.org/Making_Custom_Queries_using_Offset_and_Pagination
			 */
			add_action( 'pre_get_posts', [ $this, 'fix_query_offset' ], 1 );
			add_filter( 'found_posts', [ $this, 'fix_query_found_posts' ], 1, 2 );
		}

$query = new \WP_Query( $this->query_args );// SQL_CALC_FOUND_ROWS is used.

remove_action( 'pre_get_posts', [ $this, 'pre_get_posts_query_filter' ] );
		remove_action( 'pre_get_posts', [ $this, 'fix_query_offset' ], 1 );
		remove_filter( 'found_posts', [ $this, 'fix_query_found_posts' ], 1 );

$ids = isset( $this->query_args['fields'] ) && 'ids' === $this->query_args['fields']
			? $query->posts
			: wp_list_pluck( $query->posts, 'ID' );

Module::add_to_avoid_list( $ids );

/**
		 * Elementor Pro query results.
		 *
		 * Fires before the actual query is run. This hook allows developers
		 * to alter individual query results.
		 *
		 * @param \WP_Query   $query  An instance of WordPress query.
		 * @param Widget_Base $widget An instance of Elementor widget.
		 */
		do_action( 'elementor/query/query_results', $query, $this->widget );

return $query;
	}

protected function get_query_defaults() {
		$defaults = [
			$this->prefix . 'post_type' => 'post',
			$this->prefix . 'posts_ids' => [],
			$this->prefix . 'orderby' => 'date',
			$this->prefix . 'order' => 'desc',
			$this->prefix . 'offset' => 0,
			$this->prefix . 'posts_per_page' => 3,
		];

return $defaults;
	}

public function get_query_args() {
		$post_type = $this->get_widget_settings( 'post_type' );

if ( 'current_query' === $post_type ) {
			$current_query_vars = $GLOBALS['wp_query']->query_vars;

/**
			 * Add custom paged option support. It's necessary for ajax and individual pagination support
			 */
			if ( ! empty( $this->query_args['has_custom_pagination'] ) && true === $this->query_args['has_custom_pagination'] ) {
				$current_query_vars['paged'] = $this->query_args['paged'];
			}

/**
			 * Current query variables.
			 *
			 * Filters the query variables for the current query. This hook allows
			 * developers to alter those variables.
			 *
			 * @since 1.0.0
			 *
			 * @param array $current_query_vars Current query variables.
			 */
			$current_query_vars = apply_filters( 'elementor/query/get_query_args/current_query', $current_query_vars );
			$this->query_args = $current_query_vars;
			return $current_query_vars;
		}

$this->set_common_args();
		$this->set_order_args();
		$this->set_pagination_args();
		$this->set_post_include_args();

if ( ! $this->is_manual_selection() ) {

$this->set_post_exclude_args();
			$this->set_avoid_duplicates();
			$this->set_terms_args();
			$this->set_author_args();
			$this->set_date_args();
		}

/**
		 * Current query arguments.
		 *
		 * Filters the query arguments for the current query. This hook allows
		 * developers to alter those arguments.
		 *
		 * @param array       $query_args An array of WordPress query arguments.
		 * @param Widget_Base $widget     An instance of Elementor widget.
		 */
		$this->query_args = apply_filters( 'elementor/query/query_args', $this->query_args, $this->widget );

return $this->query_args;
	}

protected function set_pagination_args() {
		$this->set_query_arg( 'posts_per_page', $this->get_widget_settings( 'posts_per_page' ) );
		$sticky_post = $this->get_widget_settings( 'ignore_sticky_posts' ) ? true : false;
		$this->set_query_arg( 'ignore_sticky_posts', $sticky_post );
	}

protected function set_common_args() {
		$this->query_args['post_status'] = 'publish'; // Hide drafts/private posts for admins

if ( $this->is_manual_selection() ) {
			$post_types = Utils::get_public_post_types();
			$this->query_args['post_type'] = array_keys( $post_types );
		} else {
			$this->query_args['post_type'] = $this->get_widget_settings( 'post_type' );
		}
	}

protected function set_post_include_args() {

if ( $this->is_manual_selection() ) {

$this->set_query_arg( 'post__in', $this->get_widget_settings( 'posts_ids' ) );

if ( empty( $this->query_args['post__in'] ) ) {
				// If no selection - return an empty query
				$this->query_args['post__in'] = [ 0 ];
			}

$this->set_query_arg( 'ignore_sticky_posts', true, true );
		}
	}

private function is_manual_selection(): bool {
		return 'by_id' === $this->get_widget_settings( 'post_type' );
	}

protected function set_post_exclude_args() {

$exclude = $this->get_widget_settings( 'exclude' );

if ( empty( $exclude ) ) {
			return;
		}

$post__not_in = [];

if ( $this->maybe_in_array( 'current_post', $exclude ) ) {
			if ( is_singular() ) {
				$post__not_in[] = get_queried_object_id();
			}
		}

$exclude_ids = $this->get_widget_settings( 'exclude_ids' );
		if ( $this->maybe_in_array( 'manual_selection', $exclude ) && ! empty( $exclude_ids ) ) {
			$post__not_in = array_merge( $post__not_in, $exclude_ids );
		}

$this->set_query_arg( 'post__not_in', $post__not_in );
	}

protected function set_avoid_duplicates() {
		if ( 'yes' === $this->get_widget_settings( 'avoid_duplicates' ) ) {
			$post__not_in = isset( $this->query_args['post__not_in'] ) ? $this->query_args['post__not_in'] : [];
			$post__not_in = array_merge( $post__not_in, Module::$displayed_ids );
			$this->set_query_arg( 'post__not_in', $post__not_in, true );
		}
	}

protected function set_terms_args() {
		if ( $this->is_manual_selection() ) {
			return;
		}

$this->build_terms_query_include( 'include_term_ids' );
		$this->build_terms_query_exclude( 'exclude_term_ids' );
	}

protected function build_terms_query_include( $control_id ) {
		$this->build_terms_query( 'include', $control_id );
	}

protected function build_terms_query_exclude( $control_id ) {
		$this->build_terms_query( 'exclude', $control_id, true );
	}

protected function build_terms_query( $tab_id, $control_id, $exclude = false ) {
		$tab_id = $this->get_widget_settings( $tab_id );
		$settings_terms = $this->get_widget_settings( $control_id );
		if ( empty( $tab_id ) || empty( $settings_terms ) || ! $this->maybe_in_array( 'terms', $tab_id ) ) {
			return;
		}

$terms = [];

// Switch to term_id in order to get all term children (sub-categories):
		foreach ( $settings_terms as $id ) {
			$term_data = get_term_by( 'term_taxonomy_id', $id );
			if ( false !== $term_data ) {
				$taxonomy = $term_data->taxonomy;
				$terms[ $taxonomy ][] = $id;
			}
		}
		$this->insert_tax_query( $terms, $exclude );
	}

protected function insert_tax_query( $terms, $exclude ) {
		$tax_query = [];
		foreach ( $terms as $taxonomy => $ids ) {
			$query = [
				'taxonomy' => $taxonomy,
				'field' => 'term_taxonomy_id',
				'terms' => $ids,
			];

if ( $exclude ) {
				$query['operator'] = 'NOT IN';
			}

$tax_query[] = $query;
		}

if ( empty( $tax_query ) ) {
			return;
		}

if ( empty( $this->query_args['tax_query'] ) ) {
			$this->query_args['tax_query'] = $tax_query;
		} else {
			$this->query_args['tax_query']['relation'] = 'AND';
			$this->query_args['tax_query'][] = $tax_query;
		}
	}

protected function set_author_args() {

$include_authors = $this->get_widget_settings( 'include_authors' );
		if ( ! empty( $include_authors ) && $this->maybe_in_array( 'authors', $this->get_widget_settings( 'include' ) ) ) {
			$this->set_query_arg( 'author__in', $include_authors );
		}

$exclude_authors = $this->get_widget_settings( 'exclude_authors' );
		if ( ! empty( $exclude_authors ) && $this->maybe_in_array( 'authors', $this->get_widget_settings( 'exclude' ) ) ) {
			//exclude only if not explicitly included
			if ( empty( $this->query_args['author__in'] ) ) {
				$this->set_query_arg( 'author__not_in', $exclude_authors );
			}
		}
	}

protected function set_order_args() {
		$order = $this->get_widget_settings( 'order' );
		if ( ! empty( $order ) ) {
			$this->set_query_arg( 'orderby', $this->get_widget_settings( 'orderby' ) );
			$this->set_query_arg( 'order', $this->get_widget_settings( 'order' ) );
		}
	}

protected function set_date_args() {

$select_date = $this->get_widget_settings( 'select_date' );
		if ( ! empty( $select_date ) ) {
			$date_query = [];
			switch ( $select_date ) {
				case 'today':
					$date_query['after'] = '-1 day';
					break;
				case 'week':
					$date_query['after'] = '-1 week';
					break;
				case 'month':
					$date_query['after'] = '-1 month';
					break;
				case 'quarter':
					$date_query['after'] = '-3 month';
					break;
				case 'year':
					$date_query['after'] = '-1 year';
					break;
				case 'exact':
					$after_date = $this->get_widget_settings( 'date_after' );
					if ( ! empty( $after_date ) ) {
						$date_query['after'] = $after_date;
					}
					$before_date = $this->get_widget_settings( 'date_before' );
					if ( ! empty( $before_date ) ) {
						$date_query['before'] = $before_date;
					}
					$date_query['inclusive'] = true;
					break;
			}

$this->set_query_arg( 'date_query', $date_query );
		}
	}

/**
	 * @param string $control_name
	 *
	 * @return mixed|null
	 */
	protected function get_widget_settings( $control_name ) {
		$control_name = $this->prefix . $control_name;
		return isset( $this->widget_settings[ $control_name ] ) ? $this->widget_settings[ $control_name ] : null;
	}

/**
	 * @param       $key
	 * @param       $value
	 * @param false $override
	 */
	protected function set_query_arg( $key, $value, $override = false ) {
		if ( ! isset( $this->query_args[ $key ] ) || $override ) {
			$this->query_args[ $key ] = $value;
		}
	}

/**
	 * @param string    $value
	 * @param mixed     $maybe_array
	 *
	 * @return bool
	 */
	protected function maybe_in_array( $value, $maybe_array ) {
		return is_array( $maybe_array ) ? in_array( $value, $maybe_array, true ) : $value === $maybe_array;
	}

/**
	 * @param \WP_Query $wp_query
	 */
	public function pre_get_posts_query_filter( $wp_query ) {
		if ( $this->widget ) {
			$query_id = $this->get_widget_settings( 'query_id' );
			$widget_name = $this->widget->get_name();
			/**
			 * Elementor Pro query arguments.
			 *
			 * Fires before the actual query is run. This hook allows developers to
			 * alter individual queries by id.
			 *
			 * The dynamic portions of the hook name, `$widget_name` & `$query_id`,
			 * refers to the widget name and query id respectively.
			 *
			 * @since 2.1.0
			 *
			 * @param \WP_Query   $wp_query An instance of WordPress query.
			 * @param Widget_Base $widget   An instance of Elementor widget
			 */
			do_action( "elementor/query/{$query_id}", $wp_query, $this->widget );
		}
	}

/**
	 * @param \WP_Query $query
	 */
	public function fix_query_offset( &$query ) {
		$offset = $this->get_widget_settings( 'offset' );

if ( $offset && $query->is_paged ) {
			$query->query_vars['offset'] = $offset + ( ( $query->query_vars['paged'] - 1 ) * $query->query_vars['posts_per_page'] );
		} else {
			$query->query_vars['offset'] = $offset;
		}
	}

/**
	 * @param int       $found_posts
	 * @param \WP_Query $query
	 *
	 * @return int
	 */
	public function fix_query_found_posts( $found_posts, $query ) {
		$offset = $this->get_widget_settings( 'offset' );

if ( $offset ) {
			$found_posts -= $offset;
		}

return $found_posts;
	}
}

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