File admin/class-papi-admin-columns.php

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<?php

/**
 * Admin class that handle table columns.
 */
final class Papi_Admin_Columns {

    /**
     * Current post type.
     *
     * @var string
     */
    private $post_type;

    /**
     * Current taxonomy.
     *
     * @var string
     */
    private $taxonomy;

    /**
     * The constructor.
     */
    public function __construct() {
        $this->setup_globals();
        $this->setup_actions();
        $this->setup_filters();
    }

    /**
     * Get meta type value.
     *
     * @return string
     */
    private function get_meta_type_value() {
        return empty( $this->taxonomy ) ? $this->post_type : $this->taxonomy;
    }

    /**
     * Add custom table header to page or taxonomy type.
     *
     * @param  array $defaults
     *
     * @return array
     */
    public function manage_page_type_posts_columns( array $defaults = [] ) {
        if ( ! in_array( $this->post_type, papi_get_post_types() ) && ! in_array( $this->taxonomy, papi_get_taxonomies() ) ) {
            return $defaults;
        }

        /**
         * Hide column for post or taxonomy type. Default is false.
         *
         * @param string $post_type
         */
        if ( apply_filters( 'papi/settings/column_hide_' . $this->get_meta_type_value(), false ) ) {
            return $defaults;
        }

        /**
         * Change column title for entry type column.
         *
         * @param  string $post_type
         */
        $defaults['entry_type'] = apply_filters(
            'papi/settings/column_title_' . $this->get_meta_type_value(),
            __( 'Type', 'papi' )
        );

        return $defaults;
    }

    /**
     * Add custom table column to page or taxonomy type.
     *
     * @param string $column_name
     * @param int    $post_id
     * @param int    $term_id
     */
    public function manage_page_type_posts_custom_column( $column_name, $post_id, $term_id = null ) {
        if ( ! in_array( $this->post_type, papi_get_post_types() ) && ! in_array( $this->taxonomy, papi_get_taxonomies() ) ) {
            return;
        }

        /**
         * Hide column for post type. Default is false.
         *
         * @param string $post_type
         */
        if ( apply_filters( 'papi/settings/column_hide_' . $this->get_meta_type_value(), false ) ) {
            return;
        }

        // Column name most be `entry_type`. On taxomy the column name is `post_id` variable.
        if ( $column_name !== 'entry_type' && $post_id !== 'entry_type' ) {
            return;
        }

        // Get the entry type for the post or term.
        $entry_type = papi_get_entry_type_by_meta_id(
            is_numeric( $post_id ) ? $post_id : $term_id,
            papi_get_meta_type()
        );

        if ( ! is_null( $entry_type ) ) {
            echo esc_html( $entry_type->name );
        } else {
            $post = ! empty( $this->post_type ) && empty( $this->taxonomy );
            $arg  = $post ? papi_get_post_type() : papi_get_taxonomy();
            $type = $post ? 'page' : 'taxonomy';

            echo esc_html( call_user_func_array( "papi_filter_settings_standard_{$type}_type_name", [$arg] ) );
        }
    }

    /**
     * Filter posts on load if `page_type` query string is set.
     *
     * @param  WP_Query $query
     *
     * @return WP_Query
     */
    public function pre_get_posts( WP_Query $query ) {
        global $pagenow;

        if ( $pagenow === 'edit.php' && ! is_null( papi_get_qs( 'page_type' ) ) ) {
            if ( papi_get_qs( 'page_type' ) === 'papi-standard-page' ) {
                $query->set( 'meta_query', [
                    [
                        'key'     => papi_get_page_type_key(),
                        'compare' => 'NOT EXISTS'
                    ]
                ] );
            } else {
                $query->set( 'meta_key', papi_get_page_type_key() );
                $query->set( 'meta_value', papi_get_qs( 'page_type' ) );
            }
        }

        return $query;
    }

    /**
     * Filter page types in post type list.
     */
    public function restrict_page_types() {
        $post_types = papi_get_post_types();

        if ( in_array( $this->post_type, $post_types ) ) {
            $page_types = papi_get_all_page_types( $this->post_type );
            $page_types = array_map( function ( $page_type ) {
                return [
                    'name'  => $page_type->name,
                    'value' => $page_type->get_id()
                ];
            }, $page_types );

            // Add the standard page that isn't a real page type.
            if ( papi_filter_settings_show_standard_page_type_in_filter( $this->post_type ) ) {
                $page_types[] = [
                    'name'  => papi_filter_settings_standard_page_type_name( $this->post_type ),
                    'value' => 'papi-standard-page'
                ];
            }

            usort( $page_types, function ( $a, $b ) {
                return strcmp(
                    strtolower( $a['name'] ),
                    strtolower( $b['name'] )
                );
            } );
            ?>
            <select name="page_type" class="postform">
                <option value="0" selected><?php _e( 'All types', 'papi' ); ?></option>
                <?php
                foreach ( $page_types as $page_type ) {
                    printf(
                        '<option value="%s" %s>%s</option>',
                        $page_type['value'],
                        papi_get_qs( 'page_type' ) === $page_type['value'] ? ' selected' : '',
                        $page_type['name']
                    );
                }
                ?>
            </select>
            <?php
        }
    }

    /**
     * Setup actions.
     */
    private function setup_actions() {
        // Setup post type actions.
        if ( ! empty( $this->post_type ) && empty( $this->taxonomy ) ) {
            add_filter( 'pre_get_posts', [$this, 'pre_get_posts'] );
            add_action( 'restrict_manage_posts', [ $this, 'restrict_page_types'] );
            add_action( sprintf( 'manage_%s_posts_custom_column', $this->post_type ), [
                $this,
                'manage_page_type_posts_custom_column'
            ], 10, 2 );
        }

        // Setup taxonomy actions.
        if ( ! empty( $this->taxonomy ) ) {
            add_action( sprintf( 'manage_%s_custom_column', $this->taxonomy ), [$this, 'manage_page_type_posts_custom_column'], 10, 3 );
        }
    }

    /**
     * Setup filters.
     */
    private function setup_filters() {
        // Setup post type actions.
        if ( ! empty( $this->post_type ) && empty( $this->taxonomy ) ) {
            add_filter( sprintf( 'manage_%s_posts_columns', $this->post_type ), [$this, 'manage_page_type_posts_columns'] );
        }

        // Setup taxonomy actions.
        if ( ! empty( $this->taxonomy ) ) {
            add_filter( sprintf( 'manage_edit-%s_columns', $this->taxonomy ), [$this, 'manage_page_type_posts_columns'] );
        }
    }

    /**
     * Setup globals.
     */
    private function setup_globals() {
        $this->post_type = papi_get_post_type();
        $this->taxonomy  = papi_get_taxonomy();
    }
}

if ( is_admin() ) {
    new Papi_Admin_Columns;
}

Classes

Functions